A manual return type thermal protector 1 includes: a pair of lead terminals 30 which are arranged in a state in which end parts thereof are separated from each other, and which constitute a part of an electric circuit; a moving-side case 20 that is movable with respect to the pair of lead terminals 30; a connection terminal 40 disposed between the pair of lead terminals 30 and the moving-side case 20; a coil spring 50 that exerts a biasing force on the connection terminal 40 so as to separate the connection terminal 40 from the pair of lead terminals 30; a heat-responsive member 60 in which heat at or above a prescribed temperature causes deformation in a direction that intersects the direction of movement of the moving-side case 20; and an engagement member 70 that holds the moving-side case 20 so that the connection terminal 40 is pressed against the pair of lead terminals 30 in opposition to the biasing force of the coil spring 50, and engages the moving-side case 20 at a plurality of positions such that the hold on the moving-side case 20 is released due to the deformation of the heat-responsive member 60.
This breaker (100) is provided with: a first terminal piece (1) that is connected to an external circuit; a second terminal piece (2) that has a fixed contact (21); a movable piece (4) that has an elastic part (43) and a movable contact (41), is connected to the first terminal piece (1), and presses the movable contact (41) to bring the movable contact (41) into contact with the fixed contact (21); a thermally-actuated element (5) that is in contact with the movable piece (4) and deforms as the temperature changes, thereby causing the movable piece (4) to transition from a conductive state to a cut-off state; and a resin base (7) for accommodating the first terminal piece (1), the second terminal piece (2), the movable piece (4), and the thermally-actuated element (5). The breaker (100) further includes a heat detection terminal (6) that protrudes from the bottom surface of the resin base (7), receives heat from the outside of the resin base (7), and transmits the heat to the thermally-actuated element (5).
A breaker (100) comprises: a first terminal piece (1) that is connected to an external circuit; a second terminal piece (2) that has a fixed contact (21); a movable piece (4) that has an elastic part (43) and a movable contact (41), is connected to the first terminal piece (1), and presses the movable contact (41) against the fixed contact (21) to bring the movable contact into contact with the fixed contact; a thermal actuator (5) that, by deformation due to a temperature change, causes the movable piece (4) to transition from a conduction state in which the movable contact (41) is in contact with the fixed contact (21) to a cutoff state in which the movable contact (41) is separated from the fixed contact (21); and a resin base (7) that accommodates the movable piece (4) and the thermal actuator (5). The first terminal piece (1) has a first embedded part (13) embedded in the resin base (7), and the second terminal piece (2) has a second embedded part (23) embedded in the resin base (7). The first embedded part (13) and the second embedded part (23) at least partially overlap when viewed in the short direction of the movable piece (4).
[Problem] To provide a breaker that makes it possible to easily return a thermally actuated element to an initial state. [Solution] A breaker 1 comprises: a fixed piece 2 that has a fixed contact 21; a movable piece 3 that has a movable contact 31 and that presses the movable contact 31 against the fixed contact 21 to be brought into contact with each other; a thermally actuated element 4 that deforms, due to temperature change, from a curved first shape to a reversely-curved second shape to thereby actuate the movable piece 3 so as to separate the movable contact 31 from the fixed contact 21; a case 6 that has an accommodation part 60 in which the fixed piece 2, the movable piece 3, and the thermally actuated element 4 are accommodated; and a return switch 5 that physically returns the thermally actuated element 4 from the second shape to the first shape. The return switch 5 has a plurality of protrusions 52 that protrude toward the thermally actuated element 4.
A breaker 1 comprises: a stationary piece 2 that has a stationary contact 21; a movable piece 4 having an elastic portion 43 that is formed in a plate shape and is capable of elastic deformation, and a movable contact 41 on one end portion of the elastic portion 43, the movable piece 4 pressing the movable contact 41 against the stationary contact 21 to make contact therewith; and a thermally responsive element 5 that deforms in accordance with a temperature change, thereby causing a transition of the movable piece 4 from a conduction state in which the movable contact 41 is in contact with the stationary contact 21 to an interruption state in which the movable contact 41 is separated from the stationary contact 21. The movable piece 4 has, in the thickness direction thereof, a thin portion 45 that is recessed in a direction opposite that of the thermally responsive element 5.
A breaker 1 comprises: a fixed piece 2 that has a fixed contact 21; a movable piece 4 that has an elastic section 43 and a movable contact 41 and that presses the movable contact 41 into contact with the fixed contact 21; a thermally-actuated element 5 that, by deforming in association with a change in temperature, shifts the movable piece 4 from a conduction state to a cut-off state; a PTC thermistor 6 that electrically connects the fixed piece 2 and the movable piece 4 via the thermally-actuated element 5; a case body 7 that has a first housing part 73; and a lid member 8 that is mounted to the case body 7. The lid member 8 communicates with the first housing part 73, has a second housing part for housing the thermally-actuated element 5 when deformed, and has a protrusion that protrudes from the inner top surface of the second housing part toward the thermally-actuated element 5.
The breaker comprises a fixed piece, a movable piece, a thermally-actuated element and a resin case. The fixed piece has an embedded portion embedded in the resin case in a region that overlaps with the thermally-actuated element in a plan view viewed in the thickness direction. The resin case has: an outer peripheral portion formed on the outer perimeter of a recessed portion; a first penetrating portion penetrating the recessed portion to expose the embedded portion to the thermally-actuated element side; an island portion interposed between the fixed piece and the thermally-actuated element in the inside of the first through portion; and a connecting portion connecting between the outer peripheral portion and the island portion.
A breaker 1 comprises: a fixed piece 2 having a fixed contact 21; a movable piece 4 having an elastic part 44 and a movable contact 41; a thermoresponsive element 5 that deforms in conjunction with a change in temperature; and a PTC thermistor 6. The movable piece 4 includes: a body 45 constituting the elastic part 44; and first protrusions 46 protruding from the body 45 toward the thermoresponsive element 5. The first protrusions 46 overlap the PTC thermistor 6 in a plan view.
