Control method and device for fuel cell of vehicle and vehicle

Abstract

The invention provides a control method and device for a fuel cell of a vehicle and the vehicle. The vehicle comprises a power battery electrically connected with a fuel battery. The fuel cell includes a coolant system. The control method comprises the steps that reference information and the remaining electric quantity of a power battery are obtained, wherein the reference information comprises at least one of the environment temperature, the cooling liquid temperature of a cooling liquid system and the altitude where a vehicle is located; determining a power interval where the power of the fuel cell is located according to the reference information and the residual electric quantity; the power interval comprises a first power interval and a second power interval; the maximum power of the second power interval is smaller than or equal to the minimum power of the first power interval; and controlling the fuel cell to output power in the power interval. In the fuel cell control process, the reference information is considered, and the output power of the fuel cell is in any pre-calibrated power interval, so that the output power of the fuel cell is more reasonable and efficient.

Description

Technical Field

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

[0002] A hydrogen fuel cell is a power generation device that directly converts the chemical energy of hydrogen and oxygen into electrical energy. Its basic principle is the reverse reaction of water electrolysis, supplying hydrogen and oxygen to the anode and cathode of the battery respectively. After hydrogen diffuses outward through the anode and reacts with the electrolyte, it releases electrons and reaches the cathode through an external load. With its advantages of high efficiency, zero emissions, and low noise, hydrogen fuel cells have become an important development trend in energy structure transformation, energy conservation and emission reduction, and automotive industry upgrading, and will become an important solution for sustainable urban and economic development.

[0003] For passenger vehicles with a dual energy system based on high-voltage power batteries and hydrogen fuel cells, how the various battery systems cooperate with each other and how to make the hydrogen fuel cells work more efficiently have become urgent issues to be resolved. Summary of the invention

[0004] The present application provides a control method and device for a fuel cell of a vehicle and a vehicle, which make the control of the fuel cell more reasonable and efficient.

[0005] The present application provides a control method for a fuel cell of a vehicle, wherein the vehicle includes a power battery electrically connected to the fuel cell, and the fuel cell includes a coolant system; the control method includes:

[0006] Acquiring reference information and the remaining power of the power battery, the reference information including at least one of an ambient temperature, a coolant temperature of the coolant system, and an altitude of the vehicle;

[0007] Determine, according to the reference information and the remaining power, a power interval in which the power of the fuel cell is located; the power interval includes a first power interval and a second power interval; the maximum power of the second power interval is less than or equal to the minimum power of the first power interval;

[0008] The fuel cell is controlled to output power within the power range.

[0009] Optionally, the reference information includes an ambient temperature; and determining the power range of the fuel cell power according to the reference information and the remaining power includes:

[0010] If the ambient temperature is lower than the ambient temperature threshold, and the remaining power is lower than the first power threshold, determining that the power of the fuel cell is in the first power range;

[0011] If the ambient temperature is lower than the ambient temperature threshold, and the remaining power is higher than the first power threshold and lower than the second power threshold, determine that the power of the fuel cell is in the second power range;

[0012] If the ambient temperature is lower than the ambient temperature threshold, and the remaining power is higher than the second power threshold, determine that the power of the fuel cell is zero.

[0013] Optionally, the reference information includes the altitude at which the vehicle is located; the determining the power range in which the power of the fuel cell is located according to the reference information and the remaining power includes:

[0014] If the altitude is higher than the altitude threshold and the remaining power is lower than the first power threshold, determine that the power of the fuel cell is in the first power range;

[0015] If the altitude is higher than the altitude threshold, and the remaining power is higher than the first power threshold and lower than the second power threshold, determine that the power of the fuel cell is in the second power range;

[0016] If the altitude is higher than the altitude threshold, and the remaining power is higher than the second power threshold, determine that the power of the fuel cell is zero.

[0017] Optionally, the reference information includes the coolant temperature of the coolant system; the determining the power range in which the power of the fuel cell is located according to the reference information and the remaining power includes:

[0018] If the coolant temperature is lower than the coolant temperature threshold, and the remaining power is lower than the first power threshold, determine that the power of the fuel cell is in the first power range;

[0019] If the coolant temperature is lower than the coolant temperature threshold, and the remaining power is higher than the first power threshold and lower than the second power threshold, determine that the power of the fuel cell is in the second power range;

[0020] If the coolant temperature is lower than the coolant temperature threshold, and the remaining power is higher than the second power threshold, determine that the power of the fuel cell is zero.

