An electricity storage device includes an electrode assembly and a load applying mechanism. The load applying mechanism applies, to the electrode assembly, a load in a direction in which the positive electrode and the negative electrode are stacked in the electrode assembly. The negative electrode includes a metal foil and an active material layer that covers at least part of the metal foil and contains a carbon-based material as an active material. The density of the carbon-based material in the active material layer is 1.2 g/cm.sup.3 or higher. The degree of orientation that is defined as a ratio (I(100)/I(002)) of an X-ray diffraction intensity I(100) of a (100) plane to a diffraction intensity I(002) of a (002) plane in the active material layer is lower than or equal to 0.3. The load applied by the load applying mechanism is greater than or equal to 0.22 MPa.

An electronic key includes a housing including a battery housing portion that houses a battery, the battery housing portion being provided in the housing, a battery terminal, arranged within the battery housing portion, that makes contact with one electrode of the battery housed within the battery housing portion, and a board, arranged within the battery housing portion, including a first conductive portion that makes contact with the battery terminal and is electrically connected to the one electrode of the battery via the battery terminal, and a second conductive portion that makes contact with and is electrically connected to another electrode of the battery.

This application relates to a battery module, including a substrate, battery units, end plates, side plates and fastening pieces; the end plates are respectively located on two sides of the battery units in their stacking direction, adjacent to outermost ones of the battery units and extend along a length direction of the battery unit; an end of the end plate in the length direction is curled into a pipe and forms a curling pipe section, an axial direction of the curling pipe section is the same with a height direction of the battery unit; the fastening piece is inserted in the curling pipe section, extends in the curling pipe section toward the substrate and protrudes out of the curling pipe section, and are fixed on the substrate; by configuring curling pipe sections, fastening strength is improved, so as to realize reliable fixation of the battery module on the substrate.

The present disclosure discloses a pack case suitable for preventing vibration or deviation of a battery module on a case during an assembly operation, and a battery pack including the same. The pack case according to the present disclosure includes an align unit and a bus bar disposed at an edge on an inner circumferential surface, and a main case having a connection terminal contacting the bus bar on an outer circumferential surface, and the align unit and the bus bar contact a battery module at a periphery of the battery module seated on the inner circumferential surface of the main case.

A multiplexed battery set includes a plurality of battery units connected in series in such a manner that the battery units are bendable at connection positions, each of which is between each adjacent two of the battery units. Each battery unit includes a plurality of contacts. The battery set further includes a plurality of electrical wires respectively electrically connected between the contacts of each adjacent two battery units to electrically connect the battery units in series. The electrical wires has a length capable for keeping battery units in an electrically connected status when each adjacent two battery units are bent by an external force.

A battery module having a plurality of battery cells electrically connected to each other is disclosed. The battery module includes a plurality of cartridges, each of which includes a frame member, to opposite sides of which battery cells are mounted, each of the cartridges being provided at corners thereof with fastening parts, through which adjacent cartridges are coupled to each other in order to constitute a cartridge assembly, a pair of end plates mounted to opposite side surfaces of the cartridge assembly so as to cover outermost cartridges, and a busbar assembly mounted to one surface of the cartridge assembly, the busbar assembly including busbars for electrical connection between electrode terminals of the battery cells, wherein each of the cartridges is configured such that a cooling fin, with opposite surfaces of which the battery cells are in contact for thermal conduction, is mounted to the middle part of the cartridge, when viewed in vertical section, one end of the cooling fin being exposed outward from the cartridge, and gripping parts for mounting the battery cells in position are formed on the inner surface of the frame member of the cartridge.

A battery mounting structure is provided to prevent water intrusion into a clearance between a battery pack and a floor panel of a vehicle. The battery mounting structure comprises: frame members extending longitudinally on both sides of the vehicle; a floor panel disposed between the frame members; and a battery pack situated underneath the floor panel. A sealing member is interposed between a periphery of the battery pack and a portion extending from a member opposed to the battery pack, and a drain hole is formed in the sealing member to connect an inner side and an outer side of the sealing member.

A method for introducing at least one extinguishing agent into a battery, in particular into a high-voltage battery for a motor vehicle. The at least one extinguishing agent is introduced into a housing of the battery that is at least partially sealed against the penetration of water, in which a plurality of battery cells are arranged. For this purpose, a through-opening is created in a partial region of a wall of the housing, wherein the partial region is penetrated by means of an end region of an extinguishing device. At least one extinguishing agent is introduced into the housing of the battery through a supply channel of the extinguishing device. In addition, the invention relates to an extinguishing device.

A battery mounting structure for maintaining a sufficient passenger compartment in vehicles is provided. The battery mounting structure comprises a pair of longitudinal side sills (11, 12), and a battery pack (7) disposed between the side sills (11, 12). A plurality of battery modules (9) are juxtaposed in a casing (8) of the battery pack (7). A linear depression (39) protrudes downwardly from a reinforcement member (15) situated underneath a floor panel (17) supported by the side sills (11, 12), and the battery pack (7) has a linear depression (38) hold the linear depression (39) therein.

A battery mounting structure to enhance rigidity of a vehicle body without increasing a vehicle weight is provided. The battery mounting structure comprises a pair of frame members extending longitudinally and a battery pack an all-solid battery having a cell stack. The battery pack is disposed between the frame members. The battery pack is connected to the frame member through a connection member.