Abstract: A battery, suitable for forming a battery pack, includes an electrode assembly having a positive electrode plate and a negative electrode plate, and a separator wound or laminated together, core materials of the negative and positive electrode plates being bared respectively at either end. A bottomed cylindrical outer case having a bottom is connected to either end face of the electrode assembly to serve as a battery terminal. Electrolyte is impregnated in the electrode assembly and a lid connected to the other end face of the electrode assembly and fixedly attached to the outer case with a sealer and an insulator interposed therebetween. A connecting part is a part of the lid so that the connecting part engages with and connects to a bottom part of the outer case of another battery.

Abstract: A non-aqueous electrolyte secondary battery, comprises positive and negative electrode plates, each comprising a current collector and a material mixture layer carried on each face thereof. A total thickness of the positive electrode material mixture layers on both faces of the current collector is 40 ?m to 100 ?m. The positive electrode plate has an electrode area of 520 cm2 to 800 cm2 per battery capacity of 1 Ah. The negative electrode material mixture layer comprises a graphitizable carbon material. A wide-range X-ray diffraction pattern of the graphitizable carbon material has a peak PX (101) attributed to a (101) crystal face at about 2?=44 degrees, and a peak PX (100) attributed to a (100) crystal face at about 2?=42 degrees. A ratio of an intensity IX (101) of PX (101) to an intensity IX (100) of PX(100) satisfies: 0<IX (101)/IX (100)<1.

Abstract: In a battery pack (1) that accommodates a plurality of batteries (11) arranged in parallel in a case (2) that forms a cooling-air passage (3), the cooling-air passage (3) and a gas-discharge passage (4) for discharging gas leaking from the battery (11) when the battery (11) falls into abnormal state are formed and separated from each other in the case (2).

Abstract: In a battery having a structure that an electrode plate group, formed by winding a positive electrode plate and a negative electrode plate with a separator interposed therebetween, is housed in a battery case together with an electrolyte solution, the electrode plate group is rolled around a roll core, and both ends of the roll core are supported by the battery case.

Abstract: In a battery pack (1) that accommodates a plurality of batteries (11) arranged in parallel in a case (2) that forms a cooling-air passage (3), the cooling-air passage (3) and a gas-discharge passage (4) for discharging gas leaking from the battery (11) when the battery (11) falls into abnormal state are formed and separated from each other in the case (2).

Abstract: A battery, suitable for forming a battery pack, includes an electrode assembly having a positive electrode plate and a negative electrode plate, and a separator wound or laminated together, core materials of the negative and positive electrode plates being bared respectively at either end. A bottomed cylindrical outer case having a bottom is connected to either end face of the electrode assembly to serve as a battery terminal. Electrolyte is impregnated in the electrode assembly and a lid is connected to the other end face of the electrode assembly and fixedly attached to the outer case with a sealer and an insulator interposed therebetween. A connecting part is a part of the lid so that the connecting part engages with and connects to a bottom part of the outer case of another battery.

Abstract: A non-aqueous electrolyte secondary battery, comprises positive and negative electrode plates, each comprising a current collector and a material mixture layer carried on each face thereof. A total thickness of the positive electrode material mixture layers on both faces of the current collector is 40 &mgr;m to 100 &mgr;m. The positive electrode plate has an electrode area of 520 cm2 to 800 cm2 per battery capacity of 1 Ah. The negative electrode material mixture layer comprises a graphitizable carbon material. A wide-range X-ray diffraction pattern of the graphitizable carbon material has a peak PX (101) attributed to a (101) crystal face at about 2&thgr;=44 degrees, and a peak PX (100) attributed to a (100) crystal face at about 2&thgr;=42 degrees. A ratio of an intensity IX (101) of PX (101) to an intensity IX (100) of PX(100) satisfies: 0<IX (101)/IX (100)<1.

Abstract: A battery power source device is provided for supplying high electric power used for a drive power source for a vehicle. The battery power source device includes a battery box for storing a plurality of batteries arranged in a connected state in a battery storage room, an inlet opening for introducing a temperature control medium into the battery storage room, an outlet opening for discharging the medium from the battery storage room to the outside, a medium circulation passage for leading the medium discharged from the outlet opening to the inlet opening for feeding into the battery storage room again, and a medium transport device for forcing the medium flow.