[0021] Optionally, the reference information includes the ambient temperature, the coolant temperature of the coolant system, and the altitude at which the vehicle is located; the power range includes a third power range, and the maximum power of the third power range is less than or equal to the minimum power of the second power range;

[0022] The determining the power range in which the power of the fuel cell is located according to the reference information and the remaining power includes:

[0023] If the ambient temperature is higher than the ambient temperature threshold, the altitude is lower than the altitude threshold, the coolant temperature is higher than the coolant temperature threshold, and the remaining power is lower than the third power threshold, it is determined that the power of the fuel cell is in the first power range;

[0024] If the ambient temperature is higher than the ambient temperature threshold, the altitude is lower than the altitude threshold, the coolant temperature is higher than the coolant temperature threshold, and the remaining power is higher than the third power threshold and lower than the fourth power threshold, it is determined that the power of the fuel cell is in the second power range;

[0025] If the ambient temperature is higher than the ambient temperature threshold, the altitude is lower than the altitude threshold, the coolant temperature is higher than the coolant temperature threshold, and the remaining power is higher than the fourth power threshold and lower than the fifth power threshold, it is determined that the power of the fuel cell is in the third power range;

[0026] If the ambient temperature is higher than the ambient temperature threshold, the altitude is lower than the altitude threshold, the coolant temperature is higher than the coolant temperature threshold, and the remaining power is higher than the fifth power threshold, it is determined that the power of the fuel cell is zero.

[0027] Optionally, the first power range is 90% - 100% of the full power of the fuel cell.

[0028] Optionally, the second power range is 60% - 70% of the full power of the fuel cell.

[0029] Optionally, the third power range is 30% - 50% of the full power of the fuel cell.

[0030] Optionally, the ambient temperature threshold, the coolant temperature threshold, and the altitude threshold are calibrated according to the vehicle model.

[0031] The present application provides a computer-readable storage medium, on which a program is stored. When the program is executed by a processor, it implements the control method of the fuel cell of the vehicle described in any one of the above.

[0032] The present application provides a control device for a fuel cell of a vehicle, including one or more processors, for implementing the control method of the fuel cell of the vehicle described in any one of the above.

[0033] The present application further provides a vehicle, including:

[0034] A fuel cell;

[0035] A power battery, electrically connected to the fuel cell;

[0036] The control device as described above is communicatively connected to the fuel cell.

[0037] In some embodiments, the vehicle includes a fuel cell and a power battery. The power range of the fuel cell includes a first power range and a second power range. The reference information includes at least one of the ambient temperature, the coolant temperature of the coolant system of the fuel cell, and the altitude at which the vehicle is located. According to the reference information and the remaining power of the power battery, the power range in which the power of the fuel cell is located is determined. The power output by the fuel cell is in any of the pre-calibrated power ranges, reducing the frequent change of the fuel cell power. The reference information affects the power of the fuel cell. In this way, the power of the fuel cell can be in the high-efficiency power range as much as possible under different reference information.

[0038] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit this application. Brief Description of the Drawings

[0039] The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application.

[0040] Figure 1 The structural block diagram of an embodiment of the vehicle of this application is shown.

[0041] Figure 2 The flowchart of an embodiment of the control method of the fuel cell of the vehicle of this application is shown.

[0042] Figure 3 As shown Figure 2 The flowchart of an embodiment of the step "determine the power range in which the power of the fuel cell is located according to the reference information and the remaining power" of the control method of the fuel cell of the vehicle shown is shown.

[0043] Figure 4 The structural block diagram of the control device of the fuel cell of the vehicle provided by the embodiment of this application is shown. Detailed Description of Specific Embodiments

[0044] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. On the contrary, they are only examples of the devices and methods consistent with some aspects of this application as detailed in the appended claims.

[0045] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit the application. Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meanings as understood by those of ordinary skill in the field to which this application pertains. The terms "first", "second" and similar words used in the specification and claims of this application do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "a" or "an" do not denote a limitation of quantity, but mean that there is at least one. "Plurality" or "several" means two or more. Unless otherwise specified, words such as "front part", "rear part", "lower part" and / or "upper part" are for convenience of description only and are not limited to one position or a spatial orientation. Words such as "comprising" or "including" mean that the elements or items appearing before "comprising" or "including" cover the elements or items listed after "comprising" or "including" and their equivalents, and do not exclude other elements or items. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, and may include electrical connections, whether direct or indirect.

