Charging pile module fan control method, system and equipment and storage medium

Abstract

The invention belongs to the technical field of fan control, and discloses a charging pile module fan control method, system and device and a storage medium. The charging pile module fan control method comprises the steps of obtaining a charging pile given load; determining a charging pile set temperature input value and a current module fan rotating speed output value according to the charging pile given load; the main regulator controls the set rotating speed of the module fan according to the difference value between the current charging pile actually-detected in-pile temperature output value and the set temperature input value; the auxiliary regulator regulates the rotating speed of the module fan through the electronic controller according to the difference value between the current rotating speed output value of the module fan and the set rotating speed of the module fan; the rotating speed of a fan of the adjusting module is converted into adjusting temperature through a temperature-rotating speed transfer function to act on a main adjuster, the defect that in a traditional heat dissipation mode, the fan is started for emergency heat dissipation after temperature accumulation is overcome, the temperature in the charging pile is controlled within a safe operation range, and the equipment failure risk caused by high temperature is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of fan control, and relates to a method, system, device and storage medium for controlling a fan of a charging pile module. Background Art

[0002] At present, the cooling systems of charging piles on the market generally use high-speed fans to achieve the cooling function. During the operation of the charging piles, the noise value reaches 80dB. The large noise has an adverse impact on the surrounding environment, especially the residential environment, and forms noise pollution.

[0003] Existing EC fans (fans with intelligent control functions) adjust the fan speed accordingly based on the temperature detected by the sensor. The sensor senses the temperature inside the charging pile, and then decides whether to accelerate, decelerate, or maintain the current speed of the fan according to the temperature to achieve a suitable heat dissipation effect. However, when the sensor detects the temperature inside the charging pile, the charging pile is already running. During the operation, heat has accumulated inside the charging pile. In other words, there is a relative lag in the process from heat generation to detection and feedback of temperature information. This lag may result in the failure to adjust the fan speed in a timely and effective manner to dissipate heat in the early stage of heat accumulation, causing the temperature inside the charging pile to exceed the reasonable range in a short period of time.

[0004] Therefore, an EC fan with a feedforward feedback function is needed so that the charging pile can be turned on and adjust the cooling fan speed in time during use. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a charging pile module fan control method, system, equipment and storage medium. The feedforward signal is the given load of the charging pile through a function generator as the input signal of the outer slow loop, and then the sum of it and the output of the main regulator is used as the given value of the sub-regulator. The input measurement value of the inner fast loop is the fan speed, which solves the technical problem of starting the fan for emergency heat dissipation only after temperature accumulation in traditional heat dissipation methods.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: The present invention provides a method for controlling a module fan of a charging pile, comprising: obtaining a given load of a charging pile based on vehicle demand; determining a set temperature input value of a charging pile and a current module fan speed output value according to the given load of the charging pile; a main regulator controls a set speed of a module fan according to a difference between a temperature output value in a current charging pile actually detected and a set temperature input value; a sub-regulator adjusts the module fan speed through an electronic controller according to a difference between the current module fan speed output value and the set speed of the module fan; and the adjustment module fan speed is converted into an adjustment temperature through a temperature-speed transfer function to act on the main regulator.

[0007] Furthermore, the output of the secondary regulator is:

[0008] in, To output the predicted value of the fan speed of the current module through the electronic controller, is the current module fan speed output value, is the rate of change of the deviation between the set speed value of the module fan at the current moment and the actual detection module fan speed value, The difference between the current module fan speed output value and the module fan set speed. is the proportional constant of the sub-regulator, is the integral constant of the sub-regulator, is the differential constant of the sub-regulator.

[0009] Furthermore, the current module fan speed output value for:

[0010] The rate of change of the deviation between the set speed value of the module fan at the current moment and the actual detection module fan speed value for:

[0011] The difference between the current module fan speed output value and the module fan set speed for:

[0012] in, For the current moment, For a moment in the past, For the past two moments, Enter the setpoint for the module fan speed, It is the actual detection value of the module fan speed.

