Protection device and method for thermal runaway of power battery of electric vehicle

A technology for power batteries and electric vehicles, which is applied in the direction of secondary batteries, battery covers/end covers, battery pack components, etc., can solve problems such as electric vehicle safety doubts, and achieve the effect of preventing thermal runaway and preventing thermal diffusion

Pending Publication Date: 2020-05-08
奇瑞新能源汽车股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are currently reports of fire and explosion incidents involving electric vehicles, making the safety of electric vehicles once again questioned by consumers and sounding the alarm for new energy vehicle companies

Method used

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  • Protection device and method for thermal runaway of power battery of electric vehicle
  • Protection device and method for thermal runaway of power battery of electric vehicle
  • Protection device and method for thermal runaway of power battery of electric vehicle

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Embodiment Construction

[0018] Referring to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present invention include the shape, structure, mutual position and connection relationship of each part, the function and working principle of each part, and the manufacturing process of the various components involved. And the method of operation and use, etc., are described in further detail to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.

[0019] The protection device for thermal runaway of electric vehicle power battery proposes protective measures from the three dimensions of battery pack, module, and battery cell to prevent thermal runaway and thermal diffusion. Before thermal runaway causes thermal diffusion, an early warning is issued to reduce personal injury.

[0020] When thermal runaway occurs in a battery cell in the battery ...

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Abstract

The invention discloses a protective device for thermal runaway of a power battery of an electric automobile. A battery shell is arranged outside a battery module, the battery module is composed of abattery cell, an explosion-proof valve is arranged on the side face of the battery shell, a fireproof cover is fixed in the top of the battery shell, and a protective interlayer is directly arranged between the fireproof cover and the battery shell. Thermal runaway can be prevented to the maximum extent, when thermal runaway occurs, thermal diffusion is prevented to the maximum extent, various parameters in the power battery are monitored through the early warning system, an alarm is given to personnel before a fire occurs, and escape time is reserved.

Description

technical field [0001] The invention relates to the field of electric vehicle power batteries, in particular to a protective device and early warning for thermal runaway of the electric vehicle power battery. Background technique [0002] In 2018, the state adjusted the new energy vehicle subsidy policy in terms of cruising range and energy density, encouraging high cruising range and high energy density. In order to strive for high subsidies, various enterprises choose power batteries with high energy density. However, there are reports of electric vehicles catching fire and explosions, making the safety of electric vehicles once again questioned by consumers, and it also sounded the alarm for new energy vehicle companies. High energy density cannot be blindly pursued, and the key issue to be solved is to develop a safe and stable power battery. [0003] Most of the fires of electric vehicles are caused by the thermal diffusion of a single battery after thermal runaway, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/04H01M2/10H01M10/42H01M10/48A62C3/16
CPCH01M10/4207H01M10/482H01M10/488A62C3/16H01M50/155H01M50/147H01M50/20Y02E60/10
Inventor 姚朝华茅卫东张伟韩友国吴洪涛杨玉梅郭巍任印连汪跃中
Owner 奇瑞新能源汽车股份有限公司
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