Method, system and device for controlling vehicle power device and storage medium

[0045] In order to make the technical solution of the present invention clearer, the control method, system, device, and storage medium of the range-extended fuel cell vehicle power plant of the present invention will be described in further detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention and not to limit the present invention. It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other if there is no conflict.

[0046] Such as figure 1 As shown, the range-extended fuel cell vehicle power plant 100 in the embodiment of the present application includes an energy storage device 101, a battery management device 107, a fuel cell 105, a fuel cell controller 108, a voltage converter 106, a motor controller 103, and a vehicle The controller 109 and the drive motor 104. The energy storage device 101 is connected to the motor controller 103 through the power bus 102, and the motor controller 103 is electrically connected to the driving motor 104 for controlling the operation of the driving motor 104. The driving motor 104 can convert electrical energy into mechanical energy, and the vehicle is driven to travel through the output torque of the driving motor 104. In this embodiment, the energy storage device 101 may be composed of one or two of a lithium ion power battery and a super capacitor. The energy storage device 101 has an external charging interface, so that the energy storage device 101 can be charged through an external power supply. One end of the battery management device 107 is connected to the energy storage device 101, and the other end of the battery management device 107 can be connected to the vehicle controller 109 through the CAN bus 110. The battery management device 107 is used to monitor the power (state of charge), output voltage, output current, and operating temperature of the energy storage device 101, and transmit the above information to the vehicle controller 109, which can store Information such as the state of charge, output voltage, output current, and operating temperature of the energy device 101 controls the operating state of the energy storage device 101.

[0047] The fuel cell 105 is connected to the power bus 102 through the voltage converter 106, that is, the output end of the fuel cell 105 is connected to one end of the voltage converter 106, and the other end of the voltage converter 106 is connected to the energy storage device 101 and the motor controller 103. Common (ie power bus 102). In this embodiment, the fuel cell 105 may be a proton exchange membrane fuel cell, and the fuel cell 105 may include a fuel cell stack, a hydrogen storage and supply mechanism, an air supply mechanism, a cooling mechanism, and so on. One end of the fuel cell controller 108 is connected to the fuel cell 105, and the other end of the fuel cell controller 108 can be connected to the vehicle controller 109 through the CAN bus 110. The fuel cell controller 108 is used to control the operation of the various components of the fuel cell 105, so that the fuel cell 105 works in a proper working state. The voltage converter 106 can also be connected to the vehicle controller 109 via the CAN bus 110 to boost the output voltage of the fuel cell 105. At the same time, the voltage converter 106 can control the fuel according to the vehicle controller 109's requirements. The output power of the battery. In this embodiment, the voltage converter 106 may be a unidirectional DC/DC converter.

[0048] The above-mentioned power plant is equipped with a fuel cell as a range extender, so that the cruising range of the vehicle can reach the same cruising range (300 kilometers to 500 kilometers) as a traditional internal combustion engine vehicle. Compared with traditional pure electric vehicles, it has improved the car's cruising range. At the same time, compared with a full-power fuel cell car, the power of the fuel cell is significantly reduced, thereby reducing the cost of the fuel cell and the vehicle.

[0049] The range-extended fuel cell vehicle power device of the embodiment of the application may at least include the following working modes:

[0050] 1) CD (Charge Depleting, power consumption) mode

[0051] In this mode, the power unit works in pure electric drive mode, the fuel cell 105 is turned off (that is, the output power of the fuel cell 105 is 0), and the energy storage device 101 provides all the energy required for the operation of the vehicle, such as figure 2 Shown. This mode is suitable for situations where the power of the energy storage device 101 is high (for example, when the current state of charge of the energy storage device 101 is greater than or equal to the first preset threshold), the required power of the vehicle is low, or the travel mileage is short under.

