Battery pack, busbar holder used for battery pack, and method for manufacturing battery pack
AssigneeEnvision AESC Japan Ltd.
InventorsNaoki Morisato, Yuta Motohashi
Life of this patent
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Abstract
A battery pack includes a plurality of unit cells, a plurality of busbars, a support member and a busbar holder. The unit cells have electrode tabs. The busbars have connection portions joined to the electrode tabs. The support member supports the electrode tabs. The busbar holder retains the busbars. The busbar holder has pressing parts that press the connection portions of the busbars toward the electrode tabs supported by the support member, and deforming parts that urge the pressing parts with a repulsive force in a direction in which the pressing parts are caused to move toward the electrode tabs. The deforming parts have leg parts that extend so as to project in a direction away from the busbars.
Claims11
A battery pack comprising:
- a plurality of unit cells that define a stack of unit cells that have electrode tabs;
- a plurality of busbars that have connection portions joined to the electrode tabs;
- a support member that supports the electrode tabs;
- and
- a busbar holder that retains the busbars,
- the busbar holder having pressing parts that press the connection portions of the busbars toward the electrode tabs supported by the support member, and deforming parts that urge the pressing parts with a repulsive force so that the pressing parts are caused to move the busbars toward the stack of unit cells in the direction of the electrode tabs by the repulsive force,
- the deforming parts having leg parts that extend so as to project in a direction away from the busbars.
A battery pack manufacturing method for manufacturing an battery pack, the battery pack manufacturing method comprising:
- forming a stack stacking unit cells that define a stack of unit cells that have electrode tabs together with a support member that supports the electrode tabs;
- retaining a plurality of busbars having connection portions to be joined to the electrode tabs with a busbar holder that is disposed so as to face the electrode tabs supported by the support member;
- urging pressing parts of the busbar holder with a repulsive force so that the pressing parts are caused to move using deforming parts having leg parts that extend so as to project in a direction away from the busbars, and pressing the busbars held by the busbar holder toward the stack of unit cells in the direction of the electrode tabs by the pressing parts of the busbar holder;
- and
- joining the busbars and the electrode tabs in a state in which the busbars and the electrode tabs are pressed toward each other.
Dependencies are inferred from the claim text.