A hydrogen supply control device and method for a fuel cell system and a hydrogen-powered vehicle

Abstract

A fuel cell hydrogen supply system control device, method and hydrogen-powered vehicle, relating to the technical field of hydrogen-powered vehicles, including: a hydrogen cylinder group, a plurality of hydrogen cylinder valves, a pressure reducing device, a hydrogen leakage sensor and a hydrogen supply controller, the hydrogen supply controller being electrically connected to the temperature sensor and the pressure sensor of the hydrogen cylinder valve, respectively, the hydrogen leakage sensor being electrically connected to the hydrogen supply controller, the temperature sensor and the pressure sensor being used to collect the temperature and pressure information of the corresponding hydrogen cylinder valve, respectively, the hydrogen leakage sensor being used to collect hydrogen concentration information, the hydrogen supply controller being connected to the fuel cell controller FCU via signals. The present invention also provides a hydrogen supply control method for a fuel cell system, which can realize precise control of a hydrogen supply control device according to monitoring information, thereby ensuring that the entire vehicle-mounted hydrogen supply system is in a safe, reliable and stable operating state.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen-powered vehicles, and in particular to a hydrogen supply control device and method for a fuel cell system and a hydrogen-powered vehicle. Background Art

[0002] Fuel cells are an efficient and clean electrochemical power generation technology. In recent years, they have become the most likely advanced new energy vehicle technology to replace traditional engine technology. This new energy vehicle is powered by electricity generated by hydrogen and oxygen through fuel cells. The hydrogen-oxygen reaction process not only has extremely high energy utilization efficiency, but also emits only water, without any pollution to the environment.

[0003] However, on-board hydrogen storage mostly uses high-pressure gaseous hydrogen storage, with a pressure range of 20-70MPa. Due to the characteristics of hydrogen itself, such as leakage, explosiveness, and hydrogen embrittlement, fuel cell vehicles have certain safety hazards, including hydrogen storage safety, the safety of on-board hydrogen systems, and the safety of fuel cell vehicles in the event of collisions and hydrogen leaks. In particular, when hydrogen-powered vehicles are powered off and stationary, there will be hydrogen pipeline leaks. At this time, it is impossible to detect whether there is a leak in the hydrogen pipeline, which poses a huge safety hazard.

[0004] In addition, from the perspective of economy and reusability, the number of existing on-board hydrogen storage bottles cannot meet the requirements of economy and reuse. The existing hydrogen supply control device uses all bottle valves to open or close at the same time, which will cause vehicle current shock, and opening all bottle valves will increase the power consumption of the entire vehicle. Moreover, the existing hydrogen supply control device only uses hydrogen pressure to represent the remaining hydrogen, which may cause inaccurate information on the remaining hydrogen. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a hydrogen supply control device for a fuel cell system and a corresponding control method thereof, so as to solve at least one of the above-mentioned technical problems.

[0006] In order to solve the above problems, the present invention provides a hydrogen supply control device for a fuel cell system, comprising:

[0007] A hydrogen cylinder group, comprising a plurality of hydrogen storage cylinders, wherein the plurality of hydrogen storage cylinders are connected in parallel to the hydrogen supply pipeline through connecting pipelines;

[0008] A plurality of hydrogen cylinder valves, each of which is connected to the corresponding hydrogen storage bottle, and each of which is also integrated with a temperature sensor, a pressure sensor and a solenoid valve;

[0009] A pressure reducing device, the pressure reducing device is arranged on the hydrogen supply pipeline, the pressure reducing device comprises a first-stage pressure reducing valve and a second-stage pressure reducing valve, the first-stage pressure reducing valve is arranged on the gas outlet side close to the hydrogen bottle valve according to the gas supply direction, the second-stage pressure reducing valve is arranged on the gas inlet side close to the fuel cell reactor according to the gas supply direction, and the pressure sensors are respectively installed before and after the first-stage pressure reducing valve and the second-stage pressure reducing valve on the gas supply pipeline;

