Safety protection system

Abstract

The utility model relates to a safety protection system which is applied to fixed fuel cell power generation equipment, the fixed fuel cell power generation equipment comprises a fuel cell power generation bin and an output electrical bin which are adjacently arranged, and the safety protection system comprises a hydrogen leakage safety assembly and a pressure difference maintaining assembly; the pressure difference maintaining assembly comprises a negative pressure fan mounted in the fuel cell power generation cabin and a positive pressure fan mounted in the output electrical cabin; the negative-pressure fan keeps the fuel cell power generation bin in a negative-pressure state, and the positive-pressure fan keeps the output electrical bin in a positive-pressure state. The hydrogen leakage detection device has the hydrogen leakage detection capability, and can ensure that a stable negative pressure difference is formed between the fuel cell power generation bin and the output electrical bin, so that even if hydrogen leakage occurs, hydrogen can be ensured not to enter the output electrical bin, and damage to high-voltage equipment due to contact between the hydrogen and the high-voltage equipment is avoided; therefore, the fault probability and the fault loss are reduced, and the safe operation of the fixed fuel cell power generation equipment is effectively maintained.

Description

Technical Field

[0001] The present application relates to the technical field of stationary fuel cell power generation auxiliary equipment, and more specifically, to a safety protection system. Background Art

[0002] Clean energy includes solar energy, wind energy, hydropower, hydrogen energy, tidal energy, etc. The use of clean energy can solve the problems caused by fossil energy. With the development and progress of society, people's demand for electricity is increasing. Compared with other clean energy sources, hydrogen energy is not affected by sunlight, weather, and wind, and can be adjusted according to people's demand for electricity. The conversion efficiency of hydrogen energy power generation can currently reach about 50%, and there is still room for improvement in the future. The emission of hydrogen energy is water, which can achieve zero emission and no pollution.

[0003] The energy used by fixed fuel cell power generation equipment is hydrogen, which is a flammable and explosive gas under certain concentrations and conditions. In addition, the fixed power generation fuel equipment is connected to the power grid or the user's high-voltage power grid, which poses certain safety hazards. If not handled properly, it will cause equipment losses and casualties. Due to the high power, fixed working location, long working hours, connection to the power grid system and different user usage scenarios of fixed fuel cell power generation equipment, the different working modes lead to different reasons for equipment failures, which include both failures caused by internal equipment reasons and equipment problems caused by external reasons, and the same failure phenomenon may be caused by different reasons. Traditional safety protection systems cannot comprehensively and systematically protect the entire fixed fuel cell power generation equipment and equipment operators and maintenance personnel, and once a failure occurs, it cannot detect and handle the failure from the overall safety level, resulting in a series of safety measures such as fault detection, handling, equipment protection and personnel safety that cannot be fully and effectively started.

[0004] Therefore, how to ensure the stable and safe operation of fixed fuel power generation equipment, and how to promptly discover and quickly respond to faults to avoid the expansion of faults, is a necessary condition and important guarantee for ensuring the effective and safe operation of fixed fuel power generation equipment. Utility Model Content

[0005] The present application provides a safety protection system to solve the problem in the prior art that fixed fuel cell power generation equipment has potential safety hazards due to the use of hydrogen energy and requires safety protection.

[0006] According to a safety protection system provided by the present application, it is applied to a fixed fuel cell power generation equipment, the fixed fuel cell power generation equipment includes: a fuel cell power generation compartment and an output electrical compartment arranged adjacently, the safety protection system includes: a hydrogen leakage safety component and a pressure difference maintaining component, the hydrogen leakage safety component is used to detect whether hydrogen leakage occurs, and the pressure difference maintaining component is used to form a pressure difference to assist in protecting the safety of the equipment under hydrogen leakage;

[0007] The pressure difference maintaining component includes: a negative pressure fan installed in the fuel cell power generation compartment and a positive pressure fan installed in the output electrical compartment; the negative pressure fan keeps the fuel cell power generation compartment in a negative pressure state, and the positive pressure fan keeps the output electrical compartment in a positive pressure state.

[0008] In some embodiments, the pressure difference maintaining assembly further includes: a silo pressure difference sensor installed between the fuel cell power generation silo and the output electrical silo, and an audible and visual alarm device; the audible and visual alarm device and the silo pressure difference sensor are linked to generate an alarm.

