| CPC H01M 10/6568 (2015.04) [H01M 10/613 (2015.04); H01M 10/625 (2015.04); H01M 50/10 (2021.01); H01M 2220/20 (2013.01)] | 23 Claims |
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1. A battery pack comprising:
battery cells, each comprising end portions in a height direction of the battery cells;
a case accommodating the battery cells and a cooling fluid to cool the battery cells; and
a first holder plate and a second holder plate that are coupled to the case to face each other along the case such that the end portions of the battery cells are insertable through the first and second holder plates, an accommodation space being defined between the first and second holder plates to accommodate the cooling fluid,
wherein the case, the battery cells, and the first and second holder plates have heights in the height direction of the battery cells that satisfy the following condition:
a height between the first and second holder plates<a height of the battery cells<a height of the case, and
the case being a hollow member which is open in the height direction of the battery cells from a first end of the case to a second end of the case that is opposite the first end along the height direction of the battery cells, the hollow member comprising a pair of first wall portions and a pair of second wall portions connecting the pair of first wall portions so as to surround the battery cells, the first and second holder plates being spaced apart along the height direction of the battery cells and respectively arranged at the first and second ends of the case so as to cover and overlap outward-facing surfaces of the case along the height direction of the battery cells, the outward-facing surfaces of the case facing outward along the height direction of the battery cells.
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