Fuel cell temperature control method and device, electronic equipment and vehicle

Abstract

The invention relates to a fuel cell temperature control method and device, electronic equipment and a vehicle, and relates to the technical field of batteries, and the method comprises the following steps: obtaining operation parameters of a fuel cell; determining a flow resistance coefficient of the fuel cell, an inlet temperature control error of the fuel cell and a radiator outlet temperature based on the operation parameters of the fuel cell; and determining the target opening degree of the three-way valve based on the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell and the radiator outlet temperature. Therefore, the influence of the flow resistance coefficient on the temperature of the fuel cell in the use process of the fuel cell is considered, the target opening degree of the three-way valve is determined based on multiple factors such as the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell and the outlet temperature of the radiator, and the temperature control accuracy of the fuel cell is improved.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and particularly to a fuel cell temperature control method, device, electronic device, and vehicle. Background Art

[0002] With the increasing awareness of environmental protection, fuel cell vehicles have received extensive attention due to their zero-emission environmental advantages. Different from traditional engines or lithium batteries, the performance of fuel cells is extremely sensitive to temperature conditions, and the temperature of the fuel cell needs to be accurately controlled within a set temperature (that is, the difference between the actual temperature and the set temperature of the fuel cell is less than or equal to 2°C). However, there is a time lag in the process of adjusting the temperature of the fuel cell. At the same time, the output power of the fuel cell is also changing, and the heat dissipation capacity of the fuel cell thermal management system is different under different ambient temperatures, thus affecting the accuracy of the temperature control of the fuel cell.

[0003] In related technologies, by collecting the inlet and outlet temperatures of the fuel cell, the opening degree of the three-way valve is determined based on the inlet temperature, inlet temperature error, and inlet temperature error change rate of the fuel cell, and the temperature control of the fuel cell is achieved by controlling the opening degree of the three-way valve. In another related technology, the optimal coolant outlet temperature and the temperature difference between the inlet and outlet of the stack are determined based on the operating state of the fuel cell, and the closed-loop control of the coolant outlet temperature of the stack and the closed-loop control of the temperature difference between the inlet and outlet of the coolant of the stack are completed, and then the temperature of the fuel cell is controlled. Among them, the operating state of the fuel cell includes: the coolant inlet temperature to the stack, the coolant outlet temperature from the stack, the coolant inlet pressure to the stack, the stack air inlet pressure, the stack output current, and the ambient temperature. These two methods only consider controlling the temperature of the fuel cell by the stack temperature and coolant temperature of the fuel cell, and do not consider that during the use of the fuel cell, the pipeline of the thermal management system may be squeezed, resulting in an increase in flow resistance, thus affecting the accuracy of the temperature control of the fuel cell. Summary of the Invention

[0004] The purpose of the present invention is to provide a fuel cell temperature control method, device, electronic device, and vehicle, aiming to solve the technical problem of being unable to accurately control the temperature of the fuel cell.

[0005] To achieve the above purpose, the technical solutions adopted in the embodiments of the present application are as follows:

[0006] In a first aspect, an embodiment of the present application provides a fuel cell temperature control method, which includes: obtaining the operating parameters of the fuel cell; determining the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature based on the operating parameters of the fuel cell; and determining the target opening degree of the three-way valve based on the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature.

[0007] According to the above technical means, the flow resistance coefficient, the radiator outlet temperature, and the inlet temperature control error of the fuel cell are determined through the operating parameters of the fuel cell, taking into account the influence of the flow resistance coefficient on the temperature of the fuel cell. Based on the flow resistance coefficient of the fuel cell, the inlet temperature control error, and the radiator outlet temperature, the target opening degree of the three-way valve is determined, which can more accurately adjust the temperature of the fuel cell and improve the accuracy of the fuel cell temperature control method.

[0008] In a possible implementation, the operating parameters of the fuel cell include at least one of the following: the rated flow resistance coefficient of the fuel cell, the water pump speed, the opening degree of the three-way valve, the inlet water pressure of the fuel cell, the output power of the fuel cell, the radiator outlet temperature, and the actual inlet temperature of the fuel cell.

[0009] According to the above technical means, multiple factors such as the rated flow resistance coefficient of the fuel cell, the water pump speed, the opening degree of the three-way valve, the inlet water pressure of the fuel cell, the output power of the fuel cell, the radiator outlet temperature, and the actual inlet temperature of the fuel cell are considered, and the influence on the temperature of the fuel cell is analyzed more comprehensively, improving the accuracy of the fuel cell temperature control.

[0010] In a possible implementation, based on the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature, determining the target opening degree of the three-way valve includes: determining the PID control parameters based on the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature; determining the target opening degree of the three-way valve based on the PID control parameters, the inlet temperature control error, and the transformation rate of the inlet temperature control error; the transformation rate of the inlet temperature control error is determined based on the inlet temperature control error and the D-term delay period.

[0011] According to the above technical means, through multiple factors such as the flow resistance coefficient of the fuel cell, the inlet temperature control error, and the radiator outlet temperature, the PID control parameters can be determined more accurately. Combining the PID control parameters, the inlet temperature control error, and the transformation rate of the inlet temperature control error, the target opening degree of the three-way valve can be determined more accurately, which can more effectively reflect the change trend of the fuel cell inlet temperature, thereby reducing the time lag of the inlet temperature and improving the accuracy and stability of the fuel cell temperature control.

[0012] In a possible implementation, the D-term delay period is determined based on the output power of the fuel cell and the radiator outlet temperature; the D-term delay period is positively correlated with the radiator outlet temperature, and the D-term delay period is positively correlated with the output power of the fuel cell.

[0013] According to the above technical means, the outlet temperature of the radiator and the output power of the fuel cell directly affect the heat dissipation effect and temperature stability of the fuel cell. Changing the D-term delay period from 1 to be determined based on the outlet temperature of the radiator and the output power of the fuel cell can more accurately reflect the change trend of the fuel cell inlet temperature, reduce the time lag of the fuel cell temperature control method, and improve the accuracy and response accuracy of the fuel cell temperature control.

