Control method for operation of a radiator, fuel cell system and readable storage medium

Abstract

The application provides a control method for radiator operation, a fuel cell system and a readable storage medium. The method comprises the following steps: obtaining initial operation parameters of a radiator fan, wherein the initial operation parameters at least include an initial duty cycle of the radiator fan and an initial wind direction of the radiator fan; obtaining environmental parameters of the radiator fan, wherein the environmental parameters represent environmental conditions in a space where the radiator is located, and the environmental parameters at least include an environmental wind direction and an environmental precipitation amount; correcting the initial duty cycle of the radiator fan by using the environmental precipitation amount to determine a corrected duty cycle, and / or correcting the initial wind direction of the radiator fan by using the environmental wind direction to determine a corrected wind direction; and controlling the operation of the radiator fan by using the corrected duty cycle and / or the corrected wind direction. The method can greatly enhance the temperature control precision of the radiator, stabilize the water inlet temperature of the fuel cell, better release the performance of the fuel cell, and reduce the energy consumption by controlling the environmental precipitation amount and the wind direction.

Description

Technical Field

[0001] This application relates to the field of fuel cell heat dissipation, and more specifically, to a control method for radiator operation, a fuel cell system, and a computer-readable storage medium. Background Technology

[0002] Fuel cell systems generate electricity through electrochemical reactions within the stack. To ensure maximum efficiency of the chemical reaction, the internal temperature of the stack needs to be maintained within a certain range. However, existing stacks are greatly affected by the environment, resulting in poor heat sink temperature control performance, excessively high or low fuel cell inlet water temperature, and deteriorated fuel cell performance. Summary of the Invention

[0003] The main objective of this application is to provide a control method for radiator operation, a fuel cell system, and a computer-readable storage medium, so as to at least solve the problems of existing fuel cell stack radiators being susceptible to environmental factors, resulting in poor temperature control performance and high energy consumption.

[0004] To achieve the above objectives, according to one aspect of this application, a control method for radiator operation is provided. The radiator is electrically connected to a fuel cell stack, and the radiator includes a radiator fan. The method includes: acquiring initial operating parameters of the radiator fan, the initial operating parameters including at least an initial duty cycle and an initial wind direction of the radiator fan; acquiring environmental parameters of the radiator fan, the environmental parameters characterizing the environmental conditions within the space where the radiator is located, the environmental parameters including at least an environmental wind direction and environmental precipitation; correcting the initial duty cycle of the radiator fan using the environmental precipitation to determine a corrected duty cycle, and / or correcting the initial wind direction of the radiator fan using the environmental wind direction to determine a corrected wind direction; and controlling the operation of the radiator fan using the corrected duty cycle and / or the corrected wind direction.

[0005] Optionally, the initial duty cycle of the radiator fan is corrected using the ambient precipitation to determine the corrected duty cycle, including: obtaining a first correction coefficient, which is the ratio of a first heat dissipation to a second heat dissipation, where the first heat dissipation is the heat dissipated by ambient rainwater at the current moment, and the second heat dissipation is the heat dissipated by the radiator coolant at the current moment, and the first heat dissipation is related to the ambient precipitation at the current moment, wherein the ambient rainwater is the rainwater in the space where the radiator is located; obtaining a second correction coefficient, which is the ratio of a third heat dissipation to a fourth heat dissipation, wherein the third heat dissipation is the heat dissipated by the ambient precipitation at the target moment. The heat dissipated by rainwater, the fourth heat dissipation is the heat dissipated by the radiator coolant at the target time, the third heat dissipation is related to the environmental precipitation at the target time, and the current time is the time after a preset time elapsed from the target time; a correction difference and / or a correction ratio are determined based on the first correction coefficient and the second correction coefficient, the correction difference being the difference between the first correction coefficient and the second correction coefficient, and the correction ratio being the ratio between the first correction coefficient and the second correction coefficient; the duty cycle of the radiator fan is corrected based on the correction difference and / or the correction ratio to determine the corrected duty cycle.

[0006] Optionally, before obtaining the first correction coefficient, the method further includes: obtaining the volume of the radiator coolant per unit time, the inlet temperature of the radiator, the outlet temperature of the radiator, the specific heat capacity of the radiator coolant, and the density of the radiator coolant; and constructing a first heat dissipation formula Q1 = c1(ρ1V1)(T) based on the volume of the radiator coolant per unit time, the inlet temperature of the radiator, the outlet temperature of the radiator, the specific heat capacity of the radiator coolant, and the density of the radiator coolant. in -T out ), where V1 is the volume of the radiator coolant per unit time, T in The inlet temperature of the radiator, T out Let c1 be the outlet temperature of the radiator, ρ1 be the specific heat capacity of the radiator coolant, ρ1 be the density of the radiator coolant, and Q1 be the heat dissipated by the radiator coolant; determine the heat dissipated by the radiator coolant according to the first heat dissipation formula.

[0007] Optionally, before obtaining the first correction coefficient, the method further includes: obtaining the vaporization volume of the environmental rainwater per unit time, the vaporization temperature of the environmental rainwater, the ambient temperature, the specific heat capacity of the environmental rainwater, and the density of the environmental rainwater; and constructing a second heat dissipation formula Q2=c2(ρ2V2)(T) based on the vaporization volume of the environmental rainwater per unit time, the vaporization temperature of the environmental rainwater, the ambient temperature, the specific heat capacity of the environmental rainwater, and the density of the environmental rainwater. air -T0), where V2 is the vaporization volume of the environmental rainwater per unit time, T air Let T0 be the vaporization temperature of the ambient rainwater, C2 be the ambient temperature, ρ2 be the specific heat capacity of the ambient rainwater, ρ2 be the density of the ambient rainwater, and Q2 be the heat dissipated by the ambient rainwater; determine the heat dissipated by the ambient rainwater according to the second heat dissipation formula.

[0008] Optionally, obtaining the vaporization volume of the ambient rainwater per unit time includes: obtaining the heat dissipation area of ​​the radiator fan, the number of radiator fans in operation, the volume of the ambient rainwater per unit time, and the vaporization ratio of the ambient rainwater; and constructing the vaporization volume formula V2=X×S×n×k based on the heat dissipation area of ​​the radiator fan, the number of radiator fans in operation, the volume of the ambient rainwater per unit time, and the vaporization ratio of the ambient rainwater. α Where S is the heat dissipation area of ​​the radiator fan, n is the number of radiator fans in operation, X is the volume of ambient rainwater per unit time, and k α V1 is the vaporization ratio of the environmental rainwater, and V2 is the vaporization volume of the environmental rainwater per unit time; the vaporization volume of the environmental rainwater per unit time is determined according to the vaporization volume formula.

[0009] Optionally, the initial wind direction of the radiator fan is corrected using the ambient wind direction to determine the corrected wind direction, including: adjusting the wind direction of the radiator fan according to the ambient wind direction until the wind direction of the radiator fan is the same as the ambient wind direction or the wind direction of the radiator fan reaches a wind direction threshold, and determining the adjusted wind direction of the radiator fan as the corrected wind direction.

[0010] Optionally, the method further includes: acquiring operating parameters of the fuel cell stack, wherein the operating parameters of the fuel cell stack include at least one of the following: stack voltage, stack current, and stack output power; and determining the total heat dissipation of the fuel cell stack based on the operating parameters of the fuel cell stack, wherein the total heat dissipation of the fuel cell stack is the sum of the heat dissipation of the radiator fan, the heat dissipation of ambient rainwater, and the heat dissipation of ambient wind speed.

[0011] According to another aspect of this application, a fuel cell system is provided, comprising: a fuel cell stack having an outlet and an inlet; a radiator having an outlet and an inlet, wherein the outlet of the radiator is connected to the inlet of the fuel cell stack via a pipeline, and the inlet of the radiator is connected to the outlet of the fuel cell stack via another pipeline, the radiator including a radiator fan, and the radiator being controlled by any of the radiator operation control methods described above.

[0012] Optionally, the radiator further includes: a temperature sensor for detecting at least one of the following: the outlet temperature of the radiator, the inlet temperature of the radiator, the ambient temperature; a three-hole speedometer for detecting ambient wind speed and / or ambient wind direction; and a rain sensor for detecting ambient precipitation.

[0013] According to another aspect of this application, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device where the computer-readable storage medium is located to perform any of the control methods for operating the heat sink described above.

[0014] Applying the technical solution of this application, the above-mentioned radiator operation control method, wherein the radiator is electrically connected to the fuel cell stack, and the radiator includes a radiator fan, the method first obtains the initial operating parameters of the radiator fan, including at least the initial duty cycle and the initial wind direction of the radiator fan; then, it obtains the environmental parameters of the radiator fan, which characterize the environmental conditions within the space where the radiator is located, including at least the environmental wind direction and the environmental precipitation; then, it corrects the initial duty cycle of the radiator fan using the environmental precipitation to determine the corrected duty cycle, and / or corrects the initial wind direction of the radiator fan using the environmental wind direction to determine the corrected wind direction; finally, it controls the operation of the radiator fan using the corrected duty cycle and / or the corrected wind direction. This method, by controlling the environmental precipitation and wind direction, greatly enhances the temperature control accuracy of the radiator, makes the fuel cell inlet temperature more stable, improves fuel cell performance, and reduces energy consumption. It solves the problem that existing fuel cell stack radiators are easily affected by environmental factors, resulting in poor temperature control performance and high energy consumption. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 A hardware structure block diagram of a mobile terminal for performing a control method for radiator operation according to an embodiment of this application is shown.

