Abstract: There is provided an electric storage device having a novel fastening structure of a plastic member which can reduce cost with a simple configuration. An electric storage device according to this invention includes an electrode assembly, a case housing the electrode assembly, a plastic member arranged at an outer surface of the case, the plastic member having a joining surface facing the outer surface of the case, and an external terminal supported by the plastic member and electrically connected to the electrode assembly. The plastic member is a synthetic resin containing an inorganic fiber and is bonded to the outer surface of the case with the inorganic fiber exposed at the joining surface.

Abstract: Provided is a battery assembly that is lightweight while ensuring sufficient bonding strength that is required between frames, as well as a method of manufacturing the same. The battery assembly includes a plurality of cell units that are integrated together, each of the plurality of cell units including: a cell having a metal case; and a plastic frame that is integrally formed with an outer surface of the case, wherein the cell units are integrated together by having the frames of adjacent ones of the cell units joined together through surfaces thereof.

Abstract: There is provided a battery assembly wherein assembly can be facilitated by reducing the number of components to be assembled, by integrally fixing resin plates (52, 62) on the inside of metal plates (51, 61) of end plates (5, 6). A laminated battery body (3) is constituted by adjacently arranging battery holders (2) made of resin forming cooling passages (4) between a plurality of batteries (1) and holding such batteries (1) on both sides between other batteries (1). The metal plates (51, 61) and resin plates (52, 62) that are integrally fixed on the inside of these metal plates are provided on the outside of the batteries (1) at both ends of the laminated battery body (3). Thus, the batteries (1) are held by the resin plates (52, 62), and the end plates (5, 6) are respectively arranged to form the cooling passages (4) between these batteries (1) and the metal plates (51, 61). The laminated battery body (3) is fixed in a clamped manner by fixing means clamping these end plates (5, 6).

Abstract: A conductor for connecting terminals of a battery in which a conductor for connecting terminals (8) can be easily welded to both positive-electrode terminal (1) and negative-electrode terminal (4), and an assembled battery using the same are provided. The conductor for connecting terminals (8) is formed in such a manner that a plate-shaped part (8a) including an aluminum member is overlapped with a plate-shaped part including a second metal having a melting point higher than that of the aluminum member, a first region having the exposed aluminum member and a second region having the exposed second metal are formed in one surface, and the second metal is exposed to a region opposed to the second region, in the other surface. The conductor for connecting terminals (8) connects the positive-electrode terminal (1) including the aluminum member of a non-aqueous electrolyte secondary battery (7) to the negative-electrode terminal (4) of another battery.

Abstract: It is an object of the present invention to provide a battery in which current collecting connector 2 and 3 and groups 1d and 1e of metal foil of a power generating element 1 can be easily connected, respectively, and a method of manufacturing the same. First plate portions 2b and 3b which respective protruding ends of metal foil of the groups 1d and 1e of metal foil of the power generating element 1 come in contact with or close to and second plate portions 2c and 3c protruding from the first plate portions 2b and 3b toward the power generating element 1 and disposed only at one outer side portions of the groups 1d and 1e of metal foil are provided to the other portions of the current collecting connectors 2 and 3 of the invention and the groups 1d and 1e of metal foil are welded to the second plate portions 2c and 3c.