Charging pile and control method thereof

Abstract

The application discloses a charging pile and a control method thereof. The method comprises the following steps: acquiring a first temperature of at least one charging device in a first state in the charging pile; the first state is a working state, and the first temperature is an inlet environmental temperature of the charging device in the first state; wherein the charging device is provided with a cooling fan; acquiring a second temperature of at least one charging device in a second state in the charging pile; the second state is a hibernation state, and the second temperature is an inlet environmental temperature of the charging device in the second state; calculating a temperature difference value of the second temperature and the first temperature; determining whether the temperature difference value is greater than a first threshold value; wherein the first threshold value is an upper limit temperature of the temperature difference value; when the temperature difference value is greater than the first threshold value, starting the cooling fan of the charging device in the second state.

Description

Technical Field

[0001] This application belongs to the technical field of charging piles, and particularly relates to a charging pile and its control method. Background Technology

[0002] With the development of electric vehicles, the demand for charging stations, as electrical devices for charging electric vehicles, is also increasing. To achieve fast charging, the charging unit of a charging station generates a significant amount of heat during the charging process. To address this, typical charging stations are equipped with cooling fans and station-level fans on both sides of the charging unit. These fans work together to cool the charging unit. However, the simultaneous operation of the cooling fans and station-level fans generates considerable noise, and the cooling effect is not as expected, impacting the user experience. Furthermore, the cooling fans and station-level fans occupy a considerable amount of space in the charging station, hindering its design and optimization. Summary of the Invention

[0003] This application provides a charging pile and its control method to solve the technical problems of poor heat dissipation, high noise, and poor user experience of conventional charging piles.

[0004] To address the aforementioned technical problems, this application provides a control method for a charging pile, comprising: acquiring a first temperature of at least one charging device in a first state within the charging pile; the first state being an operating state, and the first temperature being the ambient temperature at the air inlet of the charging device in the first state. Each charging device is equipped with a cooling fan. Acquiring a second temperature of at least one charging device in a second state within the charging pile; the second state being a sleep state, and the second temperature being the ambient temperature at the air inlet of the charging device in the second state. Calculating the temperature difference between the second temperature and the first temperature. Determining whether the temperature difference is greater than the first threshold; wherein the first threshold is an upper limit temperature for the temperature difference. When the temperature difference is greater than the first threshold, activating the cooling fan of the charging device in the second state. Through this method, the charging pile can promptly remove heat from each charging device, thereby maintaining the ambient temperature at the air inlet of both the charging devices in the first and second states within a normal range.

[0005] In some embodiments, the method further includes: turning off the cooling fan of the charging device in the second state when the temperature difference is less than or equal to a second threshold. The second threshold is a lower limit temperature of the temperature difference, and the second threshold is less than or equal to the first threshold. Therefore, when the ambient temperature at the air inlet of the charging device in the second state drops to a certain level, it can be determined that the ambient temperature at the air inlet of the charging device in the second state is within the normal range and will not affect the charging operation of the charging pile, thereby turning off its cooling fan.

[0006] In some embodiments, after determining whether the temperature difference is greater than the first threshold, the method further includes: when the temperature difference is less than or equal to the first threshold, not activating the cooling fan of the charging device in the second state. Thus, by comparing the temperature difference with the first threshold, it is determined that the ambient temperature at the air inlet of the charging device in the second state is within a normal range. Accordingly, not activating the cooling fan of the charging device in the second state saves energy and extends the lifespan of the cooling fan.

[0007] In some embodiments, after determining whether the temperature difference is greater than the first threshold, the method further includes: activating the cooling fan of the charging device in the second state when the temperature difference equals the first threshold. Thus, by comparing the temperature difference with the first threshold, the cooling fan of the charging device in the second state can be activated according to heat dissipation needs to prevent unexpected overheating shutdowns.

[0008] In some embodiments, obtaining the first temperature of at least one charging device in a first state in the charging pile includes: obtaining a plurality of first temperatures based on a plurality of charging devices in the first state. The number of the plurality of first temperatures corresponds to the number of charging devices in the first state.

[0009] In some embodiments, calculating the temperature difference between the second temperature and the first temperature includes: obtaining a minimum temperature or an average temperature among the plurality of first temperatures; comparing the second temperature with the minimum temperature among the plurality of first temperatures to obtain the temperature difference; or comparing the second temperature with the average temperature among the plurality of first temperatures to obtain the temperature difference. It should be understood that when there are multiple charging devices in a first state, multiple first temperatures can be obtained. By comparing the minimum temperature among the plurality of first temperatures with the second temperature, the minimum temperature difference between the charging device in the second state and the charging device in the first state is accurately obtained, thereby determining the subsequent required operations. Alternatively, by comparing the average temperature among the plurality of first temperatures with the second temperature, the average temperature difference between the charging device in the second state and the charging device in the first state is obtained, thereby determining the subsequent required operations.

[0010] In some embodiments, when there are multiple second temperatures, the highest temperature among the multiple second temperatures is compared with the lowest temperature among the multiple first temperatures to obtain the temperature difference. Alternatively, the highest temperature among the multiple second temperatures is compared with the average temperature among the multiple first temperatures to obtain the temperature difference. Alternatively, the lowest temperature among the multiple second temperatures is compared with the lowest temperature among the multiple first temperatures to obtain the temperature difference. Alternatively, the lowest temperature among the multiple second temperatures is compared with the average temperature among the multiple first temperatures to obtain the temperature difference. Alternatively, the average temperature among the multiple second temperatures is compared with the lowest temperature among the multiple first temperatures to obtain the temperature difference. Alternatively, the average temperature among the multiple second temperatures is compared with the average temperature among the multiple first temperatures to obtain the temperature difference. Based on this, a heat dissipation strategy can be adaptively configured according to usage requirements to reduce the ambient temperature at the air inlet of the multiple charging devices 32 in the second state.

[0011] In some embodiments, before calculating the temperature difference between the second temperature and the first temperature, the method further includes: determining whether the second temperature exceeds a third threshold; wherein the third threshold is an upper limit temperature of the second temperature. When the second temperature is greater than the third threshold, the cooling fan of the charging device in the second state is directly activated. When the second temperature is less than or equal to the third threshold, the temperature difference between the second temperature and the first temperature is calculated. Thus, if the ambient temperature at the air inlet of the charging device in the second state is too high, the cooling fan of the charging device in the second state is directly activated to improve the heat dissipation efficiency of the charging device in the second state.

[0012] This application also provides a charging pile, which includes a monitor and a charging assembly. The charging assembly includes two or more charging devices, each equipped with a cooling fan and an ambient temperature sensor. Each charging device acquires a first temperature or a second temperature via the ambient temperature sensor. The first temperature is the ambient temperature at the air inlet of the charging device in a first state, and the second temperature is the ambient temperature at the air inlet of the charging device in a second state. The first state is an operating state, and the second state is a sleep state. The monitor receives and analyzes the first temperature and the second temperature, and activates the cooling fan of the charging device in the second state when the temperature difference between the second temperature and the first temperature exceeds a first threshold. The first threshold is the upper limit of the temperature difference. Thus, the charging pile can promptly remove heat from each charging device, keeping the ambient temperature at the air inlet of both the charging device in the first state and the charging device in the second state within a normal range.

