Mobile charging system based on organic liquid hydrogen storage technology and control method thereof

Abstract

The invention is applicable to the technical field of mobile charging systems, and provides a mobile charging system based on an organic liquid hydrogen storage technology and a control method thereof, the mobile charging system comprises an organic liquid hydrogen storage system, an electric vehicle charging system and a fuel cell system; the organic liquid hydrogen storage system comprises a hydrogen-containing organic liquid tank, a dehydrogenation organic liquid tank, an organic liquid hydrogen desorption unit, a hydrogen compression unit, a hydrogen control unit and a vehicle-mounted hydrogen storage unit. The electric vehicle charging system comprises an all-in-one DC / DC, a whole vehicle power unit, a power battery, an energy storage converter and a direct current charging pile. According to the system, an organic liquid hydrogen storage technology and a fuel cell extended range type automobile are effectively combined, a traditional energy charging automobile can be replaced, the problems that an electric automobile is difficult to charge, queuing time is long and the like are solved through high hydrogen storage amount, high energy conversion efficiency and high safety, and hydrogen energy development is assisted.

Description

Technical Field

[0001] The present invention belongs to the technical field of mobile charging systems, and in particular relates to a mobile charging system based on organic liquid hydrogen storage technology and a control method thereof. Background Art

[0002] With the widespread popularity of electric vehicles, the load on the power grid is increasing. Vehicles need to be charged multiple times for long-distance travel and have to queue for long periods of time due to the long charging time. Charging stations have limited charging capacity and high expansion costs. Vehicles are parked for a long time and cannot operate due to lack of power. These problems are increasing.

[0003] Existing mobile charging vehicles are mostly charged by gasoline or diesel generators in combination with charging piles. Gasoline and diesel generators use traditional fossil fuels as their energy source, and have high emissions of carbon and nitrogen oxides.

[0004] As a green energy source, hydrogen can effectively solve the problem of environmental pollution. However, hydrogen molecules are small and have low density at room temperature and pressure, which means that hydrogen must be stored in high-pressure or low-temperature liquid form to barely meet the demand for use. In addition, the current high price of hydrogen storage equipment has led to high hydrogen costs, which hinders the promotion and application of hydrogen energy. In addition, hydrogen, gasoline, and diesel are currently hazardous chemicals, and entering residential areas will face safety issues, requiring approval and cumbersome procedures. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a mobile charging system based on organic liquid hydrogen storage technology and a control method thereof, aiming to solve the problems raised in the above-mentioned background technology.

[0006] The embodiment of the present invention is implemented as follows: a mobile charging system based on organic liquid hydrogen storage technology includes an organic liquid hydrogen storage system, an electric vehicle charging system and a fuel cell system; The organic liquid hydrogen storage system comprises a hydrogen-containing organic liquid tank, a dehydrogenated organic liquid tank, an organic liquid hydrogenation unit, a hydrogen compression unit, a hydrogen control unit and an on-board hydrogen storage unit, wherein the hydrogen-containing organic liquid tank and the dehydrogenated organic liquid tank are both connected to the organic liquid hydrogenation unit, the organic liquid hydrogenation unit is also connected to the hydrogen compression unit, the hydrogen compression unit is connected to the hydrogen control unit, and the hydrogen control unit is connected to the on-board hydrogen storage unit; The electric vehicle charging system includes an all-in-one DC / DC, a vehicle power unit, a power battery, an energy storage converter and a DC charging pile. The all-in-one DC / DC is simultaneously connected to the vehicle power unit, the power battery, the energy storage converter and the DC charging pile. The energy storage converter is also connected to an organic liquid hydrogen release unit and a hydrogen compression unit. The fuel cell system is connected to a hydrogen control unit and an all-in-one DC / DC.

[0007] According to a further technical solution, a radiator is further provided at the fuel cell system, and the radiator can be an air-cooled radiator.

