Liquid cooling device operation control method of charging pile, electronic equipment and storage medium

Abstract

The invention relates to the technical field of electric vehicle charging, and particularly discloses a liquid cooling device operation control method of a charging pile, electronic equipment and a storage medium, and the real-time charging condition of the charging pile is determined by identifying the charging cooperation application scene of a first charging gun and a second charging gun. And on the basis of the current charging cooperation application scene and in combination with the charging power and temperature of the first charging gun and the second charging gun in the charging cooperation application scene, the opening and closing states of the first control valve, the second control valve and the third control valve are adaptively controlled, so that the corresponding liquid cooling pump is effectively, reliably and selectively started. Therefore, the use flexibility of the liquid cooling device is improved, the power consumption of the liquid cooling device is reduced, the real-time rotating speed of the corresponding liquid cooling pump can be adaptively adjusted according to the monitored real-time liquid cooling oil temperature of the liquid cooling device under the condition that the corresponding liquid cooling pump is started, the heat dissipation requirement of the liquid cooling device can be met, and the heat dissipation efficiency of the liquid cooling device is improved. And meanwhile, the system loss of the liquid cooling device is reduced.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle charging technology, and in particular to a method for controlling the operation of a liquid cooling device for a charging pile, an electronic device, and a computer-readable storage medium. Background Technology

[0002] With the continuous development and upgrading of new energy vehicles, charging piles, as a basic supporting product, have also ushered in unprecedented development opportunities. As the battery capacity of electric vehicles gradually increases, users' demands for charging current and efficiency are also gradually rising. Currently, most charging piles on the market use a liquid cooling system where one cooling unit is used per charging gun, or two guns share one cooling unit. Whenever one charging gun starts charging, the entire liquid cooling system activates, which not only reduces the flexibility of the liquid cooling system but also increases system losses. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, this invention proposes an operation control method, electronic equipment, and storage medium for a liquid cooling device in a charging pile, which can increase the flexibility of the liquid cooling device and reduce its power consumption.

[0004] In a first aspect, embodiments of the present invention provide a method for controlling the operation of a liquid cooling device in a charging pile. The charging pile is equipped with a first charging gun and a second charging gun. The liquid cooling device includes a first liquid cooling pump, a second liquid cooling pump, a first control valve, a second control valve, and a third control valve. The first liquid cooling pump is connected to the first charging gun through the second control valve, the second liquid cooling pump is connected to the second charging gun through the third control valve, and the first liquid cooling pump is connected to the second liquid cooling pump through the first control valve. The method includes the following steps: Step S1: When the charging application scenario of the first charging gun and the second charging gun is identified, the opening and closing states of the first control valve, the second control valve and the third control valve are controlled according to the charging application scenario and the obtained charging power and temperature of the first charging gun and the second charging gun in the charging application scenario, so as to turn on the first liquid cooling pump and / or the second liquid cooling pump. Step S2: Adjust the real-time rotation speed of the first liquid cooling pump and / or the second liquid cooling pump according to the real-time liquid cooling oil temperature of the liquid cooling device.

[0005] Optionally, in one embodiment of the present invention, when the charging application scenario is that the first charging gun and the second charging gun are simultaneously charging an electric vehicle, step S1 includes the following steps: Step S11: When it is detected that the charging power of the first charging gun and the second charging gun in the charging cooperation application scenario both meet the preset first opening condition and the temperature both meet the preset second opening condition, the first control valve is kept in the open state, the second control valve and the third control valve are closed, and the first liquid cooling pump and the second liquid cooling pump are started. Step S12: When it is detected that the charging power of the first charging gun and the second charging gun in the charging cooperation application scenario does not meet the preset first opening condition, and the temperature of the first charging gun in the charging cooperation application scenario meets the preset second opening condition, the third control valve is kept in the open state, and the second control valve is closed. Step S13: When it is detected that the charging power of the second charging gun in the charging application scenario does not meet the preset first opening condition, the temperature does not meet the preset second opening condition, and the temperature of the first charging gun in the charging application scenario is on the rise and the first liquid cooling pump is in full power operation state, the third control valve is kept in the open state, and the first control valve is closed.

[0006] Optionally, in one embodiment of the present invention, when the charging application scenario is that the first charging gun and the second charging gun are charging different electric vehicles respectively, step S1 includes the following steps: Step S14: When it is detected that the charging power of the first charging gun and the second charging gun in the charging cooperation application scenario does not meet the preset first opening condition and the temperature does not meet the preset second opening condition, the first control valve, the second control valve and the third control valve are kept in the open state. Step S15: When it is detected that the charging power of the first charging gun in the charging cooperation application scenario meets the preset first opening condition or the temperature meets the preset second opening condition, and the charging power of the second charging gun in the charging cooperation application scenario does not meet the preset first opening condition or the temperature does not meet the preset second opening condition, the first control valve and the third control valve are kept in the open state, the second control valve is closed, and the first liquid cooling pump is started. or, When it is detected that the charging power of the second charging gun in the charging cooperation application scenario meets the preset first opening condition or the temperature meets the preset second opening condition, and the charging power of the first charging gun in the charging cooperation application scenario does not meet the preset first opening condition or the temperature does not meet the preset second opening condition, the first control valve and the second control valve are kept in the open state, the third control valve is closed, and the second liquid cooling pump is started. Step S16: When it is detected that the charging power of the first charging gun and the second charging gun in the charging cooperation application scenario both meet the preset first opening condition or the temperature both meet the preset second opening condition, the first control valve is kept in the open state, and the second control valve and the third control valve are closed.