[0014] In a possible implementation, the PID control parameters are determined based on the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, the outlet temperature of the radiator, and a preset correspondence; the preset correspondence is used to reflect the PID control parameters corresponding to different values of the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the outlet temperature of the radiator.

[0015] According to the above technical means, determining the PID control parameters corresponding to different values of the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the outlet temperature of the radiator can more precisely control the temperature of the fuel cell, and thus help to extend the service life of the fuel cell.

[0016] In a possible implementation, the operating parameters of the fuel cell include the rated flow resistance coefficient of the fuel cell, the water pump speed, the opening degree of the three-way valve, and the inlet water pressure of the fuel cell; based on the operating parameters of the fuel cell, determining the flow resistance coefficient of the fuel cell includes: determining the change value of the flow resistance coefficient of the fuel cell based on the water pump speed, the opening degree of the three-way valve, and the inlet water pressure of the fuel cell; determining the flow resistance coefficient of the fuel cell based on the sum of the rated flow resistance coefficient of the fuel cell and the change value of the flow resistance coefficient of the fuel cell.

[0017] According to the above technical means, the water pump speed, the opening degree of the three-way valve, and the inlet water pressure can dynamically reflect the flow state of the fluid inside the fuel cell, so that the change value of the flow resistance coefficient can be determined more accurately, reducing the error of the fuel cell temperature control and improving the accuracy of the fuel cell temperature control method.

[0018] In a possible implementation, the flow resistance coefficient of the fuel cell satisfies the following formula: R = R ini +f(N act ,θ act ,P act ); where, R is used to represent the flow resistance coefficient of the fuel cell; R ini is used to represent the rated flow resistance coefficient of the fuel cell; N act is used to represent the water pump speed of the fuel cell; θ act is used to represent the opening degree of the three-way valve; P act is used to represent the inlet water pressure of the fuel cell.

[0019] Based on the above technical means, determining the flow resistance coefficient of the fuel cell based on the rated flow resistance coefficient and the change value of the flow resistance coefficient of the fuel cell can reflect the change of the flow resistance coefficient in real time, thereby improving the accuracy of the fuel cell temperature control.

[0020] In a possible implementation manner, the operating parameters of the fuel cell include the actual inlet temperature of the fuel cell and the output power of the fuel cell; determining the inlet temperature control error of the fuel cell based on the operating parameters of the fuel cell includes: determining the target inlet temperature of the fuel cell based on the output power of the fuel cell; wherein, the target inlet temperature of the fuel cell is positively correlated with the output power of the fuel cell; determining the inlet temperature control error of the fuel cell based on the difference between the target inlet temperature and the actual inlet temperature of the fuel cell.

[0021] Based on the above technical means, determining the target inlet temperature of the fuel cell based on the output power of the fuel cell helps to improve the performance of the fuel cell. Determining the inlet temperature control error of the fuel cell can more precisely control the temperature of the fuel cell, thereby helping to extend the service life of the fuel cell.

[0022] In a possible implementation manner, after determining the target opening of the three-way valve, the method further includes: controlling the opening of the three-way valve based on the target opening.

[0023] Based on the above technical means, controlling the opening of the three-way valve through the target opening can more precisely control the temperature of the fuel cell, reduce unnecessary heat energy loss, thereby reducing the energy consumption of the fuel cell and improving the service life of the fuel cell.

[0024] In a second aspect, an embodiment of the present application provides a fuel cell temperature control device, and the device includes: an acquisition module and a processing module.

[0025] The acquisition module is configured to acquire the operating parameters of the fuel cell;

[0026] The processing module is configured to determine the flow resistance coefficient, the radiator outlet temperature, and the inlet temperature control error of the fuel cell based on the operating parameters of the fuel cell; determine the target opening of the three-way valve based on the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature.

[0027] In a possible implementation manner, the operating parameters of the fuel cell include at least one of the following: the rated flow resistance coefficient of the fuel cell, the water pump speed, the opening of the three-way valve, the inlet water pressure of the fuel cell, the output power of the fuel cell, the radiator outlet temperature, and the actual inlet temperature of the fuel cell.

[0028] In a possible implementation, the processing module is specifically configured to determine PID control parameters based on the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature; determine the target opening degree of the three-way valve based on the PID control parameters, the inlet temperature control error of the fuel cell, and the transformation rate of the inlet temperature control error; the transformation rate of the inlet temperature control error is determined based on the inlet temperature control error and the D-term delay period.

[0029] In a possible implementation, the D-term delay period is determined based on the output power of the fuel cell and the radiator outlet temperature; the D-term delay period is positively correlated with the radiator outlet temperature, and the D-term delay period is positively correlated with the output power of the fuel cell.

[0030] In a possible implementation, the PID control parameters are determined based on the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, the radiator outlet temperature, and a preset correspondence; the preset correspondence is used to reflect the PID control parameters corresponding to different values of the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature.

[0031] In a possible implementation, the operating parameters of the fuel cell include the rated flow resistance coefficient of the fuel cell, the water pump speed, the opening degree of the three-way valve, and the inlet water pressure of the fuel cell; the processing module is specifically configured to determine the change value of the flow resistance coefficient of the fuel cell based on the water pump speed, the opening degree of the three-way valve, and the inlet water pressure of the fuel cell; determine the flow resistance coefficient of the fuel cell based on the sum of the rated flow resistance coefficient of the fuel cell and the change value of the flow resistance coefficient of the fuel cell.

[0032] In a possible implementation, the flow resistance coefficient of the fuel cell satisfies the following formula: R = R ini +f(N act ,θ act ,p act ); where R is used to represent the flow resistance coefficient of the fuel cell; R ini is used to represent the rated flow resistance coefficient of the fuel cell; N act is used to represent the water pump speed of the fuel cell; θ act is used to represent the opening degree of the three-way valve; P act is used to represent the inlet water pressure of the fuel cell.

[0033] In a possible implementation, the operating parameters of the fuel cell include the actual inlet temperature of the fuel cell and the output power of the fuel cell; the processing module is specifically configured to determine the target inlet temperature of the fuel cell based on the output power of the fuel cell; where the target inlet temperature of the fuel cell is positively correlated with the output power of the fuel cell; determine the inlet temperature control error of the fuel cell based on the difference between the target inlet temperature and the actual inlet temperature of the fuel cell.

