Control method, device and electronic equipment for fuel cell vehicle

Abstract

The present application discloses a control method, device and electronic equipment for a fuel cell vehicle, the method comprising: obtaining a first required power of the fuel cell based on the output power of the fuel cell and the output power of the power battery; obtaining driving information of the fuel cell vehicle; obtaining a second required power of the fuel cell based on the state of charge (SOC) value of the power battery, the state of charge (SOC) limit value of the power battery, the first required power of the fuel cell and the driving information of the fuel cell vehicle; obtaining a protection strategy for the fuel cell, and correcting the second required power according to the protection strategy to obtain a target power of the fuel cell; determining that the start-stop state of the fuel cell is a start-up state, and controlling the fuel cell to output the target power. By obtaining the target power of the fuel cell and controlling the fuel cell to output the target power, the present application improves the service life of the fuel cell and the power battery, achieves the optimal performance of the hybrid power system, and avoids the risk of battery overcharging.

Description

Technical Field

[0001] The present application relates to the field of vehicle control technology, and in particular to control methods, devices, and electronic equipment for fuel cell vehicles. Background Art

[0002] Hydrogen-electric hybrid fuel cell vehicles are a type of fuel cell vehicle. The hybrid power system composed of hydrogen fuel cells and power batteries has the advantages of zero emissions, pollution-free and long mileage. During the operation of fuel cell vehicles, the power of the fuel cell engine is affected by the vehicle speed, battery charge and discharge capabilities, and the power demand of the entire vehicle. It is often necessary to precisely control the output power of the fuel cell to ensure the charge and discharge balance of the power battery in order to increase the service life of the fuel cell and power battery.

[0003] In related technologies, attempts to control fuel cell output power often rely on the battery's state of charge (SOC) and the vehicle's required power to determine the required fuel cell power. However, fuel cell output power cannot match the power tracking capabilities of traditional engines; instead, the fuel cell can only be controlled to operate at a specific power level, failing to achieve optimal hybrid system performance and posing the risk of battery overcharging. Therefore, accurately and reliably controlling fuel cell output power to achieve optimal hybrid system performance has become a pressing issue. Summary of the Invention

[0004] The present application aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, the first purpose of this application is to propose a control method for a fuel cell vehicle to solve the technical problem in the prior art that the output power of the fuel cell cannot be accurately controlled and the optimal performance of the hybrid system cannot be achieved.

[0006] In order to achieve the above-mentioned objectives, the first aspect embodiment of the present application provides a control method for a fuel cell vehicle, the method comprising: obtaining the output power of the fuel cell and the output power of the power battery, and obtaining a first required power of the fuel cell vehicle based on the output power of the fuel cell and the output power of the power battery; obtaining driving information of the fuel cell vehicle, wherein the driving information includes driving road information and driving mode information; obtaining a second required power of the fuel cell based on the state of charge (SOC) value of the power battery, the state of charge (SOC) limit value of the power battery, the first required power of the fuel cell vehicle and the driving information of the fuel cell vehicle; obtaining a protection strategy for the fuel cell, and correcting the second required power according to the protection strategy to obtain a target power of the fuel cell; determining that the start-stop state of the fuel cell is a start state, and controlling the fuel cell to output the target power.

[0007] In addition, the control method for a fuel cell vehicle according to the above embodiment of the present application may also have the following additional technical features:

[0008] According to one embodiment of the present application, the process of determining the start / stop status of the fuel cell includes: obtaining the operating mode of the fuel cell vehicle; and determining the start / stop status of the fuel cell based on the operating mode and the state of charge (SOC) value.

[0009] According to one embodiment of the present application, determining the start / stop state of the fuel cell based on the operating mode and the state of charge (SOC) value includes: in response to the operating mode being a hybrid mode, if the state of charge (SOC) value is lower than a set first SOC threshold, determining that the start / stop state of the fuel cell is a start state; if the state of charge (SOC) value is higher than a set second SOC threshold, determining that the start / stop state of the fuel cell is a stop state; or, in response to the operating mode being a pure electric mode, if the state of charge (SOC) value is lower than the difference between the current state of charge (SOC) value and a set third SOC threshold, determining that the start / stop state of the fuel cell is a start state; if within a preset time, the number of switching times of the operating mode reaches a switching number threshold, determining that the start / stop state of the fuel cell is a stop state.

[0010] According to one embodiment of the present application, obtaining the first required power of the fuel cell vehicle based on the output power of the fuel cell and the output power of the power battery includes: obtaining the sum of the output power of the fuel cell and the output power of the power battery within a target preset time to obtain the output power of the fuel cell vehicle; obtaining the quotient of the output power of the fuel cell vehicle and the target preset time to obtain the first required power.

[0011] According to one embodiment of the present application, the obtaining of driving information of the fuel cell vehicle, wherein the driving information includes driving road information and driving mode information, includes: fusing Internet of Vehicles information to determine the driving road information, wherein the driving road information includes expressways, national highways, and rural roads; and obtaining the driving mode information based on the operating status of the fuel cell vehicle and the driving road information.

[0012] According to one embodiment of the present application, the driving mode information is obtained according to the operating state of the fuel cell vehicle and the driving road information, including: in response to the driving road information being a highway, according to the current vehicle speed and accelerator pedal change rate, querying a pre-established first mapping table of the vehicle speed and accelerator pedal change rate and the acceleration coefficient of the fuel cell vehicle to obtain the acceleration coefficient of the fuel cell vehicle; according to the current vehicle speed and brake pedal change rate, querying a pre-established second mapping table of the vehicle speed and brake pedal change rate and the deceleration coefficient of the fuel cell vehicle to obtain the deceleration coefficient of the fuel cell vehicle; according to the acceleration coefficient and the deceleration coefficient, querying a pre-established third mapping table of the acceleration coefficient and the deceleration coefficient and the driving mode information to determine the driving mode information of the fuel cell vehicle, wherein the driving mode information includes acceleration mode, deceleration mode and cruise mode.

[0013] According to one embodiment of the present application, the driving mode information is obtained based on the operating status of the fuel cell vehicle and the driving road information, including: in response to the driving road information being a national highway, based on the current vehicle speed and traffic light information, querying a pre-established fourth mapping table of the vehicle speed and traffic light information of the fuel cell vehicle and the driving mode information to determine the driving mode information of the fuel cell vehicle, wherein the driving mode information includes a pre-parking mode and a non-pre-parking mode.

[0014] According to one embodiment of the present application, obtaining the second required power of the fuel cell based on the state of charge SOC value of the power battery, the state of charge SOC limit value of the power battery, the first required power of the fuel cell vehicle and the driving information of the fuel cell vehicle includes: obtaining the state of charge SOC maximum threshold value and the state of charge SOC minimum threshold value of the power battery corresponding to the driving information; determining the second required power of the fuel cell based on the state of charge SOC value, the first required power, the driving information, the state of charge SOC limit value, the state of charge SOC maximum threshold value and the state of charge SOC minimum threshold value.

