A mobile heating system and method based on organic liquid hydrogen storage technology

Abstract

The present invention is applicable to the technical field of mobile heating systems, and provides a mobile heating system and method based on organic liquid hydrogen storage technology, wherein the mobile heating system includes an organic liquid hydrogen storage system, a vehicle power system, a fuel cell system, and a circulating heating system. The system utilizes the safety characteristics of organic liquid hydrogen storage technology and can enter densely populated areas such as residential areas without the need for complicated approval procedures. At the same time, the use of organic liquid hydrogen storage technology in conjunction with fuel cells and electric heat conversion equipment can efficiently convert hydrogen energy into thermal energy, and this system is convenient to replenish energy, and the hydrogen-containing organic liquid replenishment operation can be completed on the spot, and can provide uninterrupted heating for a long time, thereby effectively alleviating the heating and domestic hot water supply problems in old residential areas, and can provide effective protection measures for thermal repairs.

Description

Technical Field

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

[0002] As the heating pipes in old residential areas age, the number of pipe failures and overhauls increases. In addition, the cold winter weather makes heating more sensitive, so it is necessary to use mobile heating vehicles for emergency heating and heat repairs. The supply of hot water for residents is an important part of heat supply. Currently, most hot water pipes are coupled with the secondary heat pipe network. When the pipe network fails or is under maintenance, the hot water for residents cannot be guaranteed.

[0003] In the prior art, mobile heating vehicles are also used to assist in providing hot water for residents when there is a failure or maintenance of the pipeline network. Existing mobile heating vehicles mainly include gas boiler mobile heating vehicles and electric heat storage boiler mobile heating vehicles. Among them, gas boiler mobile heating vehicles directly burn natural gas, and the exhaust gas contains sulfur, nitrogen oxides and other direct emissions, which seriously pollute the environment and require additional purification equipment. The use of electric heat storage boiler mobile heating vehicles is affected by fluctuations in electricity prices, and continuous heating is limited by the amount of heat storage, and energy cannot be replenished in time.

[0004] Therefore, a green, environmentally friendly and easy-to-use new mobile heating equipment is needed to solve the above problems. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a mobile heating system and method based on organic liquid hydrogen storage technology, 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 heating system based on organic liquid hydrogen storage technology, including an organic liquid hydrogen storage system, a vehicle power system, a fuel cell system and a circulating heating system;

[0007] The organic liquid hydrogen storage system provides hydrogen energy to the fuel cell system by controlling the release of hydrogen;

[0008] The fuel cell system converts hydrogen energy into electrical energy to form a vehicle power system, and transmits the heat energy generated during the reaction to the circulating heating system;

[0009] The vehicle power system is used to receive the electric energy generated by the fuel cell system and distribute the electric energy to the organic liquid hydrogen storage system and the circulating heating system;

[0010] The circulating heating system converts electrical energy into thermal energy by means of electric-thermal conversion and provides thermal energy to the outside.

[0011] In a further technical solution, the organic liquid hydrogen storage system comprises a hydrogen-containing organic liquid tank, a dehydrogenated organic liquid tank, an organic liquid hydrogen release unit, a hydrogen compression unit, a hydrogen control unit and an on-board hydrogen storage unit;

[0012] The hydrogen-containing organic liquid tank and the dehydrogenated organic liquid tank are both connected to an organic liquid dehydrogenation unit, which is further connected to a hydrogen compression unit, which is connected to a hydrogen control unit, which is connected to an on-board hydrogen storage unit and a fuel cell system.

[0013] According to a further technical solution, the vehicle power system includes an all-in-one DC / DC, a vehicle power unit, a power battery and an energy storage converter;

[0014] The all-in-one DC / DC is simultaneously connected to the fuel cell system, the vehicle power unit, the power battery and the energy storage converter, and the energy storage converter is also connected to the organic liquid hydrogen release unit and the hydrogen compression unit.

