| CPC H01M 50/209 (2021.01) [H01M 50/244 (2021.01); H01M 50/271 (2021.01); H01M 50/289 (2021.01); H01M 50/291 (2021.01); H01M 50/502 (2021.01)] | 23 Claims |
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1. A battery pack, comprising:
a plurality of battery cells arranged in a first direction; and
a first frame and a second frame each extending in the first direction with the plurality of battery cells therebetween, the first frame and the second frame surrounding outer surfaces of the plurality of battery cells and being fitted into each other in a second direction that intersects with the first direction, each of the first and second frames including a side portion extending in the first direction; and a first end portion and a second end portion each extending in the second direction that intersects with the first direction from a front end and a rear end of the side portion in the first direction, and surrounding a front and a rear of the plurality of battery cells;
a first coupling block configured to couple the first end portions of the first and second frames to each other and extending across the first end portions of the first and second frames that are fitted and engaged with each other; and
a second coupling block configured to couple the second end portions of the first and second frames to each other and extending across the second end portions of the first and second frames that are fitted and engaged with each other,
wherein:
the first end portion and the second end portion each include a hollow cavity portion therein,
at least a portion of the first coupling block and the second coupling block is fitted into the cavity portions of the first end portion and the second end portion, and
the first end portion and the second end portion each further include:
double plates facing each other in the first direction with the cavity portion therebetween, and
protrusions extending in the second direction and recesses recessed in the second direction alternately stacked in a third direction of the double plate.
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