Control method and device of hydrogen fuel cell engine and electric vehicle

Abstract

The application discloses a hydrogen fuel cell engine control method and device and an electric vehicle. The method comprises the following steps: obtaining the working state of a load end; when the working state of the load end is turned on, determining the power distribution of the load end, wherein the power distribution of the load end is the percentage of the total power generation of the hydrogen fuel cell engine; and controlling the operation of the hydrogen fuel cell engine according to the power distribution of the load end. The application solves the technical problem that the power generation efficiency of the hydrogen fuel cell engine is not high and the hydrogen fuel cell engine cannot adapt to all working condition requirements of the vehicle in the related art.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicles, and more specifically, to a control method and apparatus for a hydrogen fuel cell engine, as well as an electric vehicle. Background Technology

[0002] The development of pure electric vehicles faces certain bottlenecks due to environmental pollution from exhaust emissions from traditional gasoline vehicles, range anxiety associated with pure electric vehicles, and the fact that the energy density of lithium batteries cannot be significantly improved in the short term. Hydrogen fuel cells, on the other hand, possess the conditions for industry development due to their high fuel efficiency, zero emissions, faster refueling speed than charging speed, and lack of range anxiety.

[0003] Hydrogen fuel cells primarily function to charge / recharge the vehicle's power battery. The hydrogen fuel cell controller reads information such as the vehicle's power battery's SOC, individual cell voltage, and individual cell temperature from the CAN network to determine whether to charge the battery. Currently, most hydrogen fuel system manufacturers offer two solutions:

[0004] (1) When the state of charge (SOC) and cell voltage of the battery are detected to be lower than a certain threshold, the hydrogen fuel cell starts and the hydrogen fuel cell controller controls the boost DC to DC power supply (DCDC) to charge the battery at constant power according to the instructions of the vehicle controller.

[0005] (2) When the battery SOC, cell voltage, etc. are detected to be below a certain threshold, the hydrogen fuel cell starts and, based on factors such as battery charge, fuel cell charging current, and charging efficiency, the hydrogen fuel cell controller controls the boost DC-DC to set several power levels to charge the battery according to the instructions of the vehicle controller. For example, when the SOC is below 80%, the boost DC-DC outputs 50% power; when the SOC is below 60%, the boost DC-DC outputs 100% power.

[0006] Both of the above solutions can meet the basic requirements of the vehicle, but the power generation efficiency is not high and cannot meet all the operating conditions of the vehicle. For example, when encountering special operating conditions such as climbing hills or rapid acceleration, the output of the hydrogen fuel cell engine cannot keep up in time, which may lead to insufficient power and slow vehicle movement, and other driving hazards.

[0007] There is currently no effective solution to the above problems. Summary of the Invention

[0008] This invention provides a control method, apparatus, and electric vehicle for a hydrogen fuel cell engine, to at least solve the technical problem in the related art that the power generation efficiency of hydrogen fuel cell engines is low and cannot meet all the operating conditions of vehicles.

[0009] According to one aspect of the present invention, a control method for a hydrogen fuel cell engine is provided, comprising: acquiring the operating state of a load end; determining the power allocation of the load end when the operating state of the load end is on, wherein the power allocation of the load end is a percentage of the total power generated by the hydrogen fuel cell engine; and controlling the operation of the hydrogen fuel cell engine based on the power allocation of the load end.

[0010] Optionally, the load end includes at least one of the following: a drive system, a power steering system, an air compressor pumping system, an air conditioner, and a DC-DC converter.

[0011] Optionally, controlling the operation of the hydrogen fuel cell engine according to the power distribution at the load end includes: adjusting the output power of the hydrogen fuel cell engine to generate electricity according to the power distribution at the load end.

[0012] Optionally, the method further includes: obtaining the depth of the accelerator pedal; and determining the total power generation of the hydrogen fuel cell engine based on the depth of the accelerator pedal, wherein the depth of the accelerator pedal is positively correlated with the total power generation of the hydrogen fuel cell engine.

[0013] Optionally, after determining the total power generation of the hydrogen fuel cell engine based on the depth of the accelerator pedal, the method further includes: maintaining the hydrogen fuel cell engine at full power when the motor speed is less than or equal to a motor speed threshold; or adjusting the total power generation of the hydrogen fuel cell engine based on the motor torque when the motor speed is greater than a motor speed threshold.