[Problem] To provide a breaker which can be used in a high-capacity secondary battery pack, which has high heat detection sensitivity, and which can be disposed without taking up space. [Solution] A breaker 1 comprises: a fixed piece 2 which has a fixed contact 21; a movable piece 3 which has a movable contact 31 and which presses the movable contact 31 to bring the movable contact 31 into contact with the fixed contact 21; a heat reactive element 4 which deforms in accordance with a temperature change and thereby actuates the movable piece 3 so that the movable contact 31 separates from the fixed contact 21; a case 6 in which the heat reactive element 4 is held; and a plate-like tab 8 which is electrically connected to the fixed piece 2 or the movable piece 3. The tab 6 has a protrusion part 81 which protrudes more outward than the case in a plan view and which is welded to the surface of the fixed piece 2 that is on the opposite side from the surface on which the fixed contact 21 is provided.
A current interruption device 100 comprises a plurality of breakers 1 having different operation temperatures connected in parallel with each other. The breakers 1 comprise: a fixed piece 2 having a fixed contact 21; a movable piece 4 that includes an elastic portion 44 capable of elastic deformation and a movable contact 41, and that presses the movable contact 41 onto the fixed contact 21 to establish a contact therebetween; and a thermally responsive element 5 that deforms in accordance with a temperature change, to thereby cause transition of the state of the movable piece 4 from a conduction state in which the movable contact 41 is in contact with the fixed contact 21 to an interruption state in which the movable contact 41 is separated from the fixed contact 21.
H01H 37/54 - Éléments thermosensibles actionnés par la déviation d'un bilame le bilame exerçant par inhérence une action brusque
H02H 5/04 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions non électriques normales de travail avec ou sans reconnexion sensibles à une température anormale
H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
H02J 1/00 - Circuits pour réseaux principaux ou de distribution, à courant continu
11.
Breaker and safety circuit equipped with the same, and secondary battery pack
A breaker comprises: a first terminal piece on which a fixed contact is formed; a movable piece having a movable contact, for pressing the movable contact against the fixed contact so as to contact therewith; a thermally-actuated element deforming with a change in temperature and moving the movable piece so that the movable contact is separated from the fixed contact, and a second terminal piece electrically connected to the movable piece. The movable piece is provided, within a contact portion contacting with the second terminal piece, with a protrusion projecting toward the thermally-actuated element.
An electric circuit 100 includes a power line 13 to supply electric power from a power source 11 to a load 12, and a monitor line 14 electrically independent from the power line 13 to detect temperature of the heat source. The monitor line 14 has a breaker 1 connected thereon in series. The breaker 1 includes a fixed contact, a movable piece having a movable contact and pressing the movable contact so as to contact the fixed contact, and a thermally actuated element deforming with temperature changes to actuate the movable piece so that the movable contact is spaced apart from the fixed contact.
H02H 5/04 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions non électriques normales de travail avec ou sans reconnexion sensibles à une température anormale
13.
BREAKER, SAFETY CIRCUIT, AND SECONDARY BATTERY PACK
This breaker 1 comprises: a fixed contact 21; a movable piece 4 having a movable contact 41; a thermal stress moving element 5 that deforms in association with a change in temperature; a case body 7 in which is formed an accommodating recess 73 for accommodating the fixed contact 21 and the thermal stress moving element 5; and a lid member 8 integrated with the movable piece 4, the lid member 8 being fixed to the case body 7 and covering the accommodating recess 73. The movable piece 4 has a terminal 42 that protrudes to the outer side of the lid member 8 and is connected to an external circuit, and a securing part 43 that is buried in and secured to the lid member 8 between an elastic part 44 and the terminal 42. The lid member 8 has a projection 81 that protrudes toward the case body 7 in order to bury the securing part 43. The case body 7 has a welded part 74 that is welded to the projection 81, and a protruding part 75 that protrudes toward the lid member 8 between the accommodating recess 73 and the welded part 74.
This breaker comprises: a fixed contact; a movable piece 4 including a resilient portion 44 and a movable contact 41 at one end 44e of the resilient portion 44; a heat-responsive element that deforms in conjunction with a change in temperature; a case main body in which is formed an accommodating recessed portion for accommodating the fixed contact, the movable piece 4, and the heat-responsive element; and a lid member 8 which is integrated with the movable piece 4, is affixed to the case main body, and covers the accommodating recessed portion. The lid member 8 has an affixing surface 82 which is affixed to the case main body, the resilient portion 44 protrudes from the affixing surface 82 by a first protrusion amount P1 toward the case main body, and the lid member 8 includes protruding portions 84 which project from the affixing surface 82 by a second protrusion amount P2, greater than the first protrusion amount P1, toward the case main body.
A breaker 1 comprises: a fixed contact 21; a movable piece 4 that has an elastically deformable elastic part 44 and a movable contact 41 at one end part of the elastic part 44, and presses the movable contact 41 against the fixed contact 21 to bring the movable contact into contact with the fixed contact; a thermally-actuated element 5 that, by deforming with temperature change, shifts the movable piece 4 from a conduction state in which the movable contact 41 is in contact with the fixed contact 21 to a cut-off state in which the movable contact 41 is separate from the fixed contact 21; a case body 7 that has a housing recessed part 73 for housing the fixed contact 21, the movable piece 4, and the thermally-actuated element 5; and a lid member 8 that is fastened to the case body 7 and covers the housing recessed part 73. The lid member 8 has a burying part in which a portion of the movable piece 4 is buried, and a first recessed part recessed in the thickness direction of the lid member 8, and the case body 7 has a first protruding part that is fitted into the first recessed part.
