Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Determination technology for encapsulation quality of aluminum plastic film of polymer lithium-ion battery

A lithium-ion battery and polymer technology, which is applied in the manufacture of secondary batteries, non-aqueous electrolyte batteries, and electrolyte batteries, can solve problems affecting the quality of polymer lithium-ion batteries and the inability to effectively control the quality of aluminum-plastic film packaging, etc., to achieve The effect of high accuracy, simple method and convenient operation

Inactive Publication Date: 2018-10-02
SHENZHEN GPC ENERGY GRP CO LTD
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the problem that the detection method in the prior art cannot effectively control the packaging quality of the same type of aluminum-plastic film of the same manufacturer but different batches, thereby affecting the quality of polymer lithium-ion batteries, and provides a simple, fast, Effective Quality Judgment Process for Aluminum-plastic Film Packaging of Polymer Lithium-ion Batteries

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Take a sponge with the same shape as the polymer lithium-ion battery cell, and fix the positive and negative tabs on the sponge at the same position as the positive and negative tabs on the polymer lithium-ion battery cell; it is used for packaging the polymer The aluminum-plastic film of the polymer lithium-ion battery cell is Japanese DNP company, and another batch is used to pack the aluminum-plastic film of the above-mentioned polymer lithium-ion battery cell. According to the heat-sealing process parameters for making the polymer lithium-ion battery, It is made into an aluminum-plastic film bag that matches the sponge body and has an electrolyte injection port reserved on the top. The heat-sealing process parameters of the polymer lithium-ion battery are: heat-sealing pressure 0.25 Mpa, heat-sealing temperature 180°C, heat-sealing time 3.5 S; Put the sponge body into the aluminum-plastic film bag, inject 1.5mol / L sodium chloride electrolyte into the aluminum-plastic...

Embodiment 2

[0024] Take a sponge with the same shape as the polymer lithium-ion battery cell, and fix the positive and negative tabs on the sponge at the same position as the positive and negative tabs on the polymer lithium-ion battery cell; it is used for packaging the polymer The aluminum-plastic film of the polymer lithium-ion battery cell is Japanese DNP company, and another batch is used to pack the aluminum-plastic film of the above-mentioned polymer lithium-ion battery cell. According to the heat-sealing process parameters for making the polymer lithium-ion battery, It is made into an aluminum-plastic film bag that matches the sponge body and has an electrolyte injection port reserved on the top. The heat-sealing process parameters of the polymer lithium-ion battery are: packaging pressure 0.2Mpa, packaging temperature 175°C, and heat-sealing time 3S; The sponge is put into an aluminum-plastic film bag, and 1mol / L of sodium chloride electrolyte is injected along the electrolyte inj...

Embodiment 3

[0026]The implementation process and results of Example 3 are exactly the same as Example 2, except that the standard for adjusting the heat-sealing process parameters in the negative direction is: the heat-sealing temperature is reduced by 10°C, the heat-sealing pressure is reduced by 0.07Mpa, and the heat-sealing time is shortened 0.3S, after the heat-sealing process parameters are adjusted, the aluminum-plastic film can be guaranteed to have qualified heat-sealing quality.

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

No PUM Login to View More

Abstract

The invention provides a determination technology for encapsulation quality of aluminum plastic film of a polymer lithium-ion battery. The other batch of aluminum plastic film which is about to be applied to the polymer lithium-ion battery is prepared into a simulation battery according to heat-sealing technological parameters of the aluminum plastic film of the previous batch, then the simulationbattery is subjected to extrusion testing and simulation testing, and according to testing results, the heat-sealing quality of the aluminum plastic film is judged comprehensively; then, according tothe heat-sealing quality, the heat-sealing technological parameters are pre-adjusted to guarantee that the aluminum plastic film has qualified encapsulation quality, the aim of controlling the encapsulation quality of the aluminum plastic film of the polymer lithium-ion battery is achieved accordingly, and the problem is solved that the difference of the encapsulation quality of the aluminum plastic film of different batches exists, and accordingly the quality of the polymer lithium-ion battery is influenced. According to the determination technology, the heat-sealing technological parametersare adjusted according to the extrusion testing results and insulation performance testing results, and the method is easy and quick to use and high in accuracy.

Description

technical field [0001] The invention relates to the technical field of lithium-ion battery manufacturing, in particular to a process for judging the quality of polymer lithium-ion battery aluminum-plastic film packaging. Background technique [0002] Polymer lithium-ion batteries need to be packaged with aluminum-plastic film after the tabs are aligned. The packaging principle of the aluminum-plastic film is to use external heating to make the heat-sealing material in the heat-sealing part of the aluminum-plastic film into a viscous state. With the help of packaging equipment The mold pressure makes the upper and lower layers of heat-sealing materials and tabs fused together, and maintains a certain strength and good sealing performance after cooling. Therefore, the quality of heat-sealing will directly affect the service life of the packaging. Heat-sealing temperature, time and pressure are the basic packaging process parameters. After the aluminum-plastic film used for pol...

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
IPC IPC(8): H01M10/058H01M10/0525
CPCH01M10/0525H01M10/058Y02E60/10Y02P70/50
Inventor 左春洲王勇军李国敏
Owner SHENZHEN GPC ENERGY GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com