Hydrogen storage system and vehicle

Abstract

The utility model discloses a hydrogen storage system and a vehicle. The hydrogen storage system comprises a hydrogen storage device, and the warming device is connected with an exhaust port of the fuel cell engine through a switch valve, the warming device is used for carrying out heat exchange on gas exhausted by the fuel cell engine and the hydrogen storage device, and the switch valve is used for controlling gas circulation between the fuel cell engine and the warming device. By adopting the system, the condition that the hydrogen storage device triggers the lower limit value of the working temperature under the extreme condition of the fuel cell vehicle can be effectively avoided on the basis of not influencing the vehicle performance, so that the problem that the fuel cell stops working due to the fact that the hydrogen storage device triggers the lower limit value of the working temperature is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a hydrogen storage system and a vehicle. Background Art

[0002] The components of a fuel cell vehicle need to work under low-temperature conditions. During the operation of the fuel cell, the gas temperature in the hydrogen storage device will drop accordingly and even trigger the lower limit of the working temperature. At this time, according to the vehicle safety strategy, the fuel cell will stop working.

[0003] In the related art, when a fuel cell vehicle operates in a low-temperature environment, the power of the fuel cell is restricted to slow down the pressure drop rate of the hydrogen storage device, thereby slowing down the cooling rate of the hydrogen storage device. However, this method will affect the performance of the fuel cell vehicle, and in extreme cases of the hydrogen fuel cell, there is still a situation where the gas temperature in the hydrogen storage device triggers the lower limit of the working temperature of the hydrogen storage device. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the utility model is to provide a hydrogen storage system. By using this system, on the basis of not affecting the vehicle performance, it can effectively avoid the situation that the hydrogen storage device of a fuel cell vehicle triggers the lower limit value of the working temperature in extreme cases, and further avoid the problem that the fuel cell stops working due to the hydrogen storage device triggering the lower limit value of the working temperature.

[0005] A second object of the utility model is to provide a vehicle.

[0006] To solve the above problems, an embodiment of the first aspect of the utility model provides a hydrogen storage system, including: a hydrogen storage device; a temperature increasing device, the temperature increasing device is connected to the exhaust port of the fuel cell engine through a switching valve, the temperature increasing device is used for performing heat exchange between the gas discharged from the fuel cell engine and the hydrogen storage device, and the switching valve is used for controlling the gas flow between the fuel cell engine and the temperature increasing device.

[0007] According to the hydrogen storage system of the utility model, based on the provided temperature increasing device, the gas in the hydrogen storage device is heated by using the gas discharged from the fuel cell engine. Thus, compared with the prior art in which the cooling rate in the hydrogen storage device is slowed down by restricting the power of the fuel cell, in this application, the temperature of the gas in the hydrogen storage device is increased by the temperature increasing device, rather than changing its temperature by restricting the power of the fuel cell. Therefore, on the premise of not affecting the vehicle performance, it can effectively avoid the situation that the hydrogen storage device of a fuel cell vehicle triggers the lower limit value of the working temperature in extreme cases, and further avoid the problem that the fuel cell stops working due to the hydrogen storage device triggering the lower limit value of the working temperature.

[0008] In some embodiments, the temperature increasing device includes an air inlet, the switching valve is a three-way valve, a first valve port of the three-way valve is connected to an exhaust port of the fuel cell engine, a second valve port of the three-way valve is connected to the air inlet, and a third valve port of the three-way valve is connected to a vehicle exhaust pipe.

[0009] In some embodiments, the exhaust port of the fuel cell engine is connected to the vehicle exhaust pipe, the temperature increasing device includes an air inlet, and the air inlet is connected to the exhaust port through an adapter pipeline; the switching valve includes a first two-way two-position solenoid valve, and the first two-way two-position solenoid valve is arranged on the adapter pipeline.

[0010] In some embodiments, a second two-way two-position solenoid valve is arranged on the vehicle exhaust pipe, and the second two-way two-position solenoid valve is used to control the flow of the gas discharged from the fuel cell engine in the vehicle exhaust pipe.

[0011] In some embodiments, the temperature increasing device further includes an exhaust port, and the exhaust port is used to discharge the gas flowing in the temperature increasing device.

