Fuel cell system warming-up control method, device, equipment and medium
By determining the target heating current based on the current and target coolant temperature in the fuel cell system and controlling the current loading during the warm-up stage, the problem of low heating control efficiency of fuel cell system in the prior art is solved, and a more efficient warm-up process is achieved.
Patent Information
- Application Number
- CN202311489813.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-09
- Publication Date
- 2025-05-13
AI Technical Summary
The warm-up control method of existing fuel cell systems has the problem of low overall operation efficiency.
The target heating current is determined based on the current coolant temperature and the target coolant temperature of the fuel cell system, and the current pulling of the fuel cell system is controlled respectively in the first warm-up stage and the second warm-up stage to accurately adjust the coolant temperature.
Accurate control of the heating current and heating time of the fuel cell system during the warm-up process is achieved, the overall operating efficiency during the warm-up process is improved, fuel waste is reduced, and energy utilization is improved.
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Figure CN119994108A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of fuel cell technology, and in particular to a fuel cell system warm-up control method, device, equipment and medium. Background Art
[0002] In a fuel cell system, water thermal management is crucial to the fuel cell system, especially in cold weather environments. If the coolant temperature in the fuel cell system is too low, it will affect the normal operation of the fuel cell system. Therefore, after the fuel cell system is started, the coolant temperature in the fuel cell system needs to be adjusted to a suitable operating temperature. This process is called warm-up. The warm-up control strategy for the fuel cell system is closely related to the overall operating efficiency of the fuel cell system. However, the current warm-up control strategy often has the problem of low overall operating efficiency of the fuel cell system. Summary of the invention
[0003] The present application provides a fuel cell system warm-up control method, device, equipment and medium, which are used to solve the problem of low overall operating efficiency of the fuel cell system in the warm-up control method in the prior art. Specifically, the technical solution provided by the present application is as follows:
[0004] On the one hand, the present application provides a fuel cell system warm-up control method, comprising:
[0005] determining a target heating current of the fuel cell system based on a current coolant temperature of the fuel cell system and a target coolant temperature;
[0006] Controlling the fuel cell system to enter a first warm-up phase, in which the fuel cell system is controlled to be loaded from a current operating current to a target heating current within a first time range;
[0007] The fuel cell system is controlled to enter a second warm-up phase. In the second warm-up phase, the fuel cell system is controlled to maintain operation at a target temperature rise current within a second time range to adjust a current coolant temperature of the fuel cell system to a target coolant temperature.
[0008] In a possible implementation, determining a target heating current of the fuel cell system based on a current coolant temperature and a target coolant temperature of the fuel cell system includes:
[0009] determining an initial heating current of the fuel cell system based on a temperature difference between a current coolant temperature and a target coolant temperature and a target heating time of the fuel cell system;
[0010] Based on the initial temperature increase current and the limit temperature increase current of the fuel cell system, a target temperature increase current of the fuel cell system is determined.
[0011] In a possible implementation, determining a target heating current of the fuel cell system based on the initial heating current and the limit heating current of the fuel cell system includes:
[0012] If it is determined that the initial temperature rise current is greater than or equal to the limit temperature rise current, the limit temperature rise current is determined as the target temperature rise current of the fuel cell system;
[0013] If it is determined that the initial temperature rise current is less than the limit temperature rise current, the initial temperature rise current is determined as the target temperature rise current of the fuel cell system.
[0014] In a possible implementation manner, before determining the target heating current of the fuel cell system based on the initial heating current and the limit heating current of the fuel cell system, the method further includes:
[0015] It is determined that the initial warm-up current is less than a currently requested current of the fuel cell system.
[0016] In a possible implementation manner, after controlling the fuel cell system to enter the second warm-up stage, the method further includes:
[0017] The fuel cell system is controlled to enter a current boosting phase. In the current boosting phase, the fuel cell system is controlled to pull the target temperature increase current to the current requested current within a third time range.
[0018] In a possible implementation, the fuel cell system warm-up control method provided in the present application further includes:
[0019] If it is determined that the initial heating current is greater than or equal to the current requested current of the fuel cell system, it is determined that the fuel cell system meets the self-heating condition, and the fuel cell system is controlled to be pulled from the current operating current to the current requested current, so that in the process of the fuel cell system being pulled from the current operating current to the current requested current, the current coolant temperature of the fuel cell system is adjusted to the target coolant temperature.