[0034] In a possible implementation, after determining the target opening degree of the three-way valve, the processing module is further configured to control the opening degree of the three-way valve based on the target opening degree.

[0035] In a third aspect, an embodiment of the present application provides an electronic device, which includes: a processor and a memory; the memory stores instructions executable by the processor; when the processor is configured to execute the instructions, the electronic device implements the method of the first aspect described above.

[0036] In a fourth aspect, an embodiment of the present application provides a vehicle, which includes the electronic device of the third aspect described above.

[0037] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, on which computer program instructions are stored, and when the computer program instructions are executed by a processor, the fuel cell temperature control method according to any one of the embodiments provided in the first aspect is implemented.

[0038] In a sixth aspect, an embodiment of the present application provides a computer program product, which includes computer program instructions, and when the computer program instructions are executed by a processor, the fuel cell temperature control method according to any one of the embodiments provided in the first aspect is implemented.

[0039] It should be noted that the technical effects brought by any implementation manner in the second aspect to the sixth aspect can refer to the technical effects brought by the corresponding implementation manner in the first aspect, which will not be elaborated here.

[0040] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application, and do not constitute an improper limitation to the present application.

[0042] Figure 1 is a schematic structural diagram of a fuel cell temperature control system shown according to an exemplary embodiment;

[0043] Figure 2 is a flowchart of a fuel cell temperature control method shown according to an exemplary embodiment;

[0044] Figure 3 is a flowchart of another fuel cell temperature control method shown according to an exemplary embodiment;

[0045] Figure 4It is a flowchart of yet another fuel cell temperature control method shown according to an exemplary embodiment;

[0046] Figure 5 It is a flowchart of yet another fuel cell temperature control method shown according to an exemplary embodiment;

[0047] Figure 6 It is an internal framework diagram of a fuel cell shown according to an exemplary embodiment;

[0048] Figure 7 It is a flowchart of yet another fuel cell temperature control method shown according to an exemplary embodiment;

[0049] Figure 8 It is a block diagram of a fuel cell temperature control device shown according to an exemplary embodiment;

[0050] Figure 9 It is a block diagram of an electronic device shown according to an exemplary embodiment. Detailed implementation manners

[0051] To enable those of ordinary skill in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0052] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0053] In the embodiments of the present application, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, article or device. Without further limitation, an element defined by the phrase "including a..." does not exclude the existence of additional identical elements in the process, article or device including that element.

[0054] In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "for example" is intended to present relevant concepts in a specific manner.

[0055] As an efficient and clean energy conversion device, the performance and lifespan of a fuel cell are often affected by temperature. Therefore, temperature control of the fuel cell is particularly important. However, the temperature control of the fuel cell has a time lag, that is, it takes a certain amount of time for the temperature of the fuel cell to reach the expected state, resulting in a decrease in the accuracy of the fuel cell temperature control method. In addition, during the operation of the fuel cell, the continuous change of the output power directly affects the heat generation of the fuel cell, and further affects the temperature control.

[0056] In related technologies, in order to improve the accuracy of fuel cell temperature control, the outlet temperature of the fuel cell is controlled by adaptively adjusting the fan speed through PID, where the PID control parameters are related to the ambient temperature and the outlet temperature error. This method can improve the accuracy of fuel cell temperature control. However, it does not consider that during the use of the fuel cell, the pipeline of the thermal management system may be squeezed, resulting in an increase in flow resistance, thereby affecting the accuracy of fuel cell temperature control.

[0057] In view of this, the present application provides a fuel cell temperature control method, which acquires the operating parameters of the fuel cell; based on the operating parameters of the fuel cell, determines the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature; based on the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature, determines the target opening degree of the three-way valve, taking into account the influence of the flow resistance coefficient on the fuel cell temperature, thereby improving the accuracy of the fuel cell temperature control method.

[0058] For ease of understanding, the following specifically introduces the fuel cell temperature control method provided by the present application in conjunction with the accompanying drawings.

[0059] In some embodiments, in some embodiments, as Figure 1 shown, the fuel cell temperature control method provided by the embodiments of the present application can be implemented through a fuel cell temperature control system as Figure 1 shown. The fuel cell temperature control system includes: a controller 110, a collector 120, and a three-way valve 130, where the controller 110 is respectively connected to the collector 120 and the three-way valve 130.

[0060] In some embodiments, the collector 120 is used to collect the operating parameters of the fuel cell and send them to the collector 120.

[0061] Exemplarily, the operating parameters of the fuel cell include at least one of the following: the rated flow resistance coefficient of the fuel cell, the water pump speed, the opening degree of the three-way valve, the inlet water pressure of the fuel cell, the output power of the fuel cell, the radiator outlet temperature, and the actual inlet temperature of the fuel cell.

[0062] Exemplarily, the collector 120 can be a temperature sensor, a pressure sensor, a speed sensor, etc.

[0063] In some embodiments, the controller 110 is configured to determine the target opening degree of the three-way valve 130. Exemplarily, the controller 110 determines the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature based on the operating parameters of the fuel cell, and then determines the target opening degree of the three-way valve 130 through the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature.

[0064] Exemplarily, the controller 110 can be a server, such as a server cluster composed of multiple servers, or a single server, or a computer, or a processor or processing chip in the server or computer, etc.; alternatively, the controller 110 can also be a controller on the vehicle.

[0065] In some embodiments, the three-way valve 130 is configured to control the temperature of the fuel cell.

[0066] Exemplarily, the valve body of the three-way valve 130 is internally designed with three channel ports, including the fluid inlet, the first outlet, and the second outlet respectively, and the three-way valve 130 is configured to flexibly control the fluid flow direction and distribution ratio.