[0012] In some embodiments, the temperature increasing device adopts a bottle-shaped hollow structure, and the hydrogen storage device is arranged inside the temperature increasing device.

[0013] In some embodiments, the hydrogen storage device includes a hydrogen filling port and a hydrogen filling pipeline connected to the hydrogen filling port; the temperature increasing device further includes a through hole for the hydrogen filling pipeline to pass through.

[0014] In some embodiments, the temperature increasing device adopts a pipeline form, and the temperature increasing device covers or winds around the surface of the hydrogen storage device.

[0015] In some embodiments, the hydrogen storage device includes a plurality of hydrogen storage bottles; the number of the temperature increasing devices is one, and the temperature increasing device is used to perform heat exchange between the gas discharged from the fuel cell engine and all the hydrogen storage bottles; or, the number of the temperature increasing devices is multiple, each temperature increasing device is arranged in one-to-one correspondence with each hydrogen storage bottle, and the temperature increasing device is used to perform heat exchange between the received gas and the corresponding hydrogen storage bottle.

[0016] A second object of the present invention is to provide a vehicle including the hydrogen storage system of the above embodiments.

[0017] According to the vehicle of the embodiment of the present invention, through the hydrogen storage system of the above embodiment, it is possible to effectively avoid the situation that the hydrogen storage device triggers the lower limit value of the working temperature in extreme cases without affecting the vehicle performance, and further avoid the problem that the fuel cell stops working due to the hydrogen storage device triggering the lower limit value of the working temperature.

[0018] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Description of the Drawings

[0019] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0020] Figure 1 is a schematic diagram of the temperature drop curve of a hydrogen storage device in the prior art;

[0021] Figure 2 is a structural block diagram of a hydrogen storage system according to an embodiment of the present utility model;

[0022] Figure 3 is a schematic structural diagram of a hydrogen storage system according to an embodiment of the present utility model;

[0023] Figure 4 is a schematic diagram of the temperature drop curve of a hydrogen storage device according to an embodiment of the present utility model;

[0024] Figure 5 is a flowchart of a control method for a hydrogen storage system according to an embodiment of the present utility model;

[0025] Figure 6 is a structural block diagram of a vehicle according to an embodiment of the present utility model.

[0026] Reference Signs:

[0027] Vehicle 1000;

[0028] Hydrogen storage system 100;

[0029] Hydrogen storage device 10; Temperature increasing device 20;

[0030] On-off valve 1; Fuel cell engine 2; Intake port 3; Exhaust port 4; Vehicle exhaust pipe 5; Hydrogen refueling port 6; Hydrogen refueling pipeline 7; Hydrogen storage valve 8; Temperature sensor 9; Pressure sensor 11; Hydrogen storage cylinder 12, Hydrogen inlet 13; Air inlet 14. Detailed Embodiments

[0031] Embodiments of the present utility model will be described in detail below. The embodiments described with reference to the drawings are exemplary. Embodiments of the present utility model will be described in detail below.

[0032] Currently, in some urban areas of China, the demonstration development and application of fuel cell commercial vehicles such as buses and heavy trucks have been realized. With the increase in applications and demonstration scenarios, the environmental adaptability requirements for fuel cell vehicles are getting higher and higher, requiring that the components of fuel cell vehicles should meet the working conditions at a temperature of minus 30°C.

[0033] With the development of hydrogen storage cylinder technology, the hydrogen storage technology of fuel cell vehicles tends to use type IV hydrogen storage cylinders. The characteristics of type IV hydrogen storage cylinders are plastic inner liners. Due to the characteristics of the plastic material itself, the low-temperature performance is poor. At low temperatures, the plasticity of the plastic decreases. Considering safety factors, the operating temperature of type IV cylinders shall not be lower than -40°C according to national standards.