[0020] In a possible implementation manner, after determining the target heating current of the fuel cell system based on the current coolant temperature and the target coolant temperature of the fuel cell system, the method further includes:
[0021] Determining a first time range based on a target heating current and a current loading rate of the fuel cell system;
[0022] The second duration range is determined based on the target heating current and the target heating duration of the fuel cell system, the current requested current, and the current load rate.
[0023] On the other hand, the present application also provides a fuel cell system warm-up control device, comprising:
[0024] a current determination unit, configured to determine a target temperature rise current of the fuel cell system based on a current coolant temperature and a target coolant temperature of the fuel cell system;
[0025] A first control unit is used to control the fuel cell system to enter a first warm-up stage. In the first warm-up stage, the fuel cell system is controlled to load from a current operating current to a target heating current within a first time range;
[0026] The second control unit is used to control the fuel cell system to enter a second warm-up stage. In the second warm-up stage, the fuel cell system is controlled to maintain operation at a target heating current within a second time range to adjust the current coolant temperature of the fuel cell system to the target coolant temperature.
[0027] On the other hand, the present application also provides a fuel cell control device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the above-mentioned fuel cell system warm-up control method when executing the computer program.
[0028] On the other hand, the present application also provides a computer-readable storage medium, which stores computer instructions. When the computer instructions are executed by a processor, the above-mentioned fuel cell system warm-up control method is implemented.
[0029] The beneficial effects of this application are as follows:
[0030] The present application achieves precise control of the heating current and heating time during the warm-up process of the fuel cell system by controlling the fuel cell system to load from the current operating current to the target heating current within a first time range in a first warm-up stage, and controlling the fuel cell system to maintain operation at the target heating current within a second time range in a second warm-up stage. This can effectively improve the overall operating efficiency of the fuel cell system during the warm-up process, effectively reduce fuel waste of the fuel cell system during the warm-up process, and improve the energy utilization rate of the fuel cell system during the warm-up process.
[0031] Other features and advantages of the present application will be described in the subsequent description, and in part, will become apparent from the description, or will be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures specifically pointed out in the written description, claims, and drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
[0033] Figure 1A schematic diagram of the structure of a fuel cell system in an embodiment of the present application;
[0034] Figure 2 It is a schematic diagram of the overview of the fuel cell system warm-up control method in the embodiment of the present application;
[0035] Figure 3 This is a schematic diagram of a specific flow chart of a fuel cell system warm-up control method in an embodiment of the present application;
[0036] Figure 4 This is a functional structure diagram of a fuel cell system warm-up control device in an embodiment of the present application;
[0037] Figure 5 Schematic diagram of the hardware structure of the fuel cell control device in the embodiment of the present application. DETAILED DESCRIPTION
[0038] In order to make the purpose, technical solution and beneficial effects of this application clearer, the technical solution in the embodiment of this application will be clearly and completely described below in conjunction with the drawings in the embodiment of this application. Obviously, the described embodiment is only a part of the embodiment of this application, not all the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0039] In order to facilitate those skilled in the art to better understand the present application, the technical terms involved in the present application are briefly introduced below.
[0040] Fuel cell system, a power generation device that converts the chemical energy in a fuel and an oxidant into electrical energy, see Figure 1 As shown, the fuel cell system includes at least a fuel cell stack, an anode system for supplying fuel to the fuel cell stack, a cathode system for supplying oxidant to the fuel cell stack, and a cooling system for cooling the fuel cell stack, wherein the anode system includes at least a hydrogen proportion solenoid valve, a hydrogen circulation pump, a gas-liquid separator, and a nitrogen and water discharge valve, the cathode system includes at least an air filter, an air compressor, an intercooler, and an air humidifier, and the cooling system includes at least a radiator assembly, a heater, a water pump, a bypass valve, a first temperature sensor, and a second temperature sensor.
[0041] The current coolant temperature is the coolant temperature determined based on the stack coolant inlet temperature collected by the first temperature sensor and / or the stack coolant outlet temperature collected by the second temperature sensor.
