Control method for hydrogen supply system of hydrogen internal combustion engine and vehicle

Abstract

The invention discloses a control method of a hydrogen supply system of a hydrogen internal combustion engine and a vehicle, the hydrogen supply system of the hydrogen internal combustion engine is applied to the vehicle, the hydrogen supply system of the hydrogen internal combustion engine comprises N hydrogen cylinders, a main hydrogen valve and N cylinder valves arranged in one-to-one correspondence with the hydrogen cylinders, N is larger than 1 and is an integer, and each hydrogen cylinder is in pipeline connection with one end of the main hydrogen valve through the corresponding cylinder valve; the other end of the main hydrogen valve is connected with the hydrogen internal combustion engine through a pipeline, and the control method of the hydrogen internal combustion engine hydrogen supply system comprises the steps that a key signal of a vehicle is obtained; the key signal comprises an ON gear signal, a START gear signal, an ACC gear signal and an OFF gear signal; the main hydrogen valve is controlled to be opened or closed at least according to the key signal, the opening number of the cylinder valves is controlled, the starting speed of the hydrogen internal combustion engine can be effectively increased, the knocking phenomenon caused by insufficient hydrogen in the initial stage after the hydrogen internal combustion engine is ignited can be avoided, and the driving experience can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen supply control for vehicles, and in particular to a control method for a hydrogen supply system of a hydrogen internal combustion engine and a vehicle. Background Art

[0002] The onboard hydrogen system is a crucial component of hydrogen internal combustion engine vehicles. When starting the engine, it must quickly supply hydrogen to the engine. The hydrogen supply response speed of the onboard hydrogen system impacts the vehicle's engine startup experience. A slow or uneven engine start could lead the driver to mistakenly believe the vehicle is malfunctioning. Summary of the Invention

[0003] The present invention provides a control method for a hydrogen supply system of a hydrogen internal combustion engine and a vehicle, so as to improve the response speed when the hydrogen internal combustion engine is started.

[0004] According to one aspect of the present invention, a control method for a hydrogen supply system for a hydrogen internal combustion engine is provided. The hydrogen supply system for a hydrogen internal combustion engine is applied to a vehicle. The hydrogen supply system for a hydrogen internal combustion engine comprises N hydrogen bottles, a main hydrogen valve, and N bottle valves corresponding to each of the hydrogen bottles, where N>1 and N is an integer. Each of the hydrogen bottles is connected to a pipeline at one end of the main hydrogen valve via a corresponding bottle valve; the other end of the main hydrogen valve is connected to the hydrogen internal combustion engine via a pipeline. The control method for the hydrogen supply system for a hydrogen internal combustion engine comprises:

[0005] Obtaining a key signal of the vehicle; the key signal includes an ON gear signal, a START gear signal, an ACC gear signal, and an OFF gear signal;

[0006] At least the main hydrogen valve is controlled to be opened or closed according to the key signal, and the number of openings of the bottle valve is controlled.

[0007] Optionally, controlling the opening or closing of the main hydrogen valve and the number of openings of the bottle valves at least according to the key signal includes:

[0008] When the key signal is switched from the ACC gear signal to the ON gear signal, or when the key signal is switched from the OFF gear signal to the ON gear signal, the main hydrogen valve is controlled to open, and m of the bottle valves are controlled to open; 1≤m<N, and m is an integer.

[0009] Optionally, the control method of the hydrogen supply system for the hydrogen internal combustion engine further includes:

[0010] When the key signal is switched from the ON position signal to the START position signal, the main hydrogen valve and each of the bottle valves are controlled to be open.

[0011] Optionally, before the key signal is switched from the ON position signal to the START position signal, the method further includes:

[0012] Obtaining the duration during which the key signal remains as the ON position signal;

[0013] When the duration is greater than a preset duration, controlling the main hydrogen valve and each of the bottle valves to be closed;

[0014] Until the key signal is switched from the ON gear signal to the START gear signal, the main hydrogen valve and each of the bottle valves are controlled to be open.

