A fastening structure includes an insulation member disposed between a fastening member and a fastened member, and has a configuration wherein the insulation member is in close contact with the fastening member and the fastened member so that an adequate sealing area is secured. The fastening structure includes: a case; a fastening member extending through a through hole in the case; and an insulation member between the fastening member and the case. The fastening member includes a portion exposed from the case, and a penetrating portion extending through the through hole. The expose portion includes a confronting surface opposed to an outside surface of the case via the insulation member. A compression region is located, and defines a minimum distance between, the confronting surface and the outside surface. A projection is disposed at place not overlapping with the compression region.
A battery in which a current interrupt device (diaphragm) can be actuated by appropriate actuation pressure is provided. The battery includes a charge/discharge body, a current collection member (positive electrode current collection plate) electrically coupled to the charge/discharge body, a current interrupt device (diaphragm) stacked and joined with the positive electrode current collection plate, an external terminal (positive electrode terminal) electrically coupled to the diaphragm, a supporting table supporting the diaphragm in a stacking direction (Z-axis direction) of the positive electrode current collection plate and the diaphragm, and a low-stiffness member (projection) arranged alongside the supporting table in the Z-axis direction and having stiffness lower than stiffness of the supporting table.
A battery control device that controls a battery pack in which a plurality of batteries are connected to each other detects a voltage variation between the plurality of batteries, calculates a restriction coefficient based on a charging rate of the battery pack and the voltage variation, and restricts inputtable/outputtable power based on the restriction coefficient, the inputtable/outputtable power being maximum power inputtable to and outputtable from the battery pack.
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
A battery including a safety valve (cleavage valve) having relatively high durability and capable of efficiently discharging gas inside the battery when cleaving is provided. The battery includes a charge/discharge body, an exterior body in which the charge/discharge body is housed, and the safety valve (the cleavage valve) provided at the exterior body and configured to open from inside the exterior body to outside when pressure of inside of the exterior body becomes equal to or larger than a predetermined value. An annular edge section of the cleavage valve, which is continuous to the exterior body includes a first edge section formed in an arc shape and a second edge section formed with a radius larger than a radius of the first edge section or formed in a linear shape.
To obtain a small-sized busbar in which a portion overlapping a terminal part of a battery is flat while stress applied to a joining surface is mitigated. A battery pack 1 according to the present invention has: a battery group in which a plurality of unit batteries 2 having positive-electrode terminals 2a and negative-electrode terminals 2b are stacked, with the positive-electrode terminal 2a of one unit battery 2A among mutually adjacent unit batteries 2 and the negative-electrode terminal 2b of the other unit battery 2B being adjacent in the stacking direction; and a busbar 10 for joining the positive-electrode terminal 2a of the one unit battery 2A and the negative-electrode terminal 2b of the other unit battery 2B. The busbar 10 has a positive-electrode plate 100 joined to the positive-electrode terminal 2a of the one unit battery 2A, and the negative-electrode plate 200 joined to the negative-electrode terminal 2b of the other unit battery 2B. At least one of the positive-electrode plate 100 and the negative-electrode plate 200 has a step-form shape bent in a stepwise manner, the joining being carried out via the step-form portion.
H01M 50/505 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing comprising a single busbar
H01M 50/516 - Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
This battery pack includes: a holding member for holding a plurality of batteries; a layered battery in which a plurality of batteries are stacked in a layering direction via the holding member; and a ventilation passage that extends in the layering direction direction adjacent to the layered battery and forms a flow passage for cooling air for cooling the plurality of batteries. The ventilation passage has an intake port for taking cooling air into the ventilation passage. The holding member has ventilation holes that open to the ventilation path side and the opposite side from the ventilation path and serve to circulate cooling air from the ventilation path to the layered battery. The ventilation holes include bottom surface ventilation holes that open toward a space formed between the bottom surfaces of the plurality of batteries and the bottom surface of the holding member.
H01M 10/617 - Types of temperature control for achieving uniformity or desired distribution of temperature
H01M 10/647 - Prismatic or flat cells, e.g. pouch cells
H01M 10/651 - Means for temperature control structurally associated with the cells characterised by parameters specified by a numeric value or mathematical formula, e.g. ratios, sizes or concentrations
H01M 10/6563 - Gases with forced flow, e.g. by blowers
7.
SECONDARY BATTERY AND METHOD FOR MANUFACTURING SAME
In this secondary battery, a positive electrode 11 having a positive electrode active material and a negative electrode 12 having a negative electrode active material are laminated across a separator 13. The secondary battery is characterized in that the positive electrode active material is a mixture of a first active material 1 having an average particle diameter (D50, median diameter) of 10-20 μm, a second active material 2 having an average particle diameter (D50, median diameter) of 3-5 μm, and a third active material 3 having an average particle diameter (D50, median diameter) larger than that of the second active material and a tap density lower than that of the second active material. As a result, it is possible to provide a secondary battery having excellent output characteristics as well as higher energy density of the battery due to the higher density of the positive electrode.
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
Provided is a battery control device that calculates at least temperature information T to calculate allowable power of a battery. The device includes a surface temperature detection unit that measures the battery's surface temperature Ts; an internal temperature calculation unit that estimates the battery's estimated internal temperature Ti in place of the actual measurement; and a temperature selection unit that selects and outputs either the surface temperature Ts or the estimated internal temperature Ti as the temperature information T. Based on information accumulated for multiple clock times, including the information at a certain clock time and of the battery's actual charge/discharge voltage Vm and current I, and the battery's estimated charge/discharge voltage Ve, the temperature selection unit determines a magnitude relationship between a true internal temperature Tt, the surface temperature Ts, and the estimated internal temperature Ti. The selected temperature information T is then used to control the battery.
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
G01R 31/374 - Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with means for correcting the measurement for temperature or ageing
G01R 31/3842 - Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current measurements
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
A battery system monitoring device removes a first noise contained in a voltage of a group of single cells which are connected in series based on a first time constant, and removes a second noise contained in a series voltage between the positive electrode of the highest single cell and the negative electrode of the lowest single cell based on a second time constant. A total voltage is calculated by totaling the voltage of the single cells where the first noise has been removed. The series voltage where the second noise has been removed is measured. Based on the calculated total voltage and the measured series voltage, a determination regarding whether or not to permit a diagnosis of a state of the group of single cells is made. The diagnosis is executed in response to a determination that the diagnosis may be performed.
A battery pack in which a battery assembly is housed in a battery housing, in which a bottom portion of the battery housing includes first fixing portions, a partitioning portion, and an insulating portion. The battery assembly includes a laminated body which is formed by alternately laminating secondary batteries and spacers, end spacers, and second fixing portions. The first fixing portions and the second fixing portions are provided to face each other so as to be coaxial. A bottom portion of the spacer extends in the lamination direction of the battery assembly so as to cover a lower surface of one of adjacent secondary batteries. The spacer and the end spacer have one or more specified configurations.
H01M 50/242 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
B60L 50/60 - Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/262 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks
H01M 50/289 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs
H01M 50/691 - Arrangements or processes for draining liquids from casingsCleaning battery or cell casings
A lithium-ion secondary battery having excellent adhesion between an electrode mixture layer and an electronic insulating layer provided thereon is provided. The lithium ion secondary battery includes: a positive electrode including a positive electrode current collector, a positive electrode mixture layer provided on the positive electrode current collector, and a positive electrode electronic insulating layer provided on the positive electrode mixture layer; and a negative electrode including a negative electrode current collector, a negative electrode mixture layer provided on the negative electrode current collector, and a negative electrode including a negative electrode electronic insulating layer provided on the negative electrode mixture layer. The height of recesses and projections at the interface between the positive electrode mixture layer and the positive electrode electronic insulating layer is 2 μm or more. The height of recesses and projections at the interface between the negative electrode mixture layer and the negative electrode electronic insulating layer is 2 μm or more.
H01M 10/0587 - Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
The present invention realizes a configuration for quickly measuring the temperature in each unit cell in a battery pack in which a plurality of unit cells are arranged. Provided is a battery pack in which there are arranged a plurality of unit cells in which a power generation element is accommodated within a container and sealed with a metal lid 501, the battery pack being characterized in that a heat transfer member 20 is fixed to the lid 501, an insulation layer 21 having first wiring is fixed to the heat transfer member 20, and a temperature detection sensor (thermistor) 30 is connected to the first wiring.
H01M 50/204 - Racks, modules or packs for multiple batteries or multiple cells
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H01M 50/284 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with incorporated circuit boards, e.g. printed circuit boards [PCB]
H01M 50/505 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing comprising a single busbar
This safety valve (530) includes: a central portion (531) formed in a rectangular shape in a recess (520f) of an exterior body (lid 520); one end portion (532) that is continuous with the central portion (531) in the recess portion (520f) and formed in a semicircular shape on the side of one end (531p) of the central portion (531) along a first direction (longitudinal direction X); and another end portion (533) that is continuous with the central portion (531) in the recess portion (520f) and formed in a semicircular shape on the side of another end (531q) of the central portion (531) along the first direction. A first groove (531a) and a second groove (531b) of the safety valve (530) are formed in a linear shape, a third groove (532c) and a fourth groove (533d) are formed in an arc shape, and the thickness of the first groove (531a) is greater than the thickness of the second groove (531b), the third groove (532c), and the fourth groove (533d).
A battery includes a charge/discharge body having an electrode (a positive electrode and a negative electrode) with an electrode tab (a positive electrode tab and a negative electrode tab) and a current collector (a positive electrode current collection plate and a negative electrode current collection plate) joined to the electrode tab (the positive electrode tab and the negative electrode tab). The current collector (the positive electrode current collection plate and the negative electrode current collection plate) includes a convex joining section (a positive electrode joining section and a negative electrode joining section). The electrode tab (the positive electrode tab and the negative electrode tab) and the joining section (the positive electrode joining section and the negative electrode joining section) are welded.
H01M 50/528 - Fixed electrical connections, i.e. not intended for disconnection
H01M 4/78 - Shapes other than plane or cylindrical, e.g. helical
H01M 10/0587 - Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
H01M 50/533 - Electrode connections inside a battery casing characterised by the shape of the leads or tabs
H01M 50/538 - Connection of several leads or tabs of wound or folded electrode stacks
15.
