Vehicle and vehicle control method

Abstract

The present invention discloses a vehicle and a control method for the vehicle, wherein the vehicle includes a liquid hydrogen gasification system, an in-vehicle air conditioning system, a fuel cell system, a vehicle system and a power battery system, wherein the liquid hydrogen gasification system includes a gas-gas gasifier and a water bath gasifier, wherein the in-vehicle air conditioning system is connected to the gas-gas gasifier, and the fuel cell system, the vehicle system and the power battery system are connected to the water bath gasifier to recover the cold of the liquid hydrogen gasification in the liquid hydrogen gasification system. By applying the above technical scheme, the utilization of vehicle cold and heat energy can be reasonably optimized, and the energy utilization rate can be improved to achieve energy conservation and emission reduction.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle manufacturing, and in particular to a vehicle using a fuel cell and a vehicle control method applied to the vehicle. Background Art

[0002] As the latest technology of new energy, fuel cell models have become an important direction for the current and future development of automobiles. Some fuel cell models have been applied to passenger cars and commercial vehicles. Most hydrogen fuel cell models use high-pressure gaseous hydrogen storage for on-board hydrogen storage applications. High-pressure gaseous hydrogen storage has problems such as low hydrogen storage density, small hydrogen storage capacity, high pressure, and high cost of high-pressure containers, which does not meet the mileage requirements of long-distance and heavy-duty models. Liquid hydrogen has the advantages of high hydrogen storage density, large on-board hydrogen storage capacity, low pressure, and low cost of hydrogen storage containers. It is more suitable for long-distance and heavy-duty vehicle application scenarios. Specifically, due to its inherent physical properties, liquid hydrogen is stored at a temperature of -253°C. During its application in the working process of fuel cells, it needs to be gasified through a gasifier. A large amount of heat energy needs to be absorbed during the gasification process, that is, a large amount of cold energy is generated.

[0003] In the related art, during the normal operation of different system components of the whole vehicle, there are working conditions where a large amount of heat energy is generated and needs to be dissipated. At the same time, the need to control the temperature of the vehicle's cab space leads to problems in the coordination and comprehensive utilization of cold and heat energy between different systems of the whole vehicle. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, one object of the present invention is to provide a vehicle that can reasonably optimize the utilization of vehicle cold and hot energy, improve energy utilization rate and achieve energy saving and emission reduction.

[0005] Another object of the present invention is to provide a vehicle control method.

[0006] A vehicle according to an embodiment of the present invention comprises a liquid hydrogen gasification system, an in-vehicle air-conditioning system, a fuel cell system, a whole vehicle system and a power battery system, wherein the liquid hydrogen gasification system comprises a gas-gas gasifier and a water bath gasifier, the in-vehicle air-conditioning system is connected to the gas-gas gasifier, the fuel cell system, the whole vehicle system and the power battery system are connected to the water bath gasifier to recover the cold energy of the liquid hydrogen gasification in the liquid hydrogen gasification system.

[0007] According to the vehicle of the embodiment of the present invention, it is possible to reasonably optimize the utilization of vehicle cold and heat energy, improve energy utilization rate and achieve energy conservation and emission reduction.

[0008] In addition, the vehicle according to the above embodiment of the present invention may also have the following additional technical features:

[0009] In some examples of the present invention, the in-vehicle air conditioning system also includes an in-cabin temperature adjustment component, a heater, a first damper, a second damper and an in-cabin air supply channel, the in-cabin air supply channel is connected to the interior space of the vehicle, the first damper is connected between the air-to-air vaporizer and the in-cabin air supply channel, the second damper is connected to the in-cabin temperature adjustment component, the heater and the in-cabin air supply channel, so that the in-cabin air supply channel selectively connects to the in-cabin temperature adjustment component and / or the heater.

[0010] In some examples of the present invention, the whole vehicle system includes a first heat exchange circuit and a first switching component, and the first switching component is connected to the water bath vaporizer and the first heat exchange circuit respectively.

[0011] In some examples of the present invention, the fuel cell system includes a second heat exchange loop and a second switching component, and the second switching component is connected to the water bath vaporizer and the second heat exchange loop respectively.

[0012] In some examples of the present invention, the power battery system includes a heat exchange channel and a third switching component, and the third switching component is respectively connected to the water bath vaporizer, the heat exchange channel and the waste heat recovery system, so that the third heat exchange circuit selectively connects the waste heat recovery system and / or the water bath vaporizer, and the waste heat recovery system is the fuel cell system or the whole vehicle system.

[0013] In some examples of the present invention, the vehicle also includes a third heat exchanger and a fourth switching component, the third heat exchanger cooperates with the in-vehicle air-conditioning system for heat exchange, the fourth switching component is connected to the water bath vaporizer and the third heat exchanger, and the fourth switching component is connected to at least one of the power battery system, the fuel cell system and the whole vehicle system, so that the third heat exchanger is selectively connected to the water bath vaporizer, the whole vehicle system, the power battery system or the fuel cell system.

[0014] In some examples of the present invention, the gas-to-gas gasifier includes a first hydrogen channel and a first airflow channel that cooperate with each other for heat exchange, the first hydrogen channel is used to connect to a liquid hydrogen storage tank, and the first airflow channel is connected to the in-vehicle air conditioning system.

[0015] In some examples of the present invention, the water bath vaporizer includes a second hydrogen channel and a liquid flow channel for heat exchange, the second hydrogen channel is used to connect to a liquid hydrogen storage tank, and the liquid flow channel is connected to the fuel cell system, the vehicle system and the power battery system.

[0016] According to an embodiment of the present invention, a vehicle control method includes: obtaining an operating mode and an ambient temperature of the in-vehicle air-conditioning system; controlling the first damper and the second damper according to the operating mode and the ambient temperature, wherein, in a cooling mode, if the ambient temperature is higher than a first preset temperature, the first damper connects the gas-gas vaporizer and the cabin air supply passage, and the second damper connects the cabin temperature regulating component and the cabin air supply passage; if the ambient temperature is lower than a second preset temperature, the first damper is closed, and the first preset temperature is higher than the second preset temperature; in a heating mode, if the ambient temperature is lower than a third preset temperature, the first damper is closed, and the second damper connects the heater and the cabin air supply passage, and the fuel cell system cooperates with the cabin air supply passage for heat exchange.

[0017] According to the vehicle control method of the embodiment of the present invention, by controlling the operation of different valve components, the comprehensive utilization of cold and heat energy of various systems is achieved to achieve energy saving effect.

[0018] In some examples of the present invention, the vehicle control method includes: obtaining the temperature of the fuel cell; controlling the second switching component according to the temperature of the fuel cell, and if the temperature of the fuel cell is higher than a fourth preset temperature, controlling the second switching component to connect the water bath vaporizer to the second heat exchange circuit; if the temperature of the fuel cell is not higher than a fifth preset temperature, controlling the second switching component to disconnect the water bath vaporizer from the second heat exchange circuit.

[0019] In some examples of the present invention, the vehicle control method includes: obtaining the temperature of the whole vehicle system; controlling the first switching component according to the temperature of the whole vehicle system, wherein, if the temperature of the whole vehicle system is higher than a sixth preset temperature, controlling the first switching component to connect the water bath vaporizer to the first heat exchange circuit; if the temperature of the whole vehicle system is not higher than a seventh preset temperature, controlling the first switching component to disconnect the water bath vaporizer from the first heat exchange circuit.

