Current collector assembly, battery cell and battery pack

Abstract

The invention discloses a current collector assembly, a battery cell and a battery pack. The current collector assembly comprises at least two tab groups, wherein each tab group comprising a plurality of tabs arranged in a stacked manner; a conductive connection component which comprises at least three conductive connection sheets, wherein the at least three conductive connection sheets are arranged at intervals in the thickness direction of the conductive connection sheets, and one tab group is stacked between every two adjacent conductive connection sheets; and at least one of the two adjacent conductive connecting sheets is electrically connected with each tab in the tab group. According to the current collector assembly provided by the embodiment of the invention, the welding difficulty of the conductive connecting sheet and the tab group can be reduced, false soldering or pseudo soldering is avoided, the welding effect is ensured, and the overcurrent capability of current is improved.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a current collector assembly, a battery cell and a battery pack with the same. Background technique [0002] In the prior art, the tabs of each layer of the battery need to be welded with the tabs of other layers. When the capacity of the battery needs to be increased, the number of layers of the tabs of the battery will also increase accordingly. The increase in the number of tab layers will lead to welding The difficulty also increases correspondingly, and phenomena such as false welding and false welding are prone to occur, and the connection quality of multi-layer tabs is also poor, resulting in a decrease in current overcurrent capability. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the present invention is to propose a current collector assembly, t...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the tabs of each layer of the battery need to be welded with the tabs of other layers. When the capacity of the battery needs to be increased, the number of layers of the tabs of the battery will also increase accordingly. The increase in the number of tab layers will lead to welding The difficulty also increases correspondingly, and it is easy to have false welding, false welding and other phenomena, and the connection quality of multi-layer tabs is also poor, resulting in a decrease in current flow capacity

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