Abstract: A battery power source device is provided for supplying high electric power used for a drive power source for a vehicle. The battery power source device includes a battery box for storing a plurality of batteries arranged in a connected state in a battery storage room, an inlet opening for introducing a temperature control medium into the battery storage room, an outlet opening for discharging the medium from the battery storage room to the outside, a medium circulation passage for leading the medium discharged from the outlet opening to the inlet opening for feeding into the battery storage room again, and a medium transport device for forcing the medium flow.

Abstract: In a battery having a structure that an electrode plate group, formed by winding a positive electrode plate and a negative electrode plate with a separator interposed therebetween, is housed in a battery case together with an electrolyte solution, the electrode plate group is rolled around a roll core, and both ends of the roll core are supported by the battery case.

Abstract: A collector terminal for a non-aqueous electrolyte secondary battery, especially a large-size battery, is provided which is free from breakage when its exterior terminal is fastened with a nut with an excessive torque, superior in electrical conductivity, and high in reliability. The section of the collector terminal forming an exterior terminal and the section where lead plates taken out from the electrode group consist of different types of metals, which are integrated by solid-phase bonding or by vacuum brazing. Among the solid-phase bonding methods, diffusion bonding, explosion pressure welding, and friction bonding are effective.

Abstract: The present invention relates to a construction of an explosion-proof safety vent for small-size non-aqueous electrolyte batteries such as prismatic lithium-ion secondary batteries or with an oval cross section hence with a small area of seal plate, and to a method of producing a seal plate. It aims at securing safety of a battery by allowing an explosion-proof vent to operate without fail with a simple construction at no sacrifice of the capacity. In order to fulfill this aim, it provides an explosion-proof safety vent wherein upper peripheral edge of an opening of a bottomed cell container made of metal and the periphery of a seal plate made of metal are hermetically sealed by laser welding, a rivet serving as a terminal is inserted in a through hole provided on the central portion of the seal plate and hermetically fixed by crimping via a gasket, an exhaust hole is provided between the terminal and the periphery of the seal plate, and the exhaust hole is closed by a metal foil.

Abstract: To present a processing apparatus capable of forming an annular support portion for mounting a sealing plate on an elliptical battery case can at high precision and high productivity, and a structure of an elliptical battery using an elliptical battery case can.An elliptical battery case can 10 is rotatably held by a case can support mechanism 13. The battery case can 10 is rotated about its tubular center by a case can rotary mechanism 18. Two groove forming rollers 23, 24 are mounted on an oscillatable roller support lever 28. The roller support lever 28 traces the shape of the outer circumference of the battery case can 10, and oscillates within a plane orthogonal to the tubular center of the battery case can 10, and receives a pressing force from a pressurizing device 29 to press the both groove forming rollers 23, 24 against the outer circumference of the battery case can 10.

Abstract: To enhance the safety of battery, in a thin type battery, by securely cutting off electric connection when the internal pressure of the battery is raised.An upper valve disc and a lower valve disc are disposed through an electric insulating gasket, a part of the upper valve disc is formed in a recess shape, and a tiny hole and a continuous thin wall part are formed in a part of the lower valve disc, and the bottom of the recess part of the upper valve disc and the portion enclosed by the tiny hole and thin wall part of the lower valve disc are fused, and the structure is constituted so that the strength of the lower valve disc may be greater than the strength of the upper valve disc.

Abstract: The present invention relates to improvement of an active material of a negative electrode in a rectangular sealed alkaline storage battery. That is, by using a hydrogen storage alloy as the active material of the negative electrode, a capacity density as a battery can be enhanced and besides, mounting a space for the battery in equipments which use the battery can be reduced and dischargeability and storability can be improved.

Abstract: An organic electrolyte cell using copper oxide as a cathode active material and lithium or a lithium base alloy as an anode active material has a high energy density and is interchangeable with a general-purpose cell, but it has a disadvantage of voltage drop at an initial discharge stage. The present invention incorporates chalcopyrite as an active material into the copper oxide to eliminate the disadvantage, so that the cell may be used as an electric source for a precision electronic device such as an electronic watch. Furthermore, the present invention improves the efficiency of discharge of the copper oxide itself.