[0020] In some examples of the present invention, the control method of the vehicle includes: obtaining the temperature of the power battery; controlling the third switching component according to the temperature of the power battery, wherein, if the temperature of the power battery is higher than an eighth preset temperature, controlling the third switching component to connect the water bath vaporizer to the heat exchange channel; if the temperature of the power battery is not higher than a ninth preset temperature, controlling the third switching component to disconnect the water bath vaporizer from the heat exchange channel.

[0021] In some examples of the present invention, the control method also includes: obtaining the temperature of the power battery; controlling the third switching component according to the temperature of the power battery, wherein, if the temperature of the power battery system is lower than a tenth preset temperature, the third switching component is controlled to connect the waste heat recovery flow path with the heat exchange flow channel; if the temperature of the power battery system is higher than an eleventh preset temperature, the third switching component is controlled to disconnect the waste heat recovery flow path from the heat exchange flow channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of the structure of a vehicle according to some embodiments of the present invention.

[0023] Figure 2 Schematic diagrams of the structures of vehicles according to other embodiments of the present invention.

[0024] Figure 3 Schematic diagram of the structure of the in-vehicle air conditioning system of some embodiments of the present invention.

[0025] Figure 4 Schematic diagram of the structure of a fuel cell system according to some embodiments of the present invention.

[0026] Figure 5 Schematic diagram of the structure of the first heat exchange circuit of some embodiments of the present invention.

[0027] Reference numerals:

[0028] 100. Vehicle; 10. Liquid hydrogen gasification system; 11. First air flow channel; 12. Water bath gasifier; 13. Gas-gas gasifier; 17. Liquid hydrogen storage tank; 18. Hydrogen storage tank; 101. Hydrogen storage system outlet; 19a. Manual valve; 19b. Battery valve; 20. In-vehicle air conditioning system; 21. First damper; 211. First position of first damper 21; 212. Second position of first damper 21; 25. Blower; 22. In-cabin air supply channel; 27a. First heat exchanger; 26. Compressor; 27b. Second heat exchanger; 27c. Third heat exchanger; 23. Third air flow channel; 28. Heater; 29. ​​Second damper; 24. Fourth air flow channel; 30. Battery system system; 31. fuel cell system; 312. fuel cell engine radiator; 311. fuel cell engine; 313. battery engine radiator; 314. fourth damper; 32. power battery system; 321. power battery; 40. vehicle system; 42. first heat exchange loop; 421. vehicle radiator; 422. accessory radiator; 423. motor controller radiator; 424. motor radiator; 50. water pump; 61. first three-way battery valve; 62. second three-way battery valve; 63. third three-way battery valve; 64. fourth three-way battery valve; 65. fifth three-way battery valve; 66. sixth three-way battery valve; 67. seventh three-way battery valve; 68. eighth three-way battery valve. DETAILED DESCRIPTION

[0029] At present, liquid hydrogen storage and supply systems are mainly used in the aerospace field, and are rarely used in the automotive field. Liquid hydrogen fuel cell vehicles are still in the early stage of technical verification and exploration. The utilization of cold and hot energy of the whole vehicle is still in the early stage of independent technical research, and there is no comprehensive cold and hot energy utilization architecture and solution for the whole vehicle. The liquid hydrogen system used in the aerospace field has different application scenarios from those for vehicles. Therefore, there are concepts and principles in structural design and system design that are different from those in the automotive environment. It cannot be directly borrowed in the automotive environment. At present, the development of hydrogen fuel vehicle models using liquid hydrogen as an energy storage method at home and abroad is just in the initial stage, and the comprehensive utilization of cold and hot energy of the whole vehicle is still in the exploratory state and experimental verification stage.

[0030] Therefore, there are at least the following problems with current hydrogen fuel cell vehicles: 1. Most current fuel cell vehicles use high-pressure gaseous hydrogen storage, and there is no liquid hydrogen gasification cold energy to be used; 2. In some liquid hydrogen fuel cell vehicle models that are being studied, the liquid hydrogen gasifier is designed separately, and the gasification cold energy is released into the environment, causing waste. At the same time, the thermal energy of the entire vehicle is required for heating, which causes energy loss of the entire vehicle under some working conditions. 3. Fuel cells generate a large amount of heat during operation and cannot dissipate heat. The entire vehicle needs to be matched with a radiator with a larger area, which makes the layout difficult; 4. The entire vehicle's air conditioning system is heavily loaded and energy-intensive in the high-temperature environment of summer, which greatly affects the vehicle's driving range. The above reasons have led to certain technical difficulties in the application of liquid hydrogen in the entire vehicle, high energy consumption of the entire vehicle, and limited driving range, which restricts the development of hydrogen fuel cell models, especially the promotion of medium and heavy-duty transport vehicle application scenarios.

[0031] To this end, the present invention mainly provides a technical solution for a comprehensive utilization system of cold and heat energy of a whole vehicle matching a liquid hydrogen fuel cell vehicle model. Aiming at the on-board environment of the liquid hydrogen fuel cell vehicle and combining the requirements and characteristics of the relevant systems of the whole vehicle, the cold and heat energy related systems of the whole vehicle are designed. By utilizing the characteristics of the cold energy of liquid hydrogen gasification, a rational design is carried out in terms of ensuring safety and energy saving, so as to solve the problems of comprehensive utilization of cold and heat energy of liquid hydrogen fuel cell vehicles and the whole vehicle, and improve the comprehensive performance of the whole vehicle, saving energy and reducing emissions.

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0033] Combination Figures 1 to 5 The vehicle 100 according to the embodiment of the present invention includes a liquid hydrogen gasification system 10, an in-vehicle air conditioning system 20, a battery system 30 and a whole vehicle system 40, wherein the liquid hydrogen gasification system 10 includes a gas-gas gasifier 13 and a water bath gasifier 12, wherein the gas-gas gasifier 13 can use airflow to transmit energy so as to transfer heat energy to the liquid hydrogen gasification system 10 to gasify liquid hydrogen and recover cold energy in the process of liquid hydrogen gasification; the water bath gasifier 12 can use liquid to transmit energy so as to transfer heat energy to the liquid hydrogen gasification system 10 to gasify liquid hydrogen and recover cold energy in the process of liquid hydrogen gasification.

[0034] The in-vehicle air conditioning system 20 is connected to the gas-to-gas vaporizer 13 , and the fuel cell system 31 , the whole vehicle system 40 and the power battery system 32 are connected to the water bath vaporizer 12 to recover the cold energy of the liquid hydrogen vaporization in the liquid hydrogen vaporization system 10 .

[0035] According to the vehicle 100 of the embodiment of the present invention, by connecting the liquid hydrogen gasification system 10 with the in-vehicle air conditioning system 20, the battery system 30, and the vehicle system 40, the cold and heat energy utilization of the vehicle 100 can be reasonably optimized, the energy utilization rate can be improved, and energy conservation and emission reduction can be achieved. Among them, the use of the gas-gas vaporizer 13 can use the airflow to recover the cold energy in the liquid hydrogen gasification process, so as to facilitate the temperature adjustment of the space in the vehicle; the use of the water bath vaporizer 12 can use the liquid flow to recover the cold energy in the liquid hydrogen gasification process, so as to facilitate the temperature adjustment of other systems, which can improve the gasification efficiency of liquid hydrogen, effectively recover cold energy, improve energy utilization, and save energy and protect the environment.

