Method, device, equipment, medium and product for determining fan duty cycle

Abstract

The present application relates to a method, device, computer equipment, storage medium and computer program product for determining a fan duty cycle. The method comprises: first obtaining the air outlet temperature of the charging pile charging module, and if the air outlet temperature is greater than a first preset temperature threshold, determining a first temperature difference between the air outlet temperature and the first preset temperature threshold, then obtaining the air inlet temperature of the charging pile charging module and the fan duty cycle of the charging pile charging module, and determining a second temperature difference between the air inlet temperature and the air outlet temperature, and finally determining the duty cycle of the charging pile system according to the first temperature difference, the second temperature difference and the fan duty cycle of the charging pile charging module. The method provided in the present application can determine the duty cycle of the charging pile system according to the first temperature difference, the second temperature difference and the fan duty cycle of the charging pile charging module, and then adjust the air volume of the fan of the charging pile system according to the duty cycle of the charging pile system.

Description

Technical Field

[0001] The present application relates to the field of new energy charging and swapping technologies, and in particular to a method, device, computer equipment, storage medium and computer program product for determining a duty cycle of a wind turbine. Background Art

[0002] With the development of new energy charging and battery swapping technologies, the demand for high-power charging of electric vehicles is increasing. Charging piles need to be equipped with more and more charging modules. At the same time, to ensure the compact size of the charging piles, the charging modules need to be compressed as much as possible. However, since the charging modules generate a lot of heat during operation, this design of compressing the size of the charging modules will cause the heating of the charging modules per unit volume to be very serious. Excessive temperature can damage the components inside the charging modules, which in turn causes the charging pile to malfunction. Therefore, the heat dissipation design of the charging pile is a very important part of the charging pile's operational reliability.

[0003] Currently, most charging pile cooling designs on the market use a constant-speed exhaust system fan. However, charging piles generate very little heat when operating at low power output, but generate a lot of heat when operating at high power output. This constant-speed exhaust cooling method provides the air volume required for the charging module to output full power even at low power output. In other words, as long as the charging pile is charging, all fans inside the charging pile run at full speed. This cooling method not only wastes energy and generates very loud noise, but also causes the fans to age more easily when running at full speed for a long time, shortening their service life. Summary of the Invention

[0004] Based on this, it is necessary to provide a method, device, computer equipment, computer-readable storage medium and computer program product for determining the fan duty cycle that can adjust the air volume of the charging pile system fan according to actual needs to address the above technical problems.

[0005] In a first aspect, the present application provides a method for determining a duty cycle of a wind turbine, the method comprising:

[0006] Get the air outlet temperature of the charging module of the charging pile;

[0007] If the air outlet temperature is greater than a first preset temperature threshold, determining a first temperature difference between the air outlet temperature and the first preset temperature threshold;

[0008] Obtaining an air inlet temperature of a charging pile charging module and a fan duty cycle of the charging pile charging module, and determining a second temperature difference between the air inlet temperature and the air outlet temperature;

[0009] The duty cycle of the charging pile system is determined according to the first temperature difference, the second temperature difference, and the duty cycle of the fan of the charging pile charging module.

[0010] In one embodiment, determining the duty cycle of the charging pile system according to the first temperature difference, the second temperature difference, and the fan duty cycle of the charging pile charging module includes:

[0011] determining a first duty cycle according to the first temperature difference;

[0012] If the second temperature difference is less than or equal to the second preset temperature threshold, the maximum duty cycle is determined based on the first duty cycle and the fan duty cycle of the charging pile charging module, and the maximum duty cycle is determined as the duty cycle of the charging pile system, wherein the maximum duty cycle is the maximum value of the first duty cycle and the fan duty cycle of the charging pile charging module.

[0013] In one embodiment, determining a first duty cycle according to the first temperature difference includes:

[0014] Get multiple preset temperature ranges;

[0015] Obtaining a duty cycle corresponding to each of the preset temperature ranges;

[0016] The preset temperature range corresponding to the first temperature difference is acquired, and the first duty cycle is determined according to the acquired preset temperature range corresponding to the first temperature difference.

