A fuel cell power output control method and device

Abstract

The present invention discloses a fuel cell power output control method and device, wherein the method comprises: obtaining the vehicle power requirement of the vehicle, the SOC value of the power battery, the vehicle speed and the power parameter of the fuel cell; determining the first output power of the fuel cell based on the vehicle power requirement, the SOC value and the power parameter; determining the second output power of the fuel cell based on the power parameter and the vehicle speed; determining the smaller value of the first output power and the second output power as the target power of the actual working output of the fuel cell. The present invention can suppress the working noise of the fuel cell without adding hardware, which is beneficial to the space layout of the whole vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cells, and in particular to a method and device for controlling power output of a fuel cell. Background Art

[0002] The hydrogen fuel cell system is mainly composed of a fuel cell stack and system accessories such as an air compressor, a hydrogen circulation pump, a boost DCDC module, a PTC module, and a cooling water pump. Among them, the air compressor is generally a high-speed centrifugal type with a speed range of 30,000 to 100,000 revolutions. The high-speed operation of the air compressor will produce high aerodynamic noise, which is the main noise source of the fuel cell system. The current main method to reduce the aerodynamic noise of the air compressor is to use a multi-stage muffler, which can significantly reduce the noise and improve the NVH (Noise Vibration Harshness) level of the vehicle. However, this solution will increase product costs, and multiple mufflers are not conducive to the layout of the vehicle.

[0003] It can be seen that the current way of noise control for fuel cell vehicles will increase hardware costs, and the addition of hardware is also not conducive to the spatial layout of the entire vehicle. Summary of the invention

[0004] In view of the above problems, the present invention proposes a fuel cell power output control method and device, which can suppress the working noise of the fuel cell without adding hardware, which is beneficial to the space layout of the whole vehicle.

[0005] In the first aspect, the present application provides the following technical solution through an embodiment:

[0006] A fuel cell power output control method, comprising:

[0007] Obtain the vehicle's required power, the SOC value of the power battery, the vehicle speed, and the power parameters of the fuel cell; determine the first output power of the fuel cell based on the vehicle's required power, the SOC value, and the power parameters; determine the second output power of the fuel cell based on the power parameters and the vehicle speed; and determine the smaller value between the first output power and the second output power as the target power of the actual working output of the fuel cell.

[0008] Optionally, the power parameters include maximum output power, idle output power, rated output power and calibrated output power, and the calibrated output power is greater than the idle output power and less than the rated output power; and determining the first output power of the fuel cell based on the vehicle required power, the SOC value and the power parameters includes:

[0009] Based on the vehicle required power and the SOC value, the first output power of the fuel cell is determined from the maximum output power, the idle output power, the rated output power and the calibrated output power.

[0010] Optionally, determining the first output power of the fuel cell from the maximum output power, the idle output power, the rated output power and the calibrated output power based on the vehicle required power and the SOC value includes:

[0011] If the vehicle power requirement is less than a preset first calibrated power value, and the SOC value is greater than the maximum state of charge of the power battery, the idle output power is determined as the first output power; if the vehicle power requirement is greater than the first calibrated power value and less than a preset second calibrated power value, and the SOC value is greater than the maximum state of charge, the calibrated output power is determined as the first output power; wherein the first calibrated power value and the second calibrated power value are used to define the operating state of the vehicle; if the SOC value is greater than the minimum state of charge of the power battery and less than the maximum state of charge, the vehicle If the required power is less than the second calibrated power value, the calibrated output power is used to determine the first output power; if the SOC value is less than the minimum state of charge and the vehicle's required power is less than the second calibrated power value, the first output power is determined by the rated output power; if the SOC value is greater than the minimum state of charge and the vehicle's required power is greater than the second calibrated power value, the first output power is determined by the rated output power; if the SOC value is less than the minimum state of charge and the vehicle's required power is greater than the second calibrated power value, the first output power is determined by the maximum output power.

[0012] Optionally, the calibrated output power is 50% of the rated output power.

