Liquid hydrogen system and vehicle

Abstract

The invention provides a liquid hydrogen system and a vehicle, and relates to the technical field of liquid hydrogen application. The liquid hydrogen system comprises a liquid hydrogen storage device used for storing hydrogen, the hydrogen comprises liquid-phase hydrogen and gas-phase hydrogen, and the liquid hydrogen storage device is provided with a gas-phase port and a liquid-phase port; the reliquefaction device is used for liquefying gas-phase hydrogen into liquid-phase hydrogen, the gas-phase opening is communicated with a gas inlet of the reliquefaction device, and a liquid outlet of the reliquefaction device is communicated with the liquid-phase opening; an input port of the power generation device communicates with the liquid hydrogen storage device, and the power generation device is used for generating power through hydrogen; the battery assembly is connected to the power generation device and used for storing the electric energy generated by the power generation device; the reliquefaction device, the power generation device and the battery assembly are all in communication connection with the control assembly, and the control assembly is used for controlling operation of the reliquefaction device, the power generation device and the battery assembly. The liquid hydrogen system can prolong the storage time of liquid hydrogen, reduce the loss of hydrogen energy and improve the utilization rate of the hydrogen energy.

Description

Technical Field

[0001] The present disclosure relates to the technical field of liquid hydrogen application, and in particular to a liquid hydrogen system and a vehicle. Background Art

[0002] Hydrogen is a high-energy-density energy source. Liquid hydrogen per unit mass can release energy far exceeding that of traditional fossil fuels. In addition, the main product of hydrogen combustion is water, which can greatly reduce pollutant emissions and effectively alleviate the pressure on the atmospheric environment. At the same time, hydrogen can be produced through renewable energy such as electrolysis of water, and is renewable. It is currently widely used in launch vehicles such as communication satellites, spacecraft and space shuttles. However, liquid hydrogen storage requires a relatively low temperature, and its storage temperature is usually controlled at around -253°C. Due to the large temperature difference between the external ambient temperature and the interior of the liquid hydrogen storage device, external heat leaks into the liquid hydrogen cylinder. After the liquid hydrogen absorbs heat, it vaporizes, causing the internal pressure of the liquid hydrogen storage device to increase. In order to ensure safety, it is often necessary to discharge hydrogen for pressure relief. In this way, it is difficult for liquid hydrogen to achieve long-term stable storage. This characteristic also makes it less suitable for providing energy support for vehicles that need to operate continuously for a long time, limiting the wide application prospects of liquid hydrogen in specific transportation scenarios. Summary of the invention

[0003] The present disclosure aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] To this end, a first aspect of the present disclosure provides a liquid hydrogen system;

[0005] A second aspect of the present disclosure provides a vehicle.

[0006] According to a first aspect of an embodiment of the present disclosure, a liquid hydrogen system is provided, comprising:

[0007] A liquid hydrogen storage device, used for storing hydrogen, the hydrogen includes liquid hydrogen and gaseous hydrogen, the liquid hydrogen storage device has a gaseous phase port and a liquid phase port;

[0008] A reliquefaction device, used to liquefy gaseous hydrogen into liquid hydrogen, wherein the gas phase port is connected to the gas inlet of the reliquefaction device, and the liquid outlet of the reliquefaction device is connected to the liquid phase port;

[0009] A power generation device, the input port of which is connected to the liquid hydrogen storage device, and the power generation device is used to generate electricity using hydrogen;

[0010] A battery assembly is connected to the power generation device, and the battery assembly is used to store the electric energy generated by the power generation device;

[0011] The control component, the reliquefaction device, the power generation device and the battery component are all communicatively connected to the control component, and the control component is used to control the operation of the reliquefaction device, the power generation device and the battery component.

[0012] In a feasible implementation, it also includes:

[0013] A first liquid phase pipeline, one end of which is connected to the liquid phase port, and the other end of which is connected to the liquid outlet of the reliquefaction device;

[0014] a second liquid phase pipeline, the second liquid phase pipeline being connected to the first liquid phase pipeline, and the second liquid phase pipeline being used to charge hydrogen into the liquid hydrogen storage device;

[0015] A first control valve is arranged in the first liquid phase pipeline, and the first control valve is located between the second liquid phase pipeline and the liquid phase port;

[0016] A second control valve is arranged in the first liquid phase pipeline, and the second control valve is located between the second liquid phase pipeline and the reliquefaction device;

[0017] Wherein, the first control valve and the second control valve are both communicatively connected to the control component.

[0018] In a feasible implementation, it also includes:

[0019] A boosting pipeline, one end of which is connected to the first liquid phase pipeline, and the other end of which is connected to the gas phase port;

[0020] A third control valve is arranged in the boost pipeline, and a signal of the third control valve is communicatively connected with the control component;

[0021] A converter, arranged in the booster pipeline, for converting liquid hydrogen into gaseous hydrogen;

[0022] The connection point between the boost pipeline and the first liquid phase pipeline is located between the first control valve and the second control valve.

[0023] In a feasible implementation, it also includes:

[0024] a first gas phase pipeline, one end of which is connected to the gas phase port, and the other end of which is connected to the gas inlet of the reliquefaction device;

[0025] A second gas phase pipeline, the second gas phase pipeline is connected to the first gas phase pipeline, and the second gas phase pipeline is used to export hydrogen;

[0026] A fourth control valve is provided in the first gas phase pipeline, and the fourth control valve is located between the second gas phase pipeline and the gas phase port;

[0027] a fifth control valve, arranged in the first gas phase pipeline, the fifth control valve being located between the second gas phase pipeline and the reliquefaction device;

[0028] Wherein, the fourth control valve and the fifth control valve are both communicatively connected to the control component.

[0029] In a feasible implementation, it also includes:

[0030] A discharge pipeline, wherein the air inlet end of the discharge pipeline is connected to the gas phase port, and the air outlet end of the discharge pipeline is used to be connected to the external environment;

[0031] A discharge valve is arranged on the discharge pipeline, and is used to control the conduction or cut-off of the discharge pipeline;

[0032] An explosion-proof fan is provided at the outlet end of the discharge pipeline to blow away the gas phase hydrogen discharged from the discharge pipeline;

[0033] The discharge valve has a preset pressure threshold. When the gas pressure in the discharge pipeline is greater than the pressure threshold, the discharge valve is turned on; when the gas pressure in the discharge pipeline is less than or equal to the pressure threshold, the discharge valve is turned off.

