Fuel cell safety control system based on MQTT

Abstract

The utility model relates to a fuel cell safety control system based on MQTT. A hydrogen inlet of a fuel cell stack is selectively communicated with a hydrogen supply pipeline or a suppression gas supply pipeline, an air inlet of the fuel cell stack is selectively communicated with an air supply pipeline or a suppression gas supply pipeline, and a hydrogen exhaust port of a fuel cell is selectively connected with a gas-liquid separator or communicated with a vacuum pump. An exhaust port of the gas-liquid separator is connected with a hydrogen supply pipeline; the fuel cell stack switches on a temperature regulator; the MQTT information acquisition unit is connected with the MQTT communication gateway, the MQTT communication gateway is connected with the fuel cell upper control machine, and the MQTT information acquisition unit is electrically connected with the fuel cell controller; the MQTT communication gateway is connected with the fuel cell controller; the fuel cell controller is electrically connected with the hydrogen supply pipeline, the suppression gas supply pipeline, the air supply pipeline, the temperature regulator and the vacuum pump.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, and in particular to a fuel cell safety control system based on MQTT. Background Art

[0002] A fuel cell system primarily consists of a hydrogen supply system, an air system, a temperature control system, a main power system, and a fuel cell stack. The hydrogen supply system's primary function is to provide hydrogen fuel to the system; the air system provides the system with the reaction conditions and environment for redox reactions; the temperature control system's role in the system is to keep the battery operating at a suitable temperature; the main power system controls the fuel cell's power generation voltage and current, and the fuel cell stack is the site of the redox reaction. For fuel cell systems, the safety of the fuel cell stack is a key design focus. Generally, when an abnormality occurs in the fuel cell stack, the fuel cell system protects the fuel cell stack by cutting off power or hydrogen. However, this method allows the residual hydrogen and oxygen in the fuel cell stack to react, which can prolong the risk of the fuel cell stack and easily lead to more serious consequences. Utility Model Content

[0003] In order to solve the above technical problems or at least partially solve the above technical problems, the present invention provides a fuel cell safety control system based on MQTT.

[0004] The utility model provides a fuel cell safety control system based on MQTT, comprising: a fuel cell stack, wherein the hydrogen inlet of the fuel cell stack can be selectively connected to a hydrogen supply pipeline or a suppression gas supply pipeline, the air inlet of the fuel cell stack can be selectively connected to an air supply pipeline or the suppression gas supply pipeline, the hydrogen exhaust port of the fuel cell can be selectively connected to a gas-liquid separator or a vacuum pump, and the exhaust port of the gas-liquid separator is back-connected to the hydrogen supply pipeline;

[0005] The fuel cell stack is connected to a temperature regulator;

[0006] An MQTT information acquisition unit, which acquires the voltage of the fuel cell stack and the gas pressure and temperature parameters of the fuel cell; the MQTT information acquisition unit is connected to an MQTT communication gateway, the MQTT communication gateway is connected to a fuel cell upper controller, and the MQTT information acquisition unit is electrically connected to a fuel cell controller; the MQTT communication gateway is connected to a fuel cell controller; the fuel cell controller is electrically connected to a hydrogen supply line, an inhibition gas supply line, an air supply line, a temperature regulator, and a vacuum pump.

[0007] Furthermore, the hydrogen supply pipeline includes: a hydrogen storage tank, which is connected to a first pressure reducing valve, a hydrogen inlet valve and a first proportional regulating valve in sequence through a pipeline; the first proportional regulating valve is connected to a jet guider, and the jet guider is connected to the hydrogen inlet of the fuel cell stack through a first selection valve, a safety pressure relief valve is arranged between the jet guider and the first selection valve, the drainage port of the jet guider is connected to the exhaust port of the gas-liquid separator, and the air inlet of the gas-liquid separator is connected to the hydrogen exhaust port of the fuel cell through a second selection valve.

[0008] Furthermore, a hydrogen storage tank pressure gauge P1 is provided on the hydrogen storage tank, a pressure gauge P2 is provided between the first pressure reducing valve and the hydrogen inlet valve, a temperature sensor T1 and a pressure gauge P3 are provided between the jet guide and the first selection valve, a temperature sensor T2 and a pressure gauge P4 are provided between the gas-liquid separator and the second selection valve, and the hydrogen storage tank pressure gauge P1, pressure gauge P2, temperature sensor T1, pressure gauge P3, temperature sensor T2 and pressure gauge P4 are connected to the MQTT information collection unit.