[0017] Figure 2 A flowchart illustrating a control method for radiator operation according to an embodiment of this application is shown.

[0018] Figure 3 A schematic diagram of a fuel cell system according to an embodiment of this application is shown;

[0019] Figure 4 A schematic diagram of a heat sink provided according to an embodiment of this application is shown;

[0020] Figure 5 A flowchart illustrating another control method for radiator operation provided according to an embodiment of this application is shown.

[0021] Figure 6 A structural block diagram of a control device for radiator operation according to an embodiment of this application is shown.

[0022] The above figures include the following reference numerals:

[0023] 100. Fuel cell stack; 200. Radiator; 1. Outlet of fuel cell stack; 2. Inlet of fuel cell stack; 3. Inlet of radiator; 4. Outlet of radiator; 5. Temperature sensor; 6. Three-hole speedometer; 7. Rain sensor; 8. Radiator fan; 9. Control device for radiator operation; 11. Drive motor; 12. Ball bearing; 13. Frame; 102. Processor; 104. Memory; 106. Transmission equipment; 108. Input / output device. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] To enable those skilled in the art to better understand 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. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of 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 data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] For ease of description, the following explains some of the nouns or terms used in the embodiments of this application:

[0028] Electrochemical reaction: a redox reaction in which chemical energy is converted into electrical energy through electron transfer between the anode (H2) and the cathode (O2).

[0029] Single-phase heat dissipation: Heat is removed by the flow of a single phase (including air, liquid, etc.).

[0030] As described in the background section, existing fuel cell stacks are greatly affected by the environment, resulting in poor radiator temperature control performance, excessively high or low fuel cell inlet water temperature, and deteriorated fuel cell performance. To address the problem that existing fuel cell stack radiators are easily affected by environmental factors, leading to poor temperature control performance and high energy consumption, embodiments of this application provide a radiator operation control method, a fuel cell system, and a computer-readable storage medium.

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0032] The methods and embodiments provided in this application can be executed on a mobile terminal, computer terminal, or similar computing device. Taking running on a mobile terminal as an example, Figure 1 This is a hardware structure block diagram of a mobile terminal for a heat sink operation control method according to an embodiment of the present invention. Figure 1 As shown, a mobile terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the mobile terminal described above. For example, the mobile terminal may also include components that are more... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0033] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the heat sink operation control method in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device 106 is used to receive or send data via a network. Specific examples of the aforementioned networks may include wireless networks provided by the mobile terminal's communication provider. In one example, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0034] This embodiment provides a control method for the operation of a heat sink running on a mobile terminal, computer terminal, or similar computing device. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0035] Figure 2 This is a flowchart of a control method for radiator operation according to an embodiment of this application. Figure 2 As shown, the radiator is electrically connected to the fuel cell stack, and the radiator includes a radiator fan. The method includes the following steps:

[0036] Step S201: Obtain the initial operating parameters of the radiator fan. The initial operating parameters include at least the initial duty cycle and the initial airflow direction of the radiator fan.

[0037] Specifically, the duty cycle of the radiator fan is related to the fan speed, and the two have the same meaning. Therefore, only one of them needs to be obtained and adjusted.

[0038] Fuel cell systems generate electricity through electrochemical reactions within the fuel cell stack. To ensure maximum efficiency of the chemical reaction, the internal temperature of the stack needs to be maintained within a certain range. Related technologies utilize liquid cooling (deionized coolant) for this purpose. The heat carried away by the coolant is dissipated through a matching radiator. The radiator calculates the amount of heat dissipation required to reach a specified temperature by reading the inlet water temperature, and then adjusts the fan speed accordingly to achieve cooling (power output).

[0039] like Figure 3 As shown, the temperature of the water outlet 1 of the fuel cell stack is the same as the temperature of the water inlet 3 of the radiator, and the temperature of the water inlet 2 of the fuel cell stack is the same as the temperature of the water outlet 4 of the radiator.

[0040] Before obtaining the initial operating parameters of the aforementioned radiator fan, the method further includes the following steps:

[0041] Step S301: Obtain the operating parameters of the fuel cell stack. The operating parameters of the fuel cell stack include at least one of the following: stack voltage, stack current, and stack output power.

[0042] Step S302: Based on the operating parameters of the fuel cell stack, determine the total heat dissipation of the fuel cell stack. The total heat dissipation of the fuel cell stack is the sum of the heat dissipation of the radiator fan, the heat dissipation of the ambient rainwater, and the heat dissipation of the ambient wind speed.

[0043] Specifically, based on the operating parameters of the fuel cell stack, the total heat dissipation required by the fuel cell stack can be calculated, allowing for precise control of this total heat dissipation. During fuel cell stack operation, in addition to the cooling effect of its own fan and cooling water, the ambient wind speed also affects the temperature of the fuel cell stack, meaning that ambient wind speed contributes to cooling. Furthermore, during rainfall, rainwater also carries away some of the heat from the fuel cell stack, meaning that rainwater also contributes to cooling. Therefore, the total heat dissipation required by the fuel cell stack is first calculated based on its operating parameters such as stack voltage, stack current, and stack output power. Then, the amount of heat dissipated by ambient wind speed is determined, followed by the amount of heat dissipated by rainwater. Finally, the heat dissipation capacity required by the radiator fan can be obtained, and the operating parameters of the radiator fan can be derived from the heat dissipation capacity it needs to dissipate.

[0044] Among them, the greater the voltage decay rate, the greater the heat dissipation required by the fuel cell stack.

[0045] In addition, when the ambient wind speed increases significantly and the air flows faster, the amount of heat dissipated by the air increases significantly, so the fan speed can be appropriately reduced to maintain the overall heat dissipation. When it rains and the rainfall increases, the amount of heat dissipated by the rainwater increases significantly, so the fan speed can be appropriately reduced to maintain the overall heat dissipation.

[0046] Step S202: Obtain the environmental parameters of the radiator fan. The environmental parameters characterize the environmental conditions in the space where the radiator is located. The environmental parameters include at least the environmental wind direction and the environmental precipitation.

[0047] Specifically, environmental parameters include not only wind direction and precipitation, but also wind speed. When the wind speed increases significantly, the air flows faster, and the amount of heat dissipated by the air increases significantly. Therefore, the fan speed can be appropriately reduced to keep the overall heat dissipation constant.

[0048] Furthermore, because the radiator uses single-phase air cooling (i.e., heat is removed through the flow of a single phase, including air, liquid, etc.), and the program debugging is performed under a single environmental condition, the radiator parameters debugged in this way are only for that single environmental condition and cannot take into account the influence of other environmental factors. However, in practical applications of fuel cell stacks and radiators, the temperature of the fuel cell stack is affected by various factors, including weather, ambient temperature, driving conditions, vehicle speed, rainfall, and wind speed. Therefore, environmental factors such as wind direction, wind speed, and rainfall need to be considered. Significant changes in these factors can lead to poor radiator temperature control performance, excessively high or low fuel cell inlet water temperature, and deteriorated fuel cell performance. Calculating the impact of these environmental factors on radiator heat dissipation allows for corresponding control of radiator operating parameters, thereby improving radiator temperature control performance, maintaining stable fuel cell inlet water temperature, and improving fuel cell performance.

[0049] like Figure 3 As shown, the rain sensor 7 installed on the radiator 200 is used to detect the amount of rainwater in the environment, and the three-hole speed meter 6 installed on the radiator 200 is used to detect the ambient wind speed and ambient wind direction.

[0050] The rain sensor obtains the real-time rainfall data. Because rainwater, which is significantly cooler than the radiator's hot air, passes over the radiator surface, some of it absorbs heat and evaporates, carrying away heat. At the same fan speed, the total heat dissipation of the radiator is greater due to the heat carried away by the rainwater's phase change. Wind speed is determined by two factors: vehicle speed and local wind conditions. Higher vehicle speeds correspond to stronger headwinds, resulting in higher wind speeds measured by the three-hole speedometer. The three-hole speedometer also measures wind direction, adjusting the radiator angle to maximize airflow. Higher wind speeds indicate faster airflow around the radiator, allowing the hot air generated by the radiator to be carried away more quickly, resulting in greater heat dissipation at the same fan speed. Adding a rain sensor and a three-hole speedometer to the radiator allows for the detection of environmental parameters such as wind direction, wind speed, and rainfall, taking into account their impact on heat dissipation.

[0051] An ambient temperature sensor, a rain sensor, and a three-hole speedometer are installed on top of the radiator body. All sensor signal harnesses should be connected to the radiator's operating control device or the vehicle controller (depending on whether the radiator has an independent controller). The radiator controller calculates coefficients based on the various signals received to adjust the fan speed.

[0052] Step S203: The initial duty cycle of the radiator fan is corrected using the above-mentioned ambient precipitation to determine the corrected duty cycle, and / or the initial wind direction of the radiator fan is corrected using the above-mentioned ambient wind direction to determine the corrected wind direction.

[0053] Specifically, in practical applications, a three-hole speed meter installed on the radiator can also detect the ambient wind speed. At this time, the duty cycle of the radiator fan can be adjusted according to the two parameters of ambient wind speed and ambient precipitation to control the heat dissipation of the radiator.

[0054] Before obtaining the first correction coefficient, the above method also includes the following steps:

[0055] Step S401: Obtain the volume of the radiator coolant per unit time, the inlet temperature of the radiator, the outlet temperature of the radiator, the specific heat capacity of the radiator coolant, and the density of the radiator coolant.

