Abstract

Disclosed in the present invention are a current collector, an electrode sheet, and a method for manufacturing the electrode sheet. The electrode sheet comprises a current collector; the front surface of the current collector is provided with a plurality of first recesses, the back surface of the current collector is provided with a plurality of second recesses, and the plurality of second recesses and the plurality of first recesses are in one-to-one correspondence; the front surface of the current collector and the inner walls of the plurality of first recesses are provided with a front surface slurry layer, and the back surface of the current collector and the inner walls of the plurality of second recesses are provided with a back surface slurry layer. According to the present invention, the energy density of the electrode sheet can be improved, the strength and plasticity of the electrode sheet can be ensured, and in the subsequent process of laminating the electrode sheet and a separator to produce a battery cell or arranging the electrode sheet on the separator and winding same to produce a battery cell, the breakage of the electrode sheet can be avoided, improving the production efficiency.

IPC Classes  ?

• H01M 4/64 - Carriers or collectors
• H01M 4/70 - Carriers or collectors characterised by shape or form
• H01M 4/66 - Selection of materials
• H01M 50/46 - Separators, membranes or diaphragms characterised by their combination with electrodes

Abstract

Provided herein is an efficient and energy-saving system for battery formation and grading, which includes a busbar, a charging module, a discharging module, a load transfer unit, a limiting unit and a formation fixture. The busbar is connected to an external constant current source. The formation fixture is used for loading a plurality of lithium batteries to be formation and grading. The load transfer unit is used for moving a lithium battery. The limiting unit is used for intercepting and positioning the lithium battery when it reaches a designated station, and releasing the lithium battery when it is about to move to the next station. Advantageously, the charging module and the discharging module are arranged independently, so that all the charging module and the discharging module can work simultaneously without forming any idle charging circuit or discharging circuit, thereby reducing the energy loss and system cost due to idle circuit.

IPC Classes  ?

• H01M 10/058 - Construction or manufacture
• H01M 10/44 - Methods for charging or discharging
• H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries

Abstract

Provided are a method and system for manufacturing a thermal composite cell. The method for manufacturing a thermal composite cell includes the following steps: unwinding a diaphragm and unwinding the diaphragm by a diaphragm unwinding device; hot-pressing and compositing electrode plates, hot-pressing and compositing a first electrode plate on a first side of the diaphragm 1, and hot-pressing and compositing a second electrode plate on a second side of the diaphragm; performing Z-shaped folding on the diaphragm and the electrode plates; and performing pressing to form a cell. The system for manufacturing a thermal composite cell includes a diaphragm unwinding device, an electrode plate conveying device, a heat-pressing and compositing device, a folding thimble, and a pressing device.

IPC Classes  ?

• H01M 10/04 - Construction or manufacture in general

Abstract

Provided are an adhesive tape pasting device, mechanism and method for zero-tension double-faced adhesive tape pasting, which belong to foil adhesive tape pasting apparatuses. The adhesive tape pasting device comprises an unwinding station, a winding station, a winding electric motor and an adhesive tape pasting assembly, where after the unwinding station unwinds a double-faced adhesive tape and the adhesive tape pasting assembly pastes an adhesive tape of the double-faced adhesive tape onto a foil, the winding electric motor drives the winding station to wind a remaining release paper of the double-faced adhesive tape. The adhesive tape pasting device further comprises an unwinding driving assembly, where the unwinding driving assembly drives the unwinding station to carry out unwinding work, and in the adhesive tape pasting process, the unwinding work and winding work are carried out synchronously.

IPC Classes  ?

• B65H 18/10 - Mechanisms in which power is applied to web-roll spindle
• B65H 23/185 - Registering, tensioning, smoothing, or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in unwinding mechanisms or in connection with unwinding operations motor-controlled
• B65H 23/198 - Registering, tensioning, smoothing, or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in winding mechanisms or in connection with winding operations motor-controlled
• B65H 35/06 - Delivering articles from cutting or line-perforating machinesArticle or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with blade, e.g. shear-blade, cutters or perforators
• B65H 37/04 - Article or web delivery apparatus incorporating devices for performing specified auxiliary operations for securing together articles or webs, e.g. by adhesive, stitching, or stapling

Abstract

Provided are a transfer tape wheel device of an on-line tape pasting mechanism, a control method, an assembly, and a mechanism. The transfer tape wheel device of the on-line tape pasting mechanism includes a transfer tape wheel shaft and multiple transfer tape wheels. Multiple vacuum holes and multiple compressed air holes are opened on a transfer tape wheel of the multiple transfer tape wheels from an inner side to an outer side of the transfer tape wheel. A vacuum interface and a compressed air interface are separately mounted on openings at two ends of the transfer tape wheel shaft. An in-shaft vacuum main line and an in-shaft compressed air main line are disposed in a hollow channel of the transfer tape wheel shaft.