[0007] Optionally, in one embodiment of the present invention, when the charging application scenario is: the first charging gun is charging an electric vehicle and the second charging gun is not charging, step S1 includes the following steps: Step S17: When it is detected that the charging power of the first charging gun in the charging cooperation application scenario does not meet the preset first opening condition and the temperature does not meet the preset second opening condition, the first control valve, the second control valve and the third control valve are kept in the open state. Step S18: When it is detected that the charging power of the first charging gun in the charging cooperation application scenario meets the preset first opening condition or the temperature meets the preset second opening condition, and the reduction of the liquid cooling oil temperature of the liquid cooling device does not meet the preset cooling condition, the first control valve and the third control valve are kept in the open state, the second control valve is closed, and the first liquid cooling pump is started. Step S19: When it is detected that the reduction in the liquid cooling oil temperature by the first liquid cooling pump does not meet the preset cooling condition, the third control valve is kept in the open state, and the first control valve is closed.

[0008] Optionally, in one embodiment of the present invention, step S2 includes the following steps: Step S21: For the real-time liquid cooling oil temperature of the liquid cooling device at each moment, obtain the absolute value of the deviation of the real-time liquid cooling oil temperature from the preset target oil temperature threshold, wherein the target oil temperature threshold corresponding to the real-time liquid cooling oil temperature at different moments is different. Step S22: Using a PID control algorithm and considering the absolute values ​​of the deviations at the previous and current times, adjust the real-time speed of the first liquid cooling pump and / or the second liquid cooling pump at the current time.

[0009] Optionally, in one embodiment of the present invention, step S22 is implemented using the following formula: ; in, The real-time rotational speed of the first liquid cooling pump and / or the second liquid cooling pump at the current moment. The real-time rotational speed of the first liquid cooling pump and / or the second liquid cooling pump at the previous moment. For the preset integral coefficient, For the preset differential coefficients, This is the deviation of the current real-time liquid cooling oil temperature from the corresponding target oil temperature threshold. This is the deviation of the real-time liquid cooling oil temperature at the previous moment from the corresponding target oil temperature threshold.

[0010] Optionally, in one embodiment of the present invention, after step S1, the following step is further included: Step S3: Based on the relationship between the real-time liquid cooling oil temperature of the liquid cooling device and the preset first oil temperature threshold and second oil temperature threshold, determine the target heat dissipation method for the real-time liquid cooling oil temperature, wherein the first oil temperature threshold is less than the second oil temperature threshold. Step S4: Use the target heat dissipation method to cool down the real-time liquid cooling oil until the real-time output of the charging pile can support the charging power of the electric vehicle currently being charged.

[0011] Optionally, in one embodiment of the present invention, the target heat dissipation method includes at least two of the following: Natural air cooling; Fan cooling; Water cooling for heat dissipation.

[0012] In a second aspect, embodiments of the present invention provide an electronic device, comprising: At least one processor; At least one memory for storing at least one program; When at least one of the programs is executed by at least one of the processors, the liquid cooling device operation control method for the charging pile as described in the first aspect is implemented.

[0013] Thirdly, embodiments of the present invention provide a computer-readable storage medium storing a processor-executable program, which, when executed by a processor, is used to implement the operation control method for the liquid cooling device of the charging pile as described in the first aspect.

[0014] The present invention proposes a liquid cooling device operation control method, electronic equipment, and storage medium for charging piles. By identifying the charging cooperation application scenario of the first and second charging guns, the real-time charging status of the charging pile is determined. Then, based on the current charging cooperation application scenario and the charging power and temperature of the first and second charging guns under the charging cooperation application scenario, the opening and closing states of the first, second, and third control valves are adaptively controlled to effectively and reliably selectively activate the corresponding first and / or second liquid cooling pumps. This increases the flexibility of the liquid cooling device and reduces its power consumption. Furthermore, when the corresponding first and / or second liquid cooling pumps are activated, the real-time speed of the first and / or second liquid cooling pumps can be adaptively adjusted according to the monitored real-time liquid cooling oil temperature of the liquid cooling device. This satisfies the heat dissipation requirements of the liquid cooling device and further reduces its system losses. Attached Figure Description