[0067] It should be noted that the system architecture described in the embodiments of the present application is for more clearly explaining the technical solutions of the embodiments of the present application, and does not constitute a limitation on the technical solutions provided by the embodiments of the present application. Those of ordinary skill in the art can know that with the evolution of the system architecture, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

[0068] Figure 2 is a flowchart of a fuel cell temperature control method shown according to an exemplary embodiment. The fuel cell temperature control method is applied to the controller 110 as shown in Figure 1 shown in, and as Figure 2 shown, the fuel cell temperature control method includes the following steps:

[0069] S201. Obtain the operating parameters of the fuel cell.

[0070] Among them, the operating parameters of the fuel cell include at least one of the following: the rated flow resistance coefficient of the fuel cell, the water pump speed, the opening degree of the three-way valve, the inlet water pressure of the fuel cell, the output power of the fuel cell, the radiator outlet temperature, and the actual inlet temperature of the fuel cell.

[0071] Exemplarily, the rated flow resistance coefficient is used to represent the flow resistance coefficient determined based on factors such as the pipeline geometry, fluid properties, and flow rate of the fuel cell under standard operating conditions. The rated flow resistance coefficient is used to reflect the magnitude of the resistance suffered by the fluid during flow under standard operating conditions, where the standard operating conditions are the operating conditions under which the fuel cell operates with the best operating data.

[0072] Exemplarily, the water pump is used to provide the power for fluid circulation; the water pump speed directly affects the flow rate and power of the fluid.

[0073] Exemplarily, the three-way valve is used to control the flow direction and distribution ratio of the fluid, and the flow direction and distribution ratio of the fluid can be flexibly adjusted by adjusting the opening degree of the three-way valve.

[0074] Exemplarily, the inlet water pressure is used to represent the pressure condition of the fluid entering the fuel cell; the inlet water pressure directly affects the flow rate and distribution of the fluid.

[0075] Exemplarily, the output power is used to represent the amount of electric energy that the fuel cell can output per unit time; the output power can be determined based on multiple factors such as the type, scale, and working conditions of the fuel cell, which are not limited here.

[0076] Exemplarily, the radiator outlet temperature is used to reflect the heat exchange efficiency of the fuel cell.

[0077] Exemplarily, the actual inlet temperature is used to represent the temperature of reaction gases such as hydrogen or oxygen entering the fuel cell.

[0078] It should be understood that by considering multiple factors such as the rated flow resistance coefficient, water pump speed, opening degree of the three-way valve, inlet water pressure of the fuel cell, output power of the fuel cell, radiator outlet temperature, and actual inlet temperature of the fuel cell, a more comprehensive analysis of the influence on the fuel cell temperature is carried out, improving the accuracy of fuel cell temperature control.

[0079] S202. Determine the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature based on the operating parameters of the fuel cell.

[0080] In some embodiments, the flow resistance coefficient of the fuel cell is determined based on the rated flow resistance coefficient and the change value of the flow resistance coefficient.

[0081] Exemplarily, the flow resistance coefficient is used to reflect the magnitude of the resistance suffered by the fluid during flow in the fuel cell pipeline.

[0082] Exemplarily, the value of the change in flow resistance coefficient is used to represent the difference value between the flow resistance coefficient and the rated flow resistance coefficient of the fuel cell during operation due to the change in operating conditions.

[0083] In some embodiments, the inlet temperature control error is used to reflect the difference between the actual inlet temperature and the target inlet temperature.

[0084] Exemplarily, the target inlet temperature is used to represent the desired inlet temperature set for the fuel cell during the process standard or experimental design.

[0085] S203. Determine the target opening degree of the three-way valve based on the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature.

[0086] In some embodiments, the target opening degree is used to represent the opening degree of the three-way valve that can effectively continuously reduce the inlet temperature control error of the fuel cell in the current set opening state.

[0087] It should be understood that determining the flow resistance coefficient, the radiator outlet temperature, and the inlet temperature control error of the fuel cell through the operating parameters of the fuel cell takes into account the influence of the flow resistance coefficient on the temperature of the fuel cell. Determining the target opening degree of the three-way valve based on the flow resistance coefficient, the inlet temperature control error, and the radiator outlet temperature of the fuel cell can more accurately adjust the temperature of the fuel cell and improve the accuracy of the fuel cell temperature control method.

[0088] In some embodiments, the operating parameters of the fuel cell include the rated flow resistance coefficient of the fuel cell, the water pump speed, the opening degree of the three-way valve, and the inlet water pressure of the fuel cell. As Figure 3 shown, the step of "determining the flow resistance coefficient of the fuel cell based on the operating parameters of the fuel cell" in the above step S202 can be specifically implemented as the following steps:

[0089] S301. Determine the change value of the flow resistance coefficient of the fuel cell based on the water pump speed, the opening degree of the three-way valve, and the inlet water pressure of the fuel cell.

[0090] It can be understood that the water pump speed, the opening degree of the three-way valve, and the inlet water pressure of the fuel cell jointly affect the flow state of the fluid inside the fuel cell. Therefore, the change value of the flow resistance coefficient can be determined.

[0091] Exemplarily, the inlet water pressure of the fuel cell can be determined based on the water pump speed and the opening degree of the three-way valve. For example, the water pump speed provides power for the fluid, and the opening degree of the three-way valve controls the flow direction and flow distribution of the fluid. By the combined action of the water pump speed and the opening degree of the three-way valve, the inlet water pressure is determined.

[0092] Exemplarily, under normal operating conditions of the fuel cell, there is a stable corresponding relationship among the water pump speed, the opening degree of the three-way valve, and the inlet water pressure. When the water pump speed, the opening degree of the three-way valve, and the inlet water pressure do not satisfy the stable corresponding relationship, abnormalities occur in the pipeline of the fuel cell. Among them, the abnormal conditions include: pipeline blockage, fluid leakage, or pipeline inner wall scaling of the fuel cell, etc.

[0093] Exemplarily, the stable corresponding relationship can be determined based on the design and operating characteristics of the fuel cell, which is not limited herein.

