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

Thermal runaway protection system for battery pack

A protection system and battery pack technology, applied in the direction of batteries, battery pack components, circuits, etc., can solve the problems of insufficient medium volume for isolating the air, surrounding environmental pollution, etc., to reduce hazards, improve the ability to work normally, and avoid explosions Effect

Inactive Publication Date: 2019-11-29
CHONGQING CHANGAN AUTOMOBILE CO LTD
View PDF11 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method can slow down the fire to a certain extent, but there are still the following problems: (1) The amount of the medium used to cool down the battery pack or isolate the air is insufficient, and it is impossible to burn and exhaust the active chemical substances inside the battery pack. , continuous supply; once the medium supply stops, the combustion inside the battery pack will continue
(2) Burning is easy to cause pollution to the surrounding environment

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
  • Thermal runaway protection system for battery pack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] see figure 1 The shown battery pack thermal runaway protection system includes a closed battery pack case 1 and a plurality of battery modules 2 located in the battery pack case 1, and is characterized in that: the battery pack case 1 A plurality of closed and independent combustion chambers 3 are provided, the number of the combustion chambers 3 is the same as the number of the battery modules 2 , and each battery module 2 is located in one combustion chamber 3 . Sealing each battery module 2 with a combustion chamber 3, and sealing all the combustion chambers 3 in the battery pack case 1, can limit the combustion of the battery module 2 within a certain range, avoiding heat transfer or fire spread cause harm to persons or things.

[0022] Each of the combustion chambers 3 is provided with an exhaust pipe 4 communicating with the outside of ...

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 thermal runaway protection system for a battery pack, which comprises a closed battery pack box body and a plurality of battery modules positioned in the battery pack box body, and is characterized in that a plurality of closed and mutually independent combustion chambers are arranged in the battery pack box body, the number of the combustion chambers is the same as thatof the battery modules, and each battery module is positioned in one combustion chamber. Combustion of the battery module can be controlled within a certain range, and harm to people or objects due to heat transfer or fire propagation is avoided. Meanwhile, explosion can be avoided; harmful gas generated by combustion can be purified, and pollution to the environment is reduced.

Description

technical field [0001] The invention relates to an electric vehicle, in particular to a thermal runaway protection system for a battery pack. Background technique [0002] As the key component of electric vehicle energy storage, the safety performance of battery directly affects the safety performance of electric vehicle. With the gradual increase in the number of electric vehicles, fire accidents caused by collisions or management system failures also occur frequently. Due to the high energy density of the battery itself, the occurrence of oxygen evolution reaction after thermal runaway, and the closed structure of the battery pack, it leads to problems such as severe thermal runaway and difficulty in being extinguished after a fire, which will eventually cause great harm to vehicles or personnel. [0003] At present, the response strategy for battery fires is mainly to slow down the fire. The specific implementation methods include cooling and isolating the air. For exam...

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): H01M2/10A62C3/07A62C3/16
CPCA62C3/07A62C3/16H01M2220/20H01M50/20Y02E60/10
Inventor 史方圆陈贤青禹慧丽崔泰松赵会
Owner CHONGQING CHANGAN AUTOMOBILE 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