[0008] Another object of an embodiment of the present invention is to provide a control method for a mobile charging system based on organic liquid hydrogen storage technology. Based on the above mobile charging system, the startup process of the mobile charging system includes the following steps: Step 1: The mobile charging system receives the power-on command from the host computer; Step 2: The system determines whether the external power grid is connected and recharges the power battery; if the external power grid is not connected, it determines whether the power battery has sufficient power. If so, it jumps to the next step; if not, it continues to recharge; Step 3: Determine whether the amount of hydrogen in the on-board hydrogen storage unit is sufficient. If it is insufficient, the organic liquid hydrogen release unit is started. After the start-up is completed, the organic liquid is used for dehydrogenation reaction to start hydrogen production; If the hydrogen storage unit has sufficient hydrogen, the on-board hydrogen storage unit can supply hydrogen to the hydrogen control unit, directly start the fuel cell system and start working, and the electric vehicle charging system can start quickly and discharge externally; Step 4: Distribute hydrogen through the hydrogen control unit to supply hydrogen to the fuel cell system; Step 5: The fuel cell system starts up, generating electricity and heat. The heat is absorbed by the air-cooled radiator, and the electricity is supplied to the electric vehicle charging system. Step 6: The electric vehicle charging system receives power and starts working, and the external electric vehicle is charged normally after connecting the charging gun.

[0009] According to a further technical solution, the hydrogen replenishment process of the vehicle-mounted hydrogen storage unit comprises the following steps: Step 1: The hydrogen refueling process begins. The system determines whether the external power grid is connected and recharges the power battery. If the external power grid is not connected, it determines whether the power battery has sufficient power. If so, it jumps to the next step. If not, it continues to recharge. Step 2: Determine whether the amount of hydrogen in the onboard hydrogen storage unit is sufficient. If not, start the organic liquid hydrogen release unit to produce hydrogen; Step 3: Refill the onboard hydrogen storage unit with hydrogen through the hydrogen control unit and start the fuel cell system to power the equipment; At the same time, it determines whether the power battery has enough power. If it does, the hydrogen refueling process continues. If it does not, the power grid recharges the power battery. Step 4: If the hydrogen storage capacity is sufficient, the hydrogen replenishment process is terminated; if it is insufficient, the above process is repeated.

[0010] According to a further technical solution, the shutdown process of the mobile charging system includes the following steps: Step a: The mobile charging system receives a shutdown command from the upper host; Step b: Reduce the charging power of the electric vehicle until it drops to 0; Step c: the system determines whether the charging power of the electric vehicle has dropped to 0. If it has dropped to 0, the fuel cell system is shut down, and after the shutdown is completed, the organic liquid hydrogen storage system is shut down; Step d: After the organic liquid hydrogen storage system is closed, the system stops supplying hydrogen; Step f: Purge the organic liquid hydrogen storage system. After the purge is completed, cut off the system power supply and the shutdown is completed.

[0011] The embodiment of the present invention provides a mobile charging system based on organic liquid hydrogen storage technology, and its beneficial effects are as follows: (1) The safety features of organic liquid hydrogen storage technology enable the mobile charging system to enter densely populated areas such as residential areas, business office areas, and industrial parks. The procedures are simple, which improves the efficiency of charging rescue. It can also enter residential areas without charging piles for charging operations, solving the charging problem for electric vehicle users; (2) The advantage of high hydrogen storage density of organic liquid hydrogen storage technology means that vehicles no longer rely on hydrogen refueling stations and gas stations, and can move flexibly over long distances, effectively increasing the charging rescue radius and enhancing vehicle rescue capabilities; (3) It can effectively alleviate the charging capacity issues of urban charging stations, highway charging stations, etc., increase the number of vehicles charging at the same time, and effectively reduce queue congestion. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic structural diagram of a mobile charging system based on organic liquid hydrogen storage technology provided by an embodiment of the present invention; Figure 2 A startup flow chart of a mobile charging system based on organic liquid hydrogen storage technology provided by an embodiment of the present invention; Figure 3 A hydrogen replenishment flow chart of a vehicle-mounted hydrogen storage unit in a mobile charging system based on organic liquid hydrogen storage technology provided by an embodiment of the present invention; Figure 4 A shutdown flow chart of a mobile charging system based on an organic liquid hydrogen storage technology provided by an embodiment of the present invention; Figure 5 Schematic diagram of the structure of a fuel cell range-extended van with an integrated mobile charging system.

