New energy power plant energy storage and feedback system

Abstract

The invention provides a new energy power plant energy storage and feedback system, and the system is characterized in that the system comprises a power generation unit which is used for generating electric energy, and the power generation unit comprises a photovoltaic power plant and / or a wind power plant; the preparation unit is used for electrolyzing water by utilizing the electric energy produced by the power generation unit to prepare hydrogen and oxygen, and the preparation unit comprises a current rectifier and a proton exchange membrane electrolytic cell; the gas storage unit is used for storing hydrogen and oxygen generated by electrolyzing water, and the gas storage unit comprises a hydrogen storage tank, an oxygen storage tank and a one-way isolation valve; the power supply unit is used for converting the stored hydrogen into electric energy and outputting the electric energy to a power grid, and the power supply unit comprises a proton exchange membrane fuel cell.

Description

Technical Field

[0001] The present invention relates to the field of new energy storage control technology, and in particular to a new energy power plant energy storage and feedback system. Background Art

[0002] At present, electricity from renewable wind and solar energy (wind turbines or photovoltaic power generation) accounts for an increasing proportion of the global power industry and continues to grow rapidly. According to data released by the National Energy Administration, my country's wind power and photovoltaic power generation reached 1.19 trillion kWh in 2022, accounting for 13.8% of the total electricity consumption in the society, an increase of 21% year-on-year, significantly higher than the average growth rate of the total electricity consumption in the society (3.6%). It can be seen that renewable electricity will occupy an important position in my country's future energy system.

[0003] However, the availability of renewable energy sources such as wind and solar energy depends largely on weather conditions, seasonal changes, and geographical distribution. They cannot fully adapt to the peak load regulation of the power grid, which easily leads to energy surplus and waste. In the first three quarters of 2022 alone, my country's abandoned wind power exceeded 19 billion kilowatts, abandoned photovoltaic power exceeded 5.9 billion kilowatts, and abandoned hydropower exceeded 13.3 billion kilowatts. The utilization rate of power generation needs to be further improved. Based on the volatility and non-continuous access to renewable energy, storing excess electricity in hydrogen through electrochemical water splitting technology can effectively solve the problem of excess energy consumption across time and space, and is a potential large-scale energy storage and hydrogen production method.

[0004] In order to solve the above problems, a new energy power plant energy storage and feedback system is proposed here. Summary of the invention

[0005] The embodiments of the present disclosure aim to solve at least one of the technical problems existing in the prior art, and provide a new energy power plant energy storage and feedback system, which prepares hydrogen and oxygen by electrolyzing water with the electric energy produced by a photovoltaic power plant and / or a wind farm through a current rectifier and a proton exchange membrane electrolyzer, and then stores the produced hydrogen and oxygen in a hydrogen storage tank and an oxygen storage tank, respectively, and converts the hydrogen into electric energy through a proton exchange membrane fuel cell when needed and feeds it back to the power grid, thereby achieving effective regulation of the instability of new energy power generation, ensuring the stability of the power grid and the efficient use of renewable energy.

[0006] In a first aspect of the present disclosure, a new energy power plant energy storage and feedback system is provided, characterized in that the system comprises:

[0007] A power generation unit for generating electric energy, wherein the power generation unit comprises a photovoltaic power plant and / or a wind power plant;

[0008] A preparation unit, used to electrolyze water to prepare hydrogen and oxygen using the electric energy produced by the power generation unit, the preparation unit comprising a current rectifier and a proton exchange membrane electrolyzer;

[0009] A gas storage unit, used to store hydrogen and oxygen generated by electrolysis of water, the gas storage unit comprising a hydrogen storage tank, an oxygen storage tank and a one-way isolation valve;

[0010] A power supply unit is used to convert the stored hydrogen into electrical energy and output it to a power grid, wherein the power supply unit comprises a proton exchange membrane fuel cell.

[0011] In combination with the first aspect, the proton exchange membrane electrolyzer is connected to the proton exchange membrane fuel cell via a circulating water tank, and is used to electrolyze pure water to produce hydrogen and oxygen.

[0012] Furthermore, the one-way isolation valve is installed between the proton exchange membrane electrolyzer and the gas storage unit to prevent gas leakage.

[0013] Furthermore, the preparation unit also includes a purification device for detecting the water quality in the circulating water tank in real time and purifying the water when the water quality does not meet the preset water quality requirements.

[0014] In combination with the first aspect, the hydrogen storage tank and the oxygen storage tank are provided with a pressure sensor and a temperature sensor for detecting the pressure and temperature in the storage tanks.

