Hydrogen fuel cell fixed power generation device hydrogen leakage detection system and method

Abstract

The invention discloses a hydrogen leakage detection system for a hydrogen fuel cell fixed power generation device, which is characterized in that the detection system comprises a plurality of hydrogen fuel cells (2) arranged in a hydrogen related area (1) and a high-voltage power distribution device (4) arranged in a high-voltage equipment area (3), the side wall of the hydrogen related area (1) is connected with a hydrogen header pipe (5), and the side wall of the hydrogen related area (1) is connected with the high-voltage power distribution device (4). A hydrogen flow meter (6) is arranged on the hydrogen header pipe (5), the outlet end of the hydrogen header pipe (5) is communicated with the inlet ends of a plurality of hydrogen branch pipes (8) through pipe joints (7), the plurality of hydrogen branch pipes (8) are respectively communicated with hydrogen inlets on the plurality of hydrogen fuel cells (2) one by one, and an air header pipe (9) is further connected to the side wall of the hydrogen-related area (1). And the air main pipe (9) is respectively communicated with the air inlets on the plurality of hydrogen fuel cells (2) one by one through a plurality of air branch pipes (10).

Description

Technical Field

[0001] The present invention relates to the field of new energy, and in particular to a hydrogen leakage detection system for a hydrogen fuel cell fixed power generation device, and a method for hydrogen leakage detection using the system. Background Art

[0002] Hydrogen energy is a clean and efficient secondary energy source with many advantages such as wide source, high calorific value, storability and convertibility. It is an important component of the future clean energy system. Fuel cells are one of the best ways to utilize hydrogen energy. They have been widely used in automobiles, rail transportation, ships, mobile power generation, fixed power generation and other fields.

[0003] When working, hydrogen fuel cells consume hydrogen and generate electricity, so hydrogen needs to be continuously input during the operation process. However, hydrogen is a flammable gas, and there is a risk of explosion, especially if it is in a closed space.

[0004] In order to avoid safety accidents, current hydrogen fuel cells are equipped with hydrogen concentration sensors in the working environment to detect hydrogen leakage so as to intervene immediately when hydrogen leakage occurs. However, the traditional hydrogen fuel cell monitoring system has a single function and only detects the hydrogen concentration around the hydrogen fuel cell, neglecting the transmission pipeline and other links. At the same time, the traditional monitoring system only issues an alarm after detecting an abnormality to remind the staff to intervene. There is a certain dangerous period before the staff actually arrives at the scene to deal with it, and it is impossible to achieve the purpose of automatically reducing risks.

[0005] Therefore, a method or device capable of solving the above problems is now needed. Summary of the invention

[0006] The present invention aims to solve the above-mentioned deficiencies in the prior art and proposes a hydrogen leakage detection system with a simple structure, ingenious design, and reasonable layout, which can detect hydrogen concentration in multiple links and positions and automatically take corresponding actions to reduce the risks during the operation of hydrogen fuel cells and ensure safety. A method for hydrogen leakage detection using the system is also disclosed.

[0007] The technical solution of the present invention is: a hydrogen leakage detection system for a hydrogen fuel cell fixed power generation device, characterized in that: the detection system comprises a plurality of hydrogen fuel cells 2 arranged in a hydrogen-related area 1, and a high-voltage power distribution device 4 arranged in a high-voltage equipment area 3, A hydrogen main pipe 5 is connected to the side wall of the hydrogen-related area 1, and a hydrogen flowmeter 6 is arranged on the hydrogen main pipe 5. The outlet end of the hydrogen main pipe 5 is connected to the inlet end of multiple hydrogen branch pipes 8 through a pipe joint 7, and the multiple hydrogen branch pipes 8 are respectively connected to the hydrogen inlets of multiple hydrogen fuel cells 2 one by one. An air main pipe 9 is also connected to the side wall of the hydrogen-related area 1, and the air main pipe 9 is respectively connected to the air inlets of multiple hydrogen fuel cells 2 one by one through multiple air branch pipes 10. A tail exhaust pipeline 11 is also connected to the side wall of the hydrogen-related area 1, and the tail exhaust pipeline 11 is connected to the tail exhaust ports of multiple hydrogen fuel cells 2. A first exhaust fan 12 is arranged on the top plate of the hydrogen-related area 1. A second row of fans 13 is provided on the top plate of the high voltage equipment area 3. A first hydrogen concentration sensor 14 is arranged on the top plate of the shell of the hydrogen fuel cell 2, a second hydrogen concentration sensor 15 is arranged on the pipe joint 7, a third hydrogen concentration sensor 16 is arranged on the inner side of the top plate of the hydrogen-related area 1, a fourth hydrogen concentration sensor 17 is arranged on the inner side of the top plate of the high-voltage equipment area 3, and a fifth hydrogen concentration sensor 18 is arranged on the outer side of the top plates of the hydrogen-related area 1 and the high-voltage equipment area 3. The hydrogen fuel cell 2, high-voltage power distribution device 4, hydrogen flow meter 6, first exhaust fan 12, second exhaust fan 13, first hydrogen concentration sensor 14, second hydrogen concentration sensor 15, third hydrogen concentration sensor 16, fourth hydrogen concentration sensor 17 and fifth hydrogen concentration sensor 18 are all uniformly controlled by a control system.