[0042] The target coolant temperature is a pre-calibrated coolant temperature required for the normal operation of the fuel cell system.
[0043] The target heating time is the total time required for the pre-calibrated warm-up process of the fuel cell system.
[0044] The limiting temperature rise current is the maximum temperature rise current allowed by the fuel cell system which is pre-calibrated.
[0045] The current loading rate is the pre-calibrated current that the fuel cell system loads per unit time.
[0046] It should be noted that the "first", "second", etc. mentioned in this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be interchanged where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the "and / or" mentioned in this application describes the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.
[0047] After introducing the technical terms involved in this application, the application scenarios and design concepts of this application are briefly introduced.
[0048] In a fuel cell system, traditional warm-up strategies usually limit the power of the fuel cell system when operating at low temperatures by limiting the current of the fuel cell system when operating at low temperatures. It is difficult to accurately control the warm-up time and coolant temperature of the fuel cell system, which not only reduces the overall operating efficiency of the fuel cell system, but also causes fuel waste.
[0049] To this end, the present application determines the target heating current of the fuel cell system based on the current coolant temperature and the target coolant temperature of the fuel cell system, and controls the fuel cell system to be loaded from the current operating current to the target heating current within a first time range in a first warm-up phase, and controls the fuel cell system to maintain operation at the target heating current within a second time range in a second warm-up phase. This can achieve precise control of the heating current and heating time during the warm-up process of the fuel cell system, thereby effectively improving the overall operating efficiency of the fuel cell system during the warm-up process, effectively reducing fuel waste of the fuel cell system during the warm-up process, and improving the energy utilization rate of the fuel cell system during the warm-up process.
[0050] After introducing the application scenarios and design ideas of the present application, the technical solutions provided by the present application are described in detail below.
[0051] The present application provides a fuel cell system warm-up control method, which can be applied to a fuel cell control device in a fuel cell system, such as a fuel cell controller (FCU) in a fuel cell system. For details, see Figure 2 As shown, the overview process of the fuel cell system warm-up control method provided in the embodiment of the present application is as follows:
[0052] Step 201: Determine a target heating current of the fuel cell system based on a current coolant temperature and a target coolant temperature of the fuel cell system.
[0053] In practical applications, the target coolant temperature is the coolant temperature required for the normal operation of the fuel cell system; the current coolant temperature is the coolant temperature determined based on the stack coolant inlet temperature collected by the first temperature sensor and / or the stack coolant outlet temperature collected by the second temperature sensor. For example, the current coolant temperature may be the stack coolant inlet temperature collected by the first temperature sensor, or the stack coolant outlet temperature collected by the second temperature sensor, or the average coolant temperature determined based on the stack coolant inlet temperature collected by the first temperature sensor and the stack coolant outlet temperature collected by the second temperature sensor. The embodiment of the present application only takes "the current coolant temperature may be the stack coolant inlet temperature collected by the first temperature sensor" as an example for explanation. Based on the current coolant temperature and the target coolant temperature of the fuel cell system, the target heating current of the fuel cell system may be determined. Specifically, the following methods may be used but are not limited to:
[0054] First, based on the temperature difference between the current coolant temperature and the target coolant temperature and the target warming-up time of the fuel cell system, an initial warming-up current of the fuel cell system is determined.
[0055] In specific implementation, the correspondence between the heating current, the temperature difference and the heating time can be pre-calibrated. After the current coolant temperature and the target coolant temperature of the fuel cell system are determined, the heating current corresponding to the temperature difference between the current coolant temperature and the target coolant temperature and the target heating time of the fuel cell system can be determined as the initial heating current of the fuel cell system based on the correspondence between the heating current, the temperature difference and the heating time.
[0056] Then, based on the initial temperature increase current and the limit temperature increase current of the fuel cell system, a target temperature increase current of the fuel cell system is determined.
[0057] In the specific implementation, if it is determined that the initial heating current is greater than or equal to the limiting heating current, the limiting heating current is determined as the target heating current of the fuel cell system; if it is determined that the initial heating current is less than the limiting heating current, the initial heating current is determined as the target heating current of the fuel cell system.