[0046] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit the application. The singular forms "a", "the" and "said" used in this application and the appended claims are also intended to include the plural forms unless the context clearly dictates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0047] The vehicle according to an embodiment of this application includes a power battery electrically connected to a fuel cell. The fuel cell includes a coolant system. The control method includes: obtaining reference information and the remaining power of the power battery, where the reference information includes at least one of the ambient temperature, the coolant temperature of the coolant system, and the altitude at which the vehicle is located; determining the power range in which the power of the fuel cell is located according to the reference information and the remaining power; the power range includes a first power range and a second power range; the maximum power of the second power range is less than or equal to the minimum power of the first power range; and controlling the fuel cell to output power within the power range. In the process of controlling the fuel cell in this application, the reference information is considered, and the power output by the fuel cell is in any of the pre-calibrated power ranges, making the power output of the fuel cell more reasonable and efficient.

[0048] This application provides a control method, device and vehicle for a fuel cell of a vehicle. The following will describe in detail the control method, device and vehicle for the fuel cell of the vehicle according to this application with reference to the accompanying drawings. Without conflict, the features in the following embodiments and implementation manners can be combined with each other.

[0049] Figure 1 The structural block diagram of an embodiment of the vehicle 10 of the present application is shown.

[0050] The vehicle 10 of the embodiment of the present application includes, but is not limited to, sedans, SUVs, MPVs, off-road vehicles, pickup trucks or other power-driven non-railborne vehicles. The vehicle 10 includes hybrid new energy vehicles and other vehicles that use in-vehicle power batteries as the main power source or one of the power sources.

[0051] As Figure 1 shown, the vehicle 10 includes: a fuel cell 11, a power battery 12, and a control device 13. In some embodiments, the fuel cell 11 includes a hydrogen fuel cell. The fuel cell 11 includes a coolant system for cooling the fuel cell 11. The coolant includes water. The power battery 12 is electrically connected to the fuel cell 11. When the fuel cell 11 is in the startup state, the fuel cell 11 can supply power to the power battery 12. The power battery 12 is electrically connected to the motor (not shown) of the vehicle 10 to supply power to the motor and drive the motor to move. The fuel cell 11 is electrically connected to the motor (not shown) of the vehicle 10, and the fuel cell 11 can drive the motor to move. The power battery 12 includes a lithium battery. The control device 13 is communicatively connected to the fuel cell 11. The control device 13 is used to control the operation of the fuel cell 11. The control device 13 is used to execute the control method of the present application.

[0052] The vehicle 10 further includes a battery management system 14 and a vehicle controller 17. The battery management system 14 is electrically connected to the power battery 12 and the vehicle controller 17 for monitoring and controlling the power battery 12. The vehicle controller 17 is the core control unit of the vehicle 10, which interacts with devices such as the motor controller, steer-by-wire system, and light-by-wire system of the vehicle 10, and makes reasonable instructions through the processing of the received information to achieve vehicle control. The control device 13 is electrically connected to the battery management system 14 and the vehicle controller 17 for receiving the signals of the battery management system 14 and the vehicle controller 17 and controlling the fuel cell 11 accordingly.

[0053] Figure 2 The flowchart of an embodiment of the control method 20 of the fuel cell of the vehicle of the present application is shown. The control device 13 is used to execute the control method 20 of the present application.

[0054] The control method 20 of the fuel cell of the vehicle includes:

[0055] Step 21, obtaining reference information and the remaining power of the power battery 12. The reference information includes at least one of the ambient temperature, the coolant temperature of the coolant system, and the altitude where the vehicle 10 is located.

[0056] The ambient temperature, the coolant temperature of the coolant system, and the altitude at which the vehicle 10 is located may affect the output power of the fuel cell 11 and the power battery 12 of the vehicle 10 .