A breaker is provided with a first terminal piece on which a fixed contact is formed, a movable piece with a movable contact for pressing the movable contact against the fixed contact so as to contact therewith, a thermally-actuated element deforming with a change in temperature and moving the movable piece so that the movable contact is separated from the fixed contact, and a second terminal piece electrically connected to the movable piece. The movable contact includes a first movable contact and a second movable contact arranged at a first end portion and a second end portion, respectively, of the movable piece in its longitudinal direction. The fixed contact includes a first fixed contact arranged at a position with which the first movable contact can contact, and a second fixed contact arranged at a position with which the second movable contact can contact.
[Problem] The present invention addresses the problem of ensuring the current capacity during discharge of a secondary battery pack, while having a temperature protection element connected to a secondary battery cell. [Solution] The present invention provides a secondary battery pack 1 which is provided with: a secondary battery cell 2; a connection circuit that is connected to a positive electrode terminal or a negative electrode terminal of the secondary battery cell 2; and a temperature protection element 10 that is provided on the secondary battery cell 2 and interrupts electric current in response to changes in the temperature. The connection circuit comprises a switch means which applies electric current to the temperature protection element 10 during charge of the secondary battery pack, and which reduces the electric current to be applied to the temperature protection element 10 during discharge of the secondary battery pack.
H01M 10/48 - Accumulateurs combinés à des dispositions pour mesurer, tester ou indiquer l'état des éléments, p. ex. le niveau ou la densité de l'électrolyte
H01M 50/204 - Bâtis, modules ou blocs de multiples batteries ou de multiples cellules
H01M 50/284 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports comprenant l’insertion de cartes de circuits, p. ex. de cartes de circuits imprimés
H01M 50/519 - Interconnecteurs pour connecter les bornes des batteries adjacentesInterconnecteurs pour connecter les cellules en dehors d'un boîtier de batterie comprenant des circuits imprimés
H02H 7/18 - Circuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour pilesCircuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour accumulateurs
H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
18.
BREAKER, SAFETY CIRCUIT, AND SECONDARY BATTERY PACK
A breaker 1 comprises a fixed piece 2, a movable piece 4, a heat-responsive element 5, and a resin case 10. The fixed piece 2 has an embedded portion 25 that is embedded in the resin case 10 in a region which overlaps the heat-responsive element 5 in plan view seen from the thickness direction of the fixed piece 2. The resin case 10 comprises: an outer peripheral portion 74 that is formed on the outer periphery of a recess 73; a first through portion 75 that passes through the recess 73 and that exposes the embedded portion 25 to the side of the heat-responsive element 5; an island portion 76 that is inward of the first through portion 75 and that is interposed between the fixed piece 2 and the heat-responsive element 5; and a connection portion 77 that connects the outer peripheral portion 74 and the island portion 76.
[Problem] To ensure ampacity during discharge in a state where a temperature protection element is connected to a secondary battery cell, in a secondary battery pack. [Solution] A secondary battery pack 1 comprises: secondary battery cells 2; a connection circuit (support member 3, sub-substrate 4) connected to a positive electrode terminal or a negative electrode terminal of each of the secondary battery cells 2; and temperature protection elements 10 that are provided to the respective secondary battery cells 2 and that interrupt current in response to temperature change. The connection circuit energizes the temperature protection elements 10 during charging, and does not energize the temperature protection elements 10 during discharging.
H02H 7/18 - Circuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour pilesCircuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour accumulateurs
H01H 9/54 - Circuits non adaptés à une application particulière du dispositif de commutation non prévus ailleurs
H01M 10/48 - Accumulateurs combinés à des dispositions pour mesurer, tester ou indiquer l'état des éléments, p. ex. le niveau ou la densité de l'électrolyte
H01M 50/202 - Boîtiers ou cadres autour du boîtier primaire d’une seule cellule ou d’une seule batterie
H01M 50/284 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports comprenant l’insertion de cartes de circuits, p. ex. de cartes de circuits imprimés
H01M 50/519 - Interconnecteurs pour connecter les bornes des batteries adjacentesInterconnecteurs pour connecter les cellules en dehors d'un boîtier de batterie comprenant des circuits imprimés
H01M 50/581 - Dispositifs ou dispositions pour l’interruption du courant en réponse à la température
H02H 5/04 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions non électriques normales de travail avec ou sans reconnexion sensibles à une température anormale
H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
20.
BREAKER, SAFETY CIRCUIT, AND SECONDARY BATTERY PACK
A breaker 1 of the present invention comprises: a fixed piece 2 having a fixed contact 21; a movable piece 4 having a movable contact 41; a heat sensitive element 5 that deforms following a change in temperature to move the movable piece 4 to a cutoff state from a conduction state; a PTC thermistor 6 that establishes conduction between the fixed piece 2 and the movable piece 4 when the movable piece 4 is in the cutoff state; and a case 10 that accommodates the fixed piece 2, the movable piece 4, and the heat sensitive element 5. The heat sensitive element 5 is disposed between the movable piece 4 and the PTC thermistor 6. The case 10 has a bottom surface 72. When the side of the movable contact 41 is made to be the front side in the longitudinal direction of the movable piece 4, the PTC thermistor 6 is accommodated in the case 10 in a backward leaning orientation with respect to the bottom surface 72.
H01H 37/54 - Éléments thermosensibles actionnés par la déviation d'un bilame le bilame exerçant par inhérence une action brusque
H02H 5/04 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions non électriques normales de travail avec ou sans reconnexion sensibles à une température anormale
H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
H01M 50/581 - Dispositifs ou dispositions pour l’interruption du courant en réponse à la température
21.
HEAT-RESPONSIVE SWITCH ELEMENT, AND ELECTRIC CIRCUIT
A heat-responsive switch element 1 is provided with: a fixed contact 21; a movable piece 4 which presses a movable contact 41 into contact with the fixed contact 21; and a heat-responsive element 5 which causes the movable piece 41 to deform elastically to move the movable contact 41 away from the fixed contact 21, and which deforms in response to a change in temperature, thereby causing the movable piece 4 to operate in such a way that the movable contact 41 comes into contact with the fixed contact 21. The heat-responsive element 5 includes a first layer 51 having a first coefficient of thermal expansion, and a second layer 52 having a second coefficient of thermal expansion higher than the first coefficient of thermal expansion. The first layer 51 is arranged on the fixed contact 21 side and the second layer 52 is arranged on the movable contact 4 side in the thickness direction of the heat-responsive element 5.