[0094] Exemplarily, assume that the water pump speed of the fuel cell is N act1 , the opening degree of the three-way valve is θ act1 , and the inlet water pressure of the fuel cell is P act1 . After the fuel cell operates for a period of time, the water pump speed of the fuel cell is equal to or close to N act1 , the opening degree of the three-way valve is equal to or close to θ act1 . However, there is an obvious deviation between the inlet water pressure of the fuel cell and P act1 , which proves that abnormalities occur in the pipeline of the fuel cell. At this time, the flow resistance coefficient is not equal to the rated flow resistance coefficient. The change value of the flow resistance coefficient can be determined based on the actual values of the water pump speed, the opening degree of the three-way valve, and the inlet water pressure of the fuel cell.

[0095] Exemplarily, the change value of the flow resistance coefficient can satisfy the following formula (1):

[0096] Change value of flow resistance coefficient = f(N act , θ act , P act ) Formula (1)

[0097] Wherein, N act is used to represent the water pump speed of the fuel cell; θ act is used to represent the opening degree of the three-way valve; P act1 is used to represent the inlet water pressure of the fuel cell, and f is used to represent the functional relationship between the water pump speed, the opening degree of the three-way valve, and the inlet water pressure of the fuel cell and the change value of the flow resistance coefficient of the fuel cell.

[0098] S302. Determine the flow resistance coefficient of the fuel cell based on the sum of the rated flow resistance coefficient of the fuel cell and the change value of the flow resistance coefficient of the fuel cell.

[0099] It should be noted that although the rated flow resistance coefficient is determined during the design of the fuel cell, however, during the actual operation of the fuel cell, due to various uncontrollable factors, there is a deviation between the actual flow resistance coefficient of the fuel cell and the rated flow resistance coefficient. Therefore, it is necessary to monitor the change value of the flow resistance coefficient in real time to determine the actual flow resistance coefficient of the fuel cell.

[0100] In some embodiments, the flow resistance coefficient of the fuel cell may satisfy the following formula (2):

[0101] R = R ini + f(N act , θ act , P act ) Formula (2)

[0102] Wherein, R is used to represent the flow resistance coefficient of the fuel cell; R ini is used to represent the rated flow resistance coefficient of the fuel cell; N act is used to represent the pump speed of the fuel cell; θ act is used to represent the opening degree of the three-way valve; P act is used to represent the inlet water pressure of the fuel cell.

[0103] It should be understood that the pump speed, the opening degree of the three-way valve, and the inlet water pressure can dynamically reflect the flow state of the fluid inside the fuel cell, so as to more accurately determine the change value of the flow resistance coefficient, reduce the error of fuel cell temperature control, and improve the accuracy of the fuel cell temperature control method.

[0104] In some embodiments, the operating parameters of the fuel cell include the actual inlet temperature of the fuel cell and the output power of the fuel cell. As Figure 4 shown, the step of "determining the inlet temperature control error of the fuel cell based on the operating parameters of the fuel cell" in the above step S202 can be specifically implemented as the following steps:

[0105] S401. Determine the target inlet temperature of the fuel cell based on the output power of the fuel cell.

[0106] In some embodiments, the target inlet temperature of the fuel cell is positively correlated with the output power of the fuel cell. Exemplarily, as the output power increases, the target inlet temperature of the fuel cell increases accordingly.

[0107] It should be noted that as the output power increases, the target inlet temperature of the fuel cell may increase in a gradient manner.

[0108] Exemplarily, the target inlet temperature of the fuel cell may satisfy the following formula (3):

[0109] T tar = f(P) Formula (3)

[0110] Wherein, T tar is used to represent the target inlet temperature of the fuel cell; P is used to represent the output power of the fuel cell.

[0111] S402. Determine the inlet temperature control error of the fuel cell based on the difference between the target inlet temperature and the actual inlet temperature of the fuel cell.

[0112] In some embodiments, the inlet temperature control error of the fuel cell can satisfy the following formula (4):

[0113] ΔT t0 = T tar - T act Formula (4)

[0114] Wherein, ΔT t0 is used to represent the inlet temperature control error of the fuel cell; T tar is used to represent the target inlet temperature of the fuel cell; T act is used to represent the actual inlet temperature.

[0115] It should be noted that the inlet temperature control error of the fuel cell can directly reflect the accuracy of the fuel cell temperature control.

[0116] It should be understood that determining the target inlet temperature of the fuel cell based on the output power of the fuel cell helps to improve the performance of the fuel cell. Determining the inlet temperature control error of the fuel cell can more accurately control the temperature of the fuel cell, thereby helping to extend the service life of the fuel cell.

[0117] In some embodiments, as Figure 5 shown, the above step S203 can be specifically implemented as the following steps:

[0118] S2031. Determine the PID control parameters based on the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature.

[0119] In some embodiments, the PID control parameters are determined based on the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, the radiator outlet temperature, and a preset corresponding relationship.

[0120] Wherein, the preset corresponding relationship is used to reflect the PID control parameters corresponding to different values of the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature.

[0121] Exemplarily, the preset corresponding relationship can be determined by querying a pre-configured database, or the preset corresponding relationship is a function expression determined through a large number of experiments. The present application does not limit the acquisition method of the preset corresponding relationship. It should be noted that the database is used to store the preset corresponding relationship for querying.

[0122] In some embodiments, the PID control parameters include: proportional control coefficient, integral control coefficient, and differential control coefficient.

[0123] Exemplarily, the proportional control coefficient can satisfy the following formula (5):

[0124] K P = f p (R, T rad_act , ΔT t0 ) Equation (5)

[0125] Wherein, K P is used to represent the proportional control coefficient, R is used to represent the flow resistance coefficient, T rad_act is used to represent the radiator outlet temperature, ΔT t0 is used to represent the inlet temperature control error.

[0126] Exemplarily, the integral control coefficient can satisfy the following Equation (6):

[0127] K I = f I (R, T rad_act , ΔT t0 ) Equation (6)

[0128] Wherein, K I is used to represent the integral control coefficient, R is used to represent the flow resistance coefficient, T rad_act is used to represent the radiator outlet temperature, ΔT t0 is used to represent the inlet temperature control error.