[0034] When a fuel cell vehicle operates in a low-temperature environment, the power of the fuel cell is restricted to slow down the pressure drop rate of the hydrogen storage device, thereby slowing down the cooling rate of the hydrogen storage device. Figure 1 Figure 1 is the temperature drop curve at different temperatures of a hydrogen storage device with an initial pressure of 70 Mpa and a volume of 57 L under the working condition of a 10-kw fuel cell. Figure 1 It can be seen that after restricting the fuel cell power to 10 kw, if the gas temperature of the hydrogen storage device 10 is -30°C, the temperature of the gas cylinder drops to -36°C after 1000 seconds. According to the simulation trend, it is possible for the fuel cell to continue working and reach -40°C, and the dynamic performance of the fuel cell vehicle is also affected after restricting the power.

[0035] To solve the above problems, the first aspect embodiment of the present utility model proposes a hydrogen storage system. By adopting this system, it is possible to effectively avoid the situation where the working temperature lower limit value of the hydrogen storage device of a fuel cell vehicle is triggered in extreme cases without affecting the vehicle performance, and thus the problem of the fuel cell stopping working due to the triggering of the working temperature lower limit value of the hydrogen storage device will not occur.

[0036] The following refers to Figure 2 Describe the hydrogen storage system according to the embodiment of the present utility model. As Figure 2 shown, the hydrogen storage system 100 includes a hydrogen storage device 10 and a temperature increasing device 20.

[0037] Among them, the temperature increasing device 20 is connected to the exhaust port of the fuel cell engine 2 through a switching valve 1. The temperature increasing device 20 is used to exchange heat between the gas discharged from the fuel cell engine 2 and the hydrogen storage device 10, and the switching valve 1 is used to control the gas flow between the fuel cell engine 2 and the temperature increasing device 20.

[0038] Specifically, when the hydrogen storage device of a fuel cell vehicle is in operation, the hydrogen gas inside undergoes a pressure reduction process. As the pressure of the hydrogen storage device decreases, the hydrogen gas expands and does external work, which causes the temperature inside the hydrogen storage device to drop. For example, if the temperature inside the hydrogen storage device is -30°C, the temperature inside the hydrogen storage device will continue to decrease and fall below this temperature until it reaches the lower limit value of the operating temperature of the hydrogen storage device, which is -40°C. At this time, according to the vehicle safety strategy, it is necessary to control the fuel cell to stop operating. To solve this problem, the hydrogen storage system 100 of the present application is equipped with a temperature increasing device 20. When the fuel cell vehicle is operating under low-temperature conditions, for example, when it is detected that the gas temperature of the hydrogen storage device 10 is lower than a certain value, the control switch valve 1 is opened to control the gas flow between the fuel cell engine 2 and the temperature increasing device 20. At this time, the temperature increasing device 20 can perform heat exchange between the gas discharged from the fuel cell engine 2 and the hydrogen storage device 10, that is, by introducing the heat source discharged from the fuel cell engine 2 into the temperature increasing device 20, and the temperature increasing device 20 then heats the gas inside the hydrogen storage device 10 by discharging the heat source, thereby increasing the temperature of the hydrogen gas inside the hydrogen storage device 10. Thus, compared with the prior art in which the cooling rate of the hydrogen storage device 10 is reduced by restricting the fuel cell power, in the present application, the temperature of the hydrogen gas inside the hydrogen storage device 10 is increased by the temperature increasing device 20, rather than changing its temperature by restricting the fuel cell power. Therefore, on the basis of not affecting the vehicle performance, it can effectively avoid the situation where the hydrogen storage device 10 triggers the lower limit value of the operating temperature in extreme cases, and further prevent the problem of the fuel cell stopping working due to the hydrogen storage device 10 triggering the lower limit value of the operating temperature.

[0039] According to the hydrogen storage system 100 of the present invention, based on the provided temperature increasing device 20, the gas inside the hydrogen storage device 10 is heated by using the gas discharged from the fuel cell engine 2. Thus, compared with the prior art in which the cooling rate of the hydrogen storage device 10 is reduced by restricting the fuel cell power, in the present application, the temperature of the hydrogen gas inside the hydrogen storage device 10 is increased by the temperature increasing device 20, rather than changing its temperature by restricting the fuel cell power. Therefore, on the premise of not affecting the vehicle performance, it can effectively avoid the situation where the hydrogen storage device 10 triggers the lower limit value of the operating temperature in extreme cases, and further prevent the problem of the fuel cell stopping working due to the hydrogen storage device 10 triggering the lower limit value of the operating temperature.