[0058] It is worth mentioning that in the embodiment of the present application, in order to further reduce the fuel consumption during the warm-up process of the fuel cell system and improve the operating efficiency during the warm-up process of the fuel cell system, before determining the target warm-up current of the fuel cell system based on the initial warm-up current and the limit warm-up current of the fuel cell system, it is possible to first determine whether the initial warm-up current is less than the current requested current of the fuel cell system. When it is determined that the initial warm-up current is less than the current requested current of the fuel cell system, it can be determined that the fuel cell system does not meet the self-heating condition. At this time, the target warm-up current of the fuel cell system is determined based on the initial warm-up current and the limit warm-up current of the fuel cell system to perform subsequent warm-up operations. When it is determined that the initial warm-up current is greater than or equal to the current requested current of the fuel cell system, it can be determined that the fuel cell system meets the self-heating condition. At this time, the target warm-up current of the fuel cell system may no longer be determined based on the initial warm-up current and the limit warm-up current of the fuel cell system. Instead, the fuel cell system is controlled to be pulled from the current operating current to the current requested current, so that in the process of the fuel cell system being pulled from the current operating current to the current requested current, the current coolant temperature of the fuel cell system is adjusted to the target coolant temperature.
[0059] Step 202: Control the fuel cell system to enter a first warm-up phase. In the first warm-up phase, control the fuel cell system to load from a current operating current to a target heating current within a first time range.
[0060] In the embodiment of the present application, after determining the target heating current of the fuel cell system based on the initial heating current and the limiting heating current of the fuel cell system to perform subsequent warm-up operations, the fuel cell system can be controlled to enter the first warm-up stage. In the first warm-up stage, based on the target heating current and the current load rate of the fuel cell system, the following formula (1) is used to determine the first time range, and the fuel cell system is controlled to load from the current operating current to the target heating current within the first time range.
[0061] t 1 =I dcdc / k+1……Formula (1)
[0062] Among them, t 1 Characterizes the first time range; I dcdc represents the target heating current; k represents the current loading rate; 1 represents the adjustment parameter, which is a set value.
[0063] In a specific implementation, when controlling the fuel cell system to load from the current operating current to the target heating current within the first time range, the hydrogen proportion solenoid valve, hydrogen circulation pump, air compressor, heater, water pump and other devices in the fuel cell system can be controlled to operate to the target operating parameters corresponding to the target heating current, so as to achieve the load from the current operating current to the target heating current. For example, based on the correspondence between the pre-calibrated hydrogen proportion solenoid valve opening and the current, the hydrogen proportion solenoid valve opening corresponding to the target heating current is determined as the target opening, and the hydrogen proportion solenoid valve is controlled to be gradually adjusted from the current opening to the target opening. For example, based on the correspondence between the pre-calibrated hydrogen circulation pump speed and the current, the hydrogen circulation pump speed corresponding to the target heating current is determined as the target speed, and the hydrogen circulation pump is controlled to be gradually adjusted from the current speed to the target speed. For example, based on the correspondence between the pre-calibrated air compressor speed and the current, the air compressor speed corresponding to the target heating current is determined as the target speed, and the air compressor is controlled to be gradually adjusted from the current speed to the target speed, and so on.
[0064] Step 203: Control the fuel cell system to enter a second warm-up phase. In the second warm-up phase, control the fuel cell system to maintain operation at a target heating current within a second time range to adjust the current coolant temperature of the fuel cell system to the target coolant temperature.
[0065] In the embodiment of the present application, after controlling the fuel cell system to be loaded from the current operating current to the target heating current within the first time range, the fuel cell system can be controlled to enter the second warm-up stage. In the second warm-up stage, based on the target heating current and the target heating time of the fuel cell system, the current requested current and the current loading rate, the second time range is determined using the following formula (2), and the fuel cell system is controlled to maintain operation at the target heating current within the second time range.
[0066] t 2 =t 总 -[(I 请求 -I dcdc ) / k]-1……Formula (2)
[0067] Among them, t 2 Characterizes the second time range; I dcdc Characterizes the target temperature rise current; I 请求 Characterizes the current request current; t 总 represents the target heating time; k represents the current loading rate; 1 represents the adjustment parameter, which is a set value.