[0010] Hydrogen leak sensors are installed in the hydrogen storage tank, engine compartment and passenger cabin;

[0011] A hydrogen supply controller, wherein the hydrogen supply controller is electrically connected to the hydrogen leakage sensor, the temperature sensor, the pressure sensor and the solenoid valve respectively;

[0012] The temperature sensor and the pressure sensor are respectively used to collect the temperature and pressure information corresponding to the hydrogen cylinder valve, and the hydrogen leakage sensor is used to collect the hydrogen concentration information in the hydrogen storage compartment, the engine compartment and the passenger compartment. The temperature, the pressure and the hydrogen concentration are transmitted to the hydrogen supply controller, and the hydrogen supply controller is connected to the fuel cell controller FCU through a signal.

[0013] Optionally, the hydrogen cylinder group includes six hydrogen storage cylinders.

[0014] Optionally, the hydrogen supply controller is connected to the main gas outlet valve of the hydrogen cylinder valve, and is used to control the opening of the main gas outlet valve of the hydrogen cylinder valve.

[0015] Optionally, a hydrogenation device is also included, which includes a hydrogenation nozzle, a one-way valve and a filter, the hydrogenation nozzle is connected to the one-way valve, the one-way valve is connected to the filter, and the filter is connected to the hydrogen cylinder valve.

[0016] Optionally, the hydrogen supply controller is a computer, a single chip microcomputer or a programmable controller.

[0017] The present invention also provides a hydrogen supply control method for a fuel cell system, which is applied to the hydrogen supply control device for the fuel cell system described above, and the control method comprises:

[0018] S1: After the hydrogen supply control unit HCU is powered, the hydrogen supply system and hydrogen supply controller of the hydrogen supply control unit HCU perform self-checking;

[0019] S2: After confirming that the hydrogen supply system and the hydrogen supply controller are fault-free, the pressure sensor and temperature sensor of the hydrogen supply control unit HCU detect the hydrogen pressure and temperature respectively, and the hydrogen leakage sensor detects the hydrogen concentration in the hydrogen storage compartment, the engine compartment and the passenger compartment, and feeds back the detection results to the hydrogen supply controller;

[0020] S3: the fuel cell controller FCU issues a control instruction and transmits it to the hydrogen supply controller via the CAN bus, the hydrogen supply controller issues a bottle valve control instruction to the hydrogen supply control device HCU, and the hydrogen supply control device HCU controls the opening of the hydrogen bottle valve;

[0021] S4: Regardless of whether the hydrogen supply control device HCU receives the bottle opening instruction from the fuel cell controller FCU, the hydrogen supply control device HCU actively controls the opening of the hydrogen bottle valve and opens it for a period of time T;

[0022] S5: The hydrogen leakage sensor performs pipeline leakage detection on the gas supply pipeline and detects the hydrogen concentration, and the hydrogen supply control unit HCU calculates the remaining hydrogen amount through the real-time detected hydrogen pressure and hydrogen temperature;

[0023] S6: The hydrogen supply controller obtains the hydrogen pressure, hydrogen temperature, hydrogen concentration and hydrogen remaining amount information of the hydrogen supply control unit HCU, and sends the hydrogen pressure, hydrogen temperature, hydrogen concentration and hydrogen remaining amount information to the fuel cell controller FCU through the CAN bus.

[0024] S7: The hydrogen supply controller obtains the hydrogen pressure, hydrogen temperature, hydrogen concentration and hydrogen remaining amount information of the hydrogen supply control unit HCU, and sends the hydrogen pressure, hydrogen temperature, hydrogen concentration and hydrogen remaining amount information to the fuel cell controller FCU through the CAN bus.

[0025] S8: If the hydrogen pressure, the hydrogen temperature, the hydrogen concentration and the hydrogen remaining amount information meet the set conditions, the normal procedure is entered; otherwise, the hydrogen supply control unit HCU reports a fault and waits for processing.

[0026] Optionally, the setting range of the time T is 2-6 seconds.