[0057] In some embodiments, the vehicle 10 includes an ambient temperature sensor, which is electrically connected to the control device 13, and the control device 13 obtains the ambient temperature according to the temperature detected by the ambient temperature sensor; the ambient temperature sensor can also be electrically connected to the vehicle controller 17, and the control device 13 obtains the signal of the ambient temperature sensor through the vehicle controller 17. The coolant system includes a coolant temperature sensor, which is electrically connected to the control device 13, and the control device 13 obtains the coolant temperature according to the temperature detected by the coolant temperature sensor. The vehicle 10 includes a barometer, and the control device 13 obtains the altitude of the vehicle 10 according to the air pressure detected by the barometer.

[0058] The remaining power of the power battery 12 can be obtained through the signal sent by the battery management system 14 .

[0059] Step 22: Determine the power interval of the fuel cell 11 according to the reference information and the remaining power. The power interval includes a first power interval and a second power interval. The maximum power of the second power interval is less than or equal to the minimum power of the first power interval.

[0060] The power interval is the interval in which the fuel cell 11 operates at a high efficiency point. The power interval is pre-calibrated according to the efficiency characteristics of the fuel cell 11. The power interval may be different depending on the vehicle model. In addition to the first power interval and the second power interval, the power interval may include other power intervals. Based on the reference information and the remaining power, the control device 13 determines the power interval in which the power of the fuel cell 11 that meets the current reference information and the current remaining power is located.

[0061] Step 23, controlling the fuel cell 11 to output power within a power range.

[0062] The fuel cell 11 is controlled to output power within the power range determined in step 22 , so that the power output by the fuel cell 11 is in a high-efficiency power range under the current reference information and the current remaining power.

[0063] In some embodiments, the power range of the power of the fuel cell 11 is determined based on the reference information and the remaining power of the power battery 12, and the power output of the fuel cell 11 is in any pre-calibrated power range, thereby reducing the frequent changes in the power of the fuel cell 11. The reference information affects the power of the fuel cell 11, so that the power of the fuel cell 11 can be as much as possible in the high-efficiency power range under different reference information.

[0064] In some embodiments, the reference information includes ambient temperature. Step 22 includes:

[0065] If the ambient temperature is lower than the ambient temperature threshold and the remaining power is lower than the first power threshold, it is determined that the power of the fuel cell 11 is in the first power range;

[0066] If the ambient temperature is lower than the ambient temperature threshold, the remaining power is higher than the first power threshold and lower than the second power threshold, it is determined that the power of the fuel cell 11 is in the second power range;

[0067] If the ambient temperature is lower than the ambient temperature threshold and the remaining power is higher than the second power threshold, it is determined that the power of the fuel cell 11 is zero.

[0068] The ambient temperature threshold can be calibrated according to the vehicle model. In some embodiments, the ambient temperature threshold is 0 °C. When the ambient temperature is different, the control strategy for the fuel cell 11 is different. When the ambient temperature is lower, the fuel cell 11 can be controlled to output greater power when the remaining power is more, which helps the vehicle 10 to travel in a low-temperature environment. Thus, the control of the fuel cell 11 is more in line with the actual use scenario. When the ambient temperature is lower than the ambient temperature threshold, the remaining power of the power battery 12 is judged. The first power threshold and the second power threshold can be calibrated according to the vehicle model and stored in the control device 13. In some embodiments, the first power threshold is 25% and the second power threshold is 45%.

[0069] In some embodiments, during the start-up and driving of the vehicle 10, the first power threshold and the second power threshold can be different. During start-up, the fuel cell 11 can be made to output power when the remaining power is more, so that the start-up performance of the vehicle 10 can be improved and the start-up can be accelerated.

[0070] When the remaining power is lower than the first power threshold, the fuel cell 11 is controlled to output power in the first power range. When the remaining power is higher than the first power threshold and lower than the second power threshold, the fuel cell 11 is controlled to output power in the second power range. When the remaining power of the power battery 12 is more, the power output by the fuel cell 11 is controlled to become smaller. When the remaining power is higher than the second power threshold, the fuel cell 11 is controlled to turn off, which can save energy, prevent overcharging of the power battery 12, and make the fuel cell 11 work more reasonably. The first power range and the second power range are the high-efficiency ranges of the fuel cell 11. When the power of the fuel cell 11 is in the first power range or the second power range, the fuel cell 11 works more efficiently.