[0015] Optionally, the vehicle further comprises a hydrogen internal combustion engine controller;

[0016] After controlling the main hydrogen valve to open and controlling the m bottle valves to open, the method further includes:

[0017] Obtaining the duration during which the key signal remains in the ON position signal, and obtaining a hydrogen supply instruction provided by the hydrogen internal combustion engine controller;

[0018] When the duration is less than or equal to the preset time and the hydrogen supply instruction is an enable signal, controlling the main hydrogen valve and each of the bottle valves to be opened;

[0019] When the duration is greater than the preset time and the hydrogen supply instruction is a non-enable signal, controlling the main hydrogen valve and each of the bottle valves to be closed;

[0020] Until the hydrogen supply instruction becomes an enable signal, the main hydrogen valve and each of the bottle valves are controlled to be open.

[0021] Optionally, after controlling the main hydrogen valve to open and controlling the m bottle valves to open, the method further includes:

[0022] When the duration is less than or equal to the preset time, and the key signal is switched from the ON gear signal to the START gear signal, obtaining the hydrogen supply instruction provided by the hydrogen internal combustion engine controller;

[0023] When the hydrogen supply instruction is an enable signal, all the bottle valves are controlled to open.

[0024] Optionally, the control method of the hydrogen supply system for the hydrogen internal combustion engine further includes:

[0025] After the key signal is switched from the START gear signal to the ON gear signal, when the hydrogen supply instruction is an enable signal, the main hydrogen valve and each of the bottle valves are controlled to be open;

[0026] And, after the key signal is switched from the START gear signal to the ON gear signal, when the hydrogen supply instruction is a non-enable signal, the main hydrogen valve is controlled to open, and the m bottle valves are controlled to open; and the step of returning to execute obtaining the duration for which the key signal remains as the ON gear signal, and obtaining the hydrogen supply instruction provided by the hydrogen internal combustion engine controller is returned.

[0027] Optionally, the control method of the hydrogen supply system for the hydrogen internal combustion engine further includes:

[0028] When the key signal is the OFF gear signal or the ACC gear signal, the main hydrogen valve and each of the bottle valves are controlled to be closed.

[0029] Optionally, the control method of the hydrogen supply system for the hydrogen internal combustion engine further includes: acquiring fault detection information of the hydrogen supply system for the hydrogen internal combustion engine;

[0030] When it is determined according to the fault detection information that a fault exists in the hydrogen supply system of the hydrogen internal combustion engine, the main hydrogen valve and each of the bottle valves are controlled to be closed.

[0031] According to another aspect of the present invention, there is provided a vehicle comprising: a hydrogen internal combustion engine, a hydrogen internal combustion engine controller, a hydrogen supply system for the hydrogen internal combustion engine, and a hydrogen system controller;

[0032] The hydrogen supply system for the hydrogen internal combustion engine includes N hydrogen bottles, a main hydrogen valve, and N bottle valves arranged in one-to-one correspondence with each of the hydrogen bottles, where N>1 and N is an integer;

[0033] Each of the hydrogen bottles is connected to one end of the main hydrogen valve through a corresponding bottle valve; the other end of the main hydrogen valve is connected to the hydrogen internal combustion engine through a pipeline;

[0034] The hydrogen system controller is electrically and / or communicatively connected to the main hydrogen valve, each of the bottle valves and the hydrogen internal combustion engine controller; the hydrogen system controller is used to execute the above-mentioned control method of the hydrogen supply system of the hydrogen internal combustion engine.

[0035] In an embodiment of the present invention, a key signal of a vehicle is first obtained, and the main hydrogen valve is controlled to be opened or closed according to the key signal, as well as the number of bottle valves opened. Before the key signal is switched to the STSRT gear signal, some hydrogen bottles can be controlled to supply hydrogen to the hydrogen internal combustion engine, and hydrogen can be pre-supplied to the hydrogen internal combustion engine, so that the hydrogen internal combustion engine can be quickly started after the key signal is switched to the STSRT gear signal, which can effectively improve the starting speed of the hydrogen internal combustion engine, and can avoid the detonation phenomenon caused by insufficient hydrogen in the initial stage after the hydrogen internal combustion engine is ignited when the key signal is switched from the ON gear signal to the STRST gear signal, thereby effectively improving the driving experience.