A breaker 1 comprises: a first terminal piece 2 on which a fixed contact 21 is formed; a movable piece 4 that has a movable contact 41 and presses the movable contact 41 against the fixed contact 21 to bring the two into contact with each other; a heat-responsive element 5 that is deformed with a temperature change, thereby operating the movable piece 4 so that the movable contact 41 is separated from the fixed contact 21; and a second terminal piece 3 that is electrically connected to the movable piece 4, wherein the movable piece 4 has a protrusion 44a protruding toward the heat-responsive element 5 inside a contact region 45 in contact with the second terminal piece 3.
This secondary battery pack 100 comprises: a positive electrode piece 102 protruding from a power storage cell 101; a breaker 1 having a terminal piece 2; and a lead piece 103 connected to the positive electrode piece 102 and the terminal piece 2. The lead piece 103 has a contact region 103a making contact with the positive electrode piece 102. The terminal piece 2 includes a first portion 26 making contact with the lead piece 103 and a second portion 27 for exposing the lead piece 103 in a region overlapping the contact region 103a when viewed in a plan view in the thickness direction of the lead piece 103.
H01M 50/296 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports caractérisés par les bornes des blocs de batterie
H01M 50/569 - Détails de construction des connexions conductrices de courant pour détecter les conditions à l'intérieur des cellules ou des batteries, p. ex. détails des bornes de détection de tension
H01M 50/581 - Dispositifs ou dispositions pour l’interruption du courant en réponse à la température
H01M 50/583 - Dispositifs ou dispositions pour l’interruption du courant en réponse au courant, p. ex. fusibles
An electric circuit 100 includes: a power line 13 for supplying electric power from a power source 11 to a load 12; and a monitor line 14 which is electrically independent of the power line 13, for detecting the temperature of a heat source. Breakers 1, each provided with a fixed contact, a movable piece which includes a movable contact and which presses the movable contact into contact with the fixed contact, and a heat-responsive element which deforms in response to a change in temperature, thereby causing the movable piece to operate in such a way that the movable contact separates from the fixed contact, are connected in series in the monitor line 14.
H01H 37/54 - Éléments thermosensibles actionnés par la déviation d'un bilame le bilame exerçant par inhérence une action brusque
H02H 3/00 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion
H02H 3/093 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à une surcharge avec des moyens de temporisation
H02H 3/10 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à une surcharge sensibles de plus à quelque autre condition électrique anormale
H02H 3/20 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à un excès de tension
H02H 5/04 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions non électriques normales de travail avec ou sans reconnexion sensibles à une température anormale
H02J 1/00 - Circuits pour réseaux principaux ou de distribution, à courant continu
25.
Current breaker, safety circuit and secondary battery pack
A current cut-off device includes a plate-shaped terminal piece having a contact, a movable piece including an elastic portion formed in a plate shape so as to be elastically deformed and a movable contact arranged at one end portion of the elastic portion and having the movable contact so as to be pressed against and in contact with the contact, and a thermally actuated element which biases the movable piece by deforming in accordance with a temperature change and causes a state of the movable piece to be shifted from a conductive state in which the movable contact is in contact with the contact to a cut-off state in which the movable contact is separated from the contact. When the state of the movable piece is shifted from the conductive state to the cut-off state, as the movable contact moves, it gets over the contact.
A breaker includes a fixed piece having a fixed contact, a movable piece having an elastically deformable elastic portion and a movable contact formed at a tip portion of the elastic portion and pushed to contact with the fixed contact, a thermally actuated element deformable according to a temperature change to shift the state of the movable piece from a conductive state to a cut-off state, and a case accommodating the fixed piece, the movable piece, and the thermally actuated element. The movable piece is cantilevered by the case on a base end portion side of the elastic portion, the elastic portion includes a first narrow portion having a smaller width dimension in a short direction perpendicular to a longitudinal direction of the elastic portion than the base end portion, and the first narrow portion has an arc-shaped contour in plan view from a thickness direction of the elastic portion.
The breaker is provided with a fixed contact, a movable piece having an elastic portion and a movable contact, a thermally-actuated element deforming with a change in the temperature so as to shift the movable piece from a conduction state to a cut-off state, a case main body housing the movable piece and the thermally-actuated element, a lid member attached to the case main body, and a plate-shaped cover piece embedded in the lid member. The case main body is provided with a first fixing surface fixed to the lid member, and the lid member is provided with a second fixing surface fixed to the case main body. The second fixing surface is provided with a protruding portion protruding toward the first fixing surface, and the protruding portion and the cover piece are overlapped with each other in the plan view as viewed in the thickness direction of the cover piece.
A breaker 1 comprises: a first terminal piece 2 on which a fixed contact 21 is formed; a movable piece 4 having a movable contact 41, in which the movable contact 41 is pressed to contact the fixed contact 21; a thermally reactive element 5 that deforms in association with a temperature change, thereby operating the movable piece 4 so that the movable contact 41 separates from the fixed contact 21; and a second terminal piece 3 electrically connected to the movable piece 4. The movable contact 41 includes a first movable contact 41a arranged at a first longitudinal-direction end part 40a of the movable piece 4, and a second movable contact 41b arranged at a second longitudinal-direction end part 40b of the movable piece 4. The fixed contact 21 includes a first fixed contact 21a arranged at a position that can be contacted by the first movable contact 41a, and a second fixed contact 21b arranged at a position that can be contacted by the second movable contact 41b.