[0009] In some embodiments, the fuel cell power generation compartment is provided with a fuel cell power generation matrix and a hydrogen supply main valve, the fuel cell power generation matrix is ​​provided in the fuel cell power generation compartment and is composed of a plurality of fuel cells, and the hydrogen supply main valve is connected to the gas transmission trunk of the plurality of fuel cells;

[0010] The hydrogen leakage safety component includes: multiple hydrogen concentration detection probes; multiple hydrogen concentration detection probes are respectively arranged in the fuel cell power generation compartment, the output power compartment and the battery stack cavity of each fuel cell; the hydrogen supply main valve is linked with the hydrogen concentration detection probe.

[0011] In some embodiments, hydrogen concentration detection probes are installed at the top position in the fuel cell power generation compartment, the output power compartment, and the stack cavity of each fuel cell.

[0012] In some embodiments, a plurality of DC boost converters are further provided in the fuel cell power generation compartment, and the plurality of DC boost converters are electrically connected to the plurality of fuel cells respectively;

[0013] The safety protection system also includes: electrical safety components; the electrical safety components include: a main circuit switch, a main circuit fuse and multiple branch circuit fuses; the main circuit switch and the main circuit fuse are connected in series to the power transmission trunk line of the fuel cell power generation matrix, and the multiple branch circuit fuses are respectively connected in series to the power transmission branch lines of each fuel cell.

[0014] In some embodiments, the electrical safety component also includes: an abnormal voltage energy absorption device and a grounding protection device. The abnormal voltage energy absorption device connects the power transmission trunk line of the fuel cell power generation matrix to the grounding system, and the grounding protection device connects the housing of each device in the output electrical compartment to the grounding system.

[0015] In some embodiments, the abnormal voltage energy absorption device is a sub-sensitive ceramic diode.

[0016] In some embodiments, the protection system further includes: a fire safety component; the fire safety component includes: multiple sets of matching temperature smoke detectors and fire extinguishing nozzles, and the multiple sets of temperature smoke detectors and fire extinguishing nozzles are respectively arranged at each fuel cell and the DC boost converter.

[0017] In some embodiments, the fire safety component further includes: a fire extinguishing agent storage tank and a delivery pipeline, wherein the delivery pipeline connects the fire extinguishing agent storage tank and each fire extinguishing nozzle.

[0018] In some embodiments, the safety protection system further includes: a main controller, the main controller is electrically connected to the hydrogen leakage safety component, the pressure difference maintaining component, the electrical safety component and the fire safety component.

[0019] The safety protection system of the present application is applied to fixed fuel cell power generation equipment, including: a hydrogen leakage safety component and a pressure difference maintaining component. The hydrogen leakage safety component is used to detect whether hydrogen leakage occurs in the fixed fuel cell power generation equipment, and the pressure difference maintaining component is used to ensure that a stable negative pressure difference is formed between the fuel cell power generation compartment and the output electrical compartment. Therefore, even if a hydrogen leakage occurs, it can be ensured that hydrogen will never enter the output electrical compartment, thereby avoiding damage to the high-voltage equipment due to hydrogen contact with high pressure, reducing the probability of failure and failure losses, and effectively maintaining the safe operation of the fixed fuel cell power generation equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0022] Figure 1 A schematic diagram showing the structure of a safety protection system according to an embodiment of the present application is shown;

[0023] The above drawings include the following reference numerals:

[0024] 110, output electrical compartment; 120, fuel cell power generation compartment; 121, first fuel cell; 1211, cooling water outlet; 1212, cooling water inlet; 1213, air inlet; 1214, hydrogen outlet; 122, second fuel cell; 1221, cooling water outlet; 1222, cooling water inlet; 1223, air inlet; 1224, hydrogen outlet; 123, first DC boost converter; 124, second DC boost converter; 125, hydrogen supply main valve; 126, first hydrogen shunt valve; 127, second hydrogen shunt valve; 128, mixed gas outlet; 131, positive pressure fan; 132, negative pressure fan; 133, compartment pressure difference sensor; 1 34. Warning light; 135. Alarm; 141. Third hydrogen concentration detection probe; 142. Fourth hydrogen concentration detection probe; 143. First hydrogen concentration detection probe; 144. Second hydrogen concentration detection probe; 151. Main circuit fuse; 152. Main circuit switch; 153. First branch circuit fuse; 154. Second branch circuit fuse; 155. Abnormal voltage energy absorption device; 156. Grounding protection device; 161. First temperature smoke detector; 162. First fire extinguishing nozzle; 163. Second temperature smoke detector; 164. Second fire extinguishing nozzle; 165. Third temperature smoke detector; 166. Third fire extinguishing nozzle; 167. Fire extinguishing agent storage tank; 168. Delivery pipeline. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0027] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] Figure 1 An embodiment of the safety protection system of the present application is schematically shown.

[0031] like Figure 1As shown, the present application discloses a safety protection system, which is applied to a fixed fuel cell power generation equipment. Among them, the fixed fuel cell power generation equipment includes: a fuel cell power generation compartment 120 and an output electrical compartment 110 arranged adjacent to each other. The safety protection system of the present application includes: a hydrogen leakage safety component and a pressure difference maintaining component, the hydrogen leakage safety component is used to detect whether a hydrogen leakage occurs, and the pressure difference maintaining component is used to form a pressure difference to assist in protecting the safety of the equipment under hydrogen leakage. Among them, the pressure difference maintaining component includes: a negative pressure fan 132 installed in the fuel cell power generation compartment 120 and a positive pressure fan 131 installed in the output electrical compartment 110. The negative pressure fan 132 keeps the fuel cell power generation compartment 120 in a negative pressure state, and the positive pressure fan 131 keeps the output electrical compartment 110 in a positive pressure state.

[0032] Through the above structure, the safety protection system of the embodiment of the present application not only has the ability to detect hydrogen leakage, but also can ensure the formation of a stable negative pressure difference between the fuel cell power generation compartment 120 and the output electrical compartment 110 through the pressure difference maintaining component. Therefore, even if hydrogen leakage occurs, it can be ensured that the hydrogen always stays in the fuel cell power generation compartment 120 and will not flow into the output electrical compartment 110, thereby avoiding damage to the high-voltage equipment due to hydrogen contact, thereby reducing the probability of failure and failure losses, and effectively maintaining the safe operation of the fixed fuel cell power generation equipment.

[0033] Specifically, Figure 1 As shown, at the fuel cell power generation compartment 120, the negative pressure fan 132 blows air from the inside to the outside, so that the fuel cell power generation compartment 120 maintains a negative pressure state. At the output electrical compartment 110, the positive pressure fan 131 blows air from the outside to the inside, so that the output electrical compartment 110 maintains a positive pressure state. As a result, the air pressure in the output electrical compartment 110 is always higher than that in the fuel cell power generation compartment 120, and even if hydrogen leaks, hydrogen will not enter the output electrical compartment 110, thereby reducing the probability of hydrogen contacting high-voltage equipment to cause combustion and explosion, and reducing the probability of accidents and losses.

[0034] In some embodiments of the present application, Figure 1 As shown, the pressure difference maintaining assembly also includes: a tank pressure difference sensor 133 and an audible and visual alarm device installed between the fuel cell power generation tank 120 and the output power tank 110. The tank pressure difference sensor 133 detects the pressure difference between the two tanks, which can further ensure the safety of hydrogen use during the operation of the power generation equipment. The audible and visual alarm device and the tank pressure difference sensor 133 are linked to alarm, which can promptly remind the operator to handle the fault. Figure 1 As shown, in the embodiment of the present application, the sound and light alarm device includes an alarm light 134 and an alarm 135. When a fault occurs and the operator needs to respond and handle the emergency, the alarm light 134 and the alarm 135 work simultaneously to give warnings by emitting light and sounding a whistle.

[0035] In some embodiments of the present application, the fuel cell power generation chamber 120 is provided with a fuel cell power generation matrix and a hydrogen supply main valve 125. The fuel cell power generation matrix is ​​provided in the fuel cell power generation chamber 120 and is composed of a plurality of fuel cells, and the hydrogen supply main valve 125 is connected to the gas transmission trunk of the plurality of fuel cells. By combining multiple fuel cells to generate electricity, the power generation can be increased to meet the high-voltage needs of users.

[0036] In the embodiment of the present application. The hydrogen leakage safety component includes: a plurality of hydrogen concentration detection probes. The plurality of hydrogen concentration detection probes are respectively arranged in the fuel cell power generation compartment 120, the output power compartment 110 and the battery stack cavity of each fuel cell. The hydrogen supply main valve 125 is linked to the hydrogen concentration detection probe. When it is detected that the hydrogen leakage exceeds the safety standard, the corresponding protection control operation is performed until the hydrogen supply main valve 125 is closed, the power generation equipment is stopped, and other measures are taken.

[0037] In some embodiments of the present application, the hydrogen concentration detection probes are installed at the top of the fuel cell power generation compartment 120, the output electrical compartment 110, and the stack cavity of each fuel cell. Since the density of hydrogen is lower than the density of air, the hydrogen concentration detection probes are installed at the top of each compartment and each cavity, which is conducive to improving the sensitivity of detecting hydrogen concentration.

[0038] Specifically in the embodiments of the present application, Figure 1 As shown, the fuel cell power generation matrix includes a first fuel cell 121 and a second fuel cell 122, and the first fuel cell 121 has the same structure as the second fuel cell 122. The hydrogen intake of the first fuel cell 121 is controlled by a first hydrogen shunt valve 126. In addition, the first fuel cell 121 includes a cooling water outlet 1211, a cooling water inlet 1212, an air inlet 1213, and a hydrogen outlet 1214. The hydrogen intake of the second fuel cell 122 is controlled by a second hydrogen shunt valve 127. In addition, the second fuel cell 122 includes a cooling water outlet 1221, a cooling water inlet 1222, an air inlet 1223, and a hydrogen outlet 1224. The exhaust gas of the first fuel cell 121 and the second fuel cell 122 finally converges and is discharged through the mixed gas outlet 128.

[0039] A first hydrogen concentration detection probe 143 is provided in the stack cavity of the first fuel cell 121, and a second hydrogen concentration detection probe 144 is provided in the stack cavity of the second fuel cell 122. A third hydrogen concentration detection probe 141 is provided on the top of the output electrical compartment 110. A fourth hydrogen concentration detection probe 142 is provided on the top of the fuel cell power generation compartment 120. These hydrogen concentration detection probes are linked to the hydrogen supply main valve 125 on the main gas transmission line, so that once the hydrogen leakage is detected to exceed the safety standard, the corresponding protection control operation is performed to stop the gas supply and stop the power generation equipment.

[0040] In some embodiments of the present application, a plurality of fuel cells supporting the fuel cell power generation matrix, a plurality of DC boost converters are also provided in the fuel cell power generation chamber 120, and the plurality of DC boost converters are electrically connected to the plurality of fuel cells respectively. In an embodiment of the present application, two DC boost converters are provided, namely a first DC boost converter 123 and a second DC boost converter 124. The first DC boost converter 123 cooperates with the first fuel cell 121, and the second DC boost converter 124 cooperates with the second fuel cell 122 to increase the output voltage of each fuel cell to the bus voltage, thereby achieving high voltage output.

[0041] In contrast, the safety protection system of the present application also includes: an electrical safety component. The electrical safety component includes: a main circuit switch 152, a main circuit fuse 151 and a plurality of branch circuit fuses (i.e., a first branch circuit fuse 153 and a second branch circuit fuse 154). The main circuit switch 152 and the main circuit fuse 151 are connected in series on the transmission trunk of the fuel cell power generation matrix, which is, in the embodiment of the present application, on the output terminal summary line of a plurality of DC boost converters. A plurality of branch circuit fuses are respectively connected in series on the transmission branch of each fuel cell, which is, in the embodiment of the present application, on the transmission branch closely connected to the DC boost converter. Once the transmission branch or the main circuit has an excessive current due to various reasons, an overcurrent protection measure will be triggered until the corresponding fuse fuse is blown, thereby protecting key core components and fuel cells. In addition, in some embodiments of the present application, a current sensor is also provided on the transmission line, and the power generation status of the equipment can be monitored in real time through the current sensor.

[0042] In some embodiments of the present application, Figure 1As shown, the electrical safety component also includes: an abnormal voltage energy absorption device 155 and a grounding protection device 156. The abnormal voltage energy absorption device 155 connects the power transmission trunk of the fuel cell power generation matrix to the grounding system, and the grounding protection device 156 connects the housings of each device in the output electrical compartment 110 to the grounding system. The abnormal voltage energy absorption device 155 can lead this part of energy to the grounding system when the equipment is struck by lightning or other abnormal high voltage conditions, thereby ensuring that personnel and equipment will not cause equipment accidents and personal safety due to abnormal high voltage. The grounding protection device 156 connects the housing of the equipment in the output electrical compartment 110 to the grounding system to ensure that once a leakage fault occurs, this part of the current can be introduced into the ground, thereby protecting the safety of the operator.

[0043] In some embodiments of the present application, the abnormal voltage energy absorption device 155 is a sub-sensitive ceramic diode, which has the effect of quickly conducting and discharging high-voltage electrical energy and can effectively stabilize the output voltage.

[0044] In some embodiments of the present application, the safety protection system further includes: a fire safety component. The fire safety component includes: a plurality of sets of temperature smoke detectors and fire extinguishing nozzles, which are respectively arranged at each fuel cell and the DC boost converter. Figure 1 As shown, a first temperature smoke detector 161 and a first fire extinguishing nozzle 162 are provided at the first fuel cell 121, and a second temperature smoke detector 163 and a second fire extinguishing nozzle 164 are provided at the second fuel cell 122. In addition, a temperature smoke detector and a fire extinguishing nozzle are also provided in the output electrical compartment 110, namely: a third temperature smoke detector 165 and a third fire extinguishing nozzle 166, so as to timely put out a fire that may occur in the output electrical compartment 110.

[0045] In some embodiments of the present application, Figure 1 As shown, the fire safety assembly also includes: a fire extinguishing agent storage tank 167 and a delivery pipe 168, and the delivery pipe 168 connects the fire extinguishing agent storage tank 167 and each fire extinguishing nozzle. Once each temperature smoke detector detects a fire, the fire safety assembly is immediately activated, and the fire extinguishing agent is delivered by opening the fire extinguishing agent storage tank 167 to extinguish the fire through the fire extinguishing nozzle.

[0046] In some embodiments of the present application, the safety protection system further includes: a master controller, the master controller is electrically connected to the hydrogen leakage safety component, the pressure difference maintaining component, the electrical safety component and the fire safety component, so that the master controller coordinates the coordinated work between the various components to achieve linkage control within each component. For example, in the pressure difference maintaining component, the sound and light alarm 135 is controlled to respond to the fault detection signal of the silo pressure difference sensor 133; in the hydrogen leakage safety component, the hydrogen supply main valve 125 is controlled to respond to the leakage detection signal of the hydrogen concentration detection probe, and so on. The linkage control between these sensors and actuators is well known to those skilled in the art and can be implemented by commercially available single-chip microcomputers or host computers, which will not be described one by one here.

[0047] Therefore, the present application proposes a safety protection system with comprehensive prevention and handling capabilities for safety failures, the safety protection system comprising: a hydrogen leakage safety component, a pressure differential maintenance component, an electrical safety component and a fire safety component. The safety protection system combines active protection with passive protection, wherein the hydrogen leakage component and the pressure differential maintenance component can actively control hydrogen leakage, and cooperate with the electrical safety component to block high current fire hazards, thereby reducing the probability of dangerous failures at the source; the fire safety component adopts a passive approach, by quickly discovering fire failures and taking fire extinguishing operations in a timely manner, reducing failure losses. Therefore, the present application can more comprehensively, reasonably and quickly handle safety failures caused by different reasons, and maintain the safe operation of fixed fuel cell power generation equipment.

[0048] In summary, the present application discloses a safety protection system, including: a hydrogen leakage safety component and a pressure difference maintaining component. The hydrogen leakage safety component is used to detect whether a hydrogen leakage occurs in a fixed fuel cell power generation equipment, and the pressure difference maintaining component is used to ensure that a stable negative pressure difference is formed between the fuel cell power generation compartment 120 and the output electrical compartment 110. Therefore, even if a hydrogen leakage occurs, it can be ensured that hydrogen will never enter the output electrical compartment 110, thereby avoiding damage to the high-voltage equipment due to hydrogen contact with high pressure, reducing the probability of failure and failure losses, and effectively maintaining the safe operation of the fixed fuel cell power generation equipment.

[0049] In a preferred embodiment of the present application, the safety protection system also includes: electrical safety components and fire safety components, so that safety failures caused by different reasons can be handled more comprehensively, reasonably and quickly, providing system-level safety protection for the stationary fuel cell power generation equipment and maintaining the safe operation of the stationary fuel cell power generation equipment.

[0050] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A safety protection system, applied to a stationary fuel cell power generation device, the stationary fuel cell power generation device comprising: A fuel cell power generation compartment (120) and an output electrical compartment (110) arranged adjacent to each other, characterized in that the safety protection system comprises: a hydrogen leakage safety component and a pressure difference maintaining component, the hydrogen leakage safety component is used to detect whether hydrogen leakage occurs, and the pressure difference maintaining component is used to form a pressure difference to assist in protecting the safety of equipment under hydrogen leakage; The pressure difference maintaining component comprises: a negative pressure fan (132) installed in the fuel cell power generation chamber (120) and a positive pressure fan (131) installed in the output electrical chamber (110); the negative pressure fan (132) maintains the fuel cell power generation chamber (120) in a negative pressure state, and the positive pressure fan (131) maintains the output electrical chamber (110) in a positive pressure state.

2. The safety protection system according to claim 1, characterized in that: The pressure difference maintaining assembly further comprises: a chamber pressure difference sensor (133) and an acoustic and visual alarm device installed between the fuel cell power generation chamber (120) and the output electrical chamber (110); the acoustic and visual alarm device and the chamber pressure difference sensor (133) are linked to alarm.

3. The safety protection system according to claim 2, characterized in that: The fuel cell power generation chamber (120) is provided with a fuel cell power generation matrix and a hydrogen supply main valve (125); the fuel cell power generation matrix is ​​arranged in the fuel cell power generation chamber (120) and is composed of a plurality of fuel cells; the hydrogen supply main valve (125) is connected to the gas transmission trunk lines of the plurality of fuel cells; The hydrogen leakage safety component comprises: a plurality of hydrogen concentration detection probes; the plurality of hydrogen concentration detection probes are respectively arranged in the fuel cell power generation compartment (120), in the output power compartment (110) and in the stack cavity of each fuel cell; the hydrogen supply main valve (125) is linked to the hydrogen concentration detection probes.

4. The safety protection system according to claim 3, characterized in that: In the fuel cell power generation compartment (120), the output electrical compartment (110) and the stack cavity of each fuel cell, the hydrogen concentration detection probe is installed at the top position.

5. The safety protection system according to claim 3, characterized in that: A plurality of DC boost converters are also arranged in the fuel cell power generation chamber (120), and the plurality of DC boost converters are electrically connected to the plurality of fuel cells respectively; The safety protection system further comprises: an electrical safety component; the electrical safety component comprises: a main circuit switch (152), a main circuit fuse (151) and a plurality of branch circuit fuses; the main circuit switch (152) and the main circuit fuse (151) are connected in series to the power transmission trunk line of the fuel cell power generation matrix, and the plurality of branch circuit fuses are respectively connected in series to the power transmission branch lines of each of the fuel cells.

6. The safety protection system according to claim 5, characterized in that: The electrical safety component also includes: an abnormal voltage energy absorption device (155) and a grounding protection device (156), wherein the abnormal voltage energy absorption device (155) connects the power transmission trunk line of the fuel cell power generation matrix to the grounding system, and the grounding protection device (156) connects the housings of each device of the output electrical compartment (110) to the grounding system.

7. The safety protection system according to claim 6, characterized in that: The abnormal voltage energy absorption device (155) is a sub-sensitive ceramic diode.

8. The safety protection system according to claim 5, characterized in that: The safety protection system also includes: a fire safety component; the fire safety component includes: a plurality of sets of matching temperature smoke detectors and fire extinguishing nozzles, and the plurality of sets of temperature smoke detectors and fire extinguishing nozzles are respectively arranged at each of the fuel cells and the DC boost converter.

9. The safety protection system according to claim 8, characterized in that: The fire safety assembly further comprises: a fire extinguishing agent storage tank (167) and a delivery pipeline (168), wherein the delivery pipeline (168) connects the fire extinguishing agent storage tank (167) and each of the fire extinguishing nozzles.

10. The safety protection system according to claim 9, characterized in that: The safety protection system further includes: a master controller, which is electrically connected to the hydrogen leakage safety component, the pressure difference maintaining component, the electrical safety component and the fire safety component.

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