[0027] Optionally, the remaining amount of hydrogen in the hydrogen storage bottle is calculated. After the hydrogen bottle valve is opened, the remaining amount of hydrogen is calculated according to the following formula:

[0028]

[0029] Wherein, P is the hydrogen pressure, unit MPa; V is the hydrogen volume, unit L; Z is the hydrogen compression factor; m is the hydrogen mass, unit kg; M is the hydrogen molar mass, unit g / mol.

[0030] Compared with the prior art, the present invention has the following beneficial effects: a plurality of hydrogen storage bottles are controlled simultaneously by a hydrogen supply controller, a hydrogen bottle valve, a temperature sensor, a pressure sensor, a hydrogen leakage sensor and a solenoid valve, and the remaining hydrogen amount is calculated in combination with the hydrogen pressure and temperature signals, so that the result is more accurate; the hydrogen supply pipeline is powered on and actively leak-checked by the hydrogen supply controller and the hydrogen leakage sensor, so that the hydrogen supply system is safer and more reliable; and a hydrogen storage bottle hydrogen supply mechanism is realized by the cooperation of the hydrogen supply controller, the fuel cell controller FCU and the solenoid valve, so as to reduce the current shock and the power consumption of the whole vehicle.

[0031] Another object of the present invention is to provide a hydrogen-powered vehicle to solve the problem of how to increase the number of hydrogen storage bottles on board to meet the requirements of economy and reuse, and to control all hydrogen storage bottle valves to open or close at the same time through a hydrogen supply control device, so as to avoid the impact on the vehicle current and reduce the power consumption of the whole vehicle due to the simultaneous opening of all hydrogen bottle valves. In addition, the hydrogen supply control device is improved, and the hydrogen pressure and hydrogen temperature are used to characterize the remaining hydrogen, so as to improve the accuracy of the detection of the remaining hydrogen. At the same time, when the hydrogen-powered vehicle is powered off and stationary, the hydrogen supply control device continues to detect whether there is a leak in the hydrogen pipeline, so as to improve the safety of the use of hydrogen-powered vehicles.

[0032] To solve the above problems, the technical solution of the present invention is achieved as follows:

[0033] A hydrogen-powered vehicle comprises a hydrogen supply control device for a fuel cell system as described above, wherein a hydrogen supply controller of the hydrogen supply control device stores a computer-readable storage medium and a processor having a computer program, and when the computer program is read and executed by the processor, the hydrogen supply control method as described above is implemented.

[0034] The advantages of the hydrogen-powered vehicle over the prior art are the same as those of the hydrogen supply control device of the fuel cell system, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a control block diagram of a hydrogen supply control device of a fuel cell system in an embodiment of the present invention;

[0036] Figure 2 It is a principle block diagram of a specific example of a hydrogen supply controller of a hydrogen supply control device in an embodiment of the present invention;

[0037] Figure 3 This is a process principle diagram of a hydrogen supply controller according to an embodiment of the present invention;

[0038] Figure 4 The flowchart is a specific example of the control method of the hydrogen supply control device in the embodiment of the present invention.

[0039] Description of reference numerals:

[0040] 1-Hydrogen cylinder group, 11-Hydrogen storage bottle, 12-Connecting pipeline, 2-Hydrogen cylinder valve, 21-Temperature sensor, 22-Pressure sensor, 23-Solenoid valve, 3-Pressure reducing device, 31-First stage pressure reducing valve, 32-Second stage pressure reducing valve, 4-Hydrogen leakage sensor, 5-Hydrogen supply controller, 6-Hydrogenation device, 61-Hydrogenation nozzle, 62-One-way valve, 63-Filter, 7-Fuel cell controller FCU, 8-Fuel cell reactor, 9-Hydrogen supply pipeline. DETAILED DESCRIPTION

[0041] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In the description of the present invention, it should be noted that the terms "first", "second", etc. are used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can also be the internal connection of two components, it can be a wireless connection, or it can be a wired connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0045] On-board hydrogen storage mostly uses high-pressure gaseous hydrogen storage, with a pressure range of 20-70MPa. Due to the characteristics of hydrogen itself, such as leakage, explosiveness, and hydrogen embrittlement, fuel cell vehicles have certain safety hazards, including hydrogen storage safety, on-board hydrogen system safety, fuel cell vehicle collision safety, and safety in the event of hydrogen leakage.

