Charging pile heat dissipation control method, charging pile, storage medium and program product

Abstract

The invention provides a charging pile heat dissipation control method, a charging pile, a storage medium and a program product, and relates to the technical field of charging piles.The method comprises the steps that after a charging load is started, a shutter baffle in the charging pile is adjusted to be opened to the initial opening degree; acquiring a first temperature of the charging pile through a system temperature sensor arranged in the charging pile; acquiring a second temperature of the power module through a module temperature sensor arranged at the power module in the charging pile; under the condition that the first temperature is smaller than a preset temperature threshold value, based on the deviation between the first temperature and the preset temperature threshold value, the target opening degree is determined, the shutter baffle is adjusted to the target opening degree from the initial opening degree, and the rotating speed of a module fan is adjusted based on the second temperature; and under the condition that the first temperature is greater than a preset temperature threshold value, starting a system fan of the charging pile, and controlling a module fan and the system fan by adopting a cascade proportional-integral-derivative (PID) control strategy. The method is used for optimizing the heat dissipation effect and improving the intelligent level of the charging pile.

Description

Technical Field

[0001] This application relates to the field of power electronics technology, specifically to the field of charging pile technology, and particularly to a charging pile heat dissipation control method, a charging pile, a storage medium, and a program product. Background Technology

[0002] With the development of the charging pile industry, intelligence is receiving increasing attention within the industry, and intelligent charging piles have become an important development direction for charging piles in the future.

[0003] Therefore, improving the intelligence level of charging piles has become our need. Summary of the Invention

[0004] This application provides a method for controlling the heat dissipation of a charging pile, a charging pile, a storage medium, and a program product, aiming to improve the intelligence level of the charging pile.

[0005] In a first aspect, this application provides a method for controlling the heat dissipation of a charging pile. The method includes: in response to the start of a charging load, adjusting the louvered baffle in the charging pile to an initial opening degree; acquiring a first temperature of the charging pile using a system temperature sensor installed in the charging pile; acquiring a second temperature of the power module using a module temperature sensor installed at the power module in the charging pile; if the first temperature is less than a preset temperature threshold, determining a target opening degree based on the deviation between the first temperature and the preset temperature threshold, and adjusting the louvered baffle from the initial opening degree to the target opening degree; adjusting the rotational speed of the module fan based on the second temperature; the module fan is used to dissipate heat from the power module; if the first temperature is greater than the preset temperature threshold, activating the system fan of the charging pile, and controlling the module fan and the system fan using a cascade proportional-integral-derivative (PID) control strategy; the cascade PID control strategy includes: adjusting the rotational speed of the module fan using the second temperature as the input to the inner loop module fan controller; adjusting the rotational speed of the system fan using the first temperature as the input to the outer loop system fan controller; the system fan is used to dissipate heat from the charging pile.

[0006] It should be understood that currently, the main heat-generating components inside charging piles are power modules, while the heat dissipation components are module fans, system fans, and louvered baffle openings. Each component's heat dissipation control is an independent control and power supply system. For example, the module fan speed is adjusted based on the temperature sensor inside the module; the system fan speed is adjusted based on the temperature sensor inside the pile; and the louvered baffle opening is adjusted based on the temperature sensor to increase or decrease the flow of heat dissipation within the pile. The independent operation of each heat dissipation component without system communication affects the overall heat dissipation effect, and the level of intelligence in the charging pile's heat dissipation process is also low.

[0007] The charging pile heat dissipation control method provided in this application can adjust the louvered baffles in the charging pile to the initial opening degree after the charging load starts; when the first temperature is less than a preset temperature threshold, the target opening degree is determined based on the deviation between the first temperature and the preset temperature threshold, and the louvered baffles are adjusted from the initial opening degree to the target opening degree, while the rotation speed of the module fan is adjusted based on the second temperature; when the first temperature is greater than the preset temperature threshold, the system fan of the charging pile is activated, and a cascade proportional-integral-derivative PID control strategy is used to control the module fan and the system fan. This constructs a hierarchical collaborative logic of louvered baffles + module fan starting first and system fan starting later, as well as a cascaded PID linkage mechanism of module fan + system fan under over-threshold conditions. By coupling the first temperature of the whole unit and the second temperature of the module, the three types of heat dissipation devices no longer operate in isolation, but form an orderly collaborative system of ventilation regulation, local heat dissipation, and global heat dissipation. This solves the problems of wasted heat dissipation resources and uneven heating and cooling caused by independent control, realizes the automation and precision of heat dissipation control, and improves the intelligence level of charging pile heat dissipation.

[0008] Optionally, determining the target opening degree and adjusting the louver from the initial opening degree to the target opening degree based on the deviation between the first temperature and the preset temperature threshold includes: multiplying the deviation between the first temperature and the preset temperature threshold by the current load correction coefficient, inputting the product into the louver controller to obtain the target opening degree output by the louver controller; determining the opening adjustment amount based on the deviation between the target opening degree and the initial opening degree; determining the initial louver drive signal based on the opening adjustment amount and a pre-stored drive signal fitting function; the drive signal fitting function is used to represent the correspondence between the opening adjustment amount and the louver drive signal, and the louver drive signal is used to drive and adjust the opening degree of the louver; if the opening adjustment amount is less than the first opening threshold, superimposing a preset amplitude compensation amount on the initial louver drive signal to obtain the target drive louver signal; or, if the opening adjustment amount is greater than the second opening threshold, determining the initial louver drive signal as the target louver drive signal; the second opening threshold is greater than the first opening threshold; and controlling the louver to adjust from the initial opening degree to the target opening degree through the target louver drive signal.