[0015] According to a further technical solution, the circulating heating system includes an electric heat conversion device, an air-cooled radiator, a heat exchanger, a circulating water pump, a first three-way regulating valve and a second three-way regulating valve;

[0016] Circulating cold water enters through the inlet of the circulating water pump, the outlet of the circulating water pump is connected to a second three-way regulating valve, the inlet of the electrothermal conversion device and the cold side inlet of the heat exchanger are both connected to the second three-way regulating valve, and the outlet of the electrothermal conversion device is connected in parallel with the cold side outlet of the heat exchanger;

[0017] The fuel cell system is connected to the hot side of the heat exchanger, and a first three-way regulating valve is provided on the pipeline between the fuel cell system and the hot side inlet of the heat exchanger, and is connected to the air-cooled radiator through the first three-way regulating valve, and the outlet end of the air-cooled radiator is connected to the pipeline between the fuel cell system and the hot side outlet of the heat exchanger.

[0018] According to a further technical solution, the electric heat conversion device is an air source heat pump, a PTC heater, an electric boiler, an electric heat storage boiler, an electric heating rod or an electric heating belt.

[0019] Another object of an embodiment of the present invention is to provide a control method for a mobile heating system based on organic liquid hydrogen storage technology. Based on the above mobile heating system, the startup process of the mobile heating system includes the following steps:

[0020] The mobile heating system receives a startup command from the host computer;

[0021] The system determines whether it is connected to the external power grid. If so, it will recharge the power battery. If not, it will determine whether the power battery has enough power. If so, it will jump to the next step. If not, it will continue to recharge.

[0022] 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;

[0023] If the amount of hydrogen in the on-board hydrogen storage unit is sufficient, the on-board hydrogen storage unit will supply hydrogen to the hydrogen control unit, directly start the fuel cell and start working, open the hot side flow of the heat exchanger to supply heat to the outside normally, and the system can start quickly and discharge to the outside;

[0024] Distribute hydrogen through a hydrogen control unit to supply hydrogen to the fuel cell system;

[0025] The fuel cell system starts up and generates electricity and heat. The heat is supplied to the outside through the heat exchanger, and the electricity is supplied to the equipment and electric heat conversion equipment through the vehicle's power system to supply heat to the outside.

[0026] According to a further technical solution, the external heating control process of the mobile heating system includes the following steps:

[0027] After the circulating heating system is started, it receives an external heating power request, turns on the circulating water pump, adjusts the first three-way regulating valve, opens the hot side flow of the heat exchanger, and the heat exchanger supplies heat to the outside;

[0028] During the heating period, determine whether the operating status of the fuel cell system is over-temperature. If over-temperature occurs, the air-cooled radiator intervenes to maintain a stable operating temperature.

[0029] If the fuel cell system is operating normally and not over-temperatured, determine whether the external heating power request is greater than the current heating power of the fuel cell system; if it is less than or equal to the current heating power of the fuel cell system, continue to supply heat to the outside through the heat exchanger; if it is greater than the current heating power of the fuel cell system, adjust the second three-way regulating valve and the electric heat conversion device intervenes;

[0030] The electric heat conversion equipment supplies heat to the outside, and combines with the heat exchanger to supply heat to the outside.

[0031] According to a further technical solution, the shutdown process of the mobile heating system includes the following steps:

[0032] The mobile heating system receives shutdown instructions from the upper level;

[0033] Reduce the power of the electrothermal conversion device until it drops to 0;

[0034] The system determines whether the power of the electric heat conversion device has dropped to 0. If it has dropped to 0, the fuel cell system is shut down. After the fuel cell system is shut down, the organic liquid hydrogen storage system is shut down.

[0035] After the organic liquid hydrogen storage system is shut down, the hydrogen control system stops supplying hydrogen;

[0036] Purge the organic liquid hydrogen storage system. After the purge is completed, cut off the system power supply and the shutdown is completed.