[0040] In some embodiments, as Figure 3 shown, the temperature increasing device 20 includes an air inlet 3. The switch valve 1 is a three-way valve. The first valve port A of the three-way valve is connected to the exhaust port 4 of the fuel cell engine 2. The second valve port B of the three-way valve is connected to the air inlet 3. The third valve port C of the three-way valve is connected to the vehicle exhaust pipe 5.

[0041] Specifically, when the fuel cell engine 2 discharges gas normally through the vehicle exhaust pipe 5, the first valve port A and the third valve port C of the three-way valve 1 are controlled to conduct, and the second valve port B is controlled to cut off. The gas discharged from the fuel cell engine 2 enters the first valve port A of the three-way valve 1 through the exhaust port 4 of the fuel cell engine 2, and then is discharged through the third valve port C of the three-way valve 1 by the vehicle exhaust pipe 5. If the hydrogen storage device 10 needs to be heated, for example, if the detected real-time temperature of the hydrogen storage device 10 is lower than the preset low temperature threshold, and the preset low temperature threshold can be -20 °C, then the first valve port A and the second valve port B of the three-way valve 1 are controlled to conduct, and the third valve port C is controlled to close. The gas discharged from the fuel cell engine 2 enters the first valve port A of the three-way valve through the exhaust port of the fuel cell engine 2, and then enters the heating device 10 through the second valve port B of the three-way valve and the intake port 3 of the heating device 10. At this time, the heating device can exchange heat between the gas discharged from the fuel cell engine 2 and the gas in the hydrogen storage device 10 to increase the temperature of the hydrogen gas in the hydrogen storage device 10.

[0042] In some embodiments, the exhaust port 4 of the fuel cell engine 2 is connected to the vehicle exhaust pipe 5, as Figure 3 shown. The heating device 20 includes an intake port 3, and the intake port 3 is connected to the exhaust port 4 through an adapter pipe; the switching valve includes a first two-way two-position solenoid valve, and the first two-way two-position solenoid valve is arranged on the adapter pipe.

[0043] Specifically, when the fuel cell engine 2 discharges gas normally through the vehicle exhaust pipe 5, the first two-way two-position solenoid valve is controlled to close. At this time, the gas discharged from the fuel cell engine 2 flows through the exhaust port 4 to the vehicle exhaust pipe 5 to be discharged through the vehicle exhaust pipe 5. If the hydrogen storage device 10 needs to be heated, the first two-way two-position solenoid valve is controlled to open. At this time, the gas discharged from the fuel cell engine 2 flows through the exhaust port 4 and the first two-way two-position solenoid valve into the adapter pipe, and then the gas enters the intake port 3 of the heating device 20 through the adapter pipe. At this time, the heating device 20 can exchange heat between the gas discharged from the fuel cell engine 2 and the hydrogen storage device 10 to increase the temperature of the hydrogen gas in the hydrogen storage device 10. It should be noted that when the first two-way two-position solenoid valve is open, the gas discharged from the fuel cell engine 2 not only flows into the heating device 20 through the first two-way two-position solenoid valve to increase the temperature of the hydrogen gas in the hydrogen storage device 10, but also can flow into the vehicle exhaust pipe 5.

[0044] In some embodiments, a second two-way two-position solenoid valve is arranged on the vehicle exhaust pipe, and the second two-way two-position solenoid valve is used to control the flow of the gas discharged from the fuel cell engine in the vehicle exhaust pipe.