[0068] In a specific implementation, when controlling the fuel cell system to maintain operation at the target heating current within the second time range, the hydrogen proportion solenoid valve, hydrogen circulation pump, air compressor, heater, water pump and other devices in the fuel cell system can be controlled to maintain operation at the target operating parameters, so as to achieve the fuel cell system to maintain operation at the target heating current. For example, the hydrogen proportion solenoid valve is controlled to maintain operation at the target opening within the second time range. For example, the hydrogen circulation pump is controlled to maintain operation at the target speed within the second time range. For example, the air compressor is controlled to maintain operation at the target speed within the second time range, and so on. Thereby, the current coolant temperature of the fuel cell system can be adjusted to the target coolant temperature, thereby achieving precise control of the warm-up process of the fuel cell system.
[0069] Furthermore, after controlling the fuel cell system to maintain operation at the target heating current within the second time range, in order to meet the currently requested current, it is also necessary to control the fuel cell system to enter the current boosting stage. In the current boosting stage, the fuel cell system is controlled to pull from the target heating current to the currently requested current within the third time range.
[0070] In a specific implementation, the load durations between different currents can be pre-calibrated. In the current boosting stage, the load duration corresponding to the load from the target heating current to the current requested current can be determined as a third duration range based on the pre-calibrated load durations between different currents, and the fuel cell system can be controlled to load from the target heating current to the current requested current within the third duration range. Specifically, the hydrogen proportion solenoid valve, hydrogen circulation pump, air compressor, heater, water pump and other devices in the fuel cell system can be controlled to operate to the target operating parameters corresponding to the current requested current to achieve the load from the target heating current to the current requested current. For example, based on the pre-calibrated hydrogen proportion solenoid valve opening For example, based on the correspondence between the speed and the current, the opening of the hydrogen proportional solenoid valve corresponding to the current requested current is determined as the target opening, and the hydrogen proportional solenoid valve is controlled to be gradually adjusted from the current opening to the target opening. For another example, based on the correspondence between the pre-calibrated hydrogen circulation pump speed and the current, the speed of the hydrogen circulation pump corresponding to the current requested current is determined as the target speed, and the hydrogen circulation pump is controlled to be gradually adjusted from the current speed to the target speed. For another example, based on the pre-calibrated correspondence between the air compressor speed and the current, the speed of the air compressor corresponding to the current requested current is determined as the target speed, and the air compressor is controlled to be gradually adjusted from the current speed to the target speed, and so on.
[0071] The fuel cell system warm-up control method provided in the embodiment of the present application is further described in detail below. Figure 3 As shown, the specific process of the fuel cell system warm-up control method provided in the embodiment of the present application is as follows:
[0072] Step 301: Acquire the stack coolant inlet temperature collected by the first temperature sensor as the current coolant temperature of the fuel cell system.
[0073] Step 302: Determine an initial heating current of the fuel cell system based on a temperature difference between a current coolant temperature and a target coolant temperature and a target heating time of the fuel cell system.
[0074] Step 303 : Determine whether the initial heating current is greater than or equal to the current requested current of the fuel cell system. If so, execute step 304 ; if not, execute step 305 .
[0075] Step 304: Determine whether the fuel cell system meets the self-heating condition, control the fuel cell system to be loaded from the current operating current to the current requested current, and adjust the current coolant temperature of the fuel cell system to the target coolant temperature during the process of the fuel cell system being loaded from the current operating current to the current requested current.
[0076] Step 305: Determine whether the initial heating current is greater than or equal to the limiting heating current. If so, execute step 306; if not, execute step 307.
[0077] Step 306 : Determine the limit temperature rise current as the target temperature rise current of the fuel cell system, and proceed to step 308 .
[0078] Step 307 : Determine the initial heating current as the target heating current of the fuel cell system, and proceed to step 308 .
[0079] Step 308: Control the fuel cell system to enter the first warm-up stage. In the first warm-up stage, determine the first time range based on the target heating current and the current loading rate of the fuel cell system, and control the fuel cell system to load from the current operating current to the target heating current within the first time range.
[0080] Step 309: Control the fuel cell system to enter the second warm-up stage. In the second warm-up stage, determine the second time range based on the target heating current and the target heating time of the fuel cell system, the current requested current and the current load rate, and control the fuel cell system to maintain operation at the target heating current within the second time range.