[0129] Exemplarily, the derivative control coefficient can satisfy the following Equation (7):

[0130] K D = f D (R, T rad_act , ΔT t0 ) Equation (7)

[0131] Wherein, K D is used to represent the derivative control coefficient, R is used to represent the flow resistance coefficient, T rad_act is used to represent the radiator outlet temperature, ΔT t0 is used to represent the inlet temperature control error.

[0132] It should be understood that determining the PID control parameters corresponding to different values of the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature can more precisely control the temperature of the fuel cell, thereby helping to extend the service life of the fuel cell.

[0133] S2032. Determine the target opening degree of the three-way valve based on the PID control parameter, the inlet temperature control error of the fuel cell, and the transformation rate of the inlet temperature control error.

[0134] Wherein, the transformation rate of the inlet temperature control error is determined based on the inlet temperature control error and the D-term delay period.

[0135] Exemplarily, the D-term delay period is used to represent the period interval between the inlet temperature control errors when calculating the transformation rate of the inlet temperature control error.

[0136] In some embodiments, the transformation rate of the inlet temperature control error may satisfy the following formula (8):

[0137] Transformation rate of inlet temperature control error = ΔT t0 -ΔT t0-i Formula (8)

[0138] where, ΔT t0 is used to represent the inlet temperature control error, and ΔT t0-i is used to represent the inlet temperature control error i cycles ago, and i is used to represent the D-term delay period.

[0139] In some embodiments, the D-term delay period is determined based on the output power of the fuel cell and the radiator outlet temperature.

[0140] Exemplarily, the D-term delay period is positively correlated with the radiator outlet temperature. For example, as the radiator outlet temperature increases, the D-term delay period increases, and the D-term delay period can increase in a gradient manner.

[0141] Exemplarily, the D-term delay period is positively correlated with the output power of the fuel cell. For example, as the output power of the fuel cell increases, the D-term delay period increases, and the D-term delay period can increase in a gradient manner.

[0142] Exemplarily, the D-term delay period may satisfy the following formula (9):

[0143] i = f(T rad_act , P) Formula (9)

[0144] where, i is used to represent the D-term delay period, T rad_act is used to represent the radiator outlet temperature, and P is used to represent the output power of the fuel cell.

[0145] It should be understood that the radiator outlet temperature and the output power of the fuel cell directly affect the heat dissipation effect and temperature stability of the fuel cell. Changing the D-term delay period from 1 to being determined based on the radiator outlet temperature and the output power of the fuel cell can more accurately reflect the change trend of the fuel cell inlet temperature, reduce the time lag of the fuel cell temperature control method, and improve the accuracy and response accuracy of the fuel cell temperature control.

[0146] It should be noted that proportional control is used to adjust the actual inlet temperature according to the inlet temperature control error; integral control is used to eliminate the steady-state error in the fuel cell temperature control process. The integral control coefficient integrates the inlet temperature control error, so that the cumulative influence of the inlet temperature control error affects the actual inlet temperature; derivative control is used to predict the change rate of the inlet temperature control error, and improves the dynamic response of the fuel cell temperature control through the change rate of the temperature control error, so as to improve the stability of the fuel cell temperature control system.

[0147] Exemplarily, the target opening of the three-way valve can satisfy the following formula (10):

[0148]

[0149] where θ req is used to represent the target opening of the three-way valve, k p is used to represent the proportional control coefficient, ΔT t0 is used to represent the inlet temperature control error, k i is used to represent the integral control coefficient, t is used to represent the current moment, k d is used to represent the derivative control coefficient, ΔT t0-i is used to represent the inlet temperature control error i cycles ago.

[0150] It should be understood that through multiple factors such as the flow resistance coefficient of the fuel cell, the inlet temperature control error, and the radiator outlet temperature, the PID control parameters can be determined more accurately. Combining the PID control parameters, the inlet temperature control error, and the change rate of the inlet temperature control error, the target opening of the three-way valve can be controlled more accurately, and the change trend of the fuel cell inlet temperature can be reflected more effectively, thereby reducing the time lag of the inlet temperature and improving the accuracy and stability of the fuel cell temperature control.

[0151] In some embodiments, after determining the target opening of the three-way valve, the fuel cell temperature control method further includes: controlling the opening of the three-way valve based on the target opening.

[0152] Exemplarily, after the processor determines the target opening of the three-way valve, the opening of the three-way valve is controlled to be adjusted to the target opening, such as Figure 6As shown, during the operation of the fuel cell, the fluid exits the stack, and the outlet temperature can be monitored in real time through the outlet temperature sensor. When the coolant passes through the three-way valve, the flow direction and distribution ratio of the fluid are determined by the opening degree of the three-way valve. Based on the target opening degree of the three-way valve, a part of the fluid directly enters the small cycle, and the other fluid enters the radiator for cooling. The radiator outlet temperature sensor can detect the temperature of the fluid at the radiator outlet in real time. Then the two parts of the fluid are merged to achieve the purpose of controlling the fuel cell temperature. The water pump provides power for the fluid to make the fluid enter the stack, and the actual inlet temperature is determined through the inlet temperature sensor.

[0153] It should be understood that by controlling the opening degree of the three-way valve through the target opening degree, the temperature of the fuel cell can be controlled more precisely, unnecessary heat energy loss can be reduced, thereby reducing the energy consumption of the fuel cell and improving the service life of the fuel cell.

[0154] Figure 7 is a flowchart of another fuel cell temperature control method shown according to an exemplary embodiment. As Figure 7 shown, the fuel cell temperature control method includes the following steps:

[0155] S701. Obtain the operating parameters of the fuel cell.

[0156] Among them, the operating parameters of the fuel cell include at least one of the following: the rated flow resistance coefficient of the fuel cell, the water pump speed, the opening degree of the three-way valve, the inlet water pressure of the fuel cell, the output power of the fuel cell, the radiator outlet temperature, and the actual inlet temperature of the fuel cell.

[0157] S702. Based on the operating parameters of the fuel cell, determine the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature.

[0158] S703. Determine the PID control parameters based on the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature.

[0159] S704. Determine the D-term delay period based on the output power of the fuel cell and the radiator outlet temperature.