[0015] Figure 1 This is a flowchart of an operation control method for a liquid cooling device of a charging pile according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a liquid cooling device for a charging pile according to an embodiment of the present invention; Figure 3 yes Figure 1 A flowchart of step S1 in the process; Figure 4 yes Figure 1 Another flowchart for step S1 in the process; Figure 5 This is a schematic diagram of the startup process of a liquid cooling device for a charging pile according to an embodiment of the present invention; Figure 6 yes Figure 1 The flowchart of step S2 in the text; Figure 7 yes Figure 6 Execution flow diagram; Figure 8 This is a schematic diagram of the execution process for cooling real-time liquid cooling oil using a target heat dissipation method, provided by an embodiment of the present invention. Figure 9 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0016] like Figure 1 As shown, an embodiment of the present invention provides an operation control method for a liquid cooling device of a charging pile. This method may include, but is not limited to, steps S1 to S2, wherein, as... Figure 2As shown, the charging pile may be configured with, but is not limited to, a first charging gun and a second charging gun. The liquid cooling device includes a first liquid cooling pump, a second liquid cooling pump, a first control valve, a second control valve, and a third control valve. The first liquid cooling pump is connected to the first charging gun through the second control valve, the second liquid cooling pump is connected to the second charging gun through the third control valve, and the first liquid cooling pump is connected to the second liquid cooling pump through the first control valve. The first liquid cooling pump is located in a separate area A, and the second liquid cooling pump is located in a separate area B. The specific models and parameters of the first charging gun, the second charging gun, the first liquid cooling pump, the second liquid cooling pump, the first control valve, the second control valve, and the third control valve can be set according to the actual application scenario, and there are no restrictions here.

[0017] Step S1: When identifying the charging application scenario of the first charging gun and the second charging gun, based on the charging application scenario and the obtained charging power and temperature of the first charging gun and the second charging gun in the charging application scenario, control the opening and closing state of the first control valve, the second control valve and the third control valve to turn on the first liquid cooling pump and / or the second liquid cooling pump. It can be understood that "first liquid cooling pump and / or the second liquid cooling pump" here indicates that the specific liquid cooling pump to be turned on needs to be determined according to the opening and closing state of the first control valve, the second control valve and the third control valve. It is possible that both are turned on or neither is turned on, or only one of the two is turned on. Step S2: Adjust the real-time speed of the first liquid cooling pump and / or the second liquid cooling pump according to the real-time liquid cooling oil temperature of the liquid cooling device.

[0018] In this step, the real-time charging status of the charging pile is determined by identifying the charging cooperation application scenarios of the first and second charging guns. Then, based on the current charging cooperation application scenario and the charging power and temperature of the first and second charging guns under the charging cooperation application scenario, the opening and closing states of the first, second, and third control valves are adaptively controlled to effectively and reliably selectively activate the corresponding first and / or second liquid cooling pumps. This increases the flexibility of the liquid cooling device and reduces its power consumption. Furthermore, when the corresponding first and / or second liquid cooling pumps are activated, the real-time speed of the first and / or second liquid cooling pumps can be adaptively adjusted according to the monitored real-time liquid cooling oil temperature of the liquid cooling device. This not only meets the heat dissipation requirements of the liquid cooling device but also helps to further reduce its system losses.

[0019] In one embodiment, the charging cooperation of the first charging gun and the second charging gun can be used in various scenarios, such as, but not limited to, simultaneous charging with both guns, single charging with both guns, and single charging with one gun. Simultaneous charging with both guns means that both charging guns charge the same electric vehicle at the same time. Single charging with both guns means that both charging guns charge different electric vehicles separately. Single charging with one gun means that only one charging gun charges one electric vehicle. Different charging cooperation scenarios determine to some extent whether the liquid cooling device needs to perform single-pump or dual-pump circulation. While meeting the charging power requirements, this also reduces the problem of high power consumption caused by the simultaneous start of both pumps or the start of a high-power pump during each charge. At the same time, since a liquid cooling device contains two circulations... The system features two pumps that can simultaneously power the same charging terminal, thus reducing the power requirements of the pumps and consequently their size, resulting in a smaller and more compact charging pile system. Furthermore, the dual-pump system incorporates redundancy, preventing charging current drops caused by single-point failures. Simultaneous use of both pumps also reduces the need for full-power operation, extending the lifespan of the liquid cooling system. In particular, by controlling the opening and closing states of the first, second, and third control valves based on the charging power and temperature of the first and second charging guns under specific charging scenarios, the system can effectively switch between single and dual-pump control modes, making control simpler and more convenient.