[0036] Among them, the in-vehicle air conditioning system 20 can provide cooling or heating for the cab of the vehicle 100 to improve driving comfort; the whole vehicle system 40 may include one or more of the accessories such as the motor and the controller, and the whole vehicle system 40 may maintain the operating environment of the whole vehicle system 40, and may improve the performance of the vehicle 100. The battery system 30 can provide energy for the vehicle 100, and the battery system 30 may include a fuel cell system 31 and a power battery system 32. The battery system 30 has a heat exchange device, and the heat exchange device of the battery system 30 can exchange heat for the battery system 30 to maintain the operating environment of the battery system 30. The in-vehicle air conditioning system 20 is connected to the gas-gas vaporizer 13 to use the air flow channel to recover the cold of the liquid hydrogen gasification in the liquid hydrogen gasification system 10 from the gas-gas vaporizer 13, and at least one of the battery system 30 and the whole vehicle system 40 is connected to the water bath vaporizer 12 to use the liquid flow channel to recover the cold of the liquid hydrogen gasification in the liquid hydrogen gasification system 10 from the water bath vaporizer 12. That is, in the present invention, the cold energy of liquid hydrogen gasification in the liquid hydrogen gasification system 10 can be recovered through the gas-gas gasifier 13 and the water bath gasifier 12 .

[0037] The liquid hydrogen gasification system 10 may further include a liquid hydrogen storage tank 17 and a hydrogen storage tank 18. The liquid hydrogen storage tank 17 may store liquid hydrogen in the vehicle. The gas-gas vaporizer 13 may include a first hydrogen channel and a first gas flow channel 11 that are heat exchange matched, and the water bath vaporizer 12 includes a second hydrogen channel and a liquid flow channel that are heat exchange matched. The liquid hydrogen in the liquid hydrogen storage tank 17 may be sent to the hydrogen storage tank 18 after passing through the first hydrogen channel and the second hydrogen channel. The in-vehicle air conditioning system 20, the fuel cell system 31, the vehicle system 40, and the power battery system 32 may be used to accelerate the gasification of liquid hydrogen, and at the same time recover the cold energy in the process of liquid hydrogen gasification. Specifically, the liquid hydrogen gasification system 10 can be connected to the in-vehicle air conditioning system 20 to use the cold energy in the liquid hydrogen gasification system 10 for the in-vehicle air conditioning system 20, thereby providing cooling to the cab; the liquid hydrogen gasification system 10 can also be connected to the battery system 30 and the in-vehicle air conditioning system 20, and the cold energy of the liquid hydrogen gasification system 10 can dissipate heat for the battery system 30, while the waste heat of the fuel cell can also provide heat for the liquid hydrogen gasification system 10, achieving rapid gasification of liquid hydrogen, thereby achieving comprehensive utilization of energy. At the same time, the heat energy generated by other systems can also be exchanged through the liquid hydrogen gasification system 10, achieving comprehensive utilization of energy of more than 100 systems of the vehicle, solving the problem of comprehensive utilization of cold and heat energy of the whole vehicle, and improving the comprehensive performance of the whole vehicle. Among them, the battery system 30 can include a fuel cell system 31 and a power battery system 32.

[0038] like Figure 1 and Figure 3 In some embodiments of the present invention, the in-vehicle air conditioning system 20 includes a first damper 21 and an in-cabin air supply passage 22, and the first damper 21 is connected between the gas-gas vaporizer 13 and the in-cabin air supply passage 22. That is, the cold energy recovered from the gas-gas vaporizer 13 can be transported to the first damper 21 and enter the in-cabin air supply passage 22, and the cold or heat is transported from the in-cabin air supply passage 22 to the interior of the vehicle 100 to improve driving comfort. In this way, by setting the in-cabin air supply passage 22, the energy of the liquid hydrogen gasification system 10 can be converted into cold air or hot air for adjusting the temperature of the interior space of the vehicle 100, thereby realizing the rational use of energy.

[0039] Among them, combined Figure 1 The liquid hydrogen gasification system 10 has a gas-gas gasifier 13. The gas-gas gasifier 13 may include a first hydrogen channel and a first airflow channel 11 that are heat exchange matched. The first hydrogen channel is suitable for connecting to a liquid hydrogen storage tank 17 and for supplying hydrogen to a fuel cell. The first airflow channel 11 is heat exchange connected to the first hydrogen channel, and the first airflow channel is connected to the in-vehicle air conditioning system. The cold energy in the liquid hydrogen gasification process can be recovered for use by the vehicle 100, and it is conducive to achieving full utilization of energy. The first airflow channel 11 of the gas-gas gasifier 13 is connected to the first air supply channel 22 in the cabin.

[0040] In addition, the liquid hydrogen gasification system 10 has a water bath vaporizer 12, which may include a second hydrogen channel and a liquid flow channel for heat exchange. The second hydrogen channel is suitable for connecting to a liquid hydrogen storage tank 17 and for supplying hydrogen to a fuel cell. The liquid flow channel is connected to the second hydrogen channel by heat exchange, and the liquid flow channel connects the fuel cell system, the vehicle system and the power battery system.

[0041] Combination Figure 3 Further, the in-vehicle air conditioning system 20 further includes an in-cabin temperature adjustment component, a heater 28 and a second damper 29. Specifically, the second damper 29 is connected between the in-cabin temperature adjustment component, the heater 28 and the in-cabin air supply passage 22. The in-cabin temperature adjustment component and the heater 28 can provide hot air or cold air to the in-cabin air supply passage 22 through the second damper 29. The in-cabin air supply passage 22 is connected to the interior space of the vehicle 100. The first damper 21 is connected between the gas-gas vaporizer 13 and the in-cabin air supply passage 22. The second damper 29 connects the in-cabin temperature adjustment component, the heater 28 and the in-cabin air supply passage 22, so that the in-cabin air supply passage 22 selectively connects the in-cabin temperature adjustment component and / or the heater 28. In other words, the in-vehicle air conditioning system 20 can use the energy of the liquid hydrogen gasification system 10 to adjust the in-vehicle temperature, and can also adjust the in-vehicle temperature through the in-cabin temperature adjustment component and the heater 28 in the system, thereby improving the flexibility and functionality of the vehicle 100.

[0042] Combination Figure 1According to the vehicle 100 of the embodiment of the present invention, the cabin temperature adjustment component may include a first heat exchanger 27a, a compressor 26, and a second heat exchanger 27b, and the first heat exchanger 27a, the compressor 26, and the second heat exchanger 27b are connected to form a circulation loop. The in-vehicle air conditioning system 20 has a third air flow channel 23 that cooperates with the second heat exchanger 27b for heat exchange, and the third air flow channel 23 is connected to the in-cabin air supply channel 22. Specifically, the first heat exchanger 27a, the second heat exchanger 27b and the compressor 26 can form a heat exchange system, and the third air flow channel 23 is connected to the in-cabin air supply channel 22, and the cold or heat converted by the heat exchanger can be transported from the third air flow channel 23 to the in-cabin air supply channel 22 and then to the interior space of the vehicle 100, that is, cold air or hot air is blown out, thereby realizing the cooling or heating mode of the in-vehicle air conditioning system 20. The in-vehicle air conditioning system 20 has a fourth air flow channel 24 that cooperates with the heater 28 for heat exchange. The fourth air flow channel 24 is connected to the cabin air supply channel 22, and a second damper 29 is provided between the third air flow channel 23 and the fourth air flow channel 24 and the cabin air supply channel 22. The heater 28 can generate heat to provide a heat source for the in-vehicle air conditioning system 20. For example, when the vehicle 100 is started at a low temperature, the heater 28 can play a preheating function and can also be used for heating the cab. Specifically, the heat of the heater 28 can enter the cabin air supply channel 22 through the fourth air flow channel 24 and then enter the interior space of the vehicle 100 for heating. In the present invention, by connecting the battery system 30 to the in-vehicle air conditioning system 20, the in-vehicle air conditioning system 20 can also use the waste heat of the fuel cell to heat the cab. In this way, at some ambient temperatures, turning off the heater 28 can also achieve a heating effect, which can improve energy utilization and achieve an energy-saving effect.