[0046] In addition, from the perspective of economy and reusability, the existing on-board hydrogen storage bottles cannot meet the requirements of economy and reusability. Moreover, the existing hydrogen supply control device uses all hydrogen bottle valves to open or close at the same time, which will cause current shock to the vehicle, and opening all hydrogen bottle valves will increase the power consumption of the entire vehicle.

[0047] Furthermore, the existing hydrogen supply control device only uses hydrogen pressure to characterize the remaining hydrogen amount, which may result in inaccurate information on the remaining hydrogen amount.

[0048] In terms of hydrogen leakage safety, especially when hydrogen vehicles are powered off and stationary, there will be hydrogen pipeline leakage. At this time, it is impossible to detect whether there is a leak in the hydrogen pipeline, which poses a huge safety hazard to people using fuel cell vehicles.

[0049] To solve the above problems, Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a hydrogen supply control device for a fuel cell system, including a hydrogen cylinder group 1, which includes a plurality of hydrogen storage bottles 11, and the plurality of hydrogen storage bottles 11 are connected in parallel to a hydrogen supply pipeline 9 through a connecting pipeline 12;

[0050] There are multiple hydrogen cylinder valves 2, each of which is connected to the corresponding hydrogen storage bottle 11, and the main outlet of the hydrogen cylinder valve 2 is connected to the connecting pipeline 12. Each hydrogen cylinder valve 2 is also integrated with a temperature sensor 21, a pressure sensor 22 and a solenoid valve 23. The temperature sensor 21, the pressure sensor 22 and the solenoid valve 23 are respectively connected to the hydrogen cylinder valve body.

[0051] The pressure reducing device 3 is arranged on the hydrogen supply pipeline 9, and the pressure reducing device 3 includes a first-stage pressure reducing valve 31 and a second-stage pressure reducing valve 32. The first-stage pressure reducing valve 31 is arranged on the outlet side of the hydrogen bottle valve 2 according to the gas supply direction, and is used to reduce the pressure of the hydrogen supplied by the hydrogen storage bottle 11. The second-stage pressure reducing valve 32 is arranged on the inlet side of the fuel cell reactor 8 according to the gas supply direction, and the hydrogen before entering the fuel cell is decompressed again for use by the fuel cell reactor 8. Four pressure sensors 22 are arranged on the hydrogen supply pipeline 9, which are respectively installed on the inlet and outlet sides of the first-stage pressure reducing valve 31 and the second-stage pressure reducing valve 32 on the hydrogen supply pipeline 9.

[0052] The hydrogen leakage sensor 4 is installed in the hydrogen storage compartment, the engine compartment and the passenger compartment to detect the hydrogen concentration in the corresponding environment of the hydrogen-powered vehicle and to promptly remind of hydrogen leakage faults;

[0053] The hydrogen supply controller 5 is electrically connected to the hydrogen leakage sensor 4 , the temperature sensor 21 , the pressure sensor 22 , and the hydrogen leakage sensor 4 .

[0054] The temperature sensor 21 and the pressure sensor 22 are used to collect the temperature and pressure information of the corresponding hydrogen cylinder valve 2 respectively. The hydrogen leakage sensor 4 is used to collect the hydrogen concentration information in the hydrogen storage compartment, the engine compartment and the passenger compartment. The temperature, pressure and hydrogen concentration are transmitted to the hydrogen supply controller 5, and the hydrogen supply controller 5 is connected to the fuel cell controller FCU7 through signals.

[0055] Optionally, the hydrogen cylinder group 1 includes 6 hydrogen storage cylinders 11 .

