Battery cell system with interconnected frames

摘要

A battery cell assembly includes a plurality of sub-assemblies. Each sub-assembly includes a heat sink and a first frame and a second frame disposed on opposite sides of the heat sink. The sub-assemblies are stacked to form a plurality of cell pockets that receive a battery cell. The battery cell assembly further includes a plurality of tie rods for fixing the plurality of sub-assemblies together. The first frame is formed with a plurality of through holes, and the second frame is formed with a plurality of protrusions with a hole extending therethrough. The frames are brought together such that each protrusion is at least partially received in a respective through hole. The interior surfaces of corresponding protrusions and through holes of the stack of frames form a passage for one of the tie rods to extend through.

主权项

1. A battery assembly comprising:
a plurality of sub-assemblies, each of the sub-assemblies including
a cell support,a first frame, anda second frame,
the first frame including an upper side and a lower side, a plurality of holes extending through the first frame from the upper side to the lower side,the second frame including an upper side and a lower side, a plurality of protrusions extending from the upper side thereof to an outer tip surface, a plurality of holes extending through the second frame from the lower side to a respective one of the outer tip surfaces, each of the plurality of protrusions including a solid wall portion surrounding the respective hole,the first and second frames being disposed on opposite sides of the cell support such that at least a portion of the cell support is sandwiched between the lower side of the first frame and the upper side of the second frame and such that the solid wall portion of each of the protrusions is at least partially received in a respective one of the holes in the first frame, whereby the first and second frames are interlockingly engaged,the plurality of sub-assemblies being stacked to form a plurality of cell pockets, each cell pocket being formed between two adjacent sub-assemblies; and a plurality of elongated fasteners, wherein the plurality of holes in the second frame of each of the sub-assemblies are substantially aligned to collectively form a plurality of passages for receiving the plurality of elongated fasteners therein to fix the plurality of sub-assemblies together.