[0034] In a feasible implementation, it also includes:

[0035] An application pipeline, one end of which is connected to the liquid phase port;

[0036] A vaporizer, wherein the other end of the application pipeline is connected to a liquid inlet of the vaporizer, and the vaporizer is used to vaporize liquid hydrogen into gaseous hydrogen;

[0037] A buffer tank, wherein the gas outlet of the vaporizer is connected to the input port of the buffer tank, and the output port of the buffer tank is connected to the power generation device;

[0038] a sixth control valve, arranged in the application pipeline, between the vaporizer and the liquid phase port;

[0039] Wherein, the sixth control valve is communicatively connected with the control component.

[0040] In a feasible implementation, it also includes:

[0041] A bypass pipeline, one end of which is connected to the gas phase port, and the other end of which is connected to the liquid inlet of the vaporizer;

[0042] The seventh control valve is arranged in the bypass pipeline, and the seventh control valve is communicatively connected with the control component.

[0043] In a feasible implementation manner, the power generation device includes:

[0044] A hydrogen fuel cell is used to generate electricity using hydrogen, and the buffer tank is connected to the hydrogen fuel cell;

[0045] A liquid cooling unit is provided in the hydrogen fuel cell, and is used to cool the hydrogen fuel cell;

[0046] Air-cooled heat dissipation unit, used to cool the liquid cooling unit and hydrogen fuel cell;

[0047] A power generation control unit, which is in communication with the control assembly and is used to control the hydrogen fuel cell, the liquid cooling unit and the air cooling unit;

[0048] A liquid inlet pipe, through which the liquid cooling unit inputs the cooling liquid after cooling into the evaporator, so that the cooling liquid after cooling heats the evaporator;

[0049] Liquid return pipe: the carburetor discharges the coolant used for cooling back to the liquid cooling part through the liquid return pipe.

[0050] In a feasible implementation manner, the liquid hydrogen storage device comprises:

[0051] A liquid hydrogen storage tank is used to store hydrogen, and a gas phase port and a liquid phase port are both formed on the liquid hydrogen storage tank;

[0052] A detection unit, disposed in the liquid hydrogen storage tank, for detecting parameters inside the liquid hydrogen storage tank;

[0053] The detection unit is communicatively connected to the control component, and is used to transmit parameters to the control component.

[0054] In a feasible embodiment, the reliquefaction device comprises:

[0055] A cooling pipeline, one end of which is used to form an air inlet of the reliquefaction device, and the other end of which is used to form a liquid outlet of the reliquefaction device;

[0056] A compression pump, arranged in the cooling pipeline, for compressing gaseous hydrogen into liquid hydrogen;

[0057] A refrigerant channel, wherein the cooling pipeline is located inside the refrigerant channel, and the refrigerant channel contains a cooling medium;

[0058] A refrigeration pump is used to cool the cooling medium. The refrigeration pump has a pump inlet end and a pumping end. Both the pump inlet end and the pumping end are connected to the refrigerant channel. The cooling pipeline is located between the pump inlet end and the pumping end.

[0059] A reliquefaction control unit, communicatively connected to the control assembly, and used for controlling a compression pump and a refrigeration pump;

[0060] The power generation device and / or the battery assembly are electrically connected to the compression pump, and the power generation device and / or the battery assembly are electrically connected to the refrigeration pump.

[0061] According to a second aspect of an embodiment of the present disclosure, a vehicle is provided, comprising:

[0062] A liquid hydrogen system as described in any one of the first aspects above.

[0063] Compared with the prior art, the present disclosure includes at least the following beneficial effects: the liquid hydrogen system provided by the embodiment of the present disclosure includes a liquid hydrogen storage device, a reliquefaction device, a power generation device, a battery assembly and a control assembly, wherein the liquid hydrogen storage device is used to store hydrogen, and hydrogen is mostly stored in the liquid hydrogen storage device in the form of liquid hydrogen. With the use of hydrogen and the vaporization of liquid hydrogen, gaseous hydrogen will also exist in the liquid hydrogen storage device, and the gas phase port of the liquid hydrogen storage device is connected to the gas inlet of the reliquefaction device, and the liquid phase port of the liquid hydrogen storage device is connected to the liquid outlet of the reliquefaction device, so that the gaseous hydrogen of the liquid hydrogen storage device can enter the reliquefaction device through the gas phase port, and the reliquefaction device can liquefy the gaseous hydrogen to obtain liquid hydrogen, and the liquid hydrogen can flow back to the liquid hydrogen storage device from the liquid phase port, thereby reducing the storage of liquid hydrogen and the storage cost of liquid hydrogen. The internal pressure of the storage device can be increased, and the loss of hydrogen can be reduced, which is beneficial to extending the storage time of hydrogen; the liquid hydrogen storage device is connected to the input port of the power generation device, so that the power generation device can use the hydrogen provided by the liquid hydrogen storage device as a power source to perform power generation operations, and the power generation device can convert the chemical energy of hydrogen into electrical energy. The electrical energy generated by the power generation device can be stored through the battery assembly for easy extraction and use at any time; in actual applications, the reliquefaction device, the power generation device and the battery assembly can be controlled by the control assembly according to actual work needs, so as to achieve mutual coordination among the liquid hydrogen storage device, the reliquefaction device, the power generation device and the battery assembly, so that the hydrogen system can be suitable for various working conditions, and provide guarantee for the efficient, stable and safe operation of the hydrogen system.

[0064] The liquid hydrogen system and vehicle described in the present disclosure, and other advantages, objectives, and features of the present disclosure will be reflected in part through the following description, and will also be understood by those skilled in the art through research and practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the exemplary embodiments below. The accompanying drawings are only for the purpose of illustrating exemplary embodiments and are not to be considered as limiting the present disclosure. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0066] Figure 1 A schematic structural diagram of a liquid hydrogen system according to an embodiment of the present disclosure.