[0037] Another object of an embodiment of the present invention is to provide a mobile heating vehicle, based on the above-mentioned mobile heating system, wherein the mobile heating vehicle is a fuel cell range-extended hybrid vehicle, and is integrated with the above-mentioned mobile heating system and has all the functions of the above-mentioned mobile heating system.

[0038] The embodiment of the present invention provides a mobile heating system and method based on organic liquid hydrogen storage technology, and the beneficial effects of the system are as follows:

[0039] (1) The external heat source of the circulating heating system consists of two parts, namely the heat exchanger and the electric heat conversion device. The heat source on the hot side of the heat exchanger is the waste heat generated by the operation of the fuel cell system. The electric heat conversion device converts electrical energy into thermal energy, which greatly improves the overall efficiency and can flexibly adjust the heating status of the two heat sources according to the external heating demand;

[0040] (2) The first three-way regulating valve adjusts the flow rate of the air-cooled radiator and the hot side of the heat exchanger to ensure the stable operating temperature of the fuel cell system and the external heat energy supply; the second three-way regulating valve adjusts the flow rate of the electric heat conversion device and the cold side of the heat exchanger to control the external heat energy supply of the mobile heating system as a whole;

[0041] (3) The mobile heating system has an off-grid mode and a grid-connected mode. In the off-grid mode, the electric energy generated by the fuel cell system is supplied to the electric heat conversion device through the vehicle power system, and the heat exchanger and the electric heat conversion device supply heat to the outside. In the grid-connected mode, the external power grid is connected, the vehicle power system supplies power to the electric heat conversion device, and the electric heat conversion device can supply heat to the outside alone.

[0042] (4) By utilizing the safety characteristics of organic liquid hydrogen storage technology, the mobile heating system can enter densely populated areas such as residential areas, without the need for complicated approval procedures, to carry out thermal repairs or provide domestic hot water, thereby improving the efficiency of thermal rescue;

[0043] (5) The organic liquid hydrogen storage system, in conjunction with the fuel cell system and electric heat conversion equipment, can efficiently convert hydrogen energy into thermal energy. The system is easy to replenish, and the hydrogen-containing organic liquid can be replenished on the spot. It can provide uninterrupted heating for a long time, effectively alleviating the heating and domestic hot water supply problems in old communities, and providing effective protection measures for thermal emergency repairs. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A schematic structural diagram of a mobile heating system based on organic liquid hydrogen storage technology provided by an embodiment of the present invention;

[0045] Figure 2 A startup process of a mobile heating system based on organic liquid hydrogen storage technology provided by an embodiment of the present invention;

[0046] Figure 3 An external heating control process of a mobile heating system based on organic liquid hydrogen storage technology provided in an embodiment of the present invention;

[0047] Figure 4 A shutdown process of a mobile heating system based on organic liquid hydrogen storage technology provided by an embodiment of the present invention;

[0048] Figure 5 A partial structural schematic diagram of a mobile heating vehicle provided in an embodiment of the present invention.

[0049] 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; vehicle-mounted 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; electric heat conversion equipment 12; air-cooled radiator 13; heat exchanger 14; circulating water pump 15; first three-way regulating valve 16; second three-way regulating valve 17. DETAILED DESCRIPTION

[0050] 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.

[0051] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0052] like Figure 1 As shown, a mobile heating system based on organic liquid hydrogen storage technology provided by an embodiment of the present invention includes an organic liquid hydrogen storage system, a vehicle power system, a fuel cell system 7 and a circulating heating system;

[0053] The organic liquid hydrogen storage system provides hydrogen energy to the fuel cell system 7 by controlling the release of hydrogen;

[0054] The fuel cell system 7 converts hydrogen energy into electrical energy to form a vehicle power system, and transmits the heat energy generated during the reaction process to the circulating heating system;

[0055] The vehicle power system is used to receive the electric energy generated by the fuel cell system 7 and distribute the electric energy to the organic liquid hydrogen storage system and the circulating heating system;

[0056] The circulating heating system converts electrical energy into thermal energy by means of electric-thermal conversion and provides thermal energy to the outside.