[0009] Optionally, the method further includes: restoring the louvered baffle from the target opening to the initial opening when the first temperature recovers to below a preset temperature threshold, and stopping the operation of the system fan based on the rotational speed of the fan in the second temperature adjustment module.

[0010] Optionally, if the first temperature is less than a preset temperature threshold, the method further includes: determining a target opening degree based on the deviation between the first temperature and the preset temperature threshold, and adjusting the louvered damper from the initial opening degree to the target opening degree before determining the fan speed of the second temperature regulation module; obtaining the current charging load; determining a preset temperature threshold based on the current charging load; and the preset temperature threshold being positively correlated with the current charging load.

[0011] Optionally, after determining the preset temperature threshold based on the current charging load, the method further includes: obtaining the charging load change rate; determining the temperature change value based on the charging load change rate, and subtracting the temperature change value from the preset temperature threshold; the temperature change value is positively correlated with the charging load change rate.

[0012] Optionally, the method further includes: switching the control mode of the louvered baffle to a manual control mode in response to the charging pile meeting preset conditions.

[0013] Optionally, the preset conditions include at least one of the following: system temperature sensor and / or module temperature sensor failure; module fan and / or system fan failure; charging input command signal failure; louvered air outlet blockage.

[0014] Secondly, this application provides a charging pile heat dissipation control device, which includes a processing module and an acquisition module. The processing module is used to adjust the louvered baffle in the charging pile to an initial opening degree in response to the start of the charging load. The acquisition module is used to acquire a first temperature of the charging pile through a system temperature sensor installed in the charging pile; and to acquire a second temperature of the power module through a module temperature sensor installed at the power module in the charging pile. The processing module is further used to, when the first temperature is less than a preset temperature threshold, determine a target opening degree based on the deviation between the first temperature and the preset temperature threshold and adjust the louvered baffle from the initial opening degree to the target opening degree, and adjust the rotation speed of the module fan based on the second temperature; the module fan is used to dissipate heat from the power module; when the first temperature is greater than the preset temperature threshold, activate the system fan of the charging pile, and control the module fan and the system fan using a cascade proportional-integral-derivative (PID) control strategy; the cascade PID control strategy includes: adjusting the rotation speed of the module fan with the second temperature as the input to the inner loop module fan controller; adjusting the rotation speed of the system fan with the first temperature as the input to the outer loop system fan controller; the system fan is used to dissipate heat from the charging pile.

[0015] Optionally, the processing module is specifically used to input the product of the deviation between the first temperature and the preset temperature threshold and the current load correction coefficient into the baffle controller to obtain the target opening degree output by the baffle controller; determine the opening adjustment amount based on the deviation between the target opening degree and the initial opening degree; determine the initial baffle drive signal based on the opening adjustment amount and the pre-stored drive signal fitting function; the drive signal fitting function is used to represent the correspondence between the opening adjustment amount and the baffle drive signal, and the baffle drive signal is used to drive and adjust the opening degree of the louver baffle; if the opening adjustment amount is less than the first opening threshold, a preset amplitude compensation amount is superimposed on the initial baffle drive signal to obtain the target drive baffle signal; or, if the opening adjustment amount is greater than the second opening threshold, the initial baffle drive signal is determined as the target baffle drive signal; the louver baffle is controlled to adjust from the initial opening degree to the target opening degree through the target baffle drive signal; the second opening threshold is greater than the first opening threshold.

[0016] Optionally, the processing module is also configured to restore the louvered baffle from the target opening to the initial opening when the first temperature recovers to below the preset temperature threshold, and adjust the speed of the fan in the second temperature adjustment module, and stop the operation of the system fan.

[0017] Optionally, the processing module is further configured to, when the first temperature is less than a preset temperature threshold, determine a target opening based on the deviation between the first temperature and the preset temperature threshold and adjust the louvered baffle from the initial opening to the target opening; obtain the current charging load before the fan speed of the second temperature adjustment module; and determine the preset temperature threshold based on the current charging load; the preset temperature threshold is positively correlated with the current charging load.

[0018] Optionally, the processing module is further configured to, after determining a preset temperature threshold based on the current charging load, obtain the charging load change rate; determine the temperature change value based on the charging load change rate, and subtract the temperature change value from the preset temperature threshold; the temperature change value is positively correlated with the charging load change rate.

[0019] Optionally, the processing module is also configured to switch the control mode of the louvered baffle to manual control mode in response to the charging pile meeting preset conditions.

[0020] Optionally, the preset conditions include at least one of the following: system temperature sensor and / or module temperature sensor failure; module fan and / or system fan failure; charging input command signal failure; louvered air outlet blockage.

[0021] Thirdly, this application provides a charging pile, including: a processor and a memory; the memory stores instructions executable by the processor; when the processor is configured to execute the aforementioned instructions, the charging pile implements the method described in the first aspect above.

[0022] Fourthly, this application provides a readable storage medium, comprising: software instructions; when the software instructions are executed in the charging pile, they cause the charging pile to implement the method described in the third aspect above.