[0020] like Figure 3 As shown, in one embodiment of the present invention, when the charging application scenario is that the first charging gun and the second charging gun are simultaneously charging an electric vehicle, step S1 may include, but is not limited to, the following steps: Step S11: When it is detected that the charging power of the first charging gun and the second charging gun in the charging cooperation application scenario both meet the preset first opening condition and the temperature both meet the preset second opening condition, the first control valve is kept in the open state, the second control valve and the third control valve are closed, and the first liquid cooling pump and the second liquid cooling pump are started. Step S12: When it is detected that the charging power of the first charging gun and the second charging gun in the charging cooperation application scenario does not meet the preset first opening condition, and the temperature of the first charging gun in the charging cooperation application scenario meets the preset second opening condition, the third control valve is kept in the open state and the second control valve is closed. Step S13: When it is detected that the charging power of the second charging gun in the charging cooperation application scenario does not meet the preset first opening condition, the temperature does not meet the preset second opening condition, and the temperature of the first charging gun in the charging cooperation application scenario is on the rise and the first liquid cooling pump is in full power operation state, the third control valve is kept in the open state, and the first control valve is closed.

[0021] In one embodiment of the present invention, when the charging application scenario is that the first charging gun and the second charging gun are charging different electric vehicles respectively, step S1 may include, but is not limited to, the following steps: Step S14: When it is detected that the charging power of the first charging gun and the second charging gun in the charging cooperation application scenario does not meet the preset first opening condition and the temperature does not meet the preset second opening condition, the first control valve, the second control valve and the third control valve are kept in the open state. Step S15: When it is detected that the charging power of the first charging gun in the charging cooperation application scenario meets the preset first opening condition or the temperature meets the preset second opening condition, and the charging power of the second charging gun in the charging cooperation application scenario does not meet the preset first opening condition or the temperature does not meet the preset second opening condition, the first control valve and the third control valve are kept in the open state, the second control valve is closed, and the first liquid cooling pump is started. or, When it is detected that the charging power of the second charging gun in the charging cooperation application scenario meets the preset first opening condition or the temperature meets the preset second opening condition, and the charging power of the first charging gun in the charging cooperation application scenario does not meet the preset first opening condition or the temperature does not meet the preset second opening condition, the first control valve and the second control valve are kept in the open state, the third control valve is closed, and the second liquid cooling pump is started. Step S16: When it is detected that the charging power of the first charging gun and the second charging gun in the charging cooperation application scenario both meet the preset first opening condition or the temperature both meet the preset second opening condition, the first control valve is kept in the open state, and the second control valve and the third control valve are closed.

[0022] like Figure 4 As shown, in one embodiment of the present invention, when the charging application scenario is: the first charging gun is charging an electric vehicle and the second charging gun is not charging, step S1 may include, but is not limited to, the following steps: Step S17: When it is detected that the charging power of the first charging gun in the charging cooperation application scenario does not meet the preset first opening condition and the temperature does not meet the preset second opening condition, the first control valve, the second control valve and the third control valve are kept in the open state. Step S18: When it is detected that the charging power of the first charging gun in the charging cooperation application scenario meets the preset first opening condition or the temperature meets the preset second opening condition, and the reduction of the liquid cooling oil temperature of the liquid cooling device does not meet the preset cooling condition, the first control valve and the third control valve are kept in the open state, the second control valve is closed, and the first liquid cooling pump is started. Step S19: When it is detected that the reduction in liquid cooling oil temperature by the first liquid cooling pump does not meet the preset cooling condition, the third control valve is kept in the open state, and the first control valve is closed.

[0023] It should be noted that the first opening condition, the second opening condition, and the preset cooling condition in the above embodiments can be set according to the actual application scenario. There are no restrictions here. For example, the first opening condition can be set to the charging power being less than or equal to the preset maximum charging power threshold, the second opening condition can be set to the charging gun temperature being less than or equal to the preset maximum temperature threshold, and the preset cooling condition can be set to the liquid cooling oil temperature decreasing by a rate greater than or equal to the preset minimum cooling rate within a unit time.

[0024] Specifically, refer to Figure 5 , Figure 5 This is a schematic diagram of the start-up process of the liquid cooling device. After the charging pile system starts working, it first checks whether the first charging gun (hereinafter referred to as gun A) and the second charging gun (hereinafter referred to as gun B) of the charging pile are charging simultaneously, charging one gun at a time, or charging one gun at a time. Then, it performs adaptive control based on the determined charging coordination application scenario of the two charging guns, as shown below: In operating condition 1, when both charging guns are charging simultaneously, if the charging power and temperature of both guns meet the conditions for the liquid cooling pump to start, the first control valve remains open, and the second and third control valves are closed, thus starting the first and second liquid cooling pumps. Further, if the charging power of both guns does not meet the conditions for starting the liquid cooling pump, but the temperature of gun A meets the conditions for starting the liquid cooling pump, the third control valve remains open, and the second control valve is closed. Further, if the charging power and temperature of gun B do not meet the conditions for starting the liquid cooling pump, but the temperature of gun A continues to rise, and the liquid cooling pump has reached full power operation, the third control valve remains open, the first control valve is closed, and oil circulation in area B is used to cool gun A. Similarly, if the charging power and temperature of gun A do not meet the conditions for starting the liquid cooling pump, but the temperature of gun B continues to rise, and the liquid cooling pump has reached full power operation, the second control valve remains open, the first control valve is closed, and the second liquid cooling pump is started, using oil circulation in area A to cool gun B. Further details are omitted.