[0013] In some embodiments, the monitor is further configured to shut down the cooling fan of the charging device in the second state when the temperature difference is less than or equal to a second threshold. The second threshold is a lower limit temperature of the temperature difference, and the second threshold is less than or equal to the first threshold. Therefore, when the ambient temperature at the air inlet of the charging device in the second state drops to a certain level, it can be determined that the ambient temperature at the air inlet of the charging device in the second state is within the normal range and will not affect the charging operation of the charging pile, thereby shutting down its cooling fan.

[0014] In some embodiments, the monitor is further configured to not activate the cooling fan of the charging device in the second state when the temperature difference is less than or equal to the first threshold. In other embodiments, the monitor is further configured to activate the cooling fan of the charging device in the second state when the temperature difference is equal to the first threshold. Thus, by comparing the temperature difference with the first threshold, it is determined that the ambient temperature at the air inlet of the charging device in the second state is within the normal range. Accordingly, the cooling fan of the charging device in the second state is not activated to save energy and extend the service life of the cooling fan. Alternatively, the cooling fan of the charging device in the second state can be activated according to heat dissipation needs to prevent unexpected overheating shutdowns.

[0015] In some embodiments, based on a plurality of charging devices in a first state, the monitor is configured to receive a plurality of first temperatures and obtain the lowest or average temperature among the plurality of first temperatures. The number of the plurality of first temperatures corresponds to the number of charging devices in the first state. Based on the lowest or average temperature among the plurality of first temperatures, the monitor is further configured to compare a second temperature with the lowest temperature among the plurality of first temperatures to obtain the temperature difference. Alternatively, it can compare the second temperature with the average temperature among the plurality of first temperatures to obtain the temperature difference. It should be understood that when multiple charging devices are obtained in a first state, the minimum temperature difference between the charging devices in the second state and the charging devices in the first state is accurately obtained by comparing the lowest temperature among the plurality of first temperatures with the second temperature, thereby determining the subsequent required operation. Alternatively, the average temperature difference between the charging devices in the second state and the charging devices in the first state is obtained by comparing the average temperature among the plurality of first temperatures with the second temperature, thereby determining the subsequent required operation.

[0016] In some embodiments, when there are multiple second temperatures, the monitor is further configured to obtain the highest temperature, lowest temperature, or average temperature among the multiple second temperatures. The monitor is also configured to compare the highest temperature among the multiple second temperatures with the lowest temperature among the multiple first temperatures to obtain the temperature difference. Alternatively, it can compare the highest temperature among the multiple second temperatures with the average temperature among the multiple first temperatures to obtain the temperature difference. Alternatively, it can compare the lowest temperature among the multiple second temperatures with the lowest temperature among the multiple first temperatures to obtain the temperature difference. Alternatively, it can compare the lowest temperature among the multiple second temperatures with the average temperature among the multiple first temperatures to obtain the temperature difference. Alternatively, it can compare the average temperature among the multiple second temperatures with the lowest temperature among the multiple first temperatures to obtain the temperature difference. Alternatively, it can compare the average temperature among the multiple second temperatures with the average temperature among the multiple first temperatures to obtain the temperature difference. Based on this, a heat dissipation strategy can be adaptively configured according to usage requirements to reduce the ambient temperature at the air inlets of the multiple charging devices 32 in the second state.

[0017] In some embodiments, the monitor is a device configured within the charging assembly, and the charging devices of the charging assembly communicate with each other through the monitor. In other embodiments, the monitor is independent of the charging assembly. Therefore, different monitors can be configured for the charging station according to usage requirements.

[0018] In some embodiments, the monitor is further configured to determine whether the second temperature is greater than a third threshold. When the second temperature is greater than the third threshold, the cooling fan of the charging device in the second state is directly activated; wherein the third threshold is the upper limit temperature of the second temperature. Thus, if the ambient temperature at the air inlet of the charging device in the second state is too high, its cooling fan is directly activated to improve the heat dissipation efficiency of the charging device in the second state.

[0019] This application improves the heat dissipation efficiency of charging piles by controlling the charging piles, preventing the possibility of excessive internal temperature affecting charging efficiency, thereby improving the user experience.

[0020] By controlling the charging device in the second state to start the cooling fan in time for heat dissipation, the pile-level fan required by the normal charging pile can be eliminated, thereby reducing the cost of the charging pile and simplifying the internal structure of the charging pile. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a typical charging station.

[0022] Figure 2 This is a schematic diagram of a charging pile provided in an embodiment of this application.

[0023] Figure 3 This is a schematic diagram of another charging pile provided in an embodiment of this application.

[0024] Figure 4 This is a flowchart of a control method for a charging pile provided in an embodiment of this application.

[0025] Figure 5 This is a flowchart of another control method for a charging pile provided in an embodiment of this application. Detailed Implementation

[0026] Please refer to Figure 1In a standard electric vehicle charging station 1000, the charging device 1100 charges the electric vehicle to support its normal operation. However, to support high-power or fast charging, the charging device 1100 also generates a significant amount of heat during the charging process. If heat is not dissipated in time, the charging station 1000 will overheat, reducing its charging efficiency or even causing it to shut down due to overheating. Insufficient heat dissipation also poses a significant safety hazard. Therefore, a standard charging station 1000 places the charging device 1100 between an air inlet 1000a and an air outlet 1000b. A cooling fan 1200 is installed on the charging device 1100, while a high-power station-level fan 1300 corresponding to the charging device 1100 is installed on the air outlet 1200b. The combined operation of the cooling fan 1200 and the station-level fan 1300 dissipates the heat generated by the charging device 1100 during operation.

[0027] To ensure efficient heat dissipation, high-power charging pile fans 1300 are installed for each charging device 1100 to cool them. Consequently, the charging pile fans 1300 are large, consume a lot of energy, and generate significant noise during operation, resulting in a poor user experience and weakening the competitiveness of these charging piles 1000.

[0028] Furthermore, when only some charging devices 1100 in the normally functioning charging pile 1000 are operating, the operating charging devices 1100 generate hot air carrying a large amount of heat. Due to the suction effect of the operating cooling fan 1200, this hot air easily flows back through the non-operating charging devices 1100 to the air inlet of the operating charging devices 1100, i.e. Figure 1 As shown by the dotted line, the normal operation of the charging pile 1000 will be affected by the abnormally high temperature at the air inlet of the non-operational charging device 1100. The impact on the charging pile 1000 will be even more severe when the pile-level fan 1300 malfunctions and reduces its speed or stops rotating.

[0029] To address the above issues, embodiments of this application provide a charging pile and a control method for the charging pile, which can improve the heat dissipation efficiency of the charging pile and prevent the charging pile from overheating and affecting charging efficiency. Furthermore, the charging pile-level fan required by conventional charging piles can be eliminated, thereby reducing costs and simplifying the internal structure of the charging pile.

