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Battery and battery preparation method

A technology of batteries and winding cores, which is applied in the field of batteries and a battery preparation, which can solve the problems of increasing length, affecting the yield rate of winding core pole segments, and inability to guarantee the quality of ultrasonic welding of tabs, so as to improve energy density and reduce difficulty. Effect

Pending Publication Date: 2021-01-22
湖南领湃科技股份有限公司 +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing manufacturing process, on the one hand, when the number of overlapping layers of two winding core tabs exceeds 100 layers, the existing ultrasonic welding technology cannot guarantee the ultrasonic welding quality of the tabs; When the thickness of the sheet is large, the length of the winding core tab will increase a lot, which will affect the yield rate of the winding core pole segment.

Method used

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Embodiment Construction

[0048] The following description provides specific application scenarios and requirements of the present invention, with the aim of enabling those skilled in the art to manufacture and use the contents of the present invention. Various local modifications to the disclosed embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and embodiments without departing from the spirit and scope of the application. application. Thus, the application is not limited to the embodiments shown, but is to be accorded the widest scope consistent with the claims.

[0049] The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting.

[0050] These and other features of the present application, as well as the operation and function of the relevant elements of the structure, and the economy of assembly and manufacture of the components, ma...

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Abstract

The invention provides a battery and a battery preparation method. The battery comprises a housing, wherein the housing comprises a first accommodating cavity, a cover plate and a first roll core assembly; the first accommodating cavity comprises a first opening; the cover plate is used for sealing the first opening; the first roll core assembly is arranged in the first accommodating cavity and comprises a first laminated roll core, a second laminated roll core and a connecting piece, the first laminated roll core comprises a first roll core main body and a first roll core tab connected with the first roll core main body, the second laminated roll core comprises a second roll core main body and a second roll core tab connected with the second roll core main body, one end of the connectingpiece is connected with the first roll core tab and the second roll core tab, the other end of the connecting piece is connected with the cover plate, and the first roll core tab and the second roll core tab are respectively connected to different parts of the connecting piece.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a battery and a battery preparation method. Background technique [0002] In recent years, with the support and guidance of the national strategy, the development of the new energy automobile industry has entered a new stage. The Ministry of Industry and Information Technology issued the "New Energy Automobile Industry Development Plan (2021-2035)" (draft for comments), pointing out the development vision of my country's new energy automobile industry for the next fifteen years. How to further increase the penetration rate of new energy vehicles has become the focus of the next stage of development. [0003] The cruising range is a restrictive factor for consumers to choose new energy vehicles. Anxiety about cruising range has been a constant topic in recent years. In order to further increase the cruising range of new energy vehicles, it is necessary to further increase the charging ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/04H01M50/538H01M50/528H01M10/0525H01M10/0583
CPCH01M10/0431H01M10/0525H01M10/0583Y02E60/10Y02P70/50
Inventor 韩好孙威王泽宇张婷婷
Owner 湖南领湃科技股份有限公司
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