[0052] 2) CS (Charge Sustaining, battery retention) mode

[0053] In this mode, the vehicle controller 109 limits the fluctuation of the output power of the fuel cell 105. Specifically, the vehicle controller 109 can control the output power of the fuel cell 105 to be the average value of the total power demand of the vehicle. At this time, the energy storage device The output power/input power of 101 is the difference between the current total power demand of the entire vehicle and the average value of the total demand power of the entire vehicle. Optionally, when the average total power demand of the entire vehicle is greater than the current total power demand of the entire vehicle, the fuel cell 105 charges the energy storage device 101. When the average total power demand of the entire vehicle is less than the current total power demand of the entire vehicle, the energy storage device 101 and the fuel cell 105 discharge simultaneously. In this mode, the energy storage device 101 can provide dynamic power demand, that is, the energy storage device 101 provides power output during acceleration and energy recovery during deceleration or braking. It should be clear that the current total power demand of the entire vehicle can be calculated according to the motor torque and speed, which is essentially an instantaneous demand power. The average value of the required total power of the entire vehicle can be calculated based on multiple instantaneous required powers, and it can be a geometric average or arithmetic average of multiple instantaneous total required powers. Such as image 3 Shown. This working mode is suitable for the case where the energy storage device 101 has low power, the required power of the whole vehicle is high and the travel mileage is long, and it can provide sufficient cruising range.

[0054] 3) Blended mode

[0055] This mode is a combination of the above-mentioned CD mode and CS mode, and has a certain degree of adjustment flexibility. Optionally, the fuel cell 105 can be turned on when the vehicle is started, and the output power of the fuel cell 105 is a part of the average total power demand of the vehicle (that is, the output power of the fuel cell 105 is less than the average total power demand of the vehicle Value), such as the preset ratio (40% to 80%) of the output power of the fuel cell to the average value of the total power demand of the entire vehicle (not specifically limited here). The other part of the total required power of the vehicle is provided by the energy storage device 101, for example, the output power of the energy storage device 101 is equal to the difference between the total required power of the vehicle and the output power of the fuel cell. At the same time, the energy storage device 101 can also provide the dynamic power of the required total power of the vehicle. Such as Figure 5 As shown, in the Blended mode, the state of charge of the energy storage device 101 is in a descending state, but the descending speed is slower than that in the CD mode. At the same time, the hydrogen consumption is in an ascending state and the rising speed is slower than the CS mode.

[0056] Optionally, in other embodiments, the fuel cell 105 can be turned on when the state of charge of the energy storage device is consumed to a certain extent. Specifically, when the entire vehicle is started, the energy storage device 101 first provides the current total power demand of the entire vehicle. At this time, the output power of the fuel cell 105 is 0, that is, the entire vehicle runs in the CD mode for a period of time. When the energy consumption of the energy storage device reaches a certain level (for example, the state of charge of the energy storage device 101 is less than or equal to the first preset threshold), the output power of the fuel cell is controlled to be less than the average total power demand of the vehicle, where, The output power of the fuel cell is greater than zero, thereby controlling the vehicle to switch to the Blended mode. At this time, the output power/input power of the energy storage device 101 is the difference between the current total power demand of the entire vehicle and the output power of the fuel cell. When the output power of the fuel cell is the average total power demand of the entire vehicle, the output power/input power of the energy storage device 101 is the difference between the current total power demand of the entire vehicle and the average total power demand of the entire vehicle .

[0057] 4) Parking charging mode

[0058] When the vehicle is parked, if the power of the energy storage device 101 is low, the fuel cell 105 can continue to charge the energy storage device 101. Such as Figure 4 As shown, the energy at this time flows from the fuel cell 105 to the energy storage device 101, and the DC/DC converter can control the charging power. Of course, an external power source (charging station or household charging pile) can also be used to charge the energy storage device 101 through an external charging interface. Further, the power plant of the automobile can also realize energy supplement by supplementing hydrogen to the fuel cell 105, and the hydrogen can be supplemented by filling hydrogen through the hydrogen refueling station.

