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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 poor heat dissipation, fire and explosion, and achieve the effect of improving safety protection performance and reducing safety risks

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 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 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

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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 the fireproof and explosion-proof device of the present invention can be applied to vehicles such as electric bicycles, electric motorcycles, electric automobiles and the like.

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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, a cell protective sheath and an external shell. The cell set is arranged in the cell protective sheath and the cell protective sheath is disposed in the external shell. A thermal-insulation layer is disposed between an inner surface of the external shell and the cell protective sheath. A clearance between the cell protective sheath and the thermal-insulation layer is filled with a fire extinguish material. 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): H01M2/10H01M10/42A62C3/16A62C3/07H01M50/20H01M50/249
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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