[0043] Combination Figure 3 Optionally, the in-vehicle air conditioning system 20 may further include a blower 25, which is connected between the first damper 21 and the in-cabin air supply passage 22. The blower 25 may send cold air or hot air out from the in-cabin air supply passage 22 through the blower 25 and then to the interior space of the vehicle 100, thereby improving the driving comfort of the vehicle 100 and facilitating energy saving.

[0044] Combination Figure 1 and Figure 3According to some embodiments of the vehicle 100 of the present invention, the gas-gas vaporizer 13 includes a first air flow channel 11 and a first hydrogen channel, and the in-vehicle air conditioning system 20 includes a first damper 21, a second damper 29, a blower 25, a first heat exchanger 27a, a second heat exchanger 27b, a third heat exchanger 27c, a compressor 26, a heater 28, a second air flow, a third heat exchange channel and a fourth heat exchange channel. The first air flow channel 11 is connected to the in-vehicle air conditioning system 20. Specifically, the first air flow channel 11 is connected to the first damper 21, and the first damper 21, the blower 25 and the cabin air supply channel 22 are connected in sequence; the second damper 29 is connected between the second air flow channel, the third air flow channel 23 and the cabin air supply channel 22, and the heater 28 is connected to the fourth air flow channel 24. Among them, the third air flow channel 23 and the fourth air flow channel 24 can be connected to the cabin air supply channel 22 to connect the interior space of the vehicle 100.

[0045] In actual operation, the in-vehicle air conditioner can realize cooling and heating modes. In hot summer weather, the in-vehicle air conditioner uses cooling mode, and introduces the cold energy generated by the liquid hydrogen gasification system 10 at the air inlet of the cab air conditioner blower 25 through the first damper 21, thereby reducing the air inlet temperature of the air conditioner and reducing the power consumption of the air conditioner compressor 26. Alternatively, the cold energy of the liquid hydrogen gasification system 10 can be introduced through the water pump 50, the first three-way battery valve 61, the second three-way battery valve 62, and the third heat exchanger 27c to further reduce the air temperature, which is conducive to reducing the cab temperature. At some ambient temperatures, the compressor 26 can even be turned off to reduce the power consumption of the compressor 26 and improve the energy utilization rate of the entire vehicle. When the weather is cold in winter, the air conditioner in the vehicle uses the heating mode, the first damper 21 is closed, the cold energy of the liquid hydrogen gasification system 10 is isolated, and the waste heat of the fuel cell is used through the third heat exchanger 27c, the water pump 50, the first three-way battery valve 61, and the second three-way battery valve 62 to heat the cab of the entire vehicle, which can reduce the power consumption of the PTC. Under certain ambient temperatures, the PTC of the entire vehicle can even be turned off to improve the energy utilization rate of the entire vehicle.

[0046] Combination Figure 3 Optionally, the first heat exchanger 27a may be a condenser, the second heat exchanger 27b may be an evaporator, the third heat exchanger 27c may be a cab cold and hot heat exchanger, and the heater 28 may be a PTC heater.

[0047] Combination Figure 1 and Figure 4In some embodiments of the present invention, the fuel cell system 31 includes a second heat exchange loop and a second switching component, and the second switching component is respectively connected to the water bath vaporizer 12 and the second heat exchange loop to connect or disconnect the water bath vaporizer 12 with the second heat exchange loop. Thus, the heat energy generated by the second heat exchange loop can enter the water bath vaporizer 12 through the second switching component to optimize the gasification efficiency and effect of liquid hydrogen, and the water bath vaporizer 12 can be used to provide cold energy to the second heat exchange loop to maintain the operating environment of the fuel cell system 31, so as to provide a relatively stable working environment for the fuel cell system 31, improve the stability of the battery operation, and help improve energy utilization.

[0048] Combination Figure 1 and Figure 2 The second switching component may include a third three-way battery valve 63 and a fourth three-way battery valve 64 .

[0049] In addition, the vehicle 100 further includes a third heat exchanger 27c and a fourth switching assembly, the third heat exchanger 27c cooperates with the in-vehicle air conditioning system 20 for heat exchange, the fourth switching assembly is connected to the water bath vaporizer and the third heat exchanger, and the fourth switching assembly is connected to at least one of the power battery system, the fuel cell system and the whole vehicle system, so that the third heat exchanger is selectively connected to the water bath vaporizer, the whole vehicle system, the power battery system or the fuel cell system. Thus, the comprehensive utilization of the heat of the whole vehicle can be achieved.

[0050] For example, the fourth switching assembly is respectively connected to the fuel cell system 31, the third heat exchanger 27c and the water bath vaporizer 12, so that the third heat exchanger 27c is selectively connected to the fuel cell system 31 and / or the water bath vaporizer 12. The third heat exchanger 27c can be connected to the water bath vaporizer 12, and a water pump 50, a first three-way battery valve 61 and a second three-way battery valve 62 are provided between the water bath vaporizer 12 and the third heat exchanger 27c.

[0051] Combination Figure 1 and Figure 4Optionally, the fuel cell system 31 includes a fuel cell engine radiator 312, a fuel cell engine 311 and a water pump 50, and the fuel cell engine radiator 312, the fuel cell engine 311 and the water pump 50 are connected in series to form a second heat exchange loop. Specifically, the combustion battery engine can provide energy for the vehicle 100, the combustion battery engine radiator 313 can dissipate heat for the engine, and the radiator can take away the heat in the water pump 50, thereby achieving a heat dissipation effect to ensure that the combustion battery engine can operate stably. Further, the water bath vaporizer 12 is connected to the second heat exchange loop, and the second heat exchange loop is connected to the vehicle system 40. In this way, the water bath vaporizer 12 can exchange heat with the second heat exchange loop, for example, take away the heat generated by the battery system 30, and achieve a cooling effect. At the same time, in special weather, the waste heat of the second heat exchange loop can also be used to heat the vehicle system 40 to provide heat for its operation, so that the heat of the battery system 30 can be fully applied to other systems that require thermal energy, which is conducive to energy conservation and emission reduction.

[0052] In actual application, when the ambient temperature is high, the fuel cell introduces the cold energy generated by the liquid hydrogen gasification system 10 through the fourth damper 314 to reduce the temperature of the fuel cell air inlet. The thermal energy of the fuel cell can be exchanged with the liquid hydrogen gasification system 10 through the third three-way battery valve 63 and the fourth three-way battery valve 64, and the liquid hydrogen cold energy is used to dissipate the heat of the battery system 30, while the waste heat of the fuel cell is used to heat the gasifier. Reduce the volume of the radiator and the gasifier of the fuel cell system 31.