[0014] Optionally, adjusting the total power generation of the hydrogen fuel cell engine based on the motor torque includes: when the motor torque is less than a torque threshold, adjusting the total power generation of the hydrogen fuel cell engine in the corresponding power generation range according to the motor speed within a preset speed range.

[0015] According to another aspect of the present invention, a control device for a hydrogen fuel cell engine is also provided, comprising: a first acquisition module for acquiring the operating state of a load end; a first determination module for determining the power allocation of the load end when the operating state of the load end is on, wherein the power allocation of the load end is the percentage of the load end in the total power generation of the hydrogen fuel cell engine; and a control module for controlling the operation of the hydrogen fuel cell engine based on the power allocation of the load end.

[0016] According to another aspect of the present invention, an electric vehicle is also provided, the electric vehicle including the control device for the hydrogen fuel cell engine described above.

[0017] According to another aspect of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device where the computer-readable storage medium is located to perform the control method of the hydrogen fuel cell engine described in any one of the above embodiments.

[0018] According to another aspect of the present invention, a processor is also provided, the processor being configured to run a program, wherein the program, when running, executes the control method for a hydrogen fuel cell engine as described in any one of the above embodiments.

[0019] In this embodiment of the invention, the operating state of the load end is acquired; when the operating state of the load end is "on", the power allocation of the load end is determined, wherein the power allocation of the load end is the percentage of the total power generated by the hydrogen fuel cell engine relative to the load end; based on the power allocation of the load end, the operation of the hydrogen fuel cell engine is controlled, and the operation of the hydrogen fuel cell engine is adjusted in real time by adjusting the operating state of the load end to achieve the goal of balancing the output power of the hydrogen fuel cell engine with the dynamic system of the vehicle, thereby ensuring the energy supply of the vehicle and meeting the technical effect of various actual operating conditions of the vehicle, thus solving the technical problem in related technologies that the power generation efficiency of hydrogen fuel cell engines is not high and cannot meet the needs of all operating conditions of the vehicle. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0021] Figure 1 This is a flowchart of a control method for a hydrogen fuel cell engine according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram showing the relationship between the output power of a hydrogen fuel cell system and the accelerator pedal according to an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram showing the relationship between the external characteristic curve of the motor and the power of the fuel cell according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the control device for a hydrogen fuel cell engine according to an embodiment of the present invention. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] Example 1

[0028] According to an embodiment of the present invention, an embodiment of a control method for a hydrogen fuel cell engine is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0029] Figure 1 This is a flowchart of a control method for a hydrogen fuel cell engine according to an embodiment of the present invention, such as... Figure 1 As shown, the control method for this hydrogen fuel cell engine includes the following steps:

[0030] Step S102: Obtain the working status of the load end;

[0031] The operating status of the aforementioned load includes two different states, such as on or off. Specifically, the load is an air conditioner, which can be either on or off. Of course, in specific implementations, other terms can be used to describe the operating status of the load, such as running or not running. It should be noted that the aforementioned load includes, but is not limited to, air conditioners.

[0032] Step S104: When the working state of the load end is on, determine the power allocation of the load end, wherein the power allocation of the load end is the percentage of the load end in the total power generation of the hydrogen fuel cell engine.

[0033] As an alternative embodiment, different electric vehicle configurations have different load terminals, and each load terminal requires different power consumption. The sum of the power distribution of all load terminals is equal to or less than 1. That is, the sum of the power consumption of all load terminals is equal to or less than the total power generated by the hydrogen fuel cell engine.

[0034] As an optional embodiment, the aforementioned load includes, but is not limited to, a drive system, a power steering system, an air compressor system, an air conditioner, and a DC-DC converter. Optionally, the power allocation for the drive system can be 80%, the power allocation for the power steering system can be 3%, the power allocation for the air compressor system can be 4%, the power allocation for the air conditioner can be 3%, and the power allocation for the DC-DC converter can be 10%. The aforementioned DC-DC converter is a DC-to-DC power supply.

[0035] Step S106: Control the operation of the hydrogen fuel cell engine according to the power distribution at the load end.

[0036] It should be noted that the vehicle is equipped with a hydrogen fuel cell system, which includes at least a hydrogen fuel cell engine.