[0017] In one embodiment, determining the duty cycle of the charging pile system according to the first temperature difference, the second temperature difference, and the fan duty cycle of the charging pile charging module further includes:

[0018] If the second temperature difference is greater than the second preset temperature threshold, the maximum duty cycle of the charging pile system fan is determined as the duty cycle of the charging pile system, wherein the maximum duty cycle of the charging pile system fan is the duty cycle corresponding to the maximum design air volume of the charging pile system fan.

[0019] In one embodiment, the method further comprises:

[0020] If the air outlet temperature is less than or equal to the first preset temperature threshold, the charging pile system fan continues to operate according to the current duty cycle.

[0021] In one embodiment, the method further comprises:

[0022] If the second temperature difference is greater than a third preset temperature threshold, an alarm signal is issued.

[0023] In a second aspect, the present application further provides a device for determining a duty cycle of a wind turbine, the device comprising:

[0024] The first acquisition module is used to obtain the air outlet temperature of the charging module of the charging pile;

[0025] a first determining module, configured to determine a first temperature difference between the air outlet temperature and the first preset temperature threshold if the air outlet temperature is greater than a first preset temperature threshold;

[0026] a second acquisition module, configured to acquire an air inlet temperature of the charging pile charging module and a fan duty cycle of the charging pile charging module, and determine a second temperature difference between the air inlet temperature and the air outlet temperature;

[0027] The second determining module is used to determine the duty cycle of the charging pile system according to the first temperature difference, the second temperature difference and the duty cycle of the fan of the charging pile charging module.

[0028] In a third aspect, the present application further provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the method in any one of the above embodiments when executing the computer program.

[0029] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method in any one of the above embodiments.

[0030] In a fifth aspect, the present application further provides a computer program product, which includes a computer program that implements the steps of the method in any one of the above embodiments when executed by a processor.

[0031] The above-mentioned fan duty cycle determination method, device, computer equipment, storage medium and computer program product first obtain the outlet temperature of the charging pile charging module. If the outlet temperature is greater than the first preset temperature threshold, the first temperature difference between the outlet temperature and the first preset temperature threshold is determined. Then, the air inlet temperature of the charging pile charging module and the fan duty cycle of the charging pile charging module are obtained, and the second temperature difference between the air inlet temperature and the air outlet temperature is determined. Finally, the duty cycle of the charging pile system is determined based on the first temperature difference, the second temperature difference and the fan duty cycle of the charging pile charging module. The method provided in this application can determine the duty cycle of the charging pile system based on the first temperature difference, the second temperature difference and the fan duty cycle of the charging pile charging module, and then adjust the air volume of the charging pile system fan according to the duty cycle of the charging pile system. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A diagram illustrating an application environment of a method for determining a fan duty cycle in one embodiment;

[0033] Figure 21 is a flow chart of a method for determining a fan duty cycle in one embodiment;

[0034] Figure 3 A coordinate diagram showing the correspondence between a preset temperature range and a duty cycle of a charging pile system in one embodiment;

[0035] Figure 4 Schematic diagram of a method for determining a fan duty cycle in one embodiment;

[0036] Figure 5 is a principle flow chart of a method for determining a fan duty cycle in one embodiment;

[0037] Figure 6 is a structural block diagram of a device for determining a fan duty cycle in one embodiment;

[0038] Figure 7 FIG. 1 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0040] The fan duty cycle determination method provided in the embodiment of the present application can be applied to Figure 1 The charging pile system 11 shown includes a charging pile controller 111, multiple charging modules 112, multiple system fans 113, and multiple temperature sensors 114. Specifically, the temperature sensor 114 located at the air outlet of the charging module 112 collects the temperature at the air outlet of the charging module 112, and the charging pile controller 111 obtains the air outlet temperature of the charging module 112. If the air outlet temperature is greater than a first preset temperature threshold, the charging pile controller 111 determines a first temperature difference between the air outlet temperature and the first preset temperature threshold. Then, the temperature sensor 114 located at the air inlet of the charging module 112 collects the temperature at the air inlet of the charging module 112, and the charging pile controller 111 obtains the air inlet temperature of the charging module 112 and the fan duty cycle of the charging module 112. Then, the charging pile controller 111 determines a second temperature difference between the air inlet temperature and the air outlet temperature. The charging pile controller 111 determines the duty cycle of the system fan 113 based on the first temperature difference, the second temperature difference, and the fan duty cycle of the charging pile charging module.