[0045] Specifically, when the fuel cell engine 2 normally discharges gas through the vehicle exhaust pipe 5, the first two-way two-position solenoid valve is controlled to close and the second two-way two-position solenoid valve is controlled to open. At this time, the gas discharged from the fuel cell engine 2 flows into the vehicle exhaust pipe 5 through the second two-way two-position solenoid valve and is discharged through the vehicle exhaust pipe 5; or, if the hydrogen storage device 10 needs to be heated, the first two-way two-position solenoid valve is controlled to open and the second two-way two-position solenoid valve is controlled to close. At this time, the gas discharged from the fuel cell engine 2 flows into the transfer pipeline through the exhaust port 4 and the first two-way two-position solenoid valve, and then the gas enters the intake port 3 of the heating device 20 through the transfer pipeline. At this time, the heating device 20 can exchange heat between the gas discharged from the fuel cell engine 2 and the hydrogen storage device 10 to increase the temperature of the hydrogen gas in the hydrogen storage device 10; or, when heating the gas in the hydrogen storage device 10 while the fuel cell engine 2 is normally discharging gas, both the first two-way two-position solenoid valve and the second two-way two-position solenoid valve are controlled to open. At this time, the gas discharged from the fuel cell engine 2 flows into the vehicle exhaust pipe 5 through the second two-way two-position solenoid valve and into the heating device 20 through the first two-way two-position solenoid valve to increase the temperature of the hydrogen gas in the hydrogen storage device 10.

[0046] In some embodiments, as Figure 3 shown, the heating device 20 further includes an exhaust port for discharging the gas flowing in the heating device.

[0047] Specifically, the gas generated by the fuel cell engine 2 enters the heating device 20 through the intake port 3 of the heating device 20, exchanges heat with the hydrogen storage device 10 in the heating device 20, and is discharged through the exhaust port of the heating device 20, thereby preventing the gas from staying or accumulating inside the heating device 20 for a long time.

[0048] In some embodiments, as Figure 3 shown, the heating device 20 adopts a bottle-shaped hollow structure, and the hydrogen storage device 10 is arranged inside the heating device 20. Among them, the bottle-shaped hollow structure refers to a structure with a hollow interior and an external shape like a bottle.

[0049] Specifically, the hydrogen storage device 10 is arranged inside the heating device 20, that is, the cavity of the bottle-shaped hollow structure of the heating device 20 is used to accommodate the hydrogen storage device 10 to reduce the space occupied by the hydrogen storage system 100. At the same time, since the hydrogen storage device 10 is located inside the heating device 20, the heat generated by the heating device 20 can be directly transferred to the hydrogen storage device 10, improving the heat exchange efficiency between the gas in the heating device 20 and the hydrogen storage device 10, and thus quickly increasing the temperature of the gas in the hydrogen storage device 10.

[0050] In some embodiments, as Figure 3As shown, the hydrogen storage device 10 includes a hydrogen filling port 6 and a hydrogen filling pipeline 7 connected to the hydrogen filling port; the temperature increasing device 10 further includes a through hole for the hydrogen filling pipeline 7 to pass through.

[0051] Specifically, the hydrogen filling pipeline 7 of the hydrogen storage device 10 passes through the temperature increasing device 20 through the through hole. Based on this, when hydrogen needs to be replenished to the hydrogen storage device 10, hydrogen is added through the hydrogen filling port 6 and then enters the hydrogen storage device 10 through the hydrogen filling pipeline 7.

[0052] In the embodiment, the hydrogen filling pipeline 7 is connected to the hydrogen storage valve 8 of the hydrogen storage device 10, and the hydrogen storage valve 8 is used to control whether hydrogen enters the hydrogen storage device 10 through the hydrogen filling pipeline 7. In addition, a temperature sensor 9 and a pressure sensor 11 are arranged on the hydrogen storage valve 8. Among them, the pressure sensor 11 is used to detect the air pressure inside the hydrogen storage device 10, and the temperature sensor 9 is used to detect the gas temperature inside the hydrogen storage device 10, so as to control the opening or closing of the temperature increasing device 20 according to the gas temperature of the hydrogen storage device 10.

[0053] In some embodiments, as Figure 3 shown, the temperature increasing device 20 is in the form of a pipeline, and the temperature increasing device 20 covers or winds around the surface of the hydrogen storage device 10.

[0054] Specifically, the temperature increasing device 20 is in the form of a pipeline and covers or winds around the surface of the hydrogen storage device 10, which can more fully fit the surface of the hydrogen storage device 10, thereby significantly increasing the contact area between the temperature increasing device 20 and the hydrogen storage device 10, shortening the heat conduction path between the temperature increasing device 20 and the hydrogen storage device 10, improving the heat exchange efficiency between the temperature increasing device 20 and the hydrogen storage device 10, and thus more quickly increasing the gas temperature inside the hydrogen storage device 10.