[0067] in, Figure 1 The corresponding relationship between the reference numerals and the component names is as follows:

[0068] 110 liquid hydrogen storage device, 120 reliquefaction device, 130 power generation device, 140 battery assembly, 150 control assembly;

[0069] 2001 first liquid phase pipeline, 2002 second liquid phase pipeline, 210 first control valve, 220 second control valve, 230 first stop valve, 240 filter element;

[0070] 3001 booster pipeline, 310 third control valve, 320 converter, 330 first check valve;

[0071] 4001 a first gas phase pipeline, 4002 a second gas phase pipeline, 410 a fourth control valve, 420 a fifth control valve, 430 a second stop valve;

[0072] 5001 release pipe, 510 discharge valve, 520 explosion-proof fan;

[0073] 6001 application pipeline, 610 vaporizer, 620 buffer tank, 630 sixth control valve, 640 pressure regulator, 650 third stop valve, 660 third check valve;

[0074] 7001 bypass pipeline, 710 seventh control valve, 720 third check valve;

[0075] 131 hydrogen fuel cell, 132 liquid cooling unit, 133 air cooling unit, 134 power generation control unit;

[0076] 1301 liquid inlet pipe, 1301 liquid return pipe;

[0077] 111 liquid hydrogen storage tank, 112 detection department;

[0078] 1201 cooling pipeline, 1202 refrigerant channel, 121 compression pump, 122 refrigeration pump, 123 reliquefaction control unit. DETAILED DESCRIPTION

[0079] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0080] Figure 1 The schematic structural diagram of a liquid hydrogen system of an embodiment provided by the present disclosure is as follows. Figure 1As shown, according to a first aspect of an embodiment of the present disclosure, a liquid hydrogen system is proposed, comprising: a liquid hydrogen storage device 110 , a reliquefaction device 120 , a power generation device 130 , a battery assembly 140 and a control assembly 150 . The liquid hydrogen storage device 110 is used to store hydrogen, which includes liquid hydrogen and gaseous hydrogen. The liquid hydrogen storage device 110 has a gas phase port and a liquid phase port; the reliquefaction device 120 is used to liquefy the gaseous hydrogen into liquid hydrogen, the gas phase port is connected to the gas inlet of the reliquefaction device 120, and the liquid outlet of the reliquefaction device 120 is connected to the liquid phase port; the power generation device 130 has an input port connected to the liquid hydrogen storage device 110, and the power generation device 130 is used to generate electricity using hydrogen; the battery assembly 140 is connected to the power generation device 130, and the battery assembly 140 is used to store the electric energy generated by the power generation device 130; the control assembly 150 reliquefaction device 120, the power generation device 130 and the battery assembly 140 are all in communication connection with the control assembly 150, and the control assembly 150 is used to control the operation of the reliquefaction device 120, the power generation device 130 and the battery assembly 140.

[0081] The liquid hydrogen system proposed in accordance with the embodiment of the present disclosure includes a liquid hydrogen storage device 110, a reliquefaction device 120, a power generation device 130, a battery assembly 140 and a control assembly 150, wherein the liquid hydrogen storage device 110 is used to store hydrogen, and hydrogen is mostly stored in the liquid hydrogen storage device 110 in the form of liquid hydrogen. With the use of hydrogen and the vaporization of liquid hydrogen, gaseous hydrogen will also exist in the liquid hydrogen storage device 110. The gas phase port of the liquid hydrogen storage device 110 is connected to the gas inlet of the reliquefaction device 120, and the liquid phase port of the liquid hydrogen storage device 110 is connected to the liquid outlet of the reliquefaction device 120, so that the gaseous hydrogen of the liquid hydrogen storage device 110 can enter the reliquefaction device 120 through the gas phase port, and the reliquefaction device 120 can liquefy the gaseous hydrogen to obtain liquid hydrogen, and the liquid hydrogen can flow back to the liquid hydrogen storage device 110 from the liquid phase port, thereby reducing the internal pressure of the liquid hydrogen storage device 110. force, and can reduce the loss of hydrogen, which is conducive to extending the storage time of hydrogen; the liquid hydrogen storage device 110 is connected to the input port of the power generation device 130, so that the power generation device 130 can use the hydrogen provided by the liquid hydrogen storage device 110 as a power source to perform power generation operations, and the power generation device 130 can convert the chemical energy of hydrogen into electrical energy. The electrical energy generated by the power generation device 130 can be stored by the battery assembly 140, so that it can be extracted and used at any time; in actual applications, according to actual work needs, the control assembly 150 can be used to control the reliquefaction device 120, the power generation device 130 and the battery assembly 140, so as to achieve mutual coordination among the liquid hydrogen storage device 110, the reliquefaction device 120, the power generation device 130 and the battery assembly 140, so that the hydrogen system can be applicable to various working conditions, providing guarantee for the efficient, stable and safe operation of the hydrogen system.

[0082] It should be noted that the electric energy generated by the power generation device 130 can be used for external output, that is, the power generation device 130 can provide power support for other devices connected to it; at the same time, when the electric energy generated by the power generation device 130 cannot be fully used, the battery assembly 140 can properly store the remaining electric energy. Subsequently, the battery assembly 140 can be used as an independent power source to output electric energy, or it can be used as a supplement to the power generation device 130 to power the equipment connected to the power generation device 130, which is beneficial to ensure that the power supply of the entire system always remains stable and reliable, and reduce the occurrence of power interruptions or insufficient supply caused by intermittent operation of the power generation device 130 or fluctuations in external power demand.

[0083] It should be noted that the setting of the reliquefaction device 120 can liquefy the vaporized gaseous hydrogen into liquefied hydrogen for circulation, thereby reducing the loss of hydrogen caused by vaporization, and at the same time can reduce the internal pressure of the liquid hydrogen storage device 110, thereby improving the safety of the system. The setting of the power generation device 130 and the battery assembly 140 can utilize the hydrogen inside the liquid hydrogen storage device 110 to convert the chemical energy of the hydrogen into electrical energy, and at the same time store the excess electrical energy, thereby further reducing the loss of energy from the application point of view and improving the energy supply time.