[0015] According to one embodiment of the present application, the second required power of the fuel cell is determined based on the state of charge (SOC) value, the first required power, the driving information, the state of charge (SOC) limit value, the state of charge (SOC) maximum threshold value, and the state of charge (SOC) minimum threshold value, including: in response to the state of charge (SOC) value being within a first interval, determining that the second required power is the sum of the first required power and the compensation power, wherein the first interval is composed of the state of charge (SOC) minimum threshold value and the state of charge (SOC) upper limit value; or, in response to the state of charge (SOC) value being within a second interval, determining that the second required power is a preset power rate, wherein the second interval is composed of a fourth SOC threshold, a fifth SOC threshold, the state of charge SOC minimum threshold, and the state of charge SOC lower limit; or, in response to the state of charge SOC value being less than the state of charge SOC lower limit, the second required power is determined to be the sum of the first required power and the excess power; or, in response to the state of charge SOC value being greater than the state of charge SOC upper limit, the second required power is determined to be the difference between the first required power and the preset power; or, in response to the current vehicle speed of the fuel cell vehicle being less than the preset vehicle speed within the second preset time, the second required power is determined to be the minimum fuel cell operating power.

[0016] According to one embodiment of the present application, the obtaining of a protection strategy for the fuel cell and the correction of the second required power according to the protection strategy to obtain the target power of the fuel cell include: in response to the protection strategy being a power protection strategy, obtaining the allowable operating rated power of the fuel cell, and determining the target power of the fuel cell from the allowable operating rated power and the second required power; or, in response to the protection strategy being an active discharge protection strategy, obtaining the difference between the current power of the fuel cell and the allowable continuous charging power of the power battery, and controlling the electrical accessories of the fuel cell vehicle according to the size of the difference and the driving information to determine the target power of the fuel cell.

[0017] According to one embodiment of the present application, the method further includes: in response to the protection strategy being a braking recovery protection strategy, obtaining the braking demand torque value and the maximum braking torque of the fuel cell vehicle, and selecting the target torque from the braking demand torque value and the maximum braking torque.

[0018] In order to achieve the above-mentioned purpose, the second aspect embodiment of the present application provides a control device for a fuel cell vehicle, which includes: a first acquisition module, used to obtain the output power of the fuel cell and the output power of the power battery, and obtain the first required power of the fuel cell vehicle based on the output power of the fuel cell and the output power of the power battery; a second acquisition module, used to obtain driving information of the fuel cell vehicle, wherein the driving information includes driving road information and driving mode information; a third acquisition module, used to obtain the second required power of the fuel cell based on the state of charge (SOC) value of the power battery, the state of charge (SOC) limit value of the power battery, the first required power of the fuel cell vehicle and the driving information of the fuel cell vehicle; a correction module, used to obtain a protection strategy for the fuel cell, and correct the second required power according to the protection strategy to obtain the target power of the fuel cell; a control module, used to determine that the start-stop state of the fuel cell is the start state, and control the fuel cell to output the target power.

[0019] In addition, the control device for a fuel cell vehicle according to the above embodiment of the present application may also have the following additional technical features:

[0020] According to one embodiment of the present application, the device is further used to: obtain the operating mode of the fuel cell vehicle; and determine the start and stop status of the fuel cell based on the operating mode and the state of charge (SOC) value.

[0021] According to one embodiment of the present application, the device is further used to: in response to the operating mode being a hybrid mode, if the state of charge SOC value is lower than a set first SOC threshold, determine that the start-stop state of the fuel cell is a start state; if the state of charge SOC value is higher than a set second SOC threshold, determine that the start-stop state of the fuel cell is a stop state; or, in response to the operating mode being a pure electric mode, if the state of charge SOC value is lower than the difference between the current state of charge SOC value and a set third SOC threshold, determine that the start-stop state of the fuel cell is a start state; if within a preset time, the number of switching times of the operating mode reaches a switching number threshold, determine that the start-stop state of the fuel cell is a stop state.

[0022] According to one embodiment of the present application, the first acquisition module is further used to: obtain the sum of the output power of the fuel cell and the output power of the power battery within the target preset time to obtain the output power of the fuel cell vehicle; obtain the quotient of the output power of the fuel cell vehicle and the target preset time to obtain the first required power.

[0023] According to one embodiment of the present application, the second acquisition module is further used to: integrate the Internet of Vehicles information to determine the driving road information, wherein the driving road information includes expressways, national highways and rural roads; and obtain the driving mode information based on the operating status of the fuel cell vehicle and the driving road information.

[0024] According to one embodiment of the present application, the second acquisition module is further used to: in response to the driving road information being a highway, query a pre-established first mapping table of the vehicle speed and accelerator pedal change rate and the acceleration coefficient of the fuel cell vehicle according to the current vehicle speed and accelerator pedal change rate to obtain the acceleration coefficient of the fuel cell vehicle; query a pre-established second mapping table of the vehicle speed and brake pedal change rate and the deceleration coefficient of the fuel cell vehicle according to the current vehicle speed and brake pedal change rate to obtain the deceleration coefficient of the fuel cell vehicle; query a pre-established third mapping table of the acceleration coefficient and the deceleration coefficient and the driving mode information according to the acceleration coefficient and the deceleration coefficient to determine the driving mode information of the fuel cell vehicle, wherein the driving mode information includes acceleration mode, deceleration mode and cruise mode.

[0025] According to one embodiment of the present application, the second acquisition module is further used to: in response to the driving road information being a national highway, query a pre-established fourth mapping table of the vehicle speed and traffic light information of the fuel cell vehicle and the driving mode information according to the current vehicle speed and traffic light information, so as to determine the driving mode information of the fuel cell vehicle, wherein the driving mode information includes a pre-parking mode and a non-pre-parking mode.

[0026] According to one embodiment of the present application, the third acquisition module is further used to: obtain the maximum state of charge (SOC) threshold and the minimum state of charge (SOC) threshold of the power battery corresponding to the driving information; and determine the second required power of the fuel cell based on the state of charge (SOC) value, the first required power, the driving information, the state of charge (SOC) limit value, the maximum state of charge (SOC) threshold and the minimum state of charge (SOC) threshold.

[0027] According to one embodiment of the present application, the third acquisition module is further used to: in response to the state of charge (SOC) value being within a first interval, determine the second required power as the sum of the first required power and the compensation power, wherein the first interval is composed of the state of charge (SOC) minimum threshold and the state of charge (SOC) upper limit; or, in response to the state of charge (SOC) value being within a second interval, determine the second required power as a preset power, wherein the second interval is composed of a fourth SOC threshold, a fifth SOC threshold, the state of charge (SOC) minimum threshold, and the state of charge (SOC) lower limit; or, in response to the state of charge (SOC) value being less than the state of charge (SOC) lower limit, determine the second required power as the sum of the first required power and the excess power; or, in response to the state of charge (SOC) value being greater than the state of charge (SOC) upper limit, determine the second required power as the difference between the first required power and the preset power; or, in response to the current vehicle speed of the fuel cell vehicle being less than the preset vehicle speed within a second preset time, determine the second required power as the minimum fuel cell operating power.