[0057] In the embodiment of the present invention, when in use, the whole vehicle power system is first started, and the organic liquid hydrogen storage system is started and powered by the whole vehicle power system. After the organic liquid hydrogen storage system is started and the amount of hydrogen released is normal, it is supplied to the fuel cell system 7 for operation. The fuel cell system 7 converts hydrogen energy into electrical energy and supplies it to the whole vehicle power system for vehicle driving. It can also supply energy to the organic liquid hydrogen storage system and the circulating heating system.

[0058] Both hydrogenated organic liquid and dehydrogenated organic liquid are non-hazardous chemicals and can be transported as ordinary cargo at room temperature and pressure. Therefore, they can be operated independently of hydrogenation stations and gas stations. The hydrogenated organic liquid can be replenished and the dehydrogenated organic liquid can be extracted and returned to the factory for processing at suitable locations.

[0059] like Figure 1 As shown, as a preferred embodiment of the present invention, the organic liquid hydrogen storage system includes a hydrogen-containing organic liquid tank 1, a dehydrogenated organic liquid tank 2, an organic liquid hydrogen release unit 3, a hydrogen compression unit 4, a hydrogen control unit 5 and an on-board hydrogen storage unit 6;

[0060] The hydrogen-containing organic liquid tank 1 and the dehydrogenated organic liquid tank 2 are both connected to the organic liquid dehydrogenation unit 3, and the organic liquid dehydrogenation unit 3 is also connected to the hydrogen compression unit 4, and the hydrogen compression unit 4 is connected to the hydrogen control unit 5, and the hydrogen control unit 5 is connected to the vehicle-mounted hydrogen storage unit 6 and the fuel cell system 7.

[0061] In the embodiment of the present invention, when in use, the hydrogen-containing organic liquid in the hydrogen-containing organic liquid tank 1 is transported to the organic liquid dehydrogenation unit 3, and the hydrogen in the hydrogen-containing organic liquid is released through the organic liquid dehydrogenation unit 3 through the dehydrogenation reaction to generate hydrogen and supply the hydrogen compression unit 4. The dehydrogenated organic liquid after the reaction is transported to the dehydrogenated organic liquid tank 2 for recovery. The hydrogen compression unit 4 compresses the hydrogen generated by the organic liquid dehydrogenation unit 3, increases the pressure, and then 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 transports the received hydrogen to the fuel cell system 7. The hydrogen control unit 5 can also transport the hydrogen generated by the hydrogen compression unit 4 to the on-board hydrogen storage unit 6 for storage. Various functions such as hydrogen storage and hydrogen supply can be achieved through different controls. 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.

[0062] like Figure 1 As shown, as a preferred embodiment of the present invention, the vehicle power system includes an all-in-one DC / DC 8, a vehicle power unit 9, a power battery 10 and an energy storage converter 11;

[0063] The all-in-one DC / DC 8 is simultaneously connected to the fuel cell system 7 , the vehicle power unit 9 , the power battery 10 and the energy storage inverter 11 , and the energy storage inverter 11 is also connected to the organic liquid hydrogen release unit 3 and the hydrogen compression unit 4 .

[0064] In the embodiment of the present invention, when in use, the all-in-one DC / DC 8 is used for uniform distribution of DC power, which can provide power for the operation of the fuel cell system 7, and can also receive the power generated by the fuel cell system 7; it can also supply power to the power supply in the vehicle power unit 9, and receive the power feedback from the kinetic energy recovery of the vehicle, charge and store energy for the power battery 10, and can also receive the discharge of the power battery 10 to supply power to the energy storage inverter 11; it can also receive the power feedback from the energy storage inverter 11; the vehicle power unit 9 is used for charging the vehicle to move and recover part of the power by kinetic energy recovery; the power battery 10 is used for vehicle energy storage and discharge; the energy storage inverter 11 is used for AC / DC conversion and can be connected to the power grid, supplying power to the hydrogen compression unit 3, the organic liquid hydrogenation unit 4 and the circulating heating system, and can realize power storage and release through the all-in-one DC / DC 8.