[0025] In operating condition 2, when both charging guns are used for dual-gun single charging, if the charging power and temperature of both guns do not meet the conditions for the liquid cooling pump to start, then the first control valve, the second control valve, and the third control valve remain open. Furthermore, if the charging power or temperature of gun A meets the conditions for starting the liquid cooling pump, but the charging power and temperature of gun B do not, then the first control valve and the third control valve remain open, and the second control valve is closed to start the first liquid cooling pump. Similarly, if the charging power or temperature of gun B meets the conditions for starting the liquid cooling pump, but the charging power and temperature of gun A do not, then the first control valve and the second control valve remain open, and the third control valve is closed to start the second liquid cooling pump. Furthermore, if the charging power or temperature of both guns A and B meets the conditions for starting the liquid cooling pump, then the first control valve is opened, and the second and third control valves are closed.

[0026] Condition 3: When both charging guns are charging individually, taking charging gun A as an example (charging gun B is similar and will not be elaborated upon), if the charging power and temperature of gun A do not meet the conditions for the liquid cooling pump to start, then the first control valve, the second control valve, and the third control valve are disconnected. Further, if the charging power or temperature of gun A meets the conditions for starting the liquid cooling pump and satisfies the current liquid cooling oil temperature cooling requirement, then the first and third control valves remain open, and the second control valve is closed. Further, if the charging power or temperature of gun A meets the conditions for starting the liquid cooling pump but does not meet the current liquid cooling oil temperature cooling requirement, then the third control valve remains open, and the first and second control valves are closed. Further, if the first liquid cooling pump corresponding to gun A has started and is cooling the liquid cooling oil, but the cooling process does not meet the current liquid cooling oil temperature cooling requirement, then the third control valve is disconnected, and the first control valve is closed.

[0027] like Figure 6 As shown, in one embodiment of the present invention, step S2 may include, but is not limited to, the following steps: Step S21: For the real-time liquid cooling oil temperature of the monitored liquid cooling device at each moment, obtain the absolute value of the deviation of the real-time liquid cooling oil temperature from the preset target oil temperature threshold, wherein the target oil temperature threshold corresponding to the real-time liquid cooling oil temperature at different moments is different. Step S22: Using a PID control algorithm, combined with the absolute values ​​of the deviations at the previous and current times, adjust the real-time speed of the first liquid cooling pump and / or the second liquid cooling pump at the current time.

[0028] It can be seen that while ensuring the automatic start-up mode of the liquid cooling pump, the speed of the liquid cooling pump is automatically adjusted based on the real-time liquid cooling oil temperature monitored at each moment of the liquid cooling device, combined with the PID control algorithm. This not only meets the heat dissipation requirements but also reduces system losses. In particular, the control quantity uses the deviation value of the real-time liquid cooling oil temperature from the preset target oil temperature threshold, which can better characterize the impact of changes in the real-time liquid cooling oil temperature. Based on this, the real-time speed of the liquid cooling pump is adjusted more accurately with smaller errors.

[0029] In one embodiment, step S22 may be implemented using, but is not limited to, the following formula: ; in, This represents the real-time rotational speed of the first and / or second liquid cooling pump at the current moment. The real-time rotational speed of the first and / or second liquid cooling pump at the previous moment. For the preset integral coefficient, For the preset differential coefficients, This represents the deviation of the current real-time liquid cooling oil temperature from the corresponding target oil temperature threshold. This represents the deviation of the real-time liquid cooling oil temperature from the previous moment relative to the corresponding target oil temperature threshold.

[0030] It should be noted that the above formula illustrates And determine the condition under this condition The relationship between positive and negative values, for The same applies to this situation; similarly, in this case, it is necessary to determine... The positive and negative values ​​are used to calculate the relationship by substituting them into the above formula. To avoid redundancy, this will not be elaborated here.