[0055] In the embodiment, Figure 4 are the temperature drop curves of a 70MPa initial pressure and 57L hydrogen storage device 10 under different ambient temperatures when the fuel cell is operating at 100kw and 10kw respectively. From Figure 4 it can be seen that when the gas temperature of the hydrogen storage device 10 is -30°C and the fuel cell power is 100kw, the gas temperature of the hydrogen storage device 10 can reach the lower limit of the operating temperature of -40°C in about 140 seconds.

[0056] That is to say, after the gas temperature of the hydrogen storage device 10 drops to the preset low temperature threshold, the gas temperature is extremely likely to drop to the lower limit of the operating temperature. The preset low temperature threshold is higher than the lower limit of the operating temperature. The preset low temperature threshold can be -20 °C or -30 °C, and there is no limitation on this. Based on this, after the temperature sensor 9 detects that the gas temperature of the hydrogen storage device 10 is lower than the preset low temperature threshold, it controls the opening of the switching valve 1 to control the gas flow between the fuel cell engine 2 and the temperature increasing device 20. At this time, the temperature increasing device 20 can perform heat exchange between the gas discharged from the fuel cell engine 2 and the hydrogen storage device 10, thereby increasing the temperature of the hydrogen gas in the hydrogen storage device 10. If the gas temperature of the hydrogen storage device 10 is higher than the preset temperature threshold, where the preset temperature threshold can be set according to the actual situation, and the preset temperature threshold can be 20 °C, at this time, the gas in the hydrogen storage device 10 does not need to be heated, then the control switching valve 1 is closed to control the gas cut-off between the fuel cell engine 2 and the temperature increasing device 20.

[0057] In addition, it should be noted that different types of hydrogen storage devices 10 correspond to different preset low temperature thresholds.

[0058] In some embodiments, the hydrogen storage device 10 includes a plurality of hydrogen storage cylinders 12.

[0059] Among them, the number of the temperature increasing devices 20 is one, and the temperature increasing device 20 is used to perform heat exchange between the gas discharged from the fuel cell engine 2 and all the hydrogen storage cylinders 12; or, the number of the temperature increasing devices 20 is multiple, and each temperature increasing device 20 is arranged in one-to-one correspondence with each hydrogen storage cylinder 12, and the temperature increasing device 20 is used to perform heat exchange between the received gas and the corresponding hydrogen storage cylinder 12.

[0060] Specifically, when the number of the temperature increasing devices 20 is one, the temperature increasing device 20 raises the temperature of multiple hydrogen storage cylinders 12, thereby avoiding the problem that the fuel cell stops working due to the temperature lower limit of the hydrogen storage device 10 being triggered, and at the same time, the cost can be effectively reduced; or, when the number of the temperature increasing devices 20 is multiple, each temperature increasing device 20 is arranged in one-to-one correspondence with each hydrogen storage cylinder 12, and the corresponding temperature increasing device 20 can be controlled to be turned on or off according to the gas temperature of each hydrogen storage cylinder 12, so as to ensure the temperature increasing effect of each hydrogen storage cylinder 12.

[0061] In the embodiment, as Figure 3 shown, the fuel cell engine 2 includes a hydrogen inlet 13 and an air inlet 14, which are respectively responsible for introducing hydrogen and air into the fuel cell engine 2 to ensure the operation of the fuel cell engine 2.

[0062] Next, refer to Figure 5 shown to give an example of the control method of the hydrogen storage system according to the embodiment of the present invention, and the specific content is as follows.

[0063] Step S3: The temperature sensor detects that the gas temperature of the hydrogen storage device is lower than the preset low temperature threshold, where the preset low temperature threshold can be -20°C or -30°C.

[0064] Step S4: Control the warming device to turn on, that is, turn on the control switch valve to control the gas flow between the fuel cell engine and the warming device. At this time, the warming device can perform heat exchange between the gas discharged from the fuel cell engine and the hydrogen storage device.

[0065] Step S5: Control the fuel cell engine to switch from normal exhaust through the vehicle exhaust pipe to exhaust to the warming device. That is to say, when the switch valve is a three-way valve, control the first valve port and the second valve port of the three-way valve to conduct, and control the third valve port to close.