[0009] Furthermore, the suppression gas supply pipeline includes: a suppression gas storage tank, the suppression gas storage tank is connected to a second pressure reducing valve, a suppression gas inlet valve, a second proportional regulating valve and a third selection valve in sequence through a pipeline, and the third selection valve is connected to the hydrogen inlet and the air inlet of the fuel cell stack;

[0010] A suppression gas storage tank pressure gauge P5 is provided on the suppression gas storage tank, a pressure gauge P6 is provided between the second pressure reducing valve and the suppression gas inlet valve, and the suppression gas storage tank pressure gauge P5 and the pressure gauge P6 are connected to the MQTT information collection unit.

[0011] Furthermore, the air supply pipeline includes: an air intake hood, the air intake hood is connected to an air filter, the air filter is connected to an air supercharger, the air supercharger is connected to an air humidifier, and the air humidifier is connected to the air intake port of the fuel cell stack via a fifth selection valve.

[0012] Furthermore, the temperature regulator includes: a circulation pump, the outlet of the circulation pump is connected to the inlet of the heat transfer medium of the fuel cell stack, and a water storage tank is provided between the outlet of the circulation pump and the inlet of the heat transfer medium of the fuel cell stack; the outlet of the heat transfer medium of the fuel cell stack is connected to a first flow regulating valve, the first flow regulating valve is connected to the inlet of a three-way valve via a first one-way valve, one outlet of the three-way valve is connected to the inlet of a radiator, the outlet of the radiator is connected to the inlet of the circulation pump, the other outlet of the three-way valve is connected to a heater, and the heater is connected to the inlet of the circulation pump;

[0013] A temperature sensor T5 is provided at the outlet of the circulation pump, and a temperature sensor T6 is provided at the outlet of the heat transfer medium of the fuel cell stack. The temperature sensor T5 and the temperature sensor T6 are connected to the MQTT information acquisition unit.

[0014] Furthermore, the temperature regulator includes: an air cooler, which is connected between the air booster and the air humidifier in the air supply pipeline, the heat transfer medium inlet of the air cooler is connected to the outlet of the circulation pump, and the heat transfer medium outlet of the air cooler is connected to a second flow regulating valve, and the second flow regulating valve is connected to the inlet of the three-way valve via a second one-way valve.

[0015] Furthermore, the hydrogen exhaust port of the fuel cell stack is connected to a fourth selection valve, and the fourth selection valve is connected to the vacuum pump.

[0016] The above technical solution provided by the embodiment of the utility model has the following advantages compared with the prior art:

[0017] The hydrogen inlet of the fuel cell stack of the present application can be selectively connected to the hydrogen supply line or the suppression gas supply line, the air inlet of the fuel cell stack can be selectively connected to the air supply line or the suppression gas supply line, the hydrogen exhaust port of the fuel cell can be selectively connected to the gas-liquid separator or connected to the vacuum pump, and the exhaust port of the gas-liquid separator is connected back to the hydrogen supply line; the fuel cell stack is connected to the temperature regulator; the MQTT information acquisition unit collects the voltage of the fuel cell stack and the gas pressure and temperature parameters of the fuel cell; the MQTT information acquisition unit is connected to the MQTT communication gateway, the MQTT communication gateway is connected to the fuel cell upper control machine, and the MQTT information acquisition unit is electrically connected to the fuel cell controller; the MQTT communication gateway is connected to the fuel cell controller; the fuel cell controller is electrically connected to the hydrogen supply line, the suppression gas supply line, the air supply line, the temperature regulator and the vacuum pump. When an abnormality occurs or the reaction degree of the fuel cell stack is excessive, it supports the rapid introduction of suppression gas into the hydrogen channel and air channel of the fuel cell stack to fully or partially replace the reaction gas, slowing down the abnormal speed of the battery, reducing the reaction degree, and ensuring safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention, and together with the description, serve to explain the principles of the present invention.

