Battery pack with automatic fire extinguishing function

An automatic fire extinguishing and battery pack technology, which is applied to secondary batteries, battery pack components, circuits, etc., can solve problems such as the breakage of tabs under force, achieve uniform force, improve safety, and reduce the effect of lithium deposition

Pending Publication Date: 2020-12-11
ZHEJIANG NARADA POWER SOURCE CO LTD +1
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the existing lithium-ion battery pack is installed as a gap assembly, which easily causes the tabs to be broken due to vibration during use, and the fire extinguishing devices of the lithium-ion battery pack are provided for fire extinguishing outside the pack. A battery pack with simple structure, low cost, improved safety, certain heat insulation, timely prevention of flame spread, and automatic fire extinguishing function

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
  • Battery pack with automatic fire extinguishing function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides a battery pack with a fire extinguishing function, including an upper case and a lower case that are detachably connected. After adjusting the compression rate of the felt, immerse the glass felt in the liquid fire extinguishing agent, absorb it for 30 minutes, take it out for use, and the compression rate is 30%; The casing is fixed to the upper casing, and the output end of the cell pack 4 is drawn out to complete the installation of the battery pack.

Embodiment 2

[0033] This embodiment provides a battery pack with a fire extinguishing function, including an upper case and a lower case that are detachably connected. After adjusting the compression rate of the felt, immerse the glass felt in the liquid fire extinguishing agent, absorb it for 40 minutes and take it out for use, the compression rate is 50%; then wrap the glass felt on the surface of the battery pack and put it into the upper case, and put the lower The casing is fixed to the upper casing, and the output end of the cell pack 4 is drawn out to complete the installation of the battery pack.

Embodiment 3

[0035]This embodiment provides a battery pack with a fire extinguishing function, including a detachably connected upper case and a lower case. First, a glass mat with a porosity of 95% and a pore diameter of 100 μm is used. After adjusting the compression rate of the felt, immerse the glass felt in the liquid fire extinguishing agent, absorb it for 60 minutes, take it out for use, and the compression rate is 5%; then wrap the glass felt on the surface of the battery pack and put it into the upper case, and put the lower The casing is fixed to the upper casing, and the output end of the cell pack 4 is drawn out to complete the installation of the battery pack.

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
pore sizeaaaaaaaaaa
pore sizeaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to view more

Abstract

The invention relates to a battery pack which is simple in structure and low in cost, improves safety, has a certain heat insulation function, can timely stop flame spreading and has an automatic fireextinguishing function. The battery pack comprises a detachably connected shell and at least one battery cell group located in the shell, and the battery cell group is wrapped with a filling felt with a buffer function; and the filling felt adsorbs a fire extinguishing agent. According to the invention, tight assembly of battery cells in the lithium battery pack is realized, lithium precipitationof the battery can be reduced, the service life of the battery is prolonged, the battery cells can be fixed to prevent tabs from being pulled due to vibration, and certain resilience and compressibility can counteract the adverse effect of expansion and contraction of pole piece active substances on the battery due to charging and discharging of the battery, so that the battery maintains certaincompression force, and the stress is uniform; and fire fighting in the lithium battery pack is achieved, fire fighting action is more timely, surrounding type fire extinguishing is achieved, certain heat insulation is achieved, and spreading of flames can be stopped in time, so the fire hazard of the battery pack is reduced, and safety is improved.

Description

technical field [0001] The invention relates to the technical field of battery packs, in particular to a battery pack with simple structure, low cost, improved safety, certain heat insulation, timely prevention of flame spread, and automatic fire extinguishing function. Background technique [0002] Batteries, as an essential thing for modern people's work and life, are used in various fields. Nowadays, safety hazards caused by batteries are not uncommon, and most of the reasons are caused by battery fires. Lithium batteries are a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. With the development of science and technology, lithium batteries have become the mainstream now. China is the world's largest lithium battery production and manufacturing base, the second largest lithium battery producer and exporter, and lithium batteries have accounted for 40% of the global market share. In v...

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 Applications(China)
IPC IPC(8): H01M2/10H01M2/34H01M10/0525H01M10/613H01M10/654H01M10/6569H01M10/658A62C3/16A62C31/00
CPCA62C3/16A62C31/00H01M10/0525H01M10/613H01M10/654H01M10/6569H01M10/658Y02E60/10
Inventor 党志敏刘桃松王羽平陈冬丁平胡雨萌蒋岚李敏张焱陈建
Owner ZHEJIANG NARADA POWER SOURCE CO LTD
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