[0013] Optionally, the power parameter includes a maximum output power and an idle output power; and determining the second output power of the fuel cell based on the power parameter and the vehicle speed includes:

[0014] If the vehicle speed is less than a preset first calibration speed, the second output power is determined to be 0; if the vehicle speed is greater than a preset second calibration speed, the second output power is determined to be the maximum output power; the first calibration speed and the second calibration speed are used to define the operating state of the vehicle, and the second calibration speed is greater than the first calibration speed; if the vehicle speed is greater than the preset first calibration speed and less than the preset second calibration speed, the second output power of the fuel cell is determined based on the maximum output power, the idle output power and the vehicle speed.

[0015] Optionally, determining the second output power of the fuel cell based on the maximum output power, the idle output power and the vehicle speed includes:

[0016] Obtain a power difference between the maximum output power and the idle output power, a first speed difference between the second calibrated speed and the first calibrated speed, and a second speed difference between the vehicle speed and the first calibrated speed; obtain the second output power according to the idle output power, the power difference, the first speed difference, and the second speed difference; the second output power is positively correlated with the vehicle speed.

[0017] Optionally, determining the second output power of the fuel cell based on the maximum output power, the idle output power and the vehicle speed includes:

[0018] According to the formula Determine the second output power; wherein Pfc is the second output power, Pfc_Idle is the idle output power, Pfc_Max is the maximum output power, V is the vehicle speed, V0 is the first calibrated speed, and V1 is the second calibrated speed.

[0019] In the second aspect, based on the same inventive concept, the present application provides the following technical solution through an embodiment:

[0020] A fuel cell power output control device, comprising:

[0021] A parameter acquisition module is used to obtain the vehicle's required power, the SOC value of the power battery, the vehicle speed and the power parameters of the fuel cell; an output power determination module is used to determine the first output power of the fuel cell based on the vehicle's required power, the SOC value and the power parameters; based on the power parameters and the vehicle speed, the second output power of the fuel cell is determined; a target power determination module is used to determine the smaller value of the first output power and the second output power as the target power of the actual working output of the fuel cell.

[0022] In the third aspect, based on the same inventive concept, the present application provides the following technical solution through an embodiment:

[0023] An electronic device comprises a processor and a memory, wherein the memory is coupled to the processor and stores instructions, and when the instructions are executed by the processor, the electronic device executes the steps of any one of the methods described in the first aspect.

[0024] In the fourth aspect, based on the same inventive concept, the present application provides the following technical solution through an embodiment:

[0025] A readable storage medium stores a computer program, which, when executed by a processor, implements the steps of any one of the methods described in the first aspect.

[0026] A fuel cell power output control method and device provided in an embodiment of the present invention obtains the vehicle's vehicle power demand, the SOC value of the power battery, the vehicle speed and the power parameters of the fuel cell; then, based on the vehicle's power demand, SOC value and power parameters, the first output power of the fuel cell is determined; based on the power parameters and the vehicle speed, the second output power of the fuel cell is determined; the smaller value of the first output power and the second output power is determined as the target power of the actual working output of the fuel cell. The first output power is determined based on the vehicle's power demand, SOC value and power parameters, that is, the output power that matches the best hardware state of the vehicle itself is matched, and different power states correspond to different speeds of the fuel cell's air compressor, so the noise can be effectively reduced at low power, and other noises will weaken the noise effect of the fuel cell air compressor at high power; and the second output power is determined based on the vehicle speed. Under different vehicle speed states, the tire noise, wind noise and other noises outside the vehicle have different effects on the noise of the fuel cell. It is in line with cognition that the noise increases with the increase of the vehicle speed, so the second output power can be used to comprehensively consider the noise effect caused by the vehicle speed. Ultimately, the smaller of the first output power and the second output power is determined as the final target power of the fuel cell, which can effectively suppress the operating noise of the fuel cell under different operating conditions without increasing hardware costs, which is beneficial to the space layout of the entire vehicle.

[0027] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0029] Figure 1 A flow chart of a fuel cell power output control method provided by an embodiment of the present invention is shown;

[0030] Figure 2 A schematic diagram showing the distribution relationship among the vehicle required power, SOC value and the first output power in an embodiment of the present invention is shown;

[0031] Figure 3 A schematic diagram showing the relationship between the second output power and the vehicle speed in an embodiment of the present invention is shown;

[0032] Figure 4 A schematic structural diagram of a fuel cell power output control device provided by an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0033] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the 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 set forth herein. On the contrary, 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.

[0034] See also Figure 1 , shows a fuel cell power output control method provided by an embodiment of the present invention, which can be used to control the output power of a fuel cell of a fuel cell vehicle, thereby controlling the operating speed of the fuel cell's air compressor to achieve noise suppression. Specifically, the fuel cell power output control method includes:

[0035] Step S10: obtaining the vehicle's required power, the SOC value of the power battery, the vehicle speed, and the power parameters of the fuel cell;

[0036] Step S20: determining the first output power of the fuel cell based on the vehicle required power, the SOC value and the power parameter; determining the second output power of the fuel cell based on the power parameter and the vehicle speed;

[0037] Step S30: determining the smaller value of the first output power and the second output power as the target power of the actual working output of the fuel cell.

[0038] In this embodiment, through steps S10-S30, the first output power obtained is based on the vehicle's required power, SOC (State of Charge) value and power parameters, that is, the optimal output power is matched based on the vehicle's own hardware states. Different power states correspond to different speeds of the fuel cell's air compressor, so the noise can be effectively reduced at low power, and other noises will weaken the noise impact of the fuel cell air compressor at high power; and the second output power is determined based on the vehicle speed. Under different vehicle speeds, the tire noise, wind noise, etc. of the vehicle's outside have different effects on the noise of the fuel cell. It is in line with cognition that the noise increases with the increase of vehicle speed. Therefore, the second output power can be used to comprehensively consider the noise impact caused by the vehicle speed. Finally, the smaller of the first output power and the second output power is determined as the target power of the final fuel cell, which can effectively suppress the working noise of the fuel cell under different working conditions without increasing the hardware cost, which is beneficial to the space layout of the whole vehicle. The specific implementation of each step of this embodiment is described in detail below.

[0039] Step S10: Obtain the vehicle's required power, the SOC value of the power battery, the vehicle speed, and the power parameters of the fuel cell.

[0040] In step S10, the vehicle is a fuel cell vehicle. The power parameters of the fuel cell (fuel cell system) may include maximum output power, idle output power, rated output power and calibrated output power. The calibrated output power is greater than the idle output power and less than the rated output power. The calibrated output power can be calibrated to 50% of the rated output power in this embodiment. Of course, vehicles for different application scenarios can also be calibrated differently. For example, for vehicles with long-term poor driving conditions, the calibrated output power can be set larger; conversely, the calibrated output power can be set smaller. For example, in some implementations, the calibrated output power can be set to 30% to 70% of the rated power, specifically 40%, 55%, 60%, etc., without restriction. In addition, it can also be associated with different driving modes of the vehicle without restriction. For example, the calibrated output power can be larger in sports mode and smaller in other modes. The setting of the calibrated output power can also be calibrated by actual vehicle experiments or simulations, and the proportion of noise generated by the air compressor is obtained to calibrate the calibrated output power.

[0041] The vehicle also includes a power battery, that is, the fuel cell and the power battery can be used together as the vehicle's power source, or they can be used alone as the vehicle's power source. The vehicle's required power, SOC value, vehicle speed, and power parameters can all be read out through the vehicle system or the battery management system.

[0042] Step S20: determining the first output power of the fuel cell based on the vehicle required power, the SOC value and the power parameter; and determining the second output power of the fuel cell based on the power parameter and the vehicle speed.

[0043] For ease of explanation, the following definitions are given in this embodiment:

[0044] Pfc: fuel cell system output power, i.e. target power;

[0045] Pfc_Idle: idle output power of the fuel cell system;

[0046] Pfc_Rated: Rated output power of the fuel cell system;

[0047] Pfc_Rated_50%: 50% of the rated output power of the fuel cell system;

[0048] Pfc_Max: maximum output power of the fuel cell system;

[0049] Prq: vehicle required power;

[0050] Prq_Set1: The first calibrated power value (the calibrated value of the vehicle's required power);

[0051] Prq_Set2: The second calibrated power value (the calibrated value of the vehicle's required power);

[0052] SOC: state of charge of the power battery;

[0053] SOC_Min: The minimum allowable state of charge set for the power battery (minimum state of charge);

[0054] SOC_Max: The maximum allowable state of charge (maximum state of charge) set for the power battery;

[0055] V: vehicle speed; V0: first calibrated speed; V1: second calibrated speed.

[0056] In step S20, obtaining the first output power can be achieved by determining the first output power of the fuel cell from the maximum output power, the idle output power, the rated output power and the calibrated output power based on the vehicle required power and the SOC value.

[0057] See also Figure 2 , specifically:

[0058] If the vehicle's required power is less than the preset first calibrated power value, and the SOC value is greater than the maximum state of charge of the power battery, the idle output power is determined as the first output power. In this implementation, it means that the vehicle is working in a good working condition and in a low-power working state, and the power battery has sufficient power. At this time, the fuel cell can be controlled to work in a lower output power state, which can effectively suppress the noise contribution of the air compressor.

[0059] If the vehicle's required power is greater than the first calibrated power value and less than the preset second calibrated power value, and the SOC value is greater than the maximum state of charge, the calibrated output power is used to determine the first output power; the first calibrated power value and the second calibrated power value are used to define the vehicle's operating state. It can be understood that when the required power is less than the first calibrated power value, the vehicle may be in low-speed driving, traffic jams and other conditions, such as low-speed driving in urban areas; when the required power is between the first calibrated power value and the second calibrated power value, the vehicle may be in medium-speed driving conditions, such as fast driving in urban areas and suburbs; when the required power is greater than the second calibrated power value, the vehicle may be in high-speed driving, intense driving and other conditions, such as driving in mountainous areas and on highways. Under this condition, it means that the vehicle's vehicle power demand is medium, the power battery is relatively sufficient, and the fuel cell can work at a calibrated output power lower than the rated output power to suppress the noise contribution of the air compressor.

[0060] If the SOC value is greater than the minimum state of charge of the power battery and less than the maximum state of charge, and the vehicle's required power is less than the second calibrated power value, the calibrated output power is determined as the first output power. Under this condition, it means that the power of the power battery is not in the best state, but the vehicle's required power is also medium, and the fuel cell can operate at a calibrated output power lower than the rated output power to suppress the noise contribution of the air compressor.

[0061] If the SOC value is less than the minimum state of charge and the vehicle power requirement is less than the second calibrated power value, the rated output power is used to determine the first output power. Under this condition, it means that the power of the power battery is not good and the vehicle power requirement is medium. At this time, the fuel cell needs to provide more power output, so the fuel cell can be controlled to output at the rated output power.

[0062] If the SOC value is greater than the minimum state of charge and the vehicle power requirement is greater than the second calibrated power value, the rated output power is used to determine the first output power. Under this condition, it means that the power of the power battery is not in an optimal state. At the same time, the vehicle power requirement is large, and the fuel cell needs to provide more power output. Therefore, the fuel cell can be controlled to output at the rated output power.

[0063] If the SOC value is less than the minimum state of charge and the vehicle power requirement is greater than the second calibrated power value, the maximum output power is used to determine the first output power. Under this condition, it means that the power of the power battery is not good. At the same time, the vehicle power requirement is large. At this time, the fuel cell is required to provide the main power output. Therefore, the fuel cell can be controlled to output at the maximum output power.

[0064] In this embodiment, the fuel cell of the vehicle can be divided into multiple working blocks (9 working blocks are shown in the figure) through the above-mentioned first calibrated power value, second calibrated power value, minimum state of charge and maximum state of charge, so as to match the output power corresponding to the fuel cell for each working block, thereby avoiding effectively controlling the working state of the air compressor of the fuel cell and suppressing noise. In addition, more calibration values ​​can be set in this embodiment, such as the third calibration value and the fourth calibration value, etc., which are set to the power calibration of the whole vehicle demand, between the idle output power and the rated output power. At the same time, the output power corresponding to the fuel cell is calibrated for each block, so as to achieve more precise control.

[0065] In step S20, refer to Figure 3 , the second output power can be obtained as:

[0066] If the vehicle speed is less than the preset first calibration speed, the second output power is determined to be 0. If the vehicle speed is less than the first calibration speed, it means that the vehicle is traveling at a low speed, such as in a traffic jam or temporary parking, and the proportion of wind noise, tire noise and other noises decreases or disappears. At this time, the noise contribution of the air compressor will increase sharply. Therefore, the second output power can be determined to be 0, thereby avoiding the working noise of the fuel cell.

[0067] If the vehicle speed is greater than a preset second calibrated speed, the second output power is determined to be the maximum output power; if the vehicle speed is greater than the second calibrated speed, the vehicle is in a high-speed driving state, at which time the tire noise and wind noise may be large, and the noise contribution ratio of the air compressor decreases, and the second output power can be determined as the maximum output power.

[0068] It can be understood that the first calibrated speed and the second calibrated speed are used to define the running state of the vehicle, and the second calibrated speed is greater than the first calibrated speed; when the vehicle speed is between the first calibrated speed and the second calibrated speed, the vehicle may be in a medium-speed driving state. At this time, the power demand of the whole vehicle will not reach the maximum, and the output power of the fuel cell can be adjusted more finely. That is: if the vehicle speed is greater than the preset first calibrated speed and less than the preset second calibrated speed, the second output power of the fuel cell is determined based on the maximum output power, the idle output power and the vehicle speed.

[0069] Furthermore, the power difference between the maximum output power and the idle output power, the first speed difference between the second calibrated speed and the first calibrated speed, and the second speed difference between the vehicle speed and the first calibrated speed can be obtained first; then, the second output power is obtained according to the idle output power, the power difference, the first speed difference, and the second speed difference; the second output power is positively correlated with the vehicle speed, specifically, linearly positively correlated, thereby achieving more precise control between the first calibrated speed and the second calibrated speed.

[0070] In some implementations, the formula Determine the second output power; where Pfc is the second output power, Pfc_Idle is the idle output power, Pfc_Max is the maximum output power, V is the vehicle speed, V0 is the first calibrated speed, and V1 is the second calibrated speed. Through the above formula, in the process of adjusting the output power of the fuel cell, continuous linear adjustment can be achieved between the first calibrated speed and the second calibrated speed, thereby accurately suppressing the working noise of the fuel cell and ensuring that the vehicle runs in a better state. In other words, when the vehicle speed is low, the fuel-electric system does not work, which improves the NVH performance of the low-speed vehicle. At medium and high speeds, the fuel cell outputs linear power with the vehicle speed, and the noise changes of the whole vehicle meet the user's expectations, which is beneficial to the subjective evaluation performance of the whole vehicle NVH.

[0071] Step S30: determining the smaller value of the first output power and the second output power as the target power of the actual working output of the fuel cell.

[0072] In step S30, the target power is the actual working power of the fuel cell under the current working condition. Since the determined first output power is obtained based on the first calibrated power value and the second calibrated power value, and the second output power is obtained based on the first calibrated speed and the second calibrated speed; therefore, the working conditions corresponding to the obtained first output power and the second output power must have overlapping parts, and finally the smaller value of the first output power and the second output power is determined as the target power to achieve the best effect of suppressing the working noise of the fuel cell.

[0073] It should also be noted that the above values ​​greater than or less than in this embodiment can be taken based on needs or actual conditions. The following is an explanation using a specific example:

[0074] In the first step, the VCU (Vehicle Control Unit) calculates the current vehicle power demand Prq based on the accelerator pedal / brake pedal travel signal, and obtains the SOC value of the power battery in the current state.

[0075] In the second step, according to the vehicle's required power and SOC value, the VCU calculates the first output power of the fuel cell system (such as Figure 2 shown);

[0076] When SOC>SOC_Max and the vehicle required power Prq<=Prq_Set1, the first output power Pfc1 of the fuel cell system=Pfc_Idle;

[0077] When SOC>SOC_Min and SOC<=SOC_Max and the vehicle required power Prq<=Prq_Set2, or SOC>SOC_Max and the vehicle required power Prq>Prq_Set1 (calibrated value) and the vehicle required power Prq<=Prq_Set2, the first output power Pfc1 of the fuel cell system=Pfc_Rated_50% (calibrated output power);

[0078] When SOC<=SOC_Min and the vehicle required power Prq<=Prq_Set2, or SOC>SOC_Min and the vehicle required power Prq>Prq_Set2, the first output power Pfc1 of the fuel cell system=Pfc_Rated;

[0079] When SOC<=SOC_Min and the vehicle required power Prq>Prq_Set2 (calibrated value), the first output power Pfc1 of the fuel cell system is equal to Pfc_Max.

[0080] The third step is to further determine the second power output of the fuel cell system according to the vehicle speed (eg Figure 3 When the vehicle speed is ≤V0 (the first calibrated speed), the fuel-electric system power output Pfc2 = 0; when the vehicle speed is >V0 (the first calibrated speed) and the vehicle speed is ≤V1, the fuel-electric system starts and outputs When the vehicle speed is greater than V1 (calibrated value), the system outputs the maximum power Pfc2 = Pfc_Max;

[0081] The fourth step is to take the minimum value of the power output of the fuel cell system determined in the second and third steps as the final output of the fuel cell system Pfc=min(Pfc1, Pfc2).

[0082] It is understandable that when the vehicle is driving at a low speed, if the fuel cell system is started, the whole vehicle will suddenly increase the air compressor noise, and the noise is obvious, that is, the contribution of the air compressor noise accounts for a high proportion, resulting in a deterioration in the subjective evaluation of the vehicle NVH; in the medium and high speed section, with the increase of tire noise and wind noise, the noise increase caused by the start of the fuel cell system will be weakened by the tire noise and wind noise, and the increase of noise with the speed is also in line with the user's cognition. At this time, starting the fuel cell system can reduce the risk of users complaining about the noise of the whole vehicle. Therefore, through the control process in this embodiment, it is possible to control the fuel cell to output at different powers under different working conditions, which not only suppresses the working noise of the fuel cell, but also effectively controls the working noise contribution ratio of the fuel cell, improves the overall noise perception of the user, and this method does not increase the hardware cost, which is conducive to the space layout of the whole vehicle.

[0083] See also Figure 4 Based on the same inventive concept, a fuel cell power output control device 300 is also provided in one embodiment of the present invention. The fuel cell power output control device 300 includes:

[0084] The parameter acquisition module 301 is used to obtain the vehicle's required power, the SOC value of the power battery, the vehicle speed and the power parameters of the fuel cell; the output power determination module 302 is used to determine the first output power of the fuel cell based on the vehicle's required power, the SOC value and the power parameters; based on the power parameters and the vehicle speed, determine the second output power of the fuel cell; the target power determination module 303 is used to determine the smaller value of the first output power and the second output power as the target power of the actual working output of the fuel cell.

[0085] As an optional implementation manner, the power parameter includes a maximum output power, an idle output power, a rated output power, and a calibrated output power, wherein the calibrated output power is greater than the idle output power and less than the rated output power; the output power determination module 302 is specifically used for:

[0086] Based on the vehicle required power and the SOC value, the first output power of the fuel cell is determined from the maximum output power, the idle output power, the rated output power and the calibrated output power.

[0087] As an optional implementation manner, the output power determination module 302 is further specifically configured to:

[0088] If the vehicle power requirement is less than a preset first calibrated power value, and the SOC value is greater than the maximum state of charge of the power battery, the idle output power is determined as the first output power; if the vehicle power requirement is greater than the first calibrated power value and less than a preset second calibrated power value, and the SOC value is greater than the maximum state of charge, the calibrated output power is determined as the first output power, wherein the first calibrated power value and the second calibrated power value are used to define the operating state of the vehicle; if the SOC value is greater than the minimum state of charge of the power battery and less than the maximum state of charge, the vehicle If the required power is less than the second calibrated power value, the calibrated output power is used to determine the first output power; if the SOC value is less than the minimum state of charge and the vehicle's required power is less than the second calibrated power value, the first output power is determined by the rated output power; if the SOC value is greater than the minimum state of charge and the vehicle's required power is greater than the second calibrated power value, the first output power is determined by the rated output power; if the SOC value is less than the minimum state of charge and the vehicle's required power is greater than the second calibrated power value, the first output power is determined by the maximum output power.

[0089] As an optional implementation manner, the calibrated output power is 50% of the rated output power.

[0090] As an optional implementation manner, the power parameter includes the maximum output power and the idle output power; the output power determination module 302 is specifically used to:

[0091] If the vehicle speed is less than a preset first calibration speed, the second output power is determined to be 0; if the vehicle speed is greater than a preset second calibration speed, the second output power is determined to be the maximum output power; the first calibration speed and the second calibration speed are used to define the operating state of the vehicle, and the second calibration speed is greater than the first calibration speed; if the vehicle speed is greater than the preset first calibration speed and less than the preset second calibration speed, the second output power of the fuel cell is determined based on the maximum output power, the idle output power and the vehicle speed.

[0092] As an optional implementation manner, the output power determination module 302 is further specifically configured to:

[0093] Obtain a power difference between the maximum output power and the idle output power, a first speed difference between the second calibrated speed and the first calibrated speed, and a second speed difference between the vehicle speed and the first calibrated speed; obtain the second output power according to the idle output power, the power difference, the first speed difference, and the second speed difference; the second output power is positively correlated with the vehicle speed.

[0094] As an optional implementation manner, the output power determination module 302 is further specifically configured to:

[0095] According to the formula Determine the second output power; wherein Pfc is the second output power, Pfc_Idle is the idle output power, Pfc_Max is the maximum output power, V is the vehicle speed, V0 is the first calibrated speed, and V1 is the second calibrated speed.

[0096] It should be noted that the fuel cell power output control device 300 provided in the embodiment of the present invention has the same specific implementation and technical effects as those of the aforementioned method embodiment. For the sake of brief description, for matters not mentioned in the device embodiment, reference may be made to the corresponding contents in the aforementioned method embodiment.

[0097] Based on the same inventive concept, another embodiment of the present invention further provides an electronic device, including a processor and a memory, wherein the memory is coupled to the processor, and the memory stores instructions, and when the instructions are executed by the processor, the electronic device executes the steps of the method described in any one of the aforementioned embodiments. It should be noted that, in the electronic device provided in the embodiment of the present invention, when the instructions are executed by the processor, the specific implementation of each step and the technical effect produced are the same as those in the aforementioned method embodiment. For the sake of brief description, for the parts not mentioned in this embodiment, reference can be made to the corresponding contents in the aforementioned method embodiment.

[0098] Based on the same inventive concept, another embodiment of the present invention further provides a readable storage medium on which a computer program is stored, and when the program is executed by a processor, the steps of the method described in any one of the aforementioned method embodiments are implemented. It should be noted that in the readable storage medium provided in the embodiment of the present invention, when the program is executed by a processor, the specific implementation of each step and the technical effect produced are the same as those in the aforementioned method embodiment. For the sake of brief description, for the parts not mentioned in this embodiment, reference can be made to the corresponding contents in the aforementioned method embodiment.

[0099] The term "and / or" that appears in this article is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the objects associated before and after are in an "or" relationship; the word "comprising" does not exclude the existence of elements or steps that are not listed in the claims. The word "one" or "an" placed before an element does not exclude the existence of multiple such elements. The present invention can be implemented with the aid of hardware including several different elements and with the aid of appropriately programmed computers. In a unit claim that lists several devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc. does not indicate any order. These words can be interpreted as names.

[0100] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0101] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0102] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0103] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0104] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0105] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A fuel cell power output control method, characterized in that: include: Obtaining the vehicle's required power, the SOC value of the power battery, the vehicle speed, and the power parameters of the fuel cell; Determine a first output power of the fuel cell based on the vehicle required power, the SOC value and the power parameter; determine a second output power of the fuel cell based on the power parameter and the vehicle speed; Determining a smaller value between the first output power and the second output power as a target power of the actual working output of the fuel cell; The power parameters include maximum output power and idle output power; The determining the second output power of the fuel cell based on the power parameter and the vehicle speed includes: If the vehicle speed is less than a preset first calibrated speed, determining that the second output power is 0; If the vehicle speed is greater than a preset second calibrated speed, the second output power is determined to be the maximum output power; the first calibrated speed and the second calibrated speed are used to define the running state of the vehicle, and the second calibrated speed is greater than the first calibrated speed; If the vehicle speed is greater than a preset first calibrated speed and less than a preset second calibrated speed, determining a second output power of the fuel cell based on the maximum output power, the idle output power and the vehicle speed; The determining the second output power of the fuel cell based on the maximum output power, the idle output power and the vehicle speed comprises: Acquire a power difference between the maximum output power and the idle output power, a first speed difference between the second calibrated speed and the first calibrated speed, and a second speed difference between the vehicle speed and the first calibrated speed; The second output power is obtained according to the idle output power, the power difference, the first speed difference and the second speed difference; the second output power is positively correlated with the vehicle speed.

2. The method according to claim 1, characterized in that The power parameters include maximum output power, idle output power, rated output power and calibrated output power, wherein the calibrated output power is greater than the idle output power and less than the rated output power; and determining the first output power of the fuel cell based on the vehicle required power, the SOC value and the power parameters includes: Based on the vehicle required power and the SOC value, the first output power of the fuel cell is determined from the maximum output power, the idle output power, the rated output power and the calibrated output power.

3. The method according to claim 2, characterized in that The determining, based on the vehicle required power and the SOC value, the first output power of the fuel cell from the maximum output power, the idle output power, the rated output power, and the calibrated output power comprises: If the vehicle required power is less than the preset first calibrated power value, and the SOC value is greater than the maximum state of charge of the power battery, the idle output power is determined as the first output power; If the vehicle demand power is greater than the first calibrated power value and less than a preset second calibrated power value, and the SOC value is greater than the maximum state of charge, the calibrated output power is determined as the first output power; wherein the first calibrated power value and the second calibrated power value are used to define the operating state of the vehicle; If the SOC value is greater than the minimum state of charge of the power battery and less than the maximum state of charge, and the vehicle required power is less than the second calibrated power value, the calibrated output power is used to determine the first output power; If the SOC value is less than the minimum state of charge and the vehicle required power is less than the second calibrated power value, the rated output power is used to determine the first output power; If the SOC value is greater than the minimum state of charge and the vehicle required power is greater than the second calibrated power value, the rated output power is used to determine the first output power; If the SOC value is less than the minimum state of charge and the vehicle required power is greater than the second calibrated power value, the maximum output power is used to determine the first output power.

4. The method according to claim 2, characterized in that: The calibrated output power is 50% of the rated output power.

5. The method according to claim 1, characterized in that The determining the second output power of the fuel cell based on the maximum output power, the idle output power and the vehicle speed comprises: According to the formula , determine the second output power; wherein, is the second output power, is the idle output power, is the maximum output power, is the vehicle speed, is the first calibration speed, is the second calibration speed.

6. A fuel cell power output control device, characterized in that: include: A parameter acquisition module, used to acquire the vehicle's required power, the SOC value of the power battery, the vehicle's speed, and the power parameters of the fuel cell; An output power determination module, configured to determine a first output power of the fuel cell based on the vehicle required power, the SOC value and the power parameter; and determine a second output power of the fuel cell based on the power parameter and the vehicle speed; the power parameter includes a maximum output power and an idle output power; The output power determination module is specifically used for: If the vehicle speed is less than a preset first calibration speed, the second output power is determined to be 0; if the vehicle speed is greater than a preset second calibration speed, the second output power is determined to be a maximum output power; the first calibration speed and the second calibration speed are used to define the running state of the vehicle, and the second calibration speed is greater than the first calibration speed; If the vehicle speed is greater than a preset first calibrated speed and less than a preset second calibrated speed, determining a second output power of the fuel cell based on the maximum output power, the idle output power and the vehicle speed; Acquire a power difference between the maximum output power and the idle output power, a first speed difference between the second calibrated speed and the first calibrated speed, and a second speed difference between the vehicle speed and the first calibrated speed; The second output power is obtained according to the idle output power, the power difference, the first speed difference and the second speed difference; the second output power is positively correlated with the vehicle speed; The target power determination module is used to determine the smaller value of the first output power and the second output power as the target power of the actual working output of the fuel cell.

7. An electronic device, characterized in that: The electronic device comprises a processor and a memory, wherein the memory is coupled to the processor and stores instructions, and when the instructions are executed by the processor, the electronic device executes the steps of the method according to any one of claims 1 to 5.

8. A readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method described in any one of claims 1 to 5 are implemented.

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