[0081] Step 310: Control the fuel cell system to enter the current boosting stage. In the current boosting stage, based on the pre-calibrated load time between different currents, the load time corresponding to the load from the target heating current to the current requested current is determined as a third time range, and the fuel cell system is controlled to load from the target heating current to the current requested current within the third time range.
[0082] Based on the above embodiments, the present application also provides a fuel cell system warm-up control device, see Figure 4 As shown, the fuel cell system warm-up control device 400 provided in the embodiment of the present application at least includes:
[0083] A current determination unit 401, configured to determine a target heating current of the fuel cell system based on a current coolant temperature and a target coolant temperature of the fuel cell system;
[0084] The first control unit 402 is used to control the fuel cell system to enter a first warm-up stage. In the first warm-up stage, the fuel cell system is controlled to load from a current operating current to a target heating current within a first time range;
[0085] The second control unit 403 is used to control the fuel cell system to enter a second warm-up stage. In the second warm-up stage, the fuel cell system is controlled to maintain operation at a target heating current within a second time range to adjust the current coolant temperature of the fuel cell system to the target coolant temperature.
[0086] In one possible implementation, the current determination unit 401 is specifically used to determine the initial heating current of the fuel cell system based on the temperature difference between the current coolant temperature and the target coolant temperature and the target heating time of the fuel cell system; and to determine the target heating current of the fuel cell system based on the initial heating current and the limit heating current of the fuel cell system.
[0087] In one possible implementation, the current determination unit 401 is specifically used to determine the limiting heating current as the target heating current of the fuel cell system if it is determined that the initial heating current is greater than or equal to the limiting heating current; if it is determined that the initial heating current is less than the limiting heating current, then the initial heating current is determined as the target heating current of the fuel cell system.
[0088] In a possible implementation, the current determination unit 401 is further configured to determine that the initial temperature rise current is smaller than the current requested current of the fuel cell system.
[0089] In a possible implementation, the fuel cell system warm-up control device 400 provided in the embodiment of the present application further includes:
[0090] The third control unit 404 is used to control the fuel cell system to enter a current boosting phase. In the current boosting phase, the fuel cell system is controlled to pull the target temperature increase current to the current requested current within a third time range.
[0091] In a possible implementation manner, the fuel cell system warm-up control device provided in the embodiment of the present application further includes:
[0092] The fourth control unit 405 is used to determine that the fuel cell system meets the self-heating condition if it is determined that the initial heating current is greater than or equal to the current requested current of the fuel cell system, and control the fuel cell system to be pulled from the current operating current to the current requested current, so as to adjust the current coolant temperature of the fuel cell system to the target coolant temperature during the process of the fuel cell system being pulled from the current operating current to the current requested current.
[0093] In a possible implementation, the first control unit 402 is further configured to determine the first time range based on the target heating current and the current loading rate of the fuel cell system;
[0094] In a possible implementation, the second control unit 403 is further configured to determine the second duration range based on the target heating current and the target heating duration of the fuel cell system, the current requested current and the current load rate.
[0095] It should be noted that the principle of solving the technical problem by the fuel cell system warm-up control device 400 provided in the embodiment of the present application is similar to the fuel cell system warm-up control method provided in the embodiment of the present application. Therefore, the implementation of the fuel cell system warm-up control device 400 provided in the embodiment of the present application can refer to the implementation of the fuel cell system warm-up control method provided in the embodiment of the present application, and the repeated parts will not be repeated.
[0096] After introducing the fuel cell system warm-up control method and apparatus provided in the embodiments of the present application, the fuel cell control device provided in the embodiments of the present application is briefly introduced next.
[0097] The fuel cell control device provided in the embodiment of the present application may be, but is not limited to, an FCU, etc. For details, see Figure 5 As shown, the fuel cell control device 500 provided in the embodiment of the present application includes at least a processor 501, a memory 502, and a computer program stored in the memory 502 and executable on the processor 501. When the processor 501 executes the computer program, the above-mentioned fuel cell system warm-up control method provided in the embodiment of the present application is implemented.