[0030] Please also refer to Figure 2 and Figure 3 The embodiments of this application provide charging piles (10a, 10b).

[0031] The charging station (10a, 10b) includes a heat dissipation cavity 12, a monitor 20, and a charging assembly 30. The heat dissipation cavity 12 has a convection air inlet 12a and an air outlet 12b, and is used to house the charging assembly 30. Thus, the relatively independent heat dissipation cavity facilitates heat dissipation of the charging assembly 30, ensuring that the heat dissipation cavity has a relatively suitable operating temperature, thereby enabling fast charging of electric vehicles.

[0032] The charging assembly 30 includes two or more charging devices 32 for charging electric vehicles. To dissipate the heat generated during operation, the charging devices 32 are positioned in the area between the air inlet 12a and the air outlet 12b. Each charging device 32 is also equipped with a cooling fan 34 to blow away the heat generated during operation and discharge it through the air outlet 12b.

[0033] To simplify the analysis and facilitate understanding of the technical solutions of this application, each embodiment uses three of the four charging devices 32 in the first state and one in the second state as an example; the first state is the working state, and the second state is the dormant state. It should be understood that the second state can be considered as a state of temporary inactivity, and correspondingly, each charging device can switch between the first and second states as needed. For example, a charging device 32 may be in the second state at the current moment, but at the next moment, the charging device 32 may switch to the first state in response to a command.

[0034] In some other embodiments, the charging station may also include five charging devices; or, depending on the required power, two of the four charging devices may be in a first state and two may be in a second state, without limitation.

[0035] In each embodiment, the topmost charging device is referred to as the charging device in the second state, and the three charging devices below are referred to as the charging devices in the first state.

[0036] Please refer to Figure 1 In a normal charging pile 1000, when the three charging devices 1100 at the bottom are working normally, the cooling fans 1200 of all three charging devices 1100 will be activated to exhaust the heat generated by the three charging devices 1100 during operation from the air outlet 1000b of the charging pile 1000. However, the normal charging pile 1000 also has four pile-level fans 1300 installed at the air outlet 1000b to assist in heat dissipation. These pile-level fans 1300, together with the cooling fans 1200, carry away the hot air blown towards the rear of the charging devices 1100.

[0037] However, since the charging device 1100 and its related structures in the second state of the charging pile 1000 are not activated, and the cooling fan 1200 of the charging device 11000 in the first state is operating, the temperature and pressure differences cause the charging device 1100 in the second state to form a return flow channel with the charging device 1100 in the first state. As a result, the hot air blown by the cooling fan 1200 to the tail of the corresponding charging device 1100 easily flows back through the charging device 1100 in the second state to the air inlet of the operating charging device 1100, and the circulation is intensified through the return flow channel. Consequently, the ambient temperature at the air inlet of the charging device 1100 rises abnormally, the charging efficiency of the charging pile 1000 for electric vehicles decreases, and it may even cause the charging pile 1000 to shut down abnormally.

[0038] To address the above issues, the charging device 32 in each embodiment is equipped with an ambient temperature sensor 36, which is used to acquire the ambient temperature at the air inlet of the corresponding charging device 32. When the charging device 32 is in a first state and outputting power, the ambient temperature at the air inlet acquired by the ambient temperature sensor 36 is taken as the first temperature. When the charging device 32 is in a second state and not outputting power, the ambient temperature at the air inlet acquired by the ambient temperature sensor 36 is taken as the second temperature.

[0039] In some embodiments, the first or second temperature obtained by the ambient temperature sensor 36 is uploaded to the monitor 20. Please refer to [reference needed]. Figure 2 In a charging pile 10a provided in this embodiment, the monitor 20 is located outside the charging assembly 30, making the monitor 20 independent of the charging assembly. Please refer to... Figure 3 In another charging pile 10b provided in this application embodiment, the monitor 20 can be a device configured in the charging component 30, that is, the monitor 20 is integrated into the charging component 30 as part of the charging component 30, thereby reducing the space occupied by the monitor 20 and the charging component 30, and freeing up more space for heat dissipation or to accommodate other devices.

[0040] Based on this, different monitors 20 can be configured for the charging pile 10 according to usage requirements. In addition, the charging devices 32 of the charging assembly 30 can also communicate with each other through the monitors 20.

[0041] In some embodiments, the ambient temperature sensor 36 in each charging device 32 uploads the acquired first or second temperature to the monitor 20 for analysis. Accordingly, the monitor 20 determines, based on this temperature information, whether the temperature difference between the second and first temperatures is greater than a first threshold, in order to determine whether to control the charging device 32 in the second state to perform relevant heat dissipation operations.

[0042] It should be understood that the first threshold refers to the upper limit of the temperature difference. The first threshold can be a positive number, a negative number, or zero. Appropriate actions will be taken based on the different relationships between the temperature difference and the first threshold.

[0043] Therefore, the value of the first threshold can be adjusted according to requirements. For example, the first threshold can be -3℃, -2℃, -1℃, 0℃, 1℃, 2℃, or 3℃, etc. Accordingly, the charging piles (10a, 10b) provided in each embodiment can be applied in underground garages or open-air parking lots, etc. Depending on the specific application, the first threshold and the second threshold mentioned below can be the same or different, and there is no limitation on this.

[0044] In addition, please refer to the following: Figures 2 to 4 In each embodiment, the monitor 20 is also used to directly start the cooling fan 34 of the charging device 32 in the second state when the acquired second temperature exceeds the third threshold; the third threshold is the upper limit temperature of the second temperature.

[0045] It should be understood that if the ambient temperature at the air inlet of the charging device 32 in the second state remains above the third threshold for a period of time, it will reduce the charging efficiency of the charging pile and shorten its service life. Therefore, when the ambient temperature at the air inlet of the charging device 32 in the second state is found to be too high, the monitor 20 directly activates the cooling fan 34 of the charging device 32 in the second state to improve the heat dissipation efficiency of the charging device 32 in the second state and promptly reduce the ambient temperature at the air inlet of the charging device 32. For example, if the third threshold is 50°C and the second temperature is 51°C, then 50°C < 51°C. If the monitor 20 determines that the ambient temperature at the air inlet of the charging device 32 in the second state exceeds the third threshold, it will activate the cooling fan 34 of the charging device 32 in the second state.

[0046] The following will use charging pile 10a as an example for illustration.

[0047] Please refer to Figure 2 This application provides a charging pile 10a, in which the monitor 20 and the charging component 30 are independent of each other. The charging device 32 acquires a first temperature or a second temperature through a corresponding ambient temperature sensor 36 and uploads it to the monitor 20. Based on the acquired temperature information (i.e., the first temperature and the second temperature), the monitor 20 calculates the temperature difference between the second temperature and the first temperature. Thus, the monitor 20 can determine whether the temperature difference is greater than a first threshold, and when the temperature difference is greater than the first threshold, it activates the cooling fan 34 of the charging device 32 in a second state.