[0013] Furthermore, the output of the main regulator is:

[0014] in, The predicted value of the temperature output in the charging pile after the main regulator acts on the temperature-speed transfer function G1(S), It is the deviation between the set temperature value generated by the function generator after the given load of the charging pile and the actual temperature value detected in the charging pile. It is the rate of change of the deviation between the temperature set value generated by the function generator after the given load of the charging pile at the current moment and the actual temperature value detected in the charging pile. It is the change value of the deviation change rate between the temperature setting value generated by the function generator after the given load of the charging pile at the current moment and the actual temperature value detected in the charging pile. is the proportional constant of the main regulator, is the integral constant of the main regulator, is the differential constant of the main regulator.

[0015] Furthermore, the function generator is a negative increasing function:

[0016] in, The current charging current of the charging pile, the value range is 0-250, It is the actual temperature output value of the current charging pile, ranging from 25-50.

[0017] Furthermore, the deviation between the set temperature value generated by the function generator after the given load of the charging pile and the actual temperature value detected in the charging pile for:

[0018] The rate of change of the deviation between the temperature setting value generated by the function generator after the given load of the charging pile at the current moment and the actual temperature value detected in the charging pile for:

[0019] The value of the change rate of the deviation between the temperature setting value generated by the function generator after the given load of the charging pile at the current moment and the actual temperature value detected in the charging pile for:

[0020] in, For the current moment, For a moment in the past, For the past two moments, It is the set temperature value generated by the function generator after the given load of the charging pile is passed through. It is the actual detection value of the temperature inside the charging pile.

[0021] Furthermore, the charging pile can adjust the temperature of the charging pile to -20°C during operation by fine-tuning the electronic controller. 50℃.

[0022] The present invention also provides a charging pile module fan control system, comprising: an acquisition module, used to acquire a given load of the charging pile; A confirmation module, used to determine a charging pile set temperature input value and a current module fan speed output value according to a given load of the charging pile; The control module is used for the main regulator to control the set speed of the module fan according to the difference between the actual temperature output value of the charging pile and the set temperature input value; The regulating module is used for the auxiliary regulator to regulate the module fan speed through the electronic controller according to the difference between the current module fan speed output value and the set speed of the module fan.

[0023] The present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above-mentioned charging pile module fan control method when executing the computer program.

[0024] The present invention also provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps of the above-mentioned charging pile module fan control method are implemented.

[0025] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention discloses a method for controlling a module fan of a charging pile. A main regulator pre-adjusts the module fan speed according to the difference between an actual temperature output value detected in the current charging pile and a set temperature input value, and starts to dissipate heat before the load of the charging pile increases, thereby effectively avoiding the accumulation of temperature in the pile, controlling the temperature in the charging pile within a safe operating range, and reducing the risk of equipment failure caused by high temperature.

[0026] The present invention provides a method for controlling a module fan of a charging pile. A sub-regulator adjusts the module fan speed through an electronic controller according to the difference between a current module fan speed output value and a set module fan speed, thereby ensuring that the heat dissipation efficiency matches the actual demand of the charging pile, avoiding the situation in which the fan has to be started for emergency heat dissipation due to temperature accumulation in a traditional heat dissipation method, thereby improving the overall efficiency of the heat dissipation system.

[0027] The present invention provides a charging pile module fan control method, which can significantly extend the service life of the charging pile and reduce maintenance costs by dissipating heat in advance and maintaining the temperature inside the charging pile within a safe range.

[0028] The present invention provides a charging pile module fan control method, which pre-adjusts the module fan set speed value according to a given load strategy, and has a significant beneficial effect on the heat dissipation of the charging pile. It can not only prevent temperature accumulation, optimize heat dissipation efficiency, extend equipment life and improve user experience, but also enhance system stability and promote energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a flow chart of a charging pile module fan control method of the present invention; Figure 2 This is a principle block diagram of a fuzzy control method for a liquid cooler according to the present invention. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0031] Example 1 The present invention provides a method for controlling a module fan of a charging pile, comprising: obtaining a given load of the charging pile; determining a set temperature input value of the charging pile and a current module fan speed output value according to the given load of the charging pile; a main regulator controls the set speed of the module fan according to the difference between the temperature output value in the current charging pile actually detected and the set temperature input value; a sub-regulator adjusts the module fan speed through an electronic controller according to the difference between the current module fan speed output value and the set speed of the module fan, and the adjustment module fan speed is converted into an adjustment temperature through a temperature-speed transfer function to act on the main regulator.