[0036] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0038] Figure 1 This is a structural diagram of a hydrogen supply system for a hydrogen internal combustion engine provided by an embodiment of the present invention;

[0039] Figure 2 This is a flow chart of a method for controlling a hydrogen supply system for a hydrogen internal combustion engine provided by an embodiment of the present invention;

[0040] Figure 3 This is a flow chart of another method for controlling a hydrogen supply system for a hydrogen internal combustion engine provided by an embodiment of the present invention;

[0041] Figure 4 This is a flow chart of another method for controlling a hydrogen supply system for a hydrogen internal combustion engine provided by an embodiment of the present invention.

[0042] Figure 5 It is a structural schematic diagram of a vehicle provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0043] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts should fall within the scope of protection of the present invention.

[0044] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention 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 numbers used in this way can be interchanged where appropriate so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0045] Figure 1 Schematic diagram of a hydrogen supply system for a hydrogen internal combustion engine provided by an embodiment of the present invention. The hydrogen supply system 1 for a hydrogen internal combustion engine is applied to a vehicle, such as Figure 1 As shown, the hydrogen supply system 1 for a hydrogen internal combustion engine includes: N hydrogen bottles 11, a main hydrogen valve 12, and N bottle valves 13 arranged in one-to-one correspondence with each hydrogen bottle 11, N>1 and N is an integer, each hydrogen bottle 11 is connected to one end of the main hydrogen valve 12 through a corresponding bottle valve 13; the other end of the main hydrogen valve 12 is connected to the hydrogen internal combustion engine 2 through a pipeline.

[0046] Among them, the main hydrogen valve 12 is set on the main line L1, and each bottle valve 13 is set on the branch line L2. When the main hydrogen valve 12 and each bottle valve 13 are opened, the hydrogen in each hydrogen bottle 11 can be transmitted to the hydrogen internal combustion engine 2 through the bottle valve 13 and the main hydrogen valve 12 in sequence. Alternatively, when some bottle valves 13 are opened, the hydrogen bottle 11 connected to the bottle valve 13 can transmit hydrogen to the hydrogen internal combustion engine 2. It should be noted that Figure 1 The hydrogen supply system 1 for a hydrogen internal combustion engine is exemplarily shown to include two hydrogen bottles 11 , but the present invention is not limited thereto.

[0047] In some embodiments, reference Figure 1 The hydrogen supply system 1 for the hydrogen internal combustion engine may further include a pressure reducing valve 14 , which is arranged in the main line L1 and may be arranged between the main hydrogen valve 12 and each bottle valve 13 , and is used to reduce and stabilize the pressure of the hydrogen and then transmit it to the main hydrogen valve 12 .

[0048] An embodiment of the present invention provides a control method for a hydrogen supply system of a hydrogen internal combustion engine, which can improve the response speed when the hydrogen internal combustion engine is started. The control method for the hydrogen supply system of a hydrogen internal combustion engine can be executed by a hydrogen system controller in a vehicle provided by an embodiment of the present invention.

[0049] Figure 2 This is a flow chart of a method for controlling a hydrogen supply system for a hydrogen internal combustion engine provided by an embodiment of the present invention. Figure 2 As shown, the control method of the hydrogen supply system of the hydrogen internal combustion engine includes:

[0050] S110: Acquire a vehicle key signal.

[0051] Among them, the key signal includes an ON gear signal, a START gear signal, an ACC gear signal and an OFF gear signal.