[0048] It should be understood that the monitor 20 in this embodiment monitors each charging device 32 of the charging assembly 30 and controls each charging device 32 to perform related operations. The monitor 20 determines the temperature difference between the charging device 32 in the second state and the charging device 32 in the first state. When the ambient temperature at the air inlet of the charging device 32 in the second state becomes abnormal, causing the temperature difference between the second temperature and the first temperature to exceed a first threshold, the monitor 20 controls the activation of the cooling fan 34 of the charging device 32 in the second state. The cooling fan 34 exhausts hot air from the air outlet 12b of the charging pile 10a, thereby removing the heat accumulated on the charging device 32 in the second state and reducing the ambient temperature at the air inlet of the charging device 32, ensuring the normal operation of the charging pile 10a and the charging of electric vehicles.

[0049] In some other embodiments, the monitor 20 is also used to maintain the charging device 32 in the second state in its original state when the temperature difference is less than a first threshold. It should be understood that if the monitor 20 determines that the ambient temperature at the air inlet of the charging device 32 in the second state is within the normal range after comparing the temperature difference with the first threshold, it is not necessary to start the cooling fan 34 of the charging device 32 in the second state.

[0050] In some embodiments, when there are multiple charging devices 32 in the first state, multiple first temperatures can be obtained. It should be understood that the number of first temperatures is the same as the number of charging devices 32 in the first state; that is, each charging device 32 in the first state corresponds to one first temperature. The monitor 20 receives and analyzes these first temperatures and obtains the lowest temperature among them. Then, a second temperature is compared with the lowest temperature to obtain a temperature difference value.

[0051] For ease of understanding, let T0 be the ambient temperature of the air inlet of the charging device in the second state, T1 be the ambient temperature of the air inlet of the charging device in the first state, T11 be the temperature with the lowest value among the multiple first temperatures T1, and ΔT1 be the first threshold.

[0052] Using the four charging devices 32 mentioned above as an example, since there are three charging devices 32 in the first state, three corresponding T1 values ​​can be obtained. For example, if the ambient air inlet temperatures T1 of the three charging devices 32 in the first state are 47℃, 48℃, and 49℃ respectively, then the lowest temperature T11 obtained by the monitor 20 is 47℃.

[0053] Based on these three T1 values, the monitor 20 compares T0 with the lowest value among the three T1 values, T11, to obtain the temperature difference T0-T11. For example, if the obtained second temperature T0 is 49.5℃, then the temperature difference T0-T11 between the second temperature T0 and the lowest temperature T11 is 2.5℃.

[0054] In some embodiments, when the set first threshold ΔT1 is 1°C, the monitor 20 can determine that (T0-T11) > ΔT1 by comparing the temperature difference T0-T11 with the first threshold ΔT1. Therefore, the monitor 20 determines that the ambient temperature at the air inlet of the charging device 32 in the second state is too high, and activates the corresponding cooling fan 34 to reduce the ambient temperature at the air inlet of the charging device 32 in the second state.

[0055] In some other embodiments, when the first threshold ΔT1 is set to 3°C, the monitor 20 can determine that (T0-T11) < ΔT1 by comparing the temperature difference T0-T11 with the first threshold ΔT1. Therefore, the monitor 20 determines that the ambient temperature at the air inlet of the charging device 32 in the second state is within the normal range, and thus does not activate the cooling fan of the charging device 32 in the second state.

[0056] In some embodiments, the monitor 20 may also compare the second temperature with an average temperature among a plurality of first temperatures. That is, the monitor 20 receives and analyzes the first temperatures and obtains an average temperature among the first temperatures. Then, the second temperature is compared with the average temperature to obtain a temperature difference.

[0057] Let the average temperature of the multiple first temperatures T1 be denoted as T12. Taking the four charging devices 32 mentioned above as an example, the ambient air inlet temperatures T1 of the three charging devices 32 in the first state are 47℃, 48℃, and 49℃, respectively. The average temperature T12 obtained by the monitor 20 after analysis is 48℃. The second temperature T0 obtained by the monitor 20 is 49.5℃. Therefore, the temperature difference T0-T12 between the second temperature T0 and the average temperature T12 is 1.5℃.

[0058] In some embodiments, when the set first threshold ΔT1 is 1°C, the monitor 20 can determine that (T0-T12) > ΔT1 by comparing the temperature difference T0-T12 with the first threshold ΔT1. Therefore, the monitor 20 determines that the ambient temperature at the air inlet of the charging device 32 in the second state is too high, and activates the corresponding cooling fan 34 to reduce the ambient temperature at the air inlet of the charging device 32 in the second state.

[0059] In some other embodiments, when the set first threshold ΔT1 is 3°C, the monitor 20 can determine that (T0-T12) < ΔT1 by comparing the temperature difference T0-T12 with the first threshold ΔT1. Therefore, the monitor 20 determines that the ambient temperature at the air inlet of the charging device 32 in the second state is within the normal range, and therefore does not activate the corresponding cooling fan 34.

[0060] In cases where the temperature difference (T0-T11, T0-T12) is the same as the first threshold △T1, some embodiments activate the cooling fan 34 of the charging device 32 in the second state; while in other embodiments, the cooling fan of the charging device 32 in the second state is not activated. Based on this, a corresponding heat dissipation control strategy can be adaptively configured for the charging pile 10a to meet different usage requirements.

[0061] For example, let's take the temperature difference value T0-T11 as an example. When the set first threshold ΔT1 is 2.5℃, the monitor 20 can determine that (T0-T11) = ΔT1 by comparing the temperature difference value T0-T11 with the first threshold ΔT1. Therefore, the monitor 20 determines that the ambient temperature at the air inlet of the charging device 32 in the second state is within the normal range, and thus, does not activate the cooling fan of the charging device 32 in the second state.

[0062] In some other embodiments, when the set first threshold ΔT1 is 2.5℃, the monitor 20 can determine that (T0-T11) = ΔT1 by comparing the temperature difference T0-T11 with the first threshold ΔT1. Therefore, the monitor 20 determines that the ambient temperature at the air inlet of the charging device 32 in the second state is relatively high and requires cooling to prevent potential overheating shutdown. To this end, the monitor 20 activates the cooling fan 34 of the charging device 32 in the second state.

[0063] In some embodiments, the monitor 20 is also configured to turn off the cooling fan 34 of the charging device 32 in the second state when the temperature difference is less than or equal to the second threshold.

[0064] It should be understood that the second threshold refers to the lower limit temperature of the temperature difference. Let the second threshold be denoted as ΔT2, which is less than or equal to the first threshold ΔT1. Therefore, when the ambient temperature at the air inlet of the charging device 32 in the second state decreases to a certain level, the monitor 20 can determine that the ambient temperature at the air inlet of the charging device 32 in the second state is within the normal range and will not affect the charging operation of the charging pile 10a, thereby turning off the cooling fan 34 of the charging device 32 in the second state.