[0032] Specifically, the charging pile set temperature input value is determined according to the given load of the charging pile. In this embodiment, the given load of the charging pile is the magnitude of the vehicle charging current. It is necessary to ensure the normal operation of the equipment and minimize energy consumption and equipment loss. Generally, the given load of the charging pile is between -20 and 50 degrees Celsius.

[0033] For most new energy vehicles, when the SOC value is low in the early stage of charging, the charging demand current is large and the heat is serious. At this time, the temperature set value can be reduced and the fan speed can be increased.

[0034] By sampling multiple groups of charging piles’ current vehicle charging current and the actual temperature output values ​​of the current charging piles, the function generator can be obtained as follows:

[0035] in, The current charging current of the charging pile, the value range is 0-250, It is the actual temperature output value of the current charging pile, ranging from 25-50.

[0036] That is, the greater the current charging current of the charging pile, the smaller the set temperature value of the charging pile, and the greater the adjustment of the current module fan speed value.

[0037] If the ambient temperature is high, under the same given load, lower the set temperature to ensure sufficient heat dissipation temperature difference. When the ambient temperature is low, the set temperature can be appropriately increased.

[0038] The current module fan speed output value is determined according to the given load of the charging pile. The heat dissipation capacity of the current module fan mainly depends on its speed. The higher the fan speed, the greater the amount of air flowing through the charging pile per unit time, and the stronger the ability to take away heat.

[0039] The main regulator transmits the difference between the actual temperature output value of the current charging pile and the set temperature input value to the sub-regulator PID1. The sub-regulator PID1 calculates and adjusts the frequency or voltage of the electronic controller to quickly adjust the speed of the current module fan to adapt to the drastic temperature changes.

[0040] The output of the sub-regulator PID1 is

[0041] in, To output the predicted value of the fan speed of the current module through the electronic controller, is the current module fan speed output value, is the rate of change of the deviation between the set speed value of the module fan at the current moment and the actual detection module fan speed value, It is the difference between the current module fan speed output value and the module fan set speed.

[0042] is the proportional constant of the sub-regulator, is the integral constant of the sub-regulator, is the differential constant of the sub-regulator, , , It is obtained by trial and error. First, the integral value is changed until it is determined that the fan speed deviation of the current module is in a decreasing state, and the initial integral value can be obtained; then, the proportional value is changed to determine that the fan speed deviation of the current module continues to be in a decreasing state, and an initial proportional value can be obtained; finally, the differential value is changed to determine that when the fan speed deviation of the current module continues to be in a decreasing state, the initial differential value can be output to determine the output. , , Parameter value.

[0043] Current module fan speed output value for:

[0044] in, Enter the setpoint for the module fan speed, It is the actual detection value of the module fan speed.

[0045] The rate of change of the deviation between the set speed value of the module fan at the current moment and the actual detection module fan speed value for:

[0046] in, For the current moment, For a moment in the past.

[0047] The difference between the current module fan speed output value and the module fan set speed for:

[0048] in, For the current moment, For a moment in the past, For the past two moments.

[0049] The fan speed of the auxiliary regulator output adjustment module acts on the main regulator PID2 through the temperature-speed transfer function.

[0050] The output of the main regulator PID2 is

[0051] in, The predicted value of the temperature output in the charging pile after the main regulator acts on the temperature-speed transfer function G1(S), It is the deviation between the set temperature value generated by the function generator after the given load of the charging pile and the actual temperature value detected in the charging pile. It is the rate of change of the deviation between the temperature set value generated by the function generator after the given load of the charging pile at the current moment and the actual temperature value detected in the charging pile. It is the change value of the deviation change rate between the temperature set value generated by the function generator after the given load of the charging pile at the current moment and the actual temperature value detected in the charging pile.

[0052] is the proportional constant of the main regulator, is the integral constant of the main regulator, is the differential constant of the main regulator. , , It is obtained by trial and error. First, the integral value is changed until it is determined that the fan speed deviation of the current module is in a decreasing state, and the initial integral value can be obtained; then, the proportional value is changed to determine that the fan speed deviation of the current module continues to be in a decreasing state, and an initial proportional value can be obtained; finally, the differential value is changed to determine that when the fan speed deviation of the current module continues to be in a decreasing state, the initial differential value can be output to determine the output. , , Parameter value.