[0052] Specifically, when the key signal is the OFF gear signal, the vehicle is in the lock gear. At this time, the entire vehicle is powered off, all electrical equipment stops working, and the steering wheel is locked; when the key signal is the ACC gear signal, the vehicle is powered by low voltage, some electrical equipment is powered on, and the instrument panel display is not black; when the key signal is the ON gear signal, the entire vehicle's electrical system is powered on, the instrument panel lights up, and enters the self-test mode; when the key signal is the STARA gear signal, the engine start signal can be initiated to control the engine start.

[0053] S120. Control the main hydrogen valve to be opened or closed at least according to the key signal, and control the number of bottle valves opened.

[0054] Specifically, combined with reference Figure 1 The main hydrogen valve 12 and each bottle valve 13 can be controlled to open or close according to the key signal, so that before the key signal is switched to the STSRT gear signal, some hydrogen bottles 11 can be controlled to supply hydrogen to the hydrogen internal combustion engine 2, and the hydrogen internal combustion engine 2 can be pre-supplied with hydrogen, so that the engine can be started quickly after the key signal is switched to the STSRT gear signal.

[0055] For example, in one embodiment, it can be set that when the key signal is switched from the ACC gear signal to the ON gear signal, or when the key signal is switched from the OFF gear signal to the ON gear signal, the main hydrogen valve is controlled to open, and m bottle valves are controlled to open; 1≤m<N, and m is an integer; when the key signal is switched from the ON gear signal to the START gear signal, the main hydrogen valve and each bottle valve are controlled to open.

[0056] Specifically, when the key signal is switched from the ACC gear signal or the OFF gear signal to the ON gear signal, the main hydrogen valve 12 can be controlled to open first, and some of the bottle valves can be controlled to open. For example, if the hydrogen supply system 1 for the hydrogen internal combustion engine includes two hydrogen bottles 11, one bottle valve 13 can be controlled to open so that one of the hydrogen bottles 11 supplies hydrogen to the hydrogen internal combustion engine 2; if the hydrogen supply system 1 for the hydrogen internal combustion engine includes three hydrogen bottles 11, one bottle valve 13 or two bottle valves 13 can be controlled to open so that one of the hydrogen bottles 11 or two hydrogen bottles 11 supplies hydrogen to the hydrogen internal combustion engine 2. In this way, when the vehicle is in the ON gear, hydrogen can be pre-supplied to the hydrogen internal combustion engine through some of the hydrogen bottles. Before the vehicle is switched to the START gear, a small amount of hydrogen can be supplied to the hydrogen internal combustion engine. After the vehicle enters the START gear, the hydrogen internal combustion engine can quickly ignite the stored hydrogen to achieve a quick start. This can also avoid the detonation phenomenon caused by insufficient hydrogen after the hydrogen internal combustion engine ignites when the key signal is switched from the ON gear signal to the STRST gear signal. When the key signal is switched from the ON position signal to the START position signal, the main hydrogen valve 12 and each bottle valve 13 are controlled to open, so that each hydrogen bottle supplies hydrogen to the hydrogen internal combustion engine, thereby ensuring that the hydrogen internal combustion engine can operate stably.

[0057] The control method of the hydrogen supply system of a hydrogen internal combustion engine provided by an embodiment of the present invention first obtains the key signal of the vehicle, and controls the opening or closing of the main hydrogen valve and the opening number of the bottle valves according to the key signal. Before the key signal is switched to the STSRT gear signal, some hydrogen bottles can be controlled to supply hydrogen to the hydrogen internal combustion engine, and the hydrogen internal combustion engine can be pre-supplied with hydrogen, so that the hydrogen internal combustion engine can be quickly started after the key signal is switched to the STSRT gear signal, which can effectively improve the starting speed of the hydrogen internal combustion engine, and can avoid the detonation phenomenon caused by insufficient hydrogen in the initial stage after ignition of the hydrogen internal combustion engine when the key signal is switched from the ON gear signal to the STRST gear signal, which can effectively improve the driving experience.