MANUFACTURING METHOD FOR BATTERY PACK, MANUFACTURING DEVICE FOR BATTERY PACK, AND BATTERY PACK
In an adjustment step (S08) of a manufacturing method for a battery pack (1), after a connection member (421) is attached to an attachment section (721b) of a holding member (case 721), the connection member (421) is adjusted via an opening section (721c). The case (721) of the battery pack (1) includes: a base section (721a) that is attached to a second side plate (232); the attachment section (721b), which penetrates the base section (721a) and to which the connection member (421) is detachably attached; and the opening section (721c), which is adjacent to the attachment section (721b) and leads to the connection member (421) penetrating the base section (721a). In a state in which the base section (721a) is attached to the second side plate (232), the opening section (721c) is exposed to the outside.
H01M 50/298 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by the wiring of battery packs
H01M 50/50 - Current conducting connections for cells or batteries
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/284 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with incorporated circuit boards, e.g. printed circuit boards [PCB]
16.
METHOD FOR MANUFACTURING BATTERY PACK, DEVICE FOR MANUFACTURING BATTERY PACK, AND BATTERY PACK
A connection step (S03) and a pressing step (S04) of a method for manufacturing a battery pack (1) involve moving a cover (bus bar holder 321) while holding a holding part (321d), and connecting a first connection part (202b) of a spacer (cell spacer 202) and a second connection part (321b) of the bus bar holder (321). The cell spacer (202) of the battery pack (1) includes a first connection part (202b) protruding from a body part (202a) to the outside. The bus bar holder (321) of the battery pack (1) includes: a covering part (321a) that covers a first battery (100) and a second battery (100); a second connection part (321b) formed in the covering part (321a) and connected to the first connection part (202b); a reinforcing part (321c) formed in the covering part (321a), adjacent to the second connection part (321b), and reinforcing the second connection part (321b); and a holding part (321d) formed in a planar shape on the covering part (321a).
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/271 - Lids or covers for the racks or secondary casings
H01M 50/289 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs
A battery is provided which includes a current collection member and an electrode collector which are sufficiently bonded to each other. A battery 1 includes a charge/discharge body 10 which includes, for example, a positive electrode 11 provided with a collector (for example, a positive electrode current collection foil 11S) and an active material, and a current collection member (for example, a positive electrode current collection plate 21) bonded to the positive electrode current collection foil 11S. The positive electrode current collection plate 21 includes a first stiff portion 21p having predetermined stiffness, and a second stiff portion 21q adjacent to the first stiff portion 21p and higher in stiffness than the first stiff portion 21p. The second stiff portion 21q included in the positive electrode current collection plate 21 and the positive electrode current collection foil 11S of the positive electrode 11 are bonded to each other.
Provided is a battery using an electrode terminal formed by friction welding while maintaining or improving sealability. A battery 1 includes: a charging/discharging body 100; an exterior body (lid 420) accommodating the charging/discharging body and having a through-hole (negative electrode-side insertion hole 420b) formed therein; a sealing body (negative electrode-side gasket 630) provided to the exterior body; and an electrode terminal (negative electrode terminal 320) provided to the sealing body. The electrode terminal includes: a first part (insertion part 322) inserted into the through-hole of the exterior body and indirectly or directly joined to the charging/discharging body; and a second part (main body part 321) that is exposed to the outside of the exterior body, has lower rigidity than the first part, and is joined to a bus bar or an electric device. The first part and the second part are joined by friction welding. The second part includes a protruding part (raised part 320e or cut-formed part 320f) protruding toward the sealing body while annularly surrounding an outer peripheral surface 322b of the first part in the joining part with the first part. The protruding part is in contact with the sealing body.
A battery pack (1) comprises: a battery (100); a temperature measuring member (temperature sensor 501) that measures the temperature of the battery (100); a support member (504) that supports the temperature sensor (501); and a holding member (311) that holds the support member (504). The support member (504) includes: a main body portion (504P) to which the temperature sensor (501) is attached; a pressing portion (504Q) that presses the temperature sensor (501) toward the battery (100) while being in contact with the holding member (311); and a regulating portion (first regulating portion 504R and second regulating portion 504S) that comes into contact with the holding member (311) at a position farther from the battery (100) than the main body portion (504P), thereby regulating the relative position between the holding member (311) and the support member (504). The regulating portion regulates the relative position between the holding member (311) and the support member (504) in two mutually different directions that intersect the direction in which the pressing portion (504Q) presses the temperature sensor (501).
H01M 50/204 - Racks, modules or packs for multiple batteries or multiple cells
G01K 1/14 - SupportsFastening devicesArrangements for mounting thermometers in particular locations
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
20.
ULTRASONIC HORN, SECONDARY BATTERY, AND METHOD FOR MANUFACTURING SECONDARY BATTERY
An ultrasonic horn reduces the likelihood of damaging a plurality of stacked sheets of metal foil when the stacked sheets and a metal member are ultrasonically bonded by applying ultrasonic vibration to the stacked sheets. An ultrasonic horn is used for ultrasonically bonding a plurality of stacked sheets of negative electrode foil and a negative electrode collector plate by applying ultrasonic vibration to the stacked sheets of negative electrode foil. The horn includes a horn body, a first protrusion having a first surface that is a curved surface and protruding from an opposing surface of the horn body facing the anvil toward the anvil, and a second protrusion provided at a center of the first surface of the first protrusion and protruding toward the anvil. The second protrusion includes an end surface that is a planar surface and a second surface connecting the end surface and the first surface.
B23K 20/10 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
B23K 37/04 - Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
H01M 10/0587 - Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
H01M 50/536 - Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
The present invention achieves a battery pack having a bus bar formed by favorably solid-phase bonding two or more members. A bus bar 320 has a first member 321, and a second member 322, the hardness of which is lower than that of the first member 321. The first member 321 includes a first contact part 321R that is in contact with the second member 322 in the lamination direction A, and a non-contact part 321S that is continuous with the first contact part and not in contact with the second member. The second member includes a second contact part 322R that is in contact with the first contact part of the first member in the lamination direction. The first contact part and the second contact part include a solid-phase joint 320A. The non-contact part of the first member is located closer to a second attachment part 322P of the second member than the solid-phase joint. The leading edge 322e of the non-contact part of the first member is inclined in a direction crossing the lamination direction and is separated from the second contact part of the second member.
H01G 11/76 - Terminals, e.g. extensions of current collectors specially adapted for integration in multiple or stacked hybrid or EDL capacitors
H01M 50/503 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
H01M 50/505 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing comprising a single busbar
H01M 50/526 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing characterised by the material having a layered structure
This battery pack (1) comprises: a battery (100); a busbar (inter-cell busbar 302); a harness (400A) including an electric wire (402) and a terminal (401) connected to the inter-cell busbar (302); and a holding member (busbar holder 311) holding the inter-cell busbar (302). The busbar holder (311) includes a base (311M) and a protruding part (311N). The harness (400A) is provided with a first connection part (400P) to which the inter-cell busbar (302) and the terminal (401) are connected and a second connection part (400Q) to which the terminal (401) and the electric wire (402) are connected. The protruding part (311N) includes a first wall part (311d) adjacent to the first connection part (400P) and a second wall part (311e) adjacent to the second connection part (400Q). The first wall part (311d) and the second wall part (311e) are adjacent to the harness (400A). The second wall part (311e) includes a portion extending in a direction away from the battery (100) relative to the second connection part (400Q).
H01M 50/50 - Current conducting connections for cells or batteries
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/298 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by the wiring of battery packs
H01M 50/503 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
H01M 50/507 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
23.
SOLID ELECTROLYTE BATTERY AND METHOD FOR PRODUCING SOLID ELECTROLYTE BATTERY
A solid electrolyte battery comprises a positive electrode layer, a negative electrode layer and a solid electrolyte layer formed between the positive electrode layer and the negative electrode layer, and which is characterized in that: the negative electrode layer comprises a first negative electrode layer, and a second negative electrode layer that is superposed on the first negative electrode layer so as to be in contact with the solid electrolyte layer; the active material of the first negative electrode layer is a crystalline carbon; the active material of the second negative electrode layer is an amorphous carbon; a negative electrode layer solid electrolyte is mixed into the first negative electrode layer and the second negative electrode layer; and (average particle size (D50) of negative electrode layer solid electrolyte 32)<(average particle size (D50) of crystalline carbon 2)<(average particle size (D50) of amorphous carbon 1) is satisfied.
A power supply control device is applied to a vehicle equipped with electrical equipment, a relay connected to the electrical equipment, a first power supply that makes the relay operable, and a second power supply that discharges electricity to the electrical equipment via the relay. The device includes: a DC/DC converter that supplies electric power from the second power supply to the relay, serving as a backup for the first power supply; a third power supply charged by the first power supply, outputting the charged electric power to the relay; and a control unit that controls the DC/DC converter and second power supply. The control unit turns off the DC/DC converter when the third power supply's voltage is equal to or larger than a first threshold value and turns on the DC/DC converter when the third power supply's voltage is equal to or smaller than a second, lower threshold value.
B60L 58/18 - Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
H02J 7/34 - Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
Provided is a battery having: a charge/discharge body containing an electrolyte; a storage body (lid 420) including a liquid injection hole (420c); and a sealing plug (440) inserted into the liquid injection hole (420c). The liquid injection hole (420c) of the lid (420) includes a first penetration section (420P) and a second penetration section (420Q). The first penetration section (420P) includes a first inner peripheral surface (423) and an opposing surface (425). The second penetration section (420Q) includes a second inner peripheral surface (427). The sealing plug (440) includes a first insertion section (440P) and a second insertion section (440Q). The first insertion section (440P) includes a first outer peripheral surface (443) and an opposed surface (445). The second insertion section (440Q) includes a second outer peripheral surface (447). The length (L1) of a space (S1) between the second inner peripheral surface (427) of the lid (420) and the second outer peripheral surface (447) of the sealing plug (440) is at least partially greater than the length (L2) of a space (S2) between the first inner peripheral surface (423) of the lid (420) and the first outer peripheral surface (443) of the sealing plug (440).
Provided are a battery spacer that does not increase the rigidity of a battery frame more than necessary and a battery pack using the battery spacer. A battery spacer 52 is interposed between adjacent angular cells C1 having a substantially rectangular shape composed of four sides. The battery spacer 52 is divided into at least an outside region part 52out present at a position corresponding to mutually opposed sides 21aS, 21aL of the angular battery cells C1, and an inside region part 52in present on the inside of the outside region part 52out. The outside region part 52out is constituted of a rigid member, and the inside region part 52in is constituted of a flexible member.