[0071] In some embodiments, the reference information includes the altitude at which the vehicle 10 is located. Step 22 includes:

[0072] If the altitude is higher than the altitude threshold and the remaining power is lower than the first power threshold, it is determined that the power of the fuel cell 11 is in the first power range;

[0073] If the altitude is higher than the altitude threshold, the remaining power is higher than the first power threshold and lower than the second power threshold, it is determined that the power of the fuel cell 11 is in the second power range;

[0074] If the altitude is higher than the altitude threshold and the remaining power is higher than the second power threshold, it is determined that the power of the fuel cell 11 is zero.

[0075] The altitude threshold can be calibrated according to the vehicle model. In some embodiments, the altitude threshold is 1000 m. When the altitude where the vehicle 10 is located is different, the control strategy for the fuel cell 11 is different. When the altitude is higher, the fuel cell 11 can be controlled to output greater power when the remaining power is more, which helps the vehicle 10 to travel in a high-altitude environment. In this way, the control of the fuel cell 11 is more in line with the actual usage scenario. When the altitude is higher than the altitude threshold, the remaining power of the power battery 12 is judged. According to the remaining power, the fuel cell 11 is controlled to output power in any power range, so that the fuel cell 11 works more reasonably. The power of the fuel cell 11 is in the first power range or the second power range, making the fuel cell 11 work more efficiently.

[0076] In some embodiments, the reference information includes the coolant temperature of the coolant system. Step 22 includes:

[0077] If the coolant temperature is lower than the coolant temperature threshold and the remaining power is lower than the first power threshold, it is determined that the power of the fuel cell 11 is in the first power range;

[0078] If the coolant temperature is lower than the coolant temperature threshold, the remaining power is higher than the first power threshold and lower than the second power threshold, it is determined that the power of the fuel cell 11 is in the second power range;

[0079] If the coolant temperature is lower than the coolant temperature threshold and the remaining power is higher than the second power threshold, it is determined that the power of the fuel cell 11 is zero.

[0080] The coolant temperature threshold can be calibrated according to the vehicle model. In some embodiments, the coolant temperature threshold is 10 °C. When the coolant temperature of the fuel cell 11 is different, the control strategy for the fuel cell 11 is different. When the coolant temperature is higher, the fuel cell 11 can be controlled to output smaller power when the remaining power is less, which can prevent the fuel cell 11 from overheating and improve the service life of the fuel cell 11. In this way, the control of the fuel cell 11 is more in line with the actual usage scenario. When the coolant temperature is lower than the coolant temperature threshold, the remaining power of the power battery 12 is judged. According to the remaining power, the fuel cell 11 is controlled to output power in any power range, so that the fuel cell 11 works more reasonably. The power of the fuel cell 11 is in the first power range or the second power range, making the fuel cell 11 work more efficiently.

[0081] Figure 3As shown Figure 2 A flowchart of an embodiment of step 22 of the control method 20 of the fuel cell of the vehicle shown

[0082] In this embodiment, the reference information includes the ambient temperature, the coolant temperature of the coolant system, and the altitude at which the vehicle 10 is located

[0083] The power range includes a third power range, and the maximum power of the third power range is less than or equal to the minimum power of the second power range. If the ambient temperature is higher than the ambient temperature threshold, the altitude is lower than the altitude threshold, and the coolant temperature is higher than the coolant temperature threshold, step 22 includes: steps 221 to 227. In some embodiments, the ambient temperature threshold, the coolant temperature threshold, and the altitude threshold are calibrated according to the vehicle model of the vehicle 10

[0084] Step 221, determine whether the remaining power of the power battery 12 is lower than the third power threshold

[0085] If the remaining power is lower than the third power threshold, execute step 222 to determine that the power of the fuel cell 11 is in the first power range

[0086] If the remaining power is higher than the third power threshold, execute step 223 to determine whether the remaining power is lower than the fourth power threshold

[0087] If the remaining power is lower than the fourth power threshold, execute step 224 to determine that the power of the fuel cell 11 is in the second power range

[0088] If the remaining power is higher than the fourth power threshold, execute step 225 to determine whether the remaining power is lower than the fifth power threshold

[0089] If the remaining power is lower than the fifth power threshold, execute step 226 to determine that the power of the fuel cell 11 is in the third power range

[0090] If the remaining power is higher than the fifth power threshold, execute step 227 to determine that the power of the fuel cell 11 is zero