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 A schematic diagram of a fuel cell safety control system based on MQTT provided in an embodiment of the present utility model;

[0021] Figure 2 A schematic diagram of a fuel cell safety control system based on MQTT under normal circumstances provided by an embodiment of the present utility model;

[0022] Figure 3 A schematic diagram of a fuel cell safety control system based on MQTT under abnormal conditions provided by an embodiment of the present utility model;

[0023] Figure 4 A schematic diagram of a temperature regulator provided in an embodiment of the present invention.

[0024] The numbers and meanings in the figure are as follows:

[0025] 1. Fuel cell stack;

[0026] 2. Hydrogen gas supply pipeline, 21. Hydrogen storage tank, 22. First pressure reducing valve, 23. Hydrogen gas inlet valve, 24. First proportional regulating valve, 25. Jet guide, 26. First selection valve, 27. Safety pressure relief valve;

[0027] 3. Gas-liquid separator, 31. Second selection valve;

[0028] 4. Suppression gas supply pipeline, 41. Suppression gas storage tank, 42. Second pressure reducing valve, 43. Suppression gas inlet valve, 44. Second proportional regulating valve, 45. Third selection valve;

[0029] 5. Air supply pipeline, 51. Air intake cover, 52. Air filter, 53. Air booster, 54. Exhaust valve, 55. Air humidifier, 56. Fifth selection valve;

[0030] 6. Temperature regulator, 61. Radiator, 62. Three-way valve, 63. Water tank, 64. Circulation pump, 65. Air cooler, 66. Second flow regulating valve, 67. First flow regulating valve, 68. Heater;

[0031] 7. Vacuum pump, 71. Fourth selection valve. DETAILED DESCRIPTION

[0032] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0033] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0034] See Figure 1 As shown, the embodiment of the present invention provides a fuel cell safety control system based on MQTT, including:

[0035] A fuel cell stack 1, wherein the hydrogen inlet of the fuel cell stack 1 can be selectively connected to the hydrogen supply pipeline 2 or the suppression gas supply pipeline 4, the air inlet of the fuel cell stack can be selectively connected to the air supply pipeline 5 or the suppression gas supply pipeline 4, the hydrogen exhaust port of the fuel cell can be selectively connected to the gas-liquid separator 3 or connected to the vacuum pump 7, and the exhaust port of the gas-liquid separator 3 is connected back to the hydrogen supply pipeline 2.

[0036] The hydrogen supply pipeline 2 includes: a hydrogen storage tank 21 for storing high-pressure hydrogen, a first pressure reducing valve 22 is provided at the outlet of the hydrogen storage tank 21, the first pressure reducing valve 22 limits the pressure of the output hydrogen, the first pressure reducing valve 22 is connected to a hydrogen inlet valve 23, and the hydrogen inlet valve 23 is followed by a first proportional regulating valve 24; the first proportional regulating valve 24 is used to regulate the hydrogen leading to the fuel cell stack, the first proportional regulating valve 24 is connected to a jet guider 25, and the jet guider 25 is connected to the hydrogen inlet of the fuel cell stack 1 through a first selection valve 26, a safety pressure relief valve 27 is provided between the jet guider 25 and the first selection valve 26, the drainage port of the jet guider 25 is connected to the exhaust port of the gas-liquid separator 3, and the air inlet of the gas-liquid separator 3 is connected to the hydrogen exhaust port of the fuel cell through a second selection valve 31.

[0037] A hydrogen storage tank pressure gauge P1 is provided on the hydrogen storage tank 21, and the hydrogen storage tank pressure gauge P1 is used to measure the air pressure of the hydrogen storage tank 21. A pressure gauge P2 is provided between the first pressure reducing valve 22 and the hydrogen inlet valve 23, and the pressure gauge P2 measures the hydrogen pressure after the first pressure reducing valve 22 reduces the pressure. A temperature sensor T1 and a pressure gauge P3 are provided between the jet guide 25 and the first selection valve 26, respectively measuring the hydrogen inlet temperature and the inlet pressure of the fuel cell stack. A temperature sensor T2 and a pressure gauge P4 are provided between the gas-liquid separator 3 and the second selection valve 31, respectively measuring the hydrogen outlet temperature and the outlet pressure of the fuel cell stack. The hydrogen storage tank pressure gauge P1, pressure gauge P2, temperature sensor T1, pressure gauge P3, temperature sensor T2 and pressure gauge P4 are connected to the MQTT information acquisition unit.