[0058] Optional, Figure 3 FIG. 1 is a flow chart of another method for controlling a hydrogen supply system for a hydrogen internal combustion engine provided by an embodiment of the present invention. Figure 3 As shown, the control method of the hydrogen supply system of the hydrogen internal combustion engine includes:

[0059] S210: Acquire a vehicle key signal.

[0060] Among them, the key signal includes an ON gear signal, a START gear signal, an ACC gear signal and an OFF gear signal.

[0061] S220 . When the key signal is switched from the ACC position signal to the ON position signal, or when the key signal is switched from the OFF position signal to the ON position signal, the main hydrogen valve is controlled to open, and the m bottle valves are controlled to open.

[0062] Wherein, 1≤m<N, and m is an integer.

[0063] S230: Obtain the duration during which the key signal remains as the ON position signal.

[0064] S240, determine whether the duration is greater than a preset duration; if so, execute step S250; if not, execute step S270.

[0065] S250, control the main hydrogen valve and each bottle valve to be closed.

[0066] S260 , continuously determining whether the key signal is switched from the ON position signal to the START position signal; if so, executing step S270 ; if not, executing step S250 .

[0067] S270, control the main hydrogen valve and each bottle valve to be open.

[0068] In an embodiment of the present invention, after the key signal is switched from the ACC gear signal or the OFF gear signal to the ON gear signal, the duration of the key signal remaining in the ON gear signal is obtained. If the key signal has not switched to the START gear signal after the duration exceeds the preset time, the main hydrogen valve and each bottle valve are first controlled to be closed to avoid excessive hydrogen being provided to the hydrogen internal combustion engine, which may cause safety hazards. Until the key signal is switched from the ON gear signal to the START gear signal, the main hydrogen valve and each bottle valve are controlled to be opened. It can be understood that if the key signal is switched from the ON gear signal to the START gear signal when the duration is less than or equal to the preset time, the remaining bottle valves can be further controlled to be opened on the basis of the main hydrogen valve and some bottle valves being opened, so that all hydrogen bottles supply hydrogen to the hydrogen internal combustion engine to ensure the reliable operation of the hydrogen internal combustion engine.

[0069] Optionally, the vehicle includes a hydrogen internal combustion engine controller. Figure 4 This is a flow chart of another method for controlling a hydrogen supply system for a hydrogen internal combustion engine provided by an embodiment of the present invention. Figure 4 As shown, the control method of the hydrogen supply system of the hydrogen internal combustion engine includes:

[0070] S311. Acquire a vehicle key signal.

[0071] Among them, the key signal includes an ON gear signal, a START gear signal, an ACC gear signal and an OFF gear signal.

[0072] S312: Determine whether the key signal is switched from the ACC position signal to the ON position signal, or determine whether the key signal is switched from the OFF position signal to the ON position signal; if so, execute step S313; if not, execute step S320.

[0073] S313, control the main hydrogen valve to open, and control the m bottle valves to open.

[0074] Wherein, 1≤m<N, and m is an integer.

[0075] S314: Obtain the duration during which the key signal remains at the ON position signal, and obtain a hydrogen supply instruction provided by the hydrogen internal combustion engine controller.

[0076] S315: Determine whether the duration is less than or equal to the preset time; if so, execute step S316; if not, execute step S318.

[0077] S316. Determine whether the hydrogen supply instruction is an enable signal; if so, execute step S317; if not, return to execute step S313.

[0078] S317. Control the main hydrogen valve and each bottle valve to open.

[0079] S318. Determine whether the hydrogen supply instruction is an enable signal; if so, execute step S317; if not, execute step S319.

[0080] S319, control the main hydrogen valve and each bottle valve to be closed; until the hydrogen supply instruction is an enable signal, control the main hydrogen valve and each bottle valve to be open.

[0081] S320, control the main hydrogen valve and each bottle valve to be closed.

