Vehicle-mounted hydrogen system, vehicle control method and vehicle

Abstract

The invention relates to the technical field of vehicles, in particular to a vehicle-mounted hydrogen system, a vehicle control method and a vehicle. The vehicle control method comprises the following steps: acquiring hydrogen state parameters after the hydrogen storage piece is discharged; and according to the hydrogen state parameters, the hydrogen pressure in the hydrogen storage piece is adjusted so that the hydrogen pressure in the hydrogen storage piece can be discharged to the predicted hydrogen pressure, and therefore the hydrogen of the vehicle can be effectively and safely discharged.

Description

Technical Field

[0001] The present invention relates to the field of vehicle technology, and in particular to a vehicle-mounted hydrogen system, a vehicle control method and a vehicle. Background Art

[0002] In related technologies, hydrogen storage for hydrogen fuel cell vehicles is generally in the form of high-pressure gaseous hydrogen, which is stored in high-pressure gas cylinders. If you want to discharge the hydrogen in the car to a safe range, you need to use special hydrogen discharge equipment or place the car in a designated place for discharge. However, since the outlet during the discharge process is pure hydrogen, there is a certain safety risk.

[0003] The existing patent, patent application number "CN202110180640.5", patent name "A fuel cell system integrated with hydrogen purge device and tail exhaust dilution function air subsystem and its control method", the technical solution proposed in the patent is mainly through the integrated air three-way valve. When in use, the air is purified by the air filter, pressurized by the air compressor and cooled by the intercooler, and then flows through the air three-way valve for diversion, thereby realizing the shell ventilation function and tail exhaust hydrogen dilution function. The disadvantage of the above technical solution is that the hydrogen remaining in the packaging box after the normal reaction with the fuel cell stack (3) is diluted, and the hydrogen in the hydrogen tank cannot be directly discharged and diluted.

[0004] The existing patent, patent application number "CN201911029967.1", patent name "Fuel Cell Vehicle Tail Exhaust Hydrogen Concentration Calculation Method, Exhaust Control System (6) and Its Use Method, Storage Medium", can calculate the hydrogen concentration of fuel cell vehicle tail exhaust, thereby providing data for the fuel cell exhaust control system (6), so that the fuel cell exhaust control system (6) can control the hydrogen concentration in the mixed gas discharged from the exhaust pipe. The disadvantage of the above technical solution is that it can only dilute the residual hydrogen that has not reacted in the stack during the operation of the vehicle. If this method is used to discharge the hydrogen in the hydrogen storage bottle, a large amount of hydrogen will pass through the stack alone, and the stack will be damaged accordingly. Summary of the invention

[0005] The present invention provides a vehicle-mounted hydrogen system, a vehicle control method and a vehicle, which can effectively and safely discharge hydrogen from the vehicle.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] According to the first aspect of the present application, there is provided a vehicle-mounted hydrogen system, which includes: a hydrogen storage component; a pressure reducing assembly, which has an air inlet end and an air outlet end; the air inlet end is connected to the hydrogen storage component; the pressure reducing assembly is used to adjust the pressure of hydrogen discharged from the hydrogen storage component; a fuel cell stack, which is connected to the air outlet end; an exhaust assembly, which is connected to the air outlet end; and an air assembly, which is connected to the fuel cell stack and to the exhaust assembly.

[0008] Based on the above technical solution, the hydrogen part of the vehicle hydrogen system is divided into two pipelines, one of which is connected to the fuel cell stack, and the other is connected to the exhaust component. The air part of the vehicle hydrogen system is also divided into two pipelines, the same as the hydrogen part, one pipeline is connected to the fuel cell stack, and the other is connected to the exhaust component. In the case that the hydrogen in the vehicle hydrogen system exceeds the safe hydrogen range, the hydrogen can be discharged as needed through the exhaust component, safely discharging hydrogen while reducing the risk of the vehicle.

[0009] In a possible implementation, the exhaust assembly includes: a dilution tank and a pressure relief valve, one end of the pressure relief valve is connected to the gas outlet, and the other end of the pressure relief valve is connected to the dilution tank.

[0010] Alternatively, the pressure relief valve may be replaced by a bypass valve, which has no minimum opening pressure.

[0011] Based on the above technical solution, when the hydrogen pressure discharged from the outlet of the pressure reducing assembly is greater than the starting pressure of the pressure relief valve, the pressure relief valve opens, and the hydrogen can enter the dilution tank through the pressure relief valve and mix and dilute with the air discharged from the air assembly.

[0012] In a possible embodiment, the vehicle-mounted hydrogen system also includes: a control system, which is electrically connected to the pressure reducing assembly; the control system is used to detect the state parameters of the hydrogen after being discharged from the hydrogen storage component, and control the pressure reducing assembly to adjust the state parameters of the hydrogen after being discharged according to the hydrogen state parameters.

[0013] Based on the above technical solution, the control system can control the opening angle of the decompression component according to the hydrogen state parameters, without the need for manual control of the opening angle of the decompression component.

[0014] In one possible implementation, the control system includes: a concentration sensor, which is used to detect the hydrogen concentration at the outlet of the dilution tank; a controller, which is electrically connected to the concentration sensor; and the controller is used to obtain data detected by the concentration sensor and control the pressure reduction component according to the data detected by the concentration sensor.

[0015] Based on the above technical solution, the control system can control the opening angle of the pressure reducing assembly according to the hydrogen concentration in the mixed gas in the dilution tank, so as to ensure that the concentration of discharged hydrogen is within a safe range, and hydrogen discharge does not need to be carried out at a designated site.

[0016] In a possible embodiment, the control system also includes: a first pressure sensor, which is arranged at the gas outlet of the pressure reducing assembly; the first pressure sensor is used to detect the hydrogen pressure at the gas outlet; wherein the controller is also electrically connected to the first pressure sensor, and is also used to obtain the data detected by the first pressure sensor, and control the pressure reducing assembly according to the data detected by the first pressure sensor.

[0017] Based on the above technical solution, if the hydrogen pressure is high, it means that the hydrogen concentration is high. The control system can control the opening angle of the pressure reducing component according to the hydrogen pressure at the outlet, so as to ensure that the discharged hydrogen pressure is within a safe range, and hydrogen discharge does not need to be carried out in a designated site.

[0018] In a possible implementation, the air component includes: an air compressor assembly, which is connected to the fuel cell stack and the dilution tank; wherein the control system is electrically connected to the air compressor assembly; the control system is also used to control the rotation speed of the air compressor assembly.

[0019] Based on the above technical solution, the control system can control the rotation speed of the air compressor assembly to achieve the purpose of controlling the air flow rate.

[0020] According to the second aspect of the present application, a vehicle control method is provided, which is applied to any one of the on-board hydrogen systems provided in the first aspect above, and the on-board hydrogen system is used to adjust the hydrogen pressure discharged from the hydrogen storage component; the method includes: obtaining the hydrogen state parameters after the hydrogen storage component is discharged; according to the hydrogen state parameters, adjusting the hydrogen pressure in the hydrogen storage component so that the hydrogen pressure in the hydrogen storage component is discharged to the expected hydrogen pressure.