H01M 50/293 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs characterised by the material
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/262 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks
H01M 50/264 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
H01M 50/289 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs
H01M 50/291 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
Provided is a battery equipped with a gas discharge mechanism capable of increasing a gas discharge capacity without increasing the proportions of the gas discharge mechanism. The battery comprises a gas discharge mechanism for discharging gas inside a battery container when the gas pressure inside the battery container reaches a predetermined value. The gas discharge mechanism comprises: a first gas discharge passage 51 that is connected to the inside of the battery container; a second gas discharge passage 52 that is connected to the first gas discharge passage, and that is connected to the outside of the battery container; and a gas discharge valve that is provided in a part of a gas discharge passage comprising the first gas discharge passage and the second gas discharge passage, and that performs an opening operation so as to connect the inside and the outside of the battery container with the gas discharge passage when the gas pressure of the inside of the battery container reaches a predetermined value. Further, the cross-sectional shape of the second gas discharge passage 52 viewed in a gas outflow direction of when the gas discharge valve 54 is opened is formed in a shape that does not hinder the flow of a streamline of the gas flowing out from the first gas discharge passage 51.
A battery pack include: batteries; a bus bar (a negative-electrode-side connection terminal) that electrically connects the batteries and a terminal of an external device (the terminal attached to a power cable); and a holding member (a case) which holds the negative-electrode-side connection terminal and to which the terminal of the power cable is attached with the negative-electrode-side connection terminal interposed therebetween. The negative-electrode-side connection terminal extends in an elongated shape toward a side of the case (holding member) having an insulating property. The negative-electrode-side connection terminal includes a protrusion projecting toward the side of the case. The protrusion extends in the lateral direction of the negative-electrode-side connection terminal on a distal end side in the longitudinal direction of the negative-electrode-side connection terminal. The case includes an attachment portion (an insertion portion) to which the protrusion is attached with a gap at least partially provided.
H01M 50/507 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
H01M 50/503 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
H01M 50/517 - Methods for interconnecting adjacent batteries or cells by fixing means, e.g. screws, rivets or bolts
29.
LITHIUM ION SECONDARY BATTERY AND LITHIUM ION BATTERY PACK
The present invention provides: a novel lithium ion secondary battery in which an electrolyte solution can be replenished or replaced; and a lithium ion battery pack. The lithium ion secondary battery is provided with two circulation mechanisms (30U, 30B) for electrolyte solutions, the circulation mechanisms (30U, 30B) being openable and closable and circulating an electrolyte solution from the inside of a battery container (1, 6) toward the outside of the battery container or from the outside of the battery container toward the inside of the battery container so as to replenish or replace the electrolyte solution. The circulation mechanisms each comprise: a fixing part (32) which is welded and fixed to the outer surface or the inner surface of the battery container; a shaft part (35) which is integrally formed with the fixing part, has a flow path (36) that passes through the inside of the fixing part and is fluidically connected to an internal space of the battery container, and which protrudes to the outside from the outer surface of the battery container; and a sealing body (39) which is detachably attached to the tip side of the shaft part in such a manner that an opening (35S) of the flow path can be opened and closed.
H01M 50/691 - Arrangements or processes for draining liquids from casingsCleaning battery or cell casings
H01M 50/15 - Lids or covers characterised by their shape for prismatic or rectangular cells
H01M 50/55 - Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
H01M 50/103 - Primary casingsJackets or wrappings characterised by their shape or physical structure prismatic or rectangular
H01M 50/262 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks
H01M 50/264 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
H01M 50/636 - Closing or sealing filling ports, e.g. using lids
A battery pack includes a battery, a control member (a control board) that controls the battery, a communication line (an electric wire) conducted to the control board, a covering member that covers the electric wire, and a fastening member that fastens the electric wire with the covering member interposed therebetween. The covering member includes a portion to be fastened surrounded and fastened by the fastening member, and a covering portion (a first covering portion) exposed from the fastening member. The first covering portion has a portion located on a side closer to the control board than the fastening member and having an outer diameter (D1>D2) larger than that of the portion to be fastened before being fastened by the fastening member.
H01M 50/298 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by the wiring of battery packs
H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/262 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks
H01M 50/271 - Lids or covers for the racks or secondary casings
A battery pack includes: a plurality of stacked batteries; a holding member (a first end block and a second end block) which extends in an intersecting direction (a width direction Y) intersecting a stacking direction X of the plurality of batteries at an end portion along the stacking direction X and holds the plurality of batteries; a control unit (a controller unit) which controls the plurality of batteries; an input/output unit (a junction unit) which is provided along the stacking direction X and to and from which power of the plurality of batteries is input and output via the controller unit; and a fastening member (a fastening bolt) which directly fastens the first end block and the second end block and a housing (a case) of the junction unit.
H01M 50/262 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks
H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/249 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for aircraft or vehicles, e.g. cars or trains
An object is to determine available input/output power of a battery with high accuracy. A battery control device includes: a correction factor calculation unit that determines a correction factor based on a deviation between a state of a secondary battery determined from a measured value related to the secondary battery and a state of the secondary battery calculated using a model related to the secondary battery; and a power limit value calculation unit that employs correction based on the correction factor to calculate a value related to available input/output power of the secondary battery. A ratio between voltage change in internal resistance based on an actual measured voltage obtained by measuring voltage of the secondary battery, and a voltage change in internal resistance based on a model voltage determined using a voltage equivalent circuit model of the secondary battery can be determined as the correction factor.
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
A battery pack 1 includes: a plurality of stacked batteries 100; a spacer (a cell spacer 202, a first intermediate spacer 203, and a second intermediate spacer 204) which is provided between the batteries 100 adjacent to each other along the stacking direction X of the battery 100 and holds the adjacent batteries 100; and a holding member (a first side plate 231 and a second side plate 232) which holds the plurality of batteries 100 along the stacking direction X. For example, the cell spacer 202 includes a convex portion 202a projecting from the battery 100 toward, for example, the second side plate 232. For example, the second side plate 232 includes an accommodating portion 232d having a recessed depression to accommodate the convex portion 202a.
H01M 50/291 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
H01M 50/244 - Secondary casingsRacksSuspension devicesCarrying devicesHolders characterised by their mounting method
H01M 50/264 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
A secondary battery in which a storage element that charges and discharges electricity is housed in an exterior body includes a box body configuring the exterior body and opened on one surface side and a lid that closes the one surface side of the box body, an external terminal attached to the lid to expose at least a part thereof to the outside from the lid, and a current collector that electrically connects the storage element and the external terminal. The current collector includes a first extending section electrically connected to the storage element and a plate-like second base disposed along the lid and electrically connected to the external terminal. The base includes a first base constituent section that is a part that forms one end side in a longitudinal direction of the base and continues from the first extending section and a second base constituent section that forms the other end side in the longitudinal direction of the base and is connected to the external terminal. The second base constituent section is formed thinner than the first base constituent section.
By using a control unit that controls a battery, a storage unit that stores data of allowable electric power, and a measurement unit that measures a voltage value between a pair of electrode terminals of the battery, the allowable electric power is defined as chargeable maximum electric power which is calculated based on a predetermined upper limit voltage value and a current charged state; wherein the data includes: a first voltage value that is an upper limit value for which a limitation of the allowable electric power is not required; a second voltage value which is higher than the first voltage value and for which a partial limitation of the allowable electric power is required; and a third voltage value which is higher than the second voltage value and for which a complete limitation of the allowable electric power is required; and wherein the control unit: acquires the voltage value from the measurement unit at every specified time; performs the complete limitation of the allowable electric power when the voltage value of the allowable electric power becomes equal to or higher than the third voltage value; and performs the partial limitation or the complete limitation of the allowable electric power while the voltage value of the allowable electric power decreases to the second voltage value and then to the first voltage value. Accordingly, a battery control method which eliminates hunting and enhances reliability is provided.
H02J 7/14 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
An electrode (positive electrode 100) has a current collecting layer (positive electrode current collecting layer 110), an active material layer (positive electrode active material layer 120), and an insulating layer (130). The active material layer (positive electrode active material layer 120) is laminated on and bonded to the current collecting layer (positive electrode current collecting layer 110), and includes an active material (positive electrode active material 121). The insulating layer (130) is laminated on and bonded to the active material layer (positive electrode active material layer 120) and includes an insulating material (131) having insulating properties. The insulating material (131) has an average particle diameter (D50) of 0.5 μm to 5.0 μm. The insulating layer (130) has a porosity of 25% to 70%. The insulating layer (130) and the active material layer (positive electrode active material layer 120) overlap each other at 0.001% to 30% along a lamination direction Z.
This electrode (positive electrode 100) has a current collector layer (positive electrode current collector layer 110), an active material layer (positive electrode active material layer 120), and an intermediate layer (130). The active material layer (positive electrode active material layer 120) is superposed on and bonded to the current collector layer (positive electrode current collector layer 110), and contains an active material (positive electrode active material 121). The intermediate layer (130) is provided at an intermediate point between, along the lamination direction (Z) of, the end (110b) side of the current collector layer (positive electrode current collector layer 110) and an end (120b) of the active material layer (positive electrode active material layer 120), and is bonded to the current collector layer (positive electrode current collector layer 110) and the active material layer (positive electrode active material layer 120).
This electrode (positive electrode (100)) includes: a current collecting layer (positive electrode current collecting layer (110)); an active material layer (positive electrode active material layer (120)) that is laminated and bonded to the current collecting layer and that contains an active material (positive electrode active material (121)); and an end portion insulating layer (130) that is laminated and bonded from an end portion (110b) side of the current collecting layer to a side portion (120a) of the active material layer (positive electrode active material layer (120)) and that contains particles (131) and a binder (132). The proportion of the end portion insulating layer (130) occupied by the particles (131) is 55% or more and 99.5% or less. The proportion of the end portion insulating layer (130) occupied by the particles (131) and the binder (132) is 55.5% or more and 99% or less. The thickness of the end portion insulating layer (130) in a lamination direction Z is 1/20 or more and 1/2 or less of the thickness of the active material layer (positive electrode active material layer (120)) in the lamination direction Z.
CURRENT COLLECTION FOIL OF ELECTRODE, ELECTRODE, BATTERY, MANUFACTURING METHOD FOR CURRENT COLLECTING FOIL OF ELECTRODE, AND MANUFACTURING METHOD FOR BATTERY
A current collection foil (for example, a positive electrode current collection layer) of an electrode includes a current collection section joined with an active material and wound and a plurality of terminal sections provided at a side edge extending in a winding direction of the current collection section. The terminal sections adjacent to one another in the winding direction include the terminal sections formed with relatively longer intervals on a side close to another end portion at a winding end than a side close to one end portion at a winding start of the current collection section. The plurality of terminal sections overlap in a state in which the current collection section is wound. At least one of the terminal sections and the current collection section 11a includes a mark for distinguishing any one terminal section of the current collection section and the other terminal sections.
