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Surface processing method of battery shell

A technology for surface treatment and battery case, applied in the field of surface treatment of battery case, can solve the problems of difficult process control, low treatment efficiency, complicated surface treatment method, etc. Effect

Inactive Publication Date: 2017-10-13
陈海燕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to address the above problems and provide a battery shell surface treatment method to solve the problems that the surface treatment methods of battery shells in the existing market are extremely complicated, the process control is difficult, and the treatment efficiency is low.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In this embodiment, a battery case surface treatment method includes the following steps:

[0023] a. Put the battery case into an ultrasonic cleaning machine equipped with citric acid solution for cleaning, and degrease the battery case, wherein the concentration of the citric acid solution is 4%;

[0024] b. Washing the battery case after degreasing treatment, wherein the water is deionized water;

[0025] c. Remove the residual water on the washed battery case by the blower;

[0026] d. Preheat the battery case after removing the water, and the preheating temperature is 30°C;

[0027] e. Apply antirust agent to the surface of the preheated battery case, wherein the antirust agent includes the following components in weight percentage: phytic acid: 3.5%; sodium citrate: 1%; sodium sulfite: 0.3%; urethane Tropin: 0.2%; Sodium dodecylbenzenesulfonate: 0.5%; Zinc sulfate: 1%; Water, the balance.

[0028] f. Dry the battery case coated with antirust agent at 60°C.

Embodiment 2

[0030] In this embodiment, a battery case surface treatment method includes the following steps:

[0031] a. Put the battery case into an ultrasonic cleaning machine equipped with citric acid solution for cleaning, and degrease the battery case, wherein the concentration of the citric acid solution is 2%;

[0032] b. Washing the battery case after degreasing treatment, wherein the water is deionized water;

[0033] c. Remove the residual water on the washed battery case by the blower;

[0034] d. Preheat the battery case after removing the water, and the preheating temperature is 10°C;

[0035] e. Apply antirust agent to the surface of the preheated battery case, wherein the antirust agent includes the following components in weight percentage: phytic acid: 2.1%; sodium citrate: 0.5%; sodium sulfite: 0.2%; urethane Tropin: 0.05%; Sodium dodecylbenzenesulfonate: 0.2%; Zinc sulfate: 0.5%; Water, the balance.

[0036] f. Dry the battery case coated with antirust agent at 30°C....

Embodiment 3

[0038] In this embodiment, a battery case surface treatment method includes the following steps:

[0039] a. Put the battery case into an ultrasonic cleaning machine equipped with citric acid solution for cleaning, and degrease the battery case, wherein the concentration of the citric acid solution is 3%;

[0040] b. Washing the battery case after degreasing treatment, wherein the water is deionized water;

[0041] c. Remove the residual water on the washed battery case by the blower;

[0042] d. Preheat the battery case after removing the water, and the preheating temperature is 20°C;

[0043] e. Apply antirust agent to the surface of the preheated battery case, wherein the antirust agent includes the following components in weight percentage: phytic acid: 3%; sodium citrate: 0.8%; sodium sulfite: 0.25%; Tropin: 0.1%; Sodium dodecylbenzenesulfonate: 0.3%; Zinc sulfate: 0.7%; Water, the balance.

[0044] f. Dry the battery case coated with antirust agent at 45°C.

[0045] ...

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PUM

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Abstract

The invention discloses a surface processing method of a battery shell. The surface processing method comprises the following steps of (a) degreasing the battery shell; (b) washing the degreased battery shell; (c) removing water remained on the washed battery shell; (d) pre-heating the battery shell of which the water is removed, wherein the pre-heating temperature is 10-30 DEG C; (e) coating an anti-rusting agent on a surface of the pre-heated battery shell; and (f) drying the battery shell of which the surface is coated with the anti-rusting shell, wherein the drying temperature is 30-60 DEG C. The surface processing method of the battery shell has the characteristics of convenience and simplicity and has extremely good processing effect; and moreover, by coating the anti-rusting agent after pre-heating, the anti-rusting agent with relatively high film formation efficiency is selected, thus, the film formation rate is further greatly improved, and the surface processing efficiency of the battery shell is improved.

Description

technical field [0001] The invention relates to a surface treatment method, in particular to a battery case surface treatment method. Background technique [0002] The battery case is one of the important components of the battery, which is mainly used to accommodate the battery core. At present, during the production process of the battery case, the surface needs to be treated to prevent it from being corroded. However, the surface treatment method of the battery case in the existing market is extremely complicated, and the process control is difficult and the treatment efficiency is low. Therefore, urgently need to solve. Contents of the invention [0003] The purpose of the present invention is to address the above problems and provide a battery shell surface treatment method to solve the problems that the surface treatment methods of battery shells in the existing market are extremely complicated, the process control is relatively difficult, and the treatment efficien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02
CPCH01M50/10Y02E60/10
Inventor 陈海燕
Owner 陈海燕