[0021] Based on the above technical solution, the control system adjusts the hydrogen pressure inside the hydrogen storage component by obtaining the hydrogen state parameters discharged from the hydrogen storage component, so that the hydrogen pressure inside the hydrogen storage component is discharged to a safe hydrogen pressure, effectively and safely discharging the vehicle's hydrogen, reducing the potential hydrogen safety risks of fuel cell vehicles.

[0022] In a possible implementation, the hydrogen state parameter includes the hydrogen pressure at the outlet of the decompression component. According to the hydrogen state parameter, the hydrogen pressure in the hydrogen storage component is adjusted so that the hydrogen pressure in the hydrogen storage component is discharged to the expected hydrogen pressure, including: when the hydrogen pressure at the outlet of the decompression component meets a preset condition, hydrogen is continuously discharged until the hydrogen pressure in the hydrogen storage component is discharged to the expected hydrogen pressure.

[0023] Among them, the preset condition is that the hydrogen pressure at the outlet end of the pressure reducing assembly is greater than the starting pressure of the pressure relief valve and less than or equal to the maximum pressure of the pressure relief valve; when the hydrogen pressure at the outlet end of the pressure reducing assembly is equal to the maximum pressure of the pressure relief valve, the hydrogen pressure at the outlet end of the pressure reducing assembly is less than or equal to the hydrogen pressure in the hydrogen storage component.

[0024] Based on the above technical solution, when the hydrogen pressure at the outlet end of the pressure reducing assembly is greater than the starting pressure of the pressure relief valve and less than or equal to the maximum pressure of the pressure relief valve, the hydrogen storage component continues to discharge hydrogen, and the corresponding hydrogen pressure in the hydrogen storage component gradually decreases until the hydrogen in the hydrogen storage component is discharged to a safe range. In this way, the pressure in the hydrogen storage component is detected in real time, and the pressure of the hydrogen storage component is discharged as needed, without restricting the hydrogen discharge site.

[0025] In a possible implementation, the method further includes: when the hydrogen pressure at the outlet end of the decompression component does not meet the preset condition, adjusting the valve opening of the decompression component until the hydrogen pressure meets the preset condition.

[0026] Based on the above technical solution, the control system can reduce or increase the opening angle of the pressure reducing assembly valve when the hydrogen pressure at the outlet end of the pressure reducing assembly does not meet the preset conditions, without the need to manually control the opening angle of the valve until the hydrogen pressure meets the preset conditions.

[0027] In a possible implementation, the method further includes: opening the pressure relief valve when the hydrogen pressure at the outlet end of the pressure reducing assembly is greater than or equal to the starting pressure of the pressure relief valve; the gas flow of the pressure relief valve increases with increasing hydrogen pressure; and closing the pressure relief valve when the hydrogen pressure is less than the starting pressure of the pressure relief valve.

[0028] Among them, the maximum pressure of the pressure relief valve is determined based on the maximum hydrogen flow rate that can be diluted by the air provided by the air compressor assembly.

[0029] Based on the above technical solution, if the hydrogen pressure at the outlet of the pressure reducing assembly reaches the starting pressure of the pressure relief valve, the pressure relief valve automatically opens, and the hydrogen can flow through the pressure relief valve into the dilution tank to be mixed and diluted with the air. Similarly, when the hydrogen pressure at the outlet of the pressure reducing assembly does not reach the starting pressure of the pressure relief valve, the pressure relief valve is in a closed state.

[0030] In a possible implementation, the state parameter includes a hydrogen concentration, which is the hydrogen concentration at the outlet of the dilution tank. According to the hydrogen state parameter, the hydrogen pressure in the hydrogen storage member is adjusted so that the hydrogen pressure in the hydrogen storage member is discharged to the expected hydrogen pressure, including: when the hydrogen concentration is less than or equal to the target concentration, continuously discharging hydrogen so that the hydrogen pressure in the hydrogen storage member is discharged to the expected hydrogen pressure.

[0031] Based on the above technical solution, when the hydrogen concentration is less than or equal to the target concentration, it means that the hydrogen concentration in the dilution tank is within a safe range, the hydrogen storage component can continue to discharge hydrogen, and the corresponding hydrogen pressure in the hydrogen storage component will gradually decrease until the hydrogen pressure in the hydrogen storage component is discharged to the expected hydrogen pressure. In this way, the hydrogen concentration in the dilution tank can be detected in real time, and the pressure of the hydrogen storage component can be discharged as needed, avoiding the safety risks brought by the discharge of pure hydrogen, and there is no need to restrict the hydrogen discharge site.

[0032] In a possible implementation, the method further includes: when the hydrogen concentration is greater than the target concentration, reducing the valve opening of the pressure reducing assembly until the hydrogen concentration is less than the target concentration.

[0033] Based on the above technical solution, the control system can reduce the opening angle of the pressure reducing assembly valve when the hydrogen concentration is greater than the target concentration, without manually controlling the opening angle of the valve, until the hydrogen concentration is less than the target concentration.

[0034] In a possible embodiment, the method also includes: adjusting the speed of the air compressor assembly when the hydrogen concentration is less than the target concentration and / or the hydrogen pressure in the hydrogen storage component is equal to the hydrogen pressure at the outlet end of the pressure reducing component; the speed of the air compressor assembly after adjustment is less than the speed of the air compressor assembly before adjustment.

[0035] Based on the above technical solution, when the hydrogen concentration is lower than the target concentration and / or the hydrogen pressure in the hydrogen storage component is equal to the pressure at the outlet of the pressure reducing component, in order to save the energy consumption of the air compressor, the control system can reduce the speed of the air compressor assembly and reduce the air flow.

[0036] In a possible embodiment, the method also includes: when the hydrogen concentration is less than the target concentration and / or the hydrogen pressure in the hydrogen storage component is greater than the hydrogen pressure at the outlet end of the pressure reducing component, adjusting the speed of the air compressor assembly; the speed of the air compressor assembly after adjustment is greater than the speed of the air compressor assembly before adjustment.

[0037] Based on the above technical solution, when the hydrogen concentration is lower than the target concentration and / or the hydrogen pressure in the hydrogen storage component is higher than the hydrogen pressure at the outlet of the pressure reducing component, in order to improve the hydrogen discharge efficiency, the speed of the air compressor assembly can be increased and the air flow rate can be increased.

[0038] According to a third aspect of the present application, a vehicle is provided, the vehicle comprising an on-board hydrogen system as provided in any one of the first aspects above.

[0039] According to a fourth aspect of the present application, there is provided an electronic device, comprising: a processor; a memory for storing processor executable instructions; wherein the processor is configured to execute instructions to implement a method as provided in any one of the second aspects above.

