Lithium battery having fire-proof and explosion-proof device and electrical vehicle equipped with same

An explosion-proof device and lithium battery technology, applied in the field of electric vehicles, can solve problems such as fire and explosion, poor heat dissipation, etc., and achieve the effect of reducing safety risks and improving safety protection performance

Active Publication Date: 2014-12-17
ZHEJIANG CHAOWEI CHUANGYUAN INDUSTRAIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Lithium batteries are very easy to cause fire and explosion due to problems such as short circuit and poor heat dissipation. However, the existing fire and explosion protection measures for lithium batteries can only improve some problems to a limited extent and cannot solve the problem com

Method used

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  • Lithium battery having fire-proof and explosion-proof device and electrical vehicle equipped with same
  • Lithium battery having fire-proof and explosion-proof device and electrical vehicle equipped with same
  • Lithium battery having fire-proof and explosion-proof device and electrical vehicle equipped with same

Examples

Experimental program
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Example Embodiment

[0021] Examples:

[0022] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, an electric vehicle is provided with a lithium battery with a fire-proof and explosion-proof device. The lithium battery includes a battery cell group 1, a housing 3, the battery cell group 1 is placed in the housing 3, the battery cell group 1 and The gap of the shell 3 is filled with bicarbonate powder 11 that can be thermally decomposed and release carbon dioxide as a temperature control fire extinguishing material. In this embodiment, it is sodium bicarbonate. The shell 3 is made of aluminum, and the shell 3 is a closed approximately rectangular parallelepiped. , Consists of a shell, an upper cover, and a bottom cover. The top cover of the housing 3 is provided with a dredging hole, preferably a pressure relief valve 4 is provided on the dredging hole. The pressure relief valve 4 includes a valve body 5 and a movable valve block 6. A valve cover 7 is threadedly connected to the valve bod...

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Abstract

The invention discloses a lithium battery having a fire-proof and explosion-proof device. The lithium battery includes a cell set and an external shell. The cell set is arranged in the external shell. A clearance between the cell set and the external shell is filled with a fire extinguish material which can be subject to an endothermic reaction and generates carbon dioxide. The external shell is provided with a discharging hole. In the device, during a use process of the lithium battery, the fire extinguish material, which can be subject to an endothermic reaction when being heated and generates carbon dioxide, is used as a working medium for performing heat absorption and oxygen insulation to the battery. In addition, an internal pressure of the battery can be regulated timely. By the comprehensive protective method above, accidents, such as ignition, explosion and the like, can be effectively prevented so that safe risk of the lithium battery can be greatly reduced.

Description

technical field [0001] The invention relates to a lithium battery with a fire-proof and explosion-proof device and its application products, more specifically, it relates to a lithium battery with a fire-proof and explosion-proof device and an electric vehicle using the battery. Background technique [0002] Due to the non-renewable energy crisis and serious environmental pollution, the world has accelerated the development of green and high-performance lithium batteries. The application field of lithium batteries has extended from the field of digital products to the fields of transportation power, energy storage, aerospace, and communication backup power. The demand for batteries has also grown from hundreds of mAh to hundreds or even thousands of amp hours. With the increase in capacity, safety issues will become more difficult to control. Therefore, the safety of high-capacity lithium batteries is now the research of many companies. If the worldwide problem of fire and ...

Claims

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Application Information

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IPC IPC(8): H01M2/10H01M10/42A62C3/16A62C3/07
CPCA62C3/07A62C3/16H01M10/0525H01M10/52H01M50/20H01M50/383H01M50/394Y02E60/10
Inventor 孙延先任宁李爱明杨晓旭张海飞
Owner ZHEJIANG CHAOWEI CHUANGYUAN INDUSTRAIAL
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