[0038] The air supply pipeline 5 includes: an air intake hood 51, the air intake hood 51 is connected to an air filter 52, the air filter 52 is connected to an air supercharger 53, the air supercharger 53 is connected to an air humidifier 55, the air humidifier 55 is connected to the air inlet of the fuel cell stack 1 through a fifth selection valve 56, the air exhaust port of the fuel cell stack 1 is connected to the air humidifier 55, and is finally discharged through the exhaust valve 54.

[0039] The suppression gas supply pipeline 4 includes: a suppression gas storage tank 41 for storing suppression gases such as helium or nitrogen. A second pressure reducing valve 42 is provided at the outlet of the suppression gas storage tank 41. The second pressure reducing valve 42 limits the pressure of the output suppression gas. The second pressure reducing valve is connected to a suppression gas inlet valve 43. A second proportional regulating valve 44 is connected to the suppression gas inlet valve 43. The second proportional regulating valve 44 regulates the suppression gas to the fuel cell stack. The second proportional regulating valve 44 is connected to a third selection valve 45. The third selection valve 45 connects the hydrogen inlet and air inlet of the fuel cell stack. A suppression gas storage tank pressure gauge P5 is provided on the suppression gas storage tank 41. The suppression gas storage tank pressure gauge P5 is used to measure the pressure of the suppression gas storage tank 41. A pressure gauge P6 is provided between the second pressure reducing valve 42 and the suppression gas inlet valve 43 , and the pressure gauge P6 measures the pressure of the suppression gas after being reduced in pressure by the second pressure reducing valve 42 . The suppression gas storage tank pressure gauge P5 and the pressure gauge P6 are connected to the MQTT information collection unit.

[0040] The fuel cell stack 1 is connected to the temperature regulator 6; Figure 4As shown, the temperature regulator 6 includes: a circulation pump 64, the outlet of the circulation pump 64 is connected to the heat transfer medium inlet of the fuel cell stack 1, and a water tank 63 is arranged between the outlet of the circulation pump 64 and the heat transfer medium inlet of the fuel cell stack 1; the heat transfer medium outlet of the fuel cell stack 1 is connected to a first flow regulating valve 67, the first flow regulating valve 67 is connected to the inlet of the three-way valve 62 through a first one-way valve, one outlet of the three-way valve 62 is connected to the inlet of the radiator 61, the outlet of the radiator 61 is connected to the inlet of the circulation pump 64, and the other outlet of the three-way valve 62 is connected to the heater 68, and the heater 68 is connected to the inlet of the circulation pump 64.

[0041] A temperature sensor T5 is provided at the outlet of the circulation pump 64 , and a temperature sensor T6 is provided at the outlet of the heat transfer medium of the fuel cell stack 1 . The temperature sensor T5 and the temperature sensor T6 are connected to the MQTT information acquisition unit.

[0042] The temperature regulator 6 also includes an air cooler 65 connected between the air booster 53 and the air humidifier 55 in the air supply line 5. The heat transfer medium inlet of the air cooler 65 is connected to the outlet of the circulation pump 64, and the heat transfer medium outlet of the air cooler 65 is connected to a second flow regulating valve 66. The second flow regulating valve 66 is connected to the inlet of the three-way valve 62 via a second one-way valve. The temperature regulator 6 is used to cool both the fuel cell stack and the compressed high-temperature air.

[0043] The hydrogen exhaust port of the fuel cell stack 1 is connected to a fourth selector valve 71 , and the fourth selector valve 71 is connected to the vacuum pump 7 .

[0044] In the specific implementation process, Figure 2 As shown, when the fuel cell continues to work normally, the first selection valve 26, the second selection valve 31 and the fifth selection valve 56 are turned on, and the third selection valve 45 and the fourth selection valve 71 are turned off, so that the hydrogen supply pipeline 2 and the air supply pipeline 5 are connected to the fuel cell stack 1, and the fuel cell works normally.