A battery control device (100) is provided with a calculating device (battery controller 101) that calculates an internal resistance value (DCR) of a battery (300). The battery controller (101) calculates a current difference value (ΔI) on the basis of a first current value (I1) measured at a first time point (t1) that serves as a target measurement time point, and a second current value (I2) measured at a second time point (t2) that serves as a target measurement time point, the second time point being a time point at which a predetermined time has elapsed from the first time point (t1). The battery controller (101) calculates a voltage difference value (ΔV) on the basis of a first voltage value (V1) measured at a predetermined time point, after the first time point (t1), that serves as a target measurement time, and a second voltage value (V2) measured at a third time point (t3) that serves as a target measurement time point, the third time point (t3) being after the predetermined time point and being a time point at which a predetermined period of time has elapsed after the second time point (t2). The battery controller (101) calculates the internal resistance value (DCR) of the battery (300) on the basis of the current difference value (ΔI) and the voltage difference value (ΔV).
G01R 31/389 - Measuring internal impedance, internal conductance or related variables
G01R 27/08 - Measuring resistance by measuring both voltage and current
G01R 31/382 - Arrangements for monitoring battery or accumulator variables, e.g. SoC
G01R 31/385 - Arrangements for measuring battery or accumulator variables
G01R 31/392 - Determining battery ageing or deterioration, e.g. state of health
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
A battery includes a charge/discharge body including an electrode including an electrode tab, a cover that faces a side section of the charge/discharge body, from which the electrode tab projects, and covers and insulates the charge/discharge body, and a container that houses the charge/discharge body covered by the cover and has conductivity. The cover includes a main body section that covers the side section of the charge/discharge body, an insertion section formed in a cutout shape including an opening at an outer edge of the main body section, the electrode tab being inserted into the insertion section, and a wall section that extends in a direction further away from the side section than the main body section and separates an inner surface of the container and the insertion section.
H01M 50/477 - Spacing elements inside cells other than separators, membranes or diaphragmsManufacturing processes thereof characterised by their shape
H01M 50/103 - Primary casingsJackets or wrappings characterised by their shape or physical structure prismatic or rectangular
H01M 50/15 - Lids or covers characterised by their shape for prismatic or rectangular cells
H01M 50/474 - Spacing elements inside cells other than separators, membranes or diaphragmsManufacturing processes thereof characterised by their position inside the cells
H01M 50/538 - Connection of several leads or tabs of wound or folded electrode stacks
H01M 50/54 - Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
A battery control device which obtains a state of charge of a secondary battery from characteristics representing a relationship of a state of charge and a voltage of the secondary battery comprises a calling unit which calls a first characteristic among a plurality of the characteristics stored in advance based on use history information of the secondary battery, a correction limit width designation unit which designates a correction limit width for prescribing a tolerance level of correcting the first characteristic, and a direct detection correction unit which creates a second characteristic in which the first characteristic has been corrected according to the correction limit width based on a current value and a voltage value of the secondary battery, wherein the state of charge of the secondary battery is obtained using the second characteristic.
G01R 31/3842 - Arrangements for monitoring battery or accumulator variables, e.g. SoC combining voltage and current measurements
G01R 31/374 - Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with means for correcting the measurement for temperature or ageing
G01R 31/392 - Determining battery ageing or deterioration, e.g. state of health
H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
A battery having stacked batteries tied with holding members and mounted on a mounting object, wherein at least a battery bottom face is covered with an insulation member; the battery bottom face is opposite the mounting object's side; and the holding members have end members at both ends of the batteries in a stacking direction, and side members to surround, together with the end members, the batteries. Each of the end members has, on the mounting object's side, a first area having a main part, and a second area at first legs and protrudes towards the mounting object's side beyond the first area and the battery bottom face. The end member has a second area located on both sides of the first area. A spacer located between the plurality of stacked batteries protrudes towards the mounting object's side beyond the third area and the battery bottom.
H01M 50/233 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by physical properties of casings or racks, e.g. dimensions
H01M 50/264 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
H01M 50/291 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
44.
LITHIUM ION SECONDARY BATTERY AND METHOD FOR MANUFACTURING SAME
A lithium ion secondary battery with increased durability and capacity includes a positive electrode, a negative electrode, and a separator. The positive electrode includes a current collector foil and an electrode mixture layer disposed on a surface of the current collector foil. The positive electrode mixture layer includes a superficial layer portion and a deep layer portion. The superficial layer portion opposes the negative electrode via the separator. The deep layer portion is disposed between the superficial layer portion and the current collector foil. The superficial layer portion contains positive electrode active material particles having an average particle diameter larger than an average particle diameter of positive electrode active material particles contained in the deep layer portion. A space ratio between the positive electrode active material particles in the superficial layer portion is lower than a space ratio between the positive electrode active material particles in the deep layer portion.
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
H01M 10/0587 - Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
Provided is a battery module capable of keeping a joint strength high at a joint between dissimilar metals of a busbar. The battery module 100 includes a plurality of battery cells each having cell terminals 1p and 1n, and a busbar 2A joining the terminals of the battery cells 1. The busbar 2A has a plurality of connection face portions 2c1 and 2c2 each connected to a corresponding one of the terminals 1p and 1n of the battery cells 1; a plurality of rising portions each rising from a corresponding one of the plurality of connection face portions 2c1 and 2c2; and a connection portion connecting the plurality of rising portions. The busbar includes a copper portion 2e including copper and an aluminum portion 2f including aluminum, and a joint between the copper portion 2e and the aluminum portion 2f are located on the connection face portion 2c1, 2c2.
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/50 - Current conducting connections for cells or batteries
H01M 50/503 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
H01M 50/55 - Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
H01M 50/553 - Terminals adapted for prismatic, pouch or rectangular cells
H01M 50/566 - Terminals characterised by their manufacturing process by welding, soldering or brazing
H01M 50/569 - Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
46.
SOLID ELECTROLYTE BATTERY, MANUFACTURING METHOD FOR SOLID ELECTROLYTE BATTERY, AND TRANSPORTATION APPARATUS
A solid electrolyte battery includes a charge-discharge body including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer between the positive electrode layer and the negative electrode layer, an outer body housing the charge-discharge body, and collectors exposed to the outside of the outer body at respective one ends and electrically connected to the positive electrode layer and the negative electrode layer at the respective other ends. The outer body is formed of a heat welding layer covering the charge-discharge body from the outside and including an insulative, first resin, a heat-resistant layer stacked on the outside of the heat welding layer to cover the heat welding layer from the outside and including an insulative, second resin having a higher melting point than the first resin, and a metal layer stacked on the heat-resistant layer to cover the heat-resistant layer from the outside and including metal.
H01M 50/129 - Primary casingsJackets or wrappings characterised by the material having a layered structure comprising three or more layers with two or more layers of only organic material
H01M 50/178 - Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for pouch or flexible bag cells
H01M 50/186 - Sealing members characterised by the disposition of the sealing members
In a battery pack with bus bars, a first conductive member includes a first joining portion joined to a first positive electrode terminal and a first extending portion extending from the first joining portion, a second conductive member includes a second joining portion joined to a second negative electrode terminal and a second extending portion extending from the second joining portion, the first conductive member and the second conductive member are made of different materials, the first conductive member and the second conductive member are connected by a third joining portion, and the third joining portion is formed on an overlapping portion of the first extending portion and the second extending portion with a distance closer to the third joining portion out of a distance between the first joining portion and the third joining portion and a distance between the second joining portion and the third joining portion.
H01M 50/503 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/516 - Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
H01M 50/55 - Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
H01M 50/569 - Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
48.
BATTERY MODULE AND METHOD FOR INSPECTING THE BATTERY MODULE
Provided are a battery module which can be efficiently inspected without applying an electrical load to the battery module and a method for inspecting the battery module. This battery module has a unit cell 13 equipped with a battery container 13a accommodating battery elements, a thermistor 23 disposed in contact with an outer surface of the battery container 13a and thermally connected thereto, and an electrically insulating, rigid insulation cover 17 partially covering the battery container 13a and pressing the thermistor 23 against the battery container 13a, wherein a through hole 26 through which a heat application means 28, 29 passes is formed in the insulation cover 17, and the thermistor 23 is disposed at a position outside a heat application area formed when the through hole 26 is orthographically projected on a planar section 21 of the battery container 13a.
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/249 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for aircraft or vehicles, e.g. cars or trains
H01M 50/569 - Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
An object of the present invention is to provide a lithium ion secondary battery having a high power over a wide range of low SOC to high SOC while securing a battery capacity, and having a good storage property (a capacity retention rate). One aspect of the present embodiment includes a lithium ion secondary battery which includes: a positive electrode; and a negative electrode, in which the negative electrode includes a current collector and a negative electrode active material layer disposed on at least one side of the current collector, the negative electrode active material layer includes a negative electrode active material including graphite particles (A) and graphite particles (B) on which amorphous carbon fine particles are supported, and the number of the amorphous carbon fine particles per unit area is 0.4 pieces/μm2 or more in the graphite particles (B) on which the amorphous carbon fine particles are supported.
This battery pack comprises: a plurality of batteries (100) which include a charge/discharge body (current collector) and are stacked; holding members (a first end spacer (201), a cell spacer (202), a second end spacer (203), a first end block (211), and a second end block (212)) holding the batteries (100) with respect to or along a stacking direction X of the batteries (100); and an adhesive (11) adhering the batteries (100) and the holding members to each other, or the holding members together. The holding members have at least one of: a first surface which, with respect to the stacking direction, has an area overlapping the charge/discharge body and has a recessed cavity (202e) opposite the batteries (100); and a second surface which, along the stacking direction, is opposite the plurality of batteries (100) and has a recessed cavity opposite the batteries (100). The adhesive (11) is provided in the cavity (202e).
H01M 50/291 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
H01M 10/647 - Prismatic or flat cells, e.g. pouch cells
H01M 10/658 - Means for temperature control structurally associated with the cells by thermal insulation or shielding
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/262 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks
H01M 50/264 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
H01M 50/289 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs
H01M 50/293 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs characterised by the material
Provided is a battery pack including: a first battery group in which a plurality of storage batteries having a battery can side surface and a battery can bottom surface linked to the battery can side surface are laminated so that the battery can side surfaces face each other; a second battery group in which a plurality of storage batteries having a battery can side surface and a battery can bottom surface linked to the battery can side surface are laminated so that the battery can side surfaces are face each other; and a case housing the first battery group and the second battery group, wherein the facing surfaces of the first battery group and the second battery group are directly or indirectly thermally connected to each other.