[0053] More specifically, the first damper 21 has a first position 211 and a second position 212 that can be switched (see Figure 3 ), the second damper 29 and the fourth damper 314 may also be provided with a switchable first position 211 and a switchable second position 212, but the present invention is not limited thereto.

[0054] Combination Figure 1 and Figure 2 Optionally, the gas-gas gasifier 13 further includes a first airflow channel 11, and the first airflow channel 11 is connected to the fuel cell engine 311, so that the energy of the gas-gas gasifier 13 can be heat-exchanged with the fuel cell engine 311 through the first airflow channel 11. For example, the cold energy of the gas-gas gasifier 13 can be used to cool the fuel cell.

[0055] Combination Figure 1 and Figure 5Further, the vehicle system 40 includes a first heat exchange loop 42 and a first switching component, and the first switching component is connected to the water bath vaporizer 12 and the first heat exchange loop 42 respectively, so that the water bath vaporizer 12 is connected to or disconnected from the first heat exchange loop 42. In this way, when the first switching component is connected to the water bath vaporizer 12, the energy of the first heat exchange loop 42 can be heat exchanged or recovered with the water bath vaporizer 12, thereby improving energy utilization. In conjunction with the figure, the first switching component can be the seventh three-way battery valve 67 and the eighth three-way battery valve 68.

[0056] Combination Figure 5 Optionally, the vehicle system 40 includes a vehicle radiator 421, a water pump 50, an accessory radiator 422, a motor controller radiator 423, and a motor radiator 424 connected in series to form a first heat exchange loop 42. The vehicle radiator 421, the water pump 50, the accessory radiator 422, the motor controller radiator 423, and the motor radiator 424 are connected in series to form the first heat exchange loop 42. Specifically, the components in the vehicle system 40 can be used to control the vehicle or provide power to the vehicle 100, etc., wherein the water pump 50 is connected to the vehicle radiator 421, the motor controller radiator 423, and the motor radiator 424 to dissipate heat for accessories such as the vehicle motor or controller, so as to improve operational stability and increase the service life of each component. Further, the first heat exchange loop 42 is connected to the water bath vaporizer 12, so that the vehicle system 40 can perform heat exchange with the water bath vaporizer 12, which can avoid energy loss and improve the comprehensive energy utilization effect.

[0057] Combination Figure 5 Specifically, the seventh three-way battery valve 67 and the eighth three-way battery valve 68 are used to cool the vehicle motor, controller and accessory system using the cold energy of the water bath vaporizer 12 of the liquid hydrogen gasification system 10.

[0058] Combination Figures 1 to 5 Furthermore, the power battery system 32 includes a heat exchange channel and a third switching component, and the third switching component is respectively connected to the water bath vaporizer 12, the heat exchange channel and the waste heat recovery system, so that the third heat exchange loop is selectively connected to the waste heat recovery system or the water bath vaporizer 12, wherein the waste heat recovery system is the fuel cell system 31 or the vehicle system 40. Specifically, the third switching component can connect the heat exchange channel with the water bath vaporizer 12 and the waste heat recovery channel, so that the heat exchange channel can not only exchange heat with the liquid flow channel, but also transport the waste heat of the heat exchange channel to the waste heat recovery system, so as to fully utilize the energy. Among them, the waste heat recovery system is the second heat exchange loop or the first heat exchange loop 42. See Figure 1 and Figure 2 , Figure 1 The structure in which the heat exchange channel is connected to the second heat exchange circuit and the liquid flow channel through the third switching assembly is shown; Figure 2The heat exchange channel is connected to the first heat exchange loop 42 and the liquid flow channel through the third switching component. Optionally, the heat exchange channel can also be connected to the heat exchange channel, the second heat exchange loop and the first heat exchange loop 42 to achieve comprehensive utilization of energy. Figure 2 , the third switching component can be a ninth three-way battery valve and a thirteenth three-way battery valve.

[0059] Combination Figure 1 Optionally, the battery system 30 includes a heat exchange channel, wherein the heat exchange channel is connected to the water bath vaporizer 12 .

[0060] Optionally, the heat exchange channel can also be connected to the second heat exchange loop. That is, the battery heat exchange channel can be connected to the water bath vaporizer 12 to perform heat exchange with the water bath vaporizer 12, and the heat exchange channel can also be connected to the second heat exchange loop, so that the heat exchange channel can perform heat exchange with the second heat exchange loop and the water bath vaporizer 12, which can improve the heat exchange effect of the power battery 321, thereby improving energy utilization.

[0061] For example, the heat exchange flow channel is connected to the water bath vaporizer 12, and the cold energy in the water bath vaporizer 12 can cool the heat exchange flow channel. At some special temperatures, the heat exchange flow channel is connected to the second heat exchange loop, and the waste heat of the second heat exchange loop can be used to heat the heat exchange flow channel or the entire vehicle to improve energy utilization.

[0062] Specifically, when the ambient temperature is low, the power battery 321 is heated through the water pump 50, the fifth three-way battery valve 65, and the sixth three-way battery valve 66, using the waste heat of the fuel cell, or using the waste heat of the vehicle motor, controller and accessory systems.

[0063] When the ambient temperature is high or the temperature of the power battery 321 is high, the power battery 321 is cooled down by using the cold energy of the water bath vaporizer 12 through the water pump 50 , the fifth three-way battery valve 65 , and the sixth three-way battery valve 66 .

[0064] Combination Figures 1 to 5According to the vehicle 100 of the embodiment of the present invention, by connecting the liquid hydrogen gasification system 10 with the in-vehicle air conditioning system 20, the driving comfort of the whole vehicle is improved. In the high temperature environment in summer, the cold energy of liquid hydrogen gasification is fully utilized to control the temperature of the whole vehicle in the cab, reduce the air conditioning load of the whole vehicle, and reduce the energy consumption of the whole vehicle. At the same time, a low-power whole vehicle air conditioning system can be used, or the air conditioning system can be cancelled to reduce costs; by connecting the liquid hydrogen gasification system 10 with the battery system 30 and the whole vehicle system 40, the cold energy of liquid hydrogen gasification can be fully utilized to improve the heat dissipation capacity of the fuel cell system 31, reduce the volume and cost of the fuel cell heat dissipation system, solve the space problem of the whole vehicle radiator 421, and reduce the difficulty of heat dissipation system design and system cost, which is especially more conducive to matching the medium and heavy-duty long-distance vehicles with high-power fuel cell systems 31. In low temperature environments such as winter, the thermal energy of the fuel cell can be used to heat the liquid hydrogen gasification device, improve the working efficiency of the gasifier, improve the heat dissipation effect of the fuel cell, and achieve effective coordinated matching of the cold and heat energy of the whole vehicle. This can achieve reasonable optimization of the utilization of cold and heat energy of the whole vehicle, make full use of the energy of the whole vehicle, reduce the energy consumption of the whole vehicle (i.e., hydrogen consumption), and increase the driving range. This technology is suitable for hydrogen fuel cell vehicles that use liquid hydrogen as fuel, especially medium and heavy-duty vehicles 100. At the same time, this technology can also be applied to passenger vehicles 100.