[0023] Fifthly, this application provides a computer program product including computer instructions that, when executed on an electronic device, cause the electronic device to perform the method provided in the third aspect above.

[0024] The beneficial effects of aspects two through five above can be referred to in aspect one, and will not be repeated here. Attached Figure Description

[0025] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of the present invention and do not constitute a limitation on the technical solutions of the present invention.

[0026] Figure 1 A flowchart illustrating the heat dissipation control method for charging piles provided in an embodiment of this application; Figure 2 Another flowchart illustrating the heat dissipation control method for charging piles provided in this application embodiment; Figure 3 This is a schematic diagram of the cascaded PID control strategy provided in the embodiments of this application; Figure 4 This is a schematic diagram of the control system response under 50% charging load provided in an embodiment of this application; Figure 5 This is a schematic diagram of the control system response under 60% charging load provided in an embodiment of this application; Figure 6 This is a schematic diagram of the control system response under 70% charging load provided in an embodiment of this application; Figure 7 This is a schematic diagram of the control system response under 80% charging load provided in an embodiment of this application; Figure 8 This is a schematic diagram of the composition of the charging pile heat dissipation control device provided in the embodiments of this application; Figure 9 This is a schematic diagram of the composition of a charging pile provided in an embodiment of this application. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and other forms such as the third-person singular "comprises" and the present participle "comprising" are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this application. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0029] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0030] In the embodiments of this application, the words "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Specifically, the use of the words "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0031] In addition, the use of “based on” implies openness and inclusivity, because processes, steps, calculations or other actions “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0032] With the development of the charging pile industry, intelligence is receiving increasing attention within the industry, and intelligent charging piles have become an important development direction for charging piles in the future.

[0033] Therefore, improving the intelligence level of charging piles has become our need.

[0034] Based on this, embodiments of this application provide a charging pile heat dissipation control method, a charging pile, a storage medium, and a program product, which can improve the intelligence level of the charging pile.

[0035] The entity executing the charging pile heat dissipation control method provided in this application is a charging pile heat dissipation control device, which can be a charging pile; or, the charging pile heat dissipation control device can be a controller (e.g., a microcontroller unit (MCU)) in the charging pile; or, the control device can be a functional module in the charging pile used to execute the control method, etc. This application does not impose any limitations on these aspects.

[0036] For simplicity, the following description will use the heat dissipation control device of the charging pile as an example.

[0037] Figure 1 This is a flowchart illustrating the heat dissipation control method for charging piles provided in an embodiment of this application. Figure 1 As shown, the method includes the following steps: S101. In response to the start of the charging load, adjust the louvered baffle in the charging pile to open to the initial opening degree.

[0038] As an example, movable louvered baffles can be used to control the heat flowing through the air outlet, thereby regulating the temperature inside the pile. This adjustment method is convenient to operate, sensitive to action, and highly practical. However, because the relationship between the louvered baffle opening and the temperature fluctuation inside the pile becomes non-linear, it can sometimes result in insufficient temperature adjustment range and long adjustment time. Physically, to overcome this relationship, the upper, middle, and lower louvered baffles are adjusted in a coordinated manner, that is, closing one baffle while opening another changes the magnitude of heat distribution. In this embodiment, for ease of control, the opening of the upper, middle, and lower louvered baffles is uniformly controlled. A function generator is set in the system to control the louvered baffles to overcome the non-linearity problem and achieve rapid adjustment.

[0039] S102. Obtain the first temperature of the charging pile through the system temperature sensor installed in the charging pile.

[0040] As an example, the system temperature sensor can be a contact temperature sensor (such as a thermocouple, resistance temperature detector, thermistor, or integrated temperature sensor) or a non-contact temperature sensor (such as an infrared temperature sensor or fiber optic temperature sensor). This application embodiment does not limit the specific type of system temperature sensor.

[0041] S103. Obtain the second temperature of the power module by means of the module temperature sensor installed at the power module in the charging pile.

[0042] The specific types of module temperature sensors can be found in the section on system temperature sensors above, and will not be repeated here.

[0043] S104. When the first temperature is less than the preset temperature threshold, the target opening is determined based on the deviation between the first temperature and the preset temperature threshold, and the louver baffle is adjusted from the initial opening to the target opening based on the fan speed of the second temperature adjustment module.

[0044] The modular fan is used to dissipate heat from the power module. A preset temperature threshold can be preset in the charging pile's heat dissipation control device. For example, the preset temperature threshold can be set to 40℃, 50℃, 60℃, or 70℃, etc. This application embodiment does not limit the specific value of the preset temperature threshold.

[0045] In one possible implementation, Figure 2 This is another schematic flowchart illustrating the heat dissipation control method for charging piles provided in an embodiment of this application. Figure 2 As shown, the step in S104 above, which determines the target opening based on the deviation between the first temperature and the preset temperature threshold and adjusts the louver from the initial opening to the target opening, may specifically include the following steps: S1041. The product of the deviation between the first temperature and the preset temperature threshold and the current load correction coefficient is input into the baffle controller to obtain the target opening degree output by the baffle controller.

[0046] As an example, the charging pile heat dissipation controller can determine the current load correction factor based on the correspondence between the current charging load and the preset correction factor.

[0047] The correspondence of correction coefficients can be used to represent the correspondence between charging load and load correction coefficients.