H01M 10/647 - Prismatic or flat cells, e.g. pouch cells
H01M 10/653 - Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
H01M 10/656 - Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
H01M 50/211 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
H01M 50/289 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs
Provided is a rectangular secondary battery which increases dielectric strength and which can fix an insulating protective film and a wound electrode body to each other in consideration of productivity. This rectangular secondary battery has a wound electrode body 3 and an insulating protective film 2 which covers the wound electrode body 3 by being wound on the wound electrode body or by being folded along the outer shape of the wound electrode body. The insulating protective film 2 has at least: side circumferential surface parts 51b, 51C that extend in the circumferential direction of the side circumferential surface of the wound electrode body 3 to cover the wound electrode body 3; and a bottom surface part 52a that covers the bottom surface of the wound electrode body. The side circumferential surface of the wound electrode body has formed thereon an end surface overlapping part 51h in which end surface parts of the insulating protective film 2 on opposite sides thereof overlap each other. The end surface overlapping part 51h has penetration regions 51f-1, 51G-1 that reach the side circumferential surface of the wound electrode body. An area around the penetration regions 51f-1, 51G-1 of the end surface overlapping part and the side circumferential surface of the wound electrode body are bonded and fixed through the penetration regions 51f-1, 51G-1 by means of an electrically insulating adhesive tape 20a.
H01M 10/04 - Construction or manufacture in general
H01M 10/0587 - Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
H01M 50/474 - Spacing elements inside cells other than separators, membranes or diaphragmsManufacturing processes thereof characterised by their position inside the cells
H01M 50/477 - Spacing elements inside cells other than separators, membranes or diaphragmsManufacturing processes thereof characterised by their shape
H01M 50/586 - Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries inside the batteries, e.g. incorrect connections of electrodes
This battery pack 11 comprises: a duct 234 that is provided with a battery cell group 800 in which a plurality of battery cells 701 are arranged, the duct 234 extending along the battery cell group 800; and a bottom-surface part 35b of the duct 234 that faces the battery cell group 800 and is combined with the duct 234 to constitute a flow path 780 via which a gas discharged from at least one of the plurality of battery cells 701 is guided, the duct 234 being pressed against the battery cell group 800 via the bottom-surface part 35b.
H01M 50/367 - Internal gas exhaust passages forming part of the battery cover or caseDouble cover vent systems
H01M 50/204 - Racks, modules or packs for multiple batteries or multiple cells
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/271 - Lids or covers for the racks or secondary casings
H01M 50/291 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
H01M 50/507 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
The present invention provides a battery pack that makes it possible to fix a battery group together without use of a side rail for connecting a pair of end plates together. A battery pack 1 according to the present invention comprises: a battery body 20 that has a battery group 30 in which a plurality of single cells 31 are stacked and a pair of end plates 40 which are disposed at both ends of the battery group 30 in the stacking direction; a mounting part to which the battery body 20 is mounted; and a bracket 50 that fixes the battery body 20 to the mounting part, and holds the battery body 20 in a state in which pressure is applied in the stacking direction.
H01M 50/262 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/264 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
H01M 50/291 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
H01M 50/35 - Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
The present invention provides a battery pack which does not require a bus bar case. The present invention provides a battery pack which is obtained by stacking a plurality of battery cells in a first direction, and which is characterized in that: a first spacer or a second spacer is disposed between the plurality of battery cells; the first spacer has a first side that extends in a second direction; the first side is provided with a first U-shaped part that extends in the first direction; the first spacer is provided with a first partition wall on the outer side of the first U-shaped part in the second direction; the second spacer has a second side that extends in the second direction; the second side is provided with a second U-shaped part that extends in the first direction and has a U-shaped cross-section; a bus bar housing part is formed between the first partition wall that is formed on the first spacer and another first partition wall that is formed on another first spacer which is adjacent to the first spacer in the first direction; and the first U-shaped part and the second U-shaped part are continuously formed in the first direction, thereby forming a wiring housing part that extends in the first direction.
H01M 50/291 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/289 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs
H01M 50/298 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by the wiring of battery packs
H01M 50/35 - Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
H01M 50/358 - External gas exhaust passages located on the battery cover or case
H01M 50/505 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing comprising a single busbar
H01M 50/507 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
56.
METAL JOINING STRUCTURE AND ASSEMBLED BATTERY USING SAME
Provided are: a dissimilar metal joining material that improves joining reliability at the joint of dissimilar metals and that has improved fatigue strength; and an assembled battery using the same. At the joint of two dissimilar metals 1 and 2 is formed at least: a solid-phase joining part 5 having one or more solid-phase joining surfaces; and a fused joining part 4 having one or more molten metal sections. The fused joining part isclose to or overlapping the solid-phase joining part 5. The solid-phase joining part 5 and the fused joining part 4 are formed in coexistence at the joint of two dissimilar metals 1 and 2, and as a result thereof, it is possible to suppress reduction in fatigue strength and generation of delamination fracture at the joint of the dissimilar metals.
B23K 20/00 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
B23K 20/10 - Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
B23K 26/322 - Bonding taking account of the properties of the material involved involving coated metal parts
B23K 26/323 - Bonding taking account of the properties of the material involved involving parts made of dissimilar metallic material
H01M 50/505 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing comprising a single busbar
H01M 50/516 - Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
The present invention is a battery comprising an electrode body (charge/discharge body 10) in which a positive electrode sheet 11 and a negative electrode sheet 12 are laminated, wherein the positive electrode sheet includes: a positive electrode current collecting layer 11S having a positive electrode current collecting foil body 11a and a positive electrode current collecting tab 11b protruding from a widthwise edge 11c of the positive electrode current collecting foil body; a positive electrode active material layer 11T laminated on the positive electrode current collecting foil body excluding an edge region 720 in the width direction of the positive electrode current collecting foil body; and a heat-resistant layer 11Q laminated on the edge region, a base region 710 of a positive electrode current collecting tab, and the positive electrode active material layer.
In the present invention, an electrode terminal (negative electrode terminal 420) comprises: a first member 421 that is electrically connected to a charging-discharging body 100 of a battery 1, and that includes a first metal (copper or a copper alloy); a second member 422 that is provided with a first insertion unit 422x into which the first member 421 is inserted, said second member 422 being joined to the first member 421, and including the first metal (copper or a copper alloy); and a third member 423 that is provided with a second insertion unit 423x into which the first member 421 is inserted, said third member 423 being joined to the second member 422, and including a second metal (aluminum or an aluminum alloy) of a material that is different from the first metal (copper or a copper alloy). The third member 423 electrically connects one battery 1 and another battery 1 and is joined to a conduction member (bus bar 10) at a surface P facing the conduction member (bus bar 10), said conduction member (bus bar 10) containing the second metal (aluminum or an aluminum alloy). The first member 421 and the third member 423 are adjacent to each other on the facing surface P side.
H01M 50/562 - Terminals characterised by the material
H01M 50/503 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
H01M 50/505 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing comprising a single busbar
H01M 50/516 - Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
A battery management apparatus 102 calculates a state of charge SOC representing the state of charge of a chargeable and dischargeable battery, a charge deterioration degree SOHQ and a resistance deterioration degree SOHR, corrects the calculated SOHR, corrects an mid resistance MidDCR corresponding to a mid voltage MidVoltage according to a correction coefficient in accordance with SOHR for MidDCR (corrected SOHR), calculates MidVoltage (a mid voltage present between a discharge voltage in the current state of charge of the battery, and a voltage value representing a discharge voltage in the minimum state of charge of the battery), calculates the remaining capacity of the battery based on SOC and SOHQ, and calculates the available energy of the battery based on the mid voltage and the remaining capacity.
G01R 31/392 - Determining battery ageing or deterioration, e.g. state of health
G01R 31/367 - Software therefor, e.g. for battery testing using modelling or look-up tables
G01R 31/374 - Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with means for correcting the measurement for temperature or ageing
G01R 31/387 - Determining ampere-hour charge capacity or SoC
G01R 31/389 - Measuring internal impedance, internal conductance or related variables
H01M 10/42 - Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
A battery pack has a plurality of batteries, a bus bar connected to electrode terminals of the plurality of batteries, a terminal connected to the bus bar, and an electric wire connected to the terminal. The terminal has a first base portion, a second base portion, and a protrusion portion. The first base portion is located on one end side in a predetermined direction of the terminal and is bonded to the bus bar in a vertical direction with respect to the predetermined direction by ultrasonic welding. The second base portion is located on the other end side in the predetermined direction of the terminal and is connected to the electric wire. The protrusion portion is located between the first base portion and the second base portion and protrudes in the vertical direction.
H01M 50/569 - Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/296 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by terminals of battery packs
H01M 50/298 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by the wiring of battery packs
H01M 50/507 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
H01M 50/516 - Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
The purpose of the present invention is to manufacture a battery pack that has a plurality of battery blocks at a low cost. An example of a specific configuration of the present invention is as described below. A battery pack comprising: a first battery block having a plurality of first batteries 1 and a plurality of first spacers 20 alternately stacked in a first direction; and a second battery block having a plurality of second batteries 1 and a plurality of second spacers 20 alternately stacked in the first direction, said first and second battery blocks being arranged in a direction that is perpendicular to a second direction, wherein the first spacers and the second spacers are formed integrally with a first coupling portion interposed therebetween, the first coupling portion 22, 23 being provided with inter-block side rails 70 that collectively press the first battery block and the second battery block in the first direction.
H01M 50/289 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/262 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks
H01M 50/264 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
H01M 50/291 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
H01M 50/293 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs characterised by the material
H01M 50/296 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by terminals of battery packs
The present disclosure provides an electrode for a secondary battery capable of measuring the width of a first mixture layer and the width of a second mixture layer when the first mixture layer and the second mixture layer are stacked and formed on the surface of a metal foil. A positive electrode body (electrode for a secondary battery) includes a strip-like positive electrode foil and a positive electrode mixture layer provided on the positive electrode foil. The positive electrode mixture layer includes a first positive electrode mixture layer provided on the positive electrode foil and a second positive electrode mixture layer provided on the first positive electrode mixture layer. The first positive electrode mixture layer has a width greater than a width of the second positive electrode mixture layer.
The purpose of the present invention is to provide a negative electrode for lithium ion secondary batteries that can improve battery charging performance and long lifespan. A negative electrode for lithium ion secondary batteries according to the present invention comprises a negative electrode current collector and a negative electrode active material layer laminated on the negative electrode current collector. The negative electrode active material layer includes a negative electrode first active material layer laminated on the negative electrode current collector and a negative electrode second active material layer laminated on the negative electrode first active material layer. The negative electrode first active material layer contains a negative electrode first active material. The negative electrode second active material layer contains a negative electrode second active material. The BET specific surface area of the negative electrode second active material is greater than the BET specific surface area of the negative electrode first active material.