[0065] Combination Figure 1 and Figure 2 , according to the vehicle 100 of some embodiments of the present invention, one end of the gas-gas vaporizer 13 is connected to the liquid hydrogen storage tank 17 through a manual valve 19a and / or a battery valve 19b.

[0066] It should be noted that the other end of the hydrogen storage tank can be connected to the hydrogen storage system outlet 101 , and the hydrogen storage system outlet 101 can be connected to the hydrogen inlet of the battery system 30 .

[0067] Combination Figure 2 In a vehicle 100 according to other embodiments of the present invention, the water bath vaporizer 12 can be directly connected to the second heat exchange circuit and the heat exchange channel of the battery system 30 and the first heat exchange circuit 42 of the whole vehicle system 40, wherein the second heat exchange circuit can also be connected in parallel with the first heat exchange circuit 42 to improve the comprehensive energy utilization effect.

[0068] Of course, it is also possible that the battery heat exchange channel is located between the second heat exchange loop and the first heat exchange loop 42, and the second heat exchange loop, the first heat exchange loop 42 and the battery heat exchange channel are respectively connected, and a control valve is set on the connecting pipeline to control the connection relationship between the three, that is, it can be determined how to connect according to actual operating conditions, so as to improve energy utilization.

[0069] The vehicle 100 according to the embodiment of the present invention absorbs a large amount of heat energy during the liquid hydrogen gasification process and generates a large amount of cold energy for the entire vehicle. The liquid hydrogen gasification is a physical process, and the gasification process does not consume energy, so the liquid hydrogen gasification cold energy can be reasonably utilized, which is beneficial to saving the energy of the entire vehicle; and the liquid hydrogen gasification process also requires a large amount of heat to complete, and the heat generated during the operation of other systems of the entire vehicle is just provided for hydrogen gasification.

[0070] The present invention also provides a control method for the vehicle 100 .

[0071] Combination Figures 1 to 5 , the control method of the vehicle 100 according to the embodiment of the present invention can be applied to the aforementioned vehicle 100, including: obtaining the operation mode and ambient temperature of the in-vehicle air-conditioning system 20, and controlling the first damper 21 and the second damper 29 according to the operation mode and the ambient temperature, wherein, in the cooling mode, if the ambient temperature is higher than the first preset temperature, the first damper 21 connects the air-to-air vaporizer 13 and the cabin air supply channel 22, and the second damper 29 connects the cabin temperature adjustment component and the cabin air supply channel 22; if the ambient temperature is lower than the second preset temperature, the first damper 21 is closed, and the first preset temperature is higher than the second preset temperature; in the heating mode, if the ambient temperature is lower than the third preset temperature, the first damper 21 is closed, the second damper 29 connects the heater 28 and the cabin air supply channel 22, and the fuel cell system 31 cooperates with the cabin air supply channel 22 for heat exchange. That is to say, the first damper 21 and the second damper 29 can be controlled according to the ambient temperature to adjust the temperature inside the vehicle. By obtaining the temperature of each system and controlling the second switching component, the first switching component and the third switching component, the cold and hot energy between the combustion battery, the vehicle system 40 and the power battery 321 can be reasonably distributed and comprehensively utilized.

[0072] According to the control method of the vehicle 100 of the embodiment of the present invention, by controlling the operation of different valve components, the comprehensive utilization of cold and hot energy of each system is achieved to achieve energy saving effect.

[0073] It should be noted that the ambient temperature can be the temperature inside the vehicle or the temperature outside the vehicle.

[0074] Combination Figure 3Optionally, controlling the first damper 21 and the second damper 29 according to the ambient temperature includes: obtaining the operation mode and the ambient temperature of the in-vehicle air-conditioning system 20; controlling the first damper 21 and the second damper 29 according to the operation mode and the ambient temperature, wherein, in the cooling mode, if the ambient temperature is higher than the first preset temperature, the first damper 21 connects the first air flow channel 11 and the cabin air supply channel 22, and the second damper 29 connects the cabin temperature adjustment component and the cabin air supply channel 22; if the ambient temperature is lower than the second preset temperature, the first damper 21 is closed; if the ambient temperature is between the first preset temperature and the second preset temperature, the first damper 21 and the second damper 29 are adjusted according to demand, and the first preset temperature is higher than the second preset temperature; in the heating mode, if the ambient temperature is lower than the third preset temperature, the first damper 21 is closed, the second damper 29 connects the heater 28 and the cabin air supply channel 22, and the second heat exchange circuit cooperates with the cabin air supply channel 22 for heat exchange. Specifically, the first damper 21 can be connected to the liquid hydrogen gasification system 10, and the second damper 29 can be connected to the cabin temperature adjustment component and the heater 28. The first damper 21 and the second damper 29 can be adjusted according to different ambient temperatures or the user's desired operating mode. While ensuring comfort, the energy generated by the liquid hydrogen gasification system 10 or other systems can be reasonably utilized to adjust the driving temperature, thereby achieving energy-saving effects.

[0075] Optionally, the control method of the vehicle 100 also includes: obtaining the temperature of the fuel cell, and controlling the second switching component according to the temperature of the fuel cell. If the temperature of the fuel cell is higher than the fourth preset temperature, the second switching component is controlled to connect the water bath vaporizer 12 to the second heat exchange circuit; if the temperature of the fuel cell is not higher than the fifth preset temperature, the first switching component is controlled to disconnect the water bath vaporizer 12 from the second heat exchange circuit, which can improve the heat exchange effect of the fuel cell system 31, help maintain a stable battery operating environment, and thus improve battery performance.

[0076] Combination Figure 5 Optionally, the control method of the vehicle 100 also includes: obtaining the temperature of the whole vehicle system 40, and controlling the first switching component according to the temperature of the whole vehicle system 40. If the temperature of the whole vehicle system 40 is higher than the sixth preset temperature, the first switching component is controlled to connect the water bath vaporizer 12 to the first heat exchange loop 42; if the temperature of the whole vehicle system 40 is not higher than the seventh preset temperature, the first switching component is controlled to disconnect the water bath vaporizer 12 from the first heat exchange loop 42.

[0077] When used, the first switching component can be controlled according to the temperature of the vehicle system 40 , and the temperature of the vehicle system 40 can be controlled by controlling the first switching component to connect or disconnect the first heat exchange loop 42 and the water bath vaporizer 12 .

[0078] Combination Figure 4Optionally, the control method of the vehicle 100 also includes: obtaining the temperature of the power battery 321, and controlling the third switching component according to the temperature of the power battery 321, wherein, if the temperature of the power battery 321 is higher than the eighth preset temperature, the third switching component is controlled to connect the water bath vaporizer 12 to the heat exchange flow channel; if the temperature of the power battery 321 is not higher than the ninth preset temperature, the third switching component is controlled to disconnect the water bath vaporizer 12 from the heat exchange flow channel.

[0079] When applied, the third switching component can be controlled according to the temperature of the power battery 321. When the third switching component is turned on, the water bath vaporizer 12 and the heat exchange channel can be connected to exchange heat in the heat exchange channel, which is beneficial to maintaining the operating temperature of the power battery 321 and improving the operating stability.

