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Shell used for lithium ion battery cell and manufacturing method, lithium ion battery cell and manufacturing method, and lithium ion battery

A technology of lithium ion and housing, applied in the direction of large-size battery/battery pack, small-size battery/battery pack, secondary battery, etc., can solve the problem of high cost of the housing, reduce the overall cost and improve the degree of versatility , The effect of reducing the use of molds

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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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] What this application is to solve is the technical problem of high cost of the shell produced by the existing lithium-ion battery shell manufacturing process

Method used

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  • Shell used for lithium ion battery cell and manufacturing method, lithium ion battery cell and manufacturing method, and lithium ion battery
  • Shell used for lithium ion battery cell and manufacturing method, lithium ion battery cell and manufacturing method, and lithium ion battery
  • Shell used for lithium ion battery cell and manufacturing method, lithium ion battery cell and manufacturing method, and lithium ion battery

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Embodiment Construction

[0040] 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. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0041] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom" etc. is based on the orientation or positional relationship shown in the drawings, and is only for It is convenient to describe the application and simplify the description, but not to indicate or imply that the device or element referred to must have a specific orientation, be constructed and op...

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Abstract

The invention provides a shell used for a lithium ion battery cell and a manufacturing method, the lithium ion battery cell and the manufacturing method, and a lithium ion battery. The shell is formedby bending a sheet at least once, and two ends of the bent sheet abut against each other to form a hollow cylindrical structure. By using the shell used for the lithium ion battery cell of the invention, an original shell manufactured by adopting a stretching process is changed into the shell formed by bending the sheet so that a universality degree of production equipment is improved, use of a mold is reduced, expenditure of the mold is reduced, and overall cost of the shell is further decreased; and meanwhile, excessive stretching of the material of the shell in the stretching process can be avoided so that the strength of the shell is more reliable, and safety is improved.

Description

technical field [0001] The present application relates to the field of lithium-ion batteries, in particular to a casing for a lithium-ion battery cell and a preparation method, a lithium-ion battery cell and a preparation method, and a lithium-ion battery. Background technique [0002] In recent years, with the country's support for the new energy industry, the penetration rate of new energy vehicles has also continued to increase. As the most important accessory on new energy vehicles, power batteries also have a great impact on the performance and cost of the vehicle. . In terms of classification of power batteries, currently commonly used power batteries are divided into three categories in terms of shape: cylindrical batteries, square batteries and soft pack batteries. However, the high cost of power lithium-ion batteries has become a bottleneck restricting the promotion and popularization of new energy production capacity. [0003] At present, the cost of the power li...

Claims

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Application Information

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IPC IPC(8): H01M2/02H01M2/04H01M10/0587H01M10/04H01M10/0525H01M50/10H01M50/124H01M50/147H01M50/15
CPCH01M10/0409H01M10/0587H01M10/0525H01M50/10H01M50/124H01M50/147H01M50/15Y02E60/10Y02P70/50
Inventor 孙威朴镇奎李根雨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
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