[0084] It should be noted that, in some transportation application scenarios, some vehicles need to be transported for a long time, and it is not convenient to maintain or replace liquid hydrogen energy in the middle, especially railway locomotives, which often need to be parked and waited on the railway route during operation. The method used in the prior art is to increase the amount of liquid hydrogen carried, such as carrying multiple liquid hydrogen cylinders in series, but this method leads to too many liquid hydrogen cylinders, and the liquid hydrogen cylinders are large in size and mass. On the one hand, it is not convenient to install and replace. On the other hand, the internal rise of the cylinder caused by the vaporization of liquid hydrogen is easy to cause hydrogen to be discharged, which poses a great safety hazard. On the other hand, this method also has a relatively large loss of hydrogen energy and a low energy utilization rate. The liquid hydrogen system proposed in the embodiment of the present disclosure, based on the above-mentioned setting, can realize the reliquefaction of gaseous hydrogen, relieve the pressure inside the liquid hydrogen storage device 110, reduce the discharge of hydrogen, improve the safety of the system, and at the same time, the chemical energy of hydrogen can be converted into electrical energy for storage, further reducing the loss of hydrogen, which is conducive to improving the energy utilization rate of hydrogen.

[0085] Exemplarily, the battery assembly 150 may include a lithium battery unit and a battery control unit, wherein the lithium battery unit is used to store electrical energy, and the battery control unit is used to control the charging or discharging of the lithium battery unit, and the battery control unit is communicatively connected to the control assembly.

[0086] In some examples, such as Figure 1As shown, it also includes: a first liquid phase pipeline 2001, one end of the first liquid phase pipeline 2001 is connected to the liquid phase port, and the other end of the first liquid phase pipeline 2001 is connected to the liquid outlet of the reliquefaction device 120; a second liquid phase pipeline 2002, the second liquid phase pipeline 2002 is connected to the first liquid phase pipeline 2001, and the second liquid phase pipeline 2002 is used to fill hydrogen into the liquid hydrogen storage device 110; a first control valve 210, which is arranged in the first liquid phase pipeline 2001, and the first control valve 210 is located between the second liquid phase pipeline 2002 and the liquid phase port; a second control valve 220, which is arranged in the first liquid phase pipeline 2001, and the second control valve 220 is located between the second liquid phase pipeline 2002 and the reliquefaction device 120; wherein the first control valve 210 and the second control valve 220 are both communicatively connected to the control component 150.

[0087] In the above technical solution, the liquid hydrogen system also includes a first liquid phase pipeline 2001, a second liquid phase pipeline 2002, a first control valve 210 and a second control valve 220. Based on the above arrangement, the liquid hydrogen storage device 110 has at least two liquid hydrogen injection methods. One is to input the liquid hydrogen converted by the reliquefaction device 120 into the liquid hydrogen storage device 110 through the first liquid phase pipeline 2001 to realize the hydrogen circulation inside the liquid hydrogen storage device 110; the other is to directly inject liquid hydrogen into the liquid hydrogen storage device 110 through the second liquid phase pipeline 2002 and the first liquid phase pipeline 2001 to realize the liquid hydrogen storage device 110. Hydrogen filling; the first control valve 210 and the second control valve 220 are both controlled by the control component 150, and the control component 150 can control the application of the two injection methods by adjusting the opening of the first control valve 210 and the second control valve 220; in actual application, when it is necessary to inject liquid hydrogen into the liquid hydrogen storage device 110 through the reliquefaction device 120, the control component 150 controls the first control valve 210 and the second control valve 220 to be turned on; when it is necessary to fill the liquid hydrogen storage device 110 through the second liquid phase pipeline 2002, the control component 150 controls the first control valve 210 to open and controls the second control valve 220 to close.

[0088] It can be understood that the control component 150 controls the opening of the first control valve 210 and the second control valve 220 to achieve control of the flow rate of liquid hydrogen gas in the pipeline.

[0089] Exemplarily, the liquid hydrogen system also includes a first stop valve 230, which is arranged in the second liquid phase pipeline 2002. The first stop valve 230 can control the conduction or cutoff of the second liquid phase pipeline 2002. The first stop valve 230 can be manually controlled to facilitate the staff to operate according to the situation when filling liquid hydrogen into the liquid hydrogen storage device 110.

[0090] Exemplarily, the liquid hydrogen system further includes a filter element 240 , which is disposed in the second liquid phase pipeline 2002 and is used to filter the liquid hydrogen gas injected from the second liquid phase pipeline 2002 into the liquid hydrogen storage device 110 .

[0091] In some examples, such as Figure 1 As shown, it also includes: a boost pipeline 3001, one end of the boost pipeline 3001 is connected to the first liquid phase pipeline 2001, and the other end of the boost pipeline 3001 is connected to the gas phase port; a third control valve 310 is arranged on the boost pipeline 3001, and the signal of the third control valve 310 is communicated with the control component 150; a converter 320 is arranged on the boost pipeline 3001, and the converter 320 is used to convert liquid hydrogen into gaseous hydrogen; wherein, the connection between the boost pipeline 3001 and the first liquid phase pipeline 2001 is located between the first control valve 210 and the second control valve 220.

[0092] In the above technical solution, the liquid hydrogen system also includes a boosting pipeline 3001, a third control valve 310 and a converter 320; when the internal pressure of the liquid hydrogen storage device 110 is too low, the control component 150 controls the first control valve 210 and the third control valve 310 to be turned on, so that the liquid hydrogen in the liquid hydrogen storage device 110 enters the boosting pipeline 3001 and is converted into gaseous hydrogen under the action of the converter 320. The gaseous hydrogen is then injected back into the liquid hydrogen storage device 110 from the gas phase port, thereby increasing the internal pressure of the liquid hydrogen storage device 110.

[0093] Exemplarily, the liquid hydrogen system also includes a first one-way valve 330, which is arranged on the boosting pipeline 3001. The conduction direction of the first one-way valve 330 is from the first liquid phase pipeline 2001 to the gas phase port, which can prevent the gas phase hydrogen in the liquid hydrogen storage device 110 from flowing back.