IPC Classes  ?

• B65H 20/12 - Advancing webs by suction roller
• B65H 20/14 - Advancing webs by direct action on web of moving fluid

Abstract

Provided are a cleaning cavity series for extrusion type coating, and a cleaning method. The cleaning cavity series for extrusion type coating includes a plurality of cleaning cavities, where the plurality of cleaning cavities form the cleaning cavity series, each of the plurality of cleaning cavities is provided with an inner cavity body, a cleaning cavity opening portion in communication with the inner cavity body is disposed on a side portion of each of the plurality of cleaning cavities, and cross-section outlines of the inner cavity bodies of the plurality of cleaning cavities are a series of curves with an equal chord length. The cleaning method includes: S1: evaluating an envelope line of a slurry that overflows from a lip portion of a coating head, and selecting one cleaning cavity from a cleaning cavity series to ensure that an enveloped area of the envelope line accounts for 30%-70% of the sectional area of an inner cavity body of the selected cleaning cavity; and S2: selecting a static cleaning method or a dynamic cleaning method to perform a cleaning operation on the coating head using the selected cleaning cavity from the cleaning cavity series. The cleaning cavity series for extrusion type coating, and the cleaning method using same have the advantages of having a simple structure, being convenient to apply, being low in implementation cost, and improving the cleaning effect, the coating quality and the production efficiency.

IPC Classes  ?

• B05C 11/00 - Component parts, details or accessories not specifically provided for in groups
• B08B 3/04 - Cleaning involving contact with liquid
• B08B 5/02 - Cleaning by the force of jets, e.g. blowing-out cavities
• 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

Abstract

An air suction type winding needle (1), a winding mechanism and a winding method, the air suction type winding needle (1) comprising a winding needle main body (10), a winding needle inner cavity (11) being provided inside of the winding needle main body (10), a winding needle interface (12) being provided at one end of the winding needle main body (10), and a plurality of air holes (13) being provided on a side part of the winding needle main body (10). The winding mechanism comprises a large plate (27) and a connecting frame (28); the large plate (27) and the connecting frame (28) are provided with a first turret mounting plate (21) and a second turret mounting plate (22), respectively; and at least one among the first turret mounting plate (21) and second turret mounting plate (22) is provided with an axially movable winding needle mounting shaft (101), and the air suction type winding needle (1) is fixedly mounted to the front end of the winding needle mounting shaft (101). In the air suction type winding method, a base material to be wound is adsorbed and wound by means of the air suction type winding needle (1).

IPC Classes  ?

• 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 10/058 - Construction or manufacture
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries

Abstract

A multifunctional apparatus of automatic punching, laminating, tape-preparing and cutting for a tailing end of a coiled material and a method associated therewith are provided. The apparatus is provided with a winding device and the coiled material. The coiled material is wound on a rotating shaft of the winding device. A robotic arm is disposed above the winding device. One end of the robotic arm is mounted with a punching, tape-preparing and cutting mechanism, and the other end thereof is rotatably connected to a centering and deviating-correcting mechanism fixed on a winding diameter tracking mechanism. The robotic arm is driven by a motor or a pneumatic cylinder or a hydraulic cylinder. The winding diameter tracking mechanism is slidably disposed on a rail of a rack. The apparatus and method can improve efficiencies of winding and jointing of coiled materials, and reduce production cost.

IPC Classes  ?

• B65H 19/12 - Lifting, transporting, or inserting the web rollRemoving empty core
• B32B 37/00 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
• B32B 37/12 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
• B32B 38/00 - Ancillary operations in connection with laminating processes
• B32B 38/04 - Punching, slitting or perforating
• B32B 38/10 - Removing layers, or parts of layers, mechanically or chemically
• B32B 38/18 - Handling of layers or the laminate
• B65H 19/10 - Changing the web roll in unwinding mechanisms or in connection with unwinding operations
• B65H 19/29 - Securing the trailing end of the wound web to the web roll
• B65H 35/00 - Delivering articles from cutting or line-perforating machinesArticle or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers

Abstract

An on-line automatic cleaning apparatus of slit extrusion type coating die for lithium battery and a method associated therewith are provided. The cleaning apparatus includes: a die lip, a coating steel roller, and a cleaning mechanism disposed therebetween. The cleaning mechanism includes a cleaning chamber which includes elongated sealing strips and a flow-guiding arc groove. Front and rear ends of the cleaning chamber are connected to an inlet sealing plate and an outlet sealing plate respectively. The flow-guiding arc groove is in contact with and presses upper and lower sloped surfaces of the die lip through the elongated sealing strips to seal and thereby define a closed cleaning tunnel. The inlet and outlet sealing plates are in contact with and press two ends of the closed cleaning tunnel respectively for circumferential sealing. An inlet and an outlet are connected to pipes having solenoid valves installed thereon.

