Fire safety control system for high-pressure hydrogen storage system of new energy vehicle

Abstract

The invention provides a fire safety control system for a high-pressure hydrogen storage system of a new energy vehicle, belongs to the electromechanical technical field, and solves the problem that staff escape safety under a fire environment in the prior art is relatively poor. The system is arranged in a vehicle body of the new energy vehicle, and comprises a controllable steering pressure relief device, a steering drive part, environment induction equipment and an alarm, wherein the controllable steering pressure relief device comprises a hot-melting pressure relief valve, a guide tube anda steering tube; the steering device part is a servo motor; the environment induction equipment comprises a sensor I for detecting whether people is in the vehicle or not, a sensor II for detecting whether staff or the vehicle is on the rear part of the vehicle body or not, a sensor III for detecting the environment temperature of a gas storage bottleneck, and an alarm. The system realizes recognizing according to the environmental condition to control pressure relief and direction in a self-adaptive mode, raises the alarm to pre-alarm, solves the safety escape problem, under the fire environment, of a driver, passengers and personnel outside the vehicle, and remarkably reduces fire risk level of a high-pressure hydrogen storage system of the new energy vehicle.

Description

technical field [0001] The invention belongs to the field of electromechanical technology, and relates to a fire safety control system for high-voltage hydrogen storage of new energy vehicles. Background technique [0002] Hydrogen is usually stored at high pressure in fuel cell vehicles, the pressure can reach 35MPa to 70MPa. The Western Pacific Laboratory of the United States has done a catastrophic explosion experiment of a 35MPa vehicle-mounted high-pressure hydrogen storage bottle. The experimental data shows that the diameter of the fireball is 24 meters, and the ejection of fragments reaches 104 meters. [0003] In order to avoid the consequences of this catastrophic accident, the vehicle-mounted high-pressure hydrogen storage system must be equipped with a thermally-activated pressure relief device TPRD (Thermally-activated Pressure Relief Device). The pressure in the bottle can be released in time to avoid the occurrence of catastrophic explosion accidents. [0...

AI Technical Summary

Problems solved by technology

[0004] Although TPRD has avoided the catastrophic explosion of hydrogen storage cylinders, the side effects of TPRD opening cannot be ignored

Japan Automobile Research Institute conducted a TPRD leak test and showed that after opening downwards, the hydrogen flame will surround the entire body, making it difficult for the driver and passengers to escape safely

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