| CPC H01M 50/507 (2021.01) [H01M 10/425 (2013.01); H01M 50/209 (2021.01); H01M 50/517 (2021.01); H05K 1/189 (2013.01); H01M 2220/20 (2013.01)] | 4 Claims |
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1. A busbar module comprising:
a plurality of busbars configured to be fixed to a plurality of battery cells of a battery module including the plurality of battery cells; and
a plate-like flexible circuit body that includes a plurality of connection conductors corresponding to the plurality of busbars, wherein
the circuit body includes a trunk portion extending in a first direction in which the plurality of battery cells are arranged, and a plurality of branch portions branching from the trunk portion and connected to the busbars,
the circuit body includes a first circuit layer and a second circuit layer,
the first circuit layer is composed of a base layer, a first coating layer covering a first surface of the base layer, and a first conductor layer disposed between the first surface and the first coating layer,
the second circuit layer is composed of the base layer, a second coating layer covering a second surface of the base layer, and a second conductor layer disposed between the second surface and the second coating layer,
the branch portion has a thin portion composed of any one of the first circuit layer and the second circuit layer, and connects the trunk portion and the busbar in a state where the thin portion is flexurally deformed, and
the thin portion has a shape in which a rectangular end portion is curved outward.
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