[0065] In addition, when the energy storage inverter 11 is connected to the external power grid, the power battery 10 can be stored with energy through the vehicle power system without starting the fuel cell system and the organic liquid hydrogen storage system. At this time, the circulating heating system can be started separately, and the electric heat conversion equipment 12 in the circulating heating system can independently provide heat for the external circulation.

[0066] like Figure 1 As shown, as a preferred embodiment of the present invention, the circulating heating system includes an electric heat conversion device 12, an air-cooled radiator 13, a heat exchanger 14, a circulating water pump 15, a first three-way regulating valve 16 and a second three-way regulating valve 17;

[0067] Circulating cold water enters through the inlet end of the circulating water pump 15, and the outlet end of the circulating water pump 15 is connected to a second three-way regulating valve 17. The inlet of the electrothermal conversion device 12 and the cold side inlet of the heat exchanger 14 are both connected to the second three-way regulating valve 17, and the outlet of the electrothermal conversion device 12 is connected in parallel with the cold side outlet of the heat exchanger 12;

[0068] The fuel cell system 7 is connected to the hot side of the heat exchanger 14, and a first three-way regulating valve 16 is provided on the pipeline between the fuel cell system 7 and the hot side inlet of the heat exchanger 14, and is connected to the air-cooled radiator 13 through the first three-way regulating valve 16, and the outlet end of the air-cooled radiator 13 is connected to the pipeline between the fuel cell system 7 and the hot side outlet of the heat exchanger 14.

[0069] In the embodiment of the present invention, when in use, the external circulating cold water is delivered to the second three-way regulating valve 17 through the circulating water pump 15, and the proportion of the circulating cold water distributed to the electrothermal conversion device 12 and the heat exchanger 14 is adjusted by the second three-way regulating valve 17. Both can work simultaneously or separately, and after heating the circulating cold water, hot water is output. The electrothermal conversion device 12 is powered by the energy storage inverter 11 to convert electrical energy into thermal energy. The heat exchanger 14 transfers the heat energy generated by the operation of the fuel cell system 7 to the external circulating cold water. The three-way regulating valve 1 can adjust the coolant flow ratio of the hot side of the heat exchanger and the air-cooled radiator to ensure that the heat dissipation of the fuel cell system is sufficient and the operating temperature is stable.

[0070] The default position of the first three-way regulating valve 16 is that the pipeline of the air-cooled radiator 13 is open. When the fuel cell system 7 is running stably under the required power, it switches to the hot side pipeline of the heat exchanger 14 and dynamically adjusts according to the operating conditions. The default position of the second three-way regulating valve 17 is that the cold side pipeline of the heat exchanger 14 is open. As the external heating demand increases, the flow of the electric heat conversion device 12 is adjusted to increase the external power of the circulating heating system to meet the heating power demand.

[0071] The flow rate of the fuel cell coolant on the hot side of the heat exchanger 14 is controlled by the first three-way regulating valve 16. During normal operation, the heat generated by the fuel cell system 7 is transferred by the heat exchanger 14 to the external circulating water on the cold side. When an over-temperature fault occurs inside the fuel cell system 7, the first three-way regulating valve 16 begins to adjust the flow ratio between the air-cooled radiator 13 and the hot side of the heat exchanger 14. At this time, the air-cooled radiator 13 and the heat exchanger 14 simultaneously dissipate heat for the fuel cell system 7.