Provided is a breaker capable of further downsizing without impairing rigidity and strength of a case. The breaker 1 comprises a fixed contact 21, a movable piece 4 having and pressing a movable contact 41 to the fixed contact 21, a thermally responsive element 5 for moving the movable piece 4 to separate the movable contact 41 from the fixed contact 21 by deformation thereof responding to temperature change, a case for containing the fixed piece 21, the movable piece 4 and the thermally responsive element 5, and a cover piece 8 attached on the case 7. The case 7 has an end face 72 on which the cover piece 8 is disposed, a containing recess 73 caved from the end face 72 and forming a space to which the movable piece 4 and the thermally responsive element 5 are contained, and a first protrusion protruding from the end face 72 and to which the cover piece 8 is fitted.
A breaker has a fixed contact, a movable piece which has an elastic portion formed in a plate shape and being elastically deformable, and a movable contact in one end portion of the elastic portion so as to press the movable contact against the fixed contact, a thermally-actuated element which is deformed in accordance with a temperature change and shifts from a conduction state in which the movable contact contacts with the fixed contact to a shut-off state in which the movable contact separates from the fixed contact, and a case which accommodates the fixed contact, the movable piece, and the thermally-actuated element. The case has a side wall extending in a long direction of the movable piece, and the side wall is provided, in an adjacent portion to the thermally-actuated element, with a convex portion protruding toward the outside of the case.
H01H 37/54 - Éléments thermosensibles actionnés par la déviation d'un bilame le bilame exerçant par inhérence une action brusque
H01H 1/50 - Moyens pour accroître la pression de contact, empêcher la vibration des contacts, maintenir ensemble les contacts après l'entrée en contact, ou pour ramener les contacts à la position d'ouverture
A breaker 1 comprises: a sheet-shaped first terminal tab 2 having a first connection face 22a and a stationary contact 21; a movable tab that presses a movable contact against the stationary contact 21 to create contact; a heat-responsive element 5 that deforms with changes in temperature to actuate the movable tab so that the movable contact separates from the stationary contact 21; and a case 10 for housing the stationary contact 21, the movable tab, and the heat-responsive element. The breaker 1 further comprises a heat-detecting part 28 that detects heat on the exterior of the case 10 and conducts the heat to the heat-responsive element. The heat-detecting part 28 has a detection face 28a on a side in a first direction D1 facing the heat-responsive element with respect to the movable tab. The first terminal tab 2 has a first bent part 26 such that the first connection face 22a is positioned further in a second direction D2, opposite the first direction D1, than the stationary contact 21.
A circuit protection element includes a first leg part formed by being bent once from a first end part of a ceiling part that is the bending reference plane; a second leg part formed by being bent once with respect to the bending reference plane; a first mounting part and a second mounting part each formed by being bent twice with respect to the bending reference plane so as to be flush mutually and parallel to a mounting surface of the circuit board; and a plastic deformation part (a curved part) set in a predetermined region of the second leg part and plastically deformed by applying a load in the vicinity of a second end part of the ceiling part toward the mounting surface of the circuit board.
H01H 37/76 - Élément de contact actionné par fusion d'une matière fusible, actionné par combustion d'une matière combustible ou par explosion d'une matière explosive
A breaker 1 comprises: a fixed piece 2 having a fixed contact 21; a movable piece 4 having a movable contact 41, the movable piece 4 pressing the movable contact 41 to the fixed contact 21 to make contact; a thermally actuated element 5 that deforms with variations in temperature, whereby the movable piece 4 is caused to transition from a conduction state in which the movable contact 41 contacts the fixed contact 21 to an interruption state in which the movable contact 41 is separated from the fixed contact 21; and a case 10 that accommodates the fixed piece 2, the movable piece 4, and the thermally actuated element 5. The case 10 includes a resin material and a fill material filling the resin material, and the surface roughness Rz of the fixed contact 21, pursuant to JIS B0601, is greater than the short-direction length of the fill material.
This insert molding method is for molding an article in which a portion of a metal piece is embedded in a resin case, the article being molded by filling a molding space defined by a first mold and a second mold with a resin material. The insert molding method includes: a recess forming step S2 in which a recess is formed in a side surface of the metal piece, the recess being depressed from the side surface; a loading step S3 in which the metal piece is loaded into the first mold such that the recess is positioned outside the molding space; a mold closing step S4 in which the first mold or the second mold is moved in a direction within the plane of the side surface to pinch the metal piece between the first mold and the second mold; and a molding step S5 in which the resin case is molded by filling the molding space enclosed by the first mold and the second mold with the resin material and allowing the resin material to cure.
B29C 45/14 - Moulage par injection, c.-à-d. en forçant un volume déterminé de matière à mouler par une buse d'injection dans un moule ferméAppareils à cet effet en incorporant des parties ou des couches préformées, p. ex. moulage par injection autour d'inserts ou sur des objets à recouvrir
A breaker comprises: a fixed piece having a fixed contact; a movable piece having a movable contact and pressing the movable contact against the fixed contact to contact therewith; a thermally-actuated element for shifting the movable piece from a conduction state in which the movable contact contacts with the fixed contact to a turn-off state; a PCT thermistor; and a resin case. The fixed piece has a contacting portion contacting with the PCT thermistor. The resin case has a bottom surface provided with a concave portion. In a planar view when the fixed piece is viewed from the PCT thermistor, the contacting portion is disposed within the concave portion. The concave portion has a bottom recessed from the bottom surface of the resin case to prevent the bottom from protruding outwardly from the bottom surface when the thermally-actuated element is deformed.
This method for manufacturing a breaker includes: a first step for placing a fixed contact and a thermal response element inside a case body; a second step for integrating a movable piece 4 and a terminal piece 3 to form a composite piece 9; a third step for placing the composite piece 9 inside the case body; and a fourth step for sandwiching and fixing the composite piece 9 using the case body and a lid member.