[0015] Furthermore, the system also includes a remote unit, which is electrically connected to the pressure sensor and the temperature sensor and is used to remotely monitor the pressure and temperature in the storage tank.

[0016] In combination with the first aspect, the gas storage unit further includes a pressure regulating valve and a booster air pump for regulating gas flow and pressure.

[0017] Furthermore, the pressure regulating valve is used to adjust the gas flow rate and reduce the pressure in the tank when the pressure of the hydrogen storage tank and / or the oxygen storage tank is greater than a first preset pressure threshold.

[0018] Furthermore, the booster pump is used to increase the pressure inside the tank when the pressure of the hydrogen storage tank and / or the pressure of the oxygen storage tank is less than a second preset pressure threshold.

[0019] In combination with the first aspect, the anode and cathode gas supply pipelines of the proton exchange membrane fuel cell are respectively installed with electric regulating valves for adjusting the flow rates of hydrogen and oxygen according to real-time load. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of an energy storage and feedback system for a new energy power plant according to an embodiment of the present disclosure;

[0021] Figure 2 A schematic diagram of a specific structure of a new energy power plant energy storage and feedback system according to an embodiment of the present disclosure;

[0022] Among them, 1. Wind farm; 2. Photovoltaic power plant; 3. Current rectifier; 4. Proton exchange membrane electrolyzer; 5. Oxygen storage tank; 6. Hydrogen storage tank; 7. One-way gate valve; 8. Circulating water tank; 9. One-way isolation valve; 10. One-way isolation valve; 11. Proton exchange membrane fuel cell; 12. Electric regulating valve; 13. Electric regulating valve; 14. Wiring connector; 15. Power grid. DETAILED DESCRIPTION

[0023] Here, exemplary embodiments are described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the embodiments of the present disclosure.

[0024] The terms used in the disclosed embodiments are only for the purpose of describing specific embodiments and are not intended to limit the disclosed embodiments. The singular forms of "a", "said" and "the" used in the disclosed embodiments and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0025] It should be understood that although the terms first, second, third, etc. may be used to describe various information in the disclosed embodiments, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the disclosed embodiments, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0026] like Figure 1 , which is a schematic diagram of a structure of a new energy power plant energy storage and feedback system according to an embodiment of the present disclosure. The system 100 includes:

[0027] A power generation unit 110, for generating electric energy, wherein the power generation unit 110 includes a photovoltaic power plant and / or a wind power plant;

[0028] A preparation unit 120, for preparing hydrogen and oxygen by electrolyzing water using the electric energy produced by the power generation unit 110, the preparation unit 120 comprising a current rectifier and a proton exchange membrane electrolyzer;

[0029] A gas storage unit 130, used to store hydrogen and oxygen generated by electrolysis of water, the gas storage unit 130 includes a hydrogen storage tank, an oxygen storage tank and a one-way isolation valve;

[0030] The power supply unit 140 is used to convert the stored hydrogen into electrical energy and output it to the power grid. The power supply unit 140 includes a proton exchange membrane fuel cell.

[0031] Refer to the following Figure 2 Give a detailed description of the system.

[0032] like Figure 2 The figure is a schematic diagram of the specific structure of a new energy power plant energy storage and feedback system according to an embodiment of the present disclosure.

[0033] Furthermore, the proton exchange membrane electrolyzer 4 is connected to the proton exchange membrane fuel cell 11 via a circulating water tank 8, and is used to utilize the electric energy of the wind farm 1 and the photovoltaic power plant 2 to electrolyze pure water to produce hydrogen and oxygen.

[0034] A one-way gate valve 7 is further provided between the proton exchange membrane electrolyzer 4 and the circulating water tank 8 , for controlling the water flow from the circulating water tank 8 to the proton exchange membrane electrolyzer 4 .

[0035] Specifically, the electric energy generated by the wind farm 1 and the photovoltaic power plant 2 is rectified by the current rectifier 3 and then transmitted to the proton exchange membrane electrolyzer 4. This electric energy is intermittent and fluctuates according to changes in natural conditions (such as wind speed and light intensity).

[0036] In the proton exchange membrane electrolyzer 4, electrical energy is used to electrolyze pure water. Water (H2O) is decomposed into hydrogen (H2) and oxygen (O2) under the action of the electric field.