[0028] According to one embodiment of the present application, the correction module is further used to: in response to the protection strategy being a power protection strategy, obtain the allowable operating rated power of the fuel cell, and determine the target power of the fuel cell from the allowable operating rated power and the second required power; or, in response to the protection strategy being an active discharge protection strategy, obtain the difference between the current power of the fuel cell and the allowable continuous charging power of the power battery, and control the electrical accessories of the fuel cell vehicle according to the size of the difference and the driving information to determine the target power of the fuel cell.

[0029] According to one embodiment of the present application, the device is also used to: in response to the protection strategy being a braking recovery protection strategy, obtain the braking requirement torque value and the maximum braking torque of the fuel cell vehicle, and select the target torque from the braking requirement torque value and the maximum braking torque.

[0030] In order to achieve the above-mentioned objectives, a third embodiment of the present application provides a vehicle, including the device described in the second aspect.

[0031] In order to achieve the above-mentioned purpose, the fourth aspect embodiment of the present application provides an electronic device, including: a memory, a processor, and a computer program stored on the memory and runnable on the processor. When the processor executes the program, it implements the control method of the fuel cell vehicle as described in any one of the embodiments of the first aspect of the present application.

[0032] In order to achieve the above-mentioned purpose, the fifth embodiment of the present application provides a non-transitory computer-readable storage medium storing computer instructions, which are used to enable a computer to implement a control method for a fuel cell vehicle as described in any one of the first embodiment of the present application when executed. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a flow chart of a control method for a fuel cell vehicle disclosed in one embodiment of the present application.

[0034] Figure 2 This is a flow chart of a control method for a fuel cell vehicle disclosed in another embodiment of the present application.

[0035] Figure 3 This is a flow chart of a control method for a fuel cell vehicle disclosed in another embodiment of the present application.

[0036] Figure 4 This is a flow chart of a control method for a fuel cell vehicle disclosed in another embodiment of the present application.

[0037] Figure 5 This is a flow chart of a control method for a fuel cell vehicle disclosed in another embodiment of the present application.

[0038] Figure 6 This is a flow chart of a control method for a fuel cell vehicle disclosed in another embodiment of the present application.

[0039] Figure 7 This is a flow chart of a control method for a fuel cell vehicle disclosed in another embodiment of the present application.

[0040] Figure 8 This is a schematic structural diagram of a control device for a fuel cell vehicle disclosed in one embodiment of the present application.

[0041] Figure 9 A schematic structural diagram of a vehicle disclosed in one embodiment of the present application.

[0042] Figure 10 This is a schematic structural diagram of an electronic device disclosed in an embodiment of the present application. DETAILED DESCRIPTION

[0043] To better understand the above technical solutions, exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Instead, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0044] The following describes a control method, device, and electronic device for a fuel cell vehicle according to an embodiment of the present application with reference to the accompanying drawings.

[0045] Figure 1 This is a flow chart of a control method for a fuel cell vehicle according to an embodiment disclosed in the present application.

[0046] like Figure 1 As shown, the control method of the fuel cell vehicle proposed in the embodiment of the present application specifically includes the following steps:

[0047] S101 : Obtain the output power of the fuel cell and the output power of the power battery, and obtain a first required power of the fuel cell vehicle based on the output power of the fuel cell and the output power of the power battery.

[0048] Among them, a fuel cell is a power generation device that directly converts the chemical energy contained in fuel and oxidant into electrical energy.

[0049] It should be noted that the present application does not limit the specific method for obtaining the output power of the fuel cell and the output power of the power battery, and can be selected according to actual conditions.

[0050] Optionally, the output current of the fuel cell can be and output voltage Calculating the output power of a fuel cell ,Right now = , calculate the output power of the power battery through the output current BMS_A and output voltage BMS_V of the power battery ,Right now = .

[0051] In the embodiment of the present application, after the output power of the fuel cell and the output power of the power battery are obtained, the first required power of the fuel cell vehicle can be obtained based on the output power of the fuel cell and the output power of the power battery.

[0052] Optionally, the sum of the output power of the fuel cell and the output power of the power battery can be obtained within the target preset time to obtain the output power of the fuel cell vehicle, and the quotient of the output power of the fuel cell vehicle and the target preset time can be obtained to obtain the first required power.

[0053] S102 : Acquire driving information of the fuel cell vehicle, wherein the driving information includes driving road information and driving mode information.

[0054] It should be noted that this application does not limit the type of fuel cell vehicle and can be set according to actual conditions.

[0055] Optionally, the fuel cell vehicle may be a fuel cell light truck.

[0056] Among them, light trucks refer to N2 type vehicles with a maximum design gross mass not exceeding 4.5 tons among the N type trucks in the vehicle classification.

[0057] Optionally, the driving road information may be an expressway, a national highway, and a rural road, and the driving mode information may be an acceleration mode, a deceleration mode, a cruise mode, a pre-parking mode, and a non-pre-parking mode.

[0058] S103 : Obtain a second required power of the fuel cell according to the state of charge (SOC) value of the power battery, the SOC limit value of the power battery, the first required power of the fuel cell vehicle, and driving information of the fuel cell vehicle.

[0059] In an embodiment of the present application, after obtaining the first required power of the fuel cell vehicle and the driving information of the fuel cell vehicle, the second required power of the fuel cell can be obtained based on comprehensive information such as the state of charge SOC value of the power battery, the state of charge SOC limit value of the power battery, the first required power of the fuel cell vehicle and the driving information of the fuel cell vehicle.

[0060] S104: Obtain a protection strategy for the fuel cell, and correct the second required power according to the protection strategy to obtain a target power of the fuel cell.

[0061] It should be noted that the present application does not limit the specific method of the fuel cell protection strategy, which can be set according to actual conditions.

[0062] Optionally, the protection strategy of the fuel cell may be a braking recovery protection strategy, a power protection strategy, and an active discharge protection strategy.

[0063] In the embodiment of the application, after the protection strategy for the fuel cell is obtained, the second required power can be corrected according to the protection strategy to obtain the target power of the fuel cell.

[0064] The target power of the fuel cell is the target power ultimately output by the fuel cell.

[0065] S105: Determine that the start / stop state of the fuel cell is the start state, and control the fuel cell to output the target power.

[0066] The start / stop state of the fuel cell can be a shutdown state or a startup state.

[0067] For example, when the emergency stop switch of the fuel cell vehicle is valid, the start-stop state of the fuel cell is the shutdown state.

[0068] In the embodiment of the present application, when it is determined that the state of the fuel cell is the startup state, the fuel cell can be controlled to output the target power.

[0069] The control method of the fuel cell vehicle provided in the present application obtains the output power of the fuel cell and the output power of the power battery, obtains the first required power of the fuel cell vehicle based on the output power of the fuel cell and the output power of the power battery, obtains driving information of the fuel cell vehicle, wherein the driving information includes driving road information and driving mode information, obtains the second required power of the fuel cell based on the state of charge (SOC) value of the power battery, the state of charge (SOC) limit value of the power battery, the first required power of the fuel cell vehicle and the driving information of the fuel cell vehicle, obtains a protection strategy for the fuel cell, corrects the second required power according to the protection strategy to obtain the target power of the fuel cell, determines the start-stop state of the fuel cell to be the start state, and controls the fuel cell to output the target power. The present application improves the service life of the fuel cell and the power battery by obtaining the target power of the fuel cell and controlling the fuel cell to output the target power, achieves the optimal performance of the hybrid system, and avoids the risk of battery overcharging.

[0070] The specific process of determining the start and stop status of the fuel cell proposed in this application is explained below.

[0071] As a possible implementation, Figure 2 As shown, based on the above embodiment, the specific process of determining the start and stop state of the fuel cell includes the following steps:

[0072] S201. Obtain an operating mode of a fuel cell vehicle.

[0073] Optionally, the operation mode of the fuel cell vehicle can be a hybrid mode or a pure electric mode.

[0074] S202: Determine the start / stop state of the fuel cell according to the operation mode and the state of charge (SOC) value.

[0075] In an embodiment of the present application, after the operating mode of the fuel cell vehicle is acquired, the start / stop state of the fuel cell can be determined.

[0076] Optionally, in response to the operating mode being the hybrid mode, if the state of charge SOC value is lower than the set first SOC threshold, the start-stop state of the fuel cell is determined to be the start state, that is: when SOC<SOC_1, the start-stop state of the fuel cell is the start state, where SOC_1 is the first SOC threshold, and the first SOC threshold can be set to 60%.

[0077] Optionally, in response to the operating mode being the hybrid mode, if the state of charge SOC value is higher than the set second SOC threshold, the start-stop state of the fuel cell is determined to be the shutdown state, that is: when SOC>SOC_2, the start-stop state of the fuel cell is the shutdown state, where SOC_2 is the second SOC threshold, and the second SOC threshold can be set to 70%.

[0078] Optionally, in response to the operating mode being the pure electric mode, if the state of charge SOC value is lower than the difference between the current state of charge SOC value and the set third SOC threshold, the start-stop state of the fuel cell is determined to be the start state, that is: when the vehicle operating mode is switched from the hybrid mode to the pure electric mode, the current state of charge SOC value is obtained, SOC<SOC_3-SOC_4, and the start-stop state of the fuel cell is determined to be the start state (forced power preservation), that is, the fuel cell is forced to start to prevent the power battery from running out of power, wherein SOC_3 is the current state of charge SOC value, SOC_4 is the third SOC threshold, and the third SOC threshold can be set to 10%.

[0079] Optionally, in response to the operating mode being the pure electric mode, if the number of switching times of the operating mode reaches a switching number threshold within a preset time, it is determined that the start-stop state of the fuel cell is the shutdown state.

[0080] For example, if the hybrid / pure electric switch is switched twice in succession within a preset time (3s), the start / stop state of the fuel cell is determined to be the shutdown state (forced power conservation is turned off), until it is switched back to hybrid mode or the power is turned off, the start / stop state of the fuel cell is determined to be the start state (forced power conservation).

[0081] The control method for a fuel cell vehicle provided in the present application obtains the operating mode of the fuel cell vehicle and determines the start and stop status of the fuel cell according to the operating mode and the state of charge (SOC) value. This method can accurately determine the start and stop status of the fuel cell. At the same time, by adding a forced power preservation function, it avoids the risk of battery depletion caused by the fuel cell vehicle's operating mode being switched to pure electric mode and forgetting to switch back to hybrid mode.

[0082] The following is an explanation of the specific process of obtaining the first required power of the fuel cell vehicle based on the output power of the fuel cell and the output power of the power battery proposed in this application.

[0083] As a possible implementation, Figure 3 As shown, based on the above embodiment, the specific process of obtaining the first required power of the fuel cell vehicle according to the output power of the fuel cell and the output power of the power battery in the above step S101 includes the following steps:

[0084] S301 . Within a target preset time, obtain the sum of the output power of the fuel cell and the output power of the power battery to obtain the output power of the fuel cell vehicle.

[0085] For example, the target preset time can be set to 5 minutes, and the sum of the output power of the fuel cell and the output power of the power battery can be obtained to obtain the output power of the fuel cell vehicle, that is, the output power of the fuel cell vehicle is .

[0086] S302 : Obtain the quotient of the output power of the fuel cell vehicle and the target preset time to obtain a first required power.

[0087] For example, the following formula can be used to obtain the first required power: :

[0088]

[0089] in, The first required power, Set a time for your goal, is the output current of the fuel cell, is the output voltage of the fuel cell, is the output current of the power battery, is the output voltage of the power battery.

[0090] The specific process of obtaining driving information of a fuel cell vehicle proposed in this application is explained below.

[0091] As a possible implementation, Figure 4 As shown, based on the above embodiment, the specific process of obtaining the driving information of the fuel cell vehicle in the above step S102 includes the following steps:

[0092] S401. Integrate the Internet of Vehicles information to determine driving road information, where the driving road information includes expressways, national highways, and rural roads.

[0093] S402 : Acquire driving mode information based on the operating state of the fuel cell vehicle and driving road information.

[0094] It should be noted that when the driving road information is different, the driving mode information is also different.

[0095] As a possible implementation, Figure 5 As shown, based on the above embodiment, the specific process of obtaining driving mode information according to the operating state and driving road information of the fuel cell vehicle in step S402 includes the following steps:

[0096] S501. In response to the driving road information being a highway, query a pre-established first mapping table of vehicle speed, accelerator pedal change rate, and acceleration coefficient of a fuel cell vehicle based on the current vehicle speed and accelerator pedal change rate to obtain the acceleration coefficient of the fuel cell vehicle.

[0097] For example, according to the current vehicle speed and accelerator pedal change rate, the acceleration coefficient is determined by querying a pre-established first mapping table of vehicle speed, accelerator pedal change rate and acceleration coefficient for fuel cell vehicles, as shown in Table 1.

[0098] Table 1

[0099]

[0100] S502 : According to the current vehicle speed and brake pedal change rate, query a pre-established second mapping table of vehicle speed and brake pedal change rate and deceleration coefficient of the fuel cell vehicle to obtain the deceleration coefficient of the fuel cell vehicle.

[0101] For example, according to the current vehicle speed and brake pedal change rate, the deceleration coefficient is determined by querying a pre-established second mapping table of vehicle speed and brake pedal change rate and deceleration coefficient for fuel cell vehicles, as shown in Table 2.

[0102] Table 2

[0103]

[0104] S503: According to the acceleration coefficient and the deceleration coefficient, query a pre-established third mapping table of the acceleration coefficient and the deceleration coefficient and the driving mode information to determine the driving mode information of the fuel cell vehicle, wherein the driving mode information includes the acceleration mode, the deceleration mode and the cruise mode.

[0105] For example, the third mapping table of acceleration coefficient and deceleration coefficient and driving mode information is shown in Table 3, where 0 is cruise mode, 1 is acceleration mode, 2 is deceleration mode, and when a deceleration coefficient exists, it is deceleration mode. According to the acceleration coefficient and deceleration coefficient, the driving mode information of the fuel cell vehicle is determined by querying the third mapping table.

[0106] Table 3

[0107]

[0108] As a possible implementation, Figure 6 As shown, based on the above embodiment, the specific process of obtaining driving mode information according to the operating state and driving road information of the fuel cell vehicle in step S402 includes the following steps:

[0109] S601. In response to the driving road information being a national highway, based on the current vehicle speed and traffic light information, query a pre-established fourth mapping table of vehicle speed and traffic light information and driving mode information of the fuel cell vehicle to determine the driving mode information of the fuel cell vehicle, wherein the driving mode information includes a pre-parking mode and a non-pre-parking mode.

[0110] For example, the fourth mapping table of the vehicle speed and traffic light information and the driving mode information of the fuel cell vehicle is shown in Table 4, where 1 is a green light, 2 is a yellow light, 3 is a red light, 4 is a non-pre-parking mode, and 5 is a pre-parking mode. According to the current vehicle speed and traffic light information, the driving mode information of the fuel cell vehicle is determined by querying the fourth mapping table.

[0111] Table 4

[0112]

[0113] Optionally, when the driving road information is a rural road, there is no need to judge the driving information of the fuel cell vehicle.

[0114] The control method for a fuel cell vehicle provided in the present application determines driving road information by integrating vehicle network information, wherein the driving road information includes expressways, national highways, and rural roads. Driving mode information is obtained based on the operating status of the fuel cell vehicle and the driving road information. By obtaining the driving mode information and driving road information, a foundation is laid for the subsequent accurate determination of the target power of the fuel cell.

[0115] The specific process of determining the target power of the fuel cell proposed in this application is explained below.

[0116] S701 : Acquire a maximum state of charge (SOC) threshold and a minimum state of charge (SOC) threshold of a power battery corresponding to driving information.

[0117] For example, the maximum SOC threshold of the power battery's state of charge is SOC_max, and the minimum SOC threshold is SOC_min. Among them, the maximum SOC threshold of the state of charge corresponding to the expressway is SOC_max1, and the minimum SOC threshold of the state of charge is SOC_min1, and the corresponding state of charge interval is [SOC_min1, SOC_max1]; the maximum SOC threshold of the state of charge corresponding to the national highway (urban area) is SOC_max2, and the minimum SOC threshold of the state of charge is SOC_min2, and the corresponding state of charge interval is [SOC_min2, SOC_max2]; the maximum SOC threshold of the state of charge corresponding to the rural area is SOC_max3, and the minimum SOC threshold of the state of charge is SOC_min3, and the corresponding state of charge interval is [SOC_min3, SOC_max3].

[0118] S702 : Determine a second required power of the fuel cell according to the state of charge (SOC) value, the first required power, driving information, the SOC limit value, the SOC maximum threshold value, and the SOC minimum threshold value.

[0119] It should be noted that the state of charge (SOC) limit values ​​corresponding to different driving information are also different.

[0120] For example, the upper limit value of the state of charge SOC is SOC_Hi, and the lower limit value of the state of charge SOC is SOC_Lo. Among them, the lower limit value of the state of charge SOC for highways is SOC_Lo1, and the upper limit value is SOC_Hi1; the lower limit value of the state of charge SOC for national highways (urban areas) is SOC_Lo2, and the upper limit value is SOC_Hi2; the lower limit value of the state of charge SOC for rural roads is SOC_Lo3, and the upper limit value is SOC_Hi3.

[0121] Optionally, in response to the state of charge (SOC) value being within a first interval, the second required power is determined to be the sum of the first required power and the compensation power, wherein the first interval consists of a state of charge (SOC) minimum threshold and a state of charge (SOC) upper limit value.

[0122] Optionally, when attempting to obtain the compensation power, a pre-established fifth mapping table between the state of charge SOC value and the compensation power is queried according to the state of charge SOC value, as shown in Table 5, to determine the compensation power.

[0123] Table 5

[0124] Current SOC 0 10 20 30 40 50 60 70 80 90 100 Compensation value 30 30 30 20 20 10 10 5 0 0 0

[0125] For example, when the state of charge (SOC) value is within the first interval (SOC_min, SOC_Hi), the second required power is determined to be the sum of the first required power and the compensation power, that is: = + ,in, is the second required power, The first required power, To compensate power.

[0126] Optionally, in response to the state of charge (SOC) value being within a second interval, the second required power is determined to be a preset power, wherein the second interval consists of a fourth SOC threshold, a fifth SOC threshold, a state of charge (SOC) minimum threshold, and a state of charge (SOC) lower limit value.

[0127] For example, when the second interval is composed of the fifth SOC threshold and the minimum state of charge (SOC) threshold, that is, the second interval is (SOC_5, SOC_min], when the SOC value is within the second interval, the second required power is determined to be the first preset power P_1; when the second interval is composed of the fifth SOC threshold and the fourth SOC threshold, that is, the second interval is (SOC_4, SOC_5], when the SOC value is within the second interval, the second required power is determined to be the second preset power P_2; when the second interval is composed of the lower limit value of the SOC and the fourth SOC threshold, that is, the second interval is (SOC_Lo, SOC_4], when the SOC value is within the second interval, the second required power is determined to be the third preset power P_3.

[0128] It should be noted that the present application does not limit the setting of the preset power, which can be set according to the actual situation. <000033​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​It should be noted that the excess power on national highways (urban areas) can be calculated based on the total power of the non-working vehicle electrical accessories. , wherein the vehicle accessories can be air conditioners, heaters, air compressors, etc.

[0134] For example, the following formula can be used to calculate the over-limit power on national highways (urban areas): :

[0135] P_5=(P_maxac-P_ac)+(P_maxptc-P_ptc)+P_aircom

[0136] Among them, P_5 is the over-limit power of national highway (urban area), P_maxac is the maximum power of the air conditioner, P_ac is the current air conditioner operating power, P_maxptc is the maximum PTC power of the heater, P_ptc is the current PTC power of the heater, and P_aircom is the air compressor power.

[0137] Optionally, in response to the state of charge (SOC) value being greater than an upper limit value of the state of charge (SOC), the second required power is determined to be a difference between the first required power and a preset power.

[0138] For example, when the state of charge (SOC) value is greater than the upper limit of the state of charge (SOC), that is, SOC>SOC_Hi, the second required power is determined to be the difference between the first required power and the preset power, that is: ,in, is the second required power, The first required power, The preset power.

[0139] Optionally, in response to the current speed of the fuel cell vehicle being lower than a preset speed within the second preset time, the second required power is determined to be the minimum operating power of the fuel cell.

[0140] For example, when the preset vehicle speed is V1 and the second preset time is T1, the current vehicle speed of the fuel cell vehicle is lower than the preset vehicle speed and the duration is T1, the intermediate value of the fuel cell required power is the minimum fuel cell operating power.

[0141] The control method of the fuel cell vehicle provided by the present application determines the second demand power of the fuel cell by obtaining the maximum state of charge (SOC) threshold and the minimum state of charge (SOC) threshold corresponding to the driving information, and based on the SOC value, the first demand power, the driving information, the SOC limit value, the maximum SOC threshold, and the minimum SOC threshold. The present application can obtain the second demand power under different driving information, can more accurately judge the running state of the vehicle, adjust the output power of the fuel cell to ensure better following the demand of the whole vehicle, maintain the SOC value within a reasonable range, and lay a foundation for more accurately determining the target power of the fuel cell in the future.

[0142] The following explains the specific process of correcting the second demand power according to the protection strategy to obtain the target power of the fuel cell proposed by the present application.

[0143] It should be noted that the present application does not limit the specific manner of the protection strategy for the fuel cell, and it can be set according to the actual situation.

[0144] For example, the protection strategy of the fuel cell can be a power protection strategy and an active discharge protection strategy.

[0145] Optionally, in response to the protection strategy being a power protection strategy, obtain the allowable operating rated power of the fuel cell, and determine the target power of the fuel cell from the allowable operating rated power and the second demand power.

[0146] For example, the allowable operating rated power of the fuel cell can be calculated based on the sustainable charging current limit value of the power battery and the voltage of the power battery, and the smaller value between the intermediate value of the fuel cell demand power and the allowable operating rated power value is selected as the target power of the fuel cell.

[0147] It should be noted that when the output power of the fuel cell is greater than the rated charging power of the power battery, and when the SOC value is less than the lower limit of the SOC, that is, SOC < SOC_Lo, the target power is not corrected by the allowable operating rated power.

[0148] Optionally, in response to the protection strategy being an active discharge protection strategy, obtain the difference between the current power of the fuel cell and the allowable continuous charging power of the power battery, and control the electrical accessories of the fuel cell vehicle according to the magnitude of the difference and the driving information to determine the target power of the fuel cell.

[0149] For example, when the driving information is deceleration mode or pre-stop mode, the difference between the current power of the fuel cell and the allowable continuous charging power of the power battery is obtained, and the operation of the vehicle's electrical accessories, such as air conditioning, heater and air compressor, is actively controlled to avoid battery overcharging in deceleration mode or pre-stop mode.

[0150] Furthermore, after the target power of the fuel cell is acquired, when the start / stop state of the fuel cell is the start state, the fuel cell is controlled to output the target power.

[0151] It should be noted that the protection strategy can also be a braking recovery protection strategy, which selects the target torque from the braking demand torque value and the maximum braking torque to prevent the instantaneous current during braking from exceeding the instantaneous charging current limit of the power battery.

[0152] Optionally, in response to the protection strategy being a braking recovery protection strategy, a braking demand torque value and a maximum braking torque value of the fuel cell vehicle are acquired, and a target torque is selected from the braking demand torque value and the maximum braking torque value.

[0153] For example, when the braking demand torque value is less than the maximum braking torque value, the braking demand torque value is used as the target torque Trq; when the maximum braking torque value is less than the braking demand torque value, the maximum braking torque value is used as the target torque Trq.

[0154] Optionally, when attempting to obtain the maximum braking torque of a fuel cell vehicle, the instantaneous braking recovery power limit value P_chrgmax of the power battery is determined according to the product of the voltage of the power battery and the instantaneous charging current limit of the power battery, and the braking recovery power limit value P_max is determined according to the difference between the braking recovery power limit value P_chrgmax of the power battery and the current output power of the fuel cell. The maximum braking torque , where n is the motor speed, is the braking regenerative power limit value, is the maximum braking torque.

[0155] Optionally, when attempting to obtain the braking torque requirement value of the fuel cell vehicle, a pre-established sixth mapping table between vehicle speed and brake pedal opening can be queried according to the current vehicle speed and brake pedal opening to determine the braking torque requirement value.

[0156] Table 6

[0157]

[0158] The control method for a fuel cell vehicle provided in this application improves the service life of the fuel cell and the power battery by obtaining the target power of the fuel cell and controlling the fuel cell to output the target power, achieves the optimal performance of the hybrid system, and avoids the risk of battery overcharging.

[0159] Figure 8 It is a structural schematic diagram of a control device for a fuel cell vehicle according to an embodiment disclosed in the present application.

[0160] like Figure 8 As shown, the control device 100 of the fuel cell vehicle includes: a first acquisition module 11, a second acquisition module 12, a third acquisition module 13, a correction module 14 and a control module 15.

[0161] A first acquisition module 11 is configured to acquire the output power of the fuel cell and the output power of the power battery, and acquire a first required power of the fuel cell vehicle based on the output power of the fuel cell and the output power of the power battery;

[0162] a second acquisition module 12 for acquiring driving information of the fuel cell vehicle, wherein the driving information includes driving road information and driving mode information;

[0163] a third acquisition module 13, configured to acquire a second required power of the fuel cell according to the state of charge (SOC) value of the power battery, the SOC limit value of the power battery, the first required power of the fuel cell vehicle, and driving information of the fuel cell vehicle;

[0164] a correction module 14, configured to obtain a protection strategy for the fuel cell, and correct the second required power according to the protection strategy to obtain a target power of the fuel cell;

[0165] The control module 15 is configured to determine that the start / stop state of the fuel cell is the start state, and control the fuel cell to output a target power.

[0166] According to one embodiment of the present application, the device 100 is further used to: obtain the operating mode of the fuel cell vehicle; and determine the start / stop state of the fuel cell based on the operating mode and the state of charge (SOC) value.

[0167] According to one embodiment of the present application, the device 100 is further used to: in response to the operating mode being a hybrid mode, if the state of charge SOC value is lower than a set first SOC threshold, determine that the start-stop state of the fuel cell is a start state; if the state of charge SOC value is higher than a set second SOC threshold, determine that the start-stop state of the fuel cell is a stop state; or, in response to the operating mode being a pure electric mode, if the state of charge SOC value is lower than the difference between the current state of charge SOC value and a set third SOC threshold, determine that the start-stop state of the fuel cell is a start state; if within a preset time, the number of switching times of the operating mode reaches a switching number threshold, determine that the start-stop state of the fuel cell is a stop state.

[0168] According to one embodiment of the present application, the first acquisition module 11 is further used to: obtain the sum of the output power of the fuel cell and the output power of the power battery within the target preset time to obtain the output power of the fuel cell vehicle; obtain the quotient of the output power of the fuel cell vehicle and the target preset time to obtain the first required power.

[0169] According to one embodiment of the present application, the second acquisition module 12 is further used to: integrate the Internet of Vehicles information to determine the driving road information, wherein the driving road information includes expressways, national highways and rural roads; and obtain the driving mode information based on the operating status of the fuel cell vehicle and the driving road information.

[0170] According to one embodiment of the present application, the second acquisition module 12 is further used to: in response to the driving road information being a highway, query a pre-established first mapping table of the vehicle speed and accelerator pedal change rate and the acceleration coefficient of the fuel cell vehicle according to the current vehicle speed and accelerator pedal change rate to obtain the acceleration coefficient of the fuel cell vehicle; query a pre-established second mapping table of the vehicle speed and brake pedal change rate and the deceleration coefficient of the fuel cell vehicle according to the current vehicle speed and brake pedal change rate to obtain the deceleration coefficient of the fuel cell vehicle; query a pre-established third mapping table of the acceleration coefficient and the deceleration coefficient and the driving mode information according to the acceleration coefficient and the deceleration coefficient to determine the driving mode information of the fuel cell vehicle, wherein the driving mode information includes acceleration mode, deceleration mode and cruise mode.

[0171] According to one embodiment of the present application, the second acquisition module 12 is further used to: in response to the driving road information being a national highway, query a pre-established fourth mapping table of the vehicle speed and traffic light information of the fuel cell vehicle and the driving mode information according to the current vehicle speed and traffic light information, so as to determine the driving mode information of the fuel cell vehicle, wherein the driving mode information includes a pre-parking mode and a non-pre-parking mode.

[0172] According to one embodiment of the present application, the third acquisition module 13 is further used to: obtain the maximum state of charge (SOC) threshold and the minimum state of charge (SOC) threshold of the power battery corresponding to the driving information; and determine the second required power of the fuel cell based on the state of charge (SOC) value, the first required power, the driving information, the state of charge (SOC) limit value, the maximum state of charge (SOC) threshold and the minimum state of charge (SOC) threshold.

[0173] According to one embodiment of the present application, the third acquisition module 13 is further used to: in response to the state of charge (SOC) value being within a first interval, determine the second required power as the sum of the first required power and the compensation power, wherein the first interval is composed of the state of charge (SOC) minimum threshold and the state of charge (SOC) upper limit; or, in response to the state of charge (SOC) value being within a second interval, determine the second required power as a preset power, wherein the second interval is composed of a fourth SOC threshold, a fifth SOC threshold, the state of charge (SOC) minimum threshold, and the state of charge (SOC) lower limit; or, in response to the state of charge (SOC) value being less than the state of charge (SOC) lower limit, determine the second required power as the sum of the first required power and the excess power; or, in response to the state of charge (SOC) value being greater than the state of charge (SOC) upper limit, determine the second required power as the difference between the first required power and the preset power; or, in response to the current vehicle speed of the fuel cell vehicle being less than the preset vehicle speed within a second preset time, determine the second required power as the minimum fuel cell operating power.

[0174] According to one embodiment of the present application, the correction module 14 is further used to: in response to the protection strategy being a power protection strategy, obtain the allowable operating rated power of the fuel cell, and determine the target power of the fuel cell from the allowable operating rated power and the second required power; or, in response to the protection strategy being an active discharge protection strategy, obtain the difference between the current power of the fuel cell and the allowable continuous charging power of the power battery, and control the electrical accessories of the fuel cell vehicle according to the size of the difference and the driving information to determine the target power of the fuel cell.

[0175] According to one embodiment of the present application, the device 100 is also used to: in response to the protection strategy being a braking recovery protection strategy, obtain the braking requirement torque value and the maximum braking torque of the fuel cell vehicle, and select the target torque from the braking requirement torque value and the maximum braking torque.

[0176] An embodiment of the present application provides a control device for a fuel cell vehicle, which obtains the output power of the fuel cell and the output power of the power battery, obtains a first required power of the fuel cell vehicle based on the output power of the fuel cell and the output power of the power battery, obtains driving information of the fuel cell vehicle, wherein the driving information includes driving road information and driving mode information, obtains a second required power of the fuel cell based on the state of charge (SOC) value of the power battery, the state of charge (SOC) limit value of the power battery, the first required power of the fuel cell vehicle and the driving information of the fuel cell vehicle, obtains a protection strategy for the fuel cell, corrects the second required power according to the protection strategy to obtain a target power of the fuel cell, determines the start-stop state of the fuel cell to be a start state, and controls the fuel cell to output the target power. The present application improves the service life of the fuel cell and the power battery by obtaining the target power of the fuel cell and controlling the fuel cell to output the target power, achieves the optimal performance of the hybrid system, and avoids the risk of battery overcharging.

[0177] In order to implement the above embodiment, the present application also proposes a vehicle 1000, such as Figure 9 As shown, the vehicle 1000 includes: the device 100 of the second aspect.

[0178] In order to implement the above embodiment, the present application also proposes an electronic device 2000, such as Figure 10 As shown, it includes a memory 210, a processor 220 and a computer program stored in the memory 210 and executable on the processor 220. When the processor executes the program, the aforementioned fuel cell vehicle control method is implemented.

[0179] In order to implement the above embodiments, the present application also proposes a non-transitory computer-readable storage medium storing computer instructions, which are used to implement the above-mentioned fuel cell vehicle control method when executed by a computer.

[0180] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0181] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0182] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0183] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0184] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0185] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A control method for a fuel cell vehicle, characterized in that: The method comprises: Obtaining the output power of the fuel cell and the output power of the power battery, and obtaining a first required power of the fuel cell vehicle based on the output power of the fuel cell and the output power of the power battery; Acquiring driving information of the fuel cell vehicle, wherein the driving information includes driving road information and driving mode information; Obtaining a second required power of the fuel cell according to a state of charge (SOC) value of a power battery, a state of charge (SOC) limit value of the power battery, a first required power of the fuel cell vehicle, and driving information of the fuel cell vehicle; obtaining a protection strategy for the fuel cell, and correcting the second required power according to the protection strategy to obtain a target power of the fuel cell; determining that the start / stop state of the fuel cell is a start state, and controlling the fuel cell to output a target power; The acquiring the second required power of the fuel cell according to the state of charge (SOC) value of the power battery, the state of charge (SOC) limit value of the power battery, the first required power of the fuel cell vehicle, and the driving information of the fuel cell vehicle includes: Acquire a maximum state of charge (SOC) threshold and a minimum state of charge (SOC) threshold of the power battery corresponding to the driving information; determining a second required power of the fuel cell according to the state of charge (SOC) value, the first required power, the driving information, the state of charge (SOC) limit value, the state of charge (SOC) maximum threshold value, and the state of charge (SOC) minimum threshold value; The determining, according to the state of charge (SOC) value, the first required power, the driving information, the state of charge (SOC) limit value, the state of charge (SOC) maximum threshold value, and the state of charge (SOC) minimum threshold value, comprises: In response to the state of charge (SOC) value being within a first interval, determining the second required power as the sum of the first required power and the compensation power, wherein the first interval is composed of the state of charge (SOC) minimum threshold and the state of charge (SOC) upper limit; or In response to the state of charge (SOC) value being within a second interval, determining that the second required power is a preset power, wherein the second interval is composed of a fourth SOC threshold, a fifth SOC threshold, the state of charge (SOC) minimum threshold, and a state of charge (SOC) lower limit; or In response to the state of charge (SOC) value being less than a lower limit value of the state of charge (SOC), determining the second required power to be the sum of the first required power and an excess power; or In response to the state of charge (SOC) value being greater than an upper limit value of the state of charge (SOC), determining the second required power to be a difference between the first required power and a preset power; or, In response to the fuel cell vehicle running at a current speed lower than a preset speed within a second preset time, the second required power is determined to be a minimum fuel cell operating power value.