H01M 4/13 - Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulatorsProcesses of manufacture thereof
H01M 4/58 - Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFySelection of substances as active materials, active masses, active liquids of polyanionic structures, e.g. phosphates, silicates or borates
H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
The purpose of the present invention is to provide a positive electrode which can achieve both high energy density and long service life for a lithium ion secondary battery. A lithium ion secondary battery positive electrode according to the present invention comprises a positive electrode current collector and a positive electrode active material layer laminated on the positive electrode current collector. The positive electrode active material layer includes a first positive electrode active material layer laminated on the positive electrode current collector and a second positive electrode active material layer laminated on the first positive electrode active material layer. The first positive electrode active material layer contains a first positive electrode active material containing, as a main component, a lithium-containing composite oxide containing Li and Ni. The second positive electrode active material layer contains a second positive electrode active material containing, as a main component, a lithium-containing composite oxide containing Li and Ni. The mole fraction of Ni in the second positive electrode active material of the second positive electrode active material layer is less than the mole fraction of Ni in the first positive electrode active material of the first positive electrode active material layer.
H01M 4/131 - Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
The present invention pertains to: a negative electrode including a current collector layer, a first active material layer joined to the current collector layer, and a second active material layer joined to the first active material layer; and a battery provided with said negative electrode. In the negative electrode, the first active material layer contains: a first graphite; and 1-90 wt.% of a first elemental silicon or silicon compound with respect to the total weight of the first active material layer. Further, in the negative electrode, the second active material layer contains: a second graphite having an average particle diameter smaller than that of the first graphite; and not less than 0 wt.% but less than 1 wt.% of a second elemental silicon or silicon compound with respect to the total weight of the second active material layer. Accordingly, the durability of the battery can be improved.
The present invention relates to: a negative electrode which comprises a collector layer, a first active material layer that is bonded to the collector layer, and a second active material layer that is bonded to the first active material layer; and a battery which is provided with this negative electrode. With respect to this negative electrode, the first active material layer contains a first graphite and elemental silicon or a silicon compound. Also, with respect to this negative electrode, the second active material layer contains a second graphite which has a smaller average particle diameter than the first graphite. Also, with respect to this negative electrode, surfaces of the first active material layer in the longitudinal direction, excluding the surface that is bonded to the collector layer, are covered by the second active material layer. Also, with respect to this negative electrode, the average thickness between the upper end face of the second active material layer in the short-side direction and the upper end face of the first active material layer in the short-side direction and/or the average thickness between the lower end face of the second active material layer in the short-side direction and the lower end face of the first active material layer in the short-side direction is larger than the average thickness of the first active material layer in the stacking direction. Consequently, the present invention is able to improve the durability of a battery.
Provided is a coating die enabling coating of two layers of coating films stably. The coating die includes: a first block including a first manifold to receive a first coating liquid; a second block including a second manifold to receive a second coating liquid; and a shim sandwiched between the first block and the second block.
B05C 5/02 - Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work from an outlet device in contact, or almost in contact, with the work
B05D 1/26 - Processes for applying liquids or other fluent materials performed by applying the liquid or other fluent material from an outlet device in contact with, or almost in contact with, the surface
B05D 1/34 - Applying different liquids or other fluent materials simultaneously
B32B 37/20 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of continuous webs only
The present invention involves balancing charging rates of a plurality of batteries 111 so that the charging rates approach a first target charging rate T1 when balancing the charging rates within the range of a first charging region F1. The charging rates of a plurality of batteries are balanced so as to approach a second target charging rate T2 when balancing the charging rates within the range of a second charging region F2 that are lower than the charging rates within the range of the first charging region F1. The first target charging rate is a value obtained by determining a target so that the charging rates of the plurality of batteries after the balancing will be higher than a first average charging rate A1 that is then average value of the charging rates before the balancing. The second target charging rate is a value obtained by determining a target so that the charging rates of the plurality of batteries after the balancing will be lower than a second average charging rate A2 that is the average value of the charging rates before the balancing.
H02J 7/02 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
69.
SOLID ELECTROLYTE SHEET, AND SOLID ELECTROLYTE SECONDARY BATTERY USING SAID SOLID ELECTROLYTE SHEET
A solid electrolyte sheet capable of increasing rigidity near an end surface of the solid electrolyte sheet, and a solid electrolyte secondary battery used with the solid electrolyte sheet are provided. A solid electrolyte sheet 10 includes a base 11 formed in a plate shape containing a solid electrolyte, and a plate-shaped reinforcing part 12 formed on an outside of the base, in which the reinforcing part 12 is made of a combination of two electrical insulating members different in material, and higher in rigidity than the base 11. Since rigidity near the periphery of the solid electrolyte sheet can be increased, a risk of damage near the periphery of the solid electrolyte sheet can be reduced.
H01M 10/0585 - Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
This lithium ion secondary battery comprises a positive electrode, a negative electrode, and an electrolytic solution, wherein: the negative electrode has a current collector and a negative electrode active material layer provided on at least one side of the current collector; the negative electrode active material layer contains a negative electrode active material containing graphite particles and amorphous carbon fine particles; the electrolytic solution contains at least a non-aqueous solvent, an electrolyte salt, and an additive; and the additive contains fluorosulfonate and methoxysulfonate. Consequently, it is possible to achieve an improvement in output characteristics and an improvement in high-temperature storage characteristics in a low-SOC region of the lithium ion secondary battery.
H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries
H01M 4/131 - Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
H01M 4/133 - Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
H01M 4/36 - Selection of substances as active materials, active masses, active liquids
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
H01M 10/0567 - Liquid materials characterised by the additives
H01M 10/0568 - Liquid materials characterised by the solutes
H01M 10/0569 - Liquid materials characterised by the solvents
71.
SQUARE SECONDARY BATTERY AND MANUFACTURING METHOD THEREOF
A square secondary battery, including: a conductive container which is formed in a rectangular parallelepiped shape opened on one surface side; a lid which seals the one surface side of the container; a charge/discharge body which is housed in the container and which has electrodes respectively formed on both sides in a width direction; and an insulating member which coats the charge/discharge body and which insulates the charge/discharge body and the container from each other, wherein the insulating member is formed in a rectangular parallelepiped shape opened on one surface side and at least one side surface among a pair of side surfaces respectively opposing the electrodes of the charge/discharge body is folded in a direction of separation from the charge/discharge body along a height direction.
The purpose of the present invention is to enable highly reliable laser welding at a connection between a busbar and a voltage detection terminal in a vehicle battery pack. In order to achieve this purpose, the present invention has a configuration such as the following. The metal welded structure has a first metal member 16, a second metal member 14 having an overlapping part with the first metal member 16, and a welded part 19 formed in the overlapping part, and is characterized in that: the welded part 19 has a melted part formed by carrying out melting so as to penetrate the second metal member 14 in the thickness direction into the first metal member 16; the welded part viewed from the overlapping direction has a U-shape having a first line part and second line parts 20 that respectively extend from the lengthwise direction sides of the first line part to the corresponding end; and a width D1 between two points that are the ends of the welded part 20 and the bead width W of the welded part 20 have the relationship of D1/W≥2.
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/505 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing comprising a single busbar
H01M 50/528 - Fixed electrical connections, i.e. not intended for disconnection
H01M 50/569 - Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals
A battery control device (an assembled battery control unit 150) has a degraded battery state estimation unit 521, a storage unit 180, and an upper limit voltage estimation unit 1522. The degraded battery state estimation unit 521 estimates a first degraded state of a battery on the basis of at least any one of a use history, a capacity retention rate, and an internal resistance increase rate of the battery and estimates a second degraded state of constituent elements inside the battery with respect to each type of the battery. The storage unit 180 stores information regarding an upper limit voltage of chargeable electric power with respect to each temperature of the battery. The upper limit voltage estimation unit estimates the upper limit voltage of the chargeable electric power of the battery on the basis of the above-described information. The upper limit voltage estimation unit 1522 updates the above-described information on the basis of the first degraded state and the second degraded state.
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
G01R 31/392 - Determining battery ageing or deterioration, e.g. state of health
G01R 31/387 - Determining ampere-hour charge capacity or SoC
G01R 31/367 - Software therefor, e.g. for battery testing using modelling or look-up tables
An assembled battery including a plurality of batteries each including a container which houses a charge/discharge body, an electrode terminal on one surface of the container, a sealing member which is provided between the container and the electrode terminal sealing between the container and the electrode terminal, and a busbar joined to each of the electrode terminals of the batteries that differ from each other. Each of the electrode terminals includes an electrode terminal protruding section extending in a direction of separation from the one surface. The busbar includes a busbar hole for the electrode terminal protruding section to be fitted. The electrode terminal protruding section and the busbar hole fit to each other and abut on each other. A coupling section between an outer surface of the electrode terminal protruding section and an inner surface of the busbar hole is at least partially welded.
H01M 50/503 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
H01M 50/516 - Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
H01M 50/188 - Sealing members characterised by the disposition of the sealing members the sealing members being arranged between the lid and terminal
H01M 50/552 - Terminals characterised by their shape
H01M 50/566 - Terminals characterised by their manufacturing process by welding, soldering or brazing
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
An assembled battery includes: a plurality of batteries, each with a container that contains an electric charger/discharger and an electrolytic solution and a gas discharge unit on its one surface, wherein the plurality of batteries are stacked so that the one surface of each battery is aligned to be flush with the one surface of the other batteries; a metal first flow path member is placed opposite the surface with the gas discharge unit, and configures a first flow path unit for gas discharged from the gas discharge units of the batteries; a second flow path member that forms a second flow path unit with a smaller flow path cross-sectional area; a connector that couples the first and the second flow path unit via an opening in the first flow path member; and a guide member that partitions a space inside the connector. This configuration allows for efficient gas discharge.
This power supply control device is to be applied to a vehicle provided with an electrical device, a relay connected to the electrical device, a first power source that enables operation of the relay, and a second power source that discharges electricity to the electrical device through the relay. The power supply control device comprises: a DCDC converter that supplies power from the second power source to the relay and that serves as a backup for the first power source; a third power source that is charged by the first power source and that outputs the charged power to the relay; and a control unit that controls operations of the DCDC converter and the second power source. The control unit turns the DCDC converter off when the voltage of the third power source is equal to or higher than a first threshold value, and turns the DCDC converter on when the voltage of the third power source is equal to or lower than a second threshold value that is lower than the first threshold value.