[0037] Anode reaction: (2H2O)→(O2)+(4H+)+(4e-)

[0038] Cathode reaction: (4H+)+(4e-)→(2H2)

[0039] The generated hydrogen and oxygen enter the hydrogen storage tank 6 and the oxygen storage tank 5 respectively through pipelines.

[0040] The circulating water tank 8 stores and supplies the pure water required by the proton exchange membrane electrolyzer 4. The water consumed during the electrolysis process is replenished through the circulating water tank 8 to ensure the continuous operation of the electrolyzer.

[0041] The generated hydrogen is stored in a hydrogen storage tank, and when power generation is required, the hydrogen is transported to the proton exchange membrane fuel cell 11. The proton exchange membrane fuel cell 11 converts hydrogen and oxygen back into electrical energy through an electrochemical reaction:

[0042] Cathode reaction: (2H2)→(4H+)+(4e-)

[0043] Anode reaction: (O2)+(4H+)+(4e-)→(2H2O)

[0044] The electrical energy generated by the proton exchange membrane fuel cell 11 can be directly transmitted to the power grid or used for on-site power demand.

[0045] This method realizes the storage and reuse of renewable energy and ensures the stability of energy supply.

[0046] Furthermore, the one-way isolation valve 9 is installed between the proton exchange membrane electrolyzer 4 and the oxygen storage tank 5, and the one-way isolation valve 10 is installed between the proton exchange membrane electrolyzer 4 and the hydrogen storage tank 6 to prevent gas leakage.

[0047] In the proton exchange membrane electrolyzer 4, pure water (H2O) is electrolyzed by electric energy to generate hydrogen (H2) and oxygen (O2).

[0048] Oxygen and hydrogen are transported to their respective storage tanks through their respective outlet pipes. The one-way isolation valve 9 ensures that oxygen smoothly enters the oxygen storage tank 5 from the proton exchange membrane electrolyzer 4, while preventing the oxygen in the oxygen storage tank 5 from flowing back to the proton exchange membrane electrolyzer 4.

[0049] The one-way isolation valve 10 ensures that hydrogen flows smoothly from the proton exchange membrane electrolyzer 4 into the hydrogen storage tank 6 , while preventing the hydrogen in the hydrogen storage tank 6 from flowing back to the proton exchange membrane electrolyzer 4 .

[0050] The valve allows gas to flow in one direction only, thus avoiding gas backflow due to pressure difference or other reasons, ensuring the safety of the electrolyzer and storage tank.

[0051] Furthermore, the preparation unit 120 also includes a purification device (not shown in the figure) for real-time detection of the water quality in the circulating water tank 8 and purification when the water quality does not meet the preset water quality requirements.

[0052] Specifically, the purification device includes a water quality detection module, wherein the sensor of the water quality detection module is installed in the circulating water tank 8 to detect impurities, ion concentration, and pH value in the water in real time. The purification device also includes a data processing unit to process the data collected by the sensor and compare it with the preset water quality standard to determine whether the water quality meets the requirements. The purification device also includes a purification module, the filter of the purification module removes particulate matter and suspended matter in the water, and then removes ionic impurities in the water through the ion exchange device of the purification module to reduce the conductivity of the water. Finally, the reverse osmosis system of the purification module filters the tiny particles and soluble substances in the water through the reverse osmosis membrane to ensure the supply of high-purity water.

[0053] Furthermore, the hydrogen storage tank 6 and the oxygen storage tank 5 are provided with a pressure sensor and a temperature sensor (not shown in the figure) for detecting the pressure and temperature in the storage tanks.

[0054] Specifically, pressure sensors are used to detect the pressure inside hydrogen and oxygen storage tanks in real time. This helps ensure that the pressure of the storage tanks is maintained within a safe range and prevents safety hazards caused by excessive or low pressure.

[0055] Preferably, the pressure sensor can be used in conjunction with the pressure regulating valve and the booster pump in the system to achieve automatic control. When the pressure exceeds the preset threshold, the pressure sensor can trigger the pressure regulating valve to exhaust and reduce the pressure; when the pressure is lower than the preset threshold, the sensor can start the booster pump to increase the pressure.

[0056] Optionally, the pressure sensor can also be connected to an alarm unit. When the pressure is abnormal, an alarm is issued to notify the operator to handle it in time to prevent accidents.

[0057] Temperature sensors are used to monitor temperature changes in storage tanks. Temperatures that are too high or too low may affect the storage stability and safety of hydrogen and oxygen. The data from temperature sensors can be used to effectively manage the thermal state of storage tanks. For example, when the temperature is too high, the cooling system can be activated to cool down the tanks to ensure that hydrogen and oxygen are stored within an appropriate temperature range.