[0056] like Figure 1 As shown, the hydrogen cylinder group 1 is composed of 6 hydrogen storage bottles 11. The existing metal hydride hydrogen storage device adopts the method of metal hydride hydrogen storage material built into the metal bottle body, and the hydrogen storage density is high, but the use of a single bottle cannot meet the hydrogen supply demand in actual use. If it is used in a field with a large amount of hydrogen, the number of replacements is frequent, which brings great inconvenience. Therefore, the present invention can connect the 6 hydrogen storage bottles 11 into a unit gas supply through a modular connecting pipeline. Of course, combined with the actual demand for hydrogen, several units can also be connected into a larger gas supply unit to increase the amount of hydrogen supply, so as to solve the current storage supply problem and meet different hydrogen demands.

[0057] Specifically, the hydrogen supply controller 5 is connected to the main gas outlet valve of the hydrogen cylinder valve 2 and is used to control the opening of the main gas outlet valve of the hydrogen cylinder valve 2 .

[0058] like Figure 1 As shown, each hydrogen cylinder valve 2 is installed with a corresponding solenoid valve 23, and the solenoid valve 23 controls the opening or closing of the solenoid valve 23 on the hydrogen cylinder valve 2 to control the hydrogen supply.

[0059] In this way, by controlling the opening degree of the main outlet valve of the hydrogen cylinder valve 2, the hydrogen supply can be reasonably controlled, making the use of energy in hydrogen-powered vehicles more economical and reasonable, avoiding waste, and in the event of a safety failure, closing the hydrogen cylinder valve 2 in time to avoid the safety risks caused by the explosion of the hydrogen storage bottle 11.

[0060] Specifically, the hydrogen supply control device also includes a hydrogenation device 6, which includes a hydrogenation nozzle 61, a one-way valve 62 and a filter 63. The hydrogenation nozzle 61 is connected to the one-way valve 62, the one-way valve 62 is connected to the filter 63, and the filter 63 is connected to the hydrogen cylinder valve 2.

[0061] like Figure 1 As shown, the hydrogenation nozzle 61, the one-way valve 62 and the filter 63 are connected to the hydrogen cylinder group 1 to form a hydrogen filling channel. The external high-pressure hydrogen source is connected to the hydrogenation nozzle 61 through the hydrogenation gun head. The high-pressure hydrogen enters the hydrogen cylinder group 1 through the hydrogenation nozzle 61, the one-way valve 62, the filter 63 and the high-pressure pipeline, thereby completing the hydrogen energy replenishment of the hydrogen cylinder group 1.

[0062] Specifically, the hydrogen supply controller 5 is a computer, a single chip microcomputer or a programmable controller.

[0063] like Figure 3As shown, the input end of the signal acquisition module 100 of the hydrogen supply controller 5 is connected to the hydrogen supply control device, and the output end of the signal acquisition module 100 is connected to the signal input end of the microprocessor 200, which is used to collect data information of the hydrogen supply control device and send the data information to the microprocessor 200. The microprocessor 200 generates a first control instruction according to the data information. The first communication end of the microprocessor 200 is connected to the signal receiving / transmitting module 400, which is used to send the data information to the fuel cell controller FCU7, and receive the second control instruction sent by the fuel cell controller FCU7, and send the second control instruction to the control module 300 of the hydrogen supply controller 5; the input end of the control module 300 is connected to the microprocessor 200, and the output end is connected to each solenoid valve 23 of the hydrogen cylinder valve 2, which is used to control the action of each solenoid valve 23 according to the first control instruction and the second control instruction. By collecting data information of the hydrogen supply control device and processing the data information to generate corresponding control instructions to control the solenoid valves 23 of the hydrogen cylinder valve 2, and by receiving instructions from the fuel cell controller FCU7 to control the solenoid valves 23 of the hydrogen cylinder valve 2, real-time monitoring of the hydrogen supply control device is achieved, and precise control of the hydrogen supply control device is achieved based on the monitoring information, thereby ensuring that the entire on-board hydrogen supply system is in a safe, reliable and stable operating state.