[0056] Step S402: Based on the volume of the radiator coolant per unit time, the inlet temperature of the radiator, the outlet temperature of the radiator, the specific heat capacity of the radiator coolant, and the density of the radiator coolant, construct the first heat dissipation formula Q1 = c1(ρ1V1)(T in -T out ), where V1 is the volume of the radiator coolant per unit time, T inThe inlet temperature of the aforementioned radiator, T out Here, c1 is the outlet temperature of the radiator, ρ1 is the specific heat capacity of the radiator coolant, Q1 is the density of the radiator coolant, and Q1 is the heat dissipated by the radiator coolant.

[0057] Step S403: Determine the heat dissipated by the radiator coolant according to the first heat dissipation formula.

[0058] Specifically, based on the volume of the radiator coolant per unit time, the inlet temperature of the radiator, the outlet temperature of the radiator, the specific heat capacity of the radiator coolant, the density of the radiator coolant, and the first heat dissipation formula, the heat dissipated by the radiator coolant under different operating conditions can be calculated. On this basis, the sum of the heat that the ambient rainwater needs to dissipate and the heat that the radiator fan needs to dissipate can be calculated based on the total heat required by the fuel cell stack and the heat dissipated by the radiator coolant.

[0059] Before obtaining the first correction coefficient, the above method also includes the following steps:

[0060] Step S501: Obtain the vaporization volume of the above-mentioned environmental rainwater, the vaporization temperature of the above-mentioned environmental rainwater, the ambient temperature, the specific heat capacity of the above-mentioned environmental rainwater, and the density of the above-mentioned environmental rainwater per unit time.

[0061] Step S502: Based on the vaporization volume of the aforementioned environmental rainwater per unit time, the vaporization temperature of the aforementioned environmental rainwater, the ambient temperature, the specific heat capacity of the aforementioned environmental rainwater, and the density of the aforementioned environmental rainwater, construct the second heat dissipation formula Q2=c2(ρ2V2)(T air -T0), where V2 is the vaporization volume of the aforementioned environmental rainwater per unit time, T air Here, T0 is the vaporization temperature of the aforementioned environmental rainwater, C2 is the specific heat capacity of the aforementioned environmental rainwater, ρ2 is the density of the aforementioned environmental rainwater, and Q2 is the heat dissipated by the aforementioned environmental rainwater.

[0062] Step S503: Determine the heat dissipated by the ambient rainwater according to the second heat dissipation formula described above.

[0063] Specifically, based on the vaporization volume of the aforementioned environmental rainwater per unit time, the vaporization temperature of the aforementioned environmental rainwater, the ambient temperature, the specific heat capacity of the aforementioned environmental rainwater, the density of the aforementioned environmental rainwater, and the second heat dissipation formula, the heat dissipated by the environmental rainwater under different rainfall amounts can be calculated. Based on this, the sum of the heat dissipated by the radiator coolant and the heat that the radiator fan needs to dissipate can be calculated based on the total heat required by the fuel cell stack and the heat dissipated by the environmental rainwater. Combining this with the heat dissipated by the radiator coolant obtained in steps S401-S403, the heat that the radiator fan needs to dissipate can be obtained, thus determining the operating parameters of the radiator fan. When it rains, the amount of rainwater carried away by the radiator can be calculated based on the rainfall amount. Subtracting this heat from the fuel cell's required heat dissipation gives the heat that the radiator fan needs to dissipate. Simultaneously, the radiator drive motor adjusts its angle according to the wind direction to increase the heat dissipation from rainwater vaporization.

[0064] The specific implementation steps for obtaining the vaporization volume of the aforementioned environmental rainwater per unit time are as follows:

[0065] Step S5011: Obtain the heat dissipation area of ​​the radiator fan, the number of the radiator fans in operation, the volume of the ambient rainwater per unit time, and the vaporization ratio of the ambient rainwater.

[0066] Step S5012: Based on the heat dissipation area of ​​the radiator fan, the number of radiator fans in operation, the volume of the ambient rainwater per unit time, and the vaporization ratio of the ambient rainwater, construct the vaporization volume formula V2 = X × S × n × k α Where S is the heat dissipation area of ​​the radiator fan, n is the number of the radiator fans in operation, X is the volume of rainwater in the environment per unit time, and k α V1 represents the vaporization ratio of the above-mentioned environmental rainwater, and V2 represents the vaporization volume of the above-mentioned environmental rainwater per unit time.

[0067] Step S5013: Determine the vaporization volume of the above-mentioned environmental rainwater per unit time according to the above vaporization volume formula.

[0068] Specifically, by considering the heat dissipation area of ​​the radiator fan, the number of radiator fans in operation, the volume of rainwater in the environment per unit time, the vaporization ratio of the rainwater, and the vaporization volume formula, the vaporization volume of the rainwater in the environment per unit time can be calculated, thereby obtaining the heat dissipation of the rainwater and controlling the radiator fan. In rainy weather, when rain falls on the surface of the radiator fan, some of the rainwater vaporizes due to the high-heat air carried out by the radiator. The heat carried away by the rainwater is divided into two parts: 1. Heat carried away by conduction; 2. Heat carried away by vaporization. The amount of rainwater per unit time is considered. Since the heat carried away by conduction is very small and can be ignored, only the heat carried away by vaporization needs to be considered. The heat dissipation area of ​​the radiator fan is the area projected onto the radiator core, which is related to the cross-sectional area of ​​the fan. The radiator core includes air ducts and water channels.

[0069] The specific steps for correcting the initial duty cycle of the radiator fan using the aforementioned environmental precipitation are as follows:

[0070] Step S601: Obtain the first correction coefficient, which is the ratio of the first heat dissipation to the second heat dissipation. The first heat dissipation is the heat dissipated by the ambient rainwater at the current moment, and the second heat dissipation is the heat dissipated by the radiator coolant at the current moment. The first heat dissipation is related to the ambient precipitation at the current moment, and the ambient rainwater is the rainwater in the space where the radiator is located.

[0071] Step S602: Obtain the second correction coefficient. The second correction coefficient is the ratio of the third heat dissipation to the fourth heat dissipation. The third heat dissipation is the heat dissipated by the rainwater in the environment at the target time. The fourth heat dissipation is the heat dissipated by the radiator coolant at the target time. The third heat dissipation is related to the precipitation in the environment at the target time. The current time is the time after the target time has elapsed for a preset period.

[0072] Step S603: Determine the correction difference and / or correction ratio based on the first correction coefficient and the second correction coefficient, wherein the correction difference is the difference between the first correction coefficient and the second correction coefficient, and the correction ratio is the ratio between the first correction coefficient and the second correction coefficient.

[0073] Step S604: Based on the above correction difference and / or the above correction ratio, the duty cycle of the above radiator fan is corrected to determine the above corrected duty cycle.

[0074] Specifically, this allows for more precise adjustment of the radiator fan's duty cycle. Specifically, the radiator fan's duty cycle can be adjusted based on the ratio of the correction difference to the first correction coefficient, ensuring that the ratio of the duty cycle difference to the adjusted radiator fan's duty cycle is the same as the ratio of the correction difference to the first correction coefficient. The duty cycle difference is the difference between the adjusted radiator fan's duty cycle and the original radiator fan's duty cycle. Alternatively, the radiator fan's duty cycle can be adjusted based on the correction ratio, ensuring that the ratio of the adjusted radiator fan's duty cycle to the original radiator fan's duty cycle is the same as the correction ratio.

[0075] The specific steps for correcting the initial airflow direction of the radiator fan using the aforementioned ambient wind direction are as follows:

[0076] Step S701: Adjust the airflow direction of the radiator fan according to the ambient wind direction until the airflow direction of the radiator fan is the same as the ambient wind direction or the airflow direction of the radiator fan reaches the wind direction threshold, and determine the adjusted airflow direction of the radiator fan as the corrected airflow direction.

[0077] Specifically, this allows the radiator fan's airflow direction to be adjusted as close as possible to the ambient wind direction, minimizing the impact of the ambient wind on the radiator fan's heat dissipation. The radiator fan's airflow direction threshold is ±30° of the initial wind direction. When the ambient wind direction is the same as the radiator fan's airflow direction, the airflow through the radiator core is maximized; the greater the airflow, the better the heat dissipation. Here, airflow equals wind speed multiplied by time.

[0078] In addition, the ambient wind direction is the wind direction that occurs most frequently within the preset time period. For example, if there are southwest winds 8 times and northwest winds 6 times in the 15 minutes before the current moment, the radiator fan direction will be adjusted to the northwest wind direction.

[0079] Among them, such as Figure 3 and Figure 4 As shown, the drive motor 11 on the radiator 200 drives the ball bearing 12 to move, and the airflow direction of the radiator fan is adjusted by adjusting the rotation angle of the ball bearing 12. The control device 9 for the operation of the radiator can be an ATS (Automatic Temperature Cooling System) controller.

[0080] Step S204: Control the operation of the radiator fan by using the above-mentioned corrected duty cycle and / or the above-mentioned corrected airflow direction.

[0081] Specifically, the operating parameters of the radiator fan are usually adjusted once every preset time, which is generally set to 15 minutes.