[0013] In the attached figure: hydrogen-containing organic liquid tank 1; dehydrogenated organic liquid tank 2; organic liquid dehydrogenation unit 3; hydrogen compression unit 4; hydrogen control unit 5; on-board hydrogen storage unit 6; fuel cell system 7; all-in-one DC / DC 8; vehicle power unit 9; power battery 10; energy storage inverter 11; DC charging pile 12; radiator 13. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0015] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0016] like Figure 1 As shown, a mobile charging system based on organic liquid hydrogen storage technology provided by an embodiment of the present invention includes an organic liquid hydrogen storage system, an electric vehicle charging system and a fuel cell system 7; The organic liquid hydrogen storage system comprises a hydrogen-containing organic liquid tank 1, a dehydrogenated organic liquid tank 2, an organic liquid dehydrogenation unit 3, a hydrogen compression unit 4, a hydrogen control unit 5 and an on-board hydrogen storage unit 6, wherein the hydrogen-containing organic liquid tank 1 and the dehydrogenated organic liquid tank 2 are both connected to the organic liquid dehydrogenation unit 3, the organic liquid dehydrogenation unit 3 is also connected to the hydrogen compression unit 4, the hydrogen compression unit 4 is connected to the hydrogen control unit 5, and the hydrogen control unit 5 is connected to the on-board hydrogen storage unit 6; The electric vehicle charging system includes an all-in-one DC / DC 8, a vehicle power unit 9, a power battery 10, an energy storage converter 11 and a DC charging pile 12. The all-in-one DC / DC 8 is simultaneously connected to the vehicle power unit 9, the power battery 10, the energy storage converter 11 and the DC charging pile 12. The energy storage converter 11 is also connected to the organic liquid hydrogen release unit 3 and the hydrogen compression unit 4. The fuel cell system 7 is connected to the hydrogen control unit 5 and the all-in-one DC / DC 8 .

[0017] In the embodiment of the present invention, the hydrogen-containing organic liquid tank 1 is used to store hydrogen-containing organic liquid; the dehydrogenated organic liquid tank 2 is used to recover the dehydrogenated non-hydrogenated organic liquid; the organic liquid dehydrogenation unit 3 can release the hydrogen in the hydrogen-containing organic liquid through a dehydrogenation reaction to generate hydrogen to supply the hydrogen compression unit 4, and the required energy consumption comes from the energy storage inverter 11 of the electric vehicle charging system; the hydrogen compression unit 4 compresses the hydrogen generated by the organic liquid dehydrogenation unit 3, increases the pressure, and supplies it to the hydrogen control unit 5; the hydrogen control unit 5 receives the high-pressure hydrogen from the hydrogen compression unit 4 and the on-board hydrogen storage unit 6, and through different controls, the organic liquid dehydrogenation unit 3 or the on-board hydrogen storage unit 6 can supply hydrogen to the fuel cell system 7, and fill the on-board hydrogen storage unit 6 with hydrogen, etc.; the on-board hydrogen storage unit 6 stores hydrogen, can be hydrogenated through an external hydrogenation port, can also be hydrogenated through the hydrogen control unit 5, and can supply hydrogen to the fuel cell system 7.

[0018] The all-in-one DC / DC 8 realizes the unified distribution of DC power, supplies power for the operation of the fuel cell system 7, receives the power generated by the fuel cell system 7, supplies power to the vehicle power unit 9, receives the power feedback from the kinetic energy recovery of the vehicle, charges and stores the power battery 10, receives the discharge of the power battery 10, supplies power to the DC charging pile 12, provides power to the energy storage inverter 11, and receives the power feedback from the energy storage inverter 11; the vehicle power unit 9 is used for charging the vehicle to move and recover kinetic energy to recover part of the power; the power battery 10 is used for vehicle energy storage and discharge; the energy storage inverter 11 realizes AC / DC conversion and can be connected to the power grid, supplies power to the hydrogen compression unit 4 and the organic liquid hydrogenation unit 3, and can realize power storage and release through the all-in-one DC / DC 8; the DC charging pile 12 receives the power of the all-in-one DC / DC 8, converts it into the DC power required by the electric vehicle, and charges the electric vehicle.

[0019] The fuel cell system 7 utilizes hydrogen and air to continuously generate electricity, heat and saturated water vapor. The electricity is supplied to the electric vehicle charging system, and the saturated water vapor and other waste gases are discharged into the atmosphere through the tail exhaust. The organic liquid hydrogen storage system provides hydrogen energy to the fuel cell system 7 by controlling the release of hydrogen. The electric vehicle charging system utilizes the electricity generated by the fuel cell system 7 to charge external electric vehicles.