[0048] For example, in the correspondence of correction coefficients, there can be a positive correlation between charging load and load correction coefficient.

[0049] For example, if the charging load is 20%, the corresponding load correction factor can be set to 0.3; if the charging load is 50%, the corresponding load correction factor can be set to 0.8; and if the charging load is 90%, the corresponding load correction factor can be set to 1.5.

[0050] S1042. Determine the opening adjustment amount based on the deviation between the target opening and the initial opening.

[0051] As an example, the charging pile heat dissipation control device can determine the absolute value of the difference between the target opening degree and the initial opening degree as the opening degree adjustment amount.

[0052] S1043. Determine the initial baffle drive signal based on the opening adjustment amount and the pre-stored drive signal fitting function.

[0053] Among them, the drive signal fitting function is used to represent the correspondence between the opening adjustment amount and the baffle drive signal, and the baffle drive signal is used to drive and adjust the opening of the louver baffle.

[0054] S1044. When the opening adjustment amount is less than the first opening threshold, the initial baffle drive signal is superimposed with a preset amplitude compensation amount to obtain the target drive baffle signal.

[0055] The first opening threshold can be preset in the charging pile heat dissipation control device. For example, the first opening threshold can be set to 5%, 10%, or 15%, etc. The specific value of the first opening threshold is not limited in the embodiments of this application.

[0056] S1045. When the opening adjustment amount is greater than the second opening threshold, the initial baffle drive signal is determined as the target baffle drive signal.

[0057] The second opening threshold is greater than the first opening threshold. The second opening threshold can be preset in the charging pile heat dissipation control device. For example, the second opening threshold can be set to 30%, 40%, or 50%, etc. This application embodiment does not limit the specific value of the second opening threshold.

[0058] It should be noted that the charging pile heat dissipation control device can choose to execute one of the above S1044 and S1045 according to the relationship between the opening adjustment amount and the first opening threshold and the second opening threshold.

[0059] S1046. The louvered baffle is adjusted from the initial opening to the target opening by the target baffle drive signal.

[0060] In some possible embodiments, prior to S104 above, the charging pile heat dissipation control device may also acquire the current charging load and determine a preset temperature threshold based on the current charging load.

[0061] The preset temperature threshold is positively correlated with the current charging load.

[0062] As an example, the heat dissipation control device of the charging pile can have a preset correspondence between the charging load and the preset temperature threshold. The heat dissipation control device of the charging pile can query the preset temperature threshold corresponding to the current charging load from the aforementioned correspondence based on the current charging load.

[0063] For example, the correspondence between charging load and preset temperature threshold can be shown in Table 1 below: Table 1 As shown in Table 1, this table may include a charging load item and a preset temperature threshold item. The charging load item includes load 1, load 2, and load 3. The preset temperature threshold item may include preset temperature threshold 1, preset temperature threshold 2, and preset temperature threshold 3. There is a correspondence between load 1 and preset temperature threshold 1, a correspondence between load 2 and preset temperature threshold 2, and a correspondence between load 3 and preset temperature threshold 3.

[0064] For example, when the charging load is a low load of 20%, the power module generates little heat, and the temperature inside the charging pile rises slowly. The corresponding preset temperature threshold can be set to 38℃. Only a small adjustment of the louvered baffle and the low-speed operation of the module fan are needed to keep the temperature below the threshold. When the charging load rises to a medium load of 50%, the power module generates more heat, and the temperature inside the charging pile rises faster. The corresponding preset temperature threshold needs to be raised to 42℃. At this time, the opening of the louvered baffle increases and the speed of the module fan increases, which can meet the heat dissipation requirements without starting the system fan. When the charging load reaches an ultra-high load of 90%, the power module is in a state of high-intensity heat generation. In order to give full play to the front-end heat dissipation effect of the louvered baffle and the module fan and reduce the frequency of system fan start-up, the preset temperature threshold will be further raised to 45℃. Only when the temperature inside the pile exceeds this threshold will the system fan be started to enter the cascade PID collaborative heat dissipation mode.

[0065] In some possible embodiments, after determining the preset temperature threshold based on the current charging load, the charging pile heat dissipation control device can also obtain the charging load change rate; determine the temperature change value based on the charging load change rate, and subtract the temperature change value from the preset temperature threshold.

[0066] Among them, the temperature change value is positively correlated with the charging load change rate.

[0067] For example, taking a preset temperature threshold of 45℃ as an example, in a fast charging scenario, the charging load surges from 30% to 80% within 10 seconds. At this time, the rate of change of the charging load is at a relatively high level, and the corresponding temperature change value is 3℃. The adjusted actual temperature control threshold is 45℃-3℃=42℃, which can trigger the heat dissipation action earlier and avoid the power module from experiencing a sharp temperature rise due to a sudden increase in load. In a slow charging scenario, the charging load takes 5 minutes to increase from 30% to 50%, and the rate of change of the charging load is relatively low, with a corresponding temperature change value of 1℃. The adjusted actual temperature control threshold is 45℃-1℃=44℃, which will not cause energy waste due to premature activation of high-power heat dissipation equipment.

[0068] S105. When the first temperature is greater than the preset temperature threshold, the system fan of the charging pile is activated, and the module fan and the system fan are controlled by a cascade proportional-integral-differential (PID) control strategy.

