Electric car lithium-ion power battery box fire extinguishing mechanism and implementation method

Abstract

The invention relates to an implementation method of an electric car lithium-ion power battery box fire extinguishing mechanism. The implementation method comprises the following steps that when thermal runaway occurs to lithium-ion power batteries in a lithium-ion power battery box and a fire is caused, drivers and conductors open a car body sealing cover and a blocking end cover of a fire extinguishing agent filling port to connect a fire extinguishing device containing a fire extinguishing agent with the fire extinguishing agent filling port and starts the fire extinguishing device. The fire extinguishing agent is fed into the lithium-ion power battery box from the fire extinguishing agent filling port via a fire extinguishing agent filling pipe under the action of a driving medium of the fire extinguishing agent and covers the spaces between the multiple lithium-ion power batteries and the interior of the lithium-ion power battery box totally to achieve the purposes of fire extinguishing and battery thermal runaway suppression. Through the implementation method, and the lithium-ion fire can be effectively put out in time to provide a guarantee for people escape and vehicle safety protection. Meanwhile, the measures and the method for putting out the electric car lithium-ion power battery fire are provided for electric car production units, electric car marketing units, electric car users and rescuers.

Description

technical field [0001] The invention relates to a fire extinguishing mechanism, in particular to a fire extinguishing mechanism for a lithium ion power battery box of an electric vehicle. Background technique [0002] With the continuous advancement of my country's national strategy for new energy vehicles, the number of new energy vehicles in China continues to rise. According to the data released by China Association of Automobile Manufacturers and other organizations, in the first half of 2018, the output of new energy vehicles in my country reached 413,000, and the sales volume reached 412,000, a year-on-year increase of 94.9% and 111.5% respectively. The automobile industry continues to maintain rapid development. However, during the promotion and application of new energy vehicles, many fire accidents occurred. According to the electric vehicle safety report statistics released by the Electric Vehicle 100, there were 14 electric vehicle fire accidents in China in 2015...

AI Technical Summary

Problems solved by technology

[0003] Lithium-ion batteries are the most accident-prone and fire-causing components in electric vehicles. Lithium-ion batteries are usually installed in battery boxes. Different electric vehicles have different types and quantities of batteries in battery boxes. There are dozens of batteries at least, and thousands of batteries, and the battery box is usually installed in the chassis of the car. Once the battery catches fire, the battery will burn inside the battery box. Since the battery box is completely isolated from the outside, even if the firefighting Rescue personnel and equipment arrive at the scene of the accident, and fire extinguishing agents or other fire extinguishing measures cannot enter the inside of the battery box. Rescuers are helpless and can only wait for the battery to burn out

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