[0041] In one embodiment, Figure 2 As shown, a method for determining the duty cycle of a fan is provided, and the method is applied to Figure 1 The charging pile controller 111 in FIG. 1 is taken as an example to illustrate, including the following steps:

[0042] S201. Obtain the air outlet temperature of the charging module of the charging pile.

[0043] The charging module is the component that provides electrical energy to the vehicle. Multiple temperature sensors are located at the air outlet of the charging module. The charging pile controller obtains the temperatures collected by these sensors and then calculates the average of these temperatures to obtain the outlet temperature. The charging pile controller 111 obtains the outlet temperature of the charging module.

[0044] S202: If the air outlet temperature is greater than a first preset temperature threshold, determine a first temperature difference between the air outlet temperature and the first preset temperature threshold.

[0045] After the charging pile controller determines the air outlet temperature, it is also necessary to determine whether the air outlet temperature is greater than the first preset temperature threshold, where the first preset temperature threshold is determined based on the heat dissipation performance of the charging pile. For example, if the heat dissipation performance of the charging pile is strong, a lower first preset temperature threshold can be set. When the air outlet temperature is greater than the first preset temperature threshold, it means that the air volume of the charging pile fan is not enough to discharge the heat in the charging pile normally, and the air volume needs to be increased.

[0046] The first temperature difference is a temperature difference value obtained by subtracting the first preset temperature threshold from the air outlet temperature.

[0047] S203: Obtain the air inlet temperature of the charging pile charging module and the fan duty cycle of the charging pile charging module, and determine a second temperature difference between the air inlet temperature and the air outlet temperature.

[0048] The second temperature difference is the temperature difference obtained by subtracting the air inlet temperature from the air outlet temperature.

[0049] When the air outlet temperature is greater than the first preset temperature threshold, the charging pile controller obtains the air inlet temperature of the charging module and the fan duty cycle of the charging module.

[0050] Multiple temperature sensors are arranged at the air inlet of the charging module. The charging pile controller obtains the temperatures collected by multiple temperature sensors at the air inlet of the charging module, and then calculates the average value of the multiple temperatures obtained to obtain the air inlet temperature of the charging module. Finally, the temperature difference is obtained by subtracting the air inlet temperature from the outlet temperature.

[0051] The fan duty cycle of the charging module is the actual duty cycle of the fan in the charging module when it is in operation. The fan duty cycle is used to characterize the air volume of the fan. For example, if the maximum air volume of the fan is 1000 CFM and the fan duty cycle at a certain moment is 10%, then the actual air volume of the fan at this time is 1000 * 10% = 100 CFM.

[0052] S204: Determine a duty cycle of the charging pile system according to the first temperature difference, the second temperature difference, and a duty cycle of a fan of the charging pile charging module.

[0053] This step is completed in the charging pile controller, which includes an error controller, a PWM (Pulse Width Modulation) regulator and a comparator. The error controller is used to determine whether the temperature of the air outlet of the charging module is greater than a first preset temperature threshold. The PWM regulator is used to obtain a first duty cycle based on the first temperature difference and a second duty cycle based on the second temperature difference. The comparator is used to compare the first duty cycle, the second duty cycle and the duty cycle of the fan of the charging module, and determine the maximum duty cycle among the three as the duty cycle of the charging pile system.

[0054] The duty cycle of the charging pile system is the duty cycle required by the fan of the charging pile system when it is in operation. The number of fans in the charging pile system is determined according to the heat dissipation requirements of the charging pile system. For example, the charging pile system includes four fans, F1, F2, F3 and F4. After the comparator determines the duty cycle of the charging pile system, the PWM regulator sends the duty cycle of the charging pile system to the four charging pile system fans at the same time. Each charging pile system fan adjusts its own air volume according to the received fan duty cycle.

[0055] The above-mentioned fan duty cycle determination method first obtains the outlet temperature of the charging pile charging module. If the outlet temperature is greater than the first preset temperature threshold, the first temperature difference between the outlet temperature and the first preset temperature threshold is determined. Then, the air inlet temperature of the charging pile charging module and the fan duty cycle of the charging pile charging module are obtained, and the second temperature difference between the air inlet temperature and the air outlet temperature is determined. Finally, the duty cycle of the charging pile system is determined based on the first temperature difference, the second temperature difference and the fan duty cycle of the charging pile charging module. The method provided in this application can determine the duty cycle of the charging pile system based on the first temperature difference, the second temperature difference and the fan duty cycle of the charging pile charging module, and then adjust the air volume of the charging pile system fan according to the duty cycle of the charging pile system.

