Method and apparatus for sealing polymer lithium ionic cell

A technology for lithium-ion batteries and sealing equipment, which is applied in the direction of secondary batteries, battery pack components, non-aqueous electrolyte storage batteries, etc. It can solve the problems of poor sealing effect product ratio, improve sealing performance, reduce gas swelling and leakage problem effect

Inactive Publication Date: 2011-05-25
德朗能(张家港)动力电池有限公司 +2
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a sealing method and equipment for a polymer lithium ion battery, which mainly solves the technical problem of the use of sealant in the existing sealing method, and still has a certain proportion of products with poor sealing effect, and can improve the sealing of the battery Performance, sealing qualification rate, especially the sealing performance during long-term storage and use, to reduce the occurrence of battery inflation and leakage problems

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
  • Method and apparatus for sealing polymer lithium ionic cell
  • Method and apparatus for sealing polymer lithium ionic cell
  • Method and apparatus for sealing polymer lithium ionic cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] see image 3 , The invention provides a sealing method for a polymer lithium ion battery. It controls the heating temperature of the equipment to reach a stable value in a certain way, and heats the aluminum-plastic composite film 4 through two metal heating strips 5. The metal heating strips 5 are located on both sides of the battery, while maintaining a certain pressure, clamping the internal The aluminum-plastic composite film 4 of the fluid 3 acts for a period of time to conduct heat to the inside, so that the sealant 2 on the current collector 3 softens and melts, and releases the metal heating strip 5. After cooling, the sealant 2 seals the current collector 3 and Aluminum-plastic composite film 4 bonding. In such a process and equipment, the heat diffuses from the outside to the inside, and there is a temperature gradient. To make the temperature of the sealant reach the melting point, the aluminum-plastic composite film has to withstand a relatively higher temp...

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 relates to a seal method and the equipment of polymer lithium ion battery. The method heat the aluminum-model compound membrane through two metal heating strip, the metal heating strip located on both sides of battery, simultaneously maintained certain pressure, clamped the aluminum-model compound membrane which includes the collection fluid in interior, after affecting the period time, heat conduct to the interior and make the sealant on the collection fluid to soft melting, release metal heating strip, when after cooling, the sealant adhered the collection fluid and the aluminum-model compound membrane. The heat-seal equipment has two metal heating strips, uses different temperature control, pressure control, response time control system, may independently control its temperature and the pressure and the response time. It mainly solved the sealant use in the existing seal method, still had certain technical question in bad seal effect product proportion, enhanced sealing property, the seal qualified rate of battery, specially the sealing property in the long-term storage and the use process, reduced gas bulge and leakage question of battery.

Description

technical field [0001] The invention relates to the technical field of polymer lithium ion batteries, in particular to a sealing method and equipment for polymer lithium ion batteries. Background technique [0002] Lithium-ion batteries were developed and commercialized by Japan's SONY company in the 1990s. Its appearance is a leap in the history of secondary battery development. Lithium-ion batteries have developed rapidly due to their light weight, high capacity, high working voltage, long service life and no pollution. Its global sales have exceeded the sum of nickel-metal hydride and nickel-cadmium batteries. In recent years, my country has made great progress in the industrialization of lithium-ion batteries. In 2003, the total output exceeded 250 million. In 2005, it reached a production scale of 600 million. It is catching up with and surpassing the world's advanced level. Polymer lithium-ion battery is a kind of lithium-ion battery. It is different from lithium-ion ...

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 Patents(China)
IPC IPC(8): H01M2/08H01M10/38H01M10/40H01M10/058H01M50/183
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 吴江峰陈瑶高朋坤张鹏
Owner 德朗能(张家港)动力电池有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap