CN217062187U - Gas supply system for hydrogen-air fuel battery to adapt to amphibious working condition - Google Patents
Gas supply system for hydrogen-air fuel battery to adapt to amphibious working condition Download PDFInfo
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- CN217062187U CN217062187U CN202123384864.2U CN202123384864U CN217062187U CN 217062187 U CN217062187 U CN 217062187U CN 202123384864 U CN202123384864 U CN 202123384864U CN 217062187 U CN217062187 U CN 217062187U
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Abstract
The utility model belongs to the technical field of fuel cell, especially, relate to a hydrogen fuel cell is adapted to air supply system of amphibious working condition, the utility model discloses utilize ripe hydrogen fuel cell system, saved the development cost and can popularize and apply, when hydrogen fuel cell system is under water and under the anaerobic condition, because can't absorb the air, the utility model discloses set up the negative pole and supply air module under water, utilize air ratio module to carry out the ratio and reduce pressure to oxygen in the oxygen storage tank and nitrogen gas in the nitrogen gas storage tank in order to satisfy the demand of hydrogen fuel cell negative pole air feed; and the gas-liquid separator is used for separating gas and liquid in the tail row, and the residual nitrogen and oxygen after reaction are recycled.
Description
Technical Field
The utility model belongs to the technical field of fuel cell, especially, relate to a hydrogen fuel cell is adapted to air supply system of amphibious operating mode.
Background
The proton exchange membrane fuel cell has the working principle that: hydrogen or other fuel enters the anode and is subjected to electrochemical reaction of oxidation and oxygen reduction at the interface of the electrode and the electrolyte to generate current and output electric energy. The anode reaction gas of the proton exchange membrane fuel cell is generally hydrogen or reformed hydrogen, the cathode oxidant is pure oxygen or air, the hydrogen reaches the anode through a gas guide channel on a gas guide plate, electrode reaction is carried out under the action of an anode catalyst to be decomposed into hydrogen ions and electrons, the hydrogen ions reach the cathode through the proton exchange membrane, and the electrons reach the cathode through an external circuit. Air or pure oxygen at the cathode end reaches the cathode through an air guide channel on the air guide plate, oxygen molecules react with hydrogen ions and electrons reaching the cathode under the action of a catalyst to generate water and release heat, and the water is discharged along with tail gas through the electrode.
The proton exchange membrane fuel cell can be subdivided into a pure oxygen fuel cell and an air fuel cell according to the difference of cathode oxidants, namely a hydrogen-air fuel cell and an oxyhydrogen fuel cell, the two technical routes have the same basic structure, but the internal design has larger difference, and the overall design difficulty of the oxyhydrogen fuel cell stack is greater than that of the hydrogen-air fuel cell stack as a whole. Compared with a hydrogen fuel cell stack, the research and design process of the hydrogen-oxygen fuel cell stack needs to consider higher hydrogen-oxygen utilization rate, stricter sealing requirement, quieter operation requirement and more intelligent self-feedback regulation capability. At present, hydrogen-oxygen fuel cells are generally applied in the transportation field in a scale demonstration manner, and hydrogen-oxygen fuel cells are still basically in a laboratory research stage, so that the maturity of the hydrogen-oxygen fuel cells is much higher than that of the hydrogen-oxygen fuel cells.
The patent of the utility model mainly utilizes the mature hydrogen fuel cell product, solves the application of fuel cell technique in amphibious vehicle.
SUMMERY OF THE UTILITY MODEL
The patent of the utility model provides a hydrogen fuel cell is adapted to air supply system of amphibious operating mode, has realized the normal use of hydrogen fuel cell system under water or in the anaerobic environment.
The utility model discloses the technical problem that solve adopts following technical scheme to realize: a kind of hydrogen fuel cell adapts to the air supply system of the amphibious working condition, including the hydrogen fuel cell;
the anode gas supply module comprises a hydrogen storage tank connected with an anode gas inlet of the hydrogen fuel cell;
the cathode land gas supply module comprises an air filter, an air compressor and a humidifier which are sequentially connected according to the gas inlet direction, wherein the gas outlet of the humidifier is connected with the cathode gas inlet of the hydrogen fuel cell; the air filter is used for filtering air and removing harmful substances; the air compressor is used for pressurizing air, and the humidifier is used for cooling and increasing humidity of the pressurized air;
the negative pole is air feed module under water, include the air ratio module that links to each other with hydrogen air fuel battery negative pole air inlet, with hydrogen air fuel battery tail discharge port continuous vapour and liquid separator, the oxygen storage tank and the nitrogen gas storage tank that link to each other with air ratio module respectively, vapour and liquid separator gas outlet links to each other with air ratio module, air ratio module is arranged in carrying out the ratio and adjusting the gas pressure after the ratio to hydrogen air fuel battery required pressure of work to the nitrogen gas of the oxygen in gas and the nitrogen gas storage tank that gas and liquid separator isolated. Because the pressure of the gasified nitrogen and oxygen is pressurized, and the pressure of the gas separated by the gas-liquid separator is reduced, the pressure of the mixed gas needs to be readjusted after the gas separated by the gas-liquid separator, the oxygen in the oxygen storage tank and the nitrogen in the nitrogen storage tank are mixed to meet the working requirement of the hydrogen-air fuel cell.
The utility model has the advantages that: the utility model discloses utilize ripe hydrogen fuel cell system, saved development cost and can popularize and apply, when hydrogen fuel cell system is under water and under the anaerobic condition, because can't absorb the air, the utility model discloses set up the negative pole and supply gas module under water, utilize air ratio module to carry out ratio and decompression to oxygen in the oxygen storage tank and nitrogen in the nitrogen storage tank in order to satisfy the demand of hydrogen fuel cell negative pole air feed; utilize gas-liquid separator to separate the gas-liquid of tail row, retrieve nitrogen gas and oxygen after will reacting and reuse after it is joined in marriage again to air ratio module again, because nitrogen gas can not participate in the reaction in hydrogen fuel cell, can recycle, reduced nitrogen gas carrying volume.
The technical proposal of the utility model is also that: the air filter air inlet is provided with a water immersion sensor, and the water immersion sensor is used for monitoring the position relation between the air filter air inlet and the liquid level so as to judge whether the hydrogen air fuel battery system suitable for the amphibious working condition is positioned under water or not;
the air inlet of the air filter is provided with a first oxygen concentration sensor, and the first oxygen concentration sensor is used for monitoring the oxygen content of gas at the air inlet of the air filter so as to judge whether the hydrogen fuel battery system suitable for the amphibious working condition is in an anaerobic environment. Monitoring the position relation between the air inlet of the air filter and the liquid level by using a water immersion sensor to judge whether the system is positioned underwater, if the air inlet of the air filter is positioned underwater, the air supply condition of the cathode land air supply module is not met, and the cathode land air supply module needs to be converted into the cathode underwater air supply module to supply air to the cathode of the fuel cell; the first oxygen concentration sensor is used for monitoring the oxygen content of gas at the air inlet of the air filter to judge whether the system is in an anaerobic environment, if the air inlet of the air filter is in the anaerobic environment, the air supply condition of the cathode land air supply module is not met, and the cathode land air supply module needs to be converted into the cathode underwater air supply module to supply air to the cathode of the fuel cell.
The technical proposal of the utility model is also that: the air proportioning module comprises an oxygen conveying pipeline connected with an oxygen storage tank, a nitrogen conveying pipeline connected with the nitrogen storage tank and an air conveying pipeline connected with a cathode air inlet of the hydrogen-air fuel cell, wherein an outlet of the oxygen conveying pipeline and an outlet of the nitrogen conveying pipeline are respectively connected with an inlet of the air conveying pipeline;
the oxygen conveying pipeline is provided with an oxygen control valve and an oxygen conveying pump, the nitrogen conveying pipeline is provided with a nitrogen control valve and a nitrogen conveying pump, and the air conveying pipeline is sequentially provided with a first pressure sensor and a pressure reducing valve along the airflow direction. Utilize the oxygen control valve, the delivery capacity and the pressure value of oxygen delivery pump control oxygen, utilize the nitrogen control valve, the delivery capacity and the pressure value of nitrogen delivery pump control nitrogen, realize the gaseous pressure control after the ratio and the ratio of oxygen and nitrogen gas, guarantee that the gas pressure value of relief pressure valve import department satisfies the operating requirement of relief pressure valve, can reduce pressure and make relief pressure valve output gas pressure keep at the setting value to mist through setting up the relief pressure valve, in order to satisfy fuel cell's air feed requirement.
The technical proposal of the utility model is also that: the air proportioning module further comprises a low-temperature pump, a gasifier and a buffer tank, the oxygen storage tank is a liquid oxygen storage tank, and the low-temperature pump, the gasifier and the buffer tank are sequentially arranged between the oxygen control valve and the oxygen delivery pump according to the air flow direction. The oxygen is stored in a liquid state, the oxygen carrying capacity is increased, the endurance mileage of the fuel cell is improved, the liquid oxygen is converted into gaseous oxygen by the gasifier, and the gaseous oxygen is stored by the buffer tank, so that the interruption of oxygen delivery is avoided.
The technical scheme of the utility model also: air ratio module still includes second oxygen consistency transmitter, third oxygen consistency transmitter and the air circulating pump who links to each other with vapour and liquid separator gas outlet, air circulating pump exports the pump and links to each other with air conveying pipeline entry, air circulating pump exports and is provided with third oxygen consistency transmitter between the entry with air conveying pipeline, air conveying pipeline is provided with second oxygen consistency transmitter in first pressure sensor front side. The gas separated by the gas-liquid separator is recycled and re-proportioned by arranging the air circulating pump, so that the recycling of oxygen and nitrogen is realized, the nitrogen carrying capacity is reduced, the oxygen concentration value of the recycled gas is monitored by the third oxygen concentration sensor so as to judge whether oxygen or nitrogen is supplemented, and whether the oxygen content value of the gas after proportioning meets the working requirement of the fuel cell is monitored by the second oxygen concentration sensor.
The technical scheme of the utility model also: and a secondary pressure reducing valve and a second pressure sensor are sequentially arranged between the hydrogen storage tank and the hydrogen fuel cell according to the hydrogen supply direction. And (3) reducing the pressure of the hydrogen in the hydrogen storage tank by using a secondary pressure reducing valve, supplying the hydrogen to the hydrogen fuel battery, and monitoring the pressure value of the hydrogen in real time by using a second pressure sensor.
The technical scheme of the utility model also: the hydrogen circulation pump is connected with a hydrogen outlet of the hydrogen-air fuel cell, and an outlet of the hydrogen circulation pump is connected with a hydrogen inlet of the hydrogen-air fuel cell. The hydrogen circulating pump is used for recycling the residual hydrogen after the hydrogen fuel cell reacts, which is beneficial to improving the endurance mileage of the fuel cell.
The technical scheme of the utility model also: the hydrogen-air fuel battery heat dissipation system is connected with the gasifier and used for dissipating heat of the hydrogen-air fuel battery. The gasifier needs to absorb heat to achieve the purpose of converting liquid oxygen into gaseous oxygen, and the heat dissipation system transfers heat generated by the hydrogen fuel battery to the gasifier, so that reasonable utilization of energy is achieved, and energy consumption is reduced.
The control method of the air supply system of the hydrogen-air fuel battery suitable for the amphibious working condition comprises the following steps: when the system is in an onshore environment or in an aerobic environment, starting an air filter, an air compressor and a humidifier to supply air for the cathode of the hydrogen fuel cell;
when the system is in an underwater environment or an anaerobic environment, the air proportioning module is used for proportioning oxygen in the oxygen storage tank and nitrogen in the nitrogen storage tank, and the proportioned gas is decompressed and then supplied to the cathode of the hydrogen-air fuel cell;
when the system is in an underwater environment, the gas-liquid separator is used for carrying out gas-liquid separation on the tail discharge object at the tail discharge port of the hydrogen-air fuel battery, the air proportioning module is used for carrying out proportioning and pressurization on the gas separated by the gas-liquid separator and returning the gas to the cathode gas inlet of the hydrogen-air fuel battery, so that the cyclic utilization of nitrogen is realized, the carrying amount of the nitrogen is reduced, and the weight is reduced and the cost is reduced.
The utility model discloses a main design:
1. the utility model discloses utilize ripe hydrogen fuel battery system, saved development cost and can popularize and apply, when hydrogen fuel battery system is under water and under the anaerobic condition, because can't absorb the air, the utility model discloses set up the negative pole and supply the air module under water, utilize the air ratio module to carry out the ratio and reduce pressure to oxygen in the oxygen storage tank and nitrogen gas in the nitrogen storage tank in order to satisfy the demand of hydrogen fuel battery negative pole air feed; the hydrogen storage tank is used for supplying gas to the anode of the hydrogen fuel cell, so that the hydrogen fuel cell is not influenced by an oxygen-free environment and an underwater environment;
2. in order to reduce the carrying capacity of nitrogen and oxygen, a gas-liquid separator is used for separating gas and liquid in a tail row, the residual nitrogen and oxygen after reaction are recycled and then are re-proportioned by an air proportioning module for reuse, the nitrogen cannot participate in the reaction in the hydrogen-air fuel battery, so that the nitrogen is not consumed and can be repeatedly used, the carrying capacity of the nitrogen can be reduced, and the oxygen is stored in a liquid oxygen form, so that the endurance mileage of the hydrogen-air fuel battery system is increased;
3. the utility model discloses on the basis that sets up the negative pole air feed module under water, utilize the air supply system commonly used as the land air feed module of negative pole, use air supply system directly to utilize the air to carry out the air feed to hydrogen fuel cell negative pole on land, use the negative pole under water under or under the anaerobic environment air feed module to carry out the air feed to hydrogen fuel cell negative pole, promoted the holistic continuation of the journey mileage of system.
At present, hydrogen-oxygen fuel cells are generally applied in the transportation field in a scale demonstration manner, and hydrogen-oxygen fuel cells are still basically in a laboratory research stage, so that the maturity of the hydrogen-oxygen fuel cells is far higher than that of the hydrogen-oxygen fuel cells. The system can realize the use of a mature hydrogen fuel cell system in an underwater or anaerobic environment, so that the fuel cell product can meet the application in a wider range.
Drawings
Fig. 1 is a schematic structural diagram of a gas supply system for a hydrogen-air fuel cell adapted to an amphibious working condition according to the present invention;
fig. 2 is a gas supply control flow chart of the gas supply system for the hydrogen-air fuel cell to adapt to the amphibious working condition according to the present invention;
in the figure, 1 a hydrogen fuel cell, 2 a hydrogen gas storage tank, 3 an air filter, 31 a water immersion sensor, 32 a first oxygen concentration sensor;
4, an air compressor, 5 a humidifier, 6 a gas-liquid separator, 7 an oxygen storage tank and 8 a nitrogen storage tank;
9 oxygen delivery pipe, 91 oxygen control valve, 92 oxygen delivery pump;
10 nitrogen gas delivery pipelines, 101 nitrogen gas control valves and 102 nitrogen gas delivery pumps;
11 air delivery pipe, 110 pressure reducing valve, 111 first pressure sensor, 112 second oxygen concentration sensor;
12 low-temperature pump, 13 gasifier, 14 buffer tank, 15 third oxygen concentration sensor, 16 air circulating pump, 17 hydrogen control valve, 18 two-stage pressure reducing valve, 19 second pressure sensor, 20 hydrogen circulating pump, 21 heat radiation system;
71 oxygen check valve, 81 nitrogen check valve, 161 air circulation check valve, 201 hydrogen circulation check valve.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the utility model discloses an embodiment, all other embodiments that the ordinary skilled person in the art obtained under the prerequisite of not making creative work all belong to the utility model discloses the scope of protection, the embodiment of the utility model provides an in the setting control module mainly be in order to realize automatic control function, the utility model discloses a basic function that can the implementation system equally for artificial control.
As shown in fig. 1, an air supply system for a hydrogen-air fuel cell adapted to amphibious conditions comprises:
the hydrogen fuel cell 1.
The anode gas supply module comprises a hydrogen storage tank 2 connected with an anode gas inlet of the hydrogen fuel cell 1.
The cathode land air supply module comprises an air filter 3, an air compressor 4 and a humidifier 5 which are sequentially connected according to the gas inlet direction, wherein the air outlet of the humidifier 5 is connected with the cathode air inlet of the hydrogen-air fuel battery 1.
The negative pole is air feed module under water, include the air ratio module that links to each other with 1 negative pole air inlet of hydrogen air fuel cell, with 1 tail discharge port of hydrogen air fuel cell gas-liquid separator 6 that links to each other, oxygen storage tank 7 and nitrogen gas storage tank 8 that link to each other with the air ratio module respectively, 6 gas outlet of gas-liquid separator links to each other with the air ratio module, the air ratio module is used for carrying out the ratio and adjusting the gas pressure after the ratio to 1 required pressure of work of hydrogen air fuel cell to the gas that gas-liquid separator 6 separated out, oxygen in the oxygen storage tank 7 and nitrogen gas storage tank 8.
The control module is used for controlling the cathode underwater gas supply module to supply gas to the cathode of the hydrogen fuel cell 1 when the system is in an underwater environment or in an oxygen-free environment; and is used for controlling the cathode land gas supply module to supply gas to the cathode of the hydrogen-air fuel battery 1 when the system is in an land environment or in an aerobic environment.
The air inlet of the air filter 3 is provided with a water immersion sensor 31, and the water immersion sensor 31 is used for monitoring the position relation between the air inlet of the air filter 3 and the liquid level so as to judge whether the hydrogen air fuel battery system suitable for the amphibious working condition is underwater.
The air inlet of the air filter 3 is provided with a first oxygen concentration sensor 32, and the first oxygen concentration sensor 32 is used for monitoring the oxygen content of air at the air inlet of the air filter 3 so as to judge whether the hydrogen fuel battery system suitable for the amphibious working condition is in an oxygen-free environment.
The air proportioning module comprises an oxygen conveying pipeline 9 connected with an oxygen storage tank 7, a nitrogen conveying pipeline 10 connected with a nitrogen storage tank 8 and an air conveying pipeline 11 connected with a cathode air inlet of the hydrogen-air fuel battery 1, wherein an outlet of the oxygen conveying pipeline 9 and an outlet of the nitrogen conveying pipeline 10 are respectively connected with an inlet of the air conveying pipeline 11.
The oxygen delivery pipe 9 is provided with an oxygen control valve 91 and an oxygen delivery pump 92, the nitrogen delivery pipe 10 is provided with a nitrogen control valve 101 and a nitrogen delivery pump 102, and the air delivery pipe 11 is sequentially provided with a first pressure sensor 111 and a pressure reducing valve 110 along the air flow direction.
The air proportioning module further comprises a cryogenic pump 12, a vaporizer 13 and a buffer tank 14, the oxygen storage tank 7 is a liquid oxygen storage tank, and the cryogenic pump 12, the vaporizer 13 and the buffer tank 14 are sequentially arranged between the oxygen control valve 91 and the oxygen delivery pump 92 according to the airflow direction.
The air proportioning module still includes second oxygen concentration sensor 112, third oxygen concentration sensor 15 and the air circulating pump 16 who links to each other with vapour and liquid separator 6 gas outlet, 16 exports of air circulating pump link to each other with air delivery pipeline 11 entry, be provided with third oxygen concentration sensor 15 between 16 exports of air circulating pump and the air delivery pipeline 11 entry, air delivery pipeline 11 is provided with second oxygen concentration sensor 112 in first pressure sensor 111 front side.
A hydrogen control valve 17, a secondary pressure reducing valve 18 and a second pressure sensor 19 are sequentially arranged between the hydrogen storage tank 2 and the hydrogen fuel battery 1 according to the hydrogen supply direction, and the flow and the on-off of the hydrogen output from the hydrogen storage tank 2 are controlled by the hydrogen control valve 17.
The gas supply system of the hydrogen-air fuel battery suitable for amphibious working conditions further comprises a hydrogen circulating pump 20 connected with a hydrogen outlet of the hydrogen-air fuel battery 1, and an outlet of the hydrogen circulating pump 20 is connected with a hydrogen inlet of the hydrogen-air fuel battery 1.
The gas supply system of the hydrogen air fuel battery under the amphibious working condition further comprises a heat dissipation system 21 connected with a heat dissipation port of the hydrogen air fuel battery 1, the heat dissipation system 21 is connected with the gasifier 13, and the heat dissipation system 21 is used for dissipating heat of the hydrogen air fuel battery 1.
In order to prevent water vapor from entering the oxygen storage tank 7 and the nitrogen storage tank 8, an oxygen check valve 71 and a nitrogen check valve 81 are respectively arranged at the outlet of the oxygen storage tank 7 and the outlet of the nitrogen storage tank 8; in order to prevent the reverse flow of the circulating gas, the outlet of the air circulating pump 16 and the outlet of the hydrogen circulating pump 20 are provided with an air circulating check valve 161 and a hydrogen circulating check valve 201, respectively.
The working principle is as follows: in an underwater environment, as shown in fig. 1 and 2, the positional relationship between the air intake port of the air cleaner 3 and the liquid level is monitored by the water sensor 31.
When the air inlet of the air cleaner 3 is located above the liquid level, the air cleaner 3, the air compressor 4, and the humidifier 5 are activated to supply the hydrogen fuel cell 1 with air.
When the air inlet of the air filter 3 is positioned below the liquid level, the opening degree of the oxygen control valve 91 and the opening degree of the nitrogen control valve 101 are respectively controlled to match the oxygen in the oxygen storage tank 7 and the nitrogen in the nitrogen storage tank 8 according to a set proportion, the pressure of the matched gas is adjusted by the oxygen delivery pump 92 and the nitrogen delivery pump 102 to meet the gas pressure requirement of the input end of the pressure reducing valve 110, and then the mixed gas is subjected to pressure reduction and pressure stabilization by the pressure reducing valve 110 and is supplied to the hydrogen fuel cell 1.
When the air inlet of the air filter 3 is positioned below the liquid level, gas-liquid separation is carried out on the tail gas discharged from the tail discharge port of the hydrogen-air fuel cell 1 by using the gas-liquid separator 6, the separated gas is returned to the cathode air inlet of the hydrogen-air fuel cell 1 through the air circulating pump 16, the cyclic utilization of nitrogen is realized, the oxygen content in the separated gas is monitored in real time by using the third oxygen concentration sensor 15, the oxygen storage tank 7 is opened to supplement oxygen or the nitrogen storage tank 8 is opened to supplement nitrogen according to the monitored oxygen content, whether the oxygen concentration after proportioning meets the working requirement of the hydrogen-air fuel cell 1 is monitored in real time by using the second oxygen concentration sensor 112, meanwhile, the pressure of the mixed gas at the input end of the pressure reducing valve 110 is monitored by using the first pressure sensor 111, and the pressure of the mixed gas at the input end of the pressure reducing valve 110 is regulated by using the oxygen delivery pump 92 and the nitrogen delivery pump 102, and then depressurized by a pressure reducing valve 110 to ensure that the gas delivered to the hydrogen fuel cell 1 is maintained within a pressure range to meet the operating requirements of the hydrogen fuel cell 1.
In an anaerobic environment, monitoring the position relation between an air inlet of the air filter 3 and the liquid level by using a water immersion sensor 31, and monitoring the oxygen content of gas at the air inlet of the air filter 3 by using a first oxygen concentration sensor 32; when the air inlet of the air filter 3 is located above the liquid level and the oxygen content of the gas at the air inlet of the air filter 3 is lower than the set oxygen concentration threshold, the opening degree of the oxygen control valve 91 and the opening degree of the nitrogen control valve 101 are respectively controlled to match the oxygen in the oxygen storage tank 7 and the nitrogen in the nitrogen storage tank 8 according to the set proportion, and the matched gas is supplied to the hydrogen fuel cell 1 after being subjected to pressure adjustment by the oxygen delivery pump 92, the nitrogen delivery pump 102 and the pressure reducing valve 110.
Claims (8)
1. A gas supply system of a hydrogen-air fuel cell adapted to amphibious working conditions is characterized by comprising:
a hydrogen-air fuel cell (1);
the anode gas supply module comprises a hydrogen storage tank (2) connected with an anode gas inlet of the hydrogen fuel cell (1);
the cathode land gas supply module comprises an air filter (3), an air compressor (4) and a humidifier (5) which are sequentially connected according to the gas inlet direction, wherein the gas outlet of the humidifier (5) is connected with the cathode gas inlet of the hydrogen fuel cell (1);
the cathode underwater air supply module comprises an air proportioning module connected with a cathode air inlet of a hydrogen-air fuel cell (1), a gas-liquid separator (6) connected with a tail discharge port of the hydrogen-air fuel cell (1), an oxygen storage tank (7) and a nitrogen storage tank (8) connected with the air proportioning module respectively, wherein a gas outlet of the gas-liquid separator (6) is connected with the air proportioning module, and the air proportioning module is used for proportioning oxygen in gas separated by the gas-liquid separator (6) and nitrogen in the oxygen storage tank (7) and the nitrogen in the nitrogen storage tank (8) and adjusting the gas pressure after proportioning to the pressure required by the work of the hydrogen-air fuel cell (1).
2. The air supply system for a hydrogen-air fuel cell adapted to an amphibious working condition according to claim 1, characterized in that: a water immersion sensor (31) is arranged at an air inlet of the air filter (3), and the water immersion sensor (31) is used for monitoring the position relation between the air inlet of the air filter (3) and the liquid level so as to judge whether the hydrogen fuel battery system suitable for the amphibious working condition is positioned under water;
the air inlet of the air filter (3) is provided with a first oxygen concentration sensor (32), and the first oxygen concentration sensor (32) is used for monitoring the oxygen content of air at the air inlet of the air filter (3) so as to judge whether the hydrogen fuel battery system suitable for the amphibious working condition is in an oxygen-free environment.
3. The air supply system for a hydrogen-air fuel cell adapted to an amphibious condition according to claim 1 or 2, characterized in that: the air proportioning module comprises an oxygen conveying pipeline (9) connected with an oxygen storage tank (7), a nitrogen conveying pipeline (10) connected with a nitrogen storage tank (8) and an air conveying pipeline (11) connected with a cathode air inlet of the hydrogen fuel cell (1), wherein an outlet of the oxygen conveying pipeline (9) and an outlet of the nitrogen conveying pipeline (10) are respectively connected with an inlet of the air conveying pipeline (11);
oxygen control valve (91), oxygen delivery pump (92) are set up on oxygen delivery pipeline (9), be provided with nitrogen control valve (101), nitrogen delivery pump (102) on nitrogen delivery pipeline (10), air delivery pipeline (11) are gone up and are set gradually first pressure sensor (111) and relief pressure valve (110) along the air current direction.
4. The air supply system of the hydrogen-air fuel cell adapted to the amphibious working condition according to claim 3, characterized in that: the air proportioning module further comprises a low-temperature pump (12), a gasifier (13) and a buffer tank (14), the oxygen storage tank (7) is a liquid oxygen storage tank, and the low-temperature pump (12), the gasifier (13) and the buffer tank (14) are sequentially arranged between the oxygen control valve (91) and the oxygen delivery pump (92) according to the air flow direction.
5. The air supply system of the hydrogen-air fuel cell adapted to the amphibious working condition according to claim 3, characterized in that: the air proportioning module still includes second oxygen concentration sensor (112), third oxygen concentration sensor (15) and air circulating pump (16) that link to each other with vapour and liquid separator (6) gas outlet, air circulating pump (16) export links to each other with air delivery pipeline (11) entry, be provided with third oxygen concentration sensor (15) between air circulating pump (16) export and air delivery pipeline (11) entry, air delivery pipeline (11) are provided with second oxygen concentration sensor (112) in first pressure sensor (111) front side.
6. The air supply system for a hydrogen-air fuel cell adapted to an amphibious working condition according to claim 1, characterized in that: a hydrogen control valve (17), a secondary pressure reducing valve (18) and a second pressure sensor (19) are sequentially arranged between the hydrogen storage tank (2) and the hydrogen fuel battery (1) according to the hydrogen supply direction.
7. The gas supply system for the hydrogen-air fuel cell to adapt to the amphibious working condition according to claim 1, is characterized in that: the hydrogen-air fuel cell hydrogen storage battery is characterized by further comprising a hydrogen circulating pump (20) connected with a hydrogen outlet of the hydrogen-air fuel cell (1), wherein an outlet of the hydrogen circulating pump (20) is connected with a hydrogen inlet of the hydrogen-air fuel cell (1).
8. The gas supply system for the hydrogen-air fuel cell to adapt to the amphibious condition according to claim 4, is characterized in that: the hydrogen-air fuel cell heat dissipation system is characterized by further comprising a heat dissipation system (21) connected with a heat dissipation port of the hydrogen-air fuel cell (1), wherein the heat dissipation system (21) is connected with the gasifier (13), and the heat dissipation system (21) is used for dissipating heat of the hydrogen-air fuel cell (1).
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