[0040] According to the fifth aspect of the present application, a computer-readable storage medium is provided. When the computer execution instructions stored in the computer-readable storage medium are executed by a processor of an electronic device, the electronic device can execute a method as provided in any one of the second aspects above.

[0041] According to a sixth aspect of the present application, there is provided a computer program product, comprising a computer program or instructions, which, when executed by a processing device, implements a method as provided in any one of the second aspects above.

[0042] Beneficial effects of the present invention:

[0043] (1) The hydrogen part of the vehicle hydrogen system is divided into two pipelines, one of which is connected to the fuel cell stack and the other is connected to the exhaust component. The air part of the vehicle hydrogen system is also divided into two pipelines, which are the same as the hydrogen part. One pipeline is connected to the fuel cell stack and the other is connected to the exhaust component. When the hydrogen in the vehicle hydrogen system exceeds the safe hydrogen range, the hydrogen can be discharged as needed through the exhaust component, which can safely discharge the hydrogen while reducing the risk of the vehicle.

[0044] (2) The control system adjusts the hydrogen pressure inside the hydrogen storage component by obtaining the hydrogen state parameters discharged from the hydrogen storage component, so that the hydrogen pressure inside the hydrogen storage component is discharged to a safe hydrogen pressure, effectively and safely discharging the hydrogen from the vehicle, thereby reducing the potential hydrogen safety risks of fuel cell vehicles.

[0045] (3) When the hydrogen pressure at the outlet of the pressure reducing assembly is greater than the starting pressure of the pressure relief valve and less than or equal to the maximum pressure of the pressure relief valve, the hydrogen storage component continues to discharge hydrogen, and the hydrogen pressure in the corresponding hydrogen storage component gradually decreases until the hydrogen in the hydrogen storage component is discharged to a safe range. In this way, the pressure in the hydrogen storage component is detected in real time, and the pressure of the hydrogen storage component is discharged as needed, without restricting the hydrogen discharge site.

[0046] (4) When the hydrogen pressure at the outlet of the pressure reducing assembly does not meet the preset conditions, the control system can adjust the opening angle of the valve of the pressure reducing assembly without manually controlling the opening angle of the valve until the hydrogen pressure meets the preset conditions.

[0047] (5) If the hydrogen pressure reaches the starting pressure of the pressure relief valve, the pressure relief valve will automatically open, and the hydrogen can flow through the pressure relief valve into the dilution tank to mix and dilute with the air. Similarly, if the hydrogen pressure does not reach the starting pressure of the pressure relief valve, the pressure relief valve is in a closed state.

[0048] (6) When the hydrogen concentration is less than or equal to the target concentration, it means that the hydrogen concentration in the dilution tank is within a safe range, and the hydrogen storage device can continue to discharge hydrogen. The hydrogen pressure in the corresponding hydrogen storage device will gradually decrease until the hydrogen pressure in the hydrogen storage device is discharged to the expected hydrogen pressure. In this way, the hydrogen concentration in the dilution tank can be detected in real time, and the pressure of the hydrogen storage device can be discharged as needed, avoiding the safety risks caused by the discharge of pure hydrogen, and there is no need to restrict the discharge site of hydrogen.

[0049] (7) When the hydrogen concentration is greater than the target concentration, the control system can reduce the opening angle of the pressure reducing component valve without manually controlling the opening angle of the valve until the hydrogen concentration is less than the target concentration.

[0050] (8) When the hydrogen concentration is less than the target concentration, and / or the hydrogen pressure in the hydrogen storage element is equal to the hydrogen pressure at the outlet of the pressure reducing assembly, in order to save the energy consumption of the air compressor, the control system can reduce the speed of the air compressor assembly and reduce the air flow. Similarly, when the hydrogen concentration is greater than the target concentration, and / or the hydrogen pressure in the hydrogen storage element is greater than the target hydrogen pressure, in order to improve the hydrogen discharge efficiency, the speed of the air compressor assembly can be increased and the air flow can be increased.

[0051] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 Shown is a structural schematic diagram of a vehicle-mounted hydrogen system according to an exemplary embodiment;

[0053] Figure 2 The figure is a flow chart of a vehicle control method according to an exemplary embodiment;

[0054] Figure 3 Shown is a structural schematic diagram of a vehicle control device according to an exemplary embodiment;

[0055] Figure 4 Shown is a block diagram of an electronic device according to an exemplary embodiment.

[0056] Figure 1 Among them, 1 is a hydrogen storage component, 2 is a pressure reducing component, 21 is a multi-way assembly, 22 is a pressure reducing valve assembly, 23 is an ejector assembly, 3 is a fuel cell stack, 4 is an exhaust component, 41 is a dilution tank, 42 ​​is a pressure relief valve, 5 is an air component, 51 is an air compressor assembly, 52 is an air filter assembly, 53 is a flow meter, 54 is an intercooler, 55 is an air bypass valve, 56 is an air shut-off valve, 6 is a control system, 61 is a concentration sensor, 62 is a controller, 63 is a first pressure sensor, 64 is a second pressure sensor, and 7 is a hydrogen shut-off valve. DETAILED DESCRIPTION

[0057] In order to enable ordinary persons in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0058] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0059] In related technologies, hydrogen storage for hydrogen fuel cell vehicles is generally in the form of high-pressure gaseous hydrogen, which is stored in high-pressure gas cylinders. If you want to discharge the hydrogen in the car to a safe range, you need to use special hydrogen discharge equipment or place the car in a designated place for discharge. However, since the outlet during the discharge process is pure hydrogen, there is a certain safety risk.

[0060] In current fuel cell vehicles, in order to ensure safe operation, it is often necessary to adjust the pressure in the onboard hydrogen cylinder to a safe level. The traditional approach is to install a hydrogen discharge valve on the hydrogen transmission pipeline to achieve pressure reduction. However, this method has significant shortcomings: first, the discharged hydrogen pressure is high, which may cause safety hazards; second, the direct discharge of pure hydrogen places strict requirements on environmental conditions, and usually needs to be operated in an open area or equipped with a special hydrogen discharge safety device; third, the operation process relies on manual control of the valve opening and lacks automatic adjustment capabilities, which increases the complexity of the operation and makes it difficult to ensure precise control; finally, the discharge hydrogen pressure cannot be adjusted online in real time, which limits the flexibility and adaptability of the system.

[0061] The existing patent, patent application number "CN202110180640.5", patent name "A fuel cell system integrated with hydrogen purge device and tail exhaust dilution function air subsystem and its control method", the technical solution proposed in the patent is mainly through the integrated air three-way valve. When in use, the air is purified by the air filter, pressurized by the air compressor and cooled by the intercooler, and then flows through the air three-way valve for diversion, thereby realizing the shell ventilation function and tail exhaust hydrogen dilution function. The disadvantage of the above technical solution is that the hydrogen remaining in the packaging box after the normal reaction with the fuel cell stack (3) is diluted, and the hydrogen in the hydrogen tank cannot be directly discharged and diluted.