[0065] For example: △T1=△T2=2.5℃. When the temperature difference is greater than 2.5℃, the monitor 20 starts the cooling fan 34 of the charging device 32 in the second state to remove the heat accumulated on the charging device 32 and reduce the ambient temperature at its air inlet; when the temperature difference is less than 2.5℃, the monitor 20 determines that the ambient temperature at the air inlet of the charging device 32 in the second state is within the normal range, and then turns off the cooling fan 34 of the charging device 32 in the second state.

[0066] For example, if ΔT1 = 3℃ and ΔT2 = 1℃, when the temperature difference is greater than 3℃, the monitor 20 will activate the cooling fan 34 of the charging device 32 in its second state to remove the heat accumulated on the charging device 32 and lower the ambient temperature at its air inlet. When the temperature difference drops to less than 1℃, the monitor 20 determines that the ambient temperature at the air inlet of the charging device 32 in its second state is within the normal range and then shuts off the cooling fan 34.

[0067] In some embodiments, when there are multiple charging devices 32 in the second state, each charging device 32 in the second state has an air inlet ambient temperature; that is, the monitor 20 can obtain multiple second temperatures corresponding to the multiple charging devices 32 in the second state. It should be understood that the multiple second temperatures in this embodiment refer to at least two second temperatures. Accordingly, among the multiple second temperatures, there are second temperatures with relatively higher values ​​and second temperatures with relatively lower values.

[0068] For ease of understanding, let's briefly illustrate this using two charging devices 32 in the charging assembly 30, each in a second state. These two devices can generate two second temperatures. When the values ​​of the two second temperatures are different, one second temperature has a relatively higher value, and the other a relatively lower value. For example, if the two second temperatures are 49°C and 51°C, then the highest temperature is 51°C, the lowest temperature is 49°C, and the average temperature is 50°C. Conversely, when the values ​​of the two second temperatures are the same, that second temperature simultaneously represents the highest, lowest, and average temperature; for example, if both second temperatures are 50°C, then the highest, lowest, and average temperature are all 50°C.

[0069] To address this situation, in the charging pile 10a provided in this application embodiment, the monitor 20 can obtain the highest, lowest, or average temperature among multiple second temperatures, and use the highest, lowest, or average temperature as the overall second temperature of the multiple charging devices 32 in the second state, comparing it with the first temperature to obtain the temperature difference. Therefore, a heat dissipation strategy can be adaptively configured according to usage requirements to reduce the ambient temperature at the air inlet of the multiple charging devices 32 in the second state.

[0070] Based on this, in some embodiments, the monitor 20 can compare the highest temperature among a plurality of second temperatures with the lowest temperature among a plurality of first temperatures to obtain a temperature difference. Alternatively, the monitor 20 can compare the highest temperature among a plurality of second temperatures with the average temperature among a plurality of first temperatures to obtain a temperature difference.

[0071] In other embodiments, the monitor 20 may compare the lowest temperature among a plurality of second temperatures with the lowest temperature among a plurality of first temperatures to obtain a temperature difference. Alternatively, the monitor 20 may compare the lowest temperature among a plurality of second temperatures with the average temperature among a plurality of first temperatures to obtain a temperature difference.

[0072] In other embodiments, monitor 20 compares the average temperature among a plurality of second temperatures with the lowest temperature among a plurality of first temperatures to obtain a temperature difference. Alternatively, monitor 20 may compare the average temperature among a plurality of second temperatures with the average temperature among a plurality of first temperatures to obtain a temperature difference.

[0073] Please refer to Figure 3 In another charging pile 10b provided in this application embodiment, compared with the charging pile 10a in the above embodiments, the monitor 20 is configured in the charging assembly 30. Accordingly, the charging devices 32 of this charging pile 10b can communicate with each other through the monitor 20.

[0074] It should be understood that, Figure 3 In the illustrated charging pile 10b, there is one monitor 20, which is connected to multiple charging devices 32 to receive the ambient temperature at the air inlet of each charging device 32. However, this does not limit the number of monitors 20. In other embodiments, the charging pile may have a number of monitors 20 corresponding to the number of charging devices 32. For example, if there are four charging devices 32, the charging pile will have four monitors 20, each located within one of the four charging devices 32. Accordingly, the four monitors 20 can communicate with each other to share the ambient temperature at the air inlet of each charging device 32. Thus, the four monitors 20 can perform the operations described in the embodiments above based on these ambient temperatures at the air inlets.

[0075] Please also refer to Figure 2 and Figure 3 It should be understood that the charging piles (10a, 10b) provided in each embodiment may also include a device temperature sensor 38 in their charging devices 32, which is used to acquire the internal temperature of the corresponding charging device 32. The monitor 20 can acquire the internal temperature of the charging devices 32 when all of them are working or when none of them are working. Based on the internal temperature and the corresponding first temperature, the monitor 20 controls the cooling fan 34 of the charging devices 32 to operate according to a preset speed regulation mode.

[0076] This preset speed control method refers to the pre-setting of the cooling fan's speed based on the internal temperature and a predetermined temperature. For example, this preset speed control method can be in the form of a curve, table, formula, or logical expression, without restriction. Therefore, when the cooling fan is actually running, its speed is controlled according to this preset speed control method to promptly dissipate the heat generated by the charging device.

[0077] It should be understood that in the charging piles (10a, 10b) of the above embodiments, the monitor 20 can also monitor information such as the output voltage and output power of the charging component 30 to realize functions such as billing or information monitoring.

[0078] In addition, the charging piles (10a, 10b) in each embodiment may also be equipped with some necessary or unnecessary devices.

[0079] In some embodiments, the charging stations (10a, 10b) also include a meter connected to the monitor 20, which is used to convert information about the electrical energy consumed during the charging process into corresponding fee information. Based on this fee information, the supplier or lessor of the charging stations (10a, 10b) can collect the relevant fees from the user.

[0080] In some embodiments, the charging pile (10a, 10b) also includes a pile-level fan, which is located at the air outlet 12b and works in conjunction with the cooling fan 34 for heat dissipation. When the cooling fan 34 malfunctions, the monitor 20 or the charging device 32 corresponding to the first or second state can control and increase the speed of the corresponding pile-level fan to improve the heat dissipation efficiency of the charging device 32.

[0081] In some embodiments, the air inlet 12a and air outlet 12b of the charging piles (10a, 10b) may be equipped with waterproof structures and / or dustproof nets. The waterproof structure reduces the possibility of water mist seeping into the interior of the charging piles (10a, 10b), and the dustproof net reduces the possibility of dust or small debris entering the interior of the charging piles (10a, 10b), thereby ensuring the normal operation of structures such as the charging components 30.

[0082] Please refer to Figure 4 This application also provides a control method for a charging pile, which may include, but is not limited to, the following steps:

[0083] 101: Obtain the first temperature of at least one charging device in a first state in the charging assembly, the first temperature being the ambient temperature of the charging device in the first state relative to the air inlet of the charging pile.

