POWER STORAGE DEVICE

PROBLEM TO BE SOLVED: To provide a power storage device which can make contribution to the increase in energy density while suppressing the nonuniform degradation of a battery.SOLUTION: A power storage device 1 comprises: a battery element 9 having such a structure that a positive electrode part 10...

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Bibliographische Detailangaben
Hauptverfasser: AMAGAI SHUNSUKE, TERADA ICHIRO, OTA TAKASHI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a power storage device which can make contribution to the increase in energy density while suppressing the nonuniform degradation of a battery.SOLUTION: A power storage device 1 comprises: a battery element 9 having such a structure that a positive electrode part 10 and a negative electrode part 20 are opposed to each other through a separator 30, and an electrolyte 9b is provided around the positive electrode part 10, the negative electrode part 20 and the separator 30; an outer packaging body 2 which encases the battery element 9; a positive electrode terminal 7a, 7b formed in a region of the outer packaging body 2 covering the battery element 9, of which one end is electrically connected to the positive electrode part 10, and the other end is exposed outside the outer packaging body 2; and a negative electrode terminal 8a, 8b formed in a region of the outer packaging body 2 covering the battery element 9, of which one end is electrically connected to the negative electrode part 20, and the other end is exposed outside the outer packaging body 2, wherein the positive electrode terminal 7a, 7b and the negative electrode terminal 8a, 8b are each provided at plural positions.SELECTED DRAWING: Figure 4 【課題】バッテリの不均一な劣化を抑制しつつ、エネルギー密度の向上に寄与する蓄電デバイスを提供すること。【解決手段】蓄電デバイス1は、正極部10及び負極部20がセパレータ30を介して対向し、正極部10、負極部20、及びセパレータ30の周囲に電解質9bが設けられた構造を有する電池要素9と、電池要素9を収容する外装体2と、外装体2の電池要素9を覆う領域において形成され、一端が正極部10に電気的に接続されると共に、他端が外装体2の外部に露出する正極端子7a、7bと、外装体2の電池要素9を覆う領域において形成され、一端が負極部20に電気的に接続されると共に、他端が外装体2の外部に露出する負極端子8a、8bと、を備え、正極端子7a、7b及び負極端子8a、8bは、それぞれ複数設けられる。【選択図】図4