[0058] Hydrogen diffuses easily and is explosive at high temperatures, and oxygen can also cause fires at high temperatures. Therefore, temperature sensors are essential to prevent these safety risks.

[0059] Optionally, pressure and temperature sensors can transmit real-time data to a remote unit, enabling continuous monitoring of the hydrogen and oxygen storage conditions.

[0060] Optionally, a pressure sensor and a temperature sensor are installed on the top or side of the hydrogen storage tank and the oxygen storage tank, respectively, to ensure that the pressure and temperature inside the tank can be accurately detected.

[0061] Furthermore, the system also includes a remote unit (not shown in the figure), which is electrically connected to the pressure sensor and the temperature sensor and is used for remotely monitoring the pressure and temperature in the storage tank.

[0062] Specifically, the pressure sensor and the temperature sensor collect pressure and temperature data in the storage tank and convert them into electrical signals, which are transmitted to the data acquisition module of the remote unit via cables.

[0063] The data acquisition module receives the signal and converts it into a digital signal, and the processor analyzes and judges the data. The processed data is stored in the local memory and displayed in real time on the display interface.

[0064] Furthermore, the gas storage unit 130 also includes a pressure regulating valve and a booster air pump (not shown in the figure) for regulating the gas flow and pressure.

[0065] The pressure regulating valve is used to adjust the gas flow rate and reduce the pressure in the tank when the pressure of the hydrogen storage tank 6 and / or the oxygen storage tank 5 is greater than a first preset pressure threshold.

[0066] The booster pump is used to increase the pressure inside the tank when the hydrogen storage tank pressure 6 and / or the oxygen storage tank pressure 5 is less than a second preset pressure threshold.

[0067] Specifically, the pressure sensor continuously monitors the pressure in the hydrogen storage tank 6 and the oxygen storage tank 5 and transmits the pressure data to the remote unit. When it is detected that the pressure exceeds the first preset pressure threshold, the remote unit sends a signal to start the pressure regulating valve.

[0068] The pressure regulating valve automatically adjusts the gas flow according to the remote unit's instructions, releasing part of the hydrogen and / or oxygen to reduce the pressure in the tank. Once the pressure drops to a safe range, the pressure regulating valve automatically closes to restore normal operation of the system.

[0069] The booster pump is used to automatically increase the pressure in the hydrogen storage tank 6 and / or the oxygen storage tank 5 when the pressure in the tank is lower than a set second preset pressure threshold, to ensure that the system can provide sufficient gas flow when needed.

[0070] The pressure sensor continuously monitors the pressure in the hydrogen storage tank 6 and the oxygen storage tank 5, and transmits the data to the remote unit. When the pressure is detected to be lower than the second preset pressure threshold, the remote unit sends a signal to start the booster pump. The booster pump works according to the instructions of the remote unit to increase the pressure of hydrogen and / or oxygen to a set safety range. When the pressure rises back to above the second preset pressure threshold, the booster pump automatically stops working to keep the pressure in the tank within the set range.

[0071] It should be noted that those skilled in the art can set the first preset pressure threshold and the second preset pressure threshold according to actual conditions, and this embodiment does not impose any specific limitation thereto.

[0072] Furthermore, the anode and cathode gas supply pipelines of the proton exchange membrane fuel cell 11 are respectively installed with an electric regulating valve 12 and an electric regulating valve 13 for adjusting the flow of hydrogen and oxygen according to the real-time load.

[0073] The proton exchange membrane fuel cell 11 is a device that directly converts hydrogen and oxygen into electrical energy. Its basic working principle is to convert the chemical energy of hydrogen into electrical energy through a proton exchange membrane (PEM). Only water and a small amount of heat are produced during the process, which is highly efficient and environmentally friendly.

[0074] In the proton exchange membrane fuel cell 11, the supply of hydrogen and oxygen is crucial and must be adjusted in real time according to the load changes to ensure efficient and stable operation of the fuel cell. To this end, electric regulating valves are installed on the anode and cathode gas supply pipelines respectively.

[0075] According to the real-time load demand of the proton exchange membrane fuel cell 11, the electric regulating valve 13 and the electric regulating valve 12 automatically adjust the flow of hydrogen and oxygen to ensure that the fuel cell is always in the best working state. And by accurately controlling the gas flow, the power output efficiency of the fuel cell is maximized and energy waste is reduced.

