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Positive electrode assembly, negative electrode assembly and battery cover plate assembly

A positive electrode and component technology, which is applied to battery pack parts, battery cover/end cover, battery box/coating, etc., can solve the problems of heavy weight of battery cover components, high production cost, and complicated assembly process

Inactive Publication Date: 2021-09-07
刘义
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a positive electrode assembly, a negative electrode assembly and a battery cover assembly, which effectively solves the technical problems of the existing battery cover assembly such as heavy weight, high production cost, and complicated assembly process.

Method used

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  • Positive electrode assembly, negative electrode assembly and battery cover plate assembly
  • Positive electrode assembly, negative electrode assembly and battery cover plate assembly
  • Positive electrode assembly, negative electrode assembly and battery cover plate assembly

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] In the drawings of the embodiments of the present invention, the same or similar symbols correspond to the same or similar components; , "top", "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or It ...

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Abstract

The invention relates to a positive electrode assembly, a negative electrode assembly and a battery cover plate assembly. The upper and lower surfaces of the positive electrode assembly and the negative electrode assembly are of hollow structures, the weight of the battery cover plate assembly can be effectively reduced, the weight of a plurality of series-parallel battery packs can be effectively reduced, and the requirement of the battery packs for light weight is met. A first cavity and a third cavity formed by hollowing out the top of the cover plate can also be used as positioning holes of battery group series-parallel conducting bars. The top copper pressing ring and the negative electrode aluminum pressing plate are connected in a brazing composite welding mode, an aluminum plate and a copper plate are independently provided for punch forming on the aspect of providing raw materials, waste of the raw materials in the punch forming process is reduced, the manufacturing process is simplified, and the production cost of the cover plate assembly is low; in the aspect of structure, the risk that the copper-aluminum composite surface is peeled off can be avoided in a laminated clamping and pressing mode. All the components are connected in a sealed and fastened mode, the assembling process is simplified, the steps of riveting and the like are omitted, and full-automatic assembling can be achieved conveniently.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a positive electrode assembly, a negative electrode assembly and a battery cover plate assembly. Background technique [0002] The battery cover assembly generally includes a positive electrode assembly and a negative electrode assembly. In order to meet the requirements of electrical conductivity, both the positive electrode assembly and the negative electrode assembly include poles. The weight of the solid pole is relatively large, which increases the weight of the battery pack and cannot meet the current requirements for batteries. Group lightweight requirements. [0003] Existing negative electrode components generally use copper-aluminum friction welding composite technology or copper-aluminum composite board stamping forming, which is composed of copper and aluminum boards to form a copper-aluminum composite board, and the copper-aluminum composite board is stamped to for...

Claims

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Application Information

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IPC IPC(8): H01M50/562H01M50/564H01M50/566H01M50/147
CPCH01M50/562H01M50/564H01M50/566H01M50/147Y02E60/10
Inventor 刘义
Owner 刘义
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