[0082] The control method for the operation of the radiator described in this application involves an electrically connected radiator to a fuel cell stack. The radiator includes a radiator fan. The method first acquires the initial operating parameters of the radiator fan, including at least the initial duty cycle and initial wind direction. Then, it acquires the environmental parameters of the radiator fan, which characterize the environmental conditions within the space where the radiator is located, including at least the environmental wind direction and precipitation. Next, it corrects the initial duty cycle of the radiator fan using the precipitation to determine a corrected duty cycle, and / or corrects the initial wind direction of the radiator fan using the wind direction to determine a corrected wind direction. Finally, it controls the operation of the radiator fan using the corrected duty cycle and / or the corrected wind direction. This method, by controlling the precipitation and wind direction, significantly enhances the temperature control accuracy of the radiator, resulting in a more stable fuel cell inlet temperature, better fuel cell performance, and reduced energy consumption. It solves the problem that existing fuel cell stack radiators are susceptible to environmental factors, leading to poor temperature control performance and high energy consumption.

[0083] This embodiment relates to a specific control method for radiator operation, such as... Figure 5 As shown, it includes the following steps:

[0084] Step S1: First, turn on the fuel cell stack and radiator;

[0085] Step S2: Detect whether it is raining in the outside environment. If it is raining in the outside environment, obtain the heat dissipation coefficient based on the heat dissipation of the cooling water and the heat dissipation of the ambient rainwater. Then adjust the duty cycle of the radiator fan according to the heat dissipation coefficient.

[0086] Step S3: After adjusting the duty cycle of the radiator fan and ensuring that there is no rain in the outside environment, drive the radiator corner motor to move according to the ambient wind direction, so that the airflow direction of the radiator fan tends to the ambient wind direction.

[0087] Step S4: Real-time detection of whether the adjustment angle of the radiator fan is consistent with the controller's command.

[0088] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0089] This application also provides a fuel cell system, such as... Figure 3As shown, it includes: a fuel cell stack 100 having an outlet and an inlet; a radiator 200 having an outlet and an inlet, wherein the outlet 4 of the radiator is connected to the inlet 2 of the fuel cell stack via a pipeline, and the inlet 3 of the radiator is connected to the outlet 1 of the fuel cell stack via another pipeline, wherein the radiator includes a radiator fan 8, and the radiator is controlled by any of the above-described radiator operation control methods.

[0090] The fuel cell system described in this application includes: a fuel cell stack with an outlet and an inlet; and a radiator with an outlet and an inlet. The outlet of the radiator is connected to the inlet of the fuel cell stack via a pipeline, and the inlet of the radiator is connected to the outlet of the fuel cell stack via another pipeline. The radiator includes a radiator fan, and the radiator is controlled by any of the aforementioned radiator operation control methods. This system, by controlling environmental precipitation and wind direction, significantly enhances the radiator's temperature control accuracy, stabilizes the fuel cell inlet temperature, improves fuel cell performance, and reduces energy consumption. It solves the problem that existing fuel cell stack radiators are susceptible to environmental factors, resulting in poor temperature control performance and high energy consumption.

[0091] In another embodiment, such as Figure 3 As shown, the radiator also includes: a temperature sensor 5 for detecting at least one of the following: the outlet temperature of the radiator, the inlet temperature of the radiator, and the ambient temperature; a three-hole speed meter 6 for detecting the ambient wind speed and / or the ambient wind direction; and a rain sensor 7 for detecting the ambient precipitation.

[0092] The rain sensor obtains the real-time rainfall data. Because rainwater, which is significantly cooler than the radiator's hot air, passes over the radiator surface, some of it absorbs heat and evaporates, carrying away heat. At the same fan speed, the total heat dissipation of the radiator is greater due to the heat carried away by the rainwater's phase change. Wind speed is determined by two factors: vehicle speed and local wind conditions. Higher vehicle speeds correspond to stronger headwinds, resulting in higher wind speeds measured by the three-hole speedometer. The speedometer also measures wind direction and adjusts the radiator angle to maximize airflow. Higher wind speeds indicate faster airflow around the radiator, allowing the hot air generated by the radiator to be carried away more quickly, resulting in greater heat dissipation at the same fan speed.

[0093] An ambient temperature sensor, a rain sensor, and a three-hole speedometer are installed on top of the radiator body. All sensor signal harnesses should be connected to the radiator controller or the vehicle controller (depending on whether the radiator has an independent controller). The radiator controller calculates coefficients based on the obtained signals to adjust the fan speed.

[0094] In another embodiment, such as Figure 3 As shown, the radiator also includes a radiator operation control device 9. The radiator operation control device is used in any of the above-described radiator operation control methods and controls the radiator fan.

[0095] In another embodiment, such as Figure 4 As shown, the radiator also includes a drive motor 11, a ball bearing 12, and a frame 13. The control device for radiator operation sends control commands to the drive motor, which then drives the ball bearing to rotate according to the control commands. The radiator fan is mounted on the frame via the ball bearing.

[0096] This application also provides a control device for radiator operation. It should be noted that the radiator operation control device of this application can be used to execute the control method for radiator operation provided in this application. This device is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that implements a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0097] The following describes the control device for radiator operation provided in the embodiments of this application.

[0098] Figure 6 This is a schematic diagram of a control device for the operation of a heat sink according to an embodiment of this application. Figure 6 As shown, the radiator is electrically connected to the fuel cell stack. The radiator includes a radiator fan. The device includes a first acquisition unit 10, a second acquisition unit 20, a first determination unit 30, and a control unit 40. The first acquisition unit 10 is used to acquire the initial operating parameters of the radiator fan, which include at least the initial duty cycle and the initial wind direction of the radiator fan. The second acquisition unit 20 is used to acquire the environmental parameters of the radiator fan, which characterize the environmental conditions within the space where the radiator is located, including at least the environmental wind direction and the environmental precipitation. The first determination unit 30 is used to correct the initial duty cycle of the radiator fan using the environmental precipitation to determine a corrected duty cycle, and / or to correct the initial wind direction of the radiator fan using the environmental wind direction to determine a corrected wind direction. The control unit 40 is used to control the operation of the radiator fan using the corrected duty cycle and / or the corrected wind direction.

[0099] The control device for the operation of the aforementioned radiator in this application is electrically connected to a fuel cell stack. The radiator includes a radiator fan and comprises a first acquisition unit, a second acquisition unit, a first determination unit, and a control unit. The first acquisition unit acquires the initial operating parameters of the radiator fan, which include at least the initial duty cycle and the initial wind direction of the radiator fan. The second acquisition unit acquires the environmental parameters of the radiator fan, which characterize the environmental conditions within the space where the radiator is located, and include at least the environmental wind direction and the environmental precipitation. The first determination unit corrects the initial duty cycle of the radiator fan using the environmental precipitation to determine a corrected duty cycle, and / or corrects the initial wind direction of the radiator fan using the environmental wind direction to determine a corrected wind direction. The control unit controls the operation of the radiator fan using the corrected duty cycle and / or the corrected wind direction. By controlling the environmental precipitation and wind direction, this device significantly enhances the temperature control accuracy of the radiator, stabilizes the fuel cell inlet temperature, improves fuel cell performance, and reduces energy consumption. This solves the problem that existing fuel cell stack heat sinks are susceptible to environmental factors, resulting in poor temperature control performance and high energy consumption.

[0100] In an optional example, the first determining unit includes a first acquiring module, a second acquiring module, a first determining module, and a second determining module. The first acquiring module is used to acquire a first correction coefficient, which is the ratio of a first heat dissipation to a second heat dissipation. The first heat dissipation is the heat dissipated by ambient rainwater at the current moment, and the second heat dissipation is the heat dissipated by the radiator coolant at the current moment. The first heat dissipation is related to the ambient precipitation at the current moment, and the ambient rainwater is the rainwater in the space where the radiator is located. The second acquiring module is used to acquire a second correction coefficient, which is the ratio of a third heat dissipation to a fourth heat dissipation. The third heat dissipation is the heat dissipated by the coolant at the target time. The heat dissipated by ambient rainwater, the fourth heat dissipation being the heat dissipated by the radiator coolant at the target time, the third heat dissipation being related to the ambient precipitation at the target time, and the current time being the time after a preset time elapsed from the target time; the first determining module is used to determine a correction difference and / or a correction ratio based on a first correction coefficient and a second correction coefficient, where the correction difference is the difference between the first and second correction coefficients, and the correction ratio is the ratio of the first and second correction coefficients; the second determining module is used to correct the duty cycle of the radiator fan based on the correction difference and / or the correction ratio, and determine the corrected duty cycle. This allows for more precise adjustment of the radiator fan's duty cycle.

[0101] In one optional embodiment, the apparatus further includes a third acquisition unit, a first construction unit, and a second determination unit. The third acquisition unit is used to acquire, before acquiring the first correction coefficient, the volume of the radiator coolant per unit time, the inlet temperature of the radiator, the outlet temperature of the radiator, the specific heat capacity of the radiator coolant, and the density of the radiator coolant. The first construction unit is used to construct a first heat dissipation formula Q1 = c1(ρ1V1)(T) based on the volume of the radiator coolant per unit time, the inlet temperature of the radiator, the outlet temperature of the radiator, the specific heat capacity of the radiator coolant, and the density of the radiator coolant. in -T out ), where V1 is the volume of the radiator coolant per unit time, T in The inlet temperature of the aforementioned radiator, T out Let c1 be the outlet temperature of the radiator, ρ1 be the specific heat capacity of the radiator coolant, ρ1 be the density of the radiator coolant, and Q1 be the heat dissipated by the radiator coolant. The second determining unit is used to determine the heat dissipated by the radiator coolant according to the first heat dissipation formula. This allows for more precise adjustment of the radiator fan duty cycle.