[0008] A method for detecting hydrogen leakage in a hydrogen fuel cell stationary power generation device, characterized in that the method is performed according to the following steps: The hydrogen flow meter 6 detects the hydrogen flow entering the hydrogen main pipe 5, and the first hydrogen concentration sensor 14, the second hydrogen concentration sensor 15, the third hydrogen concentration sensor 16, the fourth hydrogen concentration sensor 17 and the fifth hydrogen concentration sensor 18 detect the hydrogen concentration in real time. If the detection result is normal, the hydrogen fuel cell system works normally, and the control system sends the operating data of the system to the remote cloud platform for storage. If the test result is abnormal, the abnormal data will be classified and dealt with accordingly in the following ways: If the hydrogen flow exceeds the maximum limit, the control system sends a signal to all hydrogen fuel cells 2 to control them to stop suddenly, and sends abnormal data and emergency stop information to the remote cloud platform, and issues an abnormal alarm at the same time. If the hydrogen flow exceeds the maximum limit, the control system sends a signal to all hydrogen fuel cells 2 to control them to reduce load and shut down, and then detect the hydrogen flow value. If the hydrogen flow value returns to normal, the hydrogen fuel cell 2 is controlled to shut down normally. If it is still in an over-limit state, the hydrogen fuel cell 2 is controlled to stop urgently, and the abnormal data and emergency stop information are sent to the remote cloud platform, and an abnormal alarm is issued at the same time. If the first hydrogen concentration sensor 14 detects that the hydrogen concentration is abnormal and exceeds the threshold, the hydrogen fuel cell 2 corresponding to the first hydrogen concentration sensor 14 is shut down urgently, and the other hydrogen fuel cells 2 are shut down by load reduction. If the hydrogen concentration is abnormal but does not exceed the threshold, the hydrogen fuel cell 2 corresponding to the first hydrogen concentration sensor 14 is shut down by load reduction, and the other hydrogen fuel cells 2 operate normally. At the same time, the detection result of the fifth hydrogen concentration sensor 18 is checked. If the hydrogen concentration is abnormal and exceeds the threshold, the first row of fans 12 and the second row of fans 13 are turned off. If the hydrogen concentration is abnormal but does not exceed the threshold, the first row of fans 12 and the second row of fans 13 operate normally, and the abnormal data and fan operating status information are sent to the remote cloud platform, and an abnormal alarm is issued. If the second hydrogen concentration sensor 15 detects that the hydrogen concentration is abnormal and exceeds the threshold, all hydrogen fuel cells 2 are controlled to stop urgently. If the hydrogen concentration is abnormal but does not exceed the threshold, all hydrogen fuel cells 2 are controlled to reduce load and shut down. At the same time, the detection result of the fifth hydrogen concentration sensor 18 is checked. If the hydrogen concentration is abnormal and exceeds the threshold, the first row of fans 12 and the second row of fans 13 are turned off. If the hydrogen concentration is abnormal but does not exceed the threshold, the first row of fans 12 and the second row of fans 13 work normally, and the abnormal data and fan working status information are sent to the remote cloud platform, and an abnormal alarm is issued. If the third hydrogen concentration sensor 16 detects that the hydrogen concentration is abnormal and exceeds the threshold, all hydrogen fuel cells 2 are controlled to stop urgently. If the hydrogen concentration is abnormal but does not exceed the threshold, all hydrogen fuel cells 2 are controlled to reduce load and shut down. At the same time, the detection result of the fifth hydrogen concentration sensor 18 is checked. If the hydrogen concentration is abnormal and exceeds the threshold, the first row of fans 12 and the second row of fans 13 are turned off. If the hydrogen concentration is abnormal but does not exceed the threshold, the first row of fans 12 and the second row of fans 13 work normally, and the abnormal data and fan working status information are sent to the remote cloud platform, and an abnormal alarm is issued. If the fourth hydrogen concentration sensor 17 detects that the hydrogen concentration is abnormal and exceeds the threshold, all hydrogen fuel cells 2 are controlled to stop urgently. If the hydrogen concentration is abnormal but does not exceed the threshold, all hydrogen fuel cells 2 are controlled to reduce load and shut down. At the same time, the detection result of the fifth hydrogen concentration sensor 18 is checked. If the hydrogen concentration is abnormal and exceeds the threshold, the first row of fans 12 and the second row of fans 13 are turned off. If the hydrogen concentration is abnormal but does not exceed the threshold, the first row of fans 12 and the second row of fans 13 work normally, and the abnormal data and fan working status information are sent to the remote cloud platform, and an abnormal alarm is issued. If the fifth hydrogen concentration sensor 18 detects that the hydrogen concentration is abnormal and exceeds the threshold, all hydrogen fuel cells 2 are controlled to stop urgently. If the hydrogen concentration is abnormal but does not exceed the threshold, all hydrogen fuel cells 2 are controlled to reduce load and shut down, and then the first row of fans 12 and the second row of fans 13 are turned off, and the abnormal data and fan working status information are sent to the remote cloud platform, and an abnormal alarm is issued at the same time.