[0084] Corresponding to the charging piles (10a, 10b) in the above embodiments, the charging assembly may include two or more charging devices. Therefore, based on the power required by the electric vehicle, a corresponding number of charging devices in the charging pile can be selectively activated to output the required power. In some embodiments, during the charging process of the electric vehicle, the charging pile contains charging devices in a first state and charging devices in a second state.

[0085] 102: Obtain the second temperature of at least one charging device in the charging assembly that is in the second state, the second temperature being the ambient temperature of the charging device in the second state relative to the air inlet of the charging pile.

[0086] It should be understood that there is no order between steps 101 and 102. Step 101 can be performed first, followed by step 102; or step 102 can be performed first, followed by step 101; or steps 101 and 102 can be performed simultaneously. There are no restrictions on this.

[0087] Based on step 102, an ambient temperature sensor can be installed in each charging device. This sensor can be used to obtain the ambient temperature at the air inlet of the charging device; that is, to obtain a first temperature or a second temperature according to the state of the charging device. In each embodiment, the ambient temperature at the air inlet of the corresponding charging device is obtained through the ambient temperature sensor, enabling the charging pile in each embodiment to monitor the temperature of each charging device in real time or at intervals, thereby reducing the possibility of unexpected phenomena due to high air inlet temperatures at the charging pile.

[0088] 103: Calculate the temperature difference between the second temperature and the first temperature.

[0089] Based on the first and second temperatures obtained above, these temperatures are analyzed. By analyzing the temperature environments of the charging device in the first state and the charging device in the second state, the temperature difference between the charging device in the second state and the charging device in the first state can be determined. Based on this temperature difference, relevant operations are performed to ensure the normal operation of the charging pile.

[0090] 104: Determine whether the temperature difference is greater than the first threshold.

[0091] It should be understood that the first threshold refers to the upper limit of the temperature difference. The first threshold can be a positive number, a negative number, or zero. Appropriate actions will be taken based on the different relationships between the temperature difference and the first threshold.

[0092] Therefore, the value of the first threshold can be adjusted according to needs. For example, the first threshold can be -3℃, -2℃, -1℃, 0℃, 1℃, 2℃, or 3℃, etc.

[0093] 105: When the temperature difference is greater than the first threshold, the cooling fan of the charging device in the second state is activated.

[0094] Based on this step, when the ambient temperature at the air inlet of the charging device in the second state becomes abnormal, causing the temperature difference to exceed the first threshold, the cooling fan of the charging device in the second state is activated. This cooling fan expels hot air from the charging pile's air outlet, thereby removing the heat accumulated on the charging device and lowering the ambient temperature at the air inlet of the charging device in the second state, ensuring the normal operation of the charging pile and the charging of electric vehicles. It should be understood that the speed of the corresponding cooling fan in each charging device can be adaptively adjusted according to demand. For example, each cooling fan can be speed-controlled using PWM, without limitation.

[0095] Charging piles based on this control method can promptly dissipate heat from each charging device, maintaining the ambient temperature at the air inlet of each charging device in either the first or second state within a normal range. In some embodiments, this control method can prevent the charging pile from shutting down due to overheating, thereby improving the user experience. In some embodiments, based on this control method, charging piles may not require a pile-level fan, thus simplifying the structure, reducing costs, and to some extent reducing noise generated during charging, providing a more comfortable charging environment.

[0096] To simplify the analysis and facilitate understanding of the technical solution of this application, each embodiment is illustrated by the example of a charging pile having four charging devices, three of which are in a first state and one in a second state.

[0097] Four charging units are stacked vertically, with the top unit designated as the second state and the three below it as the first state. When the three bottom units are operating normally, their cooling fans activate to expel the heat generated during operation through the charging station's vents. However, in a normal charging station setup, a hot air recirculation channel can easily form between the operating and non-operating units, causing an abnormally high temperature at the charging unit's air inlet and reducing the charging efficiency for electric vehicles.

[0098] Based on this, the control method in each embodiment monitors the ambient temperature at the air inlets of the four charging devices. When the ambient temperature at the air inlet of a charging device in the second state rises abnormally, the cooling fan of that charging device in the second state is activated. In this way, the cooling fan blows away any hot air that might be recirculated through the charging device in the second state, breaking the hot air flow cycle between the charging device in the second state and the charging device in the first state, and reducing the possibility of accidents caused by overheating of the charging device.

[0099] In addition to steps 101 to 105 above, the control method for charging piles provided in this application embodiment may also include the following steps after step 104:

[0100] When the temperature difference is less than the first threshold, the cooling fan of the charging device in the second state will not be activated.

[0101] In this step, by comparing the temperature difference with a first threshold, it is determined that the ambient temperature at the air inlet of the charging device in the second state is within the normal range. Therefore, the cooling fan of the charging device in the second state is not activated to save energy and extend its lifespan. Please refer to [further details needed]. Figure 4 It should be understood that the temperature difference judgment in step 104 is still in progress, and when the temperature difference is greater than the first threshold, step 105 is executed.

[0102] Please refer to Figure 5 To improve the heat dissipation efficiency of the charging device in the second state, this application also provides another control method for charging piles. Compared with the methods in the above embodiments, this method further includes the following steps before step 103:

[0103] 106: Determine whether the second temperature exceeds the third threshold.

[0104] In this step, if the ambient temperature at the air inlet of the charging device in the second state is too high, the cooling fan of the charging device in the second state is directly activated. That is, in this embodiment, a pre-comparison step is performed before step 103 to determine whether the ambient temperature at the air inlet of the charging device in the second state has reached a certain range. If so, the cooling fan of the charging device in the second state is directly activated to reduce the ambient temperature at the air inlet in time; otherwise, the analysis in step 103 is performed. For example, if the third threshold is 50°C and the second temperature of the charging device in the second state is 51°C, it can be determined that the ambient temperature at the air inlet of the charging device in the second state exceeds the third threshold, and the cooling fan of the charging device in the second state is activated.

[0105] This application also provides a method for calculating the temperature difference between a second temperature and a first temperature, including:

[0106] Based on the acquired first temperatures, the lowest temperature among these first temperatures is obtained.

[0107] It should be understood that when there are multiple charging devices in the first state, multiple first temperatures can be obtained. The number of first temperatures is the same as the number of charging devices 32 in the first state; that is, each charging device 32 in the first state corresponds to one first temperature. Based on these first temperatures, the method in this embodiment is to obtain the lowest temperature among these first temperatures and compare it with a second temperature.

[0108] The second temperature is compared with the lowest of a plurality of first temperatures to obtain the temperature difference.

[0109] Similarly, let T0 be the ambient temperature of the air inlet of the charging device in the second state, T1 be the ambient temperature of the air inlet of the charging device in the first state, T11 be the temperature with the lowest value among the multiple first temperatures T1, and ΔT1 be the first threshold.

[0110] Let's take the four charging devices mentioned above as an example. Since there are three charging devices in the first state, we can obtain three corresponding T1 values. For example, if the ambient temperatures T1 at the air inlets of the three charging devices in the first state are 47℃, 48℃, and 49℃ respectively, then the lowest temperature T11 obtained through analysis is 47℃.

