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Battery cell and manufacturing method thereof, and lithium battery

A technology of a battery cell and a manufacturing method, applied in the field of battery cells and their manufacturing, to achieve the effects of increasing energy density, improving performance, and reducing connection distance

Pending Publication Date: 2020-02-21
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

AI Technical Summary

Problems solved by technology

[0004] However, in the existing design schemes, the connection between the winding core and the top cover is mostly done by ultrasonically welding the lug and the connecting piece, and then welding with the terminal of the top cover. Most of the lugs are in a bent state. In order to leave a part of space for the bent tab between the end face of the winding core and the surface of the top cover, part of the space utilization rate will be sacrificed in this direction.

Method used

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  • Battery cell and manufacturing method thereof, and lithium battery
  • Battery cell and manufacturing method thereof, and lithium battery
  • Battery cell and manufacturing method thereof, and lithium battery

Examples

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Embodiment Construction

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

[0034] In the description of this application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", etc. are based on the orientation or positional relationship shown in the drawings, and are only for It is convenient to describe the application and simplify the description, rather than indicating or implying that the device or element referred to must have a specific orientatio...

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PUM

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Abstract

The invention provides a battery cell and a manufacturing method thereof. The battery cell comprises a shell, a roll core and a cover plate, wherein the roll core is arranged in the shell, and a tab terminal is arranged on an end surface of the roll core; the cover plate is cooperated with the end surface, provided with the tab terminal, of the roll core, a battery cell terminal is arranged on thecover plate, and a terminal guide groove where the tab terminal penetrates is arranged on the battery cell terminal. In the invention, a mode of bending a tab is avoided, a space utilization rate inthe shell can be improved, energy density of the battery cell is increased, and performance of the battery cell is improved.

Description

Technical field [0001] This application relates to the technical field of lithium ion batteries, and in particular to a battery cell and a manufacturing method thereof, and a lithium ion battery including the battery cell. Background technique [0002] In recent years, with the rapid advancement of lithium-ion power battery technology, the penetration rate of new energy vehicles has become higher and higher. While the penetration rate has increased, more and more problems about the cruising range of new energy vehicles have been exposed. Consumers Concerns about the reduction of the cruising range of new energy vehicles are also growing. For power battery companies, how to produce batteries with high energy density, high performance, and high cycle life determines whether the company can capture more customers and enhance its competitiveness. [0003] At present, within the industry, the design schemes for square aluminum shell batteries can be roughly divided into two types, one ...

Claims

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Application Information

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IPC IPC(8): H01M10/0587H01M10/0525H01M2/20H01M2/04
CPCH01M10/0525H01M10/0587H01M50/148H01M50/166H01M50/50Y02E60/10Y02P70/50
Inventor 孙威朴镇奎李根雨孙俊吉曹启飞金虎权周滢杰郭恒志
Owner 湖南领湃达志科技股份有限公司