Assembling technology for lithium ion battery roll core after packaging the bottom

A lithium-ion battery and assembly process technology, applied to secondary batteries, circuits, electrical components, etc., can solve the problems of increasing defective products and increasing difficulty of completion, so as to improve the yield of good products, regulate operation standards, and avoid ear shaping bad effect

Inactive Publication Date: 2007-08-22
TIANJIN LISHEN BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As the battery capacity requirements are getting higher and higher, the ratio of the size of the winding core to the inner cavity of the casing is getting larger and larger, and the length of the tabs, especially the negative tabs, is required to be shorter, so that the assembly process such as entering the case is in accordance with the existing The difficulty of completing the technological process increases, resulting in an increase in defective products

Method used

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  • Assembling technology for lithium ion battery roll core after packaging the bottom
  • Assembling technology for lithium ion battery roll core after packaging the bottom
  • Assembling technology for lithium ion battery roll core after packaging the bottom

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Embodiment Construction

[0042] Below in conjunction with the accompanying drawings and preferred embodiments, the specific implementation, structure and features provided by the present invention are described in detail as follows:

[0043] As shown in Figure 1-Figure 9b, an assembly process for a lithium-ion battery winding core after wrapping the bottom, is characterized in that the specific implementation steps are as follows:

[0044] (1) Carry out the battery roll core flattening and shaping according to the routine;

[0045] This process requires the roll core to be flattened and wrapped with protective tape at the bottom. It is required that the protective tape be wrapped tightly and evenly, and the outward warping of both ends should be kept within 0.5mm.

[0046] (2) Add gasket and fix it;

[0047] This process is to add the upper gasket on the upper part of the core wrapped with the bottom tape. After the upper gasket is installed, fix it with a narrow protective tape on one side. The prot...

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Abstract

This invention relates to an assembly technology after packing the bottom of a rolled core of a Li ionic cell characterizing: 1, wrapping an adhesive tape to the bottom of a rolled core by the book, 2, adding a pad to be fixed, 3, pre-shaping to a positive pole ear, 4, welding the cell cover, 5, welding the positive pole ear, 6, shaping the cover to 90deg., 7, lifting the negative pole ear, 8, pressing the cover and rolling the core, 9, putting the entire rolled-core in the shell, 10, welding the surroundings of the shell and the cover after the core enters into the shell to finish the fitting.

Description

technical field [0001] The invention relates to an assembly process of a lithium ion battery, in particular to an assembly process after wrapping the bottom of a lithium ion battery winding core. Background technique [0002] Japan's Sony Corporation and Sanyo Corporation began practical research on lithium-ion secondary batteries in 1985 and 1988, respectively. All countries in the world have shown great interest and enthusiasm in the application of lithium-ion secondary batteries in the field of communications, portable electronic products, electric vehicles, and aerospace, and have aimed at the development of the performance of lithium-ion secondary batteries, especially in manufacturing The process has been continuously explored and improved. [0003] At present, in the production process of lithium-ion batteries, according to the process requirements, the basic process of assembly process includes winding of the core - flattening and shaping of the core - wrapping tape...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/38H01M10/40H01M10/36H01M10/0587
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 于申军吉跃华薛龙均邹玉峰王念举
Owner TIANJIN LISHEN BATTERY
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