[0056] In some embodiments, the duty cycle of the charging pile system is determined based on the first temperature difference, the second temperature difference and the duty cycle of the fan of the charging pile charging module, including: determining the first duty cycle based on the first temperature difference; if the second temperature difference is less than or equal to the second preset temperature threshold, determining the maximum duty cycle based on the first duty cycle and the duty cycle of the fan of the charging pile charging module, and determining the maximum duty cycle as the duty cycle of the charging pile system, wherein the maximum duty cycle is the maximum value of the first duty cycle and the duty cycle of the fan of the charging pile charging module.

[0057] In this step, the PWM regulator determines the corresponding first duty cycle based on the first temperature difference. The second preset temperature threshold is determined based on the heat dissipation performance of the charging pile system. When the second temperature difference is less than or equal to the second preset temperature threshold, it indicates that the temperature difference between the charging module inlet and outlet has no effect on the heat dissipation of the charging pile system. In this case, only the impact of the charging module outlet temperature and the charging module fan duty cycle on the heat dissipation of the charging pile system needs to be considered.

[0058] The method provided in this step can determine whether it is necessary to consider the impact of the temperature difference between the inlet and outlet of the charging module on the heat dissipation of the charging pile system by setting a second preset temperature threshold. If it is not necessary to consider it, the workload of the PWM regulator and the comparator can be reduced.

[0059] In some embodiments, determining the first duty cycle based on the first temperature difference includes: obtaining multiple preset temperature ranges; obtaining the duty cycle corresponding to each preset temperature range; obtaining the preset temperature range corresponding to the first temperature difference, and determining the first duty cycle based on the preset temperature range corresponding to the obtained first temperature difference.

[0060] In this step, each preset temperature range has a corresponding duty cycle. The corresponding relationship between the preset temperature range and the duty cycle of the charging pile system is determined according to the heat dissipation performance of the charging pile. For example, the corresponding relationship between the preset temperature range and the duty cycle of the charging pile system is as follows: Figure 3 As shown, when the preset temperature range is 0-40℃, the duty cycle of the charging pile system is 30%. When the preset temperature range is 40℃-60℃, the duty cycle of the charging pile system changes linearly between 30% and 100%. When the preset temperature range is greater than 60℃, the duty cycle of the charging pile system is 100%. If the first temperature difference is 50℃, then according to Figure 2 From the corresponding relationship in , it can be seen that the first duty cycle at this time is 65%.

[0061] The method provided in this step determines the first duty cycle based on the correspondence between the preset temperature range and the duty cycle of the charging pile system, which is conducive to more accurate adjustment of the air volume of the charging pile system fan, so that the system fan runs at a lower speed during low-power charging, and runs at a higher speed during high-power charging, thereby minimizing the fan energy consumption and reducing noise output.

[0062] In some embodiments, the duty cycle of the charging pile system is determined based on the first temperature difference, the second temperature difference and the duty cycle of the fan of the charging pile charging module, and also includes: if the second temperature difference is greater than the second preset temperature threshold, the maximum duty cycle of the charging pile system fan is determined as the duty cycle of the charging pile system, wherein the maximum duty cycle of the charging pile system fan is the duty cycle corresponding to the maximum design air volume of the charging pile system fan.

[0063] In this step, when the second temperature difference is greater than the second preset temperature threshold, it means that the temperature difference between the inlet and outlet of the charging module is the factor that has the greatest impact on the heat dissipation of the charging pile system. In order for the system to dissipate heat normally, the system fan needs to operate at the maximum air volume. At this time, the duty cycle of the system is the duty cycle corresponding to the maximum design air volume, that is, 100%.

[0064] In the method provided in this step, when the second temperature difference is greater than the second preset temperature threshold, the system directly operates at a duty cycle of 100%, which can effectively dissipate heat and prevent the system temperature from being too high and causing damage to components.