[0069] The cascaded PID control strategy includes: adjusting the speed of the module fan by using the second temperature as the input to the inner loop module fan controller; and adjusting the speed of the system fan by using the first temperature as the input to the outer loop system fan controller. The system fan is used to dissipate heat from the charging pile.

[0070] For example, Figure 3 This is a schematic diagram of the cascaded PID control strategy provided in an embodiment of this application. Figure 3 As shown, the preset temperature threshold Ts can be first input into the temperature deviation calculation unit ( Figure 3 (Using a circle as an example), this provides a target reference for louver baffle adjustment. The temperature deviation calculation unit can input the temperature deviation Ts-T (current temperature) into PID1. PID1 can perform Process 1 based on the temperature deviation to control the opening of the louver baffle, and then input the heat dissipation effect (temperature change) of the louver baffle into the overall effect superposition unit. In addition, the bias signal can be transmitted to the reference signal superposition unit of the module fan to avoid adjustment lag. Then, the superimposed bias signal can be input into the temperature deviation calculation unit to generate the module temperature deviation as the adjustment basis of the module fan. The superimposed bias module temperature deviation is input into PID2, which drives the coarse adjustment logic of the module fan through Process 2. The coarse adjustment signal of the module fan is input into the cascade signal superposition unit between PID2 and PID3. The cascade signal superposition unit can input the superimposed signal into PID3 to generate the fine control signal of the system fan. Through Process 3, the system fan speed is adjusted to perform fine adjustment of global heat dissipation. The heat dissipation effect of the module fan + system fan is input into the overall effect superposition unit. The overall effect superposition unit integrates all adjustment effects and outputs the current temperature T.

[0071] For example, the parameters of PID1 used to control the louvered baffle can be set as follows: kp1=4.73, ki1=0.00895, kd1=384; the parameters of PID2 used to control the module fan can be set as follows: kp1=3.00, ki1=0.007, kd1=230; and the parameters of PID3 used to control the system fan can be set as follows: kp1=1.85, ki1=0.0051, kd1=120.

[0072] For example, Figure 4 This is a schematic diagram of the control system response under 50% charging load provided in an embodiment of this application. Figure 5This is a schematic diagram of the control system response under 60% charging load provided in an embodiment of this application. Figure 6 This is a schematic diagram of the control system response under 70% charging load provided in an embodiment of this application. Figure 7 This is a schematic diagram of the control system response under 80% charging load, provided in an embodiment of this application. Figures 4 to 7 The horizontal axis represents time, in milliseconds. Figures 4 to 7 (Taking t / ms as an example), the vertical axis represents the temperature change ratio within the village. Figures 4 to 7 As can be seen, when the charging pile is actually running, the heat dissipation control method provided in this application embodiment can make the temperature basically stable within a maximum of 1000ms.

[0073] In some possible embodiments, when the first temperature recovers to below a preset temperature threshold, the charging pile heat dissipation control device can also restore the louvered baffle from the target opening to the initial opening, and stop the operation of the system fan based on the rotation speed of the second temperature adjustment module fan.

[0074] For example, based on the understanding of the above embodiments, the heat dissipation control method for charging piles provided in this application may include the following steps: Step 1: Low-load start-up phase. The charging load is 20%, the module temperature is 25℃, and the pile internal temperature is 28℃. After charging starts, the louvered baffle immediately enters the adjustment state, and the opening is slightly adjusted from the initial 30% to 35% to stabilize the pile internal temperature by changing the heat emission ratio. The module fan maintains a low speed of 800r / min with the module temperature to provide heat dissipation for the foundation. The pile internal temperature is far below the over-temperature limit (45℃), and the system fan remains in the off state.

[0075] Step 2, during the medium load heating stage, the charging load increases to 50%, the module temperature rises to 38℃, and the pile internal temperature rises to 35℃. In response to the temperature rise, the louvered damper opening is adjusted from 35% to 50% to increase heat exhaust and suppress further temperature increases. The module temperature triggers coarse adjustment of the cascaded PID inner loop, increasing the module fan speed from 800r / min to 1200r / min to quickly reduce the local module temperature. As long as the pile internal temperature does not exceed 45℃, the system fan remains off.

[0076] Step 3, High Load and Near-Over-Temperature Stage: The charging load rises to 80%, the module temperature rises to 43℃, and the pile internal temperature rises to 42℃ (close to the over-temperature limit). The louvered damper opening is adjusted to 70% (close to the reasonable adjustment limit) to maintain the current temperature with the maximum heat emission share. The cascade PID inner loop continues to be coarsely adjusted, and the module fan speed is increased from 1200r / min to 1800r / min (close to the maximum coarse adjustment speed). The pile internal temperature does not exceed 45℃, and the system fan remains off.

[0077] Step 4, the ultra-high load and over-temperature linkage stage: the charging load rises to 90%, the module temperature rises to 48℃, and the pile internal temperature rises to 46℃ (exceeding the 45℃ over-temperature limit). The louvered baffles maintain a 70% opening (reaching the adjustment limit) to continue assisting in the exhaust of hot air. The cascaded PID inner loop drives the module fan speed to 2000r / min (full speed) to achieve maximum suppression of local high temperature in the module. The cascaded PID outer loop is triggered to start, switching from the off state to the running state. After superimposing the default system fan speed bias of 1500r / min, it is finely adjusted to 1700r / min to coordinate with the module fan for heat dissipation.