[0064] An embodiment of the present invention further provides a hydrogen supply control method for a fuel cell system, which is applied to the hydrogen supply control device for the fuel cell system described above. The hydrogen supply control method comprises the following steps:

[0065] S1: After the hydrogen supply control unit HCU is powered, the hydrogen supply system and hydrogen supply controller of the hydrogen supply control unit HCU perform self-checking;

[0066] S2: After confirming that the hydrogen supply system and the hydrogen supply controller are fault-free, the pressure sensor and temperature sensor of the hydrogen supply control unit HCU detect the hydrogen pressure and temperature respectively, and the hydrogen concentration sensor detects the hydrogen concentration in the hydrogen storage tank, the engine compartment and the passenger compartment, and feeds back the detection results to the hydrogen supply controller;

[0067] S3: the fuel cell controller FCU issues a control instruction and transmits it to the hydrogen supply controller via the CAN bus, the hydrogen supply controller issues a bottle valve control instruction to the hydrogen supply control device HCU, and the hydrogen supply control device HCU controls the opening of the hydrogen bottle valve;

[0068] S4: Regardless of whether the hydrogen supply control device HCU receives the bottle opening instruction from the fuel cell controller FCU, the hydrogen supply control device HCU actively controls the opening of the hydrogen bottle valve and opens it for a period of time T;

[0069] S5: The hydrogen leakage sensor performs pipeline leakage detection on the gas supply pipeline and detects the hydrogen concentration, and the hydrogen supply control unit HCU calculates the remaining hydrogen amount through the real-time detected hydrogen pressure and hydrogen temperature;

[0070] S6: The hydrogen supply controller obtains the hydrogen pressure, hydrogen temperature, hydrogen concentration and hydrogen remaining amount information of the hydrogen supply control unit HCU, and sends the hydrogen pressure, hydrogen temperature, hydrogen concentration and hydrogen remaining amount information to the fuel cell controller FCU through the CAN bus.

[0071] S7: If the hydrogen pressure, the hydrogen temperature, the hydrogen concentration and the hydrogen remaining amount information meet the set conditions, the normal procedure is entered; otherwise, the hydrogen supply control unit HCU reports a fault and waits for processing.

[0072] S8: If the hydrogen pressure, the hydrogen temperature, the hydrogen concentration and the hydrogen remaining amount information meet the set conditions, the normal procedure is entered; otherwise, the hydrogen supply control unit HCU reports a fault and waits for processing.

[0073] Specifically, the setting range of the time T is 2-6 seconds.

[0074] The setting of time T means that if there is a hydrogen pipeline leak during the vehicle's power-off and static process, detection cannot be performed at this time. By setting a certain time T, when the vehicle is powered on, regardless of whether the fuel cell controller FCU7 receives the bottle opening instruction, the hydrogen supply control device actively controls the bottle valve opening time T to perform hydrogen pipeline leak detection. If there is a leak in the pipeline, the bottle valve is closed and the fault is reported for processing. If there is no leak, the bottle valve is closed after time T and the normal processing procedure is entered.

[0075] Specifically, the sampling frequency f of the hydrogen leakage sensor 4 has a value range of 1-5 Hz.

[0076] Such a configuration makes it easier for the hydrogen leakage sensor 4 to collect accurate data information and reduce misjudgment caused by data errors.

[0077] Specifically, the hydrogen supply controller 5 is used to receive the remaining hydrogen amount information of the hydrogen storage bottle 11 and compare it with the minimum remaining amount value of the hydrogen storage bottle stored in the hydrogen supply controller 5. When the remaining hydrogen amount of the hydrogen storage bottle is less than the minimum remaining amount value of the hydrogen storage bottle, an opening adjustment instruction is sent to the hydrogen bottle valve 2 to control the opening of the hydrogen bottle valve 2, so as to close the hydrogen bottle valve 2.

[0078] Specifically, the remaining amount of hydrogen in the hydrogen storage bottle 11 is calculated. After the hydrogen bottle valve 2 is opened, the remaining amount of hydrogen is calculated according to the following formula:

[0079]

[0080] Wherein, P is the hydrogen pressure, unit MPa; V is the hydrogen volume, unit L; Z is the hydrogen compression factor; m is the hydrogen mass, unit kg; M is the hydrogen molar mass, unit g / mol.