[0031] The following combination Figure 7 To illustrate, let's look at the liquid cooling pump speed adjustment method when the current charging state is single-gun single-charge, that is, when only one of the two guns is activated for charging. For example, the speed adjustment method of the first liquid cooling pump corresponding to gun A's activation is as follows: Figure 7 As shown: Step 1: When the liquid cooling oil temperature is monitored to be 48℃, and the target oil temperature of the liquid cooling pump is 45℃, the speed of the liquid cooling pump is 0 + 0.1 * (48 - 45) = 0.3, where 0.1 is the value of the preset integral coefficient; Step 2: The liquid cooling pump runs continuously at a speed of 0.3, and the liquid cooling oil temperature is monitored in real time. After the liquid cooling pump has been running for a period of time, the detected liquid cooling oil temperature is 46℃. At this time, the target oil temperature of the liquid cooling pump is 45℃. Therefore, the deviation value at the previous moment is 45 – 48 = -3. The deviation value at the current moment is 45–46=-1, that is, |the deviation value at the previous moment|>|the deviation value at the current moment| and the deviation value at the current moment<0, which indicates that the current liquid cooling oil temperature has an upward trend and the liquid cooling pump speed needs to be increased. Therefore, the liquid cooling pump speed is 0.3+0.1*(45-46)+0.1*(3–1)=0.4, where the preset differential coefficient is also set to 0.1; Step 3: Returning to Step 1, the liquid cooling pump continues to run at a speed of 0.3, and the liquid cooling oil temperature is monitored in real time. After the liquid cooling pump has been running for a period of time, the detected liquid cooling oil temperature is 44℃. After running for 10 minutes, since the liquid cooling oil temperature shows a downward trend, the deviation value at the previous moment is 45-48=-3, and the deviation value at the current moment is 45-44=1. That is, |the deviation value at the previous moment|>|the deviation value at the current moment| and the deviation value at the current moment>0, which indicates that the current liquid cooling oil temperature has a downward trend and the liquid cooling pump speed needs to be reduced. Therefore, the liquid cooling pump speed is 0.3+0.1*(45-44)-0.1*(3-1)=0.2. Similarly, if the deviation value at the current moment is equal to 0, it means that the current liquid cooling pump speed can meet the cooling requirement of the liquid cooling oil temperature, so the current liquid cooling pump speed can be maintained, that is, the liquid cooling pump speed is maintained at 0.3. Step 4: Maintain the liquid cooling oil temperature at 45℃ and run continuously for 10 minutes. If the liquid cooling oil temperature continues to decrease, adjust the target temperature of the liquid cooling oil to 35℃. Similarly, continue to adjust the real-time speed of the liquid cooling pump in the same way as the above steps until the liquid cooling oil temperature reaches the target temperature of 35℃. Step 5: Maintain the liquid cooling oil temperature at 35℃ and run continuously for 10 minutes. If the liquid cooling oil temperature continues to decrease, adjust the target temperature of the liquid cooling oil to 25℃. Similarly, continue to adjust the real-time speed of the liquid cooling pump according to the above steps until the liquid cooling oil temperature reaches the target temperature of 25℃. Step 6: Maintain the liquid cooling oil temperature at 25℃ and run continuously for 10 minutes. If the liquid cooling oil temperature continues to decrease, adjust the target temperature of the liquid cooling oil to 23℃. Similarly, continue to adjust the real-time speed of the liquid cooling pump in the same way as the above steps until the liquid cooling oil temperature reaches the target temperature of 23℃. Step 7: When the liquid cooling oil temperature is maintained at 23℃ and continues to run for 2 minutes, the liquid cooling oil temperature is within the appropriate operating range, so control the liquid cooling pump to stop rotating.

[0032] In one embodiment of the present invention, the steps following step S1 may include, but are not limited to, the following steps: Step S3: Based on the relationship between the real-time liquid cooling oil temperature of the liquid cooling device and the preset first oil temperature threshold and second oil temperature threshold, determine the target heat dissipation method for the real-time liquid cooling oil temperature, wherein the first oil temperature threshold is less than the second oil temperature threshold; the target heat dissipation method may include, but is not limited to, at least two of the following: natural air cooling; fan cooling; water cooling. Step S4: Use the target heat dissipation method to cool down the real-time liquid cooling oil temperature until the real-time output of the charging pile can support the charging power of the electric vehicle currently being charged.

[0033] It can be seen that the oil temperature cooling method is automatically adjusted according to the actual liquid cooling oil temperature. The corresponding cooling method is adopted in different temperature ranges corresponding to different liquid cooling oil temperatures to ensure that the charging needs of the vehicle are met. At the same time, the power consumption of the system is reduced. This not only improves the charging experience for charging users, but also helps to further improve charging efficiency and increase overall operating benefits.

[0034] The following combination Figure 8 Specific examples are given for detailed explanation. The first oil temperature threshold can be set to 40°C, but is not limited to, and the second oil temperature threshold can be set to 60°C, but is not limited to, 40°C.

[0035] First, after the charging station starts charging, the liquid cooling oil temperature is monitored in real time. When the liquid cooling oil temperature reaches the activation condition of the liquid cooling device, the liquid cooling device is activated. After the liquid cooling device is activated, the liquid cooling oil temperature continues to be monitored in real time. When the liquid cooling oil temperature is <40℃, no cooling measures are taken, and the liquid cooling oil temperature is dissipated only by natural air. When the liquid cooling oil temperature is ≥40℃, the liquid cooling oil temperature is overheated, and the cooling device needs to be activated to dissipate the liquid cooling oil temperature. When the liquid cooling oil temperature is ≥40℃ and <60℃, the current charging station output can meet the vehicle's needs, and the only problem is the liquid cooling oil temperature overheating. In this case, the active air cooling device can be used to dissipate the liquid cooling oil temperature. Once activated, if the charging pile output consistently meets the current vehicle's charging needs and the liquid cooling oil temperature is <60℃, the active air cooling system will continue to dissipate heat from the liquid cooling oil. If the liquid cooling oil temperature is ≥60℃ and the charging pile output meets the current vehicle's charging needs, the current air cooling system will continue to dissipate heat. Alternatively, if the liquid cooling oil temperature is ≥60℃ and the charging pile output cannot meet the current vehicle's charging needs due to excessive temperature, water cooling will be used and the condenser will be activated. The temperature of the water cooling water will then be adjusted according to the liquid cooling oil temperature to ensure that the cooling water can quickly remove the oil temperature, thereby ensuring that the charging pile output power can meet the current vehicle's charging needs.