[0160] S705. Determine the target opening degree of the three-way valve based on the PID control parameters, the inlet temperature control error, and the transformation rate of the inlet temperature control error.

[0161] Among them, the transformation rate of the inlet temperature control error is determined based on the inlet temperature control error and the D-term delay period.

[0162] S706. Control the opening degree of the three-way valve based on the target opening degree.

[0163] The above mainly introduces the solution provided by the embodiments of the present application from the perspective of methods. To implement the above functions, the fuel cell temperature control device or electronic device includes the corresponding hardware structures and / or software modules for performing each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of the examples described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the form of hardware or computer software driving the hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0164] According to the above method, the embodiments of the present application can exemplarily divide the functional modules of the fuel cell temperature control device or electronic device. For example, the fuel cell temperature control device or electronic device may include each functional module corresponding to each function division, or two or more functions may be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of a software functional module. It should be noted that the division of modules in the embodiments of the present application is illustrative, only a logical function division, and there may be other division methods in actual implementation.

[0165] Figure 8 The block diagram of a fuel cell temperature control device shown according to an exemplary embodiment. Refer to Figure 8 . The fuel cell temperature control device 800 includes: an acquisition module 801 and a processing module 802.

[0166] The acquisition module 801 is configured to acquire the operating parameters of the fuel cell.

[0167] The processing module 802 is configured to determine the flow resistance coefficient, the radiator outlet temperature, and the inlet temperature control error of the fuel cell based on the operating parameters of the fuel cell; and determine the target opening of the three-way valve based on the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature.

[0168] In a possible implementation manner, the operating parameters of the fuel cell include at least one of the following: the rated flow resistance coefficient of the fuel cell, the water pump speed, the opening of the three-way valve, the inlet water pressure of the fuel cell, the output power of the fuel cell, the radiator outlet temperature, and the actual inlet temperature of the fuel cell.

[0169] In a possible implementation, the processing module 802 is specifically configured to determine PID control parameters based on the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature; determine the target opening degree of the three-way valve based on the PID control parameters, the inlet temperature control error of the fuel cell, and the transformation rate of the inlet temperature control error; the transformation rate of the inlet temperature control error is determined based on the inlet temperature control error and the D-term delay period.

[0170] In a possible implementation, the D-term delay period is determined based on the output power of the fuel cell and the radiator outlet temperature; the D-term delay period is positively correlated with the radiator outlet temperature, and the D-term delay period is positively correlated with the output power of the fuel cell.

[0171] In a possible implementation, the PID control parameters are determined based on the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, the radiator outlet temperature, and a preset corresponding relationship; the preset corresponding relationship is used to reflect the PID control parameters corresponding to different values of the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature.

[0172] In a possible implementation, the operating parameters of the fuel cell include the rated flow resistance coefficient of the fuel cell, the water pump speed, the opening degree of the three-way valve, and the inlet water pressure of the fuel cell; the processing module 802 is specifically configured to determine the change value of the flow resistance coefficient of the fuel cell based on the water pump speed, the opening degree of the three-way valve, and the inlet water pressure of the fuel cell; determine the flow resistance coefficient of the fuel cell based on the sum of the rated flow resistance coefficient of the fuel cell and the change value of the flow resistance coefficient of the fuel cell.

[0173] In a possible implementation, the flow resistance coefficient of the fuel cell satisfies the following formula: R = R ini +f(N act ,θ act ,p act ); where R is used to represent the flow resistance coefficient of the fuel cell; R ini is used to represent the rated flow resistance coefficient of the fuel cell; N act is used to represent the water pump speed of the fuel cell; θ act is used to represent the opening degree of the three-way valve; P act is used to represent the inlet water pressure of the fuel cell.

[0174] In a possible implementation, the operating parameters of the fuel cell include the actual inlet temperature of the fuel cell and the output power of the fuel cell; the processing module 802 is specifically configured to determine the target inlet temperature of the fuel cell based on the output power of the fuel cell; where the target inlet temperature of the fuel cell is positively correlated with the output power of the fuel cell; determine the inlet temperature control error of the fuel cell based on the difference between the target inlet temperature and the actual inlet temperature of the fuel cell.

[0175] In a possible implementation, after determining the target opening degree of the three-way valve, the processing module 802 is further configured to control the opening degree of the three-way valve based on the target opening degree.

[0176] Figure 9 is a block diagram of an electronic device shown according to an exemplary embodiment. As Figure 9 shown, the electronic device 900 includes, but is not limited to: a processor 901 and a memory 902.

[0177] Among them, the above-mentioned memory 902 is used to store the executable instructions of the above-mentioned processor 901. It can be understood that the above-mentioned processor 901 is configured to execute instructions to implement the fuel cell temperature control method in the above-mentioned embodiments.

[0178] It should be noted that those skilled in the art can understand that Figure 9 the structure of the electronic device shown in Figure 9 does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than

[0179] shown, or combine certain components, or have different component arrangements.

[0180] The processor 901 is the control center of the electronic device, connecting various parts of the entire electronic device through various interfaces and lines. By running or executing software programs and / or modules stored in the memory 902, and calling data stored in the memory 902, it executes various functions of the electronic device and processes data, thereby monitoring the entire electronic device. The processor 901 may include one or more processing units. Optionally, the processor 901 may integrate an application processor and a modem processor. Among them, the application processor mainly processes the operating system, user interface, application programs, etc., and the modem processor mainly processes wireless communication. It can be understood that the above-mentioned modem processor may not be integrated into the processor 901 either.

[0181] In an exemplary embodiment, there is also provided a computer-readable storage medium including instructions, such as the memory 902 including instructions. The above-mentioned instructions can be executed by the processor 901 of the electronic device 900 to implement the fuel cell temperature control method in the above-mentioned embodiments.

[0182] In actual implementation, Figure 8 the functions of the acquisition module 801 and the processing module 802 in Figure 9 can both be implemented by the processor 901 in

[0183] calling a computer program stored in the memory 902. For the specific execution process, reference can be made to the description of the method part in the above embodiment, which will not be elaborated here.

[0184] Optionally, the computer-readable storage medium may be a non-transitory computer-readable storage medium. For example, the non-transitory computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device, etc.