[0009] Compared with the prior art, the present invention has the following advantages: The hydrogen leakage detection system of the hydrogen fuel cell fixed power generation device of this structural form has a simple structure, ingenious design and reasonable layout. It is designed to solve the problem of hydrogen leakage that may exist in the use of traditional hydrogen fuel cell power generation devices. A special structure is designed. It detects the hydrogen concentration of multiple links in the working process of the hydrogen fuel cell system through multiple hydrogen concentration sensors set in different positions and different spaces. At the same time, it superimposes the detection of the flow rate and flow rate change of the hydrogen input pipeline, and comprehensively monitors the flow and leakage of hydrogen in real time. It can automatically perform corresponding operations when abnormalities are found, so as to reduce risks and protect the safety of hydrogen fuel cell operation. In addition, the manufacturing process of this detection system is simple and the manufacturing cost is low. Therefore, it can be said that it has many advantages and is particularly suitable for promotion and application in this field. Its market prospects are very broad. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0011] Figure 2 It is a system flow chart of an embodiment of the present invention. DETAILED DESCRIPTION

[0012] The specific implementation of the present invention will be described below with reference to the accompanying drawings. Figure 1 , Figure 2 As shown: A hydrogen leakage detection system for a hydrogen fuel cell stationary power generation device, which includes a plurality of hydrogen fuel cells 2 arranged in a hydrogen-related area 1, and a high-voltage power distribution device 4 arranged in a high-voltage equipment area 3, A hydrogen main pipe 5 is connected to the side wall of the hydrogen-related area 1, and a hydrogen flowmeter 6 is arranged on the hydrogen main pipe 5. The outlet end of the hydrogen main pipe 5 is connected to the inlet end of multiple hydrogen branch pipes 8 through a pipe joint 7, and the multiple hydrogen branch pipes 8 are respectively connected to the hydrogen inlets of multiple hydrogen fuel cells 2 one by one. An air main pipe 9 is also connected to the side wall of the hydrogen-related area 1, and the air main pipe 9 is respectively connected to the air inlets of multiple hydrogen fuel cells 2 one by one through multiple air branch pipes 10. A tail exhaust pipeline 11 is also connected to the side wall of the hydrogen-related area 1, and the tail exhaust pipeline 11 is connected to the tail exhaust ports of multiple hydrogen fuel cells 2. A first exhaust fan 12 is arranged on the top plate of the hydrogen-related area 1. A second row of fans 13 is provided on the top plate of the high voltage equipment area 3. A first hydrogen concentration sensor 14 is arranged on the top plate of the shell of the hydrogen fuel cell 2, a second hydrogen concentration sensor 15 is arranged on the pipe joint 7, a third hydrogen concentration sensor 16 is arranged on the inner side of the top plate of the hydrogen-related area 1, a fourth hydrogen concentration sensor 17 is arranged on the inner side of the top plate of the high-voltage equipment area 3, and a fifth hydrogen concentration sensor 18 is arranged on the outer side of the top plates of the hydrogen-related area 1 and the high-voltage equipment area 3. The hydrogen fuel cell 2, high-voltage power distribution device 4, hydrogen flow meter 6, first exhaust fan 12, second exhaust fan 13, first hydrogen concentration sensor 14, second hydrogen concentration sensor 15, third hydrogen concentration sensor 16, fourth hydrogen concentration sensor 17 and fifth hydrogen concentration sensor 18 are all uniformly controlled by a control system.

