Check patentability & draft patents in minutes with Patsnap Eureka AI!

Seal structure for lithium ion cell

A lithium-ion battery and sealing structure technology, which is applied to structural parts, battery cover/end cover, battery pack parts, etc., can solve the problems of poor welding strength and poor air tightness, and achieve protection from damage and good sealing , the effect of ensuring safety

Inactive Publication Date: 2005-06-15
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
View PDF2 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] In order to overcome the shortcomings of poor airtightness and poor welding strength in the prior art due to poor sealing of the electrolyte injection hole, the purpose of the present invention is to provide a battery with good airtightness that can prevent moisture from entering the battery. At the same time, the lithium-ion battery sealing structure that can avoid electrolyte leakage, another object of the present invention is to provide a lithium-ion battery sealing structure with firm combination, high bonding strength and good safety

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
  • Seal structure for lithium ion cell
  • Seal structure for lithium ion cell
  • Seal structure for lithium ion cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] Please also refer to figure 1 and Figure 5 In this embodiment, a square lithium-ion battery is taken as an example. The sealing structure of the lithium-ion battery of the present invention includes a tank body 80 and a cover plate 110 sealed and welded to the tank body 80 . Wherein, a positive terminal 106 is formed in the middle of the cover plate 110 , and a liquid injection hole 112 is opened on two sides of the positive terminal 106 and an explosion-proof device 102 is sealed and installed.

[0028] The tank body 80 is square, and its interior can accommodate the positive pole, negative pole, separator and electrolyte of the battery. The tank body 80 has a square opening (not numbered in the figure).

[0029] The cover plate 110 has a size and shape suitable for the square opening, and can seal and cover the opening by...

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 disclosed seal structure for improving tightness and security includes a metal tank body and an upper cover. The upper cover is welded onto the metal tank body combined as an integrated body. A hole for injecting electrolyte is setup on the upper cover. A sealing element is inserted and plugged onto the said hole, and the sealing element welded onto the upper cover is combined as an integrated body. The sealing element and injection hole can form screw thread couple further in order to reinforce tightness and bonding strength. The seal structure guarantees favorable tightness for injection hole. Moreover, the sealing element can support larger pressure, prevent weld from breakage so as to raise security.

Description

【Technical field】 [0001] The invention relates to a battery packaging structure, in particular to a lithium ion battery sealing structure using liquid electrolyte. 【Background technique】 [0002] In recent years, the functions of computers, communication electronic products, and consumer electronic products have become more and more powerful, and their external dimensions have become smaller and lighter, so battery products with high capacity and small size are popular. Lithium-ion batteries, in particular, have the characteristics of large capacity, high energy density, and high voltage, and their market share in mobile phones, notebook computers, digital cameras and other products continues to rise. [0003] Lithium-ion batteries are based on lithium cobalt oxide (LiCoO 2 ), lithium nickel oxide (LiNiO 2 ) or lithium manganese oxide (LiMn 2 o 4 ) and the like are positive electrode active materials, and lithium metal, lithium alloys or carbon materials are used as nega...

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): H01M50/147H01M50/566H01M50/636
CPCY02E60/10
Inventor 黄文正黄全德
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com