[0080] Combination Figure 4 Optionally, the control method also includes: obtaining the temperature of the power battery 321, and controlling the third switching component according to the temperature of the power battery 321, wherein, if the temperature of the power battery 321 is lower than the tenth preset temperature, the third switching component is controlled to connect the waste heat recovery flow path with the heat exchange flow path; if the temperature of the power battery 321 is higher than the eleventh preset temperature, the third switching component is controlled to disconnect the waste heat recovery flow path from the heat exchange flow path.

[0081] That is to say, the power battery 321 also includes a waste heat recovery flow path and a third switching component that controls the on and off of the waste heat recovery flow path. When used, the third switching component can be controlled to connect the heat exchange flow path with the waste heat recovery flow path according to the temperature of the power battery 321, so that the heat exchange flow path can exchange heat with the fuel cell system 31 or the whole vehicle system 40, thereby improving energy utilization.

[0082] A vehicle 100 and a control method of the vehicle 100 according to a specific embodiment of the present invention will be described below with reference to the accompanying drawings.

[0083] Based on the comprehensive cold and heat utilization system and system components of the vehicle 100 in the figure, the sensor-related information of the vehicle and the system is collected through the vehicle energy management controller, combined with the vehicle working conditions. Information is exchanged with the vehicle controller VCU, the power battery 321MS controller, the fuel cell FCU controller, the liquid hydrogen system controller, and the vehicle air-conditioning controller. According to the different cold and heat requirements of different system modules, the information of the cold and heat energy management of the integrated vehicle is shared, and the cold and heat modules of the vehicle are completed to work normally under different working conditions and different application environments by controlling each execution component and the battery valve 19b in the system. Optimization ensures that the vehicle 100 operates safely, reliably, and with low energy consumption, improves the driving range of the vehicle 100, and saves energy and reduces emissions.

[0084] The intelligent control strategy for comprehensive utilization of cold and heat energy of the liquid hydrogen fuel cell vehicle mainly includes: a liquid hydrogen gasification system 10, an in-vehicle air conditioning system 20, a fuel cell system 31, a vehicle system 40 and a power battery system 32. Specifically, the liquid hydrogen gasification system 10 has a gas-gas vaporizer 13 and a water bath vaporizer 12, and the in-vehicle air conditioning system 20 includes a first damper 21, a second damper 29, an in-cabin air supply channel 22, an in-cabin temperature adjustment component and a heater 28. The fuel cell system 31 includes a second heat exchange loop and a second switching component (a third three-way battery valve 63 and a fourth three-way battery valve 64). The vehicle system 40 includes a first heat exchange loop 42 and a first switching component (a seventh three-way battery valve 67 and an eighth three-way battery valve 68).

[0085] The power battery system 32 includes a heat exchange flow channel and a third switching component (a ninth three-way battery valve and a thirteenth three-way battery valve). The vehicle 100 also includes a third heat exchanger 27c and a fourth switching component (a first three-way battery valve 61 and a second three-way battery valve 62). Among them, the vehicle system 40 also includes a vehicle controller VCU, a power battery 321 BMS controller, a fuel cell FCU controller, a liquid hydrogen system controller, an air conditioning controller, etc.

[0086] It should be noted that the three-way battery valve can have a flow regulation function and a three-way cut-off function.

[0087] The control method of the vehicle 100 according to the embodiment of the present invention mainly includes the following functions: relying on the vehicle energy management controller, the vehicle 100 liquid hydrogen gasification system 10, the in-vehicle air conditioning system 20, the fuel cell system 31, the power battery system 32 and the vehicle system 40 and other cold and hot system components can be intelligently and comprehensively controlled based on the working conditions and scene requirements of the vehicle 100, while ensuring safety, function and performance. Specifically, the vehicle energy management controller exchanges information with the vehicle 100 controller VCU, the power battery 321MS controller, the fuel cell FCU controller, the liquid hydrogen gasification system 10 controller, etc., and controls the various system (or function) module components of the vehicle 100 directly or through other controllers, and completes the comprehensive utilization and control of the cold and hot energy of multiple systems of the vehicle 100.

[0088] More specifically, the vehicle 100 energy integrated management module performs information collection through the vehicle 100 and the hot and cold module status and the driver's intention. The collected information is controlled by the program to control the actuators in the hot and cold system working execution module of the vehicle 100, such as the control motor, the battery valve 19b, etc., to meet the requirements of the vehicle 100 cab and various systems for the hot and cold of the vehicle 100, and realize the intelligent hot and cold control function of the vehicle 100.

[0089] Among them, the vehicle 100 energy manager can, according to the temperature requirements of the vehicle 100 cab and different systems, use the control method to give priority to the use of the cold energy of the liquid hydrogen gasification system 10 and the thermal energy of the fuel cell system 31. When the cold energy of the liquid hydrogen gasification system 10 is insufficient and the thermal energy of the fuel cell is insufficient, the cabin temperature adjustment component and the heater 28 heating system are used to supplement them, so as to minimize the energy consumption of the vehicle 100 while ensuring the comfort and safety of the vehicle 100.

[0090] The following is an explanation of the control method of the vehicle 100 in the high temperature environment, low temperature environment and normal temperature environment working modes:

[0091] Control method of high temperature environment working mode:

[0092] In summer or when the ambient temperature is higher than 30°C (calibrable), and the vehicle 100 energy manager collects the driver's signal to turn on the air conditioner, the first damper 21 is controlled to the first position 211, and the second damper 29 is controlled to the second position 212, so as to introduce liquid hydrogen gasification cold energy and reduce the power consumption of the air conditioner. When the temperature is lower than 15°C (calibrable), the first damper 21 is controlled to the second position 212, and the use of liquid hydrogen gasification cold energy is turned off. When the temperature is between 15°C and 30°C (calibrable), the position of the first damper 21 is controlled to preferentially use liquid hydrogen gasification cold energy to adjust the cab temperature, and the insufficient part is adjusted by the air conditioning compressor 26 system to adjust the cab temperature.

[0093] When the temperature of the fuel cell system 31 reaches 60°C (calibrable) or above and the fuel cell needs to dissipate heat, the energy manager of the vehicle 100 opens and adjusts the third three-way battery valve 63 and the fourth three-way battery valve 64 according to the needs of the vehicle 100, switches to the cold energy utilization mode, and controls the opening of the two three-way valves according to the target water temperature required by the vehicle 100 to control the water temperature of the fuel cell system 31. The cold energy of the liquid cooling system is used first to reduce energy consumption, and the insufficient part is supplemented by increasing the fan speed of the fuel cell cooling system. When the temperature of the fuel cell system 31 is lower than 60°C (calibrable), the energy manager of the vehicle 100 closes the third three-way battery valve 63 and the fourth three-way battery valve 64.

[0094] When the temperature of the power battery system 32 exceeds 36°C (calibrable), the energy manager of the vehicle 100 controls the opening of the fifth three-way battery valve 65 and the sixth three-way battery valve 66, and switches to the cold energy utilization mode. Liquid hydrogen cold energy is used to cool the power battery 321. When the temperature of the power battery system 32 is lower than 20°C (calibrable), the fifth three-way battery valve 65 and the sixth three-way battery valve 66 are closed.

[0095] When the temperature of the vehicle system 40 (such as the motor, controller and accessory water circuit of the vehicle 100) exceeds 60°C (calibrable), the energy manager of the vehicle 100 controls the opening of the seventh three-way battery valve 67 and the eighth three-way battery valve 68, and switches to the cold energy utilization mode. Liquid hydrogen cold energy is used to cool the motor water circuit system of the vehicle 100. When the temperature is lower than ℃ (calibrable), the seventh three-way battery valve 67 and the eighth three-way battery valve 68 are closed.