[0072] The flow rate of the cold side of the heat exchanger and the flow rate of the electric heat conversion device are controlled by the second three-way regulating valve 17. When the heat generated by the operation of the fuel cell system 7 meets the external heating demand, the second three-way regulating valve 17 will close the flow rate of the electric heat conversion device 12, and the heat exchanger 14 will heat the outside alone. When the heat generated by the operation of the fuel cell system 7 does not meet the external heating demand, the second three-way regulating valve 17 will open the flow rate of the electric heat conversion device 12 and adjust the flow rate ratio of the cold side of the heat exchanger 14 and the electric heat conversion device 12 in real time to meet the external heating demand.

[0073] When the heating system is shut down normally, the external heating power of the electric heat conversion device 12 is reduced. When the power drops to 0, the second three-way control valve 17 is adjusted to close the water flow of the electric heat conversion device 12, and the fuel cell system 7 is shut down. At this time, the fuel cell system 7 stops providing heat and electricity to the outside, and the first three-way control valve 16 is adjusted to close the hot side flow of the heat exchanger 14. The power battery 10 discharges externally to power the organic liquid hydrogen storage system, and the organic liquid hydrogen storage system enters the shutdown process, reducing the hydrogen production reaction temperature and pressure, etc., until the hydrogen production drops to 0, and the shutdown of the organic liquid hydrogen storage system is completed. Start the purge phase of the organic liquid hydrogen storage system, use external nitrogen to purge the organic liquid hydrogen release unit 3, the hydrogen compression unit 4 and the hydrogen control unit 5, and ensure that the inside of the pipeline is nitrogen. After the purge is completed, cut off all power supplies of the mobile heating system, cut off the external heating pipeline, and the shutdown is completed.

[0074] As a preferred embodiment of the present invention, the electric heat conversion device 12 can adopt an air source heat pump, a PTC heater, an electric boiler, an electric heat storage boiler (phase change material or solid material), an electric heating rod, an electric belt or other equipment that can convert electrical energy into thermal energy.

[0075] like Figure 2 As shown, another embodiment of the present invention provides a control method for a mobile heating system based on organic liquid hydrogen storage technology. Based on the above mobile heating system, the startup process of the mobile heating system includes the following steps:

[0076] The mobile heating system receives a startup command from the host computer;

[0077] The system determines whether the external power grid is connected. If so, the power battery 10 is recharged. If not, the system determines whether the power of the power battery 10 is sufficient. If so, the system jumps to the next step. If not, the system continues to recharge.

[0078] 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;

[0079] If the amount of hydrogen in the onboard hydrogen storage unit 6 is sufficient, the onboard hydrogen storage unit 6 supplies hydrogen to the hydrogen control unit 5, directly starts the fuel cell 10 and works, opens the heat exchanger 14, and the hot side flow is normal to supply heat to the outside, and the system can start quickly and discharge to the outside;

[0080] Distribute hydrogen through the hydrogen control unit 5 to supply hydrogen to the fuel cell system 7;

[0081] The fuel cell system 7 is started to generate electrical energy and thermal energy. The thermal energy is supplied to the outside through the heat exchanger 14, and the electrical energy is supplied to the equipment and the electric-heat conversion device 12 through the vehicle power system to supply heat to the outside.

[0082] like Figure 3As shown, as a preferred embodiment of the present invention, the external heating control process of the mobile heating system includes the following steps:

[0083] After the circulating heating system is started, it receives an external heating power request, turns on the circulating water pump 15, adjusts the first three-way regulating valve 16, opens the hot side flow of the heat exchanger 14, and the heat exchanger 14 supplies heat to the outside;

[0084] During the heating period, it is determined whether the operating state of the fuel cell system 7 is over-temperature. If it is over-temperature, the air-cooled radiator 13 intervenes to maintain a stable operating temperature;

[0085] If the fuel cell system 7 operates normally and is not overheated, determine whether the external heating power request is greater than the current heating power of the fuel cell system 7; if it is less than or equal to the current heating power of the fuel cell system 7, the heat exchanger 14 continues to supply heat to the outside; if it is greater than the current heating power of the fuel cell system 7, adjust the second three-way regulating valve 17, and the electric heat conversion device 12 intervenes;

[0086] The electric heat conversion device 12 supplies heat to the outside, and cooperates with the heat exchanger 14 to supply heat to the outside.

