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Testing method for the effect of aluminum-plastic film encapsulation

A detection method and technology of aluminum-plastic film, which are applied in measuring devices, mechanical devices, instruments, etc., to achieve the effects of high controllability, simple implementation process, and elimination of missed inspections

Active Publication Date: 2020-05-19
TIANJIN JUYUAN NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] According to another search, there is no report on the method of packaging stability detection using the combination of cutting technology and image measurement equipment.

Method used

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  • Testing method for the effect of aluminum-plastic film encapsulation
  • Testing method for the effect of aluminum-plastic film encapsulation
  • Testing method for the effect of aluminum-plastic film encapsulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] like figure 1 , image 3 As shown, a 113μm aluminum-plastic film packaging effect detection method, the steps are as follows:

[0047] (1) Preparation of measurement samples: Cut the 113 μm aluminum-plastic case plastic-sealed by pressurized hot-melt method longitudinally at a position 3 mm away from the battery body along the melting direction with a phase cutting knife. Then the cut sample is clamped with a 1mm thick PP board, and the fixed sample is first cut 10 times with a thickness of 50 μm on a flat push microtome, and then cut 10 times with a thickness of 10 μm. A sample with a smooth upper surface was obtained.

[0048] (2) Sample measurement: put the prepared sample under a high-magnification image measuring instrument to observe and measure with a magnification of 500 times. Use the ruler on the equipment to measure the thickness of the melted glue.

[0049] (3) Establish a standard expression: different melt thicknesses are obtained by changing the packa...

Embodiment 2

[0055] like figure 2 , Figure 4 As shown, a 67μm aluminum-plastic film packaging effect detection method, the steps are as follows:

[0056] (1) Preparation of measurement samples: Cut the 67 μm aluminum-plastic case plastic-sealed by pressurized hot-melt method longitudinally at a position 4 mm away from the battery body along the melting direction with a phase cutting knife. Then the cut sample is clamped with a 1mm thick PP board, and the fixed sample is first cut 10 times with a thickness of 50 μm on a flat push microtome, and then cut 10 times with a thickness of 10 μm. A sample with a smooth upper surface was obtained.

[0057] (2) Sample measurement: put the prepared sample under a high-magnification image measuring instrument to observe and measure with a magnification of 750 times. Use the ruler on the equipment to measure the thickness of the melted glue.

[0058] (3) Establish a standard expression: different melt thicknesses are obtained by changing the packa...

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Abstract

The invention relates to a detection method for packaging effect of an aluminum plastic film. The method includes the steps of: 1) sample preparation: vertically cutting an aluminum plastic shell froma plastic package, formed in a pressed hot-melting manner, with a photograph cutter in a glue-melting direction, fixing the cut sample with plastic, and performing micro-stepping sectioning to the fixed sample on a horizontal pushing type cutting machine, thus preparing the sample; 2) sample measurement: observing and measuring the sample under a high-magnification image measurement instrument toobtain glue melting thickness; 3) establishment of a standard expression equation: according to different aluminum plastic shells and packaging parameters, obtaining a comparison table between different glue melting thicknesses and pulling force values, and according to data on the table, obtaining a relationship curve and further a relationship expression equation; 4) analysis of measurement results: observing glue melting consistency and glue melting thickness, and substituting the glue melting thickness and aluminum plastic packaging data with corresponding thickness into the standard expression equation, thus obtaining packaging pulling force strength. In the method, the sample is easy to prepare and measurement is convenient, and data reliability is excellent.

Description

technical field [0001] The invention relates to a detection technology for battery packaging, in particular to a detection method for the packaging effect of aluminum-plastic film. Background technique [0002] In recent years, with the widespread use of consumer electronic products, the safety and stability of batteries that provide power energy have attracted more and more attention. In order to improve the safety of consumer electronic products, people use aluminum-plastic cases to make soft-pack batteries, which greatly reduces the danger of batteries. However, the stability of the battery packaged in aluminum-plastic case is strictly tested. [0003] Since the aluminum plastic case used in lithium-ion batteries uses thermoplastic packaging to fix the internal active material, and the internal active material has the characteristic of reacting with air under charging conditions, it is necessary to ensure the compactness of its packaging. In addition, the internal press...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N19/00
CPCG01N19/00
Inventor 陈英龙郑辰辰高润明代克章李海峰伍绍中
Owner TIANJIN JUYUAN NEW ENERGY TECH CO LTD
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