Battery module for secondary battery
AssigneeSK Innovation Co., Ltd.
InventorsJi Hoon LIM, Kwan Yong KIM, Tae Gu LEE, Jae Il HWANG
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Abstract
Provided is a battery module for a secondary battery. The battery module includes a busbar for a connection of electrode tabs. According to exemplary embodiments of the present disclosure, in a battery module for a secondary battery, a thickness of a welded portion may be reduced while maintaining a total cross-sectional area of a busbar when electrode tabs of each of secondary batteries are connected in series or in parallel by a laser welding. Thus, the battery module may have an enhanced welding quality, and also may have an effect of being applicable to a high-capacity battery or a battery that is used for a long period of time.
Claims10
A battery module with a plurality of secondary batteries and electrode tabs extending from each of the secondary batteries and welded to each other, the battery module comprising:
- a busbar disposed in close contact with an electrode tab connection portion, to perform a welding of an electrode tab and a neighboring electrode tab,
- wherein the busbar comprises a welding groove formed to be recessed in a welded portion, and
- wherein an average thickness of the busbar is greater than a thickness of the electrode tab, and a thickness of the busbar in which the welding groove is formed is less than or equal to the thickness of the electrode tab.
Dependencies are inferred from the claim text.