[0045] In the specific implementation process, Figure 3 As shown, when an abnormality occurs, the first selection valve 26, the second selection valve 31 and the fifth selection valve 56 are cut off, and the third selection valve 45 and the fourth selection valve 71 are turned on, so that the inhibition gas supply pipeline 4 and the vacuum pump 7 are connected to the fuel cell stack 1, the vacuum pump 7 quickly evacuates the hydrogen flow channel, and the inhibition gas supply pipeline 4 provides the anode and cathode flows to provide inhibition gas to the fuel cell stack, so as to quickly replace the oxygen-containing air and hydrogen with the inhibition gas to reduce the risk.

[0046] During the specific implementation process, the MQTT information acquisition unit collects the voltage of the fuel cell stack 1 and the gas pressure and temperature parameters of the fuel cell; the MQTT information acquisition unit is connected to the MQTT communication gateway, the MQTT communication gateway is connected to the fuel cell upper control machine, and the MQTT information acquisition unit is electrically connected to the fuel cell controller; the MQTT communication gateway is connected to the fuel cell controller; the fuel cell controller is electrically connected to the hydrogen supply pipeline 2, the suppression gas supply pipeline 4, the air supply pipeline 5, the temperature regulator 6 and the vacuum pump 7.

[0047] During specific implementations, the fuel cell controller controls the three-way valve 62 to connect the temperature regulator 6 to the radiator 61 or heater 68 based on whether heating or cooling is required. The fuel cell controller controls the power of the radiator 61 and heater 68 based on the temperature of the temperature sensor T5. The fuel cell controller also controls the second flow control valve 66 to adjust the flow rate based on the temperature of the temperature sensor T7. The fuel cell controller also controls the first flow control valve 67 to adjust the flow rate based on the temperature of the temperature sensor T6. Regarding the hydrogen supply line 2, the fuel cell controller controls the first proportional control valve 24 to adjust the hydrogen intake based on the pressure readings of the barometers P3 and P4, thereby stabilizing the hydrogen supply to the fuel cell stack 1.

[0048] In the embodiments provided by the present invention, it should be understood that the disclosed structures can be implemented in other ways. For example, the structural embodiments described above are merely illustrative. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interface, structure or unit, which can be electrical, mechanical or other forms.

[0049] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0050] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0051] The foregoing description is intended only to provide specific embodiments of the present invention, intended to enable those skilled in the art to understand and implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not intended to be limited to the embodiments shown herein, but rather to be construed in the broadest manner consistent with the principles and novel features claimed herein.

Claims

1. A fuel cell safety control system based on MQTT, characterized in that: include: A fuel cell stack (1), wherein the hydrogen inlet of the fuel cell stack (1) can be selectively connected to a hydrogen supply pipeline (2) or a suppression gas supply pipeline (4), the air inlet of the fuel cell stack can be selectively connected to an air supply pipeline (5) or the suppression gas supply pipeline (4), the hydrogen exhaust port of the fuel cell can be selectively connected to a gas-liquid separator (3) or connected to a vacuum pump (7), and the exhaust port of the gas-liquid separator (3) is connected back to the hydrogen supply pipeline (2); The fuel cell stack (1) is connected to a temperature regulator (6); An MQTT information acquisition unit, wherein the MQTT information acquisition unit acquires the voltage of a fuel cell stack (1) and the gas pressure and temperature parameters of the fuel cell; the MQTT information acquisition unit is connected to an MQTT communication gateway, the MQTT communication gateway is connected to a fuel cell upper controller, and the MQTT information acquisition unit is electrically connected to a fuel cell controller; the MQTT communication gateway is connected to the fuel cell controller; the fuel cell controller is electrically connected to a hydrogen supply pipeline (2), an inhibitory gas supply pipeline (4), an air supply pipeline (5), a temperature regulator (6), and a vacuum pump (7).

