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

Composite explosion-proof valve, cover plate assembly and battery

A technology of explosion-proof valve and cover plate, which is applied in the direction of secondary battery, battery pack parts, and secondary battery repair/maintenance. Effect

Active Publication Date: 2018-02-06
BYD CO LTD
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problem that the existing voltage-controlled explosion-proof valve still has the risk of battery combustion or explosion, the present invention provides a composite explosion-proof valve, cover assembly and battery

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
  • Composite explosion-proof valve, cover plate assembly and battery
  • Composite explosion-proof valve, cover plate assembly and battery
  • Composite explosion-proof valve, cover plate assembly and battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0050] This example will specifically explain the battery, the cover plate assembly and the composite explosion-proof valve 6 disclosed in the present invention.

[0051] Such as figure 1As shown, this example discloses a battery, the battery includes a case 2, a pole core and a cover plate assembly, the cover plate assembly and the case 2 form a closed space, and the pole core is installed in the closed space. The battery in this example may be a lithium-ion battery, or other types of nickel batteries or lead-acid batteries. The pole core is formed by winding or stacking positive electrode sheets, separators, and negative electrode sheets, which is known to the public. Wherein, the above-mentioned cover plate assembly includes a cover plate body 1 on which a compound explosion-proof valve 6 is installed. Wherein, generally, the first electrode assembly 3 and the second electrode assembly 4 with different polarities are insulated and installed on the cover plate assembly. T...

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

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a composite explosion-proof valve, a cover plate assembly and a battery so as to solve the problem that battery combustion or explosion risk still exists in conventional pressure-controlled explosion-proof valves. The composite explosion-proof valve comprises a temperature-controlled explosion-proof membrane and a pressure-controlled explosion-proof membrane, wherein a flameretardant structure is arranged between the temperature-controlled explosion-proof membrane and the pressure-controlled explosion-proof membrane. According to the battery, the cover plate assembly and the composite explosion-proof valve, the temperature-controlled explosion-proof membrane and the pressure-controlled explosion-proof membrane are mounted on the composite explosion-proof valve, andthe flame retardant structure is arranged between the temperature-controlled explosion-proof membrane and the pressure-controlled explosion-proof membrane. Therefore, that composite explosion-proof valve can release / relieve pressure timely when the battery is abnormal, external oxygen is effectively isolated from entering, occurrence of battery combustion and explosion is prevented, and secondarydisaster and larger abnormality are avoided.

Description

technical field [0001] The invention relates to the battery field, in particular to an explosion-proof valve installed on a battery cover assembly. Background technique [0002] With the gradual development of science and technology, the safety of a large number of batteries used in automobiles, energy storage devices, electronic equipment, etc. has attracted more and more attention. The air pressure increases significantly, which may cause the battery to explode if measures are not taken in time. [0003] For this reason, in order to prevent the occurrence of battery explosion, a voltage-controlled explosion-proof valve (or safety valve) is generally installed on the battery cover plate. Existing pressure-controlled explosion-proof valves generally include one or more layers of pressure-controlled explosion-proof membranes. When the internal air pressure of the battery exceeds the opening pressure of the explosion-proof valve, the explosion-proof valve opens to release th...

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): H01M2/12H01M10/42H01M50/342
CPCH01M10/4235H01M50/3425Y02E60/10
Inventor 蒋露霞胡世超杨珂利程晗朱建华朱燕
Owner BYD 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