[0102] For example, the above-mentioned device further includes a fourth acquisition module, a second construction module, and a third determination unit. The fourth acquisition module is used to acquire, before acquiring the first correction coefficient, the vaporization volume of the environmental rainwater per unit time, the vaporization temperature of the environmental rainwater, the ambient temperature, the specific heat capacity of the environmental rainwater, and the density of the environmental rainwater. The second construction module is used to construct a second heat dissipation formula Q2=c2(ρ2V2)(T) based on the vaporization volume of the environmental rainwater per unit time, the vaporization temperature of the environmental rainwater, the ambient temperature, the specific heat capacity of the environmental rainwater, and the density of the environmental rainwater. air -T0), where V2 is the vaporization volume of the aforementioned environmental rainwater per unit time, T air Let T0 be the vaporization temperature of the aforementioned environmental rainwater, C2 be the specific heat capacity of the aforementioned environmental rainwater, ρ2 be the density of the aforementioned environmental rainwater, and Q2 be the heat dissipated by the aforementioned environmental rainwater. The third determining unit is used to determine the heat dissipated by the environmental rainwater according to the aforementioned second heat dissipation formula. The heat dissipated by the environmental rainwater under different rainfall amounts can be calculated. Based on this, the sum of the heat dissipated by the radiator coolant and the heat that the radiator fan needs to dissipate can be calculated based on the total heat required by the fuel cell stack and the heat dissipated by the environmental rainwater.

[0103] In this embodiment, the fourth acquisition module includes an acquisition submodule, a construction submodule, and a determination submodule. The acquisition submodule is used to acquire the heat dissipation area of ​​the radiator fan, the number of radiator fans in operation, the volume of the ambient rainwater per unit time, and the vaporization ratio of the ambient rainwater. The construction submodule is used to construct the vaporization volume formula V2=X×S×n×k based on the heat dissipation area of ​​the radiator fan, the number of radiator fans in operation, the volume of the ambient rainwater per unit time, and the vaporization ratio of the ambient rainwater. α Where S is the heat dissipation area of ​​the radiator fan, n is the number of the radiator fans in operation, X is the volume of rainwater in the environment per unit time, and k α V1 represents the vaporization ratio of the aforementioned environmental rainwater, and V2 represents the vaporization volume of the aforementioned environmental rainwater per unit time. The determination submodule is used to determine the vaporization volume of the aforementioned environmental rainwater per unit time based on the aforementioned vaporization volume formula. The vaporization volume of the aforementioned environmental rainwater per unit time can be calculated, thereby obtaining the heat dissipation of the environmental rainwater, which can then be used to control the radiator fan.

[0104] In one optional embodiment, the first determining unit includes an adjustment module. This module adjusts the airflow direction of the radiator fan according to the ambient wind direction until the radiator fan's airflow direction matches the ambient wind direction or reaches a wind direction threshold. The adjusted airflow direction of the radiator fan is then determined as the corrected wind direction. By adjusting the radiator fan's airflow direction as close as possible to the ambient wind direction, the impact of the ambient wind direction on the radiator fan's heat dissipation can be minimized.

[0105] As an optional solution, the above-mentioned device further includes a fourth acquisition unit and a fourth determination unit. The fourth acquisition unit is used to acquire the operating parameters of the fuel cell stack, which include at least one of the following: stack voltage, stack current, and stack output power. The fourth determination unit is used to determine the total heat dissipation of the fuel cell stack based on the operating parameters. The total heat dissipation of the fuel cell stack is the sum of the heat dissipation from the radiator fan, the heat dissipation from ambient rainwater, and the heat dissipation from ambient wind speed. This allows for precise control of the total heat dissipation required by the fuel cell stack.

[0106] The control device for the operation of the aforementioned heat sink includes a processor and a memory. The first acquisition unit and other components are stored as program units in the memory, and the processor executes these program units to achieve the corresponding functions. All of the aforementioned modules reside in the same processor; alternatively, the modules may be located in different processors in any combination.

[0107] The processor contains a kernel, which retrieves the corresponding program units from memory. One or more kernels can be configured, and adjusting kernel parameters can address the problems of poor temperature control and high power consumption caused by the susceptibility of existing fuel cell heat sinks to environmental factors.

[0108] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0109] This invention provides a computer-readable storage medium including a stored program, wherein, when the program is executed, a control method for controlling the device containing the computer-readable storage medium to perform the operation of the heat sink is provided.

[0110] Specifically, the control methods for radiator operation include:

[0111] Step S201: Obtain the initial operating parameters of the radiator fan. The initial operating parameters include at least the initial duty cycle and the initial airflow direction of the radiator fan.

[0112] Specifically, the duty cycle of the radiator fan is related to the fan speed, and the two have the same meaning. Therefore, only one of them needs to be obtained and adjusted.

[0113] Step S202: Obtain the environmental parameters of the radiator fan. The environmental parameters characterize the environmental conditions in the space where the radiator is located. The environmental parameters include at least the environmental wind direction and the environmental precipitation.

[0114] Specifically, environmental parameters include not only wind direction and precipitation, but also wind speed. When the wind speed increases significantly, the air flows faster, and the amount of heat dissipated by the air increases significantly. Therefore, the fan speed can be appropriately reduced to keep the overall heat dissipation constant.

[0115] Step S203: The initial duty cycle of the radiator fan is corrected using the above-mentioned ambient precipitation to determine the corrected duty cycle, and / or the initial wind direction of the radiator fan is corrected using the above-mentioned ambient wind direction to determine the corrected wind direction.

[0116] Specifically, in practical applications, a three-hole speed meter installed on the radiator can also detect the ambient wind speed. At this time, the duty cycle of the radiator fan can be adjusted according to the two parameters of ambient wind speed and ambient precipitation to control the heat dissipation of the radiator.

[0117] Optionally, the initial duty cycle of the radiator fan is corrected using the aforementioned ambient precipitation to determine the corrected duty cycle, including: obtaining a first correction coefficient, wherein the first correction coefficient is the ratio of a first heat dissipation to a second heat dissipation, wherein the first heat dissipation is the heat dissipated by ambient rainwater at the current moment, and the second heat dissipation is the heat dissipated by the radiator coolant at the current moment, wherein the first heat dissipation is related to the aforementioned ambient precipitation at the current moment, and the aforementioned ambient rainwater is the rainwater in the space where the radiator is located; obtaining a second correction coefficient, wherein the second correction coefficient is the ratio of a third heat dissipation to a fourth heat dissipation, wherein the third heat dissipation is the heat dissipated by the aforementioned ambient precipitation at the target moment. The heat dissipated by the rainwater, the fourth heat dissipation is the heat dissipated by the radiator coolant at the target time, the third heat dissipation is related to the environmental precipitation at the target time, and the current time is the time after a preset time has elapsed since the target time; a correction difference and / or a correction ratio are determined based on the first correction coefficient and the second correction coefficient, the correction difference being the difference between the first correction coefficient and the second correction coefficient, and the correction ratio being the ratio between the first correction coefficient and the second correction coefficient; the duty cycle of the radiator fan is corrected based on the correction difference and / or the correction ratio to determine the corrected duty cycle.

[0118] Optionally, before obtaining the first correction coefficient, the method further includes: obtaining the volume of the radiator coolant per unit time, the inlet temperature of the radiator, the outlet temperature of the radiator, the specific heat capacity of the radiator coolant, and the density of the radiator coolant; and constructing a first heat dissipation formula Q1 = c1(ρ1V1)(T) based on the volume of the radiator coolant per unit time, the inlet temperature of the radiator, the outlet temperature of the radiator, the specific heat capacity of the radiator coolant, and the density of the radiator coolant. in -T out ), where V1 is the volume of the radiator coolant per unit time, T in The inlet temperature of the aforementioned radiator, T out Let c1 be the outlet temperature of the radiator, ρ1 be the specific heat capacity of the radiator coolant, ρ1 be the density of the radiator coolant, and Q1 be the heat dissipated by the radiator coolant. Based on the first heat dissipation formula, determine the heat dissipated by the radiator coolant.

[0119] Optionally, before obtaining the first correction coefficient, the method further includes: obtaining the vaporization volume of the environmental rainwater per unit time, the vaporization temperature of the environmental rainwater, the ambient temperature, the specific heat capacity of the environmental rainwater, and the density of the environmental rainwater; and constructing a second heat dissipation formula Q2=c2(ρ2V2)(T) based on the vaporization volume of the environmental rainwater per unit time, the vaporization temperature of the environmental rainwater, the ambient temperature, the specific heat capacity of the environmental rainwater, and the density of the environmental rainwater. air -T0), where V2 is the vaporization volume of the aforementioned environmental rainwater per unit time, T air Let T0 be the vaporization temperature of the aforementioned environmental rainwater, C2 be the specific heat capacity of the aforementioned environmental rainwater, ρ2 be the density of the aforementioned environmental rainwater, and Q2 be the heat dissipated by the aforementioned environmental rainwater; and determine the heat dissipated by the environmental rainwater according to the aforementioned second heat dissipation formula.