[0053] The deviation between the set temperature value generated by the function generator after the given load of the charging pile and the actual temperature value detected in the charging pile for:

[0054] in, The set temperature value generated by the function generator after the given load of the charging pile is It is the actual detection value of the temperature inside the charging pile.

[0055] The rate of change of the deviation between the temperature set value generated by the function generator after the given load of the charging pile at the current moment and the actual temperature value detected in the charging pile for:

[0056] in, For the current moment, For a moment in the past.

[0057] The change value of the deviation change rate between the temperature setting value generated by the function generator after the given load of the charging pile at the current moment and the actual temperature value detected in the charging pile for:

[0058] in, For the current moment, For a moment in the past, For the past two moments.

[0059] like Figure 2As shown in the figure, if the set temperature value of the charging pile is 45℃ and the current charging current of the charging pile is 50A, when the actual temperature detected in the charging pile is 45℃, the speed of the module fan will not be adjusted. If the temperature value in the charging pile at the current moment minus the set temperature value is a positive deviation, the auxiliary regulator and the main regulator will be adjusted to increase the speed increment of the module fan for cooling. If the temperature value of the charging pile module at the current moment minus the set temperature value is a negative deviation, the auxiliary regulator and the main regulator will be adjusted to reduce the speed increment of the module fan, and cooling is not required at the current moment. The temperature difference is adjusted with 5℃ as an order of magnitude, the minimum speed of the module fan is 0, the temperature difference is reduced or increased by one order of magnitude at 0-5℃, the temperature difference is reduced or increased by two orders of magnitude at 5-10℃, and the temperature difference is reduced or increased by three orders of magnitude at 10-15℃, and so on.

[0060] Example 2 The present invention discloses a charging pile module fan control system, comprising an acquisition module, a confirmation module, a control module and an adjustment module, wherein the acquisition module is used to acquire a given load of the charging pile; the confirmation module is used to determine a set temperature input value of the charging pile and a current module fan speed output value according to the given load of the charging pile; the control module is used for a main regulator to control a set speed of the module fan according to a difference between a temperature output value actually detected in the current charging pile and a set temperature input value; and the adjustment module is used for a sub-regulator to adjust the module fan speed through an electronic controller according to a difference between the current module fan speed output value and the set speed of the module fan.

[0061] Example 3 The present invention provides a terminal device, which includes a processor and a memory, wherein the memory is used to store a computer program, the computer program includes program instructions, and the processor is used to execute the program instructions stored in the computer storage medium. The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. It is the computing core and control core of the terminal, which is suitable for implementing one or more instructions, and is specifically suitable for loading and executing one or more instructions to implement corresponding method processes or corresponding functions; the processor described in the embodiment of the present invention can be used for the operation of the charging pile module fan control method, including the following steps: obtaining a given load of the charging pile; determining a set temperature input value of the charging pile and a current module fan speed output value according to the given load of the charging pile; the main regulator controls the set speed of the module fan according to the difference between the actual temperature output value of the current charging pile and the set temperature input value; the auxiliary regulator adjusts the module fan speed through an electronic controller according to the difference between the current module fan speed output value and the set speed of the module fan.

[0062] Example 4 The present invention also provides a storage medium, specifically a computer-readable storage medium (Memory), which is a memory device in a terminal device for storing programs and data. It is understandable that the computer-readable storage medium here can include both the built-in storage medium in the terminal device and the extended storage medium supported by the terminal device. The computer-readable storage medium provides a storage space, which stores the operating system of the terminal. In addition, one or more instructions suitable for being loaded and executed by the processor are also stored in the storage space, and these instructions can be one or more computer programs (including program codes). It should be noted that the computer-readable storage medium here can be a high-speed RAM memory or a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0063] One or more instructions stored in a computer-readable storage medium can be loaded and executed by a processor to implement the corresponding steps of the charging pile module fan control method in the above embodiment; one or more instructions in the computer-readable storage medium are loaded by the processor and execute the following steps: obtaining a given load of the charging pile; determining a set temperature input value of the charging pile and a current module fan speed output value according to the given load of the charging pile; the main regulator controls the set speed of the module fan according to the difference between the actual temperature output value detected in the current charging pile and the set temperature input value; the sub-regulator adjusts the module fan speed through an electronic controller according to the difference between the current module fan speed output value and the set speed of the module fan.