[0098] The fuel cell control device 500 provided in the embodiment of the present application may also include a bus 503 connecting different components (including the processor 501 and the memory 502). The bus 503 represents one or more of several types of bus structures, including a memory bus, a peripheral bus, a local bus, and the like.
[0099] The memory 502 may include a readable medium in the form of a volatile memory, such as a random access memory (RAM) 5021 and / or a cache memory 5022, and may further include a read-only memory (ROM) 5023. The memory 502 may also include a program tool 5025 having a group (at least one) of program modules 5024, and the program modules 5024 include but are not limited to an operating subsystem, one or more application programs, other program modules, and program data, each of which or some combination may include the implementation of a network environment.
[0100] The processor 501 may be a processing element or a collective term for multiple processing elements. For example, the processor 501 may be a microcontroller unit (MCU), a central processing unit (CPU), or one or more integrated circuits configured to implement the intelligent photon mask control method provided in the embodiment of the present application. Specifically, the processor 501 may be a general-purpose processor, including but not limited to a CPU, an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
[0101] The fuel cell control device 500 can also communicate with one or more devices that enable a user to interact with the fuel cell control device 500 (such as a mobile phone, a computer, etc.), and / or various external devices 504 such as devices that enable the fuel cell control device 500 to communicate with one or more other fuel cell control devices (such as a router, a modem, etc.). Such communication can be performed through an input / output (I / O) interface 505. In addition, the fuel cell control device 500 can also communicate with one or more networks (such as a local area network (LAN), a wide area network (WAN) and / or a public network, such as the Internet) through a network adapter 506. Figure 5 As shown, the network adapter 506 communicates with other modules of the fuel cell control device 500 via the bus 503. It should be understood that although Figure 5Not shown, other hardware and / or software modules may be used in conjunction with the fuel cell control device 500, including but not limited to microcode, device drivers, redundant processors, external disk drive arrays, disk arrays (Redundant Arrays of Independent Disks, RAID) subsystems, tape drives, and data backup storage subsystems.
[0102] It should be noted that Figure 5 The fuel cell control device 500 shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.
[0103] Based on the above embodiments, an embodiment of the present application also provides a fuel cell system, which fuel cell system at least includes a fuel cell stack, an anode system for supplying hydrogen to the fuel cell stack, a cathode system for supplying air to the fuel cell stack, a cooling system for cooling the fuel cell stack, and the above-mentioned fuel cell control device provided in the embodiment of the present application.
[0104] In addition, an embodiment of the present application also provides a new energy vehicle, which includes at least a body, a chassis frame, wheels, a vehicle control system, and a power system, wherein the power system includes at least an electric motor and the above-mentioned fuel cell system provided in an embodiment of the present application.
[0105] In addition, the embodiment of the present application further provides a computer-readable storage medium, which stores computer instructions, and when the computer instructions are executed by the processor, the fuel cell system warm-up control method provided in the embodiment of the present application is implemented. Specifically, the computer instructions can be built-in or installed in the processor, so that the processor can implement the above-mentioned fuel cell system warm-up control method provided in the embodiment of the present application by executing the built-in or installed computer instructions.
[0106] Moreover, the fuel cell system warm-up control method provided in the embodiment of the present application can also be implemented as a program product, which includes a program code, and when the program code is executed by a processor, it implements the above-mentioned fuel cell system warm-up control method provided in the embodiment of the present application.
[0107] The program product provided in the embodiments of the present application may adopt any combination of one or more readable media, wherein the readable medium may be a readable signal medium or a readable storage medium, and the readable storage medium may be, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus or device, or any combination of the above. Specifically, more specific examples of readable storage media (a non-exhaustive list) include an electrical connection with one or more wires, a portable disk, a hard disk, RAM, ROM, Erasable Programmable Read Only Memory (EPROM), optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.
[0108] The program product provided in the embodiment of the present application may adopt a CD-ROM and include program code, and may also be run on a fuel cell control device such as an FCU. However, the program product provided in the embodiment of the present application is not limited thereto. In the embodiment of the present application, the readable storage medium may be any tangible medium containing or storing a program, and the program may be used by or in combination with an instruction execution system, apparatus, or device.