[0013] During the operation of the hydrogen fuel cell fixed power generation device, the hydrogen flow meter 6 detects the hydrogen flow entering the hydrogen main pipe 5, and the first hydrogen concentration sensor 14, the second hydrogen concentration sensor 15, the third hydrogen concentration sensor 16, the fourth hydrogen concentration sensor 17 and the fifth hydrogen concentration sensor 18 detect the hydrogen concentration in real time. If the detection result is normal, the hydrogen fuel cell system is working normally, and the control system will send the operating data of the system to the remote cloud platform for storage. If the test result is abnormal, the abnormal data will be classified and dealt with accordingly in the following ways: If the hydrogen flow exceeds the maximum limit, the control system sends a signal to all hydrogen fuel cells 2 to control them to stop suddenly, and sends abnormal data and emergency stop information to the remote cloud platform, and issues an abnormal alarm at the same time. If the hydrogen flow exceeds the maximum limit, the control system sends a signal to all hydrogen fuel cells 2 to control them to reduce load and shut down, and then detect the hydrogen flow value. If the hydrogen flow value returns to normal, the hydrogen fuel cell 2 is controlled to shut down normally. If it is still in an over-limit state, the hydrogen fuel cell 2 is controlled to stop urgently, and the abnormal data and emergency stop information are sent to the remote cloud platform, and an abnormal alarm is issued at the same time. If the first hydrogen concentration sensor 14 detects that the hydrogen concentration is abnormal and exceeds the threshold, the hydrogen fuel cell 2 corresponding to the first hydrogen concentration sensor 14 is shut down urgently, and the other hydrogen fuel cells 2 are shut down by load reduction. If the hydrogen concentration is abnormal but does not exceed the threshold, the hydrogen fuel cell 2 corresponding to the first hydrogen concentration sensor 14 is shut down by load reduction, and the other hydrogen fuel cells 2 operate normally. At the same time, the detection result of the fifth hydrogen concentration sensor 18 is checked. If the hydrogen concentration is abnormal and exceeds the threshold, the first row of fans 12 and the second row of fans 13 are turned off. If the hydrogen concentration is abnormal but does not exceed the threshold, the first row of fans 12 and the second row of fans 13 operate normally, and the abnormal data and fan operating status information are sent to the remote cloud platform, and an abnormal alarm is issued. If the second hydrogen concentration sensor 15 detects that the hydrogen concentration is abnormal and exceeds the threshold, all hydrogen fuel cells 2 are controlled to stop urgently. If the hydrogen concentration is abnormal but does not exceed the threshold, all hydrogen fuel cells 2 are controlled to reduce load and shut down. At the same time, the detection result of the fifth hydrogen concentration sensor 18 is checked. If the hydrogen concentration is abnormal and exceeds the threshold, the first row of fans 12 and the second row of fans 13 are turned off. If the hydrogen concentration is abnormal but does not exceed the threshold, the first row of fans 12 and the second row of fans 13 work normally, and the abnormal data and fan working status information are sent to the remote cloud platform, and an abnormal alarm is issued. If the third hydrogen concentration sensor 16 detects that the hydrogen concentration is abnormal and exceeds the threshold, all hydrogen fuel cells 2 are controlled to stop urgently. If the hydrogen concentration is abnormal but does not exceed the threshold, all hydrogen fuel cells 2 are controlled to reduce load and shut down. At the same time, the detection result of the fifth hydrogen concentration sensor 18 is checked. If the hydrogen concentration is abnormal and exceeds the threshold, the first row of fans 12 and the second row of fans 13 are turned off. If the hydrogen concentration is abnormal but does not exceed the threshold, the first row of fans 12 and the second row of fans 13 work normally, and the abnormal data and fan working status information are sent to the remote cloud platform, and an abnormal alarm is issued. If the fourth hydrogen concentration sensor 17 detects that the hydrogen concentration is abnormal and exceeds the threshold, all hydrogen fuel cells 2 are controlled to stop urgently. If the hydrogen concentration is abnormal but does not exceed the threshold, all hydrogen fuel cells 2 are controlled to reduce load and shut down. At the same time, the detection result of the fifth hydrogen concentration sensor 18 is checked. If the hydrogen concentration is abnormal and exceeds the threshold, the first row of fans 12 and the second row of fans 13 are turned off. If the hydrogen concentration is abnormal but does not exceed the threshold, the first row of fans 12 and the second row of fans 13 work normally, and the abnormal data and fan working status information are sent to the remote cloud platform, and an abnormal alarm is issued. If the fifth hydrogen concentration sensor 18 detects that the hydrogen concentration is abnormal and exceeds the threshold, all hydrogen fuel cells 2 are controlled to stop urgently. If the hydrogen concentration is abnormal but does not exceed the threshold, all hydrogen fuel cells 2 are controlled to reduce load and shut down, and then the first row of fans 12 and the second row of fans 13 are turned off, and the abnormal data and fan working status information are sent to the remote cloud platform, and an abnormal alarm is issued at the same time.