[0111] Based on these three T1 values, T0 is compared with the lowest value among the three T1 values, T11, to obtain the temperature difference T0-T11. For example, if the obtained second temperature T0 is 49.5℃, then the temperature difference T0-T11 between the second temperature T0 and the lowest temperature T11 is 2.5℃.

[0112] In some embodiments, when the set first threshold ΔT1 is 1°C, by comparing the temperature difference T0-T11 with the first threshold ΔT1, it can be determined that (T0-T11) > ΔT1. Therefore, it is determined that the ambient temperature at the air inlet of the charging device in the second state is too high, and the corresponding cooling fan is activated to reduce the ambient temperature at the air inlet of the charging device in the second state.

[0113] In some other embodiments, when the first threshold ΔT1 is set to 3°C, it can be determined by comparing the temperature difference T0-T11 with the first threshold ΔT1 that (T0-T11) < ΔT1. Therefore, it is determined that the ambient temperature at the air inlet of the charging device in the second state is within the normal range, and the cooling fan of the charging device in the second state is not activated.

[0114] This application also provides another method for calculating the temperature difference between a second temperature and a first temperature. Compared with the above embodiments, this embodiment compares the second temperature with the average temperature among a plurality of first temperatures. The method includes:

[0115] Based on the acquired first temperatures, the average temperature among these first temperatures is obtained. The second temperature is compared with the average temperature among the first temperatures to obtain the temperature difference.

[0116] Let the average temperature of the multiple first temperatures T1 be denoted as T12. Using the four charging devices mentioned above as an example, the inlet ambient temperatures T1 of the three charging devices in the first state are 47℃, 48℃, and 49℃ respectively. Therefore, the average temperature T12 obtained through analysis is 48℃; and the obtained second temperature T0 is 49.5℃. Thus, the temperature difference T0-T12 between the second temperature T0 and the average temperature T12 is 1.5℃.

[0117] In some embodiments, when the set first threshold ΔT1 is 1°C, by comparing the temperature difference T0-T12 with the first threshold ΔT1, it can be determined that (T0-T12) > ΔT1. Therefore, it is determined that the ambient temperature at the air inlet of the charging device in the second state is too high, and the corresponding cooling fan is activated to reduce the ambient temperature at the air inlet of the charging device in the second state.

[0118] In some other embodiments, when the first threshold ΔT1 is set to 3°C, by comparing the temperature difference T0-T12 with the first threshold ΔT1, it can be determined that (T0-T12) < ΔT1. Therefore, it is determined that the ambient temperature at the air inlet of the charging device in the second state is within the normal range, and the cooling fan of the charging device in the second state is not activated.

[0119] For the case where the temperature difference (T0-T11, T0-T12) is the same as the first threshold △T1, the control method of this application provides two types of embodiments: one is to start the cooling fan of the charging device in the second state; the other is not to start the cooling fan of the charging device in the second state.

[0120] For example, let's take the temperature difference value T0-T11 as an example. When the first threshold ΔT1 is set to 2.5℃, by comparing the temperature difference T0-T11 with the first threshold ΔT1, we can find that (T0-T11) = ΔT1. Therefore, we determine that the ambient temperature at the air inlet of the charging device in the second state is within the normal range, and thus, the cooling fan of the charging device in the second state is not activated.

[0121] In some other embodiments, when the first threshold ΔT1 is set to 2.5°C, by comparing the temperature difference T0-T11 with the first threshold ΔT1, it can be determined that (T0-T11) = ΔT1. Therefore, it is determined that the ambient temperature at the air inlet of the charging device in the second state is relatively high, requiring cooling to prevent potential overheating shutdown. To this end, the cooling fan of the charging device in the second state is activated.

[0122] In some embodiments, the control method of the charging pile further includes: turning off the cooling fan of the charging device in the second state when the temperature difference is less than or equal to a second threshold.

[0123] It should be understood that the second threshold refers to the lower limit temperature of the temperature difference. Let the second threshold be denoted as ΔT2, which is less than or equal to the first threshold ΔT1. Therefore, when the ambient temperature at the air inlet of the charging device in the second state decreases to a certain level, it can be determined that the ambient temperature at the air inlet of the charging device in the second state is within the normal range and will not affect the charging operation of the charging pile. Thus, the cooling fan of the charging device in the second state is turned off.

[0124] For example: △T1=△T2=2.5℃. When the temperature difference is greater than 2.5℃, the cooling fan of the charging device in the second state is activated to remove the heat accumulated on the charging device and reduce the ambient temperature at its air inlet. When the temperature difference is less than 2.5℃, and it is determined that the ambient temperature at the air inlet of the charging device in the second state is within the normal range, the cooling fan of the charging device in the second state is turned off.

[0125] For example, if ΔT1 = 3℃ and ΔT2 = 1℃, when the temperature difference is greater than 3℃, the cooling fan of the charging device in its second state is activated to remove the heat accumulated on the charging device and lower the ambient temperature at its air inlet. When the temperature difference drops to less than 1℃, confirming that the ambient temperature at the air inlet of the charging device in its second state is within the normal range, the cooling fan of the charging device in its second state is turned off.

[0126] In some embodiments, when there are multiple charging devices in the second state, each charging device in the second state has an air inlet ambient temperature; that is, multiple second temperatures can be obtained corresponding to the multiple charging devices in the second state. Similar to the charging piles (10a, 10b) in the above embodiments, the multiple second temperatures in this embodiment refer to at least two second temperatures. Accordingly, among the multiple second temperatures, there are second temperatures with relatively higher values ​​and second temperatures with relatively lower values.

[0127] For ease of understanding, let's consider two charging devices in the second state as an example. Two charging devices in the second state can generate two second temperatures. When the two second temperatures are different, one second temperature has a relatively higher value, and the other a relatively lower value. For example, if the two second temperatures are 49℃ and 51℃, then the highest temperature is 51℃, the lowest temperature is 49℃, and the average temperature is 50℃. Conversely, when the two second temperatures are the same, that second temperature simultaneously represents the highest, lowest, and average temperature; for example, if both second temperatures are 50℃, then the highest, lowest, and average temperature are all 50℃.

[0128] To address this situation, the control method for charging piles provided in this application embodiment can obtain the highest, lowest, or average temperature among multiple second temperatures. This highest, lowest, or average temperature is then used as the overall second temperature of the multiple charging devices in the second state, and compared with the first temperature to obtain the temperature difference. Based on this, a heat dissipation strategy can be adaptively configured according to usage requirements to reduce the ambient temperature at the air inlet of the multiple charging devices 32 in the second state.

[0129] Based on this, in some embodiments, the highest temperature among a plurality of second temperatures is compared with the lowest temperature among a plurality of first temperatures to obtain a temperature difference. Alternatively, the highest temperature among a plurality of second temperatures is compared with the average temperature among a plurality of first temperatures to obtain a temperature difference.