[0081] An embodiment of the present invention also provides a hydrogen-powered vehicle, including a hydrogen supply control device for a fuel cell system, wherein a hydrogen supply controller 5 of the hydrogen supply control device stores a computer-readable storage medium and a microprocessor having a computer program. When the computer program is read and executed by the microprocessor, the above-mentioned hydrogen supply control method is implemented.

[0082] The advantages of hydrogen-powered vehicles over existing technologies are the same as those of the hydrogen supply control device of the above-mentioned fuel cell system, which will not be repeated here.

[0083] Although the disclosure is disclosed as above, the protection scope of the disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A hydrogen supply control method for a fuel cell system, characterized in that: A hydrogen supply control device applied to a fuel cell system, the hydrogen supply control device comprising: A hydrogen cylinder group (1) comprising a plurality of hydrogen storage cylinders (11), wherein the plurality of hydrogen storage cylinders (11) are connected in parallel to a hydrogen supply pipeline (9) via connecting pipelines (12); A plurality of hydrogen cylinder valves (2), each of the hydrogen cylinder valves (2) being connected to a corresponding hydrogen storage bottle (11), and each of the hydrogen cylinder valves (2) is further integrated with a temperature sensor (21), a pressure sensor (22) and a solenoid valve (23); A pressure reducing device (3), the pressure reducing device (3) being arranged on the hydrogen supply pipeline (9), the pressure reducing device (3) comprising a first-stage pressure reducing valve (31) and a second-stage pressure reducing valve (32), the first-stage pressure reducing valve (31) being arranged on the gas outlet side close to the hydrogen bottle valve (2) in the gas supply direction, the second-stage pressure reducing valve (32) being arranged on the gas inlet side close to the fuel cell reactor (8) in the gas supply direction, the pressure sensor (22) being respectively installed before and after the first-stage pressure reducing valve (31) and the second-stage pressure reducing valve (32) on the hydrogen supply pipeline (9); A hydrogen leakage sensor (4) is installed in the hydrogen storage compartment, the engine compartment and the passenger compartment; a hydrogen supply controller (5), the hydrogen supply controller (5) being electrically connected to the hydrogen leakage sensor (4), the temperature sensor (21), the pressure sensor (22) and the solenoid valve (23) respectively; The temperature sensor (21) and the pressure sensor (22) are respectively used to collect temperature and pressure information corresponding to the hydrogen cylinder valve (2); the hydrogen leakage sensor (4) is used to collect hydrogen concentration information in the hydrogen storage compartment, the engine compartment and the passenger compartment; the temperature, the pressure and the hydrogen concentration are transmitted to the hydrogen supply controller (5); and the hydrogen supply controller (5) is connected to a fuel cell controller FCU (7) via a signal; The hydrogen supply control method comprises: S1: After the hydrogen supply control device HCU is powered, the hydrogen supply system and the hydrogen supply controller (5) of the hydrogen supply control device HCU perform self-checking; S2: After confirming that the hydrogen supply system and the hydrogen supply controller (5) are free of faults, the pressure sensor (22) and the temperature sensor (21) of the hydrogen supply control unit HCU detect the hydrogen pressure and temperature respectively, and the hydrogen leakage sensor (4) detects the hydrogen concentration in the hydrogen storage compartment, the engine compartment and the passenger compartment, and feeds back the detection results to the hydrogen supply controller (5); S3: the fuel cell controller FCU (7) issues a control instruction and transmits it to the hydrogen supply controller (5) via the CAN bus; the hydrogen supply controller (5) issues a bottle valve control instruction to the hydrogen supply control device HCU; the hydrogen supply control device HCU controls the opening of the hydrogen bottle valve (2); S4: Regardless of whether the hydrogen supply control device HCU receives a bottle opening instruction from the fuel cell controller FCU (7), the hydrogen supply control device HCU actively controls the opening of the hydrogen bottle valve (2) and opens it for a period of time T; S5: the hydrogen leakage sensor (4) performs pipeline leakage detection on the gas supply pipeline and detects the hydrogen concentration, and the hydrogen supply control unit HCU calculates the remaining hydrogen amount through the real-time detected hydrogen pressure and hydrogen temperature; S6: the hydrogen supply controller (5) obtains the hydrogen pressure, hydrogen temperature, hydrogen concentration and hydrogen remaining amount information of the hydrogen supply control unit HCU, and sends the hydrogen pressure, hydrogen temperature, hydrogen concentration and hydrogen remaining amount information to the fuel cell controller FCU (7) via a CAN bus; S7: the hydrogen supply controller (5) obtains the hydrogen pressure, hydrogen temperature, hydrogen concentration and hydrogen remaining amount information of the hydrogen supply control unit HCU, and sends the hydrogen pressure, hydrogen temperature, hydrogen concentration and hydrogen remaining amount information to the fuel cell controller FCU (7) via a CAN bus; S8: If the hydrogen pressure, the hydrogen temperature, the hydrogen concentration and the hydrogen remaining amount information meet the set conditions, the normal procedure is entered; otherwise, the hydrogen supply control unit HCU reports a fault and waits for processing.