[0037] Through the above steps, the operating status of the load end can be obtained first. Then, when the load end is in the "on" state, the power distribution of the load end can be determined. The power distribution of the load end is the percentage of the total power generated by the hydrogen fuel cell engine relative to the load end. Based on the power distribution of the load end, the operation of the hydrogen fuel cell engine can be controlled. By adjusting the operation of the hydrogen fuel cell engine in real time through the operating status of the load end, the output power of the hydrogen fuel cell engine can be balanced with the dynamic system of the vehicle. This achieves the technical effect of ensuring the energy supply of the vehicle and meeting the various actual operating conditions of the vehicle. In this way, it solves the technical problem of low power generation efficiency of hydrogen fuel cell engines in related technologies, which cannot meet the needs of all operating conditions of the vehicle.

[0038] Optionally, the load end includes at least one of the following: a drive system, a power steering system, an air compressor system, an air conditioner, and a DC-DC converter.

[0039] It should be noted that the aforementioned load can be at least one of the following: drive system, power steering system, air compressor system, air conditioner, or DC converter. However, in practice, the load is not limited to drive system, power steering system, air compressor system, air conditioner, or DC converter.

[0040] Optionally, controlling the operation of the hydrogen fuel cell engine based on the power distribution at the load end includes: adjusting the output power of the hydrogen fuel cell engine to generate electricity according to the power distribution at the load end.

[0041] As an optional embodiment, in vehicles equipped with hydrogen fuel cell systems, the battery capacity is relatively small, and the vehicle's electricity consumption mainly comes from the hydrogen fuel cell engine. When the vehicle stops or briefly stops, the hydrogen fuel cell engine distributes power according to the on / off status of the main power-consuming loads to ensure that the battery is always in a relatively ideal charge state. Optionally, the output power of the hydrogen fuel cell system is mainly used for the aforementioned loads, and the output power of the hydrogen fuel cell engine can be adjusted in real time according to the on / off status of each load.

[0042] As an optional embodiment, when the vehicle is stationary (vehicle speed is 0), with the key in the ON position, the air conditioning is used for cooling / heating. If the air conditioning power is too high, it will consume the energy of the power battery. The hydrogen fuel cell engine reads from the CAN bus that the air conditioning is on, and then operates to generate electricity at 10% of the rated power of the hydrogen fuel cell engine according to the power allocation.

[0043] As an optional embodiment, when the vehicle is stationary (vehicle speed 0) with the key in the ON position, if the air compressor system is operating, it will consume energy from the power battery. The hydrogen fuel cell engine reads from the CAN bus that the air compressor system is in the on state, and then generates electricity at 4% of the hydrogen fuel cell engine's rated power according to power allocation. It should be noted that the aforementioned air compressor system includes an air compressor controller; in specific implementation, the operating state of the air compressor system is actually the operating state of the air compressor controller.

[0044] As an optional embodiment, when the vehicle is stationary (vehicle speed 0) with the key in the ON position, if the power steering system is active, it will consume energy from the power battery. The hydrogen fuel cell engine reads from the CAN bus that the air compressor controller is in the ON state, and then generates electricity at 3% of the rated power of the hydrogen fuel cell engine according to the power allocation. It should be noted that the above-mentioned power steering system includes an oil pump controller, and in the specific implementation, the working state of the power steering system is actually the working state of the oil pump controller.

[0045] As an optional embodiment, when the vehicle is stationary (vehicle speed is 0) and the key is in the ON position, the high-voltage electrical appliances on the vehicle are not turned on, but the low-voltage power supply of all electrical appliances is normal. The low-voltage power is converted from the high-voltage power of the power battery to the 24V low-voltage power of the lead-acid battery through a DC-DC converter, which supplies 24V power to all components of the vehicle. The hydrogen fuel cell engine reads the discharge current of the power battery from the CAN bus, and then generates electricity at 3% of the rated power of the hydrogen fuel cell engine according to the power allocation.

[0046] Optionally, the above method further includes: obtaining the depth of the accelerator pedal; determining the total power generation of the hydrogen fuel cell engine based on the depth of the accelerator pedal, wherein the depth of the accelerator pedal is positively correlated with the total power generation of the hydrogen fuel cell engine.

[0047] As an alternative embodiment, vehicles equipped with hydrogen fuel cell systems have relatively small battery capacities. The vehicle's electricity consumption mainly comes from the hydrogen fuel cell engine. When the driver presses the accelerator pedal to the floor and the vehicle accelerates rapidly, the motor torque increases rapidly, requiring a large current. Since the hydrogen fuel cell vehicle's battery capacity is relatively small, its discharge capacity is not very large. Under these conditions, the hydrogen fuel cell engine needs to intervene. The required power output is calculated based on actual needs, and the power output capacity of the battery is matched to meet the power demand of the vehicle's rapid acceleration.