A secondary battery circuit (100) comprises: a secondary battery pack (110) which has cells (111); a feeding unit (121) which feeds power to the secondary battery pack (110), or a load (122) to which the secondary battery pack (110) feeds power; and a power line (130) which connects the secondary battery pack (110) to the feeding unit (121) or the load (122) in series. The secondary battery circuit (100) is provided with a first current interruption device (140) that is connected in series to the power line (130) and interrupts current in the power line (130), and a second current interruption device (112) that interrupts an output current from the cells (111) when the temperature of the cells (111) increases.
B60L 3/04 - Coupure de l'alimentation en énergie en cas de fausse manœuvre
B60L 50/40 - Propulsion électrique par source d'énergie intérieure au véhicule utilisant de la puissance de propulsion fournie par des condensateurs
B60L 50/50 - Propulsion électrique par source d'énergie intérieure au véhicule utilisant de la puissance de propulsion fournie par des batteries ou des piles à combustible
B60L 53/00 - Procédés de chargement de batteries spécialement adaptées aux véhicules électriquesStations de charge ou équipements de charge embarqués pour ces batteriesÉchange d'éléments d’emmagasinage d'énergie dans les véhicules électriques
B60L 55/00 - Dispositions relatives à la fourniture d'énergie emmagasinée dans un véhicule à un réseau électrique, c.-à-d. du véhicule au réseau [V2G]
B60L 58/00 - Procédés ou agencements de circuits pour surveiller ou commander des batteries ou des piles à combustible, spécialement adaptés pour des véhicules électriques
H02H 7/18 - Circuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour pilesCircuits de protection de sécurité spécialement adaptés aux machines ou aux appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou de ligne, et effectuant une commutation automatique dans le cas d'un changement indésirable des conditions normales de travail pour accumulateurs
H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
39.
THERMAL REACTION ELEMENT, BREAKER, SAFETY CIRCUIT, AND SECONDARY BATTERY PACK
This thermal reaction element 5 is formed in a curved plate shape. The thermal reaction element 5 includes: a first region 51 that deforms with a snap action accompanying a temperature change; and a second region 52 that is integrally formed from the first region 51, and that inhibits deformation of the first region 51. The second region 52 is formed on the inside of the circumscribed circle of the first region 51.
A plate-like thermally-actuated element 5 is formed in a shape of a rectangle, in a plan view seen from the thickness direction, having long sides 51 extending in a lengthwise direction D1 and having short sides 52 extending in a width direction D2 perpendicular to the lengthwise direction D1. A wide section 54 at which the width dimension is widened is provided at the central portion 53 in the lengthwise direction D1, and thus the width dimension increases gradually toward the central portion 53.
A breaker 1 includes a fixed piece 2 having a fixed contact 21, a movable piece 4 including a movable contact 41 and having the movable contact 41 so as to be pressed against and in contact with the fixed contact 21, a thermally actuated element 5 shifting the movable piece 4 from a conductive state to a cut-off state in accordance with a temperature change, and a case 7 accommodating the fixed piece 2, the movable piece 4, and the thermally actuated element 5. The case 7 includes a case main body 71 accommodating the movable piece 4 and the thermally actuated element 5, a lid member 81 covering a housing concave portion 73 of the case main body 71, and a metal plate 9 embedded in the lid member 81. Heat capacity of the metal plate 9 is larger than heat capacity of the fixed piece 2.
A second battery circuit 500 including: a secondary battery 501 having a power storage cell 510 and a pair of electrodes exposed outside the power storage cell 510; a load 502 driven by the secondary battery 501; and a breaker 1 connected in series between the secondary battery 501 and the load 502. The breaker 1 comprises: a terminal 22 serially connected to a positive electrode 511 in the secondary battery 501; a fixed contact 21; a movable piece 4 having an elastic section 44 that elastically deforms and a movable contact 41 on one end of the elastic section 44, said movable piece 4 pressing the movable contact 41 against the fixed contact 21 to make contact therewith; a thermally responsive element 5 that, by deforming in conjunction with temperature change, moves the movable piece 4 from a conductive state in which the movable contact 41 makes contact with the fixed contact 21 to a disconnected state in which the movable contact 41 separates from the fixed contact 21; and a case 10 for housing the fixed contact 21, the movable piece 4, and the thermally responsive element 5, in a state in which the terminal 22 is exposed. The positive electrode 511 and the terminal 22 are laser welded.
A breaker 1 that is used in a DC circuit 500 including a secondary battery 501 and a load 502. The breaker 1 comprises: a terminal 22 directly laser-welded to a positive electrode 511 in the secondary battery 501; a fixed piece 2 having a fixed contact 21; a movable piece 4 having an elastic section 44 that elastically deforms and a movable contact 41 on one end of the elastic section 44, said movable piece 4 pressing the movable contact 41 against the fixed contact 21 to make contact therewith; a thermally responsive element 5 that, by deforming in conjunction with temperature change, moves the movable piece 4 from a conductive state in which the movable contact 41 makes contact with the fixed contact 21 to a disconnected state in which the movable contact 41 separates form the fixed contact 21; and a case 10 for housing the fixed piece 2, the movable piece 4, and the thermally responsive element 5, in a state in which the terminal 22 is exposed. A plating layer 25, that absorbs laser light and melts, is formed on a surface 22a upon which the laser light used in laser welding of the terminal 22 is irradiated.
The breaker 1 is provided with: a fixed contact 21; a movable piece 4 having an elastic part 43 and a movable contact 41; a thermally-sensitive element 5 which deforms when subjected to a change in temperature so as to cause the state of the movable piece 4 to transition from a conductive state to a disconnected state; a case body 7 housing the movable piece 4 and the thermally-sensitive element 5; a lid member 8 attached to the case body 7; and a plate-like cover piece 9 embedded in the lid member 8. A first fixation surface 75 to be fixed to the lid member 8 is formed on the case body 7, and a second fixation surface 85 to be fixed to the case body 7 is formed on the lid member 8. A projection part 86 projecting toward the first fixation surface 75 is formed on the second fixation surface 85, and in a plan view as seen from the thickness direction of the cover piece 9, the projection part 86 and the cover piece 9 overlap with each other.