[0082] In an embodiment of the present invention, after the key signal is switched from the ACC gear signal or the OFF gear signal to the ON gear signal, on the basis of controlling the main hydrogen valve to open and controlling the m bottle valves to open, the duration of the key signal remaining as the ON gear signal and the hydrogen supply instruction provided by the hydrogen internal combustion engine controller are further continuously obtained. When the duration is less than or equal to the preset time and the hydrogen supply instruction is a non-enable signal, the states of the main hydrogen valve and the bottle valves remain unchanged; when the duration is less than or equal to the preset time and the hydrogen supply instruction is an enable signal, the main hydrogen valve and the bottle valves are controlled to open, and hydrogen is fully supplied to the hydrogen internal combustion engine to ensure stable operation of the hydrogen internal combustion engine; when the duration is greater than the preset time and the hydrogen supply instruction is a non-enable signal, the main hydrogen valve and the bottle valves are controlled to close, so as to avoid safety hazards caused by excessive hydrogen, until the hydrogen supply instruction is an enable signal, the main hydrogen valve and the bottle valves are controlled to open, and hydrogen is fully supplied to the hydrogen internal combustion engine. The hydrogen internal combustion engine controller outputs a hydrogen supply instruction according to the operating condition, self-test status and load demand of the hydrogen internal combustion engine. When the key signal remains at the ON gear signal, the status of each bottle valve of the main hydrogen valve is further controlled according to the hydrogen supply instruction provided by the hydrogen internal combustion engine controller. Pre-supply of hydrogen or full hydrogen supply can be performed in combination with the operating condition, self-test status and load demand of the hydrogen internal combustion engine, which can further ensure the safety of the hydrogen supply system and the hydrogen internal combustion engine and is conducive to saving energy.

[0083] Exemplarily, when the duration is less than or equal to the preset time, if the key signal is switched from the ON gear signal to the START gear signal, the hydrogen supply instruction provided by the hydrogen internal combustion engine controller is obtained; when the hydrogen supply instruction is an enable signal, each bottle valve is controlled to open.

[0084] Specifically, if the key signal switches from the ON gear signal to the START gear signal within the preset time when the key signal remains in the ON gear signal, the main hydrogen valve and each bottle valve can be controlled according to the hydrogen supply instruction at this time. If the hydrogen supply instruction is an enable signal at this time, each bottle valve is controlled to open to fully supply hydrogen to the hydrogen internal combustion engine; if the hydrogen supply instruction is a non-enable signal, each bottle valve of the main hydrogen valve is controlled to remain in the current state to maintain pre-hydrogen supply to the hydrogen internal combustion engine. The ability to pre-supply hydrogen or fully supply hydrogen to the hydrogen internal combustion engine according to working conditions can further ensure the safety of the hydrogen supply system and the hydrogen internal combustion engine, and is conducive to energy saving.

[0085] For example, after the key signal is switched from the START position signal to the ON position signal, when the hydrogen supply command is an enable signal, the main hydrogen valve and each bottle valve are controlled to be open. Since the key signal is immediately switched to the ON position signal after being switched from the ON position signal to the START position signal, after the key signal is switched from the START position signal to the ON position signal, if the hydrogen supply command remains as an enable signal, the main hydrogen valve and each bottle valve are controlled to be open to fully supply hydrogen to the hydrogen internal combustion engine and ensure stable operation of the hydrogen internal combustion engine.

[0086] In some embodiments, when the key signal is an OFF gear signal or an ACC gear signal, the main hydrogen valve and each bottle valve are controlled to be closed.

[0087] In some embodiments, while acquiring the key signal, fault detection information for the hydrogen supply system of the hydrogen internal combustion engine may also be continuously acquired. This fault detection information may include, for example, bottle valve faults, main hydrogen valve faults, and pipeline faults, although this is not specifically limited in the present embodiment. When a fault is determined in the hydrogen supply system of the hydrogen internal combustion engine based on the fault detection information, the main hydrogen valve and each bottle valve are controlled to close to prevent safety hazards and energy waste caused by hydrogen leakage.