IPC Classes  ?

• B05B 15/55 - Arrangements for cleaningArrangements for preventing deposits, drying-out or blockageArrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
• B08B 3/08 - Cleaning involving contact with liquid the liquid having chemical or dissolving effect
• B29C 48/08 - Flat, e.g. panels flexible, e.g. films
• B29C 48/27 - CleaningPurgingAvoiding contamination
• B29C 48/305 - Extrusion nozzles or dies having a wide opening, e.g. for forming sheets
• H01M 10/052 - Li-accumulators
• H01M 10/0585 - Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators

Abstract

Disclosed in the present invention are a method and system for manufacturing a thermal composite cell. The method for manufacturing a thermal composite cell comprises the following steps: unwinding a separator by means of a separator unwinding device; thermally pressing and compounding electrode plates: thermally pressing and compounding a first electrode plate on a first side of the separator 1, and thermally pressing and compounding a second electrode plate on a second side of the separator; performing Z-shaped folding on the separator and the electrode plates; and forming the cell by pressing. The system for manufacturing a thermal composite cell comprises the separator unwinding device, an electrode plate conveying device, a thermal pressing and compounding device, folding ejector pins and a pressing device. The method and system for manufacturing a thermal composite cell have the advantages of simple structure and low implementation cost, can effectively improve lamination accuracy and lamination quality in an actual application process, greatly improve lamination efficiency, and have better product safety.

IPC Classes  ?

• H01M 10/058 - Construction or manufacture

Abstract

Disclosed are a transfer adhesive wheel device of an online adhesive pasting mechanism, a control method, an assembly and a mechanism. The transfer adhesive wheel device of an online adhesive pasting mechanism comprises a transfer adhesive wheel shaft (1) and a plurality of transfer adhesive wheels (2), each of the transfer adhesive wheels (2) is provided with a plurality of vacuum holes and a plurality of compressed air holes from inside to outside, a vacuum connection port (31) and a compressed air connection port (32) are installed at openings in two ends of the transfer adhesive wheel shaft (1) respectively, an in-shaft vacuum main pipeline (41) and an in-shaft compressed air main pipeline (42) are arranged in a hollow channel (11) of the transfer adhesive wheel shaft (1), the in-shaft vacuum main pipeline (41) is in communication with the vacuum holes in the transfer adhesive wheels (2) by means of vacuum manifolds (51), and the in-shaft compressed air main pipeline (42) is in communication with the compressed air holes in the transfer adhesive wheels (2) by means of compressed air manifolds (52). The transfer adhesive wheel device of an online adhesive pasting mechanism, the control method, the assembly and the mechanism have the advantages of being simple in structure, small in rotation inertia, having good starting and accelerating performance etc., and the online adhesive pasting efficiency and accuracy can be improved.

IPC Classes  ?

• H01M 10/058 - Construction or manufacture

Abstract

An adhesive tape pasting device, mechanism and method for zero-tension double-faced adhesive tape pasting, belonging to foil adhesive tape pasting apparatuses. The adhesive tape pasting device comprises an unwinding station (1), a winding station (3), a winding electric motor (4) and an adhesive tape pasting assembly (6), wherein the unwinding station (1) unwinds a double-faced adhesive tape, and pastes an adhesive tape of the double-faced adhesive tape onto foil by means of the adhesive tape pasting assembly (6); and the winding electric motor (4) drives the winding station (3) to wind the remaining release paper of the double-sided adhesive tape. The adhesive tape pasting device further comprises an unwinding driving assembly (2), wherein the unwinding driving assembly (2) drives the unwinding station (1) to conduct unwinding work. In the adhesive tape pasting process, unwinding work and winding work are carried out synchronously; and the winding and unwinding servo configuration is further optimized, various working conditions are subdivided, approximately zero-tension double-faced adhesive tape pasting is achieved, and after performing adhesive tape pasting, the adhesive tape does not rebound or wrinkle, thereby improving the appearance of the foil and the adhesive tape, and thereby improving the average stress of the whole width of the foil, and reducing the tape breakage probability.

IPC Classes  ?