H02J 7/34 - Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
B60L 1/00 - Supplying electric power to auxiliary equipment of electrically-propelled vehicles
B60L 3/00 - Electric devices on electrically-propelled vehicles for safety purposesMonitoring operating variables, e.g. speed, deceleration or energy consumption
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
The present invention includes: A DC/DC converter that, serving as a back-up for a first power supply, supplies power from a second power supply to a relay; a third power supply that is charged by the first power supply and outputs the charged power to the relay; a switch of the third power supply; and a control unit that controls the DC/DC converter, the switch, and the second power supply. In a state where the control unit turns OFF the DC/DC converter, and turns the switch ON to cause the third power supply to be in a charging state, the control unit: turns the switch OFF to stop the charging of the third power supply, if the voltage of the third power supply is at least a first threshold; turns the switch ON to restart charging of the third power supply, if the voltage of the third power supply is no more than a second threshold which is lower than the first threshold; and turns the DC/DC converter ON, if the voltage of the third power supply is no more than a third threshold which is lower than the second threshold.
H02J 7/34 - Parallel operation in networks using both storage and other DC sources, e.g. providing buffering
B60L 1/00 - Supplying electric power to auxiliary equipment of electrically-propelled vehicles
B60L 3/00 - Electric devices on electrically-propelled vehicles for safety purposesMonitoring operating variables, e.g. speed, deceleration or energy consumption
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
H02J 9/06 - Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over
To obtain a small-sized busbar in which a portion overlapping a terminal part of a battery is flat while stress applied to a joining surface is mitigated. A battery pack 1 according to the present invention has: a battery group in which a plurality of unit batteries 2 having positive-electrode terminals 2a and negative-electrode terminals 2b are stacked, with the positive-electrode terminal 2a of one unit battery 2A among mutually adjacent unit batteries 2 and the negative-electrode terminal 2b of the other unit battery 2B being adjacent in the stacking direction; and a busbar 10 for joining the positive-electrode terminal 2a of the one unit battery 2A and the negative-electrode terminal 2b of the other unit battery 2B. The busbar 10 has a positive-electrode plate 100 joined to the positive-electrode terminal 2a of the one unit battery 2A, and a negative-electrode plate 200 joined to the negative-electrode terminal 2b of the other unit battery 2B. At least one of the positive-electrode plate 100 and the negative-electrode plate 200 has a step-form shape bent in a stepwise manner, the joining being carried out via the step-form portion.
H01M 50/503 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/516 - Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
H01M 50/526 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing characterised by the material having a layered structure
This battery control device controls a battery pack in which a plurality of batteries are connected, and is configured to: detect voltage variations in the plurality of batteries; calculate a restriction coefficient on the basis of the state of charge of the battery pack and the voltage variations; and restrict, on the basis of the restriction coefficient, inputtable/outputtable power which is the maximum power that the battery pack can receive as input or can output.
H02J 7/02 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
B60L 3/00 - Electric devices on electrically-propelled vehicles for safety purposesMonitoring operating variables, e.g. speed, deceleration or energy consumption
B60L 50/60 - Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
B60L 58/12 - Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
B60L 58/16 - Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
80.
LITHIUM ION SECONDARY BATTERY AND METHOD FOR PRODUCING SAME
A lithium ion secondary battery can suppress the deterioration of the insulating property of a positive electrode insulating layer by preventing the material of the positive electrode insulating layer from sinking into a positive electrode active material layer. A lithium ion secondary battery according is a lithium ion secondary battery including a positive electrode and a negative electrode that are laminated upon each other. The lithium ion secondary battery is characterized in that the positive electrode includes: a positive electrode foil; a positive electrode active material layer formed on a surface of the positive electrode foil; and a positive electrode insulating layer formed on a surface of the positive electrode active material layer, in which the positive electrode active material layer includes a positive electrode active material and a first nonaqueous binder, and the positive electrode insulating layer includes an inorganic filler, a second nonaqueous binder, and a dispersant.
H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H01M 4/525 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
H01M 4/505 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
H01M 10/0587 - Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
A battery pack 1 has: a plurality of batteries 100 that are laminated; a support member (intermediate block 212) that is adjacent to the batteries 100 along the width direction Y intersecting the lamination direction X of the batteries 100 and that supports the batteries 100; a control member (control substrate 401) that is provided on one-end side (controller unit 400 side) in the width direction Y and that controls the plurality of batteries 100; and a communication wire (electric wire 40) that is electrically connected to the control substrate 401 and that extends from the controller unit 400 side to the other-end side (junction unit 700 side) opposite to the controller unit 400 side along the width direction Y. The intermediate block 212 has electric or magnetic shielding properties. An electric wire 405 is disposed, opposite to the intermediate block 212, in a region ranging from the controller unit 400 side to the junction unit 700 side.
H01M 50/298 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by the wiring of battery packs
H01M 50/204 - Racks, modules or packs for multiple batteries or multiple cells
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/284 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with incorporated circuit boards, e.g. printed circuit boards [PCB]
H01M 50/505 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing comprising a single busbar
A battery assembly 1 comprises: a stacked plurality of batteries 100; holding members (first end block 211 and second end block 213) which extend in an intersecting direction (width direction Y) that intersects a stacking direction X of the plurality of batteries 100 at ends thereof in the stacking direction X, and which hold the plurality of batteries 100; a control portion (controller unit 400) for controlling the plurality of batteries 100; an input/output portion (junction unit 700) which is provided along the stacking direction X and into/from which electric power of the plurality of batteries 100 is input/output via the controller unit 400; and fastening members (fastening bolts 241) for directly fastening the first end block 211, the second end block 213, and a housing (case 721) of the junction unit 700 to one another.
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/262 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks
A battery pack 1 includes a battery 100, a busbar (a negative electrode-side connection terminal 709) electrically connecting the battery 100 and a terminal (a terminal attached to a power supply cable) of an external device, and a holding member (a case 721) that holds the negative electrode-side connection terminal 709 and to which the terminal of the power supply cable is attached via the negative electrode-side connection terminal 709. The negative electrode-side connection terminal 709 extends in an elongated manner toward the case 721 (the holding member) side, and said case 721 is equipped with insulating properties. The negative electrode-side connection terminal 709 includes a protrusion 709f protruding toward the case 721 side. The protrusion 709f extends in the short-side direction of the negative electrode-side connection terminal 709 on the tip side of the negative electrode-side connection terminal 709 in the lengthwise direction. The case 721 includes an attachment section (an insertion section 721g) to which the protrusion 709f is attached with at least a partial gap therebetween.
H01M 50/296 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by terminals of battery packs
A battery pack 1 comprises: batteries 100; a control member (control substrate 401) for controlling the batteries 100; a communication line (electric wire 405) that is conductively connected to the control substrate 401; a coating member 422 that is coated onto the electric wire 405; and a fastening member 421 that fastens the electric wire 405 with the coating member 422 therebetween. The coating member 422 includes a fastening section 422c that is fastened by the fastening member 421 by being surrounded thereby, and a coated section (first coated section 422a) that is exposed from the fastening member 421. The first coated section 422a is positioned further to the control substrate 401 side than the fastening member 421, and includes a portion having an outer diameter (D1 > D2) larger than that of the fastening section 422c prior to being fastened by the fastening member 421.
H01M 50/298 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by the wiring of battery packs
The present invention provides lithium-ion secondary battery having exceptional adhesion between an electrode mixture layer and an electronic insulating layer provided thereon. This lithium-ion secondary battery comprises: a positive electrode provided with a positive electrode current collector, a positive electrode mixture layer provided on the positive electrode current collector, and a positive electrode electronic insulating layer provided on the positive electrode mixture layer; and a negative electrode provided with a negative electrode current collector, a negative electrode mixture layer provided on the negative electrode current collector, and a negative electrode electronic insulating layer provided on the negative electrode mixture layer. The height of recesses and projections at the interface between the positive electrode mixture layer and the positive electrode electronic insulating layer is 2 µm or greater. The height of recesses and projections at the interface between the negative electrode mixture layer and the negative electrode electronic insulating layer is 2 µm or greater.
The present invention addresses the problem of obtaining a battery system monitoring device capable of suppressing erroneous detection of a diagnosis abnormality in an integration circuit caused by a low-frequency ripple noise. The battery system monitoring device (100) removes first noise included in a cell voltage of a plurality of single cells (101) which are connected in series on the basis of a first time constant, and calculates a cell total voltage by totaling the cell voltages of the plurality of single cells (101) from which the first noise has been removed. Second noise included in a cell voltage between the positive electrode of the highest single cell (101) of the plurality of single cells connected in series and the negative electrode of the lowest single cell (101) thereof is removed on the basis of a second time constant, and VBLK voltage, which is the cell voltage from which the second noise has been removed, is measured. On the basis of the cell total voltage and the VBLK voltage, a determination regarding whether or not to permit a diagnosis of the state of the plurality of single cells (101) is made, and the diagnosis about the state of the plurality of single cells (101) is performed when it has been determined that the diagnosis may be performed.
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
H02J 7/02 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from AC mains by converters
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
Provided is a battery (1) that has a safety valve (a rupture valve (80)) that has relatively high durability but can efficiently discharge gas from inside the battery (1) when ruptured. A battery (1) includes a charging/discharging body (10), a packaging body (50) that houses the charging/discharging body (10), and a safety valve (a rupture valve (80)) that is provided to the packaging body (50) and opens from the inside of the packaging body (50) toward the outside when the pressure inside the packaging body (50) has reached at least a prescribed value. The rupture valve (80) is thinner than the packaging body (50). A ring-shaped edge part (81) of the rupture valve (80) that connects to the packaging body (50) includes a first edge part (81a) that is arc-shaped and a second edge part (81b) that is linear or has a larger radius than the first edge part (81a). A groove is provided in at least the first edge part (81a).
A battery pack 1 comprises a plurality of stacked batteries 100, a spacer (a cell spacer 202, a first intermediate spacer 203, and a second intermediate spacer 204) provided between adjacent batteries 100 along a stacking direction X of the batteries 100 and holding the adjacent batteries 100, and a holding member (first side plate 231 and second side plate 232) holding the plurality of batteries 100 along the stacking direction X. For example, the cell spacer 202 includes a protruding portion 202a protruding from the battery 100 toward, for example, the second side plate 232. For example, the second side plate 232 includes an accommodating portion 232d provided with a cavity having a recessed shape for accommodating the protruding portion 202a.