[0088] In some embodiments, the hydrogen internal combustion engine controller can continuously perform fault detection on the hydrogen internal combustion engine. When the fault detection result of the hydrogen internal combustion engine is a fault, the hydrogen supply instruction sent to the hydrogen system controller is a non-enable level to ensure the safety of the hydrogen supply system and the hydrogen internal combustion engine.

[0089] Based on the same inventive concept, an embodiment of the present invention further provides a vehicle, Figure 5 : is a schematic diagram of the structure of a vehicle provided by an embodiment of the present invention, such as Figure 5 As shown, the vehicle includes a hydrogen internal combustion engine 2, a hydrogen internal combustion engine controller 3, a hydrogen supply system 1 for the hydrogen internal combustion engine, and a hydrogen system controller 4. The hydrogen supply system 1 includes: N hydrogen cylinders 11, a main hydrogen valve 12, and N cylinder valves 13 corresponding to each hydrogen cylinder 11, where N>1 and N is an integer. Each hydrogen cylinder 11 is connected to one end of the main hydrogen valve 12 through a corresponding cylinder valve 13 through a pipeline. The other end of the main hydrogen valve 12 is connected to the hydrogen internal combustion engine 2 through a pipeline. The hydrogen system controller 4 is electrically and / or communicatively connected to the main hydrogen valve 12, each cylinder valve 13, and the hydrogen internal combustion engine controller 3. The hydrogen system controller 4 is configured to execute the control method for the hydrogen supply system for the hydrogen internal combustion engine provided in any embodiment of the present invention. Therefore, the vehicle provided in this embodiment of the present invention includes the technical features of the control method for the hydrogen supply system for the hydrogen internal combustion engine provided in any embodiment of the present invention, and can achieve the beneficial effects of the control method for the hydrogen supply system for the hydrogen internal combustion engine provided in any embodiment of the present invention. For similarities, please refer to the above description of the control method for the hydrogen supply system for the hydrogen internal combustion engine provided in the embodiment of the present invention, and will not be repeated here.

[0090] Exemplary, reference Figure 5 The hydrogen internal combustion engine controller 3 and the hydrogen system controller 4 are also electrically connected to signal lines for transmitting key signals, wherein a first signal line S1 can be set for transmitting an ON gear signal, a second signal line S2 for transmitting a START gear signal, a third signal line S3 for transmitting an ACC gear signal, and a fourth signal line S4 for transmitting an OFF gear signal.

[0091] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0092] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A control method for a hydrogen supply system for a hydrogen internal combustion engine, wherein the hydrogen supply system for a hydrogen internal combustion engine is applied to a vehicle, and comprises N hydrogen bottles, a main hydrogen valve, and N bottle valves corresponding to each of the hydrogen bottles, where N>1 and N is an integer, and each of the hydrogen bottles is connected to a pipeline at one end of the main hydrogen valve through the corresponding bottle valve; the other end of the main hydrogen valve is connected to the hydrogen internal combustion engine through a pipeline, characterized in that: The control method of the hydrogen supply system of the hydrogen internal combustion engine includes: Obtaining a key signal of the vehicle; the key signal includes an ON gear signal, a START gear signal, an ACC gear signal, and an OFF gear signal; At least the main hydrogen valve is controlled to be opened or closed according to the key signal, and the number of openings of the bottle valve is controlled.

2. The control method of the hydrogen supply system of a hydrogen internal combustion engine according to claim 1, characterized in that: Controlling the opening or closing of the main hydrogen valve and the number of openings of the bottle valves at least according to the key signal includes: When the key signal is switched from the ACC gear signal to the ON gear signal, or when the key signal is switched from the OFF gear signal to the ON gear signal, the main hydrogen valve is controlled to open, and m of the bottle valves are controlled to open; 1≤m<N, and m is an integer.

3. The control method of the hydrogen supply system of a hydrogen internal combustion engine according to claim 2, characterized in that: Also includes: When the key signal is switched from the ON position signal to the START position signal, the main hydrogen valve and each of the bottle valves are controlled to be open.

