BATTERY PACK

PROBLEM TO BE SOLVED: To provide a battery pack capable of preventing movement of an electric cell by suppressing deformation of an exterior member.SOLUTION: An electric cell 110 of a battery pack 100 comprises a battery body 110H including a power generating element 111, and an exterior member (laminate film) for sealing the battery body. A second spacer 122 of the battery pack comprises a plurality of coupling pins 122i for engaging the laminate film. A first extension part 112f of the laminate film extends from a first edge side 110p of the battery body along a direction crossing a lamination direction Z. A second extension part 112g of the laminate film adjoins the first edge side 110p, extends outward along the direction crossing the lamination direction Z from the second edge part 110q of the battery body located closer to the power generating element side than the first edge side longer than the first extension part, and faces a corner of the electric cell, and includes a plurality of coupling holes 112e engaging so as to correspond to each coupling pin. One of the plurality of coupling holes is joined to the corresponding coupling pin 122ii.SELECTED DRAWING: Figure 7 【課題】外装部材の変形を抑制して単電池の移動を防止できる組電池を提供する。【解決手段】組電池１００の単電池１１０は発電要素１１１を含む電池本体１１０Ｈと電池本体を封止する外装部材（ラミネートフィルム）を備えた。組電池の第２スペーサ１２２はラミネートフィルムを係合する複数の連結ピン１２２ｉを備えた。ラミネートフィルムの第１延在部１１２ｆは電池本体の第１縁辺１１０ｐから積層方向Ｚと交差する方向に沿って延在した。ラミネートフィルムの第２延在部１１２ｇは第１縁辺１１０ｐと隣り合い、第１縁辺よりも発電要素側に位置する電池本体の第２縁辺１１０ｑから積層方向Ｚと交差する方向に沿って第１延在部よりも長く外方に延在して単電池の角部に臨み、各々の連結ピンに対応して係合する複数の連結孔部１１２ｅを備えた。複数の連結孔部のうちの１つは、対応する連結ピン１２２ｉｉと接合した。【選択図】図７