[0036] Figure 9 This is a schematic diagram of the structure of an electronic device 1000 provided in an embodiment of the present invention. For example... Figure 9As shown, the electronic device 1000 includes a memory 1100 and a processor 1200. The number of memories 1100 and processors 1200 can be one or more. Figure 9 Taking a memory 1100 and a processor 1200 as an example; the memory 1100 and the processor 1200 in the device can be connected via a bus or other means. Figure 9 Taking the example of a connection between China and Israel via a bus.

[0037] The memory 1100, as a computer-readable storage medium, can be used to store software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the liquid cooling device operation control method for the charging pile provided in any embodiment of the present invention. The processor 1200 implements the above-mentioned liquid cooling device operation control method for the charging pile by running the software programs, instructions, and modules stored in the memory 1100.

[0038] The memory 1100 may primarily include a program storage area and a data storage area, wherein the program storage area may store the operating system and application programs required for at least one function. Furthermore, the memory 1100 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 1100 may further include memory remotely located relative to the processor 1200, and these remote memories can be connected to the device via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0039] An embodiment of the present invention also provides a computer-readable storage medium storing computer-executable instructions for executing the operation control method of the liquid cooling device of the charging pile as provided in any embodiment of the present invention.

[0040] An embodiment of the present invention also provides a computer program product, including a computer program or computer instructions, which are stored in a computer-readable storage medium. The processor of a computer device reads the computer program or computer instructions from the computer-readable storage medium and executes the computer program or computer instructions, causing the computer device to perform the liquid cooling device operation control method for a charging pile as provided in any embodiment of the present invention.

[0041] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or appropriate combinations thereof.

[0042] In hardware implementations, the division between functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software may be distributed on a computer-readable medium, which may include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0043] The terms “component,” “module,” “system,” etc., used in this specification are used to refer to computer-related entities, hardware, firmware, combinations of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, or a computer. As illustrated, applications running on computing devices and computing devices can both be components. One or more components may reside in a process or execution thread, and components may be located on a single computer or distributed among two or more computers. Furthermore, these components can be executed from various computer-readable media on which various data structures are stored. Components can communicate, for example, via local or remote processes based on signals having one or more data packets (e.g., data from two components interacting with another component between a local system, a distributed system, or a network, such as the Internet interacting with other systems via signals).

Claims

1. A method for controlling the operation of a liquid cooling device in a charging pile, characterized in that, The charging pile is equipped with a first charging gun and a second charging gun. The liquid cooling device includes a first liquid cooling pump, a second liquid cooling pump, a first control valve, a second control valve, and a third control valve. The first liquid cooling pump is connected to the first charging gun through the second control valve, the second liquid cooling pump is connected to the second charging gun through the third control valve, and the first liquid cooling pump is connected to the second liquid cooling pump through the first control valve. The method includes the following steps: Step S1: When the charging application scenario of the first charging gun and the second charging gun is identified, the opening and closing states of the first control valve, the second control valve and the third control valve are controlled according to the charging application scenario and the obtained charging power and temperature of the first charging gun and the second charging gun in the charging application scenario, so as to turn on the first liquid cooling pump and / or the second liquid cooling pump. Step S2: Adjust the real-time rotation speed of the first liquid cooling pump and / or the second liquid cooling pump according to the real-time liquid cooling oil temperature of the liquid cooling device.

2. The operation control method for the liquid cooling device of the charging pile according to claim 1, characterized in that, When the charging application scenario is that the first charging gun and the second charging gun are simultaneously charging an electric vehicle, step S1 includes the following steps: Step S11: When it is detected that the charging power of the first charging gun and the second charging gun in the charging cooperation application scenario both meet the preset first opening condition and the temperature both meet the preset second opening condition, the first control valve is kept in the open state, the second control valve and the third control valve are closed, and the first liquid cooling pump and the second liquid cooling pump are started. Step S12: When it is detected that the charging power of the first charging gun and the second charging gun in the charging cooperation application scenario does not meet the preset first opening condition, and the temperature of the first charging gun in the charging cooperation application scenario meets the preset second opening condition, the third control valve is kept in the open state, and the second control valve is closed. Step S13: When it is detected that the charging power of the second charging gun in the charging application scenario does not meet the preset first opening condition, the temperature does not meet the preset second opening condition, and the temperature of the first charging gun in the charging application scenario is on the rise and the first liquid cooling pump is in full power operation state, the third control valve is kept in the open state, and the first control valve is closed.

