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Lithium battery with fire-proof and explosion-proof device and electric vehicle using the battery

An explosion-proof device and lithium battery technology, applied to small-sized batteries/battery packs, large-sized batteries/battery packs, secondary batteries, etc., can solve problems such as fire and explosion, poor heat dissipation, etc., to reduce safety risks and improve The effect of safety protection performance

Active Publication Date: 2018-05-04
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 comprehensively. In order to overcome this defect, the present invention provides a method for Causes of Lithium Battery Fire and Explosion Lithium Battery with Fireproof and Explosion-proof Device with Enhanced Fireproof and Explosion-proof Function and Electric Vehicle Using the Battery

Method used

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  • Lithium battery with fire-proof and explosion-proof device and electric vehicle using the battery
  • Lithium battery with fire-proof and explosion-proof device and electric vehicle using the battery
  • Lithium battery with fire-proof and explosion-proof device and electric vehicle using the battery

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Embodiment 1

[0023] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, an electric vehicle uses a lithium battery with a fireproof and explosion-proof device. The lithium battery includes a battery pack 1, a battery sheath 2 and a casing 3, and the battery pack 1 is placed in the battery sheath 2 Inside, the battery sheath 2 is placed in the shell 3, and the gap between the battery sheath 2 and the shell 3 is filled with bicarbonate powder 11 as a fire extinguishing material, which is sodium bicarbonate in this embodiment, and the battery sheath 2 is used Made of ABS material, the shell 3 is made of aluminum. The shell 3 is a closed approximate cuboid consisting of a shell, an upper cover and a bottom cover. The top cover of the shell 3 is provided with a dredging hole, preferably on the dredging hole A relief valve 4 is provided. The pressure relief valve 4 includes a valve body 5 and a movable valve block 6. The valve body 5 is threadedly connected with a valve cover 7, an...

Embodiment 2

[0026] The cell sheath 2 is made of aluminum, and the shock-absorbing and flame-retardant material is flame-retardant acrylic fiber. All the other are with embodiment 1.

[0027] The lithium battery with fireproof and explosion-proof device of the present invention can be applied to vehicles such as electric bicycles, electric motorcycles, electric vehicles and the like.

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Abstract

The invention discloses a lithium battery with a fireproof and explosion-proof device. The lithium battery includes a cell group, a cell sheath and a casing. The cell group is placed in the cell sheath, and the cell sheath is placed in the casing. The gap between the cell sheath and the shell is filled with fire extinguishing materials that can undergo endothermic reactions and generate carbon dioxide. The gap between the cell sheath and the cell pack is filled with shock-absorbing and flame-retardant materials, and the shell is provided with dredging holes. . During the use of lithium batteries, this device uses fire extinguishing materials that can undergo endothermic reactions and generate carbon dioxide when heated as the working medium to absorb heat and isolate oxygen for the batteries, and can adjust the internal pressure of the batteries in time. By adopting the above comprehensive protection methods, It can effectively prevent accidents such as fire and explosion, and greatly reduce the safety risk of battery use.

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 e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/02H01M2/12B60K1/04H01M50/10H01M50/14H01M50/30
CPCH01M10/0525B60K1/04H01M50/10H01M50/383H01M50/333Y02E60/10
Inventor 孙延先任宁李爱明杨晓旭张海飞
Owner ZHEJIANG CHAOWEI CHUANGYUAN INDUSTRAIAL
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