[0062] The existing patent, patent application number "CN201911029967.1", patent name "Fuel Cell Vehicle Tail Exhaust Hydrogen Concentration Calculation Method, Exhaust Control System (6) and Its Use Method, Storage Medium", can calculate the hydrogen concentration of fuel cell vehicle tail exhaust, thereby providing data for the fuel cell exhaust control system (6), so that the fuel cell exhaust control system (6) can control the hydrogen concentration in the mixed gas discharged from the exhaust pipe. The disadvantage of the above technical solution is that it can only dilute the residual hydrogen that has not reacted in the stack during the operation of the vehicle. If this method is used to discharge the hydrogen in the hydrogen storage bottle, a large amount of hydrogen will pass through the stack alone, and the stack will be damaged accordingly.

[0063] In order to solve the above problems, the present application provides a vehicle control method, in which the control system adjusts the hydrogen pressure inside the hydrogen storage component by obtaining the state parameters of the hydrogen discharged from the hydrogen storage component, so that the hydrogen pressure inside the hydrogen storage component is discharged to a safe hydrogen pressure, thereby effectively and safely discharging the hydrogen of the vehicle and reducing the potential hydrogen safety risks of fuel cell vehicles.

[0064] For ease of understanding, the vehicle control method provided in the present application is specifically introduced below with reference to the accompanying drawings.

[0065] Figure 1 It is a schematic diagram of a vehicle-mounted hydrogen system according to an exemplary embodiment. The vehicle-mounted hydrogen system includes: a hydrogen storage component 1, a pressure reducing component 2, a fuel cell stack 3, an exhaust component 4 and an air component 5.

[0066] The decompression assembly 2 has an air inlet and an air outlet, wherein the air inlet is connected to the hydrogen storage element 1 and the air outlet is connected to the fuel cell stack 3. The decompression assembly 2 can be used to adjust the pressure of hydrogen discharged from the hydrogen storage element 1.

[0067] It is worth noting that the air outlet end of the decompression component 2 is also connected to the exhaust component 4.

[0068] It is understandable that the hydrogen pressure in the hydrogen storage component 1 has reached a specified pressure, and the hydrogen in the hydrogen storage component 1 needs to be discharged to reduce the hydrogen pressure to a preset pressure, so as to ensure the safety of the fuel cell vehicle.

[0069] In a possible example, the hydrogen storage component 1 discharges hydrogen to the air inlet end of the pressure reducing component 2. The pressure reducing component 2 can reduce the pressure of the hydrogen discharged from the hydrogen storage component 1 and transport the reduced pressure hydrogen to the fuel cell stack 3 or the exhaust component 4.

[0070] The air component 5 is connected to the fuel cell stack 3 and to the exhaust component 4 .

[0071] In a possible example, the air component 5 can not only output air to the fuel cell stack 3 , but also output air to the exhaust component.

[0072] Optionally, the fuel cell stack 3 can convert the hydrogen output by the decompression component 2 and the air output by the air component 5 into electrical energy and water through chemical reactions for use by the vehicle.

[0073] The exhaust component 4 can reduce the concentration of hydrogen output by the pressure reducing component 2 through the air output by the air component 5, and arrange the discharge of the hydrogen to reduce the hydrogen pressure to a preset pressure, thereby ensuring the safety of the fuel cell vehicle.

[0074] Optionally, the pressure reducing assembly 2 includes but is not limited to a multi-way assembly 21, a pressure reducing valve assembly 22 and an ejector assembly 23 which are arranged in sequence.

[0075] In a possible example, the hydrogen storage component 1 can be a plurality of hydrogen storage bottles, and the plurality of hydrogen storage bottles can be joined together by a multi-way assembly 21. The joined hydrogen can be depressurized for the first time by a pressure reducing valve assembly 22, and the depressurized hydrogen enters an ejector assembly 23, and the hydrogen is depressurized for the second time. The hydrogen after the second depressurization is transported to the fuel cell stack 3.

[0076] In some embodiments, the exhaust assembly 4 includes: a dilution tank 41 and a pressure relief valve 42 , one end of the pressure relief valve 42 is connected to the gas outlet, and the other end of the pressure relief valve 42 is connected to the dilution tank 41 .

[0077] In a possible example, when the hydrogen pressure at the outlet of the pressure reducing assembly 2 is greater than the starting value of the pressure relief valve 42 , the pressure relief valve 42 can be opened under the action of the gas pressure, that is, the hydrogen can enter the dilution tank 41 through the pressure relief valve 42 .

[0078] The dilution tank 41 is used to mix the hydrogen with the air output by the air component, that is, the hydrogen can be diluted by the air so that the hydrogen reaches a safe pressure or a safe concentration.

[0079] Alternatively, the pressure relief valve 42 may be replaced with a bypass valve.

[0080] In some embodiments, the vehicle-mounted hydrogen system further includes: a control system 6 , which is electrically connected to the pressure reducing assembly 2 .

[0081] In a possible example, the control system 6 may be electrically connected to the ejector assembly 23 to control the proportional valve of the ejector assembly 23 to decompress the hydrogen for a second time.

[0082] The control system 6 is used to detect the state parameters of the hydrogen after being discharged from the hydrogen storage component 1 , and control the pressure reducing component 2 to adjust the pressure of the hydrogen discharged from the hydrogen storage component 1 according to the state parameters.

[0083] In a possible example, the control system 6 can detect the hydrogen pressure or hydrogen concentration after being discharged from the hydrogen storage component 1, and control the opening angle of the valve of the pressure reducing assembly 2 according to the hydrogen pressure or hydrogen concentration, so as to adjust the hydrogen pressure or hydrogen concentration after being discharged from the hydrogen storage component 1.

[0084] In some embodiments, the control system 6 includes: a concentration sensor 61 and a controller 62. The concentration sensor 61 is used to detect the hydrogen concentration at the outlet of the dilution tank 41.

[0085] The controller 62 is electrically connected to the concentration sensor 61 ; the controller 62 is used to obtain the data detected by the concentration sensor 61 , and control the pressure reducing assembly 2 according to the data detected by the concentration sensor 61 .

[0086] It can be understood that the hydrogen concentration at the outlet of the dilution tank 41 is the hydrogen concentration after being discharged from the hydrogen storage element 1 .

[0087] In a possible example, the controller 62 can control the opening angle of the valve of the decompression component 2 according to the hydrogen concentration at the outlet of the dilution tank 41 detected by the concentration sensor 61. For example, when the hydrogen concentration is greater than the safe concentration, the controller can reduce the opening angle of the valve of the decompression component 2 to control the hydrogen flow rate, thereby achieving the purpose of reducing the hydrogen concentration at the outlet of the dilution tank 41.

[0088] Optionally, the controller may be a fuel cell control unit (FCU), which is responsible for receiving control instructions for the entire vehicle and coordinating the work of other controllers and actuators in the fuel cell system.