• B65H 35/06 - Delivering articles from cutting or line-perforating machinesArticle or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with blade, e.g. shear-blade, cutters or perforators
• B65H 37/04 - Article or web delivery apparatus incorporating devices for performing specified auxiliary operations for securing together articles or webs, e.g. by adhesive, stitching, or stapling

Abstract

Disclosed are a cavity series for pressing, coating and cleaning, and a cleaning method. The cavity series for pressing, coating and cleaning comprises a plurality of cleaning cavities (1), the plurality of cleaning cavities (1) form a cleaning cavity series, each of the cleaning cavities (1) is provided with an inner cavity body (10), a side part of each of the cleaning cavities (1) is provided with a cleaning cavity opening part (11) in communication with the inner cavity body (10), and cross-section outlines of the inner cavity bodies (10) of the plurality of cleaning cavities (1) are a series of curves with the same chord length. The cleaning method using the cleaning cavity series comprises: S1, evaluating an envelope line (5) of slurry that is overflowing from a lip part of a coating head (4), selecting one cleaning cavity (1) from a cleaning cavity series, and ensuring that the enveloped area of the envelope line (5) accounts for 30%-70% of the sectional area of an inner cavity body (10) of the selected cleaning cavity (1); and S2, by using the cleaning cavity (1) that is selected from the cleaning cavity series, selecting a static cleaning method or a dynamic cleaning method to carry out a cleaning operation of the coating head (4). The cavity series for pressing, coating and cleaning, and the cleaning method using same have the advantages of having a simple structure, being convenient to apply, being low in implementation cost, and improving the cleaning effect, the coating quality and the production efficiency, etc.

IPC Classes  ?

• B05B 15/55 - Arrangements for cleaningArrangements for preventing deposits, drying-out or blockageArrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
• 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
• B05C 11/10 - Storage, supply or control of liquid or other fluent materialRecovery of excess liquid or other fluent material

Abstract

A multi-functional coiled material tail edge automatic punching, laminating, adhesive tape preparation, cutting device, and a method, provided with a winding module (1) and a coiled material (3). The coiled material (3) is wound on a rotating shaft of the winding module (1); a mechanical arm (5) is provided above the winding module (1); one end of the mechanical arm (5) is provided with a punching-adhesive tape preparation-cutting mechanism (4), and the other end is rotatably connected to a mechanical arm centering deviation rectifying mechanism (6) fixed on a mechanical arm roll diameter tracking mechanism (7), and the mechanical arm (5) is driven to rotate by a motor or an air cylinder or an oil cylinder; the mechanical arm roll diameter tracking mechanism (7) is slidably provided on a guide rail of a frame. The device and the method have the functions of automatic roll diameter identification, adhesive tape attaching, neatness and good consistency of edge distance during double-sided adhesive tape preparation, automatic cut-off, waste collection and the like, so that the probability of material breakage and wrinkling is reduced, and few wastes are generated; the winding and tape slicing efficiency of the coiled material is improved; production costs are lowered.

IPC Classes  ?

• B65H 19/29 - Securing the trailing end of the wound web to the web roll

Abstract

An on-line fully automatic cleaning apparatus and method for a lithium battery slot extrusion coating die. The apparatus has a die lip (9) and a coating steel roller (10), and a cleaning mechanism is provided between the die lip (9) and the coating steel roller (10). The cleaning mechanism comprises a cleaning chamber plate (1), the cleaning chamber plate (1) comprises sealing strips (11) and a flow guide arc slot (12), and front and rear end portions of the cleaning chamber plate (1) are connected to an inlet sealing plate (2) and an outlet sealing plate (3). The sealing strips (11) are embedded or inserted in parallel at the upper and lower sides of the flow guide arc slot (12). The flow guide arc slot (12) is in contact with upper and lower inclined surfaces of the die lip (9) by means of the sealing strips (11) and is pressed and sealed to form a closed cleaning tunnel (13). The inlet sealing plate (2) and the outlet sealing plate (3) are respectively in contact with and compressed against two ends forming the closed cleaning tunnel (13) and circumferentially seal same, the inlet and the outlet are both connected to a pipeline, and an electromagnetic valve is mounted on the pipeline. When the coating is stopped, the device automatically opens all valves to execute a slurry circulation in the die and a periodical flushing, drying and cleaning procedure of the lip slot of the die, so that no slurry is deposited and no air is present in the die, the lip slot has no dried slurry and the lip keeps clean.

IPC Classes  ?

• 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
• B05B 15/55 - Arrangements for cleaningArrangements for preventing deposits, drying-out or blockageArrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids