Vehicle control method, device and vehicle

Abstract

The present application provides a vehicle control method, device and vehicle. The method includes: monitoring the required power of the target vehicle; when the required power is not greater than the preset power threshold, determining the first output power of the first fuel cell system according to the required power, the state of charge value of the target vehicle and the preset power interval information of the first fuel cell system, and controlling the first fuel cell system to provide the first output power; when the required power is greater than the preset power threshold, determining the second output power of the first fuel cell system and the third output power of the second fuel cell system according to the required power, the state of charge value of the target vehicle, the preset power interval information of the first fuel cell system and the preset power gear information of the second fuel cell system, controlling the first fuel cell system to provide the second output power, and controlling the second fuel cell system to provide the third output power. The present application can improve the service life of a multi-fuel cell system.

Description

Technical Field

[0001] The present application relates to the field of fuel cell technology, and in particular to a vehicle control method, device and vehicle. Background Art

[0002] The fuel cell system is a system that generates electricity through the electrochemical reaction of air and hydrogen. Due to its high efficiency and pollution-free characteristics, it is one of the important development directions of future new energy vehicles.

[0003] At present, two or more fuel cell systems are usually arranged on a vehicle to meet the vehicle's power demand by jointly supplying power. However, existing multi-fuel cell systems generally have the problem of low service life. Summary of the invention

[0004] The embodiments of the present application provide a vehicle control method, device and vehicle to solve the problem of low service life of a multi-fuel cell system.

[0005] In a first aspect, an embodiment of the present application provides a vehicle control method, including:

[0006] Monitoring the required power of a target vehicle; the target vehicle includes a first fuel cell system and a second fuel cell system, and the rated power of the first fuel cell system is greater than the rated power of the second fuel cell system;

[0007] When the required power is less than or equal to a preset power threshold, determining a first output power of the first fuel cell system according to the required power, the state of charge value of the target vehicle and the preset power range information of the first fuel cell system, and controlling the first fuel cell system to provide the first output power;

[0008] When the required power is greater than the preset power threshold, the second output power of the first fuel cell system and the third output power of the second fuel cell system are determined based on the required power, the charge state value of the target vehicle, the preset power range information of the first fuel cell system, and the preset power gear information of the second fuel cell system, and the first fuel cell system is controlled to provide the second output power, and the second fuel cell system is controlled to provide the third output power.

[0009] In a second aspect, an embodiment of the present application provides a vehicle control device, including:

[0010] A monitoring module, used to monitor the required power of a target vehicle; the target vehicle includes a first fuel cell system and a second fuel cell system, and the rated power of the first fuel cell system is greater than the rated power of the second fuel cell system;

[0011] a first control module, configured to determine a first output power of the first fuel cell system according to the required power, the state of charge value of the target vehicle and the preset power range information of the first fuel cell system when the required power is less than or equal to a preset power threshold, and control the first fuel cell system to provide the first output power;

[0012] The second control module is used to determine the second output power of the first fuel cell system and the third output power of the second fuel cell system according to the required power, the charge state value of the target vehicle, the preset power range information of the first fuel cell system and the preset power gear information of the second fuel cell system when the required power is greater than the preset power threshold, and to control the first fuel cell system to provide the second output power and control the second fuel cell system to provide the third output power.

[0013] In a third aspect, an embodiment of the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the steps of the method described in the first aspect or any possible implementation of the first aspect are implemented.

[0014] In a fourth aspect, an embodiment of the present application provides a vehicle, comprising the electronic device as described in the third aspect.

[0015] The embodiment of the present application provides a vehicle control method, device and vehicle, which provide two power control modes according to the size relationship between the required power and the preset power threshold, namely, a control mode of the high-power system outputting power alone according to the required power, the state of charge value of the target vehicle and the preset power interval information of the first fuel cell system, and a control mode of the common output power according to the required power, the state of charge value of the target vehicle, the preset power interval information of the first fuel cell system and the preset power gear information of the second fuel cell system. In this way, the control mode of the small power system of the high-power system can be optimized, which can not only reduce the working range of the high-power system and the number of load changes, but also increase the operating time of the small power system, thereby increasing the service life of the multi-fuel cell system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 is a flow chart of an implementation of a vehicle control method provided in an embodiment of the present application;

[0018] Figure 2 is a structural schematic diagram of a vehicle control device provided in an embodiment of the present application;

[0019] Figure 3 is a schematic diagram of an electronic device provided in an embodiment of the present application;

[0020] Figure 4 It is a schematic diagram of a vehicle provided in an embodiment of the present application. DETAILED DESCRIPTION

[0021] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0022] In order to make the purpose, technical solutions and advantages of the present application clearer, specific embodiments will be described below in conjunction with the accompanying drawings.

[0023] Due to current technological limitations, the output power of a single fuel cell system is relatively small and cannot meet the power requirements of the vehicle. To this end, two or more fuel cell systems are usually arranged on the vehicle to meet the vehicle's power needs by jointly supplying power. However, due to the small space for the current vehicle layout and the large size of the fuel cell system, there is a problem of difficulty in layout. In order to solve the layout problem, a fuel cell system with a larger output power (referred to as a high-power system) and a fuel cell system with a larger output power (referred to as a low-power system) can be used. However, this brings a new problem, namely the problem of low service life of multiple fuel cell systems such as high-power systems and low-power systems as described in the relevant technology.

[0024] In order to solve the problems in the prior art, the embodiments of the present application provide a vehicle control method, a device and a vehicle. The vehicle control method provided by the embodiments of the present application is first introduced below.

[0025] The applicant has found that for a multi-fuel cell system composed of a high-power system and a low-power system, the same power system control method is usually adopted to control the output power or change frequency of the two to be the same, while the low-power system is relatively weaker than the high-power system in terms of load change rate and service life. This causes the high-power system and the low-power system to restrain each other, and both require frequent load changes and power on and off. Frequent load changes and power on and off have a great impact on the life of the system, resulting in a shorter service life of the high-power system and the low-power system, especially the low-power system, which leads to frequent replacement of the system, greatly increasing the cost of use.

[0026] The executing entity of the vehicle control method may be a vehicle control device, such as a vehicle control unit (VCU), an electronic control unit (ECU), or any electronic device capable of executing related processing of the vehicle control method, and the embodiments of the present application do not specifically limit them.

[0027] See also Figure 1 , which shows a flow chart of the implementation of the vehicle control method provided by the embodiment of the present application, which is described in detail as follows:

[0028] Step 110: monitor the required power of the target vehicle; the target vehicle includes a first fuel cell system and a second fuel cell system, and the rated power of the first fuel cell system is greater than the rated power of the second fuel cell system.

[0029] In some embodiments, the first fuel cell system may be the aforementioned high-power system, and the second fuel cell may be the aforementioned low-power system. The required power may be the power output power required by the target vehicle in real time. For a vehicle with a fuel cell system, the power output power is mainly provided by the fuel cell system. In some cases, a portion of the power output power may be provided by the vehicle's power battery.

[0030] Step 120: When the required power is less than or equal to a preset power threshold, determine the first output power of the first fuel cell system according to the required power, the charge state value of the target vehicle and the preset power range information of the first fuel cell system, and control the first fuel cell system to provide the first output power.

[0031] In some embodiments, considering that the life and performance of the low-power system are relatively weak, and the power demand of the vehicle in many cases is not high, such as when the vehicle is driving on a level road, at this time, the output power can be provided only by the high-power system, thereby reducing the working time and the number of startups and shutdowns of the low-power system, thereby extending the service life of the low-power system. In this regard, two methods can be used to control the power of the high-power system and the low-power system, one is that the high-power system outputs power alone, and the other is that the high-power system and the low-power system output power together.

[0032] Specifically, the vehicle's required power can be divided by a preset power threshold to determine the triggering conditions of the above two methods. For example, the preset power threshold can be 100kw. When the required power is ≤100kw, the high-power system is used to output power alone; when the required power is >100kw, the high-power system and the low-power system are used to output power together.

[0033] In some embodiments, for the way that the high-power system outputs power alone, it can adopt a control interval method combined with the state of charge (SOC) of the power battery, that is, the output power is divided into several control intervals. When the required power changes within the control interval, if the power battery SOC is high, the lower limit of the control interval is used as the output power of the high-power system, and the power gap required for the required power is provided by the power battery; if the power battery SOC is low, the upper limit of the control interval is used as the output power of the high-power system, and the power exceeding the required power can be used to charge the power battery. In this way, when the required power changes within a certain control interval, the high-power system can output at a fixed power, thereby avoiding frequent load changes of the high-power system and effectively extending the service life of the high-power system. Furthermore, the power can be changed after a certain period of time after each power change, such as 1 minute, to suppress frequent load changes.

[0034] Taking the control interval of 75kw-100kw as an example, a control interval division method (in kw) of a high-power system with a rated power of 248kw is provided, as shown in Table 1.

[0035] Table 1

[0036] 25 50 75 100 125 150 175 200 225 240

[0037] In this way, the first output power of the first fuel cell system can be determined according to the state of charge value of the target vehicle and the preset power range information of the first fuel cell system, and the first fuel cell system can be controlled to provide the first output power.

[0038] In one possible implementation, the processing procedure for determining the first output power may be as follows: obtaining the first target power interval in which the required power is located in the preset power interval information; when the state of charge value is less than or equal to the first preset charge threshold, such as 40%, 45%, or any other value less than 50%, determining the upper limit value of the first target power interval as the first output power; when the state of charge value is greater than the first preset charge threshold, determining the lower limit value of the first target power interval as the first output power.

[0039] In some embodiments, if the upper limit of the first target power range is determined as the first output power, the first fuel cell system can be controlled to charge the power battery of the target vehicle according to the fourth output power, wherein the fourth output power is the value obtained by subtracting the required power from the first output power. In this way, the excess power can be replenished to the power battery.

[0040] In some embodiments, if the lower limit of the first target power range is determined as the first output power, the power battery of the target vehicle can be controlled to provide a fifth output power, wherein the fifth output power is the value obtained by subtracting the first output power from the required power. In this way, the power battery can provide the shortfall of the required power.

[0041] It is worth mentioning that, considering that the power battery may be in a stage of consuming power or replenishing power during driving, the SOC of the power battery may change from a state higher than the first preset charge threshold to a state lower than the first preset charge threshold, or from a state lower than the first preset charge threshold to a state higher than the first preset charge threshold. In this regard, the output power of the high-power system will also change accordingly. The change process of the high-power system is specifically introduced below.

[0042] In a possible implementation, after controlling the first fuel cell system to charge the power battery of the target vehicle according to the fourth output power, the state of charge value of the power battery can be monitored. When the state of charge value is monitored to be greater than the second preset charge threshold, such as 50% or a value greater than the first preset charge threshold, at this time, the state of charge of the power battery is in a high state, and it is more appropriate for the power battery to provide a part of the required power. In this regard, the first output power can be updated to the lower limit value of the first target power range, and the first fuel cell system can be controlled to stop charging the power battery.

[0043] In a possible implementation, after the power battery of the target vehicle is controlled to provide the fifth output power, the state of charge value of the power battery can be monitored. When the state of charge value is monitored to be less than the third preset charge threshold value, such as 30% or a value less than the first preset charge threshold value, at this time, the state of charge of the power battery is in a lower state and is no longer suitable for providing output power. In this regard, the first output power can be updated to the upper limit value of the first target power range, and the first fuel cell system can be controlled to charge the power battery of the target vehicle according to the sixth output power, and the sixth power is the value obtained by subtracting the required power from the updated first output power.

[0044] For example, assuming that the target vehicle's power demand at a certain moment is 80kw, and the SOC at this time is greater than 40%, according to the control interval division in Table 1, the high-power system outputs power according to the lower limit of the corresponding control interval, that is, outputs 75kw, and the remaining 5kw is increased by the power battery. As the vehicle travels, the SOC continues to decrease. When the SOC is less than 30%, the high-power system adjusts the output power from 75kw to 100kw, and the extra 20kw is used to charge the power battery.

[0045] For another example, assuming that the target vehicle's power demand at a certain moment is 80kw, and the SOC at this time is less than 40%, according to the control interval division in Table 1, the high-power system outputs power according to the upper limit of the corresponding control interval, that is, outputs 100kw, and the extra 20kw is used to charge the power battery. As the vehicle travels, the SOC continues to increase. When the SOC is greater than 50%, the high-power system adjusts the output power from 100kw to 75kw, and the remaining 5kw is provided by the power battery.

[0046] Step 130, when the required power is greater than a preset power threshold, determine the second output power of the first fuel cell system and the third output power of the second fuel cell system based on the required power, the charge state value of the target vehicle, the preset power range information of the first fuel cell system, and the preset power gear information of the second fuel cell system, and control the first fuel cell system to provide the second output power, and control the second fuel cell system to provide the third output power.

[0047] In some embodiments, since the low-power system is usually weaker than the high-power system in terms of load addition and reduction and life, it is more appropriate to use a gear division method for power output, that is, to select two to three commonly used operating points as gears. It should be noted that the minimum output power (lowest gear) of the low-power system should be higher than its idle power to reduce the problem of high single cell potential and accelerated carbon corrosion caused by long-term low power output, so as to increase the service life; the commonly used maximum output power (highest gear) is less than its rated power, and the high-power output working conditions of the small-power system are minimized to reduce the problem of catalyst loss and degradation caused by high-power operation, so as to increase the service life.

[0048] For example, for a small power system with a rated power of 110kw, the gears can be divided into 30kw-70kw-100kw.

[0049] In this way, for the mode in which the high-power system and the low-power system output power together, the high-power system is started first, and the low-power system starts stable output only when the required power reaches the set value. Specifically, the second output power of the first fuel cell system and the third output power of the second fuel cell system can be determined according to the required power, the state of charge value of the target vehicle, the preset power interval information of the first fuel cell system, and the preset power gear information of the second fuel cell system.

[0050] In a possible implementation, the specific processing of determining the second output power of the first fuel cell system and the third output power of the second fuel cell system can be as follows: First, according to the preset correspondence relationship of the power gears corresponding to different required powers, the target power gear corresponding to the required power in the preset power gear information is obtained, and the target power gear is determined as the third output power of the second fuel cell system. Afterwards, according to the required power and the target power gear, the second target power range of the first fuel cell system is obtained. Finally, if the state of charge value is less than or equal to the preset charge threshold, the upper limit value of the second target power range is determined as the third output power; if the state of charge value is greater than the preset charge threshold, the lower limit value of the second target power range is determined as the third output power.

[0051] In some embodiments, the second target power range can be obtained in the following manner: First, the difference between the required power and the target power level is obtained, and then the power range where the difference is located in the preset power range information is determined as the second target power range.

[0052] It should be noted that, for the charging process of the power battery corresponding to the second target power range and the process of adjusting the upper and lower limits of the high-power system, reference may be made to the corresponding introduction of the first target power range, which will not be repeated here.

[0053] For ease of understanding, the following takes a high-power system with a rated power of 248kw and a low-power system with a rated power of 110kw as examples to introduce the way in which the high-power system and the low-power system output power together.

[0054] For the condition that the vehicle is on a level road and the speed exceeds the average speed, the vehicle's required power will usually increase. Assuming 100kw≤required power≤248kw, both the high-power system and the low-power system are started, among which the low-power system outputs 30kw constantly, and the high-power system outputs the rest of the power in the aforementioned separate output mode. At this time, the low-power system is just working in the high-efficiency range, which is conducive to saving hydrogen, and the maximum power output of the high-power system is lower than its rated power, which is also conducive to extending its service life.

[0055] For conditions such as vehicles overtaking at high speed on a horizontal road or climbing a slope at high speed, assuming that 248kw < demand ≤ 310kw, the small power system outputs 70kw, and the large power system outputs the remaining power in the aforementioned separate output mode. At this time, the large power system still has some power remaining, which is beneficial to prolonging its service life.

[0056] For the working condition of 310kw<demand power≤340kw, the low-power system outputs 100kw, and the high-power system outputs the rest of the power in the aforementioned separate output mode. The high-power system and the low-power system reach the upper limit of their control range or power level at most, and neither reaches their rated output power. In this way, both the high-power system and the low-power system can avoid the high-power output phenomenon, which is conducive to extending the service life of the high-power system and the low-power system.

[0057] It should be noted that, for extreme working conditions where the required power is greater than 340kw, the output is directly based on the rated power of the high-power system and the low-power system, that is, the high-power system outputs 248kw and the low-power system outputs 110kw.

[0058] In the embodiment of the present application, two power control modes are provided according to the magnitude relationship between the required power and the preset power threshold, namely, a control mode of outputting power of the high-power system alone according to the required power, the state of charge value of the target vehicle and the preset power interval information of the first fuel cell system, and a control mode of outputting power together according to the required power, the state of charge value of the target vehicle, the preset power interval information of the first fuel cell system and the preset power gear information of the second fuel cell system. In this way, the control mode of the small power system of the high-power system can be optimized, which can not only reduce the working range of the high-power system and the number of load changes, but also increase the operating time of the small power system, thereby increasing the service life of the high-power system and the small power system.

[0059] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0060] The following is an embodiment of the device of the present application. For details not described in detail, please refer to the corresponding method embodiment described above.

[0061] Figure 2 The structure diagram of the vehicle control device provided by the embodiment of the present invention is shown. For the convenience of description, only the part related to the embodiment of the present application is shown, which is described in detail as follows:

[0062] like Figure 2 As shown, the vehicle control device includes:

[0063] The monitoring module 210 is used to monitor the required power of a target vehicle; the target vehicle includes a first fuel cell system and a second fuel cell system, and the rated power of the first fuel cell system is greater than the rated power of the second fuel cell system;

[0064] The first control module 220 is used to determine the first output power of the first fuel cell system according to the required power, the state of charge value of the target vehicle and the preset power range information of the first fuel cell system when the required power is less than or equal to the preset power threshold, and control the first fuel cell system to provide the first output power;

[0065] The second control module 230 is used to determine the second output power of the first fuel cell system and the third output power of the second fuel cell system according to the required power, the charge state value of the target vehicle, the preset power range information of the first fuel cell system and the preset power gear information of the second fuel cell system when the required power is greater than the preset power threshold, and to control the first fuel cell system to provide the second output power and control the second fuel cell system to provide the third output power.

[0066] In a possible implementation manner, the first control module is further configured to:

[0067] Obtaining a first target power interval in which the required power is located in the preset power interval information;

[0068] When the state of charge value is less than or equal to the first preset charge threshold, determining the upper limit value of the first target power range as the first output power;

[0069] When the state of charge value is greater than the first preset charge threshold, the lower limit value of the first target power interval is determined as the first output power.

[0070] In a possible implementation manner, the first control module is further configured to:

[0071] The first fuel cell system is controlled to charge a power battery of the target vehicle according to a fourth output power, where the fourth output power is a value obtained by subtracting the required power from the first output power.

[0072] In a possible implementation manner, the first control module is further configured to:

[0073] When it is monitored that the state of charge value is greater than the second preset charge threshold value, the first output power is updated to the lower limit value of the first target power range, and the first fuel cell system is controlled to stop charging the power battery;

[0074] The second preset charge threshold is greater than the first preset charge threshold.

[0075] In a possible implementation manner, the first control module is further configured to:

[0076] The power battery of the target vehicle is controlled to provide a fifth output power, where the fifth output power is a value obtained by subtracting the first output power from the required power.

[0077] In a possible implementation manner, the first control module is further configured to:

[0078] When it is monitored that the state of charge value is less than the third preset charge threshold value, the first output power is updated to the upper limit value of the first target power range, and the first fuel cell system is controlled to charge the power battery of the target vehicle according to the sixth output power, where the sixth output power is the value obtained by subtracting the required power from the updated first output power;

[0079] The third preset charge threshold is smaller than the first preset charge threshold.

[0080] In a possible implementation manner, the second control module is further configured to:

[0081] According to the preset corresponding relationship, the target power level corresponding to the required power in the preset power level information is obtained, and the target power level is determined as the third output power of the second fuel cell system; wherein the preset corresponding relationship records the power levels corresponding to different required powers;

[0082] Obtaining a second target power range of the first fuel cell system according to the required power and the target power level;

[0083] When the state of charge value is less than or equal to the preset charge threshold, determining the upper limit value of the second target power range as the second output power;

[0084] When the state of charge value is greater than the preset charge threshold, the lower limit value of the second target power interval is determined as the second output power.

[0085] In a possible implementation manner, the second control module is further configured to:

[0086] Obtain the difference between the required power and the target power level;

[0087] The power interval in which the difference value is located in the preset power interval information is determined as the second target power interval.

[0088] The present application also provides a computer program product having a program code, which executes the steps of any of the above vehicle control method embodiments when the program code is run in a corresponding processor, controller, computing device or terminal, such as Figure 1 Steps 110 to 130 shown. It will be appreciated by those skilled in the art that the method and the device proposed in the embodiment of the present application can be implemented in various forms of hardware, software, firmware, a dedicated processor or a combination thereof. The dedicated processor may include an application specific integrated circuit (ASIC), a reduced instruction set computer (RISC) and / or a field programmable gate array (FPGA). The proposed method and device are preferably implemented as a combination of hardware and software. The software is preferably installed on a program storage device as an application. It is typically based on a machine with a computer platform having hardware, such as one or more central processing units (CPUs), random access memories (RAMs) and one or more input / output (I / O) interfaces. An operating system is typically also installed on the computer platform. The various processes and functions described here may be part of an application, or a part thereof may be executed by an operating system.

[0089] Figure 3 Schematic diagram of an electronic device 3 provided in an embodiment of the present application. Figure 3 As shown, the electronic device 3 of this embodiment includes: a processor 30, a memory 31, and a computer program 32 stored in the memory 31 and executable on the processor 30. When the processor 30 executes the computer program 32, the steps in the above-mentioned vehicle control method embodiments are implemented, such as Figure 1 Alternatively, when the processor 30 executes the computer program 32, the functions of each module in the above-mentioned device embodiments are realized, for example, Figure 2 The functions of the modules 210 to 230 are shown.

[0090] Exemplarily, the computer program 32 may be divided into one or more modules, which are stored in the memory 31 and executed by the processor 30 to complete the present application. The one or more modules may be a series of computer program instruction segments that can complete specific functions, and the instruction segments are used to describe the execution process of the computer program 32 in the electronic device 3. For example, the computer program 32 may be divided into Figure 2 Modules 210 to 230 are shown.

[0091] The electronic device 3 may include, but is not limited to, a processor 30 and a memory 31. Those skilled in the art will appreciate that Figure 3 It is only an example of the electronic device 3 and does not constitute a limitation of the electronic device 3. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the electronic device may also include input and output devices, network access devices, buses, etc.

[0092] The processor 30 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0093] The memory 31 may be an internal storage unit of the electronic device 3, such as a hard disk or memory of the electronic device 3. The memory 31 may also be an external storage device of the electronic device 3, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the electronic device 3. Further, the memory 31 may also include both an internal storage unit and an external storage device of the electronic device 3. The memory 31 is used to store the computer program and other programs and data required by the electronic device. The memory 31 may also be used to temporarily store data that has been output or is to be output.

[0094] The present application also provides a vehicle, such as Figure 4 As shown, the vehicle 4 includes the aforementioned electronic device 3 .

[0095] The technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated in a processing unit, or each unit can exist physically separately, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, which will not be repeated here.

[0096] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0097] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0098] In the embodiments provided in the present application, it should be understood that the disclosed devices / terminal equipment and methods can be implemented in other ways. For example, the device / terminal equipment embodiments described above are only schematic. For example, the division of the modules or units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0099] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0100] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0101] If the integrated module is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of the above-mentioned vehicle control method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device that can carry the computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory (ROM, ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium, etc.

[0102] In addition, the features of the embodiments shown in the drawings of the present application or the various embodiments mentioned in this specification are not necessarily understood as independent embodiments. Instead, each feature described in one example of an embodiment can be combined with one or more other desired features from other embodiments to produce other embodiments not described in words or with reference to the drawings.