[0094] In some examples, such as Figure 1 As shown, it also includes: a first gas phase pipeline 4001, one end of the first gas phase pipeline 4001 is connected to the gas phase port, and the other end of the first gas phase pipeline 4001 is connected to the gas inlet of the reliquefaction device 120; a second gas phase pipeline 4002, the second gas phase pipeline 4002 is connected to the first gas phase pipeline 4001, and the second gas phase pipeline 4002 is used to export hydrogen; a fourth control valve 410, which is arranged on the first gas phase pipeline 4001, and the fourth control valve 410 is located between the second gas phase pipeline 4002 and the gas phase port; a fifth control valve 420, which is arranged on the first gas phase pipeline 4001, and the fifth control valve 420 is located between the second gas phase pipeline 4002 and the reliquefaction device 120; wherein the fourth control valve 410 and the fifth control valve 420 are both communicatively connected to the control component 150.

[0095] In the above technical solution, the liquid hydrogen system also includes a first gas phase pipeline 4001, a second gas phase pipeline 4002, a fourth control valve 410 and a fifth control valve 420; based on the above settings, the liquid hydrogen storage device 110 has at least two ways of discharging gaseous hydrogen, one of which is that the gaseous hydrogen enters the first gas phase pipeline 4001 from the gas phase port, and then flows into the reliquefaction device 120 for reliquefaction, so as to realize the hydrogen circulation inside the liquid hydrogen storage device 110; the other way is that the gaseous hydrogen enters the first gas phase pipeline 4001 from the gas phase port, and then flows into the second gas phase pipeline 4002, and is discharged from the second gas phase pipeline 4002, and the derived gaseous hydrogen can be used for other equipment or directly discharged; the fourth control valve 410 and the fifth control valve 420 are both controlled by the control component 150, and the control component 150 can control the application of the two discharge methods by adjusting the opening of the fourth control valve 410 and the fifth control valve 420.

[0096] It should be noted that both discharge methods can be used for depressurizing the liquid hydrogen storage device 110 , and a suitable discharge method can be selected according to actual conditions, which will not be described in detail here.

[0097] It should be noted that the control component 150 controls the opening of the fourth control valve 410 and the fifth control valve 420 to achieve control of the gas phase hydrogen flow rate inside the pipeline.

[0098] Exemplarily, the liquid hydrogen system also includes a second stop valve 430, which is arranged in the second gas phase pipeline 4002. The second stop valve 430 can control the conduction or cutoff of the second gas phase pipeline 4002. The second stop valve 430 can be manually controlled to facilitate the staff to operate according to the situation when discharging gaseous hydrogen.

[0099] In some examples, such as Figure 1 As shown, it also includes: a vent pipeline 5001, the air inlet end of the vent pipeline 5001 is connected to the gas phase port, and the air outlet end of the vent pipeline 5001 is used to connect to the external environment; a discharge valve 510, which is arranged on the vent pipeline 5001, and the discharge valve 510 is used to control the conduction or cutoff of the vent pipeline 5001; an explosion-proof fan 520, which is arranged at the air outlet end of the vent pipeline 5001, and is used to blow away the gas phase hydrogen discharged from the vent pipeline 5001; wherein, the discharge valve 510 has a preset pressure threshold, and when the gas pressure in the vent pipeline 5001 is greater than the pressure threshold, the discharge valve 510 is turned on; when the gas pressure in the vent pipeline 5001 is less than or equal to the pressure threshold, the discharge valve 510 is cut off.

[0100] In the above technical solution, the liquid hydrogen system further includes a venting pipeline 5001, a discharge valve 510 and an explosion-proof fan 520. The arrangement of the venting pipeline 5001, the discharge valve 510 and the explosion-proof fan 520 improves the safety of the liquid hydrogen system; the venting pipeline 5001 is connected to the interior of the liquid hydrogen storage device 110 through the gas phase port, so that the pressure of the venting pipeline 5001 is the same as that of the interior of the liquid hydrogen storage device 110. When the internal pressure of the liquid hydrogen storage device 110 is too high, the gas in the venting pipeline 5001 is discharged. When the gas pressure rises, when the gas pressure exceeds the pressure threshold, the discharge valve 510 will be opened, and then the gaseous hydrogen inside the liquid hydrogen storage device 110 can be discharged through the discharge pipe 5001 to reduce the internal pressure of the liquid hydrogen storage device 110, which is beneficial to avoid the liquid hydrogen storage device 110 from exploding due to excessive pressure; at the same time, an explosion-proof fan 520 is arranged at the gas outlet end of the discharge pipe 5001, which can quickly blow away the gaseous hydrogen discharged into the external environment, avoid the accumulation of a large amount of gaseous hydrogen, and help reduce safety hazards.

[0101] In some examples, such as Figure 1 As shown, it also includes: an application pipeline 6001, one end of which is connected to the liquid phase port; a vaporizer 610, the other end of which is connected to the liquid inlet of the vaporizer 610, and the vaporizer 610 is used to vaporize liquid hydrogen into gaseous hydrogen; a buffer tank 620, the gas outlet of the vaporizer 610 is connected to the input port of the buffer tank 620, and the output port of the buffer tank 620 is connected to the power generation device 130; a sixth control valve 630, which is arranged in the application pipeline 6001 and is located between the vaporizer 610 and the liquid phase port; wherein the sixth control valve 630 is communicatively connected to the control component 150.

[0102] In the above technical solution, the liquid hydrogen system also includes an application pipeline 6001, a vaporizer 610, a buffer tank 620 and a sixth control valve 630. The liquid hydrogen storage device 110 can transport hydrogen to the power generation device 130 through the application pipeline 6001, the vaporizer 610 and the buffer tank 620. When power generation is required, the control component 150 controls the sixth control valve 630 to be turned on, and the liquid hydrogen enters the vaporizer 610 through the application pipeline 6001. The vaporizer 610 can convert the liquid hydrogen into gaseous hydrogen, so as to facilitate the power generation device In the application of the power generation device 130, a buffer tank 620 is further provided between the power generation device 130 and the vaporizer 610. On the one hand, the buffer tank 620 can buffer the gaseous hydrogen output by the vaporizer 610, and output stable gaseous hydrogen to the power generation device 130, thereby reducing the influence of the fluctuation of the gaseous hydrogen output by the vaporizer 610 on the power generation device 130. On the other hand, the buffer tank 620 can also precipitate the gaseous hydrogen, thereby reducing the probability of a small amount of impurities mixed in the gaseous hydrogen or incompletely vaporized liquid hydrogen entering the power generation device 130.