2. The method according to claim 1, characterized in that The process of determining the start / stop state of the fuel cell includes: obtaining an operating mode of the fuel cell vehicle; The start / stop state of the fuel cell is determined according to the operation mode and the state of charge (SOC) value.

3. The method according to claim 2, characterized in that The step of determining the start / stop state of the fuel cell according to the operating mode and the state of charge (SOC) value includes: In response to the operating mode being the hybrid mode, if the state of charge (SOC) value is lower than a set first SOC threshold, the start / stop state of the fuel cell is determined to be the start state; if the state of charge (SOC) value is higher than a set second SOC threshold, the start / stop state of the fuel cell is determined to be the stop state; or, In response to the operating mode being the pure electric mode, if the state of charge (SOC) value is lower than the difference between the current state of charge (SOC) value and a set third SOC threshold, the start-stop state of the fuel cell is determined to be the start-up state; if within a preset time, the number of switching times of the operating mode reaches a switching number threshold, the start-stop state of the fuel cell is determined to be the shutdown state.

4. The method according to claim 1, wherein The obtaining, according to the output power of the fuel cell and the output power of the power battery, a first required power of the fuel cell vehicle includes: within a target preset time, obtaining the sum of the output power of the fuel cell and the output power of the power battery to obtain the output power of the fuel cell vehicle; The quotient of the output power of the fuel cell vehicle and the target preset time is obtained to obtain the first required power.

5. The method according to claim 1, wherein The acquiring of driving information of the fuel cell vehicle, wherein the driving information includes driving road information and driving mode information, comprises: fusing the Internet of Vehicles information to determine the driving road information, wherein the driving road information includes expressways, national highways, and rural roads; The driving mode information is acquired according to the operating state of the fuel cell vehicle and the driving road information.

6. The method according to claim 5, characterized in that The acquiring the driving mode information according to the operating state of the fuel cell vehicle and the driving road information includes: In response to the driving road information being a highway, querying a pre-established first mapping table of the vehicle speed, the accelerator pedal change rate, and the acceleration coefficient of the fuel cell vehicle based on the current vehicle speed and the accelerator pedal change rate to obtain the acceleration coefficient of the fuel cell vehicle; According to the current vehicle speed and brake pedal change rate, querying a pre-established second mapping table of the vehicle speed and brake pedal change rate and a deceleration coefficient of the fuel cell vehicle to obtain the deceleration coefficient of the fuel cell vehicle; According to the acceleration coefficient and the deceleration coefficient, a third mapping table of the acceleration coefficient and the deceleration coefficient and the driving mode information is queried to determine the driving mode information of the fuel cell vehicle, wherein the driving mode information includes an acceleration mode, a deceleration mode and a cruise mode.

7. The method according to claim 5, characterized in that The acquiring the driving mode information according to the operating state of the fuel cell vehicle and the driving road information includes: In response to the driving road information being a national highway, based on the current vehicle speed and traffic light information, a fourth mapping table of the vehicle speed and traffic light information of the fuel cell vehicle and the driving mode information is queried in advance to determine the driving mode information of the fuel cell vehicle, wherein the driving mode information includes a pre-parking mode and a non-pre-parking mode.

8. The method according to claim 1, characterized in that The acquiring of a protection strategy for the fuel cell and correcting the second required power according to the protection strategy to acquire a target power of the fuel cell includes: In response to the protection strategy being a power protection strategy, obtaining the allowable operating rated power of the fuel cell, and determining the target power of the fuel cell from the allowable operating rated power and the second required power; or In response to the protection strategy being an active discharge protection strategy, the difference between the current power of the fuel cell and the allowable continuous charging power of the power battery is obtained, and the electrical accessories of the fuel cell vehicle are controlled according to the size of the difference and the driving information to determine the target power of the fuel cell.

9. The method according to claim 1, characterized in that The method further comprises: In response to the protection strategy being a braking recovery protection strategy, a braking demand torque value and a maximum braking torque value of the fuel cell vehicle are acquired, and a target torque is selected from the braking demand torque value and the maximum braking torque value.

10. A control device for a fuel cell vehicle, characterized in that: The device comprises: a first acquisition module, configured to acquire the output power of the fuel cell and the output power of the power battery, and acquire a first required power of the fuel cell vehicle based on the output power of the fuel cell and the output power of the power battery; a second acquisition module, configured to acquire driving information of the fuel cell vehicle, wherein the driving information includes driving road information and driving mode information; a third acquisition module, configured to acquire a second required power of the fuel cell according to a state of charge (SOC) value of the power battery, a state of charge (SOC) limit value of the power battery, the first required power of the fuel cell vehicle, and driving information of the fuel cell vehicle; a correction module, configured to obtain a protection strategy for the fuel cell, and correct the second required power according to the protection strategy to obtain a target power of the fuel cell; a control module, configured to determine that the start / stop state of the fuel cell is a start state, and control the fuel cell to output a target power; The third acquisition module is further configured to: Acquire a maximum state of charge (SOC) threshold and a minimum state of charge (SOC) threshold of the power battery corresponding to the driving information; determining a second required power of the fuel cell according to the state of charge (SOC) value, the first required power, the driving information, the state of charge (SOC) limit value, the state of charge (SOC) maximum threshold value, and the state of charge (SOC) minimum threshold value; The third acquisition module is further configured to: In response to the state of charge (SOC) value being within a first interval, determining the second required power as the sum of the first required power and the compensation power, wherein the first interval is composed of the state of charge (SOC) minimum threshold and the state of charge (SOC) upper limit; or In response to the state of charge (SOC) value being within a second interval, determining that the second required power is a preset power, wherein the second interval is composed of a fourth SOC threshold, a fifth SOC threshold, the state of charge (SOC) minimum threshold, and a state of charge (SOC) lower limit; or In response to the state of charge (SOC) value being less than a lower limit value of the state of charge (SOC), determining the second required power to be the sum of the first required power and an excess power; or In response to the state of charge (SOC) value being greater than an upper limit value of the state of charge (SOC), determining the second required power to be a difference between the first required power and a preset power; or, In response to the fuel cell vehicle running at a current speed lower than a preset speed within a second preset time, the second required power is determined to be a minimum fuel cell operating power value.

11. A vehicle, characterized in that: Comprising the apparatus as claimed in claim 10.

12. An electronic device comprising: at least one processor; as well as communicatively connected to the at least one processor memory; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the method according to any one of claims 1 to 9.

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