[0091] If the ambient temperature is higher than the ambient temperature threshold, the altitude is lower than the altitude threshold, and the coolant temperature is higher than the coolant temperature threshold, the power of the fuel cell 11 is divided into three intervals: the first power interval, the second power interval, and the third power interval. The third power threshold, the fourth power threshold, and the fifth power threshold can be calibrated according to the vehicle model and stored in the control device 13. The third power threshold can be equal to or different from the first power threshold. The fifth power threshold can be equal to or different from the second power threshold. In some embodiments, the third power threshold is 20%, the fourth power threshold is 30%, and the fifth power threshold is 45%. In some embodiments, during vehicle 10 startup and driving, the third power threshold, the fourth power threshold, and the fifth power threshold can be different. During startup, the fuel cell 11 can output power when the remaining power is more, which can improve the startup performance of the vehicle 10 and accelerate startup.

[0092] When the remaining power is lower than the third power threshold, control the fuel cell 11 to output power in the first power interval. When the remaining power is higher than the third power threshold and lower than the fourth power threshold, control the fuel cell 11 to output power in the second power interval. When the remaining power is higher than the fourth power threshold and lower than the fifth power threshold, control the fuel cell 11 to output power in the third power interval. When the remaining power of the power battery 12 is more, control the power output by the fuel cell 11 to become smaller. When the remaining power is higher than the fifth power threshold, control the fuel cell 11 to turn off, which can save energy, prevent overcharging of the power battery 12, and make the fuel cell 11 work more reasonably. The first power interval, the second power interval, and the third power interval are high-efficiency intervals of the fuel cell 11. When the power of the fuel cell 11 is in the first power interval or the second power interval or the third power interval, the fuel cell 11 works more efficiently.

[0093] In some embodiments, the first power interval is 90% - 100% of the full power of the fuel cell 11.

[0094] In some embodiments, the second power interval is 60% - 70% of the full power of the fuel cell 11.

[0095] In some embodiments, the third power interval is 30% - 50% of the full power of the fuel cell 11.

[0096] 90% - 100%, 60% - 70%, and 30% - 50% of the full power of the fuel cell 11 are high-efficiency power intervals obtained according to the efficiency characteristics of the fuel cell 11. Taking the above power intervals as the first power interval, the second power interval, and the third power interval respectively can make the fuel cell 11 operate in the high-efficiency region and improve the efficiency of the fuel cell 11.

[0097] Figure 4The following is a block diagram of a control device 13 for a fuel cell of a vehicle provided by an embodiment of the present application.

[0098] As Figure 4 shown, the control device 13 includes one or more processors 31 for implementing the control method 20 for a fuel cell of a vehicle as described above.

[0099] In some embodiments, the control device 13 for a fuel cell of a vehicle may include a computer-readable storage medium 32. The computer-readable storage medium 32 may store a program that can be called by the processor 31 and may include a non-volatile storage medium. In some embodiments, the control device 13 for a fuel cell of a vehicle may include a memory 33 and an interface 34. In some embodiments, the control device 13 for a fuel cell of a vehicle may further include other hardware according to actual applications.

[0100] The computer-readable storage medium 32 of the embodiment of the present application stores a program thereon. When the program is executed by the processor 31, it is used to implement the control method 20 for a fuel cell of a vehicle as described above.

[0101] The present application may take the form of a computer program product implemented on one or more computer-readable storage media 32 (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing program code. The computer-readable storage medium 32 includes permanent and non-permanent, removable and non-removable media, and can implement information storage by any method or technology. The information may be computer-readable instructions, data structures, program modules, or other data. Examples of the computer-readable storage medium 32 include but are not limited to: phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassette tapes, magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information accessible by a computing device.

[0102] Those skilled in the art will readily think of other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the present application that follow the general principles of the present application and include known common knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the present application are pointed out by the following claims.

[0103] It should be understood that the present application is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A control method for a fuel cell of a vehicle, characterized in that, The vehicle includes a power battery electrically connected to the fuel cell, and the fuel cell includes a coolant system; the control method includes: Obtaining reference information and the remaining power of the power battery, where the reference information includes at least one of the ambient temperature, the coolant temperature of the coolant system, and the altitude at which the vehicle is located; Determining the power range in which the power of the fuel cell is located according to the reference information and the remaining power; the power range includes a first power range and a second power range; the maximum power of the second power range is less than or equal to the minimum power of the first power range; Controlling the fuel cell to output power within the power range.