The breaker 1 is provided with: a fixed contact 21; a movable piece 4 having an elastic part 44, which is formed in a plate-like shape and which elastically deforms, and a movable contact 41 disposed at a tip of the elastic part 44, whereby the movable contact 41 is pressed against the fixed contact 21 to establish contact therebetween; a thermally-actuated element 5 which deforms in response to a change in temperature so as to cause the state of the movable piece 4 to transition from a conductive state to a disconnected state; a case body 7 for housing the fixed contact 21, the movable piece 4, and the thermally-actuated element 5; and a cover member 8 attached to the case body 7 so as to at least partly cover the movable piece 4 and the thermally-actuated element 5. A retreat part 82, which retreats in a direction away from the fixed contact 21, is locally formed in an inner surface 81 of the cover member 8 facing the movable piece 4 side and in a region facing the fixed contact 21 via the movable piece 4.
This current interrupter 1 comprises: a plate-shaped terminal strip 2 having a contact 21; a moving strip 4 having a plate-shaped, elastically deformable elastic section 44 and a moving contact 41 located at one end of the elastic section 44, the moving strip 4 being configured such that the moving contact 41 is brought into contact with the contact by being pressed against same; and a thermally responsive element 5 that deforms in response to a temperature change so as to bias the moving strip 4 such that the state of the moving strip 4 shifts from a conduction state in which the moving contact 41 is in contact with the contact 21 to a cut-off state in which the moving contact 41 is away from the contact 21. When the state of the moving contact 4 shifts from the conduction state to the cut-off state, the moving contact 41 moves while passing beyond the contact 21.
According to the present invention, a first terminal piece 2 has a first connection part 23 which is electrically connected to a PTC thermistor 6, while a second terminal piece 3 has a second connection part 33 which is electrically connected to the PTC thermistor 6. The PTC thermistor 6 has a first surface 61 which faces a thermally actuated element 5 and a second surface 62 which does not face the thermally actuated element 5. The first connection part 23 and the second connection part 33 are connected to the PTC thermistor 6 at the second surface 62.
A breaker 1 comprises: a fixed piece 2 having a fixed contact 21; a movable piece 4 that has an elastically deformable elastic portion 44 and a movable contact 41 at the leading end part of the elastic portion 44, and presses the movable contact 41 to come in contact with the fixed contact 21; a thermally responsive element 5 that deforms with a change in temperature to thereby transition the movable piece 4 from the conduction state to the cutoff state; and a case 10 that stores the fixed piece 2, the movable piece 4, and the thermally responsive element 5. The movable piece 4 is cantilevered by the case 10 near the base end part 44s of the elastic portion 44. The elastic portion 44 includes a first narrow width portion 45 that has a smaller width W than the base end part 44s in the transverse direction D1 perpendicular to the longitudinal direction D1 of the elastic portion 44. The first narrow width portion 45 has an arc-shaped contour 46 in plan view as seen along the thickness direction of the elastic portion 44.
This breaker 1 is provided with: a fixed contact 21; a movable piece 4 which includes a plate-shaped and elastically deformable elastic portion 43 and a movable contact 41 disposed at one end of the elastic portion 43, and which presses the movable contact 41 into contact with the fixed contact 21; a heat-sensitive element 5 which, by deforming in accordance with a temperature change, causes the movable piece 4 to transition from a conducting state in which the movable contact 41 is in contact with the fixed contact 21 to a shutdown state in which the movable contact 41 is spaced apart from the fixed contact 21; and a case 10 in which the fixed contact 21, the movable piece 4, and the heat-sensitive element 5 are housed. The case 10 includes a side wall 11 extending in a longitudinal direction D1 of the movable piece 4. The side wall 11 includes a protrusion 14 disposed at the periphery of the heat-sensitive element 5 and protruding outside the case 10.
H01H 37/76 - Élément de contact actionné par fusion d'une matière fusible, actionné par combustion d'une matière combustible ou par explosion d'une matière explosive
This circuit protection element is formed by bending a metal plate, wherein a plurality of mounted parts mounted on a circuit board are bent twice with respect to a reference plane and thereby formed flat. The circuit protection element is provided with: a first leg part 12 formed by being bent once from a first end section 11a of a ceiling part 11 that is a bending reference plane; a first mounted part 14 formed by being bent twice with respect to the bending reference plane so as to be parallel to a mounting surface of a circuit board; a second leg part 13 formed by being bent once with respect to the bending reference plane; a second mounted part 15 formed by being bent twice with respect to the bending reference plane so as to be parallel to the mounting surface of the circuit board; and a plastic deformation part (a curved part) 13b which is set in a predetermined region of the second leg part 13 and plastically deformed by applying a load, in the vicinity of a second end section 11b of the ceiling part 11, toward the mounting surface of the circuit board.
H01H 37/76 - Élément de contact actionné par fusion d'une matière fusible, actionné par combustion d'une matière combustible ou par explosion d'une matière explosive
A breaker 1 has: a fixed piece 2 having a fixed contact 20; a movable piece 4 having a movable contact 41, the movable piece 4 pressing the movable contact 41 against the fixed contact 20 and causing the movable contact 41 to contact the fixed contact 20; a thermally actuated element 5 that deforms along with changes in temperature, causing the movable piece 4 to transition from a continuity state in which the movable contact 41 contacts the fixed contact 20 to a cutoff state in which the movable contact 41 is separated from the fixed contact 20; a PTC thermistor 6 that establishes conduction between the fixed piece 2 and the movable piece 4 when the movable piece 4 is in the cutoff state; and a resin case 10 that accommodates the fixed piece 2, the movable piece 4, the thermally actuated element 5, and the PTC thermistor 6. The fixed piece 2 has an abutting part 27 that abuts the PTC thermistor 6, and the case 10 has a bottom surface 76, and a concave section 77 that sandwiches the fixed piece 2 from the bottom surface 76 and is recessed toward the PTC thermistor 6. In plan view, viewing the fixed piece 2 from the PTC thermistor 6, the abutting part 27 is arranged on the inner side of the recessed section 77.