[0064] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0065] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0066] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0067] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A charging pile module fan control method, characterized in that: include: Get the given load of the charging pile; Determine the charging pile set temperature input value and the current module fan speed output value according to the given load of the charging pile; The main regulator controls the set speed of the module fan according to the difference between the actual temperature output value of the charging pile and the set temperature input value; The auxiliary regulator adjusts the module fan speed through the electronic controller according to the difference between the current module fan speed output value and the module fan set speed; The fan speed of the regulating module is converted into a regulating temperature through a temperature-speed transfer function to act on the main regulator.

2. The charging pile module fan control method according to claim 1, characterized in that: The output of the secondary regulator is: in, To output the predicted value of the fan speed of the current module through the electronic controller, is the current module fan speed output value, is the rate of change of the deviation between the set speed value of the module fan at the current moment and the actual detection module fan speed value, The difference between the current module fan speed output value and the module fan set speed. is the proportional constant of the sub-regulator, is the integral constant of the sub-regulator, is the differential constant of the sub-regulator.

3. The charging pile module fan control method according to claim 2 is characterized in that: The current module fan speed output value for: The rate of change of the deviation between the set speed value of the module fan at the current moment and the actual detection module fan speed value for: The difference between the current module fan speed output value and the module fan set speed for: in, For the current moment, For a moment in the past, For the past two moments, Enter the setpoint for the module fan speed, It is the actual detection value of the module fan speed.

4. The charging pile module fan control method according to claim 1, characterized in that: The output of the main regulator is: in, The predicted value of the temperature output in the charging pile after the main regulator acts on the temperature-speed transfer function G1(S), It is the deviation between the set temperature value generated by the function generator after the given load of the charging pile and the actual temperature value detected in the charging pile. It is the rate of change of the deviation between the temperature set value generated by the function generator after the given load of the charging pile at the current moment and the actual temperature value detected in the charging pile. It is the change value of the deviation change rate between the temperature setting value generated by the function generator after the given load of the charging pile at the current moment and the actual temperature value detected in the charging pile. is the proportional constant of the main regulator, is the integral constant of the main regulator, is the differential constant of the main regulator.

5. The charging pile module fan control method according to claim 4 is characterized in that: The function generator is a negative increasing function: in, The current charging current of the charging pile, the value range is 0-250, It is the actual temperature output value of the current charging pile, ranging from 25-50.

6. The charging pile module fan control method according to claim 4, characterized in that: The deviation between the set temperature value generated by the function generator after the given load of the charging pile and the actual temperature value detected in the charging pile for: The rate of change of the deviation between the temperature setting value generated by the function generator after the given load of the charging pile at the current moment and the actual temperature value detected in the charging pile for: The value of the change rate of the deviation between the temperature setting value generated by the function generator after the given load of the charging pile at the current moment and the actual temperature value detected in the charging pile for: in, For the current moment, For a moment in the past, For the past two moments, It is the set temperature value generated by the function generator after the given load of the charging pile is passed through. It is the actual detected value of the temperature inside the charging pile.

7. The charging pile module fan control method according to claim 1, characterized in that: The charging pile can keep the temperature within -20℃ during operation by fine-tuning the electronic controller. 50℃.

8. A charging pile module fan control system, characterized in that: include: An acquisition module is used to obtain a given load of a charging pile; A confirmation module, used to determine a charging pile set temperature input value and a current module fan speed output value according to a given load of the charging pile; The control module is used for the main regulator to control the set speed of the module fan according to the difference between the actual temperature output value of the charging pile and the set temperature input value; The regulating module is used for the auxiliary regulator to regulate the module fan speed through the electronic controller according to the difference between the current module fan speed output value and the set speed of the module fan.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the charging pile module fan control method as described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by the processor, the steps of the charging pile module fan control method as described in any one of claims 1 to 7 are implemented.

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