[0076] Through this precise gas flow control, the system can quickly respond to load changes, maintain the stability of power output, and ensure efficient operation under different operating conditions.

[0077] Furthermore, the power supply unit 140 also includes a connector 14 connected to the fuel point to output current and a power grid 15 connected to the connector.

[0078] Specifically, the proton exchange membrane fuel cell 11 generates direct current power. The connector (14) is connected to the output current of the fuel cell. The current of the fuel cell is connected to the power grid (15) through the connector.

[0079] Through the power supply unit 140, the system effectively utilizes the stored energy and integrates it into a larger energy infrastructure to achieve sustainable energy supply and distribution.

[0080] An embodiment of the present disclosure provides a new energy power plant energy storage and feedback system. The system uses the electricity produced by a photovoltaic power plant and / or a wind farm to electrolyze water through a current rectifier and a proton exchange membrane electrolyzer to prepare hydrogen and oxygen, and then stores the produced hydrogen and oxygen in a hydrogen storage tank and an oxygen storage tank, respectively. When needed, the hydrogen is converted into electrical energy through a proton exchange membrane fuel cell and fed back to the power grid, thereby achieving effective regulation of the instability of new energy power generation, ensuring the stability of the power grid and efficient use of renewable energy.

[0081] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of the present disclosure. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0082] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0083] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this disclosure.

[0084] In the embodiments provided in the present disclosure, it should be understood that the disclosed devices / electronic devices and methods can be implemented in other ways. For example, the device / electronic device embodiments described above are merely schematic. For example, the division of modules or units is only a logical function division. There may be other division methods in actual implementation. Multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection of devices or units, which may be electrical, mechanical or other forms.

[0085] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0086] In addition, each functional unit in each embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0087] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present disclosure implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. The computer program may include computer program code, and the computer program code may be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electric carrier signals and telecommunication signals.

[0088] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present disclosure, and should all be included in the protection scope of the present disclosure.

Claims

1. A new energy power plant energy storage and feedback system, characterized in that: The system comprises: A power generation unit for generating electric energy, wherein the power generation unit comprises a photovoltaic power plant and / or a wind power plant; A preparation unit, used to electrolyze water to prepare hydrogen and oxygen using the electric energy produced by the power generation unit, the preparation unit comprising a current rectifier and a proton exchange membrane electrolyzer; A gas storage unit, used to store hydrogen and oxygen generated by electrolysis of water, the gas storage unit comprising a hydrogen storage tank, an oxygen storage tank and a one-way isolation valve; A power supply unit is used to convert the stored hydrogen into electrical energy and output it to a power grid, wherein the power supply unit comprises a proton exchange membrane fuel cell.

2. The system according to claim 1, characterized in that The proton exchange membrane electrolyzer is connected to the proton exchange membrane fuel cell through a circulating water tank and is used for electrolyzing pure water to generate hydrogen and oxygen.

3. The system according to claim 2, characterized in that The one-way isolation valve is installed between the proton exchange membrane electrolyzer and the gas storage unit to prevent gas leakage.

4. The system according to claim 2, characterized in that The preparation unit also includes a purification device for detecting the water quality in the circulating water tank in real time and purifying the water when the water quality does not meet the preset water quality requirements.

5. The system according to claim 1, characterized in that The hydrogen storage tank and the oxygen storage tank are provided with a pressure sensor and a temperature sensor for detecting the pressure and temperature in the storage tanks.

6. The system according to claim 5, characterized in that The system further comprises a remote unit, which is electrically connected to the pressure sensor and the temperature sensor and is used for remotely monitoring the pressure and temperature in the storage tank.

7. The system according to claim 1, characterized in that The gas storage unit also includes a pressure regulating valve and a booster air pump for regulating gas flow and pressure.

8. The system according to claim 7, characterized in that The pressure regulating valve is used to adjust the gas flow rate and reduce the pressure in the tank when the pressure of the hydrogen storage tank and / or the oxygen storage tank is greater than a first preset pressure threshold.

9. The system according to claim 7, characterized in that The booster pump is used to increase the pressure in the tank when the pressure of the hydrogen storage tank and / or the pressure of the oxygen storage tank is less than a second preset pressure threshold.

10. The system according to claim 1, characterized in that The anode and cathode gas supply pipelines of the proton exchange membrane fuel cell are respectively equipped with electric regulating valves for adjusting the flow rates of hydrogen and oxygen according to the real-time load.

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