[0185] It should be noted that when the instructions in the above computer-readable storage medium or the one or more instructions in the computer program product are executed by the processor of the electronic device, the various processes of the above method embodiments are implemented, and the same technical effects as the above method can be achieved. To avoid repetition, it will not be elaborated here.

[0186] Through the description of the above embodiments, those skilled in the art can clearly understand that for the convenience and conciseness of description, only the above division of each functional module is used as an example. In actual application, the above functions can be allocated to different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.

[0187] In several embodiments provided by the present application, it should be understood that the disclosed device and method can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point, the displayed or discussed mutual coupling or direct coupling or communication connection may be through some interfaces. The indirect coupling or communication connection of the device or unit may be in an electrical, mechanical or other form.

[0188] The unit described as a separation component may or may not be physically separated. The component displayed as a unit may be a physical unit or multiple physical units, that is, it may be located in one place or may be distributed to multiple different places. Some or all of the classification units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0189] In addition, each functional unit in various embodiments of the present application can be integrated in a processing unit, can also be physically present separately for each unit, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0190] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on such an understanding, the technical solution of the embodiments of the present application essentially or the part that contributes to the prior art or all or part of the classification of this technical solution can be embodied in the form of a software product. This software product is stored in a storage medium and includes several instructions to enable a device (which can be a single-chip microcomputer, a chip, etc.) or a processor to execute all or part of the steps of the methods of various embodiments of the present application. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, ROM, RAM, magnetic disks, or optical discs that can store program codes.

[0191] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A fuel cell temperature control method, characterized in that: The method comprises: Obtaining operating parameters of the fuel cell; Determining a flow resistance coefficient of the fuel cell, an inlet temperature control error of the fuel cell, and an outlet temperature of a radiator based on operating parameters of the fuel cell; The target opening of the three-way valve is determined based on the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, and the radiator outlet temperature.

2. The fuel cell temperature control method according to claim 1, characterized in that: The operating parameters of the fuel cell include at least one of the following: the rated flow resistance coefficient of the fuel cell, the water pump speed, the three-way valve opening, the inlet water pressure of the fuel cell, the output power of the fuel cell, the radiator outlet temperature and the actual inlet temperature of the fuel cell.

3. The fuel cell temperature control method according to claim 1, characterized in that: The step of determining the target opening of the three-way valve based on the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell and the radiator outlet temperature comprises: Determining a PID control parameter based on a flow resistance coefficient of the fuel cell, an inlet temperature control error of the fuel cell, and an outlet temperature of the radiator; The target opening of the three-way valve is determined based on the PID control parameters, the inlet temperature control error of the fuel cell and the inlet temperature control error change rate; the inlet temperature control error change rate is determined based on the inlet temperature control error and the D-term delay period.

4. The fuel cell temperature control method according to claim 3, characterized in that: The D-term delay period is determined based on the output power of the fuel cell and the radiator outlet temperature; the D-term delay period is positively correlated with the radiator outlet temperature, and the D-term delay period is positively correlated with the output power of the fuel cell.

5. The fuel cell temperature control method according to claim 3, characterized in that: The PID control parameters are determined based on the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell, the radiator outlet temperature and a preset corresponding relationship; the preset corresponding relationship is used to reflect the PID control parameters corresponding to different values ​​of the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell and the radiator outlet temperature.

6. The fuel cell temperature control method according to claim 1, characterized in that: The operating parameters of the fuel cell include the rated flow resistance coefficient of the fuel cell, the water pump speed, the three-way valve opening and the inlet water pressure of the fuel cell; the flow resistance coefficient of the fuel cell is determined based on the operating parameters of the fuel cell, including: Determining a change value of a flow resistance coefficient of the fuel cell based on a water pump speed of the fuel cell, an opening of a three-way valve, and an inlet water pressure of the fuel cell; The flow resistance coefficient of the fuel cell is determined based on the sum of the rated flow resistance coefficient of the fuel cell and the change value of the flow resistance coefficient of the fuel cell.

7. The fuel cell temperature control method according to claim 6, characterized in that: The flow resistance coefficient of the fuel cell satisfies the following formula: R=R ini +f(N act ,i act ,P act ) Wherein, R is used to represent the flow resistance coefficient of the fuel cell; R ini It is used to indicate the rated flow resistance coefficient of the fuel cell; N act Used to indicate the water pump speed of the fuel cell; θ act Used to indicate the opening degree of the three-way valve; P act Used to indicate the inlet water pressure of the fuel cell.

8. The fuel cell temperature control method according to claim 1, characterized in that: The operating parameters of the fuel cell include an actual inlet temperature of the fuel cell and an output power of the fuel cell; and determining an inlet temperature control error of the fuel cell based on the operating parameters of the fuel cell includes: Determining a target inlet temperature of the fuel cell based on the output power of the fuel cell; wherein the target inlet temperature of the fuel cell is positively correlated with the output power of the fuel cell; An inlet temperature control error of the fuel cell is determined based on a difference between a target inlet temperature and an actual inlet temperature of the fuel cell.

9. The fuel cell temperature control method according to claim 1, characterized in that: After determining the target opening of the three-way valve, the method further includes: The opening degree of the three-way valve is controlled based on the target opening degree.

10. A fuel cell temperature control device, characterized in that: The fuel cell temperature control device comprises: an acquisition module and a processing module; An acquisition module, used to acquire operating parameters of the fuel cell; A processing module is used to determine the flow resistance coefficient, radiator outlet temperature and inlet temperature control error of the fuel cell based on the operating parameters of the fuel cell; and determine the target opening of the three-way valve based on the flow resistance coefficient of the fuel cell, the inlet temperature control error of the fuel cell and the radiator outlet temperature.

11. An electronic device, characterized in that: It comprises a processor and a memory, wherein the processor is coupled to the memory; the memory is used to store computer instructions, and the computer instructions are loaded and executed by the processor to enable the computer device to implement the fuel cell temperature control method as described in any one of claims 1 to 9.

12. A vehicle, characterized in that: Comprising the electronic device as claimed in claim 11.

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