[0065] In some embodiments, the above method further includes: if the air outlet temperature is less than or equal to a first preset temperature threshold, the charging pile system fan continues to operate according to the current duty cycle.

[0066] In this step, when the outlet temperature is less than or equal to the first preset temperature threshold, it indicates that the heat dissipation of the charging pile system is normal and there is no danger of overheating. Therefore, there is no need to adjust the system fan air volume, and the system duty cycle continues to operate according to the current value.

[0067] The method provided in this step does not adjust the system fan speed when the outlet temperature is less than or equal to the first preset temperature threshold, which can minimize the fan energy consumption and reduce noise.

[0068] In some embodiments, the above method further includes: if the second temperature difference is greater than a third preset temperature threshold, issuing an alarm signal.

[0069] In this step, the third preset temperature threshold is the maximum temperature difference between the inlet and outlet of the charging module that the preset system can withstand. When the second temperature difference reaches the third preset temperature threshold, the system fan cannot dissipate heat normally even if it runs at the maximum speed. At this time, the system will issue an alarm signal to remind the staff to shut down the system or take other corresponding countermeasures in time.

[0070] The method provided in this step sends out an alarm signal when the second temperature difference is greater than the third preset temperature threshold, which can promptly remind staff to respond and effectively prevent the occurrence of danger.

[0071] In one embodiment, Figure 4 and Figure 5 As shown, Figure 4 FIG. 1 is a schematic diagram of the charging pile system structure in one embodiment. Figure 5 The flow chart of the fan duty cycle determination principle in one embodiment is as follows: Figure 4It can be seen that there are multiple system fans in the system, two temperature sensors PT1 and PT2 at the air inlet of the charging module, and two temperature sensors PT3 and PT4 at the air outlet of the charging module. The charging pile controller is a PWM speed control board. The PWM speed control board obtains the temperatures measured by temperature sensors PT3 and PT4, and calculates the average value of the temperatures measured by PT3 and PT4 to obtain the outlet temperature of the charging module. If the PWM speed control board determines that the outlet temperature is less than or equal to the first preset temperature threshold, the charging pile system fan continues to operate according to the current duty cycle. If the PWM speed control board determines that the outlet temperature is greater than the first preset temperature threshold, at this time, the PWM speed control board obtains the fan duty cycle of the charging module and the temperatures measured by temperature sensors PT1 and PT2, and calculates the first temperature difference between the outlet temperature and the first preset temperature threshold and the second temperature difference between the air inlet temperature and the air outlet temperature. If the second temperature difference is greater than the second preset temperature threshold, the maximum duty cycle of the charging pile system fan is determined as the duty cycle of the charging pile system. If the second temperature difference is less than or equal to the second preset temperature threshold, the duty cycle of the charging pile system is determined based on the first duty cycle determined by the first temperature difference and the fan duty cycle of the charging module.

[0072] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0073] Based on the same inventive concept, embodiments of the present application further provide a device for determining a fan duty cycle for implementing the aforementioned method for determining a fan duty cycle. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of one or more embodiments of the device for determining a fan duty cycle provided below can be found in the aforementioned method for determining a fan duty cycle, and will not be further elaborated here.

[0074] In one embodiment, Figure 6 As shown, a device 600 for determining a duty cycle of a wind turbine is provided, comprising: a first acquisition module 601, a first determination module 602, a second acquisition module 603 and a second determination module 604, wherein:

[0075] The first acquisition module 601 is used to obtain the air outlet temperature of the charging module of the charging pile;

[0076] A first determining module 602 is configured to determine a first temperature difference between the air outlet temperature and the first preset temperature threshold if the air outlet temperature is greater than a first preset temperature threshold;

[0077] A second acquisition module 603 is used to obtain the air inlet temperature of the charging pile charging module and the fan duty cycle of the charging pile charging module, and determine a second temperature difference between the air inlet temperature and the air outlet temperature;

[0078] The second determining module 604 is configured to determine the duty cycle of the charging pile system according to the first temperature difference, the second temperature difference, and the duty cycle of the fan of the charging pile charging module.