[0020] Specifically, when the whole system is working, the hydrogen-containing organic liquid in the hydrogen-containing organic liquid tank 1 enters the organic liquid dehydrogenation unit 3, and undergoes a dehydrogenation reaction at the reaction temperature to produce hydrogen and hydrogen-free organic liquid. The hydrogen-free organic liquid returns to the dehydrogenation organic liquid tank 2. When a certain amount is reached, the organic liquid returns to the hydrogenation plant for hydrogenation. Hydrogen enters the hydrogen compression unit 4 to increase the gas pressure and is supplied to the hydrogen control unit 5.

[0021] The hydrogen control unit 5 receives the hydrogen gas pressurized by the on-board hydrogen storage unit 6 and the hydrogen compression unit 4, and uniformly distributes the hydrogen supply. When the charging system starts to operate, the hydrogen generated by the on-board hydrogen storage unit 6 or the organic liquid hydrogen release unit 3 can be switched according to the operating state, and the external power supply can be flexibly switched. The organic liquid hydrogen release unit 3 can also be used to replenish hydrogen to the on-board hydrogen storage unit 6 when the vehicle stops, so as to charge the vehicle for driving.

[0022] In the initial stage of external charging, the organic liquid dehydrogenation unit 3 needs to start supplying energy. The hydrogen control unit 5 will use the hydrogen in the on-board hydrogen storage unit 6 to supply hydrogen to the fuel cell system 7. The electric energy generated by the fuel cell system 7 is transmitted to the electric vehicle charging system for energy distribution. The all-in-one DC / DC 8 and the energy storage converter 11 provide energy for the dehydrogenation reaction and hydrogen compression of the organic liquid dehydrogenation unit 3 and the hydrogen compression unit 4. After the organic liquid dehydrogenation unit 3 is started, the hydrogen control unit 5 cuts off the supply of the on-board hydrogen storage unit 6 and switches to the organic liquid dehydrogenation unit 3 and the hydrogen compression unit 4 to supply hydrogen to the fuel cell system 7. The hydrogen control unit 5 achieves the effect of rapid start-up of the mobile charging system by switching the hydrogen supply. The hydrogen in the on-board hydrogen storage unit 6 is used as the equipment startup function and emergency hydrogen supply. The hydrogen required for the normal operation of the equipment is supplied by the organic liquid dehydrogenation unit 3 and the hydrogen compression unit 4.

[0023] The fuel cell system 7 uses the hydrogen supplied by the hydrogen control unit and the outside air to generate electrical energy and heat energy through electrochemical reactions. The heat energy is absorbed by the air-cooled radiator to ensure the stable operating temperature of the fuel cell. The electrical energy is supplied to the electric vehicle charging system for vehicle driving, and the organic liquid hydrogen storage system is used to supply energy for electric vehicle charging.

[0024] When there is no hydrogen in the on-board hydrogen storage unit 6, the fuel cell system 7 cannot work normally. The power battery 10 can be discharged to supply starting power to the organic liquid hydrogen storage system through the all-in-one DC / DC 8 and the energy storage inverter 11. After the organic liquid hydrogen storage system is started and the hydrogen supply is normal, the fuel cell starts to operate, supplies power to the electric vehicle charging system, replenishes power for the power battery 10 and charges the external electric vehicle.

[0025] When the power battery 10 is out of power and there is no hydrogen in the on-board hydrogen storage unit 6, the external power grid can be connected to store energy for the power battery 10 through the energy storage inverter 11 and the all-in-one DC / DC 8, and the hydrogen compression unit 4 and the organic liquid hydrogen release unit 3 are powered at the same time, the organic liquid hydrogen release operation is started, and the on-board hydrogen storage unit 6 is filled with hydrogen through the hydrogen control unit 5. After the hydrogen filling is completed and the power battery 10 is fully charged, the external power grid can be disconnected, and this mobile system can operate normally.

[0026] Both hydrogen-containing organic liquid and non-hydrogen-containing organic liquid are non-hazardous chemicals and can be transported as ordinary cargo at normal temperature and pressure. Therefore, they can be operated independently of hydrogen refueling stations and gas stations. The hydrogen-containing organic liquid can be replenished and the non-hydrogen-containing organic liquid can be extracted and returned to the factory for hydrogenation at suitable locations.