[0078] Step 5: During the load reduction and stabilization phase, the charging load drops to 30%, the module temperature drops to 32℃, the pile temperature drops to 33℃, the response temperature decreases, and the louver opening is reduced from 70% to 40% to reduce heat emission and prevent excessively low temperatures; the cascade PID inner loop adjusts the module fan speed to 900r / min to match the current module heat dissipation requirements; when the pile temperature is below the over-temperature limit, the system fan is triggered to shut down.

[0079] It should be understood that currently, the main heat-generating components inside charging piles are power modules, while the heat dissipation components are module fans, system fans, and louvered baffle openings. Each component's heat dissipation control is an independent control and power supply system. For example, the module fan speed is adjusted based on the temperature sensor inside the module; the system fan speed is adjusted based on the temperature sensor inside the pile; and the louvered baffle opening is adjusted based on the temperature sensor to increase or decrease the flow of heat dissipation within the pile. The independent operation of each heat dissipation component without system communication affects the overall heat dissipation effect, and the level of intelligence in the charging pile's heat dissipation process is also low.

[0080] The charging pile heat dissipation control method provided in this application can adjust the louvered baffle in the charging pile to its initial opening degree after the charging load is started; when the first temperature is less than a preset temperature threshold, a target opening degree is determined based on the deviation between the first temperature and the preset temperature threshold, and the louvered baffle is adjusted from the initial opening degree to the target opening degree; the rotation speed of the module fan is adjusted based on a second temperature; when the first temperature is greater than the preset temperature threshold, the system fan of the charging pile is activated, and a cascade proportional-integral-derivative PID control strategy is used to control the module fan and the system fan. This constructs a hierarchical collaborative logic where the louvered baffle and module fan start first, and the system fan starts later, as well as a cascade PID linkage mechanism between the module fan and the system fan under over-threshold conditions. By coupling the first temperature of the whole unit and the second temperature of the module, the three types of heat dissipation devices no longer operate in isolation, but form an orderly collaborative system of ventilation regulation, local heat dissipation, and global heat dissipation. This solves the problems of wasted heat dissipation resources and uneven heating caused by independent control, realizes the automation and precision of heat dissipation control, and improves the intelligence level of charging pile heat dissipation.

[0081] In some possible embodiments, the charging pile heat dissipation control device may also switch the control mode of the louvered baffle to manual control mode in response to the charging pile meeting preset conditions.

[0082] As an example, the preset conditions may include at least one of the following: system temperature sensor and / or module temperature sensor failure; module fan and / or system fan failure; charging input command signal failure; louvered air outlet blockage.

[0083] For example, a system temperature sensor or module temperature sensor malfunction can be determined when at least one of the following conditions is met: no temperature data is sent within a first preset time period, the temperature data exceeds a preset normal operating temperature range, or the temperature data fluctuation amplitude is greater than a preset amplitude threshold.

[0084] For example, a module fan or system fan can be identified as faulty when at least one of the following conditions is met: the absolute value of the deviation between the actual speed and the commanded speed after the speed command is issued is greater than a preset proportional threshold and lasts for a second preset time; no speed feedback signal is received within a third preset time after the start command is issued; or the fan circuit overload protection switch is activated and the current detection value is zero.

[0085] For example, if the wind pressure value detected by the wind pressure sensor at the louvered baffle outlet is greater than a preset wind pressure threshold and continues for a fourth preset duration, it can be determined that the louvered baffle outlet is blocked.

[0086] The foregoing mainly describes the solutions provided by the embodiments of this application from a methodological perspective. To achieve the above functions, each device, such as a charging pile heat dissipation control device, includes corresponding hardware structures and / or software modules for executing each function. Those skilled in the art should readily recognize that, in conjunction with the algorithm steps of the examples described in the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed in hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Experts may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0087] This application embodiment can divide the overcharging pile heat dissipation control device into functional modules according to the above method embodiment. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one functional module. The integrated module can be implemented in hardware or software. It should be noted that the module division in this application embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. The following description uses the example of dividing each function into a separate functional module.

[0088] In an exemplary embodiment, this application also provides a charging pile heat dissipation control device. Figure 8 This is a schematic diagram illustrating the composition of the charging pile heat dissipation control device provided in an embodiment of this application. Figure 8 As shown, the charging pile heat dissipation control device may include a processing module 801 and an acquisition module 802.

[0089] The processing module 801 is used to adjust the louvered baffle in the charging pile to the initial opening degree in response to the start of the charging load.

[0090] The acquisition module 802 is used to acquire the first temperature of the charging pile through a system temperature sensor installed in the charging pile; and to acquire the second temperature of the power module through a module temperature sensor installed at the power module in the charging pile.

[0091] The processing module 801 is further configured to, when the first temperature is less than a preset temperature threshold, determine a target opening degree based on the deviation between the first temperature and the preset temperature threshold and adjust the louvered baffle from the initial opening degree to the target opening degree, and adjust the rotation speed of the module fan based on the second temperature; the module fan is used to dissipate heat from the power module; when the first temperature is greater than the preset temperature threshold, activate the system fan of the charging pile, and use a cascade proportional-integral-derivative (PID) control strategy to control the module fan and the system fan; the cascade PID control strategy includes: using the second temperature as the input of the inner loop module fan controller to adjust the rotation speed of the module fan; using the first temperature as the input of the outer loop system fan controller to adjust the rotation speed of the system fan; the system fan is used to dissipate heat from the charging pile.