[0120] Optionally, obtaining the vaporization volume of the aforementioned environmental rainwater per unit time includes: obtaining the heat dissipation area of ​​the aforementioned radiator fan, the number of the aforementioned radiator fans in operation, the volume of the aforementioned environmental rainwater per unit time, and the vaporization ratio of the aforementioned environmental rainwater; and constructing the vaporization volume formula V2=X×S×n×k based on the heat dissipation area of ​​the aforementioned radiator fan, the number of the aforementioned radiator fans in operation, the volume of the aforementioned environmental rainwater per unit time, and the vaporization ratio of the aforementioned environmental rainwater. α Where S is the heat dissipation area of ​​the radiator fan, n is the number of the radiator fans in operation, X is the volume of rainwater in the environment per unit time, and k α V1 represents the vaporization ratio of the aforementioned environmental rainwater, and V2 represents the vaporization volume of the aforementioned environmental rainwater per unit time. Based on the aforementioned vaporization volume formula, the vaporization volume of the aforementioned environmental rainwater per unit time is determined.

[0121] Optionally, the initial wind direction of the radiator fan is corrected using the aforementioned ambient wind direction to determine the corrected wind direction, including: adjusting the wind direction of the radiator fan according to the aforementioned ambient wind direction until the wind direction of the radiator fan is the same as the aforementioned ambient wind direction or the wind direction of the radiator fan reaches a wind direction threshold, and determining the adjusted wind direction of the radiator fan as the corrected wind direction.

[0122] Optionally, the above method further includes: obtaining the operating parameters of the fuel cell stack, wherein the operating parameters of the fuel cell stack include at least one of the following: stack voltage, stack current, and stack output power; and determining the total heat dissipation of the fuel cell stack based on the operating parameters of the fuel cell stack, wherein the total heat dissipation of the fuel cell stack is the sum of the heat dissipation of the radiator fan, the heat dissipation of ambient rainwater, and the heat dissipation of ambient wind speed.

[0123] This invention provides a processor for running a program, wherein the program executes a control method for the operation of a heat sink.

[0124] Specifically, the control methods for radiator operation include:

[0125] Step S201: Obtain the initial operating parameters of the radiator fan. The initial operating parameters include at least the initial duty cycle and the initial airflow direction of the radiator fan.

[0126] Specifically, the duty cycle of the radiator fan is related to the fan speed, and the two have the same meaning. Therefore, only one of them needs to be obtained and adjusted.

[0127] Step S202: Obtain the environmental parameters of the radiator fan. The environmental parameters characterize the environmental conditions in the space where the radiator is located. The environmental parameters include at least the environmental wind direction and the environmental precipitation.

[0128] Specifically, environmental parameters include not only wind direction and precipitation, but also wind speed. When the wind speed increases significantly, the air flows faster, and the amount of heat dissipated by the air increases significantly. Therefore, the fan speed can be appropriately reduced to keep the overall heat dissipation constant.

[0129] Step S203: The initial duty cycle of the radiator fan is corrected using the above-mentioned ambient precipitation to determine the corrected duty cycle, and / or the initial wind direction of the radiator fan is corrected using the above-mentioned ambient wind direction to determine the corrected wind direction.

[0130] Specifically, in practical applications, a three-hole speed meter installed on the radiator can also detect the ambient wind speed. At this time, the duty cycle of the radiator fan can be adjusted according to the two parameters of ambient wind speed and ambient precipitation to control the heat dissipation of the radiator.

[0131] Optionally, the initial duty cycle of the radiator fan is corrected using the aforementioned ambient precipitation to determine the corrected duty cycle, including: obtaining a first correction coefficient, wherein the first correction coefficient is the ratio of a first heat dissipation to a second heat dissipation, wherein the first heat dissipation is the heat dissipated by ambient rainwater at the current moment, and the second heat dissipation is the heat dissipated by the radiator coolant at the current moment, wherein the first heat dissipation is related to the aforementioned ambient precipitation at the current moment, and the aforementioned ambient rainwater is the rainwater in the space where the radiator is located; obtaining a second correction coefficient, wherein the second correction coefficient is the ratio of a third heat dissipation to a fourth heat dissipation, wherein the third heat dissipation is the heat dissipated by the aforementioned ambient precipitation at the target moment. The heat dissipated by the rainwater, the fourth heat dissipation is the heat dissipated by the radiator coolant at the target time, the third heat dissipation is related to the environmental precipitation at the target time, and the current time is the time after a preset time has elapsed since the target time; a correction difference and / or a correction ratio are determined based on the first correction coefficient and the second correction coefficient, the correction difference being the difference between the first correction coefficient and the second correction coefficient, and the correction ratio being the ratio between the first correction coefficient and the second correction coefficient; the duty cycle of the radiator fan is corrected based on the correction difference and / or the correction ratio to determine the corrected duty cycle.

[0132] Optionally, before obtaining the first correction coefficient, the method further includes: obtaining the volume of the radiator coolant per unit time, the inlet temperature of the radiator, the outlet temperature of the radiator, the specific heat capacity of the radiator coolant, and the density of the radiator coolant; and constructing a first heat dissipation formula Q1 = c1(ρ1V1)(T) based on the volume of the radiator coolant per unit time, the inlet temperature of the radiator, the outlet temperature of the radiator, the specific heat capacity of the radiator coolant, and the density of the radiator coolant. in -T out ), where V1 is the volume of the radiator coolant per unit time, T in The inlet temperature of the aforementioned radiator, T out Let c1 be the outlet temperature of the radiator, ρ1 be the specific heat capacity of the radiator coolant, ρ1 be the density of the radiator coolant, and Q1 be the heat dissipated by the radiator coolant. Based on the first heat dissipation formula, determine the heat dissipated by the radiator coolant.

[0133] Optionally, before obtaining the first correction coefficient, the method further includes: obtaining the vaporization volume of the environmental rainwater per unit time, the vaporization temperature of the environmental rainwater, the ambient temperature, the specific heat capacity of the environmental rainwater, and the density of the environmental rainwater; and constructing a second heat dissipation formula Q2=c2(ρ2V2)(T) based on the vaporization volume of the environmental rainwater per unit time, the vaporization temperature of the environmental rainwater, the ambient temperature, the specific heat capacity of the environmental rainwater, and the density of the environmental rainwater. air -T0), where V2 is the vaporization volume of the aforementioned environmental rainwater per unit time, T air Let T0 be the vaporization temperature of the aforementioned environmental rainwater, C2 be the specific heat capacity of the aforementioned environmental rainwater, ρ2 be the density of the aforementioned environmental rainwater, and Q2 be the heat dissipated by the aforementioned environmental rainwater; and determine the heat dissipated by the environmental rainwater according to the aforementioned second heat dissipation formula.

[0134] Optionally, obtaining the vaporization volume of the aforementioned environmental rainwater per unit time includes: obtaining the heat dissipation area of ​​the aforementioned radiator fan, the number of the aforementioned radiator fans in operation, the volume of the aforementioned environmental rainwater per unit time, and the vaporization ratio of the aforementioned environmental rainwater; and constructing the vaporization volume formula V2=X×S×n×k based on the heat dissipation area of ​​the aforementioned radiator fan, the number of the aforementioned radiator fans in operation, the volume of the aforementioned environmental rainwater per unit time, and the vaporization ratio of the aforementioned environmental rainwater. α Where S is the heat dissipation area of ​​the radiator fan, n is the number of the radiator fans in operation, X is the volume of rainwater in the environment per unit time, and k α V1 represents the vaporization ratio of the aforementioned environmental rainwater, and V2 represents the vaporization volume of the aforementioned environmental rainwater per unit time. Based on the aforementioned vaporization volume formula, the vaporization volume of the aforementioned environmental rainwater per unit time is determined.

[0135] Optionally, the initial wind direction of the radiator fan is corrected using the aforementioned ambient wind direction to determine the corrected wind direction, including: adjusting the wind direction of the radiator fan according to the aforementioned ambient wind direction until the wind direction of the radiator fan is the same as the aforementioned ambient wind direction or the wind direction of the radiator fan reaches a wind direction threshold, and determining the adjusted wind direction of the radiator fan as the corrected wind direction.

[0136] Optionally, the above method further includes: obtaining the operating parameters of the fuel cell stack, wherein the operating parameters of the fuel cell stack include at least one of the following: stack voltage, stack current, and stack output power; and determining the total heat dissipation of the fuel cell stack based on the operating parameters of the fuel cell stack, wherein the total heat dissipation of the fuel cell stack is the sum of the heat dissipation of the radiator fan, the heat dissipation of ambient rainwater, and the heat dissipation of ambient wind speed.

[0137] This invention provides a device including a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs at least the following steps:

[0138] Step S201: Obtain the initial operating parameters of the radiator fan. The initial operating parameters include at least the initial duty cycle and the initial airflow direction of the radiator fan.

[0139] Step S202: Obtain the environmental parameters of the radiator fan. The environmental parameters characterize the environmental conditions in the space where the radiator is located. The environmental parameters include at least the environmental wind direction and the environmental precipitation.

[0140] Step S203: The initial duty cycle of the radiator fan is corrected using the above-mentioned ambient precipitation to determine the corrected duty cycle, and / or the initial wind direction of the radiator fan is corrected using the above-mentioned ambient wind direction to determine the corrected wind direction.

[0141] The devices mentioned in this article can be servers, PCs, tablets, mobile phones, etc.