[0027] like Figure 1 As shown, as a preferred embodiment of the present invention, a radiator 13 is also provided at the fuel cell system 7, and the radiator 13 can be an air-cooled radiator. The radiator 13 can absorb the heat energy generated by the fuel cell system 7 to ensure the operating temperature of the fuel cell.

[0028] like Figure 2 As shown, a control method for a mobile charging system based on organic liquid hydrogen storage technology is provided in another embodiment of the present invention. Based on the above mobile charging system, the startup process of the mobile charging system includes the following steps: Step 1: The mobile charging system receives the power-on command from the host computer; Step 2: The system determines whether the external power grid is connected and recharges the power battery 10; if the external power grid is not connected, it determines whether the power of the power battery 10 is sufficient. If it is sufficient, it jumps to the next step; if it is insufficient, it continues to recharge; Step 3: Determine whether the amount of hydrogen in the onboard hydrogen storage unit 6 is sufficient. If it is insufficient, the organic liquid hydrogen release unit 3 is started. After the start-up is completed, the organic liquid is used for dehydrogenation reaction to start hydrogen production; If the hydrogen storage unit 6 has sufficient hydrogen, the onboard hydrogen storage unit 6 can supply hydrogen to the hydrogen control unit 5, directly start the fuel cell system 7 and start working, and the electric vehicle charging system starts quickly and discharges to the outside; Step 4: Distribute hydrogen through the hydrogen control unit 5 to supply hydrogen to the fuel cell system 7; Step 5: The fuel cell system 7 is started to generate electrical energy and thermal energy. The thermal energy is absorbed by the air-cooled radiator, and the electrical energy is supplied to the electric vehicle charging system. Step 6: The electric vehicle charging system receives power and starts working, and the external electric vehicle is charged normally after connecting the charging gun.

[0029] like Figure 3 As shown, as a preferred embodiment of the present invention, the hydrogen replenishment process of the on-board hydrogen storage unit 6 includes the following steps: Step 1: The system determines whether the external power grid is connected and recharges the power battery 10; if the external power grid is not connected, it determines whether the power of the power battery 10 is sufficient. If it is sufficient, it jumps to the next step; if it is insufficient, it continues to recharge; Step 2: Determine whether the amount of hydrogen in the onboard hydrogen storage unit 6 is sufficient, and if insufficient, start the organic liquid hydrogen release unit 3 to produce hydrogen; Step 3: Replenish hydrogen to the onboard hydrogen storage unit 6 through the hydrogen control unit 5, and start the fuel cell system 7 to power the equipment; At the same time, it is determined whether the power of the power battery 10 is sufficient. If it is sufficient, the hydrogen replenishment process continues. If it is insufficient, the power grid replenishes power for the power battery 10.

[0030] Step 4: If the hydrogen storage capacity is sufficient, the hydrogen replenishment process is terminated; if it is insufficient, the above process is repeated.

[0031] like Figure 4 As shown, as a preferred embodiment of the present invention, the shutdown process of the mobile charging system includes the following steps: Step a: The mobile charging system receives a shutdown command from the upper host; Step b: Reduce the charging power of the electric vehicle until it drops to 0; Step c: the system determines whether the charging power of the electric vehicle has dropped to 0. If it has dropped to 0, the fuel cell system 7 is shut down, and after the shutdown is completed, the organic liquid hydrogen storage system is shut down; Step d: After the organic liquid hydrogen storage system is closed, the system stops supplying hydrogen; Step f: Purge the organic liquid hydrogen storage system. After the purge is completed, cut off the system power supply and the shutdown is completed.

[0032] like Figure 5 As shown, as a preferred embodiment of the present invention, a mobile charging system is integrated into a fuel cell range-extended van. Specifically, the fuel cell range-extended van includes a hydrogen-containing organic liquid tank 1, a dehydrogenated organic liquid tank 2, a hydrogen compression unit 4, a hydrogen control unit 5, an on-board hydrogen storage unit 6, a fuel cell system 7, an energy storage converter 11, and a DC charging pile 12. By mounting the components of the mobile charging system in the fuel cell range-extended van, it has all the functions of the mobile charging system.

