CN-121977850-A - Hydrogen leakage test platform for hydrogen fuel cell automobile

CN121977850ACN 121977850 ACN121977850 ACN 121977850ACN-121977850-A

Abstract

The application relates to the technical field of hydrogen fuel cells and provides a hydrogen leakage test platform of a hydrogen fuel cell automobile, which comprises an explosion-proof box, a hydrogen fuel cell automobile, a test system and a wind tunnel test assembly, wherein the explosion-proof box is suitable for being matched with a transport vehicle to move so as to drive the hydrogen leakage test platform to move to a hydrogenation station to supplement hydrogen fuel, the hydrogen fuel cell automobile is arranged in the explosion-proof box, the test system is arranged in the explosion-proof box and comprises the hydrogen leakage test assembly for generating a hydrogen leakage simulation environment of the hydrogen fuel cell automobile and a gas concentration detection assembly suitable for detecting gas concentration, and the wind tunnel test assembly is arranged in the explosion-proof box and is positioned at the periphery of the hydrogen fuel cell automobile and used for generating air flow simulating automobile running so as to provide a simulation environment of the dynamic running of the hydrogen fuel cell automobile for the hydrogen leakage test. The hydrogen leakage test platform of the hydrogen fuel cell automobile has the advantages of being movable and capable of simulating and testing the hydrogen leakage condition of the automobile in the running state.

Inventors

YAO YONGZHENG
Li Shenao
Pan Aolan

Assignees

中国矿业大学(北京)

Dates

Publication Date: 20260505
Application Date: 20251231

Claims (10)

