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Method for producing lithium-ion battery and lithium-ion battery

A technology of lithium-ion batteries and manufacturing methods, which is applied in the manufacture of electrolyte batteries, secondary batteries, and final product manufacturing, and can solve the problems of battery safety hazards and excessive gas

Inactive Publication Date: 2007-09-05
SHENZHEN BAK BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the charging and discharging process of the battery, the polar active material of the battery will react with the electrolyte to produce some gas, especially during the pre-charging process, the gas produced is more, if it is not discharged in time, it will bring safety hazards to the battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The battery is manufactured according to the usual process. After precharging, the battery is baked in an oven, protected with dry air. The temperature of the oven is 40°C, and the baking time is 8 hours. After the baking is completed, subsequent processes such as sealing are carried out.

Embodiment 2

[0019] The battery is manufactured according to the usual process. After pre-charging, the battery is baked in an oven, protected with dry nitrogen. The temperature of the oven is 55°C, and the baking time is 7 hours. After the baking is completed, subsequent processes such as sealing are carried out.

Embodiment 3

[0021] The battery is manufactured according to the usual process. After pre-charging, the battery is baked in an oven, protected with dry helium, the temperature of the oven is 65°C, and the baking time is 5 hours. After the baking is completed, subsequent processes such as sealing are carried out.

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PUM

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Abstract

The invention is concerned with manufacture method of the lithium ion cell, consists of: matches the material, coatings, makes slice, assembly, infuses liquid, pre-charge, seals the opening, the characteristic is: includes the step that is firing the cell after the pre-charge. The invention can eject the residue gas in the cell after the pre-charge in order to avoid the safety hidden trouble.

Description

【Technical field】 [0001] The invention relates to the field of lithium ion batteries, in particular to a manufacturing method of the lithium ion battery and the battery. 【technical background】 [0002] In recent years, the functions of computers, communication electronic products, and consumer electronic products have become more and more powerful, and their external dimensions have become smaller and lighter, so battery products with high capacity and small size are popular. Lithium-ion batteries, in particular, have the characteristics of large capacity, high energy density, and high voltage, and their market share in mobile phones, notebook computers, digital cameras and other products continues to rise. [0003] Lithium-ion batteries are based on lithium cobalt oxide (LiCoO 2 ), lithium nickel oxide (LiNiO 2 ) or lithium manganese oxide (LiMn 2 o 4 ) etc. as the positive electrode active material, and lithium metal, lithium alloy or carbon material as the negative el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/38H01M10/40F26B3/02F26B9/06H01M10/0525H01M10/058
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 王春光任灿陈保同孙菊梅
Owner SHENZHEN BAK BATTERY CO LTD
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