[0089] In some embodiments, the control system 6 further includes: a first pressure sensor 63, which is disposed at the gas outlet of the decompression assembly 2; the first pressure sensor 63 is used to detect the hydrogen pressure at the gas outlet.

[0090] The controller 62 is also electrically connected to the first pressure sensor 63 , and is also used to obtain data detected by the first pressure sensor 63 , and control the decompression assembly 2 according to the data detected by the first pressure sensor 63 .

[0091] In a possible example, the controller 62 may control the opening angle of the valve of the decompression component 2 according to the hydrogen pressure at the gas outlet detected by the first pressure sensor 63. For example, when the hydrogen pressure at the gas outlet is greater than the safety pressure, the controller may reduce the opening angle of the valve of the decompression component 2 to control the hydrogen flow rate and achieve the purpose of reducing the hydrogen pressure at the gas outlet.

[0092] In another possible example, one end of the first pressure sensor 63 is electrically connected to the ejector assembly 23 , and the other end of the first pressure sensor 63 is connected in parallel to the pressure relief valve 42 and the hydrogen shut-off valve 7 . The hydrogen shut-off valve 7 is in communication with the fuel cell stack 3 .

[0093] Exemplarily, the first pressure sensor 63 can detect the hydrogen pressure at the outlet of the ejector assembly 23. Then, the controller 62 controls the opening angle of the valve of the ejector assembly 23 according to the obtained hydrogen pressure at the outlet of the ejector assembly 23.

[0094] Optionally, the control system 6 may further include: a second pressure sensor 64 , the second pressure sensor 64 is electrically connected to the multi-way assembly 21 , and the second pressure sensor 64 is used to detect the hydrogen pressure in the hydrogen storage component 1 .

[0095] In some embodiments, the air component 5 includes an air compressor assembly 51 . The air compressor assembly 51 is in communication with the fuel cell stack 3 and the dilution tank 41 .

[0096] The control system 6 is electrically connected to the air compressor assembly 51 ; the control system 6 is also used to control the rotation speed of the air compressor assembly 51 .

[0097] It is understandable that the hydrogen discharged from the hydrogen storage element 1 can be diluted by air to reach a safe concentration or a safe pressure.

[0098] In a possible example, the control system 6 may control the air compressor assembly 51 to open to the maximum pumping capacity to obtain the maximum hydrogen flow rate that can be diluted.

[0099] In another possible example, when the hydrogen discharged from the hydrogen storage element 1 gradually decreases to a safe concentration or a safe pressure, in order to save energy consumption of the air compressor assembly, the control system 6 can control the speed of the air compressor assembly 51 to be reduced.

[0100] Optionally, the air assembly 5 further includes an air filter assembly 52, a flow meter 53, an intercooler 54, an air bypass valve 55, and an air shut-off valve 56. One end of the flow meter 53 is connected to the air compressor assembly 51, and the other end of the flow meter 53 is connected to the air filter assembly 52.

[0101] A first port of the intercooler 54 is in communication with the air compressor assembly, and a second port of the intercooler 54 is in communication with an air bypass valve 55 . The air bypass valve 55 is also in communication with the dilution tank 41 .

[0102] The third port of the intercooler 54 is in communication with the air shutoff valve 56 , and the air shutoff valve 56 is also in communication with the fuel cell stack 3 .

[0103] In another possible example, the control system 6 can control the working state of the air compressor assembly 51. When the air compressor assembly 51 is turned on, air can enter through the air filter assembly 52 due to the pumping action of the air compressor assembly 51, flow through the flow meter 53 to reach the air compressor assembly 51, and then flow through the intercooler 54 to enter the fuel cell stack 3 through the air shut-off valve 56.

[0104] It is understandable that air can also enter the dilution tank 41 through the air bypass valve 55 to be mixed and diluted with the hydrogen.

[0105] The following is an overview of the usage process of the on-board hydrogen system provided by this application.

[0106] The control system 6 can receive the hydrogen discharge instruction from the vehicle controller and control the hydrogen storage component 1 to open the valve. The hydrogen pressure in the hydrogen storage component 1 is discharged to the outside of the hydrogen storage component 1, and the first pressure reduction is performed through the pressure reducing valve assembly 22. The decompressed gas enters the ejector assembly 23. The control system 6 can decompress the hydrogen for the second time by controlling the proportional valve of the ejector assembly 23. The hydrogen after the second decompression can enter the fuel cell stack 3 through the hydrogen shut-off valve 7.

[0107] However, during the hydrogen discharge process, the control system 6 can close the air shutoff valve 56 and the hydrogen shutoff valve 7 to prevent hydrogen from entering the fuel cell stack 3 and causing damage to the stack. The control system 6 can also open the air bypass valve 55 and control the speed of the air compressor assembly 51 at the same time, so that the speed of the air compressor assembly 51 runs within a specified range, and then air enters the dilution tank 41.

[0108] When the hydrogen pressure at the outlet of the pressure reducing assembly is greater than or equal to the start-up pressure of the pressure relief valve 42 , the hydrogen can pass through the pressure relief valve 42 into the dilution tank 41 to be mixed and diluted with the air.

[0109] Figure 2 is a flow chart of a vehicle control method according to an exemplary embodiment. Figure 2 As shown, the vehicle control method is applied to Figure 1 The vehicle-mounted hydrogen system provided, the vehicle control method comprises the following steps:

[0110] S201, obtaining hydrogen state parameters after the hydrogen storage component is discharged.

[0111] In the embodiment of the present application, the hydrogen state parameter includes hydrogen pressure and / or hydrogen concentration.

[0112] The hydrogen pressure is the hydrogen pressure at the outlet of the pressure reducing component.

[0113] It should be noted that the hydrogen concentration is the hydrogen concentration at the outlet of the dilution tank, or the hydrogen concentration is the hydrogen concentration in the exhaust pipe between the dilution tank and the concentration sensor.

[0114] Optionally, the control system may obtain the hydrogen pressure in the hydrogen storage member detected by the second pressure sensor through the wiring harness. For example, the hydrogen pressure in the hydrogen storage member is recorded as P1.

[0115] For example, the control system can obtain the hydrogen pressure detected by the first pressure sensor through the wiring harness, and can also obtain the hydrogen concentration detected by the concentration sensor through the wiring harness. For example, the hydrogen pressure at the outlet of the decompression component is recorded as P2, and the hydrogen concentration is recorded as C1.

[0116] S202. According to the hydrogen state parameter, the hydrogen pressure in the hydrogen storage component is adjusted so that the hydrogen pressure in the hydrogen storage component is discharged to the expected hydrogen pressure.

[0117] As a possible implementation of the above S202, when the hydrogen pressure at the outlet of the pressure reducing assembly meets a preset condition, hydrogen is continuously discharged until the hydrogen pressure in the hydrogen storage component is discharged to the expected hydrogen pressure.

[0118] In some embodiments, the preset condition is that the hydrogen pressure at the outlet of the pressure reducing assembly is greater than the starting pressure of the pressure relief valve and is less than or equal to the maximum pressure of the pressure relief valve.