1. A hydrogen fuel cell automotive hydrogen leak test platform, comprising: The explosion-proof box is suitable for being matched with a transport vehicle to move and is used for driving the hydrogen leakage test platform to move to the hydrogen adding station to supplement hydrogen fuel; The hydrogen fuel cell automobile is arranged in the explosion-proof box; the test system is arranged in the explosion-proof box and comprises a hydrogen leakage test assembly for generating a hydrogen leakage simulation environment of the hydrogen fuel cell automobile and a gas concentration detection assembly suitable for detecting the concentration of gas; The wind tunnel test assembly is arranged in the explosion-proof box and is positioned at the periphery of the hydrogen fuel cell automobile and used for generating air flow simulating the running of the automobile and providing a simulation environment for the dynamic running of the hydrogen fuel cell automobile for a hydrogen leakage test.
2. The hydrogen leakage test platform of the hydrogen fuel cell automobile according to claim 1, wherein the wind tunnel test assembly comprises an air outlet unit, an air suction unit and a fan unit, the fan unit is respectively communicated with the air outlet unit and the air suction unit, the air outlet unit is positioned in front of the hydrogen fuel cell automobile, the air suction unit is positioned behind the hydrogen fuel cell automobile and is used for forming a circulating air flow in the explosion proof box, and the influence of external air flow on the hydrogen leakage test is reduced.
3. The hydrogen leakage test platform of a hydrogen fuel cell automobile according to claim 2, wherein the fan unit comprises a variable frequency fan, the variable frequency fan is located inside the explosion-proof box, and the variable frequency fan is respectively communicated with the air outlet unit and the air suction unit through transmission pipelines.
4. The hydrogen leakage test platform of the hydrogen fuel cell automobile according to claim 3, wherein the air outlet unit comprises an air port frame, the air port frame is arranged on the inner wall of the explosion-proof box, and a rectification grid is arranged in the air port frame and used for carding the turbulent air flow generated by the fan unit smoothly; The air suction unit comprises an air suction cover, the air suction cover is arranged on the inner wall of the explosion-proof box, a filter layer is arranged in the air suction cover, a negative pressure regulating valve is arranged at the output end of the air suction cover, and the opening of the negative pressure regulating valve is regulated according to the change of the rotating speed of the fan unit so as to keep the dynamic balance of air flow circulation.
5. The hydrogen fuel cell automotive hydrogen leakage test platform of claim 1, wherein the hydrogen leakage test assembly comprises: The hydrogen fuel cell system comprises a hydrogen fuel cell automobile, an air outlet assembly, a gas outlet assembly and a control system, wherein the air outlet assembly is used for discharging hydrogen to simulate a hydrogen leakage scene; A hydrogen storage unit for storing hydrogen gas and serving as a hydrogen source; the gas flowmeter is connected between the gas outlet assembly and the hydrogen storage unit and is used for measuring gas flow.
6. The hydrogen fuel cell automotive hydrogen leakage test platform of claim 1, wherein the gas concentration detection assembly comprises: the telescopic mounting rod comprises an outer sleeve and an inner sleeve, the inner sleeve is arranged in the outer sleeve, the inner sleeve is connected with the outer sleeve through threads, and length scale marks are arranged on the outer surfaces of the outer sleeve and the inner sleeve; The gas concentration sensors are arranged in a plurality, and the gas concentration sensors are arranged on the telescopic mounting rod at equal intervals; The telescopic mounting rod can be vertically or horizontally arranged and used for respectively detecting gas concentration distribution of different heights and gas concentration distribution of different horizontal distance positions, and is arranged in the hydrogen fuel cell automobile when in-vehicle hydrogen leakage test is conducted, and is arranged outside the hydrogen fuel cell automobile when out-of-vehicle hydrogen leakage test is conducted.
7. The hydrogen fuel cell car hydrogen leak test platform of claim 1, further comprising an emergency safety system mounted on the flameproof housing, the emergency safety system comprising: The ventilation assembly is arranged on the side wall of the explosion-proof box and used for adjusting the temperature and the humidity in the explosion-proof box and constructing a stable test environment; The spraying components are distributed inside and outside the explosion-proof box and are used for spraying and extinguishing fire; And the nitrogen injection assembly is arranged in the explosion-proof box and is used for injecting nitrogen to dilute the concentration of hydrogen and inhibit combustion when an abnormal hydrogen leakage accident occurs.
8. The hydrogen fuel cell automotive hydrogen leakage test platform of claim 7, wherein the vent assembly comprises: The air outlet is arranged on the side wall of the explosion-proof box; each air outlet is provided with a wind shield, the wind shields are arranged in the inner wall of the explosion-proof box in a sliding manner, a linear push rod mechanism is arranged in the inner wall of the explosion-proof box, the output end of the linear push rod mechanism is connected with the wind shields and drives the wind shields to slide in the inner wall of the explosion-proof box so as to realize the opening and closing of the air outlets; the air conditioner external unit is arranged on the outer wall of the explosion-proof box; the air conditioner inner unit is arranged on the inner wall of the explosion-proof box and is communicated with the air outlet end of the air conditioner outer unit.
9. The hydrogen fuel cell automotive hydrogen leakage test platform of claim 7, wherein the spray assembly comprises: The water storage unit is arranged inside or outside the explosion-proof tank; The spraying pipe network is arranged right above the hydrogen fuel cell automobile, the spraying pipe network is arranged on the inner top surface of the explosion-proof box, and a plurality of spraying heads are arranged on the spraying pipe network; The water pump is arranged between the water storage unit and the spray pipe network and is connected with the water storage unit and the spray pipe network through a water pipe, and a water valve is further arranged between the water pump and the water storage unit; and the water outlet is arranged at the position of the explosion-proof box close to the ground and is communicated with the outside.
10. The hydrogen fuel cell automotive hydrogen leakage test platform of claim 7, wherein the nitrogen injection assembly comprises: A nitrogen storage unit for storing nitrogen; the nitrogen gas shower nozzle, the nitrogen gas shower nozzle is located hydrogen fuel cell car week side, the nitrogen gas storage unit with be connected with the gas flowmeter between the nitrogen gas shower nozzle.