[0079] In one embodiment, the second determining module 604 includes:

[0080] a first determining unit, configured to determine a first duty cycle according to the first temperature difference;

[0081] The second determination unit is used to determine the maximum duty cycle based on the first duty cycle and the fan duty cycle of the charging pile charging module if the second temperature difference is less than or equal to the second preset temperature threshold, and determine the maximum duty cycle as the duty cycle of the charging pile system, wherein the maximum duty cycle is the maximum value of the first duty cycle and the fan duty cycle of the charging pile charging module.

[0082] In one embodiment, the first determination unit is further used to: obtain multiple preset temperature ranges; obtain the duty cycle corresponding to each preset temperature range; obtain the preset temperature range corresponding to the first temperature difference, and determine the first duty cycle based on the preset temperature range corresponding to the obtained first temperature difference.

[0083] In one embodiment, the second determination module 604 is also used to: if the second temperature difference is greater than the second preset temperature threshold, the maximum duty cycle of the charging pile system fan is determined as the duty cycle of the charging pile system, wherein the maximum duty cycle of the charging pile system fan is the duty cycle corresponding to the maximum design air volume of the charging pile system fan.

[0084] In one embodiment, the fan duty cycle determination device 600 is further configured to: if the air outlet temperature is less than or equal to a first preset temperature threshold, the charging pile system fan continues to operate according to the current duty cycle.

[0085] In one embodiment, the fan duty cycle determining device 600 is further configured to: issue an alarm signal if the second temperature difference is greater than a third preset temperature threshold.

[0086] Each module in the above-mentioned fan duty cycle determination device can be implemented in whole or in part through software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in hardware form, or can be stored in a memory in the computer device in software form, so that the processor can call and execute the corresponding operations of each module.

[0087] In one embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as follows: Figure 7 As shown. The computer device includes a processor, a memory, a communication interface, a display screen and an input device connected via a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a method for determining the duty cycle of a fan is implemented. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad provided on the computer device housing, or an external keyboard, touchpad or mouse.

[0088] Those skilled in the art will understand that Figure 7 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0089] In one embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the following steps when executing the computer program: obtaining the outlet temperature of the charging pile charging module; if the outlet temperature is greater than a first preset temperature threshold, determining a first temperature difference between the outlet temperature and the first preset temperature threshold; obtaining the inlet temperature of the charging pile charging module and the fan duty cycle of the charging pile charging module, and determining a second temperature difference between the inlet temperature and the outlet temperature; determining the duty cycle of the charging pile system according to the first temperature difference, the second temperature difference and the fan duty cycle of the charging pile charging module.

[0090] In one embodiment, the processor determines the duty cycle of the charging pile system based on the first temperature difference, the second temperature difference and the duty cycle of the fan of the charging pile charging module when executing a computer program, including: determining the first duty cycle based on the first temperature difference; if the second temperature difference is less than or equal to the second preset temperature threshold, determining the maximum duty cycle based on the first duty cycle and the duty cycle of the fan of the charging pile charging module, and determining the maximum duty cycle as the duty cycle of the charging pile system, wherein the maximum duty cycle is the maximum value of the first duty cycle and the duty cycle of the fan of the charging pile charging module.

[0091] In one embodiment, determining a first duty cycle based on a first temperature difference implemented by a processor when executing a computer program includes: obtaining a plurality of preset temperature ranges; obtaining a duty cycle corresponding to each preset temperature range; obtaining a preset temperature range corresponding to the first temperature difference, and determining the first duty cycle based on the preset temperature range corresponding to the obtained first temperature difference.

[0092] In one embodiment, the processor determines the duty cycle of the charging pile system based on the first temperature difference, the second temperature difference and the duty cycle of the fan of the charging pile charging module when executing the computer program, and also includes: if the second temperature difference is greater than the second preset temperature threshold, then the maximum duty cycle of the charging pile system fan is determined as the duty cycle of the charging pile system, wherein the maximum duty cycle of the charging pile system fan is the duty cycle corresponding to the maximum design air volume of the charging pile system fan.

[0093] In one embodiment, the above method implemented when the processor executes the computer program further includes: if the outlet temperature is less than or equal to the first preset temperature threshold, the charging pile system fan continues to operate according to the current duty cycle.

[0094] In one embodiment, the above method implemented when the processor executes the computer program further includes: if the second temperature difference is greater than a third preset temperature threshold, issuing an alarm signal.

