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Rust prevention method of cylindrical lithium ion battery casing

A lithium-ion battery, cylindrical technology, applied in the manufacture of battery pack components, non-aqueous electrolyte storage batteries, electrolyte storage batteries, etc., can solve the problems of shortened battery life, waste of anti-rust oil, residual electrolyte, etc., to achieve extended The effect of service life, reduction of production cost, and usage saving

Inactive Publication Date: 2018-05-29
江苏海四达电源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even if a large amount of anti-rust oil is applied, the anti-rust effect is not good, and the battery is still easily rusted during use, resulting in shortened battery life
Moreover, the quality of the selected anti-rust oil will also have a greater impact on the anti-rust effect.
[0004] To sum up, the cleaning of the existing lithium-ion cylindrical batteries is not thorough, the electrolyte remains, and the energy consumption of drying is large, and the temperature is too high, which will easily cause the diaphragm in the battery to shrink, and the waste of anti-rust oil will also increase. Too much will eventually affect the performance and life of the battery

Method used

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  • Rust prevention method of cylindrical lithium ion battery casing
  • Rust prevention method of cylindrical lithium ion battery casing
  • Rust prevention method of cylindrical lithium ion battery casing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) First scrubbing: scrub the main body and both ends of the cylindrical lithium-ion battery case with deionized water, wherein the temperature of the deionized water is 35°C, and the scrubbing time is 45s;

[0033] (2) Second flushing: use deionized water to perform high-pressure flushing on the cap and notch of the battery after the first scrubbing, wherein the temperature of the deionized water is 35°C, the scrubbing time is 45s, and the deionized water The water pressure is 0.7MPa;

[0034] (3) Air-drying: Use a whirlpool fan to dry the washed cylindrical lithium-ion battery case to remove the deionized water on the surface of the cylindrical lithium-ion battery case, and the surface temperature of the battery after air-drying is ≤60°C;

[0035] (4) Spray anti-rust oil: Use a wide-angle spray nozzle to atomize the anti-rust oil at high pressure and apply it on the notch of the cylindrical lithium-ion battery, the edge of the cap and the shell, so that the surface o...

Embodiment 2

[0039] (1) First scrubbing: scrub the main body and both ends of the cylindrical lithium-ion battery case with deionized water, wherein the temperature of the deionized water is 40°C, and the scrubbing time is 60s;

[0040] (2) Second flushing: use deionized water to perform high-pressure flushing on the cap and notch of the battery after the first scrubbing, wherein the temperature of the deionized water is 40°C, the scrubbing time is 60s, and the The water pressure is 0.6MPa;

[0041] (3) Air-drying: Use a whirlpool fan to dry the washed cylindrical lithium-ion battery case to remove the deionized water on the surface of the cylindrical lithium-ion battery case, and the surface temperature of the battery after air-drying is ≤60°C;

[0042] (4) Spray anti-rust oil: Use a wide-angle spray nozzle to atomize the anti-rust oil at high pressure and apply it on the notch of the cylindrical lithium-ion battery, the edge of the cap and the shell, so that the surface of the battery is...

Embodiment 3

[0046] (1) First brushing: use deionized water to scrub the main body and both ends of the cylindrical lithium-ion battery case, wherein the temperature of the deionized water is 30°C, and the scrubbing time is 40s;

[0047] (2) Second flushing: use deionized water to perform high-pressure flushing on the cap and notch of the battery after the first scrubbing, wherein the temperature of the deionized water is 30°C, the scrubbing time is 40s, and the The water pressure is 0.8MPa;

[0048] (3) Air-drying: Use a whirlpool fan to dry the washed cylindrical lithium-ion battery case to remove the deionized water on the surface of the cylindrical lithium-ion battery case, and the surface temperature of the battery after air-drying is ≤60°C;

[0049] (4) Spray anti-rust oil: Use a wide-angle spray nozzle to atomize the anti-rust oil at high pressure and apply it on the notch of the cylindrical lithium-ion battery, the edge of the cap and the shell, so that the surface of the battery i...

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PUM

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Abstract

The invention relates to the technical field of lithium batteries, in particular to a rust prevention technology of a cylindrical lithium ion battery casing. The technology comprises the following steps: (1), performing brushing, washing and air drying on the cylindrical lithium ion battery casing, so as to remove stains on the surface of the cylindrical lithium ion battery casing; (2), applying rust-preventative oil: coating the rust-preventative oil which is subjected to high-pressure atomization onto the cylindrical lithium ion battery casing through a wide-angle spray nozzle; (3), drying.Through the method, electrolyte on the surface of the battery can be thoroughly cleaned, and the rust-preventative oil can be uniformly sprayed on the surface of the cylindrical battery casing, so that the rust prevention property of the battery casing is improved.

Description

technical field [0001] The invention relates to the technical field of lithium batteries, in particular to a method for preventing rust of a cylindrical lithium ion battery casing. Background technique [0002] Lithium-ion batteries are widely used in daily life and industry. With the strong support of national policies, the development prospects of lithium-ion batteries are good. Under this broad prospect, the requirements for lithium-ion batteries are also getting higher and higher. During use, the lithium-ion battery is easily corroded by the environment, and rust spots appear on the cylindrical lithium-ion battery casing, which directly leads to shortening the service life of the cylindrical lithium-ion battery casing. [0003] At present, after the conventional cylindrical lithium-ion battery casing is filled with liquid and sealed, it is cleaned with pure water, and the battery is dried at a temperature above 100°C, then coated with anti-rust oil, and then dried. Usi...

Claims

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Application Information

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IPC IPC(8): H01M2/02H01M10/058H01M50/124
CPCH01M10/058H01M50/124H01M50/1245Y02E60/10Y02P70/50
Inventor 沈晓彦赵凯斐夏树强胡丹丹
Owner 江苏海四达电源有限公司
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