Description

Hydrogen leakage test platform for hydrogen fuel cell automobile Technical Field The application relates to the technical field of hydrogen fuel cells, in particular to a hydrogen leakage test platform of a hydrogen fuel cell automobile. Background When the hydrogen fuel cell car test is carried out, in order to carry out the test under various conditions or switch different test environments, the starting of the test car, the simulation of hydrogen leakage and the scheduling behavior are all required to consume the hydrogen fuel in the test car, and because the hydrogen station is not popularized in a large scale in China and special hydrogen station equipment is required during hydrogen adding, the test car is required to be transported to an original factory or the hydrogen station for hydrogen fuel supplementing, so that the frequent reloading and arrangement work of an indoor test platform is required during the scheduling process of the test car, the time and the labor are consumed, the operation is complex, and particularly when the test site is far away from the hydrogen station, a large amount of scheduling cost is generated and the test progress is stopped, thereby being unfavorable for improving the test efficiency. In addition, the existing test assemblies mostly adopt static leakage simulation, lack an adjustable dynamic wind field system, and cannot reproduce internal hydrogen diffusion rules in a vehicle running state. Therefore, establishing a more efficient, convenient and safe closed hydrogen fuel cell automobile test platform becomes a key requirement in hydrogen safety research. Disclosure of Invention The application aims to provide a hydrogen leakage test platform for a hydrogen fuel cell automobile, which is used for solving or relieving the problems in the prior art. In order to achieve the above object, the present application provides the following technical solutions: the application provides a hydrogen leakage test platform of a hydrogen fuel cell automobile, which comprises the following components: The explosion-proof box is suitable for being matched with a transport vehicle to move and is used for driving the hydrogen leakage test platform to move to the hydrogen adding station to supplement hydrogen fuel; The hydrogen fuel cell automobile is arranged in the explosion-proof box; the test system is arranged in the explosion-proof box and comprises a hydrogen leakage test assembly for generating a hydrogen leakage simulation environment of the hydrogen fuel cell automobile and a gas concentration detection assembly suitable for detecting the concentration of gas; The wind tunnel test assembly is arranged in the explosion-proof box and is positioned at the periphery of the hydrogen fuel cell automobile and used for generating air flow simulating the running of the automobile and providing a simulation environment for the dynamic running of the hydrogen fuel cell automobile for a hydrogen leakage test. Optionally, the wind tunnel test assembly comprises an air outlet unit, an air suction unit and a fan unit, wherein the fan unit is respectively communicated with the air outlet unit and the air suction unit, the air outlet unit is positioned in front of the hydrogen fuel cell automobile, the air suction unit is positioned at the rear of the hydrogen fuel cell automobile and is used for forming circulating air flow in the explosion-proof box, so that the influence of external air flow on a hydrogen leakage test is reduced. Optionally, the fan unit includes the variable frequency fan, the variable frequency fan is located inside the explosion proof box, the variable frequency fan respectively with the air-out unit with the unit that induced drafts passes through transmission pipeline intercommunication. Optionally, the air outlet unit comprises an air port frame, the air port frame is arranged on the inner wall of the explosion-proof box, and a rectification grid is arranged in the air port frame and used for carding the turbulent air flow generated by the fan unit smoothly; The air suction unit comprises an air suction cover, the air suction cover is arranged on the inner wall of the explosion-proof box, a filter layer is arranged in the air suction cover, a negative pressure regulating valve is arranged at the output end of the air suction cover, and the opening of the negative pressure regulating valve is regulated according to the change of the rotating speed of the fan unit so as to keep the dynamic balance of air flow circulation. Optionally, the hydrogen leakage test assembly comprises: The hydrogen fuel cell system comprises a hydrogen fuel cell automobile, an air outlet assembly, a gas outlet assembly and a control system, wherein the air outlet assembly is used for discharging hydrogen to simulate a hydrogen leakage scene; A hydrogen storage unit for storing hydrogen gas and serving as a hydrogen source; the gas flowmeter is connected between the gas outlet assembly and th