[0142] Optionally, the initial duty cycle of the radiator fan is corrected using the aforementioned ambient precipitation to determine the corrected duty cycle, including: obtaining a first correction coefficient, wherein the first correction coefficient is the ratio of a first heat dissipation to a second heat dissipation, wherein the first heat dissipation is the heat dissipated by ambient rainwater at the current moment, and the second heat dissipation is the heat dissipated by the radiator coolant at the current moment, wherein the first heat dissipation is related to the aforementioned ambient precipitation at the current moment, and the aforementioned ambient rainwater is the rainwater in the space where the radiator is located; obtaining a second correction coefficient, wherein the second correction coefficient is the ratio of a third heat dissipation to a fourth heat dissipation, wherein the third heat dissipation is the heat dissipated by the aforementioned ambient precipitation at the target moment. The heat dissipated by the rainwater, the fourth heat dissipation is the heat dissipated by the radiator coolant at the target time, the third heat dissipation is related to the environmental precipitation at the target time, and the current time is the time after a preset time has elapsed since the target time; a correction difference and / or a correction ratio are determined based on the first correction coefficient and the second correction coefficient, the correction difference being the difference between the first correction coefficient and the second correction coefficient, and the correction ratio being the ratio between the first correction coefficient and the second correction coefficient; the duty cycle of the radiator fan is corrected based on the correction difference and / or the correction ratio to determine the corrected duty cycle.

[0143] Optionally, before obtaining the first correction coefficient, the method further includes: obtaining the volume of the radiator coolant per unit time, the inlet temperature of the radiator, the outlet temperature of the radiator, the specific heat capacity of the radiator coolant, and the density of the radiator coolant; and constructing a first heat dissipation formula Q1 = c1(ρ1V1)(T) based on the volume of the radiator coolant per unit time, the inlet temperature of the radiator, the outlet temperature of the radiator, the specific heat capacity of the radiator coolant, and the density of the radiator coolant. in -T out ), where V1 is the volume of the radiator coolant per unit time, T in The inlet temperature of the aforementioned radiator, T out Let c1 be the outlet temperature of the radiator, ρ1 be the specific heat capacity of the radiator coolant, ρ1 be the density of the radiator coolant, and Q1 be the heat dissipated by the radiator coolant. Based on the first heat dissipation formula, determine the heat dissipated by the radiator coolant.

[0144] Optionally, before obtaining the first correction coefficient, the method further includes: obtaining the vaporization volume of the environmental rainwater per unit time, the vaporization temperature of the environmental rainwater, the ambient temperature, the specific heat capacity of the environmental rainwater, and the density of the environmental rainwater; and constructing a second heat dissipation formula Q2=c2(ρ2V2)(T) based on the vaporization volume of the environmental rainwater per unit time, the vaporization temperature of the environmental rainwater, the ambient temperature, the specific heat capacity of the environmental rainwater, and the density of the environmental rainwater. air -T0), where V2 is the vaporization volume of the aforementioned environmental rainwater per unit time, T air Let T0 be the vaporization temperature of the aforementioned environmental rainwater, C2 be the specific heat capacity of the aforementioned environmental rainwater, ρ2 be the density of the aforementioned environmental rainwater, and Q2 be the heat dissipated by the aforementioned environmental rainwater; and determine the heat dissipated by the environmental rainwater according to the aforementioned second heat dissipation formula.

[0145] Optionally, obtaining the vaporization volume of the aforementioned environmental rainwater per unit time includes: obtaining the heat dissipation area of ​​the aforementioned radiator fan, the number of the aforementioned radiator fans in operation, the volume of the aforementioned environmental rainwater per unit time, and the vaporization ratio of the aforementioned environmental rainwater; and constructing the vaporization volume formula V2=X×S×n×k based on the heat dissipation area of ​​the aforementioned radiator fan, the number of the aforementioned radiator fans in operation, the volume of the aforementioned environmental rainwater per unit time, and the vaporization ratio of the aforementioned environmental rainwater. α Where S is the heat dissipation area of ​​the radiator fan, n is the number of the radiator fans in operation, X is the volume of rainwater in the environment per unit time, and k αV1 represents the vaporization ratio of the aforementioned environmental rainwater, and V2 represents the vaporization volume of the aforementioned environmental rainwater per unit time. Based on the aforementioned vaporization volume formula, the vaporization volume of the aforementioned environmental rainwater per unit time is determined.

[0146] Optionally, the initial wind direction of the radiator fan is corrected using the aforementioned ambient wind direction to determine the corrected wind direction, including: adjusting the wind direction of the radiator fan according to the aforementioned ambient wind direction until the wind direction of the radiator fan is the same as the aforementioned ambient wind direction or the wind direction of the radiator fan reaches a wind direction threshold, and determining the adjusted wind direction of the radiator fan as the corrected wind direction.

[0147] Optionally, the above method further includes: obtaining the operating parameters of the fuel cell stack, wherein the operating parameters of the fuel cell stack include at least one of the following: stack voltage, stack current, and stack output power; and determining the total heat dissipation of the fuel cell stack based on the operating parameters of the fuel cell stack, wherein the total heat dissipation of the fuel cell stack is the sum of the heat dissipation of the radiator fan, the heat dissipation of ambient rainwater, and the heat dissipation of ambient wind speed.

[0148] This application also provides a computer program product, which, when executed on a data processing device, is suitable for executing an initialization program having at least the following method steps:

[0149] Step S201: Obtain the initial operating parameters of the radiator fan. The initial operating parameters include at least the initial duty cycle and the initial airflow direction of the radiator fan.

[0150] Step S202: Obtain the environmental parameters of the radiator fan. The environmental parameters characterize the environmental conditions in the space where the radiator is located. The environmental parameters include at least the environmental wind direction and the environmental precipitation.

[0151] Step S203: The initial duty cycle of the radiator fan is corrected using the above-mentioned ambient precipitation to determine the corrected duty cycle, and / or the initial wind direction of the radiator fan is corrected using the above-mentioned ambient wind direction to determine the corrected wind direction.

[0152] Optionally, the initial duty cycle of the radiator fan is corrected using the aforementioned ambient precipitation to determine the corrected duty cycle, including: obtaining a first correction coefficient, wherein the first correction coefficient is the ratio of a first heat dissipation to a second heat dissipation, wherein the first heat dissipation is the heat dissipated by ambient rainwater at the current moment, and the second heat dissipation is the heat dissipated by the radiator coolant at the current moment, wherein the first heat dissipation is related to the aforementioned ambient precipitation at the current moment, and the aforementioned ambient rainwater is the rainwater in the space where the radiator is located; obtaining a second correction coefficient, wherein the second correction coefficient is the ratio of a third heat dissipation to a fourth heat dissipation, wherein the third heat dissipation is the heat dissipated by the aforementioned ambient precipitation at the target moment. The heat dissipated by the rainwater, the fourth heat dissipation is the heat dissipated by the radiator coolant at the target time, the third heat dissipation is related to the environmental precipitation at the target time, and the current time is the time after a preset time has elapsed since the target time; a correction difference and / or a correction ratio are determined based on the first correction coefficient and the second correction coefficient, the correction difference being the difference between the first correction coefficient and the second correction coefficient, and the correction ratio being the ratio between the first correction coefficient and the second correction coefficient; the duty cycle of the radiator fan is corrected based on the correction difference and / or the correction ratio to determine the corrected duty cycle.

[0153] Optionally, before obtaining the first correction coefficient, the method further includes: obtaining the volume of the radiator coolant per unit time, the inlet temperature of the radiator, the outlet temperature of the radiator, the specific heat capacity of the radiator coolant, and the density of the radiator coolant; and constructing a first heat dissipation formula Q1 = c1(ρ1V1)(T) based on the volume of the radiator coolant per unit time, the inlet temperature of the radiator, the outlet temperature of the radiator, the specific heat capacity of the radiator coolant, and the density of the radiator coolant. in -T out ), where V1 is the volume of the radiator coolant per unit time, T in The inlet temperature of the aforementioned radiator, T out Let c1 be the outlet temperature of the radiator, ρ1 be the specific heat capacity of the radiator coolant, ρ1 be the density of the radiator coolant, and Q1 be the heat dissipated by the radiator coolant. Based on the first heat dissipation formula, determine the heat dissipated by the radiator coolant.

[0154] Optionally, before obtaining the first correction coefficient, the method further includes: obtaining the vaporization volume of the environmental rainwater per unit time, the vaporization temperature of the environmental rainwater, the ambient temperature, the specific heat capacity of the environmental rainwater, and the density of the environmental rainwater; and constructing a second heat dissipation formula Q2=c2(ρ2V2)(T) based on the vaporization volume of the environmental rainwater per unit time, the vaporization temperature of the environmental rainwater, the ambient temperature, the specific heat capacity of the environmental rainwater, and the density of the environmental rainwater. air -T0), where V2 is the vaporization volume of the aforementioned environmental rainwater per unit time, T air Let T0 be the vaporization temperature of the aforementioned environmental rainwater, C2 be the specific heat capacity of the aforementioned environmental rainwater, ρ2 be the density of the aforementioned environmental rainwater, and Q2 be the heat dissipated by the aforementioned environmental rainwater; and determine the heat dissipated by the environmental rainwater according to the aforementioned second heat dissipation formula.

[0155] Optionally, obtaining the vaporization volume of the aforementioned environmental rainwater per unit time includes: obtaining the heat dissipation area of ​​the aforementioned radiator fan, the number of the aforementioned radiator fans in operation, the volume of the aforementioned environmental rainwater per unit time, and the vaporization ratio of the aforementioned environmental rainwater; and constructing the vaporization volume formula V2=X×S×n×k based on the heat dissipation area of ​​the aforementioned radiator fan, the number of the aforementioned radiator fans in operation, the volume of the aforementioned environmental rainwater per unit time, and the vaporization ratio of the aforementioned environmental rainwater. α Where S is the heat dissipation area of ​​the radiator fan, n is the number of the radiator fans in operation, X is the volume of rainwater in the environment per unit time, and k α V1 represents the vaporization ratio of the aforementioned environmental rainwater, and V2 represents the vaporization volume of the aforementioned environmental rainwater per unit time. Based on the aforementioned vaporization volume formula, the vaporization volume of the aforementioned environmental rainwater per unit time is determined.