2. The control method according to claim 1, wherein, The reference information includes the ambient temperature; determining the power range in which the power of the fuel cell is located according to the reference information and the remaining power includes: If the ambient temperature is lower than the ambient temperature threshold and the remaining power is lower than the first power threshold, determining that the power of the fuel cell is in the first power range; If the ambient temperature is lower than the ambient temperature threshold and the remaining power is higher than the first power threshold and lower than the second power threshold, determining that the power of the fuel cell is in the second power range; If the ambient temperature is lower than the ambient temperature threshold and the remaining power is higher than the second power threshold, determining that the power of the fuel cell is zero.

3. The control method according to claim 1, characterized in that The reference information includes the altitude at which the vehicle is located; determining the power range in which the power of the fuel cell is located according to the reference information and the remaining power includes: If the altitude is higher than the altitude threshold and the remaining power is lower than the first power threshold, determining that the power of the fuel cell is in the first power range; If the altitude is higher than the altitude threshold and the remaining power is higher than the first power threshold and lower than the second power threshold, determining that the power of the fuel cell is in the second power range; If the altitude is higher than the altitude threshold and the remaining power is higher than the second power threshold, determining that the power of the fuel cell is zero.

4. The control method according to claim 1, wherein The reference information includes the coolant temperature of the coolant system; determining the power range in which the power of the fuel cell is located according to the reference information and the remaining power includes: If the coolant temperature is lower than the coolant temperature threshold and the remaining power is lower than the first power threshold, determining that the power of the fuel cell is in the first power range; If the coolant temperature is lower than the coolant temperature threshold and the remaining power is higher than the first power threshold and lower than the second power threshold, determining that the power of the fuel cell is in the second power range; If the coolant temperature is lower than the coolant temperature threshold and the remaining power is higher than the second power threshold, determining that the power of the fuel cell is zero.

5. The control method according to claim 1, wherein The reference information includes the ambient temperature, the coolant temperature of the coolant system, and the altitude at which the vehicle is located; the power range includes a third power range, and the maximum power of the third power range is less than or equal to the minimum power of the second power range; Determining the power range in which the power of the fuel cell lies according to the reference information and the remaining power includes: If the ambient temperature is higher than the ambient temperature threshold, the altitude is lower than the altitude threshold, the coolant temperature is higher than the coolant temperature threshold, and the remaining power is lower than the third power threshold, it is determined that the power of the fuel cell is in the first power range; If the ambient temperature is higher than the ambient temperature threshold, the altitude is lower than the altitude threshold, the coolant temperature is higher than the coolant temperature threshold, and the remaining power is higher than the third power threshold and lower than the fourth power threshold, it is determined that the power of the fuel cell is in the second power range; If the ambient temperature is higher than the ambient temperature threshold, the altitude is lower than the altitude threshold, the coolant temperature is higher than the coolant temperature threshold, and the remaining power is higher than the fourth power threshold and lower than the fifth power threshold, it is determined that the power of the fuel cell is in the third power range; If the ambient temperature is higher than the ambient temperature threshold, the altitude is lower than the altitude threshold, the coolant temperature is higher than the coolant temperature threshold, and the remaining power is higher than the fifth power threshold, it is determined that the power of the fuel cell is zero.

6. The control method according to claim 5, wherein The first power range is 90% - 100% of the full power of the fuel cell; and / or The second power range is 60% - 70% of the full power of the fuel cell; and / or The third power range is 30% - 50% of the full power of the fuel cell.

7. The control method according to claim 5, characterized in that The ambient temperature threshold, the coolant temperature threshold, and the altitude threshold are calibrated according to the vehicle model.

8. A computer-readable storage medium, characterized in that, It stores a program which, when executed by a processor, implements the control method of the fuel cell of the vehicle according to any one of claims 1 - 7.

9. A control device for a fuel cell of a vehicle, characterized in that, It includes one or more processors for implementing the control method of the fuel cell of the vehicle according to any one of claims 1 - 7.

10. A vehicle, characterized in that, It includes: A fuel cell; A power battery electrically connected to the fuel cell ； The control device according to claim 9, communicatively connected to the fuel cell.

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