[0059] The above-mentioned modes can be switched in real time according to actual driving conditions and the state of charge of the energy storage device. For example, it is possible to switch from the CD mode to the CS mode or the Blended mode, or from the Blended mode to the CS mode, etc. The specific control method can be referred to the description below.

[0060] Such as Image 6 As shown, the control method of the range-extended fuel cell vehicle power unit of the embodiment of the present application is used in the above-mentioned range-extended fuel cell vehicle power unit. The power unit of the energy storage device can be determined according to the output power of the fuel cell, that is, the total power demand of the entire vehicle. Output power, so that the energy storage device is in a passive output state, so that the energy storage device can be in a working state of shallow charging and shallow discharge, which extends the life of the energy storage device compared with the traditional deep charging and deep discharge state. Specifically, the above method includes the following steps:

[0061] S100. Obtain the current total power demand of the vehicle and the current state of charge of the energy storage device 101; specifically, the output torque of the drive motor 104 can be obtained according to the driver's operation (such as the operation of the driver stepping on a pedal), and according to the drive The output torque of the electric motor 104 determines the current total power demand of the entire vehicle. Among them, the state of charge of the energy storage device 101 is the ratio of the remaining power to the total power, which is usually expressed as a percentage. When the current state of charge of the energy storage device 101 is 1, it may indicate that the energy storage device 101 is in a fully charged state. When the current state of charge of the energy storage device 101 is 0, it can indicate that the energy storage device 101 is in a fully discharged state, that is, the energy of the energy storage device 101 is completely exhausted.

[0062] S200. Set the output power of the fuel cell 105 as the target output power according to the current total power demand of the vehicle and the current state of charge of the energy storage device 101; in this embodiment, the target output power of the fuel cell 105 may be a fixed value ( For example, the target output power of the fuel cell can be 0), and the target output power of the fuel cell 105 can also dynamically change around the preset operating point. At this time, the output power of the fuel cell 105 is not a constant value, but is dynamic within a certain range Adjustment, slight fluctuation. In this way, the fuel cell 105 can be operated at a relatively stable operating point, so that the fuel cell 105 can be prevented from violently changing the load dynamically, and the service life of the fuel cell can be prolonged.

[0063] S300: Determine the output power of the energy storage device 101 according to the target output power of the fuel cell 105 and the total power demand of the entire vehicle. Specifically, the output power of the energy storage device 101 is equal to the difference between the current total power demand of the entire vehicle and the target output power output by the fuel cell. In this embodiment, the output power of the energy storage device is obtained through the target output power of the fuel cell 105 and the total power demand of the entire vehicle, so that the energy storage device 101 is in a passive output state, and the service life of the energy storage device 101 can be prolonged.

[0064] Optionally, before the whole vehicle runs, the state of charge of the energy storage device 101 can be detected first, and the current state of charge of the energy storage device 101 can be obtained, so as to select an appropriate operating mode according to the current state of charge of the energy storage device 101 To avoid deep charging and deep discharging of the energy storage device. Such as Figure 7 As shown, the above step S200 further includes the following steps:

[0065] S210. Determine whether the current state of charge of the energy storage device is greater than or equal to a first preset threshold; specifically, the value range of the first preset threshold may be 40% to 80%, which is not specifically limited here.

[0066] When the current state of charge of the energy storage device 101 is greater than or equal to the first preset threshold, for example, the first preset threshold is 80%, and the current state of charge of the energy storage device is 90%, and the travel mileage at this time If it is shorter and the total required power of the entire vehicle is low, step S220 can be executed to control the output power of the fuel cell to 0, and control the energy storage device 101 to turn on and output the current total required power of the entire vehicle. That is, the energy storage device 101 alone supplies power to the entire vehicle, and at this time, the entire vehicle runs in the CD mode. This mode is suitable for situations where the energy storage device 101 has a high power level, the required power of the entire vehicle is low, or the travel mileage is short. Such as figure 2 As shown, the energy in the power plant flows from the energy storage device 101 to the motor controller 103 and the motor; when braking energy is recovered, the energy flows from the motor to the motor controller 103 and the energy storage device 101.

[0067] Optionally, when the current state of charge of the energy storage device 101 is greater than or equal to the first preset threshold, the whole vehicle can also be controlled to run in the CS mode or the Blended mode. For the specific control process, please refer to the description below.

[0068] When the current state of charge of the energy storage device 101 is less than the first preset threshold, in order to avoid the deep charge and deep discharge of the energy storage device 101, the entire vehicle can be controlled to work in the CS mode or the Blended mode. Specifically, when the current state of charge of the energy storage device 101 is less than the first preset threshold, the following steps may be performed:

[0069] S230. Obtain the average total power demand of the entire vehicle in real time; specifically, since the current total current demand power of the vehicle is in a state of change during the continuous operation of the vehicle, the average total power demand of the entire vehicle is also in a state of change . In other words, at this time, the target output power of the fuel cell is not a constant value, but is dynamically adjusted within a certain range with slight fluctuations. Therefore, the total required power of the entire vehicle can be calculated by calculating the total required power of the entire vehicle over a period of time. average value. That is, the average value of the total power demand of the whole vehicle can be calculated based on multiple instantaneous demand powers, and it can be the geometric average or the arithmetic average value of the multiple instantaneous demand powers.

[0070] S240. Control the target output power output by the fuel cell to be less than or equal to the average total power demand of the entire vehicle, where the target output power output by the fuel cell is greater than zero. Specifically, when the current state of charge of the energy storage device 101 is less than the first preset threshold, the fuel cell 105 and the energy storage device 101 can cooperate to provide the required total power of the vehicle. Among them, the total required power of the entire vehicle is equal to the sum of the target output power output by the fuel cell 105 and the output power of the energy storage device 101. Optionally, when the target output power output by the fuel cell 105 is less than the average total power demand of the entire vehicle, that is, the target output power of the fuel cell 105 is a part of the average total power demand of the entire vehicle. At this time, the entire vehicle is running at In Blended mode. When the target output power output by the fuel cell 105 is equal to the average total power demand of the entire vehicle, the entire vehicle runs in the CS mode.

[0071] In one embodiment, such as Figure 8 As shown, when the current state of charge of the energy storage device is less than the first preset threshold, the above step S240 further includes the following steps:

[0072] S241. Determine whether the current state of charge of the energy storage device is greater than or equal to a second preset threshold, where the value range of the second preset threshold may be 20%-40%.

[0073] When the current state of charge of the energy storage device 101 is greater than or equal to the second preset threshold, and the current state of charge of the energy storage device 101 is less than the first preset threshold, step S242 may be executed to control the target output of the fuel cell output The power is less than the average value of the total power required by the vehicle, and the target output power of the fuel cell output is greater than zero. At this time, the fuel cell 101 provides a part of the average value of the total required power of the entire vehicle, and the output power of the energy storage device 101 is the difference between the current demand power of the entire vehicle and the target output power of the fuel cell 105, that is, the entire vehicle is in the Blended mode at this time under. For example, the output power of the fuel cell 105 accounts for the preset ratio (40% to 80%, which is not specifically limited here) of the average value of the total power demand of the vehicle, and the other part of the current total power demand of the vehicle is provided by the energy storage device 101 provides, that is, the output power of the energy storage device 101 is the difference between the current total power demand of the entire vehicle and the output power of the fuel cell. At the same time, the energy storage device 101 can also provide the dynamic power of the required total power of the vehicle.

[0074] The energy flow direction in this mode can be seen image 3 , But the difference from the above CS mode is that in this mode, the output power of the fuel cell 105 is small, and the average power of the energy storage device 101 is not zero. Such as Figure 5 As shown, in the Blended mode, the state of charge of the energy storage device 101 is in a descending state, but the descending speed is slower than that in the CD mode. At the same time, the hydrogen consumption is in an ascending state and the rising speed is slower than the CS mode.

[0075] Further, if the current state of charge of the energy storage device is less than the second preset threshold, the above step S240 further includes the following steps:

[0076] S243: Determine whether the current state of charge of the energy storage device is greater than or equal to a third preset threshold, where the value range of the third preset threshold may be less than or equal to 10%.

[0077] If the current state of charge of the energy storage device 101 is greater than or equal to the third preset threshold, and the current state of charge of the energy storage device 101 is less than the second preset threshold, step S244 may be executed to control the target output of the fuel cell 105 The power is equal to the average value of the total power required by the vehicle. At this time, the vehicle can run in the CS mode, the vehicle controller 109 limits the fluctuation of the output power of the fuel cell 105, and the energy storage device 101 provides dynamic power demand, that is, the energy storage device 101 provides power output during acceleration and deceleration Or energy recovery during braking, such as image 3 Shown. This working mode is suitable when the energy storage device 101 has a low power level (the state of charge is less than or equal to the first preset threshold), the required power of the vehicle is high, and the mileage is long, and it can provide sufficient cruising range .

[0078] Specifically, if the average total power demand of the entire vehicle is greater than the current total power demand of the entire vehicle, the target output power output by the fuel cell 105 is greater than the current total power demand of the entire vehicle. At this time, the fuel cell 105 can not only provide the entire vehicle The total required power required for operation can also be charged to the energy storage device 101. If the average total required power of the entire vehicle is less than the current total required power of the entire vehicle, the fuel cell 105 and the energy storage device need to cooperate to provide the total required power required for the operation of the entire vehicle, and the energy storage device 101 is in a discharge state at this time. That is, when the whole vehicle is running in the CS mode, the energy storage device 101 is sometimes in a charged state and sometimes in a discharged state, so that the state of charge of the energy storage device 101 can be slowly reduced or remain basically unchanged, thereby extending the energy storage The life of the device.

[0079] Furthermore, if the current state of charge of the energy storage device is less than the third preset threshold, the following steps are performed:

[0080] S245. The additional power is calculated according to the current state of charge of the energy storage device and the third preset threshold; where the third threshold is smaller than the second preset threshold. Specifically, the additional power is equal to the difference between the current state of charge of the energy storage device and the third preset threshold.

[0081] S246. Obtain the target output power of the fuel cell according to the additional power and the current total power demand of the entire vehicle, and control the output power of the fuel cell as the target output power. At this time, the energy storage device 101 does not discharge. Specifically, the target output power of the fuel cell 105 is equal to the sum of the additional power and the current total power demand of the entire vehicle. At this time, because the state of charge of the energy storage device is low, in order to avoid over-discharge of the energy storage device, the fuel cell can be controlled to charge the energy storage device 101 while ensuring the operation of the entire vehicle, so as to realize the energy storage device 101 Online charging, so that the state of charge of the energy storage device 101 is maintained near the third preset threshold.

[0082] In an embodiment, the above method further includes a control method for the parking charging mode. Specifically, the above method further includes the following steps:

[0083] When the current total power demand of the vehicle is 0 and the state of charge of the energy storage device 101 is less than or equal to the third preset threshold, the fuel cell is controlled to charge the energy storage device 101 or the energy storage device 101 is charged through an external power supply. Optionally, for example, the value range of the third preset threshold may be 5%-10%. That is, when the vehicle is parked, if the power of the energy storage device 101 is low (the state of charge is less than or equal to the third preset threshold), the fuel cell 105 can continue to charge the energy storage device 101. The energy at this time flows from the fuel cell 105 to the energy storage device 101, and the DC/DC converter can control the charging power. Of course, an external power source (charging station or household charging pile) can also be used to charge the energy storage device 101 through an external charging interface. Further, the power plant of the automobile can also realize energy supplement by adding hydrogen to the fuel cell, and the hydrogen can be supplemented by filling hydrogen through the hydrogen refueling station.

[0084] With the various implementations described above, users can choose and control according to travel needs. For example, when the travel distance is short and the power of the energy storage device 101 is high (for example, the current state of charge of the energy storage device 101 is greater than the first preset threshold), the entire vehicle can be controlled to run in the CD mode. Further, when the entire vehicle is running in the CD mode, the current state of charge of the energy storage device 101 can be monitored in real time. If the current state of charge of the energy storage device 101 is less than the first preset threshold, the entire vehicle can be controlled at this time. The operating mode of the car is switched from CD mode to CS mode or Blended mode. Of course, when the travel mileage is short, you can also use only the CD mode.

[0085] When the travel distance is long, the vehicle can be controlled to run in CD mode first. When the current state of charge of the energy storage device 101 is less than the first preset threshold, the fuel cell 105 can be turned on to control the target output power output by the fuel cell Less than or equal to the average total power demand of the vehicle. That is, the operating mode of the entire vehicle is controlled to switch from the CD mode to the Blended mode or the CS mode, so that the state of charge of the energy storage device 101 is slowly reduced or remains basically unchanged, thereby extending the life of the energy storage device.

[0086] Or, when the travel distance is long, the fuel cell is turned on at the beginning of the vehicle start, and the target output power of the fuel cell is controlled to be less than the average total power demand of the vehicle, that is, the vehicle is controlled to run in the Blended mode, so that energy storage The state of charge of the device 101 can slowly decrease. Further, if the current state of charge of the energy storage device 101 is greater than or equal to the third preset threshold, and the current state of charge of the energy storage device 101 is less than the second preset threshold, at this time, the output of the fuel cell 105 can be controlled The target output power is equal to the average value of the total power demand of the vehicle, that is, the operating mode of the vehicle is controlled to switch from the Blended mode to the CS mode. Furthermore, if the current state of charge of the energy storage device is less than the third preset threshold, the target output power of the fuel cell can be obtained according to the additional power and the current total power demand of the vehicle, and the output power of the fuel cell is controlled as the target Output power. At this time, the target output power of the fuel cell 105 is equal to the sum of the additional power and the current total power demand of the vehicle, and the fuel cell 105 can charge the energy storage device 101 at the same time. At this time, since the state of charge of the energy storage device is low, in order to avoid over-discharge of the energy storage device, the fuel cell can be controlled to charge the energy storage device 101 while ensuring the operation of the entire vehicle to realize online charging.

[0087] In one embodiment, such as Picture 9 As shown, the above method further includes the step of selecting and optimizing the fuel cell and the energy storage device 101, and the model of the fuel cell and the energy storage device 101 is determined through the optimization of the selection to improve the performance of the power device. Specifically include the following steps:

[0088] S410. Calculate according to the preset vehicle design parameters to obtain the power plant parameters of the whole vehicle under preset working conditions; wherein, the vehicle design parameters include vehicle weight, windward area, rolling resistance, etc., and the preset working conditions may include NEDC (New European Driving Cycle, a type-I test condition of the European 3/4 emission standard) operating conditions, FTP-75 (Federal Test Procedure–75) operating conditions, JC10-15 and other typical operating conditions Analyzing the above-mentioned vehicle design parameters and specific working conditions can obtain power plant parameters such as the average power required by vehicle operation and the maximum power required by vehicle operation. For example, the average power required by the vehicle operation can determine the power of the fuel cell to be mounted, and the maximum power required by the vehicle operation can determine the type and capacity of the energy storage device 101.

[0089] S420. Evaluate the power, economy, and durability of the entire vehicle according to the power plant parameters, and obtain the current evaluation result; in this embodiment, the acquired power plant parameters may be input into a pre-built vehicle dynamic model for simulation calculation , Get the vehicle's dynamics (such as acceleration performance, climbing performance, etc.), economy (such as power consumption and hydrogen consumption, etc.) and durability (such as the attenuation degree of the energy storage device 101 and the fuel cell 105, etc.) Information, and evaluate based on the above comprehensive information to obtain the current evaluation results.

[0090] S430: Calculate the deviation value between the current evaluation result and the preset evaluation result; in this embodiment, the deviation value may be equal to the absolute value of the difference between the current evaluation result and the preset evaluation result.

[0091] S440: Adjust the battery capacity of the energy storage device 101 and/or the output power of the fuel cell according to the deviation value until the deviation value between the current evaluation result and the preset evaluation result is within the preset range. For example, when the acceleration capability of the vehicle is less than the preset acceleration capability, the acceleration capability can be improved by increasing the battery capacity of the energy storage device 101 or increasing the power of the fuel cell. In this way, optimized power plant parameters and design results can be obtained after multiple rounds of iterative optimization. Compared with the traditional method of determining power plant parameters based on experience, the method of this embodiment is more standardized and reliable.

[0092] S450. When the deviation between the current evaluation result and the preset evaluation result is within the preset range, determine the model of the energy storage device 101 according to the battery capacity of the energy storage device 101 corresponding to the current evaluation result, and determine the model of the energy storage device 101 according to the current evaluation result. The output power of the fuel cell determines the model of the fuel cell.

[0093] A person of ordinary skill in the art can understand that all or part of the processes in the methods of the above-mentioned embodiments can be implemented by instructing relevant hardware through a computer program. The program can be stored in a computer readable storage medium. At this time, it may include the procedures of the above-mentioned method embodiments. The storage medium may be a magnetic disk, an optical disc, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM), etc.

[0094] In addition, an embodiment of the present invention also provides a range-extended fuel cell vehicle power plant control system 200, which is used in the above-mentioned range-extended fuel cell power plant for energy storage device 101 and fuel cell selection optimization and energy storage device 101 and the fuel cell 105 operating state control.

[0095] The aforementioned control system includes a state acquisition module 210, a first power adjustment module 220, and a second power adjustment module 230. The state acquisition module 210 is used to acquire the current total power demand of the entire vehicle and the current state of charge of the energy storage device 101. Specifically, the output torque of the driving motor 104 can be obtained according to the driver's operation (such as the operation of the driver stepping on a pedal), and the current total power demand of the entire vehicle can be determined according to the output torque of the driving motor 104. Among them, the state of charge of the energy storage device 101 is the ratio of the remaining power to the total power, which is usually expressed as a percentage. When the current state of charge of the energy storage device 101 is 1, it may indicate that the energy storage device 101 is in a fully charged state. When the current state of charge of the energy storage device 101 is 0, it can indicate that the energy storage device 101 is in a fully discharged state, that is, the energy of the energy storage device 101 is completely exhausted.

[0096] The first power adjustment module 220 is configured to set the output power of the fuel cell as the target output power according to the current total power demand of the entire vehicle and the current state of charge of the energy storage device 101. In this embodiment, the target output power of the fuel cell can be a fixed value (for example, the target output power of the fuel cell can be 0), and the target output power of the fuel cell can also dynamically change around the preset operating point. At this time, the fuel cell The output power is not a constant value, but is dynamically adjusted within a certain range with slight fluctuations. In this way, the fuel cell can be operated at a relatively stable operating point, thereby avoiding the violent dynamic load change of the fuel cell, thereby prolonging the service life of the fuel cell.

[0097] The second power adjustment module 230 is used to determine the output power of the energy storage device 101 according to the target output power of the fuel cell and the total power demand of the entire vehicle, so that the energy storage device 101 is in a passive output state. Specifically, the output power of the energy storage device 101 is equal to the difference between the total required power of the vehicle and the target output power of the fuel cell. In this embodiment, the output power of the energy storage device is obtained through the target output power of the fuel cell 105 and the total power demand of the entire vehicle, so that the energy storage device 101 is in a passive output state, and the service life of the energy storage device 101 can be prolonged.

