Battery cell and battery

A cell and battery technology, applied in non-aqueous electrolyte batteries, lithium batteries, secondary batteries, etc., can solve the problems of difficult to control the thickness of the cell, high temperature, and difficult heat dissipation of the cell, and achieve the effect of solving the difficulty of heat dissipation.

Pending Publication Date: 2020-07-28
湖南领湃达志科技股份有限公司 +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

During the manufacturing of the battery cell, due to the uneven internal structure of the battery cell, such as welding tabs on the pole piece, closing the diaphragm, etc., it is difficult to control the thickness of the battery cell. Leave a certain margin, because the battery cell and the cover are connected flexibly, so the battery cell is easy to shake in the shell, causing a safety hazard
In addition, due to the structure of the battery cell, there is only one-way heat transfer between the pole piece and the diaphragm, which leads to a serious temperature gradient distribution phenomenon, and the phenomen

Method used

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  • Battery cell and battery
  • Battery cell and battery
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Embodiment Construction

[0023] The following description provides specific application scenarios and requirements of the application, with the purpose of enabling those skilled in the art to manufacture and use the contents of the application. 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.

[0024] The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. For example, as used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. When used in this specification, the terms "comprising", "comprisi...

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Abstract

The invention provides a battery cell. The battery cell comprises a lower cover plate and a fixed plate erected on the lower cover plate, wherein a diaphragm, a negative pole piece and a positive polepiece are wound on the fixed plate. The invention also provides a battery. The battery comprises the battery cell, a battery shell with openings at two ends and an upper cover plate, wherein the battery cell penetrates into the battery shell from the bottom of the battery shell, the lower cover plate seals the bottom opening of the battery shell, and the upper cover plate seals the top opening ofthe battery shell, so the battery cell and the battery shell are fixedly connected through the lower cover plate and cannot shake. In the charging and discharging process of the battery, heat generated by the battery pole pieces can be transferred to the lower cover plate through the fixed plate and then transferred to the battery shell and the exterior of the battery shell, so the problem of difficulty in heat dissipation is effectively solved.

Description

technical field [0001] The present application relates to the field of battery manufacturing, in particular to a battery cell and a battery. Background technique [0002] In the battery manufacturing process, especially in the lithium battery manufacturing process, the manufacture of batteries is very important. In the prior art, the manufacture of electric cores mostly adopts the winding method. During the manufacturing of the battery cell, due to the uneven internal structure of the battery cell, such as welding tabs on the pole piece, closing the diaphragm, etc., it is difficult to control the thickness of the battery cell. Leave a certain margin in between, because the battery cell and the cover plate are flexibly connected, so the battery cell is easy to shake in the casing, causing a safety hazard. In addition, due to the structure of the battery cell, there is only one-way heat transfer between the pole piece and the diaphragm, which leads to a serious temperature g...

Claims

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Application Information

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IPC IPC(8): H01M10/04H01M10/052H01M10/0587H01M10/613H01M10/654H01M10/6554
CPCH01M10/0431H01M10/052H01M10/0587H01M10/613H01M10/654H01M10/6554Y02E60/10Y02P70/50
Inventor 范佳臻吴月田秀君李敏陈淑青唐元鑫
Owner 湖南领湃达志科技股份有限公司
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