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Line rolling method of cylindrical battery

A cylindrical battery, rolling wire technology, applied in battery pack parts, circuits, electrical components, etc., can solve the problems of normal discharge of batteries, inability of battery electrons to migrate, damage to electronic products, etc., so as to reduce the risk of voltage breakage , The effect of reducing scrap rate and reducing friction

Active Publication Date: 2011-07-06
FUJIAN NANPING NANFU BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the organic electrolyte leaks from the inside of the battery, it will not only damage electronic products and pollute the environment, but also prevent the electrons from moving inside the battery, and the battery cannot be discharged normally.

Method used

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  • Line rolling method of cylindrical battery
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  • Line rolling method of cylindrical battery

Examples

Experimental program
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Effect test

preparation example

[0040] The batteries prepared in the embodiments of the present invention are all AA-type cylindrical lithium-iron disulfide batteries, and the preparation method is as follows:

[0041] FeS 2 The powder (natural pyrite collected from Yunfu, Guangdong) is used as the positive electrode active material, and the material is mixed with the conductive agent (graphite and acetylene black) to make the positive electrode powder. Use an organic solvent to make the adhesive into an adhesive, wherein the adhesive is styrene-ethylene / butylene-styrene block copolymer (SEBS, trade name Kraton G1651), and the organic solvent is produced by Shell A mixture of Shell A100 (aromatic solvent) and Shell OMS (isoparaffin) in a mixing ratio of 4:6 (by weight).

[0042] The above positive electrode powder and binder are mixed in a weight ratio of 2:1 and then stirred to form a slurry. In the dry matter of the positive electrode slurry finally made, the weight ratio of each component is:

[0043] ...

Embodiment 1

[0047] Provide several battery cases manufactured in the preparation example, apply lubricant to the position of the rolling line by the above-mentioned oiling method, and then roll the battery case. Among them, the target value of the rolling line position is 4.20mm, the target value of the R angle on the rolling line is 0.65mm, and the target value of the rolling line depth is 1.15mm. After the rolling line is finished, inject electrolyte, seal and make AA battery.

Embodiment 2

[0051] Provide several battery cases manufactured in the preparation example, apply lubricant to the position of the rolling line by the above-mentioned oiling method, and then roll the battery case. Among them, the target value of the rolling line position is 4.22mm, the target value of the R angle on the rolling line is 0.7mm, and the target value of the rolling line depth is 1.2mm. After the rolling line is finished, inject electrolyte, seal and make AA battery.

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Abstract

The invention provides a line rolling method of a cylindrical battery, which comprises the steps of: coating lubricant at the line rolling position of a battery shell, and rolling lines on the battery shell at the line rolling position. In the line rolling method provided by the invention, before line rolling, lubricant is coated at the line rolling position of the battery shell to reduce the friction force between a line rolling wheel and the battery shell so as to enable the radian of the line rolling position of the battery shell to be clear and smooth, so that the stability of line rolling parameters can be maintained and the appearance of a battery is good, the rejection ratio of the battery can be greatly reduced and the risk that the line rolling wheel is broken due to pressure of the battery shell is reduced. In addition, the line rolling method does not influence other performances of the battery.

Description

technical field [0001] The invention relates to the technical field of chemical power sources, in particular to a rolling method for cylindrical batteries. Background technique [0002] With the rapid development of electronic technology, especially the emergence of digital cameras, handheld game consoles, and various video game consoles, the demand for batteries is getting higher and higher. Conventional high-power and high-capacity batteries (eg, alkaline batteries) are no longer adequate. Therefore, there is a need for a battery capable of sustained high power discharge. Due to the advantages of high energy density, high voltage, wide operating temperature range, and long life, lithium batteries have low self-discharge rate, long and good storage life, stable discharge voltage, and excellent safety performance, and have been favored by more and more people. attention and attention. [0003] In lithium batteries, conventional lithium-iron disulfide batteries are based o...

Claims

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Application Information

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IPC IPC(8): H01M2/02H01M2/08B21D17/04
CPCY02E60/12Y02E60/10
Inventor 张清顺余佑锋常海涛陈行建徐小春
Owner FUJIAN NANPING NANFU BATTERY
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