[0098] It should be clear that each module or unit in the control system of this embodiment corresponds to each step in the above-mentioned control method, and the working principle of the control system is consistent with the execution process of the above-mentioned control method. For details, please refer to the above description.

[0099] At the same time, an embodiment of the present application also provides a control device for a fuel cell vehicle power plant with a range-extended fuel cell vehicle, including a processor and a memory for storing a computer program. When the processor executes the computer program, the method in any of the above embodiments is implemented. Steps in. Optionally, when the processor executes the foregoing computer program, the following steps are executed:

[0100] Obtain the current total power demand of the vehicle and the current state of charge of the energy storage device 101; specifically, the output torque of the drive motor 104 can be obtained according to the driver's operation (such as the operation of the driver stepping on the pedal), and according to the drive motor 104 The output torque determines the current total power demand of the vehicle. Among them, the state of charge of the energy storage device 101 is the ratio of the remaining power to the total power, which is usually expressed as a percentage. When the current state of charge of the energy storage device 101 is 1, it may indicate that the energy storage device 101 is in a fully charged state. When the current state of charge of the energy storage device 101 is 0, it can indicate that the energy storage device 101 is in a fully discharged state, that is, the energy of the energy storage device 101 is completely exhausted.

[0101] Set the output power of the fuel cell 105 as the target output power according to the current total power demand of the vehicle and the current state of charge of the energy storage device 101; in this embodiment, the target output power of the fuel cell 105 can be a fixed value (such as fuel The target output power of the battery can be 0), and the target output power of the fuel cell 105 can also dynamically change around the preset operating point. At this time, the output power of the fuel cell 105 is not a constant value, but is dynamically adjusted within a certain range. Slight fluctuations. In this way, the fuel cell 105 can be operated at a relatively stable operating point, so that the fuel cell 105 can be prevented from violently changing the load dynamically, and the service life of the fuel cell can be prolonged.

[0102] The output power of the energy storage device 101 is determined according to the target output power of the fuel cell 105 and the total power demand of the entire vehicle. Specifically, the output power of the energy storage device 101 is equal to the difference between the current total power demand of the entire vehicle and the target output power output by the fuel cell. In this embodiment, the output power of the energy storage device is obtained through the target output power of the fuel cell 105 and the total power demand of the entire vehicle, so that the energy storage device 101 is in a passive output state, and the service life of the energy storage device 101 can be prolonged.

[0103] In addition, the embodiments of the present application also provide a computer-readable storage medium with a computer program stored on the computer-readable storage medium. When the computer program is executed by one or more processors, the Method steps. Optionally, the aforementioned computer-readable storage medium may be a non-volatile storage medium and/or a volatile storage medium. The non-volatile storage medium may include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile storage media may include random access memory (RAM) or external cache memory. As an illustration and not a limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous chain Channel (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0104] The control method, system, device, and storage medium of the power unit of a range-extended fuel cell vehicle in the embodiments of the present application can make the output power of the fuel cell within the preset power range, so the fuel cell can work at a relatively stable operating point, thereby The violent dynamic load change of the fuel cell is avoided, thereby prolonging the life of the fuel cell. At the same time, the control method can determine the output power of the energy storage device according to the output power of the fuel cell and the total power demand of the vehicle, so that the energy storage device is in a passive output state, so the energy storage device can be in a shallow charge and shallow discharge state Compared with the traditional deep charge and deep discharge state, the life of the energy storage device is prolonged.

[0105] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should It is considered as the range described in this specification.

[0106] The above-mentioned embodiments only express several implementation modes of the present invention, and their description is more specific and detailed, but they should not be interpreted as a limitation on the scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.