4. The control method of the hydrogen supply system of a hydrogen internal combustion engine according to claim 3, characterized in that: Before the key signal is switched from the ON position signal to the START position signal, the method further includes: Obtaining the duration during which the key signal remains as the ON position signal; When the duration is greater than a preset duration, controlling the main hydrogen valve and each of the bottle valves to be closed; Until the key signal is switched from the ON gear signal to the START gear signal, the main hydrogen valve and each of the bottle valves are controlled to be open.

5. The control method of the hydrogen supply system of a hydrogen internal combustion engine according to claim 2, characterized in that: The vehicle also includes a hydrogen internal combustion engine controller; After controlling the main hydrogen valve to open and controlling the m bottle valves to open, the method further includes: Obtaining the duration during which the key signal remains in the ON position signal, and obtaining a hydrogen supply instruction provided by the hydrogen internal combustion engine controller; When the duration is less than or equal to the preset time and the hydrogen supply instruction is an enable signal, controlling the main hydrogen valve and each of the bottle valves to be opened; When the duration is greater than the preset time and the hydrogen supply instruction is a non-enable signal, controlling the main hydrogen valve and each of the bottle valves to be closed; Until the hydrogen supply instruction becomes an enable signal, the main hydrogen valve and each of the bottle valves are controlled to be open.

6. The control method of the hydrogen supply system of a hydrogen internal combustion engine according to claim 5, characterized in that: After controlling the main hydrogen valve to open and controlling the m bottle valves to open, the method further includes: When the duration is less than or equal to the preset time, and the key signal is switched from the ON gear signal to the START gear signal, obtaining the hydrogen supply instruction provided by the hydrogen internal combustion engine controller; When the hydrogen supply instruction is an enable signal, all the bottle valves are controlled to open.

7. The control method of the hydrogen supply system of a hydrogen internal combustion engine according to claim 6, characterized in that: Also includes: After the key signal is switched from the START gear signal to the ON gear signal, when the hydrogen supply instruction is an enable signal, the main hydrogen valve and each of the bottle valves are controlled to be open; And, after the key signal is switched from the START gear signal to the ON gear signal, when the hydrogen supply instruction is a non-enable signal, the main hydrogen valve is controlled to open, and the m bottle valves are controlled to open; and the step of returning to execute obtaining the duration for which the key signal remains as the ON gear signal, and obtaining the hydrogen supply instruction provided by the hydrogen internal combustion engine controller is returned.

8. The control method of the hydrogen supply system of a hydrogen internal combustion engine according to claim 1, characterized in that: Also includes: When the key signal is the OFF gear signal or the ACC gear signal, the main hydrogen valve and each of the bottle valves are controlled to be closed.

9. The control method of the hydrogen supply system of a hydrogen internal combustion engine according to claim 1, characterized in that: Also includes: Obtaining fault detection information of the hydrogen supply system of the hydrogen internal combustion engine; When it is determined according to the fault detection information that a fault exists in the hydrogen supply system of the hydrogen internal combustion engine, the main hydrogen valve and each of the bottle valves are controlled to be closed.

10. A vehicle, characterized in that: include: Hydrogen internal combustion engine, hydrogen internal combustion engine controller, hydrogen supply system for hydrogen internal combustion engine and hydrogen system controller; The hydrogen supply system for the hydrogen internal combustion engine includes N hydrogen bottles, a main hydrogen valve, and N bottle valves arranged in one-to-one correspondence with each of the hydrogen bottles, where N>1 and N is an integer; Each of the hydrogen bottles is connected to one end of the main hydrogen valve through a corresponding bottle valve; the other end of the main hydrogen valve is connected to the hydrogen internal combustion engine through a pipeline; The hydrogen system controller is electrically and / or communicatively connected to the main hydrogen valve, each of the bottle valves and the hydrogen internal combustion engine controller; the hydrogen system controller is used to execute the control method of the hydrogen supply system of the hydrogen internal combustion engine according to any one of claims 1 to 9.

Images