3. The operation control method for the liquid cooling device of the charging pile according to claim 1, characterized in that, When the charging application scenario is that the first charging gun and the second charging gun are charging different electric vehicles respectively, step S1 includes the following steps: Step S14: When it is detected that the charging power of the first charging gun and the second charging gun in the charging cooperation application scenario does not meet the preset first opening condition and the temperature does not meet the preset second opening condition, the first control valve, the second control valve and the third control valve are kept in the open state. Step S15: When it is detected that the charging power of the first charging gun in the charging cooperation application scenario meets the preset first opening condition or the temperature meets the preset second opening condition, and the charging power of the second charging gun in the charging cooperation application scenario does not meet the preset first opening condition or the temperature does not meet the preset second opening condition, the first control valve and the third control valve are kept in the open state, the second control valve is closed, and the first liquid cooling pump is started. or, When it is detected that the charging power of the second charging gun in the charging cooperation application scenario meets the preset first opening condition or the temperature meets the preset second opening condition, and the charging power of the first charging gun in the charging cooperation application scenario does not meet the preset first opening condition or the temperature does not meet the preset second opening condition, the first control valve and the second control valve are kept in the open state, the third control valve is closed, and the second liquid cooling pump is started. Step S16: When it is detected that the charging power of the first charging gun and the second charging gun in the charging cooperation application scenario both meet the preset first opening condition or the temperature both meet the preset second opening condition, the first control valve is kept in the open state, and the second control valve and the third control valve are closed.

4. The operation control method for the liquid cooling device of the charging pile according to claim 1, characterized in that, When the charging application scenario is: the first charging gun is charging an electric vehicle and the second charging gun is not charging, step S1 includes the following steps: Step S17: When it is detected that the charging power of the first charging gun in the charging cooperation application scenario does not meet the preset first opening condition and the temperature does not meet the preset second opening condition, the first control valve, the second control valve and the third control valve are kept in the open state. Step S18: When it is detected that the charging power of the first charging gun in the charging cooperation application scenario meets the preset first opening condition or the temperature meets the preset second opening condition, and the reduction of the liquid cooling oil temperature of the liquid cooling device does not meet the preset cooling condition, the first control valve and the third control valve are kept in the open state, the second control valve is closed, and the first liquid cooling pump is started. Step S19: When it is detected that the reduction in the liquid cooling oil temperature by the first liquid cooling pump does not meet the preset cooling condition, the third control valve is kept in the open state, and the first control valve is closed.

5. The operation control method for the liquid cooling device of the charging pile according to claim 1, characterized in that, Step S2 includes the following steps: Step S21: For the real-time liquid cooling oil temperature of the liquid cooling device at each moment, obtain the absolute value of the deviation of the real-time liquid cooling oil temperature from the preset target oil temperature threshold, wherein the target oil temperature threshold corresponding to the real-time liquid cooling oil temperature at different moments is different. Step S22: Using a PID control algorithm and considering the absolute values ​​of the deviations at the previous and current times, adjust the real-time speed of the first liquid cooling pump and / or the second liquid cooling pump at the current time.

6. The operation control method for the liquid cooling device of the charging pile according to claim 5, characterized in that, Step S22 is implemented using the following formula: ； in, The real-time rotational speed of the first liquid cooling pump and / or the second liquid cooling pump at the current moment. The real-time rotational speed of the first liquid cooling pump and / or the second liquid cooling pump at the previous moment. For the preset integral coefficient, For the preset differential coefficients, This is the deviation of the current real-time liquid cooling oil temperature from the corresponding target oil temperature threshold. This is the deviation of the real-time liquid cooling oil temperature at the previous moment from the corresponding target oil temperature threshold.

7. The operation control method for the liquid cooling device of the charging pile according to claim 1, characterized in that, Following step S1, the following steps are also included: Step S3: Based on the relationship between the real-time liquid cooling oil temperature of the liquid cooling device and the preset first oil temperature threshold and second oil temperature threshold, determine the target heat dissipation method for the real-time liquid cooling oil temperature, wherein the first oil temperature threshold is less than the second oil temperature threshold. Step S4: Use the target heat dissipation method to cool down the real-time liquid cooling oil until the real-time output of the charging pile can support the charging power of the electric vehicle currently being charged.

8. The operation control method for the liquid cooling device of the charging pile according to claim 7, characterized in that, The target heat dissipation method includes at least two of the following: Natural air cooling; Fan cooling; Water cooling for heat dissipation.

9. An electronic device, characterized in that, include: At least one processor; At least one memory for storing at least one program; When at least one of the programs is executed by at least one of the processors, the liquid cooling device operation control method for the charging pile as described in any one of claims 1 to 8 is implemented.

10. A computer-readable storage medium, characterized in that, It stores a processor-executable program, which, when executed by the processor, is used to implement the operation control method of the liquid cooling device of the charging pile as described in any one of claims 1 to 8.

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