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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 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: 2017-12-29
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 Fire and Explosion Causes of Lithium Batteries Lithium Batteries with Fireproof and Explosion-proof Devices with Enhanced Fireproof and Explosion-proof Functions and Electric Vehicles Using the Batteries

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

Examples

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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 preferably filled with bicarbonate powder 11 as a fire extinguishing material, which is sodium bicarbonate in this embodiment, and the battery sheath 2 is made of ABS, and the shell 3 is made of aluminum. The shell 3 is a closed approximate cuboid, which is composed of a shell, an upper cover and a bottom cover. There is a dredging hole on the top cover of the shell 3. There is a relief valve 4 on it. 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, and the center of the valve...

Embodiment 2

[0026] The cell sheath 2 is made of aluminum, and the rest are the same as in 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 battery pack, a battery sheath and a shell, the battery pack is placed in the battery sheath, and the battery sheath is placed in the shell. A heat insulating layer is arranged between the inner surface of the shell and the cell sheath, the gap between the cell sheath and the heat insulating layer is filled with fire extinguishing material, and dredging holes are provided on the shell. 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): H01M2/10H01M10/42A62C3/16A62C3/07H01M50/20H01M50/249
CPCA62C3/07A62C3/16H01M10/52H01M10/0525H01M50/20H01M50/383H01M50/394Y02E60/10
Inventor 孙延先任宁李爱明杨晓旭张海飞
Owner ZHEJIANG CHAOWEI CHUANGYUAN INDUSTRAIAL
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