[0109] It should be noted that, although several units or subunits of the device are mentioned in the above detailed description, this division is merely exemplary and not mandatory. In fact, according to the embodiments of the present application, the features and functions of two or more units described above can be embodied in one unit. Conversely, the features and functions of one unit described above can be further divided into multiple units to be embodied.
[0110] In addition, although the operations of the method of the present application are described in a specific order in the drawings, this does not require or imply that the operations must be performed in this specific order, or that all the operations shown must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps.
[0111] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.
[0112] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.
Claims
1. A fuel cell system warm-up control method, characterized in that: include: determining a target heating current of the fuel cell system based on a current coolant temperature of the fuel cell system and a target coolant temperature; Controlling the fuel cell system to enter a first warm-up phase, and in the first warm-up phase, controlling the fuel cell system to pull from a current operating current to a target heating current within a first time range; The fuel cell system is controlled to enter a second warm-up phase. In the second warm-up phase, the fuel cell system is controlled to keep operating at the target heating current within a second time range to adjust the current coolant temperature of the fuel cell system to the target coolant temperature.
2. The fuel cell system warm-up control method according to claim 1, characterized in that: Determining a target heating current of the fuel cell system based on a current coolant temperature and a target coolant temperature of the fuel cell system includes: determining an initial heating current of the fuel cell system based on a temperature difference between the current coolant temperature and the target coolant temperature and a target heating time of the fuel cell system; Based on the initial temperature increase current and the limit temperature increase current of the fuel cell system, a target temperature increase current of the fuel cell system is determined.
3. The fuel cell system warm-up control method according to claim 2, characterized in that: Determining a target heating current of the fuel cell system based on the initial heating current and the limiting heating current of the fuel cell system includes: If it is determined that the initial temperature rise current is greater than or equal to the limit temperature rise current, the limit temperature rise current is determined as the target temperature rise current of the fuel cell system; If it is determined that the initial temperature-increasing current is less than the limit temperature-increasing current, the initial temperature-increasing current is determined as the target temperature-increasing current of the fuel cell system.
4. The fuel cell system warm-up control method according to claim 2 or 3, characterized in that: Before determining the target heating current of the fuel cell system based on the initial heating current and the limit heating current of the fuel cell system, the method further includes: The initial warm-up current is determined to be less than a current requested current of the fuel cell system.
5. The fuel cell system warm-up control method according to claim 4, characterized in that: After controlling the fuel cell system to enter the second warm-up stage, the method further includes: The fuel cell system is controlled to enter a current boosting phase. In the current boosting phase, the fuel cell system is controlled to be loaded from the target temperature increase current to the current request current within a third time range.
6. The fuel cell system warm-up control method according to claim 4, characterized in that: Also includes: If it is determined that the initial heating current is greater than or equal to the current requested current of the fuel cell system, it is determined that the fuel cell system meets the self-heating condition, and the fuel cell system is controlled to be pulled from the current operating current to the current requested current, so that the current coolant temperature of the fuel cell system is adjusted to the target coolant temperature during the process of the fuel cell system being pulled from the current operating current to the current requested current.
7. The fuel cell system warm-up control method according to claim 1, characterized in that: After determining the target heating current of the fuel cell system based on the current coolant temperature and the target coolant temperature of the fuel cell system, the method further includes: Determining the first time range based on the target heating current and the current loading rate of the fuel cell system; The second duration range is determined based on the target heating current, the target heating duration of the fuel cell system, the current requested current, and the current load rate.
8. A fuel cell system warm-up control device, characterized in that: include: a current determination unit, configured to determine a target temperature rise current of the fuel cell system based on a current coolant temperature and a target coolant temperature of the fuel cell system; A first control unit, configured to control the fuel cell system to enter a first warm-up phase, and in the first warm-up phase, control the fuel cell system to load from a current operating current to a target heating current within a first time range; A second control unit is used to control the fuel cell system to enter a second warm-up stage. In the second warm-up stage, the fuel cell system is controlled to keep operating at the target heating current within a second time range to adjust the current coolant temperature of the fuel cell system to the target coolant temperature.
9. A fuel cell control device, characterized in that: The method comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the fuel cell system warm-up control method as described in any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and when the computer instructions are executed by a processor, the fuel cell system warm-up control method according to any one of claims 1 to 7 is implemented.