[0103] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A vehicle control method, characterized in that: include: Monitoring the required power of a target vehicle; the target vehicle includes a first fuel cell system and a second fuel cell system, and the rated power of the first fuel cell system is greater than the rated power of the second fuel cell system; When the required power is less than or equal to the preset power threshold, obtaining a first target power interval in which the required power is located in the preset power interval information; when the state of charge value is less than or equal to the first preset charge threshold, determining an upper limit value of the first target power interval as the first output power; When the state of charge value is greater than the first preset charge threshold, determining the lower limit value of the first target power range as the first output power, and controlling the first fuel cell system to provide the first output power; When the required power is greater than the preset power threshold, the target power level corresponding to the required power in the preset power level information is obtained according to the preset corresponding relationship, and the target power level is determined as the third output power of the second fuel cell system; wherein the preset corresponding relationship records the power levels corresponding to different required powers; according to the required power and the target power level, a second target power range of the first fuel cell system is obtained; when the state of charge value is less than or equal to the preset charge threshold, the upper limit value of the second target power range is determined as the second output power; when the state of charge value is greater than the preset charge threshold, the lower limit value of the second target power range is determined as the second output power; and the first fuel cell system is controlled to provide the second output power, and the second fuel cell system is controlled to provide the third output power.

2. The vehicle control method according to claim 1, characterized in that: After determining the upper limit value of the first target power interval as the first output power, the method further includes: The first fuel cell system is controlled to charge a power battery of the target vehicle according to a fourth output power, where the fourth output power is a value obtained by subtracting the required power from the first output power.

3. The vehicle control method according to claim 2, characterized in that: After controlling the first fuel cell system to charge the power battery of the target vehicle according to the fourth output power, the method further includes: When it is monitored that the state of charge value is greater than a second preset charge threshold, updating the first output power to a lower limit value of the first target power range, and controlling the first fuel cell system to stop charging the power battery; Wherein, the second preset charge threshold is greater than the first preset charge threshold.

4. The vehicle control method according to claim 1, characterized in that: After determining the lower limit value of the first target power interval as the first output power, the method further includes: The power battery of the target vehicle is controlled to provide a fifth output power, where the fifth output power is a value obtained by subtracting the first output power from the required power.

5. The vehicle control method according to claim 4, characterized in that: After controlling the power battery of the target vehicle to provide a fifth output power, the method further includes: When it is monitored that the state of charge value is less than a third preset charge threshold value, the first output power is updated to an upper limit value of the first target power range, and the first fuel cell system is controlled to charge the power battery of the target vehicle according to a sixth output power, where the sixth output power is a value obtained by subtracting the required power from the updated first output power; Wherein, the third preset charge threshold is smaller than the first preset charge threshold.

6. The vehicle control method according to claim 1, characterized in that: The step of acquiring a second target power range of the first fuel cell system according to the required power and the target power level includes: Obtaining a difference between the required power and the target power level; The power interval in which the difference value is located in the preset power interval information is determined as the second target power interval.

7. A vehicle control device, characterized in that: include: A monitoring module, used to monitor the required power of a target vehicle; the target vehicle includes a first fuel cell system and a second fuel cell system, and the rated power of the first fuel cell system is greater than the rated power of the second fuel cell system; a first control module, configured to determine a first output power of the first fuel cell system according to the required power, the state of charge value of the target vehicle and the preset power range information of the first fuel cell system, and control the first fuel cell system to provide the first output power when the required power is less than or equal to a preset power threshold; a second control module, for determining, when the required power is greater than the preset power threshold, a second output power of the first fuel cell system and a third output power of the second fuel cell system according to the required power, the state of charge value of the target vehicle, the preset power interval information of the first fuel cell system, and the preset power gear information of the second fuel cell system, and controlling the first fuel cell system to provide the first output power and controlling the second fuel cell system to provide the third output power; The first control module is specifically used for: Obtaining a first target power interval in which the required power is located in the preset power interval information; When the state of charge value is less than or equal to a first preset charge threshold, determining an upper limit value of the first target power range as the first output power; When the state of charge value is greater than the first preset charge threshold, determining a lower limit value of the first target power range as the first output power; The second control module is specifically used for: According to a preset corresponding relationship, obtaining a target power level corresponding to the required power in the preset power level information, and determining the target power level as the third output power of the second fuel cell system; wherein the preset corresponding relationship records the power levels corresponding to different required powers; Acquire a second target power range of the first fuel cell system according to the required power and the target power level; When the state of charge value is less than or equal to a preset charge threshold, determining an upper limit value of the second target power range as the second output power; When the state of charge value is greater than the preset charge threshold, a lower limit value of the second target power interval is determined as the second output power.

8. A vehicle, comprising an electronic device, the electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

Images