A breaker 1 comprises: a fixed contact 21; a movable piece 4 having an elastic part 43 that elastically deforms and a movable contact 41 at one end part of said elastic part 43, the movable contact 41 being pressed so as to contact the fixed contact 21; a thermally reactive element 5 that operates the movable piece 4 so that the movable contact 41 separates from the fixed contact 21 by deforming according to a temperature change; a case 10 that accommodates the movable piece 4 and the thermally reactive element 5; and a terminal piece 2 or 3 electrically connected to an external circuit. The case 10 has a side wall 11 extending along the longitudinal direction of the elastic part 43. The terminal piece 2 or 3 has a projecting part 27 or 37 projecting outward of the case 10 from the side wall 11. The side wall 11 has a recess 12 or 13 that is depressed inward of the case 10 at the periphery of the projecting part 27 or 37.
A connector 10 is provided with a feed terminal 11A for supplying direct-current power to a connection destination, and a circuit substrate 12 on which the feed terminal 11A is formed. The circuit substrate 12 is fitted with a breaker 1 for interrupting current in accordance with a temperature change, and is further provided with a first cover 13 covering the breaker 1. A heat-insulating space 16 is formed between the breaker 1 and the first cover 13.
H01H 37/54 - Éléments thermosensibles actionnés par la déviation d'un bilame le bilame exerçant par inhérence une action brusque
H01R 13/713 - Association structurelle avec des composants électriques incorporés avec interrupteur incorporé l'interrupteur étant un interrupteur de sécurité
55.
CIRCUIT BREAKER AND SAFETY CIRCUIT PROVIDED WITH SAME
A circuit breaker 1 is provided with: a fixed piece 2 having a fixed contact point 21; a movable piece 4 that has a movable contact point 41 and that presses the movable contact point 41 into contact with the fixed contact point 21; a thermally actuated element 5 for shifting the movable piece 4 from a conductive state to a shut-off state with a temperature change; and a case 7 for accommodating the fixed piece 2, the movable piece 4, and the thermally actuated element 5. The case 7 has: a case body 71 for accommodating the movable piece 4 and the thermally actuated element 5; a lid member 81 for covering an accommodating recessed section 73 of the case body 71; and a metal plate 9 embedded in the lid member 81. The heat capacity of the metal plate 9 is larger than the heat capacity of the fixed piece 2.
A breaker 1 is provided with: a fixed contact 20; a movable piece 4 extending in a first direction D1; a heat-sensitive element 5; a case 7 accommodating the movable piece 4 and the heat-sensitive element 5; and a terminal piece 2 of which a part protrudes from the case 7 and which is electrically connected to an external circuit. The terminal piece 2 comprises: a first portion 21 and a second portion 22 having different heights from the bottom surface of the case 7; a first bend portion 23a bent in a first bend direction; and a second bend portion 23b bent in a second bend direction opposite from the first bend direction. The first bend portion 23a and the second bend portion 23b extend in parallel with the first direction D1.
Provided is a circuit breaker that can be made more compact without a case thereof losing stiffness or strength. A circuit breaker 1 comprises: a fixed contact 21; a moving piece 4 that pushes a moving contact 41 into contact with the fixed contact 21; a heat-responsive element 5 that, by deforming in accordance with temperature change, operates the moving piece 4 such that the moving contact 41 is moved away from the fixed contact 21; a case 7 that houses the fixed contact 21, the moving piece 4, and the heat-responsive element 5; and a cover piece 8 that is mounted to the case 7. The case 7 has an end surface 72 on which the cover piece 8 is placed, a housing recess section 73 that is recessed from the end surface 72 and forms a space in which the moving piece 4 and the heat-responsive element 5 are housed, and a first protrusion section 74 that protrudes from the end section 72 and fits with the cover piece 8.
a) of the upper surface of the thermal actuator element (5) by a distance (D). Thereby, a stable temperature adjustability and a resistance value are ensured in a breaker used as a protection device for a secondary battery with miniturization brought into realty.
A breaker (1) is provided with: a fixed piece (2) which has a fixed contact; a movable piece which has a movable contact at a front end portion and pushes the movable contact against the fixed contact to bring same into contact with each other; a thermally responsive element that deforms in accordance with a change in temperature and thereby actuates the movable piece so that the movable contact separates from the fixed contact; and a case body (71) of a resin case that accommodates the fixed piece (2), the movable piece, and the thermally responsive element. The case body (71) has recess portions (75, 77) which are recessed from a peripheral portion, and the fixed piece (2) has a withdrawal portion (25) that withdraws from the recess portions (75, 77) of the case body (71) by a predetermined first distance (D1) or more, and is embedded in the case body (71).
In a radial optical path type rotary encoder, in order to be able to reduce deterioration of resolution and variation among products due to burrs during molding and/or rounding of a die, a scale for a rotary encoder is provided with a scale body which is formed substantially in a cylindrical shape, the scale body having a side surface portion in which a light transmitting portion through which light passes and a light blocking portion by which light with a predetermined width in a circumferential direction is blocked are formed alternately in the circumferential direction, wherein the side surface on a light-incident side of the light blocking portion is formed outside a light transmittable region having an outer edge defined by a light beam tangent to the side surface of the light blocking portion amidst the light passing through the light transmitting portion, in a lateral cross-section view.
G01D 5/347 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensibleMoyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminéTransducteurs non spécialement adaptés à une variable particulière utilisant des moyens optiques, c.-à-d. utilisant de la lumière infrarouge, visible ou ultraviolette avec atténuation ou obturation complète ou partielle des rayons lumineux les rayons lumineux étant détectés par des cellules photo-électriques en utilisant le déplacement d'échelles de codage
brevets