[0096] Control method of low temperature environment working mode:

[0097] In winter or when the temperature is below 0°C (calibrable), when the vehicle 100 turns on the heating mode, the vehicle 100 energy management controller controls the first damper 21 to the second position 212, and turns off the cab cold energy utilization mode. The second damper 29 is controlled to the second position 212, switching to the heat energy utilization mode, and the first three-way battery valve 61 and the second three-way battery valve 62 are controlled to the heat energy utilization mode, using the fuel cell waste heat to heat the vehicle 100 cab, giving priority to using the fuel cell waste heat, reducing the vehicle 100 PTC power consumption, and the insufficient part is supplemented by the vehicle 100 PTC.

[0098] When the temperature of the power battery system 32 is lower than 5°C (calibrable), the fifth three-way battery valve 65 and the sixth three-way battery valve 66 are opened, and the system switches to the heat energy utilization mode to use the waste heat of the fuel cell to heat the power battery 321. When the temperature is higher than ℃, the fifth three-way battery valve 65 and the sixth three-way battery valve 66 are closed.

[0099] Control method of normal temperature working mode: give priority to utilizing the cold energy of the liquid hydrogen gasification system 10, the heat energy of the fuel cell system 31, and the heat energy of the vehicle system 40 to optimize the temperature of the cab environment and the temperature of the power battery 321. Ensure that the cab temperature is controlled between 20℃-26℃ (calibrable), and the temperature of the power battery 321 is controlled between 25℃-35℃ (calibrable).

[0100] The cold energy of the liquid hydrogen gasification system 10 is preferentially used to cool the fuel cell system 31 and the vehicle system 40, reducing the fan speed of the two systems and reducing energy consumption. At the same time, the heat of the fuel cell system 31 and the vehicle system 40 is used to provide energy for the liquid hydrogen gasification system 10 to gasify the liquid hydrogen.

[0101] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0102] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0103] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0104] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0105] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A vehicle, characterized in that: The invention comprises a liquid hydrogen gasification system, an in-vehicle air conditioning system, a fuel cell system, a whole vehicle system and a power battery system, wherein the liquid hydrogen gasification system comprises a gas-gas gasifier and a water bath gasifier, the in-vehicle air conditioning system is connected to the gas-gas gasifier, the fuel cell system, the power battery system and the whole vehicle system are connected to the water bath gasifier to recover the cold energy of liquid hydrogen gasification in the liquid hydrogen gasification system; the in-vehicle air conditioning system comprises an in-cabin temperature adjustment component, a heater, a first damper, a second damper and an in-cabin air supply channel, the in-cabin air supply channel is connected to the interior space of the vehicle, the first damper is connected between the gas-gas gasifier and the in-cabin air supply channel, the second damper is connected to the in-cabin temperature adjustment component, the heater and the in-cabin air supply channel, so that the in-cabin air supply channel selectively connects to the in-cabin temperature adjustment component and / or the heater; the whole vehicle system comprises a first heat exchange circuit and a first switching component, the first switching component is respectively connected to the water bath gasifier and the first switching component. A heat exchange circuit is connected, the fuel cell system includes a second heat exchange circuit and a second switching component, the second switching component is respectively connected to the water bath vaporizer and the second heat exchange circuit, the power battery system includes a heat exchange channel and a third switching component, the third switching component is respectively connected to the water bath vaporizer, the heat exchange channel and the waste heat recovery system, so that the third heat exchange circuit is selectively connected to the waste heat recovery system and / or the water bath vaporizer, the waste heat recovery system is the fuel cell system or the whole vehicle system, the vehicle also includes a third heat exchanger and a fourth switching component, the third heat exchanger is heat exchanged with the in-vehicle air conditioning system, the fourth switching component is connected to the water bath vaporizer and the third heat exchanger, and the fourth switching component is connected to at least one of the power battery system, the fuel cell system and the whole vehicle system, so that the third heat exchanger is selectively connected to the water bath vaporizer, the whole vehicle system, the power battery system or the fuel cell system.

2. The vehicle according to claim 1, characterized in that The gas-gas vaporizer comprises a first hydrogen channel and a first air flow channel for heat exchange, the first hydrogen channel is used to connect to the liquid hydrogen storage tank, and the first air flow channel is connected to the in-vehicle air conditioning system; And / or, the water bath vaporizer includes a second hydrogen channel and a liquid flow channel for heat exchange, the second hydrogen channel is used to connect to a liquid hydrogen storage tank, and the liquid flow channel is connected to the fuel cell system, the power battery system and the whole vehicle system.

3. A vehicle control method according to claim 1, characterized in that: include: Obtaining the operating mode and ambient temperature of the in-vehicle air conditioning system; controlling the first damper and the second damper according to the operating mode and the ambient temperature, Wherein, in the cooling mode, if the ambient temperature is higher than the first preset temperature, the first damper connects the gas-gas vaporizer and the cabin air supply passage, and the second damper connects the cabin temperature adjustment component and the cabin air supply passage; if the ambient temperature is lower than the second preset temperature, the first damper is closed, and the first preset temperature is higher than the second preset temperature; In the heating mode, if the ambient temperature is lower than a third preset temperature, the first damper is closed, the second damper connects the heater and the cabin air supply passage, and the fuel cell system cooperates with the cabin air supply passage for heat exchange.

4. A vehicle control method according to claim 1, characterized in that: include: Acquiring the temperature of the vehicle system; controlling the first switching component according to the temperature of the vehicle system, Among them, if the temperature of the whole vehicle system is higher than the sixth preset temperature, the first switching component is controlled to connect the water bath vaporizer to the first heat exchange circuit; if the temperature of the whole vehicle system is not higher than the seventh preset temperature, the first switching component is controlled to disconnect the water bath vaporizer from the first heat exchange circuit.

5. A vehicle control method according to claim 1, characterized in that: include: Get the temperature of the fuel cell; controlling the second switching component according to the temperature of the fuel cell, If the temperature of the fuel cell is higher than the fourth preset temperature, the second switching component is controlled to connect the water bath vaporizer to the second heat exchange circuit; if the temperature of the fuel cell is not higher than the fifth preset temperature, the second switching component is controlled to disconnect the water bath vaporizer from the second heat exchange circuit.

6. A vehicle control method according to claim 1, characterized in that: include: Acquiring the temperature of the power battery; controlling the third switching component according to the temperature of the power battery, Among them, if the temperature of the power battery is higher than the eighth preset temperature, the third switching component is controlled to connect the water bath vaporizer to the heat exchange channel; if the temperature of the power battery is not higher than the ninth preset temperature, the third switching component is controlled to disconnect the water bath vaporizer from the heat exchange channel.

7. A vehicle control method according to claim 1, characterized in that: include: Get the temperature of the power battery; controlling the third switching component according to the temperature of the power battery, Among them, if the temperature of the power battery system is lower than the tenth preset temperature, the third switching component is controlled to connect the waste heat recovery system with the heat exchange channel; if the temperature of the power battery system is higher than the eleventh preset temperature, the third switching component is controlled to disconnect the waste heat recovery system from the heat exchange channel.

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