Testing method for packaging effect of battery cell packaging bag

A technology of battery cells and testing methods, which is applied in the direction of material analysis through observation of the influence of chemical indicators, analysis through chemical reactions of materials, and use of material absorption and weighing. It can solve the problems affecting the packaging of aluminum-plastic packaging bags. The actual judgment of the effect, the difference in the electrical performance of the battery cell, etc., to achieve the effect of improving the overall production efficiency, simple method, and reducing the overall production cost

Inactive Publication Date: 2011-03-09
TIANJIN LISHEN BATTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current method of testing battery packaging performance is: sealing the physical battery cells in an aluminum-plastic packaging bag, fully charging the cells, and collecting electrical properties during storage. However, this method is affected by too many extern

Method used

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  • Testing method for packaging effect of battery cell packaging bag
  • Testing method for packaging effect of battery cell packaging bag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In order to investigate the packaging effect of the battery cell aluminum-plastic packaging bag at different packaging widths, the following operations can be performed: weigh the quality of the double-sided sealed aluminum-plastic packaging bag as m 1 , put the chemical substance color-changing silica gel in a dry environment, and weigh the total mass as m 2 (Note, in order to achieve a more ideal test effect, it is best to keep the same quality of chemical substances loaded in the same batch of tests, or the same number of silica gel particles loaded). Then the quality of the color-changing silica gel actually packed into the aluminum-plastic packaging bag is: m 2 -m 1 .

[0038] Seal the color-changing silicone according to the standard packaging process (that is, the other side is packaged), and form an aluminum-plastic packaging bag to package the sample. Divide the sealed samples into several groups, the sample size of each group is preferably more than 32, and...

Embodiment 2

[0040] In order to investigate the packaging effect of the battery cell aluminum-plastic packaging bag at different packaging widths, the following operations can be performed: weigh the quality of the double-sided sealed aluminum-plastic packaging bag as m 1 , put the chemical substance anhydrous copper sulfate in a dry environment, and weigh the total mass as m 2 (Note, in order to achieve a more ideal test effect, it is best to keep the same quality of chemical substances loaded in the same batch of tests, or the same number of silica gel particles loaded). Then, the quality of the anhydrous copper sulfate actually packed into the aluminum-plastic packaging bag is: m 2 -m 1 .

[0041] Seal the chemical substance according to the standard packaging process (that is, the other side is packaged), and form an aluminum-plastic packaging bag to package the sample. Divide the sealed samples into several groups, each group should have more than 32 samples, and package each group...

Embodiment 3

[0043] In order to investigate the performance of aluminum-plastic packaging bags of different models or specifications (such as different thicknesses or different manufacturers), the following operations can be performed: weigh the quality of the double-sided sealed aluminum-plastic packaging bags as m 1 , put the chemical substance color-changing silica gel in a dry environment, and weigh the total mass as m 2 (Note, in order to achieve a more ideal test effect, it is best to keep the same quality of chemical substances loaded in the same batch of tests, or the same number of silica gel particles loaded). Then the quality of the color-changing silica gel actually put into the aluminum-plastic packaging bag is: m 2 -m 1 .

[0044] Seal the chemical substance according to the standard packaging process (that is, the other side is packaged), and form an aluminum-plastic packaging bag to package the sample. Divide the sealed samples into several groups, and the sample size of...

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PUM

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Abstract

The invention discloses a testing method for the packaging effect of a battery cell packaging bag, which comprises the following steps: putting a chemical substance which absorbs water easily into the battery cell packaging bag to be tested for the packaging effect, and then packaging the battery cell packaging bag; and weighing the mass of the packaged battery cell packaging bag at set intervals, and counting the mass variation of the battery cell packaging bag to know the packaging effect of the battery cell packaging bag. In the testing method for the packaging effect of the battery cell packaging bag disclosed by the invention, the chemical substance which absorbs water easily is packaged in the battery packaging bag, and the packaging effect of the battery packaging bag is determined by testing the mass variation of the chemical substance, thereby realizing the purposes of conveniently and effectively testing the packaging effect of the battery packaging bag, being favorable for reducing the overall production cost of the battery, improving the overall production efficiency of the battery, and obtaining great production practice significance.

Description

technical field [0001] The invention relates to the technical field of battery testing, in particular to a method for testing the packaging effect of battery cell packaging bags. Background technique [0002] At present, polymer lithium-ion batteries have the advantages of high specific energy, many cycle times, and long storage time. They are not only widely used in portable electronic devices such as mobile phones, digital cameras, and laptop computers, but also widely used in electric vehicles, In terms of large and medium-sized electric equipment such as electric bicycles and electric tools, the requirements for the quality pass rate of polymer lithium-ion batteries are getting higher and higher. [0003] For flexible packaging polymer lithium-ion batteries, they use aluminum-plastic packaging bags as the outer packaging material of the battery. However, the packaging problem of aluminum-plastic packaging bags has always been an important factor that hinders the later e...

Claims

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Application Information

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IPC IPC(8): G01N5/02G01N21/78
Inventor 杜晨树程君张旺
Owner TIANJIN LISHEN BATTERY
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