[0156] Optionally, the initial wind direction of the radiator fan is corrected using the aforementioned ambient wind direction to determine the corrected wind direction, including: adjusting the wind direction of the radiator fan according to the aforementioned ambient wind direction until the wind direction of the radiator fan is the same as the aforementioned ambient wind direction or the wind direction of the radiator fan reaches a wind direction threshold, and determining the adjusted wind direction of the radiator fan as the corrected wind direction.

[0157] Optionally, the above method further includes: obtaining the operating parameters of the fuel cell stack, wherein the operating parameters of the fuel cell stack include at least one of the following: stack voltage, stack current, and stack output power; and determining the total heat dissipation of the fuel cell stack based on the operating parameters of the fuel cell stack, wherein the total heat dissipation of the fuel cell stack is the sum of the heat dissipation of the radiator fan, the heat dissipation of ambient rainwater, and the heat dissipation of ambient wind speed.

[0158] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0159] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0160] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0161] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0162] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0163] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0164] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0165] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0166] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0167] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0168] 1) The control method for the operation of the radiator described in this application involves an radiator electrically connected to a fuel cell stack. The radiator includes a radiator fan. The method first acquires the initial operating parameters of the radiator fan, including at least the initial duty cycle and initial wind direction. Then, it acquires the environmental parameters of the radiator fan, which characterize the environmental conditions within the space where the radiator is located, including at least the environmental wind direction and precipitation. Next, it corrects the initial duty cycle of the radiator fan using the precipitation to determine a corrected duty cycle, and / or corrects the initial wind direction of the radiator fan using the wind direction to determine a corrected wind direction. Finally, it controls the operation of the radiator fan using the corrected duty cycle and / or the corrected wind direction. This method, by controlling the precipitation and wind direction, significantly enhances the temperature control accuracy of the radiator, resulting in a more stable fuel cell inlet temperature, better fuel cell performance, and reduced energy consumption. It solves the problem that existing fuel cell stack radiators are easily affected by environmental factors, leading to poor temperature control performance and high energy consumption.

[0169] 2) The fuel cell system of this application includes: a fuel cell stack having an outlet and an inlet; a radiator having an outlet and an inlet, wherein the outlet of the radiator is connected to the inlet of the fuel cell stack via a pipeline, and the inlet of the radiator is connected to the outlet of the fuel cell stack via another pipeline; the radiator includes a radiator fan; and the radiator is controlled by any of the aforementioned radiator operation control methods. This system, by controlling environmental precipitation and wind direction, significantly enhances the radiator temperature control accuracy, stabilizes the fuel cell inlet temperature, improves fuel cell performance, and reduces energy consumption. It solves the problem that existing fuel cell stack radiators are easily affected by environmental factors, resulting in poor temperature control performance and high energy consumption.

[0170] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for controlling the operation of a radiator, characterized in that, The radiator is electrically connected to the fuel cell stack, the radiator including a radiator fan, and the method includes: Obtain the initial operating parameters of the radiator fan, wherein the initial operating parameters include at least the initial duty cycle of the radiator fan and the initial airflow direction of the radiator fan; The environmental parameters of the radiator fan are obtained. The environmental parameters characterize the environmental conditions in the space where the radiator is located. The environmental parameters include at least the environmental wind direction and the environmental precipitation. The initial duty cycle of the radiator fan is corrected using the ambient precipitation to determine the corrected duty cycle, and / or the initial wind direction of the radiator fan is corrected using the ambient wind direction to determine the corrected wind direction. The operation of the radiator fan is controlled by the corrected duty cycle and / or the corrected airflow direction; The initial duty cycle of the radiator fan is corrected using the environmental precipitation data to determine the corrected duty cycle, including: Obtain a first correction coefficient, which is the ratio of a first heat dissipation to a second heat dissipation. The first heat dissipation is the heat dissipated by the ambient rainwater at the current moment, and the second heat dissipation is the heat dissipated by the radiator coolant at the current moment. The first heat dissipation is related to the ambient precipitation at the current moment, and the ambient rainwater is the rainwater in the space where the radiator is located. Obtain a second correction coefficient, which is the ratio of the third heat dissipation to the fourth heat dissipation. The third heat dissipation is the heat dissipated by the rainwater in the environment at the target time, and the fourth heat dissipation is the heat dissipated by the radiator coolant at the target time. The third heat dissipation is related to the precipitation in the environment at the target time, and the current time is the time after a preset time has elapsed from the target time. Based on the first correction coefficient and the second correction coefficient, a correction difference and / or a correction ratio are determined, wherein the correction difference is the difference between the first correction coefficient and the second correction coefficient, and the correction ratio is the ratio between the first correction coefficient and the second correction coefficient; The duty cycle of the radiator fan is corrected based on the correction difference and / or the correction ratio to determine the corrected duty cycle.

2. The control method according to claim 1, characterized in that, Before obtaining the first correction coefficient, the method further includes: The volume of the radiator coolant per unit time, the inlet temperature of the radiator, the outlet temperature of the radiator, the specific heat capacity of the radiator coolant, and the density of the radiator coolant are obtained. Based on the volume of the radiator coolant per unit time, the inlet temperature of the radiator, the outlet temperature of the radiator, the specific heat capacity of the radiator coolant, and the density of the radiator coolant, a first heat dissipation formula is constructed. ,in, The volume of the radiator coolant per unit time, The inlet temperature of the radiator, The outlet temperature of the radiator, The specific heat capacity of the coolant in the radiator, The density of the coolant in the radiator, The heat dissipated by the coolant in the radiator; The amount of heat dissipated by the radiator coolant is determined according to the first heat dissipation formula.

3. The control method according to claim 1, characterized in that, Before obtaining the first correction coefficient, the method further includes: The vaporization volume of the ambient rainwater, the vaporization temperature of the ambient rainwater, the ambient temperature, the specific heat capacity of the ambient rainwater, and the density of the ambient rainwater are obtained per unit time. Based on the vaporization volume of the ambient rainwater per unit time, the vaporization temperature of the ambient rainwater, the ambient temperature, the specific heat capacity of the ambient rainwater, and the density of the ambient rainwater, a second heat dissipation formula is constructed. ,in, The vaporization volume of the environmental rainwater per unit time. The vaporization temperature of the environmental rainwater, The ambient temperature, The specific heat capacity of the environmental rainwater and The density of the environmental rainwater, The heat dissipated by the rainwater in the environment; The amount of heat dissipated by rainwater in the environment is determined according to the second heat dissipation formula.

4. The control method according to claim 3, characterized in that, Obtaining the vaporization volume of the environmental rainwater per unit time includes: The heat dissipation area of ​​the radiator fan, the number of the radiator fans in operation, the volume of the ambient rainwater per unit time, and the vaporization ratio of the ambient rainwater are obtained. Based on the heat dissipation area of ​​the radiator fan, the number of radiator fans in operation, the volume of ambient rainwater per unit time, and the vaporization ratio of the ambient rainwater, a vaporization volume formula is constructed. ,in, The heat dissipation area of ​​the radiator fan, The number of the radiator fans in operation, The volume of environmental rainwater per unit time, The vaporization ratio of the environmental rainwater, The vaporization volume of the environmental rainwater per unit time; The vaporization volume of the environmental rainwater per unit time is determined according to the vaporization volume formula.

5. The control method according to claim 1, characterized in that, The initial airflow direction of the radiator fan is corrected using the ambient wind direction to determine the corrected airflow direction, including: Adjust the radiator fan's direction according to the ambient wind direction until the radiator fan's direction is the same as the ambient wind direction or the radiator fan's direction reaches a wind direction threshold, and determine the adjusted radiator fan's direction as the corrected wind direction.

6. The control method according to claim 1, characterized in that, The method further includes: Obtain the operating parameters of the fuel cell stack, wherein the operating parameters of the fuel cell stack include at least one of the following: stack voltage, stack current, and stack output power; Based on the operating parameters of the fuel cell stack, the total heat dissipation of the fuel cell stack is determined. The total heat dissipation of the fuel cell stack is the sum of the heat dissipation of the radiator fan, the heat dissipation of the ambient rainwater, and the heat dissipation of the ambient wind speed.

7. A fuel cell system, characterized in that, include: The fuel cell stack has an outlet and an inlet; A radiator has an outlet and an inlet, the outlet of the radiator being connected to the inlet of the fuel cell stack via a pipeline, and the inlet of the radiator being connected to the outlet of the fuel cell stack via another pipeline. The radiator includes a radiator fan, and the radiator is controlled by the radiator operation control method according to any one of claims 1 to 6.

8. The fuel cell system according to claim 7, characterized in that, The radiator also includes: A temperature sensor for detecting at least one of the following: the outlet temperature of the radiator, the inlet temperature of the radiator, and the ambient temperature; Three-hole velocimeter, used to detect ambient wind speed and / or ambient wind direction; Rain gauges are used to detect ambient precipitation.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the control method for operating the heat sink as described in any one of claims 1 to 6.

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