[0119] Wherein, when the hydrogen pressure at the outlet end of the decompression assembly is equal to the maximum pressure of the pressure relief valve, the hydrogen pressure at the outlet end of the decompression assembly is less than or equal to the hydrogen pressure in the hydrogen storage component.

[0120] It should be noted that the maximum pressure of the pressure relief valve is the maximum pressure allowed by the inlet of the pressure relief valve, which is determined by the maximum hydrogen flow rate that can be diluted by the air component. 2max .

[0121] It is understandable that during the hydrogen discharge process, the hydrogen pressure at the outlet of the pressure reducing assembly needs to be adjusted to ensure that the hydrogen pressure in the diluted mixed gas is within a safe range.

[0122] For example, at the maximum pressure P of the pressure relief valve 2max ≥Hydrogen pressure P2>Starting pressure of pressure relief valve P 启动 In the case of , it means that the hydrogen pressure is within the safe range, and hydrogen is continuously discharged until the hydrogen pressure in the hydrogen storage device P1 = P 预计 The control system can close the valve of the pressure reducing component (the valve of the ejector assembly), the air compressor assembly, the air bypass valve, and the valve of the hydrogen storage component, and the hydrogen discharge is completed.

[0123] It is worth noting that in the above case, if the hydrogen pressure P2 = the maximum pressure P of the pressure relief valve 2max , then the hydrogen pressure P2 ≤ the hydrogen pressure P1 in the hydrogen storage component.

[0124] Correspondingly, when the hydrogen pressure at the outlet of the decompression assembly does not meet the preset conditions, the valve opening of the decompression assembly is adjusted until the hydrogen pressure at the outlet of the decompression assembly meets the preset conditions.

[0125] For example, when the hydrogen pressure at the outlet of the decompression assembly does not meet the above preset conditions, the control system can adjust the valve opening of the decompression assembly through the wiring harness. For example, the control system reduces the opening angle of the valve of the decompression assembly to control the hydrogen flow rate until the hydrogen pressure at the outlet of the decompression assembly meets the preset conditions.

[0126] In some embodiments, when the hydrogen pressure at the outlet of the decompression assembly is greater than or equal to the start-up pressure of the pressure relief valve, the pressure relief valve is opened. Correspondingly, when the hydrogen pressure at the outlet of the decompression assembly is less than the start-up pressure of the pressure relief valve, the pressure relief valve is closed.

[0127] The gas flow rate of the pressure relief valve increases with the increase of hydrogen pressure, that is, the greater the hydrogen pressure at the outlet of the pressure reducing component, the higher the hydrogen flow rate through the pressure relief valve.

[0128] For example, the hydrogen pressure at the outlet of the decompression component can enter the fuel cell stack through the hydrogen shut-off valve. At the same time, when the hydrogen pressure is greater than or equal to the starting pressure of the pressure relief valve, the pressure relief valve automatically opens, and the hydrogen can also enter the dilution tank through the pressure relief valve. Correspondingly, if the hydrogen pressure at the outlet of the decompression component is less than the starting pressure of the pressure relief valve, it means that the vehicle does not need to release pressure, and the pressure relief valve automatically closes.

[0129] As another possible implementation of the above S202, when the hydrogen concentration is less than or equal to the target concentration, hydrogen is continuously discharged so that the hydrogen pressure in the hydrogen storage member is discharged to the expected hydrogen pressure.

[0130] Among them, the target concentration can be understood as the safe concentration.

[0131] It is understandable that during the hydrogen discharge process, the hydrogen concentration needs to be adjusted to ensure that the hydrogen concentration in the diluted mixed gas is within a safe range.

[0132] For example, when the hydrogen concentration C1≤C 目标 In the case of , it means that the hydrogen concentration is within the safe concentration, and hydrogen is continuously discharged until the hydrogen pressure in the hydrogen storage device P1 = P 预计The control system can close the valve of the pressure reducing component (the valve of the ejector assembly), the air compressor assembly, the air bypass valve, and the valve of the hydrogen storage component, and the hydrogen discharge is completed.

[0133] In some embodiments, when the hydrogen concentration is greater than the target concentration, the valve opening of the pressure reducing assembly is reduced until the hydrogen concentration is less than the target concentration.

[0134] For example, when the hydrogen concentration is greater than the target concentration, it means that the hydrogen concentration has reached a safe concentration, and the control system can adjust the valve opening of the decompression component through the wiring harness. For example, the control system reduces the opening angle of the valve of the decompression component to control the hydrogen flow rate until the hydrogen concentration is less than the target concentration.

[0135] In the embodiment of the present application, the target hydrogen pressure includes the maximum pressure of the pressure relief valve and the hydrogen pressure.

[0136] In some embodiments, when the hydrogen concentration is less than the target concentration and / or the hydrogen pressure in the hydrogen storage component is equal to the hydrogen pressure at the outlet end of the pressure reducing component, the speed of the air compressor assembly is adjusted; the speed of the air compressor assembly after adjustment is less than the speed of the air compressor assembly before adjustment.

[0137] For example, when the hydrogen concentration C1 is less than the target concentration C 目标 , and / or, the hydrogen pressure P1 in the hydrogen storage element = the maximum pressure P of the pressure relief valve 2max In order to save the energy consumption of the air compressor, the speed n of the air compressor can be reduced.

[0138] Alternatively, when the hydrogen concentration C1 is less than the target concentration C 目标 , and / or, when the hydrogen pressure P1 in the hydrogen storage component = the hydrogen pressure P2 at the outlet end of the pressure reducing assembly, in order to save energy consumption of the air compressor, the speed n of the air compressor assembly can be reduced.

[0139] In some embodiments, when the hydrogen concentration is greater than the target concentration and / or the hydrogen pressure in the hydrogen storage component is greater than the hydrogen pressure at the outlet end of the pressure reducing component, the speed of the air compressor assembly is adjusted; the speed of the air compressor assembly after adjustment is greater than the speed of the air compressor assembly before adjustment.

[0140] It should be noted that due to the maximum pressure P of the pressure relief valve 2max It is determined based on the maximum hydrogen flow rate that can be diluted by the air provided by the air compressor assembly, which means that the air compressor assembly has been opened to the maximum pumping capacity (maximum speed). Therefore, if the target hydrogen pressure is the maximum pressure P of the pressure relief valve 2max , there is no need to adjust the speed of the air compressor assembly.

[0141] For example, when the hydrogen concentration C1> target concentration C 目标, and / or, when the hydrogen pressure P1 in the hydrogen storage component is greater than the hydrogen pressure P2 at the outlet of the pressure reducing component, in order to improve the hydrogen discharge efficiency, the speed of the air compressor assembly can be increased to increase the air flow rate.