Claims

1. A hydrogen leak detection system for a hydrogen fuel cell stationary power generation device, characterized in that: The detection system comprises a plurality of hydrogen fuel cells (2) arranged in a hydrogen-related area (1), and a high-voltage power distribution device (4) arranged in a high-voltage equipment area (3). A hydrogen main pipe (5) is connected to the side wall of the hydrogen-related area (1), and a hydrogen flowmeter (6) is arranged on the hydrogen main pipe (5). The outlet end of the hydrogen main pipe (5) is connected to the inlet end of a plurality of hydrogen branch pipes (8) through a pipe joint (7), and the plurality of hydrogen branch pipes (8) are respectively connected to the hydrogen inlets on the plurality of hydrogen fuel cells (2) one by one. An air main pipe (9) is also connected to the side wall of the hydrogen-related area (1), and the air main pipe (9) is respectively connected to the air inlets on the plurality of hydrogen fuel cells (2) one by one through a plurality of air branch pipes (10). A tail exhaust pipeline (11) is also connected to the side wall of the hydrogen-related area (1), and the tail exhaust pipeline (11) is connected to the tail exhaust ports of the plurality of hydrogen fuel cells (2). A first exhaust fan (12) is arranged on the top plate of the hydrogen-related area (1). A second row of fans (13) is provided on the top plate of the high-voltage equipment area (3). A first hydrogen concentration sensor (14) is arranged on the top plate of the housing of the hydrogen fuel cell (2), a second hydrogen concentration sensor (15) is arranged on the pipe joint (7), a third hydrogen concentration sensor (16) is arranged on the inner side of the top plate of the hydrogen-related area (1), a fourth hydrogen concentration sensor (17) is arranged on the inner side of the top plate of the high-voltage equipment area (3), and a fifth hydrogen concentration sensor (18) is arranged on the outer side of the top plates of the hydrogen-related area (1) and the high-voltage equipment area (3). The hydrogen fuel cell (2), the high-voltage power distribution device (4), the hydrogen flow meter (6), the first exhaust fan (12), the second exhaust fan (13), the first hydrogen concentration sensor (14), the second hydrogen concentration sensor (15), the third hydrogen concentration sensor (16), the fourth hydrogen concentration sensor (17) and the fifth hydrogen concentration sensor (18) are all uniformly controlled by a control system.