[0048] Figure 2 This is a schematic diagram illustrating the relationship between the output power of a hydrogen fuel cell system and the accelerator pedal according to an embodiment of the present invention, as shown below. Figure 2 As shown in the curve relationship between the output power of the hydrogen fuel cell system and the accelerator pedal, the depth of the accelerator pedal determines the driver's power demand; the greater the accelerator pedal depth, the greater the output power of the fuel cell.

[0049] Figure 3 This is a schematic diagram illustrating the correspondence between the external characteristic curve of the motor and the power of the fuel cell according to an embodiment of the present invention, as shown below. Figure 3As shown, the power output of a hydrogen fuel cell system also needs to be adjusted according to the torque of the motor under certain operating conditions. The peak torque of each vehicle's drive motor is a fixed value. Based on the linear relationship between the accelerator pedal depth and the peak torque (0-peak torque), during vehicle start-up, the motor speed is low, and the accelerator pedal depth determines the vehicle's power demand at this time, i.e., the demand for peak torque (0-peak torque). During vehicle start-up, the driver presses the accelerator pedal all the way down to enable rapid vehicle acceleration. At this time, the motor torque rises rapidly, the vehicle's current demand is very high, and the target torque provided by the vehicle controller is also correspondingly high. 100% accelerator pedal pressure corresponds to 100% of the fuel cell engine's rated power, meeting the high current demand required during vehicle start-up. If loads such as the air conditioner or air compressor are operating at this time, the fuel cell engine's output power is adjusted according to the power distribution.

[0050] Optionally, after determining the total power generation of the hydrogen fuel cell engine based on the depth of the accelerator pedal, the method further includes: maintaining the hydrogen fuel cell engine at full power when the motor speed is less than or equal to the motor speed threshold; or adjusting the total power generation of the hydrogen fuel cell engine based on the motor torque when the motor speed is greater than the motor speed threshold.

[0051] As an optional implementation, when the vehicle is climbing a hill, with the accelerator pedal fully depressed, the electric motor operates in a high-torque, high-power mode, resulting in consistently high current demand. A 100% accelerator pedal depth corresponds to the hydrogen fuel cell engine operating at full power. If the motor speed is less than or equal to 600 rpm, the hydrogen fuel cell engine can maintain full power operation. If the motor speed exceeds 600 rpm, the power output of the hydrogen fuel cell engine can be adjusted according to the current motor torque. It should be noted that the motor speed threshold varies depending on the vehicle model.

[0052] Optionally, adjusting the total power generation of the hydrogen fuel cell engine based on the motor torque includes: when the motor torque is less than the torque threshold, adjusting the total power generation of the hydrogen fuel cell engine in the corresponding power generation range according to the motor speed within the preset speed range.

[0053] As an optional embodiment, vehicles equipped with hydrogen fuel cell systems have relatively small battery capacities, with the vehicle's electricity primarily generated by the hydrogen fuel cell engine. When the vehicle is traveling at high speeds, the motor speed is very high, and the motor torque is relatively low. To ensure a stable and continuous maximum speed (e.g., a speed limit of 69 km / h), the driver will press the accelerator pedal to the floor. If the accelerator pedal is engaged, the hydrogen fuel cell engine will output its maximum power. However, when the vehicle is traveling at high speeds, the drive system motor torque is relatively low, and the speed is relatively high. The vehicle will enter the constant power region of the motor's external characteristics. At this time, the drive system's power demand is constant, and the current required to maintain high-speed operation is much less than the current at the moment of vehicle start-up. The hydrogen fuel cell engine needs to be correlated with the external characteristic curve corresponding to the motor torque / speed. As the motor torque (or motor speed) gradually decreases and the speed gradually increases, the power output of the hydrogen fuel cell engine can gradually decrease from the maximum power output at start-up to a stable power output as the motor torque decreases (speed increases) until it reaches the constant power region of the drive motor's external characteristics. During this process, the output power of the fuel cell engine depends on the overall vehicle power consumption. The maximum power of a fuel cell is theoretically calculated to be greater than the power consumption of the drive system under continuous operating conditions of the vehicle plus the power consumption of other loads on the vehicle.

[0054] As an alternative implementation, when the vehicle is traveling at high speed, the motor speed is very high and the motor torque is relatively low. To ensure the vehicle's stable and continuous maximum speed (e.g., a speed limit of 69 km / h), the driver will press the accelerator pedal all the way down. If the accelerator pedal is engaged, the hydrogen fuel cell engine will output its maximum power. However, when the vehicle is traveling at high speed, the drive system motor torque is relatively low and the speed is relatively high. The vehicle will enter the constant power region of the motor's external characteristics. At this time, the drive system's power demand is constant, and the current required to maintain high-speed operation is much less than the current at the moment of vehicle start-up. The hydrogen fuel cell engine needs to be correlated with the motor torque / speed. When the motor speed is between 600 rpm and 1000 rpm, the drive motor torque decreases, the required power also decreases, and the corresponding power generation of the fuel cell also needs to decrease. When the motor speed is greater than 1000 rpm, the motor enters the constant power region, and the power generation of the hydrogen fuel cell engine is also output at a constant output. That is, the power generation of the fuel cell needs to be correlated with the external characteristic curve of the motor to achieve power following.

[0055] Example 2

[0056] According to another aspect of the present invention, a control device for a hydrogen fuel cell engine is also provided. Figure 4 This is a schematic diagram of the control device for a hydrogen fuel cell engine according to an embodiment of the present invention, such as... Figure 4As shown, the control device for the hydrogen fuel cell engine includes: a first acquisition module 42, a first determination module 44, and a control module 46. The control device for the hydrogen fuel cell engine will be described in detail below.

[0057] The first acquisition module 42 is used to acquire the working status of the load end; the first determination module 44 is connected to the first acquisition module 42 and is used to determine the power allocation of the load end when the working status of the load end is on, wherein the power allocation of the load end is the percentage of the load end in the total power generation of the hydrogen fuel cell engine; the control module 46 is connected to the first determination module 44 and is used to control the operation of the hydrogen fuel cell engine according to the power allocation of the load end.

[0058] In the above embodiments of the present invention, the control device of the hydrogen fuel cell engine can adjust the operation of the hydrogen fuel cell engine in real time according to the working state of the load end, so as to achieve the purpose of balancing the output power of the hydrogen fuel cell engine with the dynamic system of the whole vehicle, thereby achieving the technical effect of ensuring the energy supply of the vehicle and meeting the various actual use conditions of the vehicle, and thus solving the technical problem that the power generation efficiency of the hydrogen fuel cell engine in the related technology is not high and cannot meet the needs of all vehicle operating conditions.

[0059] It should be noted that the above modules can be implemented by software or hardware. For example, for the latter, it can be implemented in the following ways: the above modules can be located in the same processor; or the above modules can be located in different processors in any combination.

[0060] It should be noted that the first acquisition module 42, the first determination module 44, and the control module 46 mentioned above correspond to steps S102 to S106 in Embodiment 1. The examples and application scenarios implemented by the above modules and their corresponding steps are the same, but they are not limited to the content disclosed in Embodiment 1. It should be noted that the above modules, as part of the device, can be executed in a computer system such as a set of computer-executable instructions.

[0061] Optionally, the load end includes at least one of the following: a drive system, a power steering system, an air compressor system, an air conditioner, and a DC-DC converter.

[0062] Optionally, the control module 46 includes an adjustment unit for adjusting the output power of the hydrogen fuel cell engine to generate electricity according to the power distribution at the load end.

[0063] Optionally, the above device further includes: a second acquisition module for acquiring the depth of the accelerator pedal; and a second determination module for determining the total power generation of the hydrogen fuel cell engine based on the depth of the accelerator pedal, wherein the depth of the accelerator pedal is positively correlated with the total power generation of the hydrogen fuel cell engine.

[0064] Optionally, the above-mentioned device is also used to maintain the hydrogen fuel cell engine at full power when the motor speed is less than or equal to the motor speed threshold after determining the total power generation of the hydrogen fuel cell engine based on the depth of the accelerator pedal; or, when the motor speed is greater than the motor speed threshold, adjust the total power generation of the hydrogen fuel cell engine based on the motor torque.

[0065] Optionally, the above-mentioned device is used to adjust the total power generation of the hydrogen fuel cell engine in the corresponding power generation range according to the motor speed within the preset speed range when the motor torque is less than the torque threshold.

[0066] Example 3

[0067] According to another aspect of the present invention, an electric vehicle is also provided, which includes the control device for the hydrogen fuel cell engine described above.

[0068] Example 4

[0069] According to another aspect of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored program, wherein, when the program is executed, the device where the computer-readable storage medium is located executes the control method of any one of the above-described hydrogen fuel cell engine.