[0142] Based on the above technical solution, the control system adjusts the hydrogen pressure inside the hydrogen storage component by obtaining the hydrogen state parameters discharged from the hydrogen storage component, so that the hydrogen pressure inside the hydrogen storage component is discharged to a safe hydrogen pressure, effectively and safely discharging the vehicle's hydrogen, reducing the potential hydrogen safety risks of fuel cell vehicles.

[0143] The above mainly introduces the solution provided by the embodiment of the present application from the perspective of the method. In order to achieve the above functions, the on-board hydrogen system or electronic device includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0144] The embodiment of the present application can divide the functional modules of the vehicle-mounted hydrogen system or electronic device according to the above method. For example, the vehicle-mounted hydrogen system or electronic device may include various functional modules corresponding to the various functional divisions, or two or more functions may be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. There may be other division methods in actual implementation.

[0145] Figure 3 The vehicle control device 300 is a schematic diagram of a structure of a vehicle control device according to an exemplary embodiment. The vehicle control device 300 is applied to a vehicle-mounted hydrogen system, and the vehicle-mounted hydrogen system is used to adjust the hydrogen pressure in the hydrogen storage component.

[0146] The vehicle control device includes: a processing unit 301 and an acquisition unit 302; the acquisition unit 302 is used to obtain the hydrogen state parameters after the hydrogen storage component is discharged; the processing unit 301 is used to adjust the hydrogen pressure in the hydrogen storage component according to the hydrogen state parameters so that the hydrogen pressure in the hydrogen storage component is discharged to the expected hydrogen pressure.

[0147] In a possible embodiment, the hydrogen state parameter includes the hydrogen pressure at the outlet end of the decompression component; the processing unit 301 is specifically used to continuously discharge hydrogen when the hydrogen pressure at the outlet end of the decompression component meets a preset condition until the hydrogen pressure in the hydrogen storage component is discharged to the expected hydrogen pressure.

[0148] Among them, the preset condition is that the hydrogen pressure at the outlet end of the pressure reducing assembly is greater than the starting pressure of the pressure relief valve and less than or equal to the maximum pressure of the pressure relief valve; when the hydrogen pressure at the outlet end of the pressure reducing assembly is equal to the maximum pressure of the pressure relief valve, the hydrogen pressure at the outlet end of the pressure reducing assembly is less than or equal to the hydrogen pressure in the hydrogen storage component.

[0149] In a possible implementation, the processing unit 301 is also used to adjust the valve opening of the decompression component when the hydrogen pressure at the outlet end of the decompression component does not meet the preset conditions until the hydrogen pressure at the outlet end of the decompression component meets the preset conditions.

[0150] In a possible implementation, the processing unit 301 is also used to open the pressure relief valve when the hydrogen pressure at the outlet of the pressure reducing assembly is greater than or equal to the starting pressure of the pressure relief valve; the gas flow of the pressure relief valve increases with the increase of the hydrogen pressure at the outlet; and the pressure relief valve is closed when the hydrogen pressure is less than the starting pressure of the pressure relief valve.

[0151] In a possible embodiment, the hydrogen state parameters include hydrogen concentration, which is the hydrogen concentration at the outlet end of the dilution tank; the processing unit 301 is specifically used to continuously discharge hydrogen when the hydrogen concentration is less than or equal to the target concentration, so that the hydrogen pressure in the hydrogen storage component is discharged to the expected hydrogen pressure.

[0152] In a possible implementation, the processing unit 301 is further configured to reduce the valve opening of the pressure reducing assembly when the hydrogen concentration is greater than the target concentration, until the hydrogen concentration is less than the target concentration.

[0153] In a possible embodiment, the processing unit 301 is also used to adjust the speed of the air compressor assembly when the hydrogen concentration is lower than the target concentration and / or the hydrogen pressure in the hydrogen storage component is equal to the hydrogen pressure at the outlet end of the pressure reducing component; the speed of the air compressor assembly after adjustment is lower than the speed of the air compressor assembly before adjustment.

[0154] In a possible embodiment, the processing unit 301 is also used to adjust the speed of the air compressor assembly when the hydrogen concentration is greater than the target concentration and / or the hydrogen pressure in the hydrogen storage component is greater than the hydrogen pressure at the outlet end of the pressure reducing component; the speed of the air compressor assembly after adjustment is greater than the speed of the air compressor assembly before adjustment.

[0155] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0156] Figure 4 FIG. 1 is a block diagram of an electronic device according to an exemplary embodiment. Figure 4 As shown, the electronic device 400 includes but is not limited to: a processor 401 and a memory 402 .

[0157] The memory 402 is used to store executable instructions of the processor 401. It can be understood that the processor 401 is configured to execute instructions to implement the battery charge control method in the above embodiment.

[0158] It should be noted that those skilled in the art can understand that Figure 4 The electronic device structure shown in the figure does not constitute a limitation on the electronic device, and the electronic device may include Figure 4 More or fewer components may be shown, or certain components may be combined, or the components may be arranged differently.

[0159] The processor 401 is the control center of the electronic device. It uses various interfaces and lines to connect various parts of the entire electronic device. By running or executing software programs and / or modules stored in the memory 402, and calling data stored in the memory 402, it performs various functions of the electronic device and processes data, thereby monitoring the electronic device as a whole. The processor 401 may include one or more processing units. Optionally, the processor 401 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, and the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 401.

[0160] The memory 402 may be used to store software programs and various data. The memory 402 may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application program required by at least one functional module (such as a determination unit, a processing unit, etc.), etc. In addition, the memory 402 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0161] In an exemplary embodiment, a computer-readable storage medium including instructions is also provided, such as a memory 402 including instructions, and the above instructions can be executed by the processor 401 of the electronic device 400 to implement the method in the above embodiment.

[0162] In actual implementation, Figure 3The functions of the acquisition unit 302 and the processing unit 301 in Figure 4 The processor 401 in the embodiment calls the computer program stored in the memory 402. The specific execution process can refer to the description of the method part in the above embodiment, which will not be repeated here.

[0163] Optionally, the computer-readable storage medium may be a non-temporary computer-readable storage medium, for example, the non-temporary computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0164] In an exemplary embodiment, the present application also provides a computer program product including one or more instructions, and the one or more instructions can be executed by the processor 401 of the electronic device to complete the method in the above embodiment.

[0165] It should be noted that when the instructions in the above-mentioned computer-readable storage medium or one or more instructions in the computer program product are executed by the processor of the electronic device, the various processes of the above-mentioned method embodiment are implemented, and the same technical effect as the above-mentioned method can be achieved. To avoid repetition, they will not be repeated here.

[0166] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0167] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic, for example, the division of modules or units is only a logical function division, and there may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0168] The units described as separate components may or may not be physically separated, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0169] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0170] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or the full classification part or part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium, including a number of instructions to enable a device (which can be a single-chip microcomputer, chip, etc.) or a processor (processor) to execute the full classification part or part of the steps of each embodiment method of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, ROM, RAM, disk or CD and other media that can store program code.

