Battery lug and battery module

Abstract

The invention discloses a battery lug and a battery module. The lug comprises a body and a lug unit which is arranged on the body and formed by extending from the body, wherein the lug unit comprises an elastic sheet formed by extending from the body, and an irregular spiral elastic sheet groove formed around the elastic sheet; the elastic sheet comprises a guide part of a long-narrow arc-shaped main body formed by extending from the body, and a main body part formed by extending from the other end of the guide part; the guide part is provided with a fused part; and the main body part is provided with a through hole. In the battery lug and the battery module, the lug unit is provided with the guide part of the long-narrow arc-shaped main body formed by extending from the body, so that the lug unit is elastic; the height differences or height errors of different battery cells are adapted; and the welding quality is enhanced. The main body part and the battery cells are welded in a contact way, so that the lug unit and the battery cells can be connected conveniently by welding. The fused part is arranged on the guide part of the high-elasticity long-narrow arc-shaped main body, so that design and fusing are facilitated. Moreover, the fused part is a weak position of structural heat, so that the fusing position is reasonable, and the module can be protected.

Description

technical field [0001] The invention relates to battery components, in particular to a battery tab and a battery module. Background technique [0002] The current negative tab of the battery is made of stainless steel, and the fuse technology for the battery is not good enough. There are even some modules that are not designed to fuse, which is not conducive to protecting the battery module. The melting point of some battery tabs is too high, the fuse design is unreasonable, and the fusing position of the battery tab is unreasonable, which needs to be designed according to the internal resistance and strength. Moreover, the existing battery lugs have poor seismic performance, and are deviated in the formation of resistance welding, and the consistency of the entire module is poor. In addition, the existing battery tabs are prone to sparks during resistance welding. Contents of the invention [0003] Based on this, it is necessary to provide a battery tab that is benefici...

AI Technical Summary

Problems solved by technology

[0002] The current battery negative tab is made of stainless steel, and the battery fusing technology is not good enough, and some modules are not designed to be fusing, which is not conducive to protecting the battery module

The melting point of some battery tabs is too high, the fuse design is unreasonable, and the fusing position of the battery tab is unreasonable. It needs to be designed according to the internal resistance and strength.

Moreover, the existing battery tabs have poor anti-seismic performance, and are deviated in the composition of resistance welding, and the consistency of the entire module is poor.

In addition, the existing battery tabs are prone to sparks during resistance welding

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