[0070] Optionally, in this embodiment, the computer-readable storage medium may be located in any computer terminal in a group of computer terminals in a computer network, or in any mobile terminal in a group of mobile terminals, and the computer-readable storage medium includes a stored program.

[0071] Optionally, during program execution, the device containing the computer-readable storage medium may be controlled to perform the following functions: obtain the operating status of the load end; when the operating status of the load end is "on", determine the power allocation of the load end, wherein the power allocation of the load end is the percentage of the load end in the total power generation of the hydrogen fuel cell engine; and control the operation of the hydrogen fuel cell engine based on the power allocation of the load end.

[0072] Example 5

[0073] According to another aspect of the present invention, a processor is also provided for running a program, wherein the program executes the control method of any of the above-described hydrogen fuel cell engine during runtime.

[0074] This invention provides a device including a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs the following steps: obtaining the operating state of the load end; when the operating state of the load end is "on", determining the power allocation of the load end, wherein the power allocation of the load end is the percentage of the load end in the total power generation of the hydrogen fuel cell engine; and controlling the operation of the hydrogen fuel cell engine based on the power allocation of the load end.

[0075] The present invention also provides a computer program product, which, when executed on a data processing device, is suitable for executing an initialization program having the following method steps: obtaining the working state of the load end; when the working state of the load end is on, determining the power allocation of the load end, wherein the power allocation of the load end is the percentage of the load end in the total power generation of the hydrogen fuel cell engine; and controlling the operation of the hydrogen fuel cell engine according to the power allocation of the load end.

[0076] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0077] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0078] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0079] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0080] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0081] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0082] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A control method for a hydrogen fuel cell engine, characterized in that, include: Get the working status of the load side; When the load is in the on state, the power allocation of the load is determined, wherein the power allocation of the load is the percentage of the load in the total power generation of the hydrogen fuel cell engine. The operation of the hydrogen fuel cell engine is controlled according to the power distribution at the load end; The method further includes: obtaining the depth of the accelerator pedal; determining the total power generation of the hydrogen fuel cell engine based on the depth of the accelerator pedal, wherein the depth of the accelerator pedal is positively correlated with the total power generation of the hydrogen fuel cell engine; The method further includes, after determining the total power output of the hydrogen fuel cell engine based on the depth of the accelerator pedal, maintaining the hydrogen fuel cell engine at full power when the motor speed is less than or equal to a motor speed threshold, and adjusting the total power output of the hydrogen fuel cell engine based on the motor torque when the motor speed is greater than the motor speed threshold.

2. The method according to claim 1, characterized in that, The load end includes at least one of the following: a drive system, a power steering system, an air compressor system, an air conditioner, and a DC converter.

3. The method according to claim 2, characterized in that, Controlling the operation of the hydrogen fuel cell engine based on the power distribution at the load end includes: The output power of the hydrogen fuel cell engine is adjusted to generate electricity according to the power distribution at the load end.

4. The method according to claim 1, characterized in that, Adjusting the total power output of the hydrogen fuel cell engine based on the motor torque includes: When the motor torque is less than the torque threshold, the total power generation of the hydrogen fuel cell engine is adjusted according to the motor speed within the preset speed range, corresponding to the power generation range.

5. A control device for a hydrogen fuel cell engine, characterized in that, include: The first acquisition module is used to acquire the working status of the load side; The first determining module is used to determine the power allocation of the load terminal when the working state of the load terminal is on, wherein the power allocation of the load terminal is the percentage of the load terminal in the total power generation of the hydrogen fuel cell engine. The control module is used to control the operation of the hydrogen fuel cell engine based on the power distribution at the load end; The device is further used to obtain the depth of the accelerator pedal; and to determine the total power generation of the hydrogen fuel cell engine based on the depth of the accelerator pedal, wherein the depth of the accelerator pedal is positively correlated with the total power generation of the hydrogen fuel cell engine. The device is further configured to, after determining the total power generation of the hydrogen fuel cell engine based on the depth of the accelerator pedal, maintain the hydrogen fuel cell engine at full power when the motor speed is less than or equal to the motor speed threshold; and adjust the total power generation of the hydrogen fuel cell engine based on the motor torque when the motor speed is greater than the motor speed threshold.

6. An electric vehicle, characterized in that, The electric vehicle includes the control device for the hydrogen fuel cell engine as described in claim 5.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the control method for a hydrogen fuel cell engine according to any one of claims 1 to 4.

8. A processor, characterized in that, The processor is used to run a program, wherein the program executes the control method for the hydrogen fuel cell engine according to any one of claims 1 to 4.

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