H01M 50/264 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
This battery pack is formed by tightly binding a plurality of laminated batteries by means of a holding member and placing the same on a placement target. At least a battery bottom surface of each of the plurality of batteries is covered with an insulating member. The battery bottom surface is disposed to face the placement target side. The holding member has: end members disposed on both ends in the battery lamination direction; and side members that are connected to the end members and that surround the plurality of batteries together with the end members. The end members have, on the placement target side: first regions constituting main sections; and second regions formed on first leg parts and protruding to the placement target side with respect to the first regions and the battery bottom surfaces. The end members have the second regions disposed on both sides of the first regions. Spacers that are disposed between the plurality of laminated batteries have, on the placement target side: third regions; and fourth regions formed on second leg parts and protruding to the placement target side with respect to the third regions and the battery bottom surfaces.
H01M 50/262 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks
The present invention addresses the problem of accurately obtaining an amount of electric power capable of being input or output by a battery. This battery control device comprises: a correction factor calculating unit for obtaining a correction factor on the basis of a deviation between a state of a secondary battery obtained from a measured value relating to the secondary battery, and a state of the secondary battery calculated using a model relating to the secondary battery; and an electric power limit value calculating unit for applying a correction based on the correction factor to calculate a value relating to electric power capable of being input or output by the secondary battery. A ratio between a voltage change of an internal resistance based on an actual measured voltage obtained by measuring a voltage of the secondary battery, and a voltage change of the internal resistance based on a model voltage obtained using a voltage equivalent circuit model of the secondary battery can be obtained as the correction factor.
G01R 31/382 - Arrangements for monitoring battery or accumulator variables, e.g. SoC
G01R 31/385 - Arrangements for measuring battery or accumulator variables
G01R 31/389 - Measuring internal impedance, internal conductance or related variables
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
This battery control device for calculating at least temperature information T in order to calculate a permitted power output of a battery includes a surface temperature detecting unit for measuring an actual surface temperature Ts of the battery, an internal temperature calculating unit for estimating an estimated internal temperature Ti of the battery instead of the actual measurement, and a temperature selecting unit for selecting and outputting either of the surface temperature Ts and the estimated internal temperature Ti as the temperature information T, wherein the temperature selecting unit determines a magnitude relationship between a true internal temperature Tt, the surface temperature Ts, and the estimated internal temperature Ti for the current battery, on the basis of information obtained by accumulating, for a plurality of time points, a charge/discharge estimated voltage Ve estimated from a charge/discharge actual voltage Vm of the battery, a charge/discharge actual current I of the battery, and state information of the battery, at a certain time point, and in accordance with the result of the determination, utilizes the selected temperature information T for control. In this way, the present invention provides a battery control device that allows the battery to be used safely while simultaneously realizing the performance of the battery.
H01M 10/48 - Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
B60L 3/00 - Electric devices on electrically-propelled vehicles for safety purposesMonitoring operating variables, e.g. speed, deceleration or energy consumption
B60L 58/24 - Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
The present invention belongs to an on-vehicle battery pack field and addresses the technical problem of providing an on-vehicle battery pack having a high level of safety irrespective of a use environment thereof. The present invention pertains to a battery pack formed by storing a battery assembly inside a metal battery case, the battery pack comprising, in the bottom of the battery case: a partitioning part for partitioning the inner surface of the bottom into a plurality of regions; and an insulating part for insulating at least a central-side region in the bottom. The battery assembly comprises: a laminate body formed by alternately laminating secondary batteries and spacers such that the secondary batteries are located at both ends thereof; and end spacers located at both ends of the laminate body. In the bottom of each of the end spacers, a protruding part is formed to protrude to the central side, of the lower surface of the battery assembly, in the lamination direction of the battery assembly. The tip of the protruding part is located on a side closer to the central side, of the lower surface of the battery assembly, in the lamination direction of the battery assembly, as compared with the installation site of the partitioning part.
H01M 50/249 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders specially adapted for aircraft or vehicles, e.g. cars or trains
H01M 50/262 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks
H01M 50/291 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
93.
LITHIUM ION SECONDARY BATTERY AND MANUFACTURING METHOD FOR NEGATIVE ELECTRODE FOR LITHIUM ION SECONDARY BATTERY
A lithium ion secondary battery is provided which has a sufficient discharge capacity and has a low internal resistance in a low SOC range. The lithium ion secondary battery includes: a positive electrode including a positive electrode mixture containing a positive electrode active material represented by the following formula: Li1+xMAO2; (where X satisfies −0.15≤X≤0.15, MA represents a group of elements including at least one selected from the group consisting of Mn and Al, Ni, and Co.); and a negative electrode including a negative electrode mixture containing a negative electrode active material containing a carbon-based material, a negative electrode additive containing a copper oxide, and a binder, in which the negative electrode mixture contains the copper oxide in an amount of 0.5 wt % or more and 15 wt % or less based on the total weight of the negative electrode active material and the negative electrode additive.
A battery assembly includes a battery body, a plurality of battery cells stacked in the battery body in a stacking direction, a pair of end components, including insulating material, each disposed at an end of the battery body in the stacking direction, and a pair of side plates, including metal, disposed on opposite sides of the battery cells and connecting to the end components. A first end component of the pair of end components includes a fixing portion, which accommodates a fixing body, to install the battery assembly to an installing body. The fixing portion and the side plates are not connected electrically to each other.
H01M 50/289 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/262 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks
H01M 50/367 - Internal gas exhaust passages forming part of the battery cover or caseDouble cover vent systems
B60L 50/64 - Constructional details of batteries specially adapted for electric vehicles
The present invention provides a battery that comprises a current collection member and an electrode collector, which are sufficiently bonded to each other. A battery 1 according to the present invention comprises: a charge/discharge body 10 which comprises, for example, a positive electrode 11 that is provided with a collector (for example, a positive electrode current collection foil 11S) and an active material; and a current collection member (for example, a positive electrode current collection plate 21) that is bonded to the positive electrode current collection foil 11S. The positive electrode current collection plate 21 comprises a first stiff part 21p which has a specific stiffness, and a second stiff part 21q which is adjacent to the first stiff part 21p and has a higher stiffness than the first stiff part 21p. The second stiff part 21q of the positive electrode current collection plate 21 and the positive electrode current collection foil 11S of the positive electrode 11 are bonded to each other.
A secondary battery module includes a plurality of battery blocks each obtained by stacking a plurality of battery cells. The secondary battery module includes a holding member adapted to hold the plurality of battery blocks and including a pair of opposed end plates, a pair of opposed side plates, and a section plate arranged between the adjacent battery blocks to partition the battery blocks; and an inter-block bus bar provided across the section plate and adapted to electrically connect the adjacent battery blocks. The inter-block bus bar has a fuse portion.
H01M 50/502 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing
H01M 50/204 - Racks, modules or packs for multiple batteries or multiple cells
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/244 - Secondary casingsRacksSuspension devicesCarrying devicesHolders characterised by their mounting method
H01M 50/262 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks
H01M 50/291 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
H01M 50/296 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders characterised by terminals of battery packs
H01M 50/50 - Current conducting connections for cells or batteries
Provided is a battery (1) capable of activating a current shut-off valve (diaphragm (31)) by using proper actuation pressure. This battery (1) comprises: a charge/discharge body (10); a current collecting member (20) (positive electrode current collector (21)) conductive to the charge/discharge body (10); the current shut-off valve (diaphragm (31)) laminated and joined to the positive current collector (21); an external terminal (positive terminal (41)) conductive to the diaphragm (31); a support (33) that supports the diaphragm (31) along the lamination direction (Z-axis direction) of the positive electrode current collector (21) and the diaphragm (31); and a low-rigidity member (protruding part (33e)) aligned with the support base (33) along the Z-axis direction and configured to have lower rigidity than the support base (33).
The present invention addresses the problem of taking measures to a battery resistance increase associated with charge and discharge cycles with respect to a solid electrolyte battery. The configuration of the present invention is as described below. The present invention provides a solid electrolyte battery which comprises a positive electrode layer, a negative electrode layer and a solid electrolyte layer that is formed between the positive electrode layer and the negative electrode layer, and which is characterized in that: the negative electrode layer comprises a first negative electrode layer 1, and a second negative electrode layer 2 that is superposed on the first negative electrode layer 1 so as to be in contact with the solid electrolyte layer 3; the active material of the first negative electrode layer 1 is a crystalline carbon 11; the active material of the second negative electrode layer 2 is an amorphous carbon 21; a negative electrode layer solid electrolyte 32 is mixed into the first negative electrode layer 1 and the second negative electrode layer 2; and (average particle diameter (D50) of negative electrode layer solid electrolyte 32) < (average particle diameter (D50) of crystalline carbon 2) < (average particle diameter (D50) of amorphous carbon 1) is satisfied.
H01M 4/587 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
H01M 10/0585 - Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
Provided is a battery pack that can suppress deterioration of a battery by suppressing heat generation due to a current flowing through a bus bar, and can improve battery performance by weight reduction. A battery pack 10 has: a first battery 1 to a fourth battery 4 stacked on each other and provided with a positive electrode external terminal 12 and a negative electrode external terminal 13 that has high electroconductivity; and, a busbar 6 for electrically connecting the positive electrode external terminal 12 of the second battery 2 on one side and the negative electrode external terminal 13 of the third battery 3 on the other side, which are arranged side by side adjacent to each other. The bus bar 6 has: a first electroconductive section 6a connected to the positive electrode external terminal 12 of the second battery 2 on the one side; a second electroconductive section 6b connected to the negative electrode external terminal 13 of the third battery 3 on the other side and having a high electroconductivity and a high specific gravity; and, a coupling section 6c for coupling the first electroconductive section 6a and the second electroconductive section 6b. The coupling section 6c is disposed in either a first region that opposes the second battery 2 on the one side or a second region that opposes the third battery 3 on the other side.
H01M 50/209 - Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
H01M 50/503 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
H01M 50/505 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing comprising a single busbar
H01M 50/526 - Interconnectors for connecting terminals of adjacent batteriesInterconnectors for connecting cells outside a battery casing characterised by the material having a layered structure
H01M 50/562 - Terminals characterised by the material
H01M 50/571 - Methods or arrangements for affording protection against corrosionSelection of materials therefor
A battery 1 comprises: a first current collector (e.g., positive electrode current collector sheet 21); a charging/discharging body 10 including an electrode tab (e.g., positive electrode tab 11b) laminated on the first current collector (e.g., positive electrode current corrector sheet 21); and a second current collector (e.g., positive electrode ribbon 23) that is laminated on the electrode tab (e.g., positive electrode tab 11b) and that has a greater heat capacity than the electrode tab (e.g., positive electrode tab 11b). The first current collector (e.g., positive electrode current collector sheet 21), the electrode tab (e.g., positive electrode tab 11b), and the second current collector (e.g., positive electrode ribbon 23) are welded.