[0092] In some possible embodiments, the processing module 801 is specifically used to input the product of the deviation between the first temperature and the preset temperature threshold and the current load correction coefficient into the baffle controller to obtain the target opening degree output by the baffle controller; determine the opening adjustment amount based on the deviation between the target opening degree and the initial opening degree; determine the initial baffle driving signal based on the opening adjustment amount and the pre-stored drive signal fitting function; the drive signal fitting function is used to represent the correspondence between the opening adjustment amount and the baffle driving signal, and the baffle driving signal is used to drive and adjust the opening degree of the louver baffle; if the opening adjustment amount is less than the first opening threshold, the initial baffle driving signal is superimposed with a preset amplitude compensation amount to obtain the target driving baffle signal; or, if the opening adjustment amount is greater than the second opening threshold, the initial baffle driving signal is determined as the target baffle driving signal; the louver baffle is controlled to adjust from the initial opening degree to the target opening degree through the target baffle driving signal; the second opening threshold is greater than the first opening threshold.

[0093] In some possible embodiments, the processing module 801 is further configured to restore the louvered baffle from the target opening to the initial opening when the first temperature recovers to below a preset temperature threshold, and to adjust the rotation speed of the fan of the second temperature adjustment module and stop the operation of the system fan based on the second temperature adjustment module fan.

[0094] In some possible embodiments, the processing module 801 is further configured to, when the first temperature is less than a preset temperature threshold, determine a target opening degree based on the deviation between the first temperature and the preset temperature threshold and adjust the louvered baffle from the initial opening degree to the target opening degree, and obtain the current charging load before the rotational speed of the fan of the second temperature adjustment module; determine the preset temperature threshold based on the current charging load; the preset temperature threshold is positively correlated with the current charging load.

[0095] In some possible embodiments, the processing module 801 is further configured to obtain the charging load change rate after determining a preset temperature threshold based on the current charging load; determine the temperature change value based on the charging load change rate, and subtract the temperature change value from the preset temperature threshold; the temperature change value is positively correlated with the charging load change rate.

[0096] In some possible embodiments, the processing module 801 is also configured to switch the control mode of the louvered baffle to a manual control mode in response to the charging pile meeting preset conditions.

[0097] In some possible embodiments, the preset conditions include at least one of the following: system temperature sensor and / or module temperature sensor failure; module fan and / or system fan failure; charging input command signal failure; louvered air outlet blockage.

[0098] It should be noted that the above Figure 8 Modules in a module can also be called units; for example, a processing module can be called a processing unit. Additionally, in... Figure 8 In the embodiments shown, the names of the modules may not be the same as those shown in the figure. For example, the acquisition module may also be called the transceiver module or the communication module.

[0099] Figure 8 If the various modules in the process are implemented as software functional modules and sold or used as independent products, they can be stored in a readable storage medium. Based on this understanding, the technical solutions of the embodiments of this application, in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, can be embodied in the form of software products. These software products are stored in a storage medium and include several instructions to cause an electronic device or processor to execute all or part of the steps of the methods of the various embodiments of this application. Storage media for storing computer software products include various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0100] In an exemplary embodiment, this application also provides a charging pile. Figure 9 This is a schematic diagram illustrating the composition of a charging pile provided in an embodiment of this application. Figure 9 As shown, the charging station includes a processor 902, a communication interface 903, and a bus 904. As an example, the charging station may also include a memory 901.

[0101] Processor 902 may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. Processor 902 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. Processor 902 may also be a combination that implements computing functions, such as including one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.

[0102] The communication interface 903 is used to connect to other devices via a communication network. This communication network can be Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0103] The memory 901 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but is not limited thereto.

[0104] As one possible implementation, the memory 901 can exist independently of the processor 902. The memory 901 can be connected to the processor 902 via a bus 904 and is used to store instructions or program code. When the processor 902 calls and executes the instructions or program code stored in the memory 901, it can implement the charging pile heat dissipation control method provided in this application embodiment.

[0105] In another possible implementation, the memory 901 can also be integrated with the processor 902.

[0106] The 904 bus can be an extended industry standard architecture (EISA) bus, etc. The 904 bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 9 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0107] Through the above description of the implementation methods, those skilled in the art can clearly understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the charging pile can be divided into different functional modules to complete all or part of the functions described above.

[0108] In an exemplary embodiment, this application also provides a readable storage medium including software instructions. When the software instructions are executed in the charging pile, they enable the charging pile to implement the methods described in the above embodiments. The readable storage medium can also be an external storage device of the charging pile, such as a plug-in hard drive, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the charging pile. Further, the readable storage medium can include both internal storage units and external storage devices of the charging pile. The readable storage medium is used to store the software instructions and other programs and data required by the charging pile. The readable storage medium can also be used to temporarily store data that has been output or will be output.

[0109] In an exemplary embodiment, this application also provides a computer program product, which includes computer instructions that, when executed on a charging pile, cause the charging pile to perform the method described in the above method embodiment.