[0103] Exemplarily, the liquid hydrogen system also includes a pressure regulator 640, which is disposed between the buffer tank 620 and the power generation device 130. The pressure regulator 640 is communicatively connected to the control component 150, and the pressure regulator 640 is used to control the pressure of the gaseous hydrogen output from the buffer tank 620 to the power generation device 130; thus, the control component 150 can adjust the efficiency of the buffer tank 620 in transporting the gaseous hydrogen to the power generation device 130 by controlling the pressure regulator 640.

[0104] Exemplarily, the liquid hydrogen system also includes a third stop valve 650, which is arranged in the application pipeline 6001, and the third stop valve 650 is located between the vaporizer 610 and the liquid phase port; the third stop valve 650 can be manually controlled to control the conduction or cutoff of the application pipeline 6001 in special circumstances such as system failure.

[0105] Exemplarily, the liquid hydrogen system further includes a fourth one-way valve, which is disposed between the vaporizer 610 and the buffer tank 620 , and the conduction direction of the fourth one-way valve is from the vaporizer 610 to the buffer tank 620 .

[0106] In some examples, such as Figure 1 As shown, it also includes: a bypass line 7001, one end of the bypass line 7001 is connected to the gas phase port, and the other end of the bypass line 7001 is connected to the liquid inlet of the vaporizer 610; a seventh control valve 710 is arranged on the bypass line 7001, and the seventh control valve 710 is communicated with the control component 150.

[0107] In the above technical solution, the liquid hydrogen system also includes a bypass line 7001 and a seventh control valve 710. With such arrangement, when the pressure inside the liquid hydrogen storage device 110 is relatively high, the first control valve 210 can be controlled to be turned on by the control component 150, so that the gaseous hydrogen inside the liquid hydrogen storage device 110 can enter the vaporizer 610 through the bypass line 7001, and then enter the power generation device 130 to generate electricity.

[0108] It is understandable that in the process of converting the gaseous hydrogen provided by the reliquefaction device 120 into liquid hydrogen, there will inevitably be a certain loss of hydrogen. Directly using the gaseous hydrogen to generate electricity can both reduce the pressure inside the liquid hydrogen storage device 110 and reduce the loss of hydrogen.

[0109] It is worth noting that the temperature of gaseous hydrogen is higher than that of liquid hydrogen. Injecting gaseous hydrogen into the vaporizer 610 can assist the vaporizer 610 in heating the liquid hydrogen, which is beneficial to improving the efficiency of vaporization of the liquid hydrogen.

[0110] Exemplarily, the liquid hydrogen system also includes a third one-way valve 720660, which is arranged in the bypass line 7001. The conduction direction of the third one-way valve 720660 is from the gas phase port to the liquid inlet of the vaporizer 610. The third one-way valve 720660 can prevent hydrogen from flowing back.

[0111] In some examples, such as Figure 1 As shown, the power generation device 130 includes: a hydrogen fuel cell 131, which is used to generate electricity using hydrogen, and the buffer tank 620 is connected to the hydrogen fuel cell 131; a liquid cooling unit 132, which is arranged on the hydrogen fuel cell 131, and the liquid cooling unit 132 is used to cool the hydrogen fuel cell 131; an air-cooled heat dissipation unit 133, which is used to cool the liquid cooling unit 132 and the hydrogen fuel cell 131; a power generation control unit 134, which is communicatively connected with the control component 150, and the power generation control unit 134 is used to control the hydrogen fuel cell 131, the liquid cooling unit 132 and the air-cooled heat dissipation unit 133; a liquid inlet pipe 1301, through which the liquid cooling unit 132 inputs the cooling liquid after cooling to the vaporizer 610, so that the cooling liquid after cooling heats the vaporizer 610; a return liquid pipe 1301, through which the vaporizer 610 discharges the cooling liquid after cooling back to the liquid cooling unit 132.

[0112] In the above technical solution, the power generation device 130 includes a hydrogen fuel cell 131, a liquid cooling unit 132, an air cooling unit 133 and a power generation control unit 134, wherein a buffer tank 620 is connected to the hydrogen fuel cell 131, and the buffer tank 620 is used to pass gaseous hydrogen to the hydrogen fuel cell 131, and the hydrogen fuel cell 131 can convert the gaseous hydrogen into electrical energy, and output the electrical energy for application or input it into the battery assembly 140 for storage; the hydrogen fuel cell 131 generates a large amount of heat during the energy conversion process. Once the temperature is too high, on the one hand, it will affect the performance of the hydrogen fuel cell 131, and on the other hand, it will cause the hydrogen fuel cell 131 to have a risk of explosion. Therefore, the liquid cooling unit 132 and the air cooling unit 133 are set to protect the hydrogen fuel cell 131. The fuel cell 131 dissipates heat to ensure the stable operation of the hydrogen fuel cell 131 and improve the safety of the power generation device 130; in addition, the power generation device 130 also includes a liquid inlet pipe 1301 and a liquid return pipe 1301. The liquid cooling part 132 cools the hydrogen fuel cell 131 through the coolant. The cooled coolant will be heated up under the action of the hydrogen fuel cell 131. The cooled coolant is injected into the vaporizer 610 through the liquid inlet pipe 1301. The temperature of the cooled coolant can be used to increase the temperature of the vaporizer 610, thereby improving the vaporization efficiency of the vaporizer 610. After that, the cooled coolant passes through the vaporizer 610 and then returns to the liquid cooling part 132 from the liquid return pipe 1301 to realize the circulation of the coolant.

[0113] Exemplarily, the liquid cooling part 132 includes a liquid cooling box, which is used to store cooling liquid. The liquid inlet pipe 1301 and the liquid return pipe 1301 are both connected to the liquid cooling box. The air-cooled heat dissipation part 133 can cool the liquid cooling box to reduce the temperature of the cooling liquid.