[0087] like Figure 4 As shown, as a preferred embodiment of the present invention, the shutdown process of the mobile heating system includes the following steps:

[0088] The mobile heating system receives shutdown instructions from the upper level;

[0089] Reducing the power of the electrothermal conversion device 12 until it drops to 0;

[0090] The system determines whether the power of the electrothermal conversion device 12 has dropped to 0. If it has dropped to 0, the fuel cell system 7 is shut down. After the fuel cell system 7 is shut down, the organic liquid hydrogen storage system is shut down.

[0091] After the organic liquid hydrogen storage system is shut down, the hydrogen control system stops supplying hydrogen;

[0092] Purge the organic liquid hydrogen storage system. After the purge is completed, cut off the system power supply and the shutdown is completed.

[0093] like Figure 5 As shown, another embodiment of the present invention provides a mobile heating vehicle, which is based on the above-mentioned mobile heating system. The mobile heating vehicle is a fuel cell range-extended hybrid vehicle and is integrated with the above-mentioned mobile heating system.

[0094] Specifically, the mobile heating vehicle includes a hydrogen-containing organic liquid tank 1, a dehydrogenated organic liquid tank 2, an organic liquid dehydrogenation unit 3, a hydrogen compression unit 4, an on-board hydrogen storage unit 6, a fuel cell system 7, an energy storage inverter 11 and a heat exchanger 14; it also includes an electric heat conversion device 12, a circulating water pump 15, a first three-way regulating valve 16 and a second three-way regulating valve 17.

[0095] The vehicle can realize all the functions of the above-mentioned mobile heating system based on organic liquid hydrogen storage technology.

[0096] 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 heating system based on organic liquid hydrogen storage technology, characterized in that: Including organic liquid hydrogen storage system, vehicle power system, fuel cell system and circulating heating system; The organic liquid hydrogen storage system provides hydrogen energy to the fuel cell system by controlling the release of hydrogen; The fuel cell system converts hydrogen energy into electrical energy to form a vehicle power system, and transmits the heat energy generated during the reaction to the circulating heating system; The vehicle power system is used to receive the electric energy generated by the fuel cell system and distribute the electric energy to the organic liquid hydrogen storage system and the circulating heating system; The circulating heating system converts electrical energy into thermal energy by means of electric-thermal conversion and provides thermal energy to the outside.

2. The mobile heating system based on organic liquid hydrogen storage technology according to claim 1 is characterized in that: The organic liquid hydrogen storage system comprises a hydrogen-containing organic liquid tank, a dehydrogenated organic liquid tank, an organic liquid hydrogen release unit, a hydrogen compression unit, a hydrogen control unit and an on-board hydrogen storage unit; The hydrogen-containing organic liquid tank and the dehydrogenated organic liquid tank are both connected to an organic liquid dehydrogenation unit, which is further connected to a hydrogen compression unit, which is connected to a hydrogen control unit, which is connected to an on-board hydrogen storage unit and a fuel cell system.

3. The mobile heating system based on organic liquid hydrogen storage technology according to claim 2 is characterized in that: The vehicle power system includes an all-in-one DC / DC, a vehicle power unit, a power battery and an energy storage converter; The all-in-one DC / DC is simultaneously connected to the fuel cell system, the vehicle power unit, the power battery and the energy storage converter, and the energy storage converter is also connected to the organic liquid hydrogen release unit and the hydrogen compression unit.

