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Leakage fusion detection system and method for vehicle-mounted hydrogen supply system

A detection method and hydrogen supply technology are applied in the field of leakage fusion detection system of vehicle-mounted hydrogen supply system, which can solve the problems of hydrogen leakage, endangering human life and property safety, explosion, etc., and achieve the effect of reducing alarms and enhancing accuracy

Active Publication Date: 2021-04-16
合肥龙智机电科技有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current industry as a whole lacks awareness of the safety of fuel cell vehicles
In order to increase the cruising range of fuel cell vehicles, most fuel cell vehicles currently use a 70MPa high-pressure hydrogen storage system, which increases the risk of hydrogen leakage, especially in the case of accidental leakage of the hydrogen storage system (such as vehicle collision leakage, etc.), the flow rate of hydrogen leakage will If it is too fast, the concentration of hydrogen diffusion is high, and if it encounters a spark, it will cause a fire or even an explosion, endangering the safety of personnel and property

Method used

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  • Leakage fusion detection system and method for vehicle-mounted hydrogen supply system
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  • Leakage fusion detection system and method for vehicle-mounted hydrogen supply system

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0026] Such as figure 1 As shown, a leakage fusion detection system of a vehicle-mounted hydrogen supply system of the present invention includes a hydrogen storage bottle 1, a bottle mouth valve 13, a hydrogen supply pipeline, a fuel cell stack 18, an exhaust recovery system, and a leakage fusion detection system.

[0027] The bottle mouth valve 13 is tightly screwed in the bottle mouth of the hydrogen storage bottle 1. The bottle mouth valve 13 is connected with the fuel cell stack 18 through the hydrogen supply pipeline. Along the gas flow direction, the hydrogen supply pipeline is provided with a pressure regulating valve 14, an electromagnetic Valve 15 , second gas mass flow sensor 12 and ultrasonic sensor array 16 .

[0028]The exhaust gas recovery system includes ...

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Abstract

The invention provides a leakage fusion detection system and method for a vehicle-mounted hydrogen supply system. The system comprises a hydrogen storage bottle, a bottle opening valve, a hydrogen supply pipeline, a fuel cell stack, an exhaust recovery system, and a leakage fusion detection system. The leakage fusion detection system comprises a controller, a hydrogen sensor array, a pressure sensor, a temperature sensor, an ultrasonic sensor array, a gas mass flow sensor and an alarm lamp; and according to a grading result of a hydrogen leakage fusion detection criterion II, whether large leakage or small leakage exists in the vehicle-mounted hydrogen supply system or not is determined, then a hydrogen leakage position is judged according to a positioning result, and according to the leakage position, the alarm lamp gives an alarm in different modes. The fusion detection method adopted by the invention can enhance the accuracy of hydrogen leakage detection.

Description

technical field [0001] The invention relates to the technical field of fuel cell vehicles, in particular to a leakage fusion detection system and method for a vehicle-mounted hydrogen supply system. Background technique [0002] Worldwide climate change, environmental pollution and energy shortage are becoming major factors restricting the development of the automobile industry, and the development of new energy vehicles is imperative. The fuel cell is a power generation device that can convert chemical energy into electrical energy. It has the advantages of less moving parts, low noise, low pollution, and high energy conversion, making the fuel cell more suitable as a power source for electric vehicles. The Ministry of Industry and Information Technology, the Ministry of Science and Technology and various local governments have listed hydrogen fuel cell vehicles as key areas of support. However, the current industry as a whole has insufficient awareness of the safety of fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L3/00H01M8/04664
CPCY02T90/40
Inventor 刘书何仁
Owner 合肥龙智机电科技有限公司
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