[0114] In some examples, such as Figure 1 As shown, the liquid hydrogen storage device 110 includes: a liquid hydrogen storage tank 111, which is used to store hydrogen, and a gas phase port and a liquid phase port are both formed in the liquid hydrogen storage tank 111; a detection unit 112, which is arranged in the liquid hydrogen storage tank 111 and is used to detect parameters inside the liquid hydrogen storage tank 111; wherein the detection unit 112 is communicatively connected to the control component 150, and the detection unit 112 is used to transmit parameters to the control component 150.

[0115] In the above technical solution, the liquid hydrogen storage device 110 includes a liquid hydrogen storage tank 111 and a detection unit 112. The detection unit 112 can detect parameters inside the liquid hydrogen storage tank 111, specifically including parameters such as the pressure, temperature and liquid level of liquid hydrogen inside the liquid hydrogen storage tank 111. The detection unit 112 can transmit the detected parameters to the control component 150, so that the control component 150 can monitor the condition of the liquid hydrogen storage tank 111, and also facilitate the control component 150 to control the reliquefaction device 120, the power generation device 130 and the battery assembly 140 according to the condition of the liquid hydrogen storage tank 111.

[0116] Exemplarily, the liquid hydrogen storage device 110 also includes a vacuum gauge and a vacuum shut-off valve. A vacuum interlayer exists on the outer wall of the liquid hydrogen storage tank 111. The vacuum gauge is connected to the vacuum interlayer. The vacuum shut-off valve is arranged on the vacuum shut-off valve. The vacuum shut-off valve is used to control the conduction or cut-off of the vacuum gauge. The vacuum gauge is used to connect to an external vacuum detection device.

[0117] In some examples, such as Figure 1 As shown, the reliquefaction device 120 includes: a cooling pipeline 1201, one end of which is used to form an air inlet of the reliquefaction device 120, and the other end of the cooling pipeline 1201 is used to form a liquid outlet of the reliquefaction device 120; a compression pump 121, which is arranged in the cooling pipeline 1201 and is used to compress gaseous hydrogen into liquid hydrogen; a refrigerant channel 1202, the cooling pipeline 1201 is located inside the refrigerant channel 1202, and the refrigerant channel 1202 contains a cooling medium; a refrigeration pump 122, the refrigeration pump 122 Used to cool the cooling medium, the refrigeration pump 122 has a pump inlet end and a pumping end, both of which are connected to the refrigerant channel 1202, and the cooling pipeline 1201 is located between the pump inlet end and the pumping end; the reliquefaction control unit 123 is communicatively connected to the control component 150, and the reliquefaction control unit 123 is used to control the compression pump 121 and the refrigeration pump 122; wherein, the power generation device 130 and / or the battery assembly 140 are electrically connected to the compression pump 121, and the power generation device 130 and / or the battery assembly 140 are electrically connected to the refrigeration pump 122.

[0118] In the above technical solution, the reliquefaction device 120 includes a cooling pipeline 1201, a compression pump 121, a refrigerant channel 1202, a refrigeration pump 122 and a reliquefaction control unit 123; gaseous hydrogen enters from one end of the cooling pipeline 1201 forming an air inlet, is cooled in the cooling pipeline 1201, and is compressed by the compression pump 121 to obtain liquid hydrogen, which then flows out from one end of the cooling pipeline 1201 forming a liquid outlet; the cooling pipeline 1201 is arranged inside the refrigerant channel 1202, and the refrigerant channel 1202 can be The internal cooling medium cools down the cooling pipeline 1201 to assist the compression pump 121 in converting gaseous hydrogen into liquid hydrogen; the refrigeration pump 122 can cool down the cooling medium and circulate the cooling medium inside the refrigerant channel 1202, which is beneficial to ensure the low temperature environment inside the refrigerant channel 1202; the reliquefaction control unit 123 can realize the control of the compression pump 121 and the refrigeration pump 122, so that the control component 150 can realize the control of the compression pump 121 and the refrigeration pump 122 through the reliquefaction control unit 123.

[0119] It should be noted that the electric energy required by the compression pump 121 can be supplied by the power generation device 130 , can also be supplied by the battery assembly 140 , or can also be supplied by both the power generation device 130 and the battery assembly 140 .

[0120] It should be noted that the electric energy required by the cooling pump 122 may be supplied by the power generation device 130 , may be supplied by the battery assembly 140 , or may be supplied by both the power generation device 130 and the battery assembly 140 .

[0121] According to a second aspect of an embodiment of the present disclosure, a vehicle is provided, comprising: a liquid hydrogen system as provided in any one of the first aspects above.

[0122] Since the vehicle provided in the embodiment of the present disclosure includes a liquid hydrogen system as proposed in any one of the first aspects above, it has all the beneficial effects of the liquid hydrogen system, which will not be elaborated here.

[0123] It should be emphasized that both the power generation device 130 and the battery assembly 140 can be used to output electrical energy, and the electrical energy output by the power generation device 130 and the battery assembly 140 can be used to support the operation of other devices or systems inside the vehicle.

[0124] Exemplarily, a railway locomotive vehicle comprises a liquid hydrogen system as set forth in any one of the first aspects above.

[0125] In the present disclosure, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0126] In the description of the present disclosure, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the present disclosure.

[0127] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", 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 disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0128] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A liquid hydrogen system, characterized in that: include: A liquid hydrogen storage device, used for storing hydrogen, wherein the hydrogen includes liquid phase hydrogen and gas phase hydrogen, and the liquid hydrogen storage device has a gas phase port and a liquid phase port; A reliquefaction device, used to liquefy the gas phase hydrogen into the liquid phase hydrogen, the gas phase port being connected to the gas inlet of the reliquefaction device, and the liquid outlet of the reliquefaction device being connected to the liquid phase port; A power generation device, the input port of which is connected to the liquid hydrogen storage device, and the power generation device is used to generate electricity using the hydrogen; A battery assembly connected to the power generation device, the battery assembly is used to store the electric energy generated by the power generation device; A control component, the reliquefaction device, the power generation device and the battery component are all communicatively connected to the control component, and the control component is used to control the operation of the reliquefaction device, the power generation device and the battery component.