2. The hydrogen supply control method for a fuel cell system according to claim 1, characterized in that: The setting range of the time T is 2-6 seconds.

3. The hydrogen supply control method for a fuel cell system according to claim 1, characterized in that: The hydrogen supply controller (5) is used to receive the remaining hydrogen amount information of the hydrogen storage bottle (11) and compare it with the minimum remaining amount value of the hydrogen storage bottle stored in the hydrogen supply controller (5); when the remaining hydrogen amount of the hydrogen storage bottle (11) is less than the minimum remaining amount value of the hydrogen storage bottle (11), an opening adjustment instruction is sent to the hydrogen bottle valve (2) to control the opening of the hydrogen bottle valve (2), so as to close the hydrogen bottle valve (2) of the hydrogen storage bottle (11).

4. The hydrogen supply control method for a fuel cell system according to claim 1, characterized in that: The remaining amount of hydrogen in the hydrogen storage bottle (11) is calculated. After the hydrogen bottle valve (2) is opened, the remaining amount of hydrogen is calculated according to the following formula: Wherein, P is the hydrogen pressure, unit MPa; V is the hydrogen volume, unit L; Z is the hydrogen compression factor; m is the hydrogen mass, unit kg; M is the hydrogen molar mass, unit g / mol.

5. The hydrogen supply control method for a fuel cell system according to claim 1, characterized in that: The hydrogen cylinder group (1) comprises six hydrogen storage cylinders.

6. The hydrogen supply control method for a fuel cell system according to claim 1, characterized in that: The hydrogen supply controller (5) is connected to the main gas outlet valve of the hydrogen cylinder valve (2) and is used to control the opening degree of the main gas outlet valve of the hydrogen cylinder valve (2).

7. The hydrogen supply control method for a fuel cell system according to claim 1, characterized in that: The invention also comprises a hydrogenation device (6), wherein the hydrogenation device (6) comprises a hydrogenation pipe port (61), a one-way valve (62) and a filter (63), wherein the hydrogenation pipe port (61) is connected to the one-way valve (62), the one-way valve (62) is connected to the filter (63), and the filter (63) is connected to the hydrogen cylinder valve (2).

8. The hydrogen supply control method for a fuel cell system according to any one of claims 1 to 7, characterized in that: The hydrogen supply controller (5) is a computer, a single chip microcomputer or a programmable controller.

9. A hydrogen-powered vehicle, characterized in that: The invention comprises a hydrogen supply control device for a fuel cell system, wherein a hydrogen supply controller (5) of the hydrogen supply control device has a computer-readable storage medium storing a computer program and a microprocessor, wherein when the computer program is read and executed by the processor, the hydrogen supply control method for the fuel cell system according to any one of claims 1 to 8 is implemented.

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