2. The MQTT-based fuel cell safety control system according to claim 1, characterized in that: The hydrogen supply pipeline (2) comprises: a hydrogen storage tank (21), the hydrogen storage tank (21) being connected to a first pressure reducing valve (22), a hydrogen inlet valve (23) and a first proportional regulating valve (24) in sequence through a pipeline; the first proportional regulating valve (24) being connected to a jet guider (25), the jet guider (25) being connected to the hydrogen inlet of the fuel cell stack (1) through a first selection valve (26), a safety pressure relief valve (27) being provided between the jet guider (25) and the first selection valve (26), the guide port of the jet guider (25) being connected to the exhaust port of a gas-liquid separator (3), the intake port of the gas-liquid separator (3) being connected to the hydrogen exhaust port of the fuel cell through a second selection valve (31).

3. The MQTT-based fuel cell safety control system according to claim 2, characterized in that: A hydrogen storage tank pressure gauge P1 is provided on the hydrogen storage tank (21), a pressure gauge P2 is provided between the first pressure reducing valve (22) and the hydrogen inlet valve (23), a temperature sensor T1 and a pressure gauge P3 are provided between the jet guide (25) and the first selection valve (26), a temperature sensor T2 and a pressure gauge P4 are provided between the gas-liquid separator (3) and the second selection valve (31), and the hydrogen storage tank pressure gauge P1, the pressure gauge P2, the temperature sensor T1, the pressure gauge P3, the temperature sensor T2 and the pressure gauge P4 are connected to an MQTT information acquisition unit.

4. The MQTT-based fuel cell safety control system according to claim 1, characterized in that: The suppression gas supply pipeline (4) comprises: a suppression gas storage tank (41), the suppression gas storage tank (41) being sequentially connected to a second pressure reducing valve (42), a suppression gas inlet valve (43), a second proportional regulating valve (44) and a third selection valve (45) via a pipeline, and the third selection valve (45) is connected to the hydrogen inlet and the air inlet of the fuel cell stack; A suppression gas storage tank pressure gauge P5 is provided on the suppression gas storage tank (41), a pressure gauge P6 is provided between the second pressure reducing valve (42) and the suppression gas inlet valve (43), and the suppression gas storage tank pressure gauge P5 and the pressure gauge P6 are connected to the MQTT information collection unit.

5. The MQTT-based fuel cell safety control system according to claim 1, characterized in that: The air supply pipeline (5) comprises an air intake hood (51), the air intake hood (51) is connected to an air filter (52), the air filter (52) is connected to an air supercharger (53), the air supercharger (53) is connected to an air humidifier (55), and the air humidifier (55) is connected to the air intake port of the fuel cell stack (1) via a fifth selection valve (56).

6. The MQTT-based fuel cell safety control system according to claim 1, characterized in that: The temperature regulator (6) comprises: a circulation pump (64), the outlet of the circulation pump (64) is connected to the heat transfer medium inlet of the fuel cell stack (1), and a water storage tank (63) is provided between the outlet of the circulation pump (64) and the heat transfer medium inlet of the fuel cell stack (1); the heat transfer medium outlet of the fuel cell stack (1) is connected to a first flow regulating valve (67), the first flow regulating valve (67) is connected to the inlet of a three-way valve (62) via a first one-way valve, one outlet of the three-way valve (62) is connected to the inlet of a radiator (61), the outlet of the radiator (61) is connected to the inlet of the circulation pump (64), the other outlet of the three-way valve (62) is connected to a heater (68), and the heater (68) is connected to the inlet of the circulation pump (64); A temperature sensor T5 is provided at the outlet of the circulation pump (64), and a temperature sensor T6 is provided at the outlet of the heat transfer medium of the fuel cell stack (1). The temperature sensor T5 and the temperature sensor T6 are connected to the MQTT information acquisition unit.

7. The MQTT-based fuel cell safety control system according to claim 6, characterized in that: The temperature regulator (6) comprises an air cooler (65), the air cooler (65) being connected between the air supercharger (53) and the air humidifier (55) in the air supply pipeline (5), the heat transfer medium inlet of the air cooler (65) being connected to the outlet of the circulation pump (64), the heat transfer medium outlet of the air cooler (65) being connected to a second flow regulating valve (66), and the second flow regulating valve (66) being connected to the inlet of the three-way valve (62) via a second one-way valve.

8. The MQTT-based fuel cell safety control system according to claim 1, characterized in that: The hydrogen exhaust port of the fuel cell stack (1) is connected to a fourth selection valve (71), and the fourth selection valve (71) is connected to the vacuum pump (7).

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