4. The mobile heating system based on organic liquid hydrogen storage technology according to claim 2 is characterized in that: The circulating heating system includes an electric heat conversion device, an air-cooled radiator, a heat exchanger, a circulating water pump, a first three-way regulating valve and a second three-way regulating valve; Circulating cold water enters through the inlet of the circulating water pump, the outlet of the circulating water pump is connected to a second three-way regulating valve, the inlet of the electrothermal conversion device and the cold side inlet of the heat exchanger are both connected to the second three-way regulating valve, and the outlet of the electrothermal conversion device is connected in parallel with the cold side outlet of the heat exchanger; The fuel cell system is connected to the hot side of the heat exchanger, and a first three-way regulating valve is provided on the pipeline between the fuel cell system and the hot side inlet of the heat exchanger, and is connected to the air-cooled radiator through the first three-way regulating valve, and the outlet end of the air-cooled radiator is connected to the pipeline between the fuel cell system and the hot side outlet of the heat exchanger.

5. The mobile heating system based on organic liquid hydrogen storage technology according to claim 4 is characterized in that: The electric heat conversion equipment is an air source heat pump, a PTC heater, an electric boiler, an electric heat storage boiler, an electric heating rod or an electric heating belt.

6. A control method for a mobile heating system based on organic liquid hydrogen storage technology, based on the mobile heating system based on organic liquid hydrogen storage technology according to claim 4 or 5, characterized in that: The startup process of the mobile heating system includes the following steps: The mobile heating system receives a startup command from the host computer; The system determines whether it is connected to the external power grid. If so, it will recharge the power battery. If not, it will determine whether the power battery has enough power. If so, it will jump to the next step. If not, it will continue to recharge. 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 amount of hydrogen in the on-board hydrogen storage unit is sufficient, the on-board hydrogen storage unit will supply hydrogen to the hydrogen control unit, directly start the fuel cell and start working, open the hot side flow of the heat exchanger to supply heat to the outside normally, and the system can start quickly and discharge to the outside; Distribute hydrogen through a hydrogen control unit to supply hydrogen to the fuel cell system; The fuel cell system starts up and generates electricity and heat. The heat is supplied to the outside through the heat exchanger, and the electricity is supplied to the equipment and electric heat conversion equipment through the vehicle's power system to supply heat to the outside.

7. The control method of the mobile heating system based on organic liquid hydrogen storage technology according to claim 6 is characterized in that: The external heating control process of the mobile heating system includes the following steps: After the circulating heating system is started, it receives an external heating power request, turns on the circulating water pump, adjusts the first three-way regulating valve, opens the hot side flow of the heat exchanger, and the heat exchanger supplies heat to the outside; During the heating period, determine whether the operating status of the fuel cell system is over-temperature. If over-temperature occurs, the air-cooled radiator intervenes to maintain a stable operating temperature. If the fuel cell system is operating normally and not over-temperatured, determine whether the external heating power request is greater than the current heating power of the fuel cell system; if it is less than or equal to the current heating power of the fuel cell system, continue to supply heat to the outside through the heat exchanger; if it is greater than the current heating power of the fuel cell system, adjust the second three-way regulating valve and the electric heat conversion device intervenes; The electric heat conversion equipment supplies heat to the outside, and combines with the heat exchanger to supply heat to the outside.

8. The control method of the mobile heating system based on organic liquid hydrogen storage technology according to claim 7 is characterized in that: The shutdown process of the mobile heating system includes the following steps: The mobile heating system receives shutdown instructions from the upper level; Reduce the power of the electrothermal conversion device until it drops to 0; The system determines whether the power of the electric heat conversion device has dropped to 0. If it has dropped to 0, the fuel cell system is shut down. After the fuel cell system is shut down, the organic liquid hydrogen storage system is shut down. After the organic liquid hydrogen storage system is shut down, the hydrogen control system stops supplying hydrogen; Purge the organic liquid hydrogen storage system. After the purge is completed, cut off the system power supply and the shutdown is completed.

9. A mobile heating vehicle, based on the mobile heating system based on organic liquid hydrogen storage technology according to any one of claims 1 to 5, characterized in that: The mobile heating vehicle is a fuel cell range-extended hybrid vehicle, and is integrated with the mobile heating system and has all the functions of the mobile heating system.

Images