[0095] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented: obtaining the outlet temperature of the charging pile charging module; if the outlet temperature is greater than a first preset temperature threshold, determining a first temperature difference between the outlet temperature and the first preset temperature threshold; obtaining the inlet temperature of the charging pile charging module and the fan duty cycle of the charging pile charging module, and determining a second temperature difference between the inlet temperature and the outlet temperature; determining the duty cycle of the charging pile system based on the first temperature difference, the second temperature difference and the fan duty cycle of the charging pile charging module.

[0096] In one embodiment, the computer program implemented when being executed by the processor determines the duty cycle of the charging pile system based on the first temperature difference, the second temperature difference and the duty cycle of the fan of the charging pile charging module, including: determining the first duty cycle based on the first temperature difference; if the second temperature difference is less than or equal to the second preset temperature threshold, determining the maximum duty cycle based on the first duty cycle and the duty cycle of the fan of the charging pile charging module, and determining the maximum duty cycle as the duty cycle of the charging pile system, wherein the maximum duty cycle is the maximum value of the first duty cycle and the duty cycle of the fan of the charging pile charging module.

[0097] In one embodiment, the computer program implemented by the processor when executing the computer program to determine the first duty cycle based on the first temperature difference includes: obtaining multiple preset temperature ranges; obtaining the duty cycle corresponding to each preset temperature range; obtaining the preset temperature range corresponding to the first temperature difference, and determining the first duty cycle based on the preset temperature range corresponding to the obtained first temperature difference.

[0098] In one embodiment, the computer program implemented when being executed by the processor determines the duty cycle of the charging pile system based on the first temperature difference, the second temperature difference and the duty cycle of the fan of the charging pile charging module, and also includes: if the second temperature difference is greater than the second preset temperature threshold, then the maximum duty cycle of the charging pile system fan is determined as the duty cycle of the charging pile system, wherein the maximum duty cycle of the charging pile system fan is the duty cycle corresponding to the maximum design air volume of the charging pile system fan.

[0099] In one embodiment, the above method implemented when the computer program is executed by the processor also includes: if the outlet temperature is less than or equal to the first preset temperature threshold, the charging pile system fan continues to operate according to the current duty cycle.

[0100] In one embodiment, the above method implemented when the computer program is executed by the processor further includes: if the second temperature difference is greater than a third preset temperature threshold, issuing an alarm signal.

[0101] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps: obtaining the air outlet temperature of a charging pile charging module; if the air outlet temperature is greater than a first preset temperature threshold, determining a first temperature difference between the air outlet temperature and the first preset temperature threshold; obtaining the air inlet temperature of the charging pile charging module and the fan duty cycle of the charging pile charging module, and determining a second temperature difference between the air inlet temperature and the air outlet temperature; determining the duty cycle of the charging pile system based on the first temperature difference, the second temperature difference and the fan duty cycle of the charging pile charging module.

[0102] In one embodiment, the computer program implemented when being executed by the processor determines the duty cycle of the charging pile system based on the first temperature difference, the second temperature difference and the duty cycle of the fan of the charging pile charging module, including: determining the first duty cycle based on the first temperature difference; if the second temperature difference is less than or equal to the second preset temperature threshold, determining the maximum duty cycle based on the first duty cycle and the duty cycle of the fan of the charging pile charging module, and determining the maximum duty cycle as the duty cycle of the charging pile system, wherein the maximum duty cycle is the maximum value of the first duty cycle and the duty cycle of the fan of the charging pile charging module.

[0103] In one embodiment, the computer program implemented by the processor when executing the computer program to determine the first duty cycle based on the first temperature difference includes: obtaining multiple preset temperature ranges; obtaining the duty cycle corresponding to each preset temperature range; obtaining the preset temperature range corresponding to the first temperature difference, and determining the first duty cycle based on the preset temperature range corresponding to the obtained first temperature difference.

[0104] In one embodiment, the computer program implemented when being executed by the processor determines the duty cycle of the charging pile system based on the first temperature difference, the second temperature difference and the duty cycle of the fan of the charging pile charging module, and also includes: if the second temperature difference is greater than the second preset temperature threshold, then the maximum duty cycle of the charging pile system fan is determined as the duty cycle of the charging pile system, wherein the maximum duty cycle of the charging pile system fan is the duty cycle corresponding to the maximum design air volume of the charging pile system fan.