[0033] In the embodiment of the present invention, by adding a mobile charging system to the existing fuel cell van, the vehicle's own fuel cell system is effectively utilized, and it can be flexibly moved over long distances, effectively increasing the vehicle's rescue radius and enhancing the vehicle's rescue capabilities.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mobile charging system based on organic liquid hydrogen storage technology, characterized in that: Including organic liquid hydrogen storage systems, electric vehicle charging systems, and fuel cell systems; The organic liquid hydrogen storage system comprises a hydrogen-containing organic liquid tank, a dehydrogenated organic liquid tank, an organic liquid hydrogenation unit, a hydrogen compression unit, a hydrogen control unit and an on-board hydrogen storage unit, wherein the hydrogen-containing organic liquid tank and the dehydrogenated organic liquid tank are both connected to the organic liquid hydrogenation unit, the organic liquid hydrogenation unit is also connected to the hydrogen compression unit, the hydrogen compression unit is connected to the hydrogen control unit, and the hydrogen control unit is connected to the on-board hydrogen storage unit; The electric vehicle charging system includes an all-in-one DC / DC, a vehicle power unit, a power battery, an energy storage converter and a DC charging pile. The all-in-one DC / DC is simultaneously connected to the vehicle power unit, the power battery, the energy storage converter and the DC charging pile. The energy storage converter is also connected to an organic liquid hydrogen release unit and a hydrogen compression unit. The fuel cell system is connected to a hydrogen control unit and an all-in-one DC / DC.

2. The mobile charging system based on organic liquid hydrogen storage technology according to claim 1 is characterized in that: The fuel cell system is also provided with a radiator.

3. A control method for a mobile charging system based on organic liquid hydrogen storage technology, based on the mobile charging system based on organic liquid hydrogen storage technology as claimed in claim 2, characterized in that: The startup process of the mobile charging system includes the following steps: Step 1: The mobile charging system receives the power-on command from the host computer; Step 2: The system determines whether the external power grid is connected and recharges the power battery; if the external power grid is not connected, it determines whether the power battery has sufficient power. If so, it jumps to the next step; if not, it continues to recharge; Step 3: Determine whether the amount of hydrogen in the on-board hydrogen storage unit is sufficient. If it is insufficient, the organic liquid hydrogen release unit is started. After the start-up is completed, the organic liquid is used for dehydrogenation reaction to start hydrogen production; If the hydrogen storage unit has sufficient hydrogen, the on-board hydrogen storage unit supplies hydrogen to the hydrogen control unit, directly starting the fuel cell system and working, and the electric vehicle charging system starts quickly and discharges to the outside; Step 4: Distribute hydrogen through the hydrogen control unit to supply hydrogen to the fuel cell system; Step 5: The fuel cell system starts up, generating electricity and heat. The heat is absorbed by the air-cooled radiator, and the electricity is supplied to the electric vehicle charging system. Step 6: The electric vehicle charging system receives power and starts working, and the external electric vehicle is charged normally after connecting the charging gun.

4. The control method of the mobile charging system based on organic liquid hydrogen storage technology according to claim 3 is characterized in that: The hydrogen replenishment process of the on-board hydrogen storage unit includes the following steps: Step 1: The hydrogen refueling process begins. The system determines whether the external power grid is connected and recharges the power battery. If the external power grid is not connected, it determines whether the power battery has sufficient power. If so, it jumps to the next step. If not, it continues to recharge. Step 2: Determine whether the amount of hydrogen in the onboard hydrogen storage unit is sufficient. If not, start the organic liquid hydrogen release unit to produce hydrogen; Step 3: Refill the onboard hydrogen storage unit with hydrogen through the hydrogen control unit and start the fuel cell system to power the equipment; At the same time, it determines whether the power battery has enough power. If it does, the hydrogen refueling process continues. If it does not, the power grid recharges the power battery. Step 4: If the hydrogen storage capacity is sufficient, the hydrogen replenishment process is terminated; if it is insufficient, the above process is repeated.

5. The control method of the mobile charging system based on organic liquid hydrogen storage technology according to claim 3 is characterized in that: The shutdown process of the mobile charging system includes the following steps: Step a: The mobile charging system receives a shutdown command from the upper host; Step b: Reduce the charging power of the electric vehicle until it drops to 0; Step c: the system determines whether the charging power of the electric vehicle has dropped to 0. If it has dropped to 0, the fuel cell system is shut down, and after the shutdown is completed, the organic liquid hydrogen storage system is shut down; Step d: After the organic liquid hydrogen storage system is closed, the system stops supplying hydrogen; Step f: Purge the organic liquid hydrogen storage system. After the purge is completed, cut off the system power supply and the shutdown is completed.

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