[0171] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A vehicle-mounted hydrogen system, characterized in that: The vehicle-mounted hydrogen system comprises: Hydrogen storage element (1); A decompression component (2), the decompression component (2) having an air inlet end and an air outlet end; the air inlet end is in communication with the hydrogen storage component (1); the decompression component (2) is used to adjust the pressure of hydrogen discharged from the hydrogen storage component (1); A fuel cell stack (3), the fuel cell stack (3) being in communication with the gas outlet; An exhaust component (4) communicated with the exhaust end; An air component (5), wherein the air component (5) is in communication with the fuel cell stack (3) and with the exhaust component (4).

2. The vehicle-mounted hydrogen system according to claim 1, characterized in that: The exhaust assembly (4) comprises: Dilution tank (41); A pressure relief valve (42), one end of the pressure relief valve (42) is communicated with the gas outlet end, and the other end of the pressure relief valve (42) is communicated with the dilution tank (41).

3. The vehicle-mounted hydrogen system according to claim 2, characterized in that: The vehicle-mounted hydrogen system further comprises: A control system (6), the control system (6) being electrically connected to the pressure reducing assembly (2); the control system (6) being used to detect state parameters of hydrogen after being discharged from the hydrogen storage component (1), and to control the pressure reducing assembly (2) to adjust the state parameters of hydrogen after being discharged from the hydrogen storage component (1) according to the hydrogen state parameters.

4. The vehicle-mounted hydrogen system according to claim 3, characterized in that: The control system (6) comprises: A concentration sensor (61), the concentration sensor (61) being used to detect the hydrogen concentration at the gas outlet of the dilution tank (41); A controller (62), the controller (62) being electrically connected to the concentration sensor (61); the controller (62) being used to obtain data detected by the concentration sensor (61) and to control the pressure reducing component (2) according to the data detected by the concentration sensor (61).

5. The vehicle-mounted hydrogen system according to claim 4, characterized in that: The control system (6) further comprises: A first pressure sensor (63), the first pressure sensor (63) being arranged at the gas outlet end of the decompression assembly (2); the first pressure sensor (63) being used to detect the hydrogen pressure at the gas outlet end; The controller (62) is also electrically connected to the first pressure sensor (63), and is also used to obtain data detected by the first pressure sensor (63), and to control the pressure reducing assembly (2) according to the data detected by the first pressure sensor (63).

6. The vehicle-mounted hydrogen system according to any one of claims 3 to 5, characterized in that: The air component (5) comprises: An air compressor assembly (51), the air compressor assembly (51) being in communication with the fuel cell stack (3) and the dilution tank (41); The control system (6) is electrically connected to the air compressor assembly (51); the control system (6) is also used to control the rotation speed of the air compressor assembly (51).

7. A vehicle control method, characterized in that: Applicable to the vehicle-mounted hydrogen system according to any one of claims 1 to 6, the vehicle-mounted hydrogen system is used to adjust the hydrogen pressure in the hydrogen storage component; the method comprises: Obtaining hydrogen state parameters after the hydrogen storage component is discharged; According to the hydrogen state parameter, the hydrogen pressure in the hydrogen storage member is adjusted so that the hydrogen pressure in the hydrogen storage member is discharged to the expected hydrogen pressure.

8. The method according to claim 7, characterized in that The hydrogen state parameter includes the hydrogen pressure at the outlet end of the decompression component; The step of adjusting the hydrogen pressure in the hydrogen storage member according to the hydrogen state parameter so that the hydrogen pressure in the hydrogen storage member is discharged to the expected hydrogen pressure includes: When the hydrogen pressure at the outlet of the decompression component meets a preset condition, hydrogen is continuously discharged until the hydrogen pressure in the hydrogen storage component is discharged to the expected hydrogen pressure; the preset condition is that the hydrogen pressure at the outlet of the decompression component is greater than the start pressure of the pressure relief valve and less than or equal to the maximum pressure of the pressure relief valve; Wherein, when the hydrogen pressure at the outlet end of the decompression component is equal to the maximum pressure of the pressure relief valve, the hydrogen pressure at the outlet end of the decompression component is less than or equal to the hydrogen pressure in the hydrogen storage component.

9. The method according to claim 8, characterized in that The method further comprises: When the hydrogen pressure at the outlet end of the decompression component does not meet the preset condition, the valve opening of the decompression component is adjusted until the hydrogen pressure at the outlet end of the decompression component meets the preset condition.

10. The method according to claim 8 or 9, characterized in that: The method further comprises: When the hydrogen pressure at the outlet of the pressure reducing assembly is greater than or equal to the starting pressure of the pressure relief valve, the pressure relief valve is opened; the gas flow of the pressure relief valve increases with the increase of the hydrogen pressure; When the hydrogen pressure at the outlet end of the pressure reducing assembly is less than the starting pressure of the pressure relief valve, the pressure relief valve is closed.

11. The method according to claim 7, characterized in that The hydrogen state parameter includes hydrogen concentration, which is the hydrogen concentration at the gas outlet of the dilution tank; The step of adjusting the hydrogen pressure in the hydrogen storage member according to the hydrogen state parameter so that the hydrogen pressure in the hydrogen storage member is discharged to the expected hydrogen pressure includes: When the hydrogen concentration is less than or equal to the target concentration, hydrogen is continuously discharged so that the hydrogen pressure in the hydrogen storage member is discharged to the expected hydrogen pressure.

12. The method according to claim 11, characterized in that The method further comprises: When the hydrogen concentration is greater than the target concentration, the valve opening of the pressure reducing component is reduced until the hydrogen concentration is less than the target concentration.

13. The method according to claim 7, characterized in that The method further comprises: When the hydrogen concentration is lower than the target concentration and / or the hydrogen pressure in the hydrogen storage component is equal to the hydrogen pressure at the outlet of the pressure reducing component, the speed of the air compressor assembly is adjusted; the speed of the air compressor assembly after adjustment is lower than the speed of the air compressor assembly before adjustment.

14. The method according to claim 7, characterized in that The method further comprises: When the hydrogen concentration is greater than the target concentration and / or the hydrogen pressure in the hydrogen storage component is greater than the hydrogen pressure at the outlet end of the pressure reducing component, the speed of the air compressor assembly is adjusted; the speed of the air compressor assembly after adjustment is greater than the speed of the air compressor assembly before adjustment.

15. A vehicle, characterized in that: The vehicle comprises the on-vehicle hydrogen system according to any one of claims 1 to 6.

16. A vehicle control device, characterized in that: Applicable to the vehicle-mounted hydrogen system according to any one of claims 1 to 6, wherein the vehicle-mounted hydrogen system is used to adjust the hydrogen pressure in the hydrogen storage component; The device comprises: a processing unit and an acquisition unit; The acquisition unit is used to acquire the hydrogen state parameters after the hydrogen storage element is discharged; The processing unit is used to adjust the hydrogen pressure in the hydrogen storage component according to the hydrogen state parameter, so that the hydrogen pressure in the hydrogen storage component is discharged to the expected hydrogen pressure.

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