2. A method for detecting hydrogen leakage in a hydrogen fuel cell stationary power generation device, characterized in that: The method described is carried out according to the following steps: The hydrogen flow meter (6) detects the flow of hydrogen entering the hydrogen main pipe (5), and the first hydrogen concentration sensor (14), the second hydrogen concentration sensor (15), the third hydrogen concentration sensor (16), the fourth hydrogen concentration sensor (17) and the fifth hydrogen concentration sensor (18) detect the hydrogen concentration in real time. If the detection result is normal, the hydrogen fuel cell system is operating normally, and the control system sends the operating data of the system to the remote cloud platform for storage. If the test result is abnormal, the abnormal data will be classified and dealt with accordingly in the following ways: If the hydrogen flow exceeds the maximum limit, the control system sends a signal to all hydrogen fuel cells (2) to control them to stop suddenly, and sends abnormal data and emergency stop information to the remote cloud platform, while issuing an abnormal alarm. If the hydrogen flow exceeds the maximum limit, the control system sends a signal to all hydrogen fuel cells (2) to control them to reduce load and shut down, and then detects the hydrogen flow value. If the hydrogen flow value returns to normal, the hydrogen fuel cell (2) is controlled to shut down normally. If it is still in the over-limit state, the hydrogen fuel cell (2) is controlled to stop urgently, and the abnormal data and emergency stop information are sent to the remote cloud platform, and an abnormal alarm is issued at the same time. If the first hydrogen concentration sensor (14) detects that the hydrogen concentration is abnormal and exceeds a threshold value, the hydrogen fuel cell (2) corresponding to the first hydrogen concentration sensor (14) is shut down urgently, and the other hydrogen fuel cells (2) are shut down by reducing the load; if the hydrogen concentration is abnormal but does not exceed the threshold value, the hydrogen fuel cell (2) corresponding to the first hydrogen concentration sensor (14) is shut down by reducing the load, and the other hydrogen fuel cells (2) operate normally; at the same time, the detection result of the fifth hydrogen concentration sensor (18) is checked; if the hydrogen concentration is abnormal and exceeds the threshold value, the first row of fans (12) and the second row of fans (13) are shut down; if the hydrogen concentration is abnormal but does not exceed the threshold value, the first row of fans (12) and the second row of fans (13) operate normally, and the abnormal data and fan operating status information are sent to a remote cloud platform, and an abnormal alarm is issued at the same time. If the second hydrogen concentration sensor (15) detects that the hydrogen concentration is abnormal and exceeds the threshold, all hydrogen fuel cells (2) are controlled to stop urgently; if the hydrogen concentration is abnormal but does not exceed the threshold, all hydrogen fuel cells (2) are controlled to reduce load and shut down, and the detection result of the fifth hydrogen concentration sensor (18) is checked at the same time; if the hydrogen concentration is abnormal and exceeds the threshold, the first row of fans (12) and the second row of fans (13) are turned off; if the hydrogen concentration is abnormal but does not exceed the threshold, the first row of fans (12) and the second row of fans (13) operate normally, and the abnormal data and fan operating status information are sent to a remote cloud platform, and an abnormal alarm is issued at the same time. If the third hydrogen concentration sensor (16) detects that the hydrogen concentration is abnormal and exceeds the threshold, all hydrogen fuel cells (2) are controlled to stop urgently; if the hydrogen concentration is abnormal but does not exceed the threshold, all hydrogen fuel cells (2) are controlled to reduce load and shut down, and the detection result of the fifth hydrogen concentration sensor (18) is checked at the same time; if the hydrogen concentration is abnormal and exceeds the threshold, the first row of fans (12) and the second row of fans (13) are turned off; if the hydrogen concentration is abnormal but does not exceed the threshold, the first row of fans (12) and the second row of fans (13) operate normally, and the abnormal data and fan operating status information are sent to the remote cloud platform, and an abnormal alarm is issued at the same time. If the fourth hydrogen concentration sensor (17) detects that the hydrogen concentration is abnormal and exceeds the threshold, all hydrogen fuel cells (2) are controlled to stop urgently; if the hydrogen concentration is abnormal but does not exceed the threshold, all hydrogen fuel cells (2) are controlled to reduce load and shut down, and the detection result of the fifth hydrogen concentration sensor (18) is checked at the same time; if the hydrogen concentration is abnormal and exceeds the threshold, the first row of fans (12) and the second row of fans (13) are turned off; if the hydrogen concentration is abnormal but does not exceed the threshold, the first row of fans (12) and the second row of fans (13) operate normally, and the abnormal data and fan operating status information are sent to the remote cloud platform, and an abnormal alarm is issued at the same time. If the fifth hydrogen concentration sensor (18) detects that the hydrogen concentration is abnormal and exceeds the threshold, all hydrogen fuel cells (2) are controlled to stop urgently. If the hydrogen concentration is abnormal but does not exceed the threshold, all hydrogen fuel cells (2) are controlled to reduce load and shut down, and then the first row of fans (12) and the second row of fans (13) are turned off, and the abnormal data and fan working status information are sent to a remote cloud platform, and an abnormal alarm is issued at the same time.

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