[0105] In one embodiment, the above method implemented when the computer program is executed by the processor also includes: if the outlet temperature is less than or equal to the first preset temperature threshold, the charging pile system fan continues to operate according to the current duty cycle.

[0106] In one embodiment, the above method implemented when the computer program is executed by the processor further includes: if the second temperature difference is greater than a third preset temperature threshold, issuing an alarm signal.

[0107] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0108] Those skilled in the art will understand that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory may include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processor involved in the various embodiments provided herein may be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, etc., but are not limited to these.

[0109] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0110] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A method for determining a fan duty cycle, characterized in that: The method comprises: Get the air outlet temperature of the charging module of the charging pile; If the air outlet temperature is greater than a first preset temperature threshold, determining a first temperature difference between the air outlet temperature and the first preset temperature threshold; If the air outlet temperature is greater than the first preset temperature threshold, obtaining the air inlet temperature of the charging pile charging module and the fan duty cycle of the charging pile charging module, and determining a second temperature difference between the air inlet temperature and the air outlet temperature; Determining a duty cycle of the charging pile system according to the first temperature difference, the second temperature difference, and a fan duty cycle of the charging pile charging module; The determining the duty cycle of the charging pile system according to the first temperature difference, the second temperature difference, and the fan duty cycle of the charging pile charging module includes: Determine a first duty cycle based on the first temperature difference, and determine a second duty cycle based on the second temperature difference; compare the first duty cycle, the second duty cycle, and the fan duty cycle; and determine the maximum duty cycle among the three as the duty cycle of the charging pile system.

2. The method according to claim 1, characterized in that The determining the duty cycle of the charging pile system according to the first temperature difference, the second temperature difference, and the fan duty cycle of the charging pile charging module includes: If the second temperature difference is less than or equal to the second preset temperature threshold, the maximum duty cycle is determined based on the first duty cycle and the fan duty cycle of the charging pile charging module, and the maximum duty cycle is determined as the duty cycle of the charging pile system, wherein the maximum duty cycle is the maximum value of the first duty cycle and the fan duty cycle of the charging pile charging module.

3. The method according to claim 2, characterized in that The determining a first duty cycle according to the first temperature difference includes: Get multiple preset temperature ranges; Obtaining a duty cycle corresponding to each of the preset temperature ranges; The preset temperature range corresponding to the first temperature difference is acquired, and the first duty cycle is determined according to the acquired preset temperature range corresponding to the first temperature difference.

4. The method according to claim 1, wherein The determining the duty cycle of the charging pile system according to the first temperature difference, the second temperature difference and the fan duty cycle of the charging pile charging module further includes: If the second temperature difference is greater than the second preset temperature threshold, the maximum duty cycle of the charging pile system fan is determined as the duty cycle of the charging pile system, wherein the maximum duty cycle of the charging pile system fan is the duty cycle corresponding to the maximum design air volume of the charging pile system fan.

5. The method according to claim 1, wherein The method further comprises: If the air outlet temperature is less than or equal to the first preset temperature threshold, the charging pile system fan continues to operate according to the current duty cycle.

6. The method according to claim 1, characterized in that The method further comprises: If the second temperature difference is greater than a third preset temperature threshold, an alarm signal is issued.

7. A device for determining a fan duty cycle, characterized in that: The device comprises: The first acquisition module is used to obtain the air outlet temperature of the charging module of the charging pile; a first determining module, configured to determine a first temperature difference between the air outlet temperature and the first preset temperature threshold if the air outlet temperature is greater than a first preset temperature threshold; a second acquisition module, configured to acquire, if the air outlet temperature is greater than the first preset temperature threshold, an air inlet temperature of the charging pile charging module and a fan duty cycle of the charging pile charging module, and determine a second temperature difference between the air inlet temperature and the air outlet temperature; a second determining module, configured to determine a duty cycle of the charging pile system according to the first temperature difference, the second temperature difference, and a fan duty cycle of the charging pile charging module; The second determination module is further used to determine a first duty cycle based on the first temperature difference, and to determine a second duty cycle based on the second temperature difference; compare the first duty cycle, the second duty cycle, and the fan duty cycle; and determine the maximum duty cycle among the three as the duty cycle of the charging pile system.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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