Unlock instant, AI-driven research and patent intelligence for your innovation.

Cleaning method for residual liquid around injection holes of lithium batteries

A lithium battery liquid injection and liquid injection hole technology, which is applied in the direction of cleaning methods using gas flow, cleaning methods and utensils, battery pack parts, etc., can solve the problem of damaging the health of personnel, corroding the shell, and reducing the adhesion of dispensing glue , Low cleaning efficiency and other issues, to achieve the effect of reducing human injury, high production efficiency, and avoiding direct contact

Inactive Publication Date: 2016-06-22
NANJING GUOXUAN BATTERY CO LTD
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the electrolyte is a corrosive substance, if the residual liquid remaining in the liquid injection hole is not cleaned, it will have adverse effects such as reducing the adhesive force of the dispensing glue, damaging the health of personnel, and corroding the shell.
The traditional method of cleaning it is mainly manual cleaning with cleaning agent or alcohol, which has disadvantages such as unclean cleaning affecting the adhesion of the curing glue and the shell, water and other cleaning components being brought into the battery, damaging the body, and low cleaning efficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cleaning method for residual liquid around injection holes of lithium batteries
  • Cleaning method for residual liquid around injection holes of lithium batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Select 50 lithium-ion batteries with a model of 20000mAh to be glued after sealing, and clean them respectively according to the following steps:

[0022] (1) Use dry nitrogen to pre-purge the residual liquid around the liquid injection hole of the lithium-ion battery for 1 second;

[0023] (2) After pre-purging, use a laser intensity of 50w and a cleaning area of ​​25mm 2 Perform laser cleaning for 1s;

[0024] (3) After purging the lithium-ion battery case with dry nitrogen for 1 second, perform glue dispensing and curing.

Embodiment 2

[0026] Select 50 20000mAh batteries to be glued after sealing, and clean them according to the following steps:

[0027] (1) Use dry compressed air to pre-purge the residual liquid around the liquid injection hole of the lithium-ion battery for 3 seconds;

[0028] (2) Use a laser intensity of 80w and a cleaning area of ​​100mm 2 Perform laser cleaning for 3s;

[0029] (3) Pass in dry compressed air to purge the lithium-ion battery case for another 3 seconds, and then carry out dispensing and curing.

Embodiment 3

[0031] Select 50 20000mAh batteries to be glued after sealing, and clean them according to the following steps:

[0032] (1) Use dry compressed air to pre-purge the residual liquid around the liquid injection hole of the lithium-ion battery for 2 seconds;

[0033] (2) Use a laser intensity of 80w and a cleaning area of ​​80mm 2 Perform laser cleaning for 2s;

[0034] (3) Infuse dry nitrogen gas to purge the lithium-ion battery case for another 2 seconds, and then carry out dispensing and curing.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a cleaning method for residual liquid around injection holes of lithium batteries. The cleaning method comprises the steps of pre-purging the residual liquid around the injection holes of the lithium batteries through dry gas; laser-cleaning shells of the lithium batteries through lasers; and purging the shells of the lithium batteries through the dry gas again and then carrying out adhesive dispensing and solidifying. According to the cleaning method, a lot of residual liquid is purged through the dry gas, then laser cleaning is adopted, impurities are prevented from entering the batteries, the shells are prevented from being corroded, damage to the human body is reduced, and the production efficiency is improved.

Description

technical field [0001] The invention mainly relates to the technical field of lithium ion batteries, in particular to a method for cleaning residual liquid in a liquid injection hole of a lithium battery. Background technique [0002] Lithium-ion batteries, like lead-acid batteries, are chemical power sources, and are mainly composed of positive electrode materials, negative electrode materials, diaphragms, electrolytes, and casings. Among them, the electrolyte is injected through the liquid injection hole reserved in the casing, and a certain amount of residual liquid will remain around the liquid injection hole. Since the electrolyte is a corrosive substance, if the residual liquid remaining in the liquid injection hole is not cleaned, it will have adverse effects such as reducing the adhesive force of the dispensing glue, damaging the health of personnel, and corroding the shell. The traditional method of cleaning it is mainly manual cleaning with cleaning agent or alc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B08B5/02B08B7/00H01M2/36H01M50/60
CPCB08B5/02B08B7/0035H01M50/60Y02E60/10
Inventor 刘炎金朱庆俊姚汪兵
Owner NANJING GUOXUAN BATTERY CO LTD