2. The liquid hydrogen system according to claim 1, characterized in that: Also includes: a first liquid phase pipeline, one end of which is connected to the liquid phase port, and the other end of which is connected to the liquid outlet of the reliquefaction device; a second liquid phase pipeline, the second liquid phase pipeline being connected to the first liquid phase pipeline, and the second liquid phase pipeline being used to fill the liquid hydrogen storage device with the hydrogen; a first control valve, disposed in the first liquid phase pipeline, the first control valve being located between the second liquid phase pipeline and the liquid phase port; a second control valve, disposed in the first liquid phase pipeline, the second control valve being located between the second liquid phase pipeline and the reliquefaction device; Wherein, the first control valve and the second control valve are both communicatively connected to the control component.

3. The liquid hydrogen system according to claim 2, characterized in that: Also includes: A boosting pipeline, one end of which is connected to the first liquid phase pipeline, and the other end of which is connected to the gas phase port; A third control valve is disposed in the boost pipeline, and a signal of the third control valve is communicatively connected with the control component; A converter, disposed in the boost pipeline, and used to convert the liquid-phase hydrogen into the gas-phase hydrogen; Wherein, the connection point between the boost pipeline and the first liquid phase pipeline is located between the first control valve and the second control valve.

4. The liquid hydrogen system according to claim 1, characterized in that: Also includes: a first gas phase pipeline, one end of which is connected to the gas phase port, and the other end of which is connected to the gas inlet of the reliquefaction device; a second gas phase pipeline, the second gas phase pipeline being connected to the first gas phase pipeline, and the second gas phase pipeline being used to export the hydrogen; a fourth control valve, disposed in the first gas phase pipeline, the fourth control valve being located between the second gas phase pipeline and the gas phase port; a fifth control valve, disposed in the first gas phase pipeline, the fifth control valve being located between the second gas phase pipeline and the reliquefaction device; Wherein, the fourth control valve and the fifth control valve are both communicatively connected to the control component.

5. The liquid hydrogen system according to claim 1, characterized in that: Also includes: A discharge pipeline, wherein the air inlet end of the discharge pipeline is connected to the gas phase port, and the air outlet end of the discharge pipeline is used to be connected to the external environment; A discharge valve, arranged on the discharge pipeline, and used to control the conduction or cutoff of the discharge pipeline; An explosion-proof fan, arranged at the air outlet end of the discharge pipeline, for blowing away the gas phase hydrogen discharged from the discharge pipeline; The discharge valve has a preset pressure threshold. When the gas pressure in the discharge pipeline is greater than the pressure threshold, the discharge valve is turned on; when the gas pressure in the discharge pipeline is less than or equal to the pressure threshold, the discharge valve is turned off.

6. The liquid hydrogen system according to claim 1, characterized in that: Also includes: an application pipeline, one end of which is connected to the liquid phase port; A vaporizer, the other end of the application pipeline is connected to the liquid inlet of the vaporizer, and the vaporizer is used to vaporize the liquid hydrogen into the gaseous hydrogen; A buffer tank, wherein the gas outlet of the vaporizer is connected to the input port of the buffer tank, and the output port of the buffer tank is connected to the power generation device; a sixth control valve, disposed in the application pipeline, between the vaporizer and the liquid phase port; Wherein, the sixth control valve is communicatively connected with the control component.

7. The liquid hydrogen system according to claim 6, characterized in that: Also includes: A bypass pipeline, one end of which is connected to the gas phase port, and the other end of which is connected to the liquid inlet of the vaporizer; The seventh control valve is arranged in the bypass pipeline, and the seventh control valve is communicatively connected with the control component.

8. The liquid hydrogen system according to claim 6, characterized in that: The power generation device comprises: A hydrogen fuel cell, used to generate electricity using the hydrogen, the buffer tank being connected to the hydrogen fuel cell; A liquid cooling unit, disposed on the hydrogen fuel cell, and used to cool the hydrogen fuel cell; An air-cooled heat dissipation unit, used to cool the liquid cooling unit and the hydrogen fuel cell; A power generation control unit, which is in communication with the control assembly, and is used to control the hydrogen fuel cell, the liquid cooling unit, and the air cooling unit; a liquid inlet pipe, through which the liquid cooling unit inputs the cooling liquid after cooling into the evaporator, so that the cooling liquid after cooling heats the evaporator; A liquid return pipe, through which the evaporator discharges the cooling liquid after cooling back to the liquid cooling part.

9. The liquid hydrogen system according to claim 1, characterized in that: The liquid hydrogen storage device comprises: A liquid hydrogen storage tank, used for storing the hydrogen, wherein the gas phase port and the liquid phase port are both formed in the liquid hydrogen storage tank; A detection unit, disposed in the liquid hydrogen storage tank, for detecting parameters inside the liquid hydrogen storage tank; The detection unit is communicatively connected to the control component, and the detection unit is used to transmit the parameters to the control component.

10. The liquid hydrogen system according to claim 9, characterized in that: The reliquefaction device comprises: a cooling pipeline, one end of which is used to form an air inlet of the reliquefaction device, and the other end of which is used to form a liquid outlet of the reliquefaction device; A compression pump, disposed in the cooling pipeline, for compressing the gas phase hydrogen into the liquid phase hydrogen; A refrigerant channel, wherein the cooling pipeline is located inside the refrigerant channel, and the refrigerant channel contains a cooling medium; A refrigeration pump, the refrigeration pump is used to cool the cooling medium, the refrigeration pump has a pump inlet end and a pumping end, the pump inlet end and the pumping end are both connected to the refrigerant channel, and the cooling pipeline is located between the pump inlet end and the pumping end; a reliquefaction control unit, communicatively connected to the control assembly, the reliquefaction control unit being used to control the compression pump and the refrigeration pump; Wherein, the power generation device and / or the battery assembly are electrically connected to the compression pump, and the power generation device and / or the battery assembly are electrically connected to the refrigeration pump.

11. A vehicle, characterized in that: include: A liquid hydrogen system as claimed in any one of claims 1 to 10.

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