[0066] Step S6: The temperature sensor detects that the gas temperature of the hydrogen storage device is higher than the preset temperature threshold, where the preset temperature threshold can be 30°C.

[0067] Step S7: Control the warming device to turn off, that is, turn off the control switch valve to control the gas between the fuel cell engine and the warming device not to flow.

[0068] Step S8: Control the fuel cell engine to switch from exhausting to the warming device to normal exhaust through the vehicle exhaust pipe. That is to say, when the switch valve is a three-way valve, control the first valve port and the third valve port of the three-way valve to conduct, and control the second valve port to close.

[0069] A second aspect embodiment of the present invention proposes a vehicle 1000, as Figure 6 shown, the vehicle 1000 includes the hydrogen storage system 100 of the above embodiment.

[0070] According to the vehicle 1000 of the present invention, through the hydrogen storage system 100 of the above embodiment, it is possible to effectively avoid the situation where the hydrogen storage device triggers the lower limit of the working temperature in extreme cases without affecting the vehicle performance, and thus the problem that the fuel cell stops working due to the hydrogen storage device 10 triggering the lower limit of the working temperature will not occur.

[0071] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection 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.

[0072] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A hydrogen storage system, characterized in that, Comprising: A hydrogen storage device; A temperature increasing device, which is connected to the exhaust port of the fuel cell engine through a switching valve. The temperature increasing device is used for performing heat exchange between the gas discharged from the fuel cell engine and the hydrogen storage device, and the switching valve is used for controlling the gas flow between the fuel cell engine and the temperature increasing device.

2. The hydrogen storage system according to claim 1, wherein The temperature increasing device includes an air inlet. The switching valve is a three-way valve. The first valve port of the three-way valve is connected to the exhaust port of the fuel cell engine. The second valve port of the three-way valve is connected to the air inlet. The third valve port of the three-way valve is connected to the vehicle exhaust pipe.

3. The hydrogen storage system according to claim 1, characterized in that, The exhaust port of the fuel cell engine is connected to the vehicle exhaust pipe. The temperature increasing device includes an air inlet, and the air inlet is connected to the exhaust port through a transfer pipeline; The switching valve includes a first two-way two-position solenoid valve, and the first two-way two-position solenoid valve is arranged on the transfer pipeline.

4. The hydrogen storage system according to claim 3, wherein A second two-way two-position solenoid valve is arranged on the vehicle exhaust pipe, and the second two-way two-position solenoid valve is used for controlling the flow of the gas discharged from the fuel cell engine in the vehicle exhaust pipe.

5. The hydrogen storage system according to any one of claims 2-4, characterized in that, The temperature increasing device further includes an exhaust port, and the exhaust port is used for discharging the gas flowing in the temperature increasing device.

6. The hydrogen storage system according to any one of claims 1-4, characterized in that, The temperature increasing device adopts a bottle-shaped hollow structure, and the hydrogen storage device is arranged inside the temperature increasing device.

7. The hydrogen storage system according to claim 6, wherein The hydrogen storage device includes a hydrogen filling port and a hydrogen filling pipeline connected to the hydrogen filling port; The temperature increasing device further includes a through hole, and the through hole is used for allowing the hydrogen filling pipeline to pass through.

8. The hydrogen storage system according to any one of claims 1 to 4, characterized in that, The temperature increasing device adopts a pipeline form, and the temperature increasing device covers or winds around the surface of the hydrogen storage device.

9. The hydrogen storage system according to claim 1, characterized in that, The hydrogen storage device includes a plurality of hydrogen storage bottles; The number of the temperature increasing devices is one, and the temperature increasing device is used for performing heat exchange between the gas discharged from the fuel cell engine and all the hydrogen storage bottles; Alternatively, the number of the temperature increasing devices is multiple, and each temperature increasing device is arranged in one-to-one correspondence with each hydrogen storage bottle. The temperature increasing device is used for performing heat exchange between the received gas and the corresponding hydrogen storage bottle.

10. A vehicle, characterized in that, Including the hydrogen storage system according to any one of claims 1-9.

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