[0110] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented using software programs, implementation can be, in whole or in part, in the form of a computer program product. This computer program product includes one or more computer-executable instructions. When these computer-executable instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer-executable instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer-executable instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device containing one or more servers, data centers, etc., that can be integrated with the medium. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape) or an optical medium (e.g., DVD), etc.

[0111] Although this application has been described herein in conjunction with various embodiments, those skilled in the art, by reviewing the accompanying drawings, disclosure, and appended claims, will understand and implement other variations of the disclosed embodiments in carrying out the claimed application. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple instances. A single processor or other unit can implement several functions listed in the claims. While different dependent claims may recite certain measures, this does not mean that these measures cannot be combined to produce good results.

[0112] Although this application has been described in conjunction with specific features and embodiments, it is obvious that various modifications and combinations can be made thereto without departing from the spirit and scope of this application. Accordingly, this specification and drawings are merely exemplary illustrations of this application as defined by the appended claims, and are considered to cover any and all modifications, variations, combinations, or equivalents within the scope of this application. Clearly, those skilled in the art can make various alterations and modifications to this application without departing from the spirit and scope of this application. Thus, if such modifications and modifications of this application fall within the scope of the claims of this application and their equivalents, this application is also intended to include such modifications and modifications.

[0113] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for controlling heat dissipation in a charging pile, characterized in that, The method includes: In response to the start of charging load, adjust the louvered baffle in the charging pile to open to the initial opening degree; The initial temperature of the charging pile is obtained by a system temperature sensor installed in the charging pile. The second temperature of the power module is obtained by a module temperature sensor installed at the power module in the charging pile; When the first temperature is lower than a preset temperature threshold, a target opening is determined based on the deviation between the first temperature and the preset temperature threshold, and the louvered baffle is adjusted from the initial opening to the target opening. The rotational speed of the module fan is adjusted based on the second temperature. The module fan is used to dissipate heat from the power module. When the first temperature is greater than the preset temperature threshold, the system fan of the charging pile is activated, and the module fan and the system fan are controlled by a cascade proportional-integral-derivative (PID) control strategy. The cascade PID control strategy includes: using the second temperature as the input of the inner loop module fan controller to adjust the speed of the module fan; using the first temperature as the input of the outer loop system fan controller to adjust the speed of the system fan; the system fan is used to dissipate heat from the charging pile.

2. The method according to claim 1, characterized in that, Based on the deviation between the first temperature and a preset temperature threshold, determining the target opening and adjusting the louver from the initial opening to the target opening includes: The product of the deviation between the first temperature and the preset temperature threshold and the current load correction coefficient is input into the baffle controller to obtain the target opening degree output by the baffle controller. The opening adjustment amount is determined based on the deviation between the target opening and the initial opening; Based on the opening adjustment amount and the pre-stored drive signal fitting function, the initial baffle drive signal is determined; the drive signal fitting function is used to represent the correspondence between the opening adjustment amount and the baffle drive signal, and the baffle drive signal is used to drive and adjust the opening of the louver baffle. If the opening adjustment amount is less than the first opening threshold, a preset amplitude compensation amount is superimposed on the initial baffle drive signal to obtain the target drive baffle signal; or... If the opening adjustment amount is greater than the second opening threshold, the initial baffle drive signal is determined as the target baffle drive signal; the second opening threshold is greater than the first opening threshold. The target baffle drive signal controls the louver baffle to adjust from the initial opening to the target opening.

3. The method according to claim 1, characterized in that, The method further includes: If the first temperature recovers to a value lower than the preset temperature threshold, the louvered baffle is restored from the target opening to the initial opening, and the operation of the system fan is stopped based on the rotational speed of the fan in the second temperature adjustment module.

4. The method according to claim 1, characterized in that, The method further includes, prior to determining the target opening degree based on the deviation between the first temperature and the preset temperature threshold when the first temperature is lower than the preset temperature threshold, and adjusting the louver baffle from the initial opening degree to the target opening degree, and before determining the fan speed of the second temperature regulation module, the method further includes: Get the current charging load; The preset temperature threshold is determined based on the current charging load; the preset temperature threshold is positively correlated with the current charging load.

5. The method according to claim 2, characterized in that, After determining the preset temperature threshold based on the current charging load, the method further includes: Obtain the charging load change rate; Based on the charging load change rate, the temperature change value is determined, and the preset temperature threshold is subtracted from the temperature change value; the temperature change value is positively correlated with the charging load change rate.

6. The method according to claim 1, characterized in that, The method further includes: In response to the charging pile meeting preset conditions, the control mode of the louvered baffle is switched to manual control mode.

7. The method according to claim 6, characterized in that, The preset conditions include at least one of the following: The system temperature sensor and / or the module temperature sensor is faulty; The module fan and / or the system fan malfunctioned; Charging input command signal malfunction; The louvered baffle's air outlet is blocked.

8. A charging pile, characterized in that, include: Processor and memory; The memory stores instructions that the processor can execute; When the processor is configured to execute the instructions, it causes the charging pile to implement the method as described in any one of claims 1-7.

9. A readable storage medium, characterized in that, include: Software instructions; When the software instructions are run in the charging pile, the charging pile enables the method described in claims 1-7.

10. A computer program product, characterized in that, include: Computer instructions; When the computer instructions are executed in the charging station, the charging station performs the method as described in claims 1-7.

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