[0130] In other embodiments, the lowest of a plurality of second temperatures is compared with the lowest of a plurality of first temperatures to obtain a temperature difference. Alternatively, the lowest of a plurality of second temperatures is compared with the average of a plurality of first temperatures to obtain a temperature difference.

[0131] In other embodiments, the average temperature among a plurality of second temperatures is compared with the lowest temperature among a plurality of first temperatures to obtain a temperature difference. Alternatively, the average temperature among a plurality of second temperatures is compared with the average temperature among a plurality of first temperatures to obtain a temperature difference.

[0132] In some embodiments, the control method of the charging pile further includes: acquiring the internal temperature of the charging devices when all charging devices are working or all are not working; and controlling the cooling fan of the working charging device to operate according to a preset speed regulation mode based on the internal temperature and the corresponding first temperature.

[0133] The above-disclosed embodiments are merely specific examples of this application, but this application is not limited thereto. Those skilled in the art can make various modifications and variations to this application without departing from its spirit and scope. Obviously, all such modifications and variations should fall within the protection scope claimed by this application. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any special limitation on this application.

Claims

1. A control method for a charging pile, characterized in that, The charging pile includes multiple charging devices and a meter; the charging devices are equipped with cooling fans and air inlets; the method includes: The first temperature of at least one charging device in the charging pile that is in operation is obtained, wherein the first temperature is the ambient temperature of the air inlet of the charging device in operation. The second temperature of at least one charging device in the charging pile that is in a dormant state is obtained, wherein the second temperature is the ambient temperature of the air inlet of the charging device in the dormant state. In response to the temperature difference between the second temperature and the first temperature exceeding a first threshold, the cooling fan of the charging device in sleep mode is activated; wherein, the first threshold is the upper limit temperature of the temperature difference. In response to the temperature difference between the second temperature and the first temperature being less than or equal to a second threshold, the cooling fan of the charging device in a dormant state is turned off; wherein the second threshold is the lower limit temperature of the temperature difference, and the second threshold is less than or equal to the first threshold.

2. The control method for a charging pile as described in claim 1, characterized in that, The method further includes: In response to the temperature difference being less than or equal to the first threshold, the cooling fan of the charging device in a dormant state is not activated.

3. The control method for a charging pile as described in claim 1, characterized in that, The method further includes: In response to the temperature difference being equal to the first threshold, the cooling fan of the charging device in a dormant state is activated.

4. The control method for a charging pile as described in claim 1, characterized in that, The step of obtaining the first temperature of at least one charging device in the charging pile that is in operation includes: obtaining a plurality of first temperatures based on a plurality of charging devices that are in operation; wherein the number of the plurality of first temperatures corresponds to the number of charging devices that are in operation.

5. The control method for a charging pile as described in claim 4, characterized in that, The method further includes: Based on the plurality of first temperatures, the lowest temperature or average temperature among the plurality of first temperatures is obtained; The temperature difference is obtained by comparing the second temperature with the lowest temperature among the plurality of first temperatures; or, the temperature difference is obtained by comparing the second temperature with the average temperature among the plurality of first temperatures.

6. The control method for a charging pile as described in claim 5, characterized in that, The method further includes: When there are multiple second temperatures The highest temperature among the plurality of second temperatures is compared with the lowest temperature among the plurality of first temperatures to obtain the temperature difference value; or, The highest temperature among the plurality of second temperatures is compared with the average temperature among the plurality of first temperatures to obtain the temperature difference value; or, The lowest temperature among the plurality of second temperatures is compared with the lowest temperature among the plurality of first temperatures to obtain the temperature difference value; or, The lowest temperature among the plurality of second temperatures is compared with the average temperature among the plurality of first temperatures to obtain the temperature difference value; or, The average temperature among the plurality of second temperatures is compared with the lowest temperature among the plurality of first temperatures to obtain the temperature difference value; or, The average temperature among the plurality of second temperatures is compared with the average temperature among the plurality of first temperatures to obtain the temperature difference.

7. The control method for a charging pile as described in claim 1, characterized in that, The method further includes: Determine whether the second temperature exceeds the third threshold; When the second temperature is greater than the third threshold, the cooling fan of the charging device in dormant state is directly activated; When the second temperature is less than or equal to the third threshold, the temperature difference between the second temperature and the first temperature is obtained.

8. A charging pile for charging electric vehicles, characterized in that, The charging pile includes a meter, multiple charging devices and a monitor. The charging devices are equipped with a cooling fan, an air inlet and an ambient temperature sensor. The charging device is used to: obtain a corresponding first temperature or a second temperature through the ambient temperature sensor, wherein the first temperature is the ambient temperature of the air inlet of the charging device when it is in working state, and the second temperature is the ambient temperature of the air inlet of the charging device when it is in dormant state. The monitor is used for: When the temperature difference between the second temperature and the first temperature exceeds a first threshold, the cooling fan of the charging device in sleep mode is activated; wherein, the first threshold is the upper limit of the temperature difference. When the temperature difference is less than or equal to the second threshold, the cooling fan of the charging device in hibernation state is turned off; the second threshold is the lower limit temperature of the temperature difference, and the second threshold is less than or equal to the first threshold.

9. The charging pile as described in claim 8, characterized in that, The monitor is also configured to not activate the cooling fan of the charging device in a dormant state when the temperature difference is less than or equal to the first threshold.

10. The charging pile as described in claim 8, characterized in that, The monitor is also used to activate the cooling fan of the charging device in a dormant state when the temperature difference is equal to the first threshold.

11. The charging pile as described in claim 8, characterized in that, Based on a plurality of charging devices in operation, the monitor is configured to receive a plurality of first temperatures and obtain the lowest temperature or average temperature among the plurality of first temperatures; wherein the number of the plurality of first temperatures corresponds to the number of charging devices in operation. Based on the lowest or average temperature among the plurality of first temperatures, the monitor is further configured to compare the second temperature with the lowest temperature among the plurality of first temperatures to obtain the temperature difference; or, compare the second temperature with the average temperature among the plurality of first temperatures to obtain the temperature difference.

12. The charging pile as described in claim 11, characterized in that, When there are multiple second temperatures, the monitor is also used to obtain the highest temperature, lowest temperature, or average temperature among the multiple second temperatures; The monitor is also used to compare the highest temperature among the plurality of second temperatures with the lowest temperature among the plurality of first temperatures to obtain the temperature difference value; or, The highest temperature among the plurality of second temperatures is compared with the average temperature among the plurality of first temperatures to obtain the temperature difference value; or, The lowest temperature among the plurality of second temperatures is compared with the lowest temperature among the plurality of first temperatures to obtain the temperature difference value; or, The lowest temperature among the plurality of second temperatures is compared with the average temperature among the plurality of first temperatures to obtain the temperature difference value; or, The average temperature among the plurality of second temperatures is compared with the lowest temperature among the plurality of first temperatures to obtain the temperature difference value; or, The average temperature among the plurality of second temperatures is compared with the average temperature among the plurality of first temperatures to obtain the temperature difference.

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