Charging control method, device and equipment of liquid cooling charging pile and storage medium

Abstract

The invention provides a charging control method and device for a liquid cooling charging pile, equipment and a storage medium, and the method comprises the steps: obtaining a real-time temperature value of a charging gun cable in response to the detection that the charging gun cable charges a battery of a vehicle; the target opening degree grade of the cooling valve is determined based on the real-time temperature value and a preset mapping relation, the target opening degree grade is one of multiple preset opening degree grades, the opening degree values of the cooling valve corresponding to the preset opening degree grades are different, and the mapping relation is used for indicating the mapping relation between the temperature of the charging gun cable and the preset opening degree grades; and the cooling valve is controlled to be opened based on the target opening degree grade. The charging control method of the liquid cooling charging pile can prevent the temperature of the cable of the charging gun from being out of control.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle charging pile equipment, and specifically to a charging control method, device, equipment and storage medium for a liquid-cooled charging pile. Background Art

[0002] At present, as the power of a single charging pile increases, traditional air-cooled charging piles can hardly meet market demand, so charging piles are gradually changing from air cooling to liquid cooling. However, when charging a vehicle through the charging gun cable of a liquid-cooled charging pile, the temperature of the charging gun cable will also change with the change of charging power and charging time. In this process, the charging gun cable will be at risk of temperature out of control due to rapid temperature rise, and may even cause a fire. Summary of the invention

[0003] In view of the above problems, the present application provides a charging control method, device, equipment and storage medium for a liquid-cooled charging pile, which can prevent the temperature of the charging gun cable from getting out of control.

[0004] According to the first aspect of an embodiment of the present application, a charging control method for a liquid-cooled charging pile is provided, wherein the liquid-cooled charging pile comprises a charging gun cable and a cooling valve, wherein the charging gun cable is used to charge a vehicle, and the cooling valve is used to adjust the flow rate of coolant in the charging gun cable, and is characterized in that the method comprises: in response to detecting that the charging gun cable is charging a battery of the vehicle, obtaining a real-time temperature value of the charging gun cable; determining a target opening level of the cooling valve based on the real-time temperature value and a preset mapping relationship, wherein the target opening level is one of a plurality of preset opening levels, and the opening values ​​of the cooling valve corresponding to each of the preset opening levels are different, wherein the preset mapping relationship is used to indicate a mapping relationship between the temperature of the charging gun cable and the preset opening level; and controlling the opening of the cooling valve based on the target opening level.

[0005] In an optional manner, the method also includes: if it is detected that the cooling valve is opened for a preset time based on the target opening level, then obtaining the actual temperature growth rate of the charging gun cable within the preset time; updating the target opening level based on the actual temperature growth rate; wherein, the greater the actual temperature growth rate, the greater the opening value of the updated target opening level.

[0006] In an optional manner, the method also includes: obtaining power change information of the charging gun cable within the preset time period; determining a predicted temperature growth rate based on the power change information; if the difference between the actual temperature growth rate and the predicted temperature growth rate is less than or equal to a preset fluctuation value, updating the target opening level based on the actual temperature growth rate.

[0007] In an optional manner, the method also includes: if the difference between the actual temperature growth rate and the predicted temperature growth rate is greater than the preset fluctuation value, adjusting the actual temperature growth rate based on the predicted temperature growth rate; and updating the target opening level based on the adjusted actual temperature growth rate.

[0008] In an optional manner, the method further includes: obtaining the temperature change difference between the actual temperature growth rate and the preset temperature growth rate; if the temperature change difference is greater than the temperature change threshold, determining the preset opening level with the largest opening value among the multiple preset opening levels as the updated target opening level.

[0009] In an optional manner, the method also includes: if it is detected that the cooling valve is opened based on the target opening level, and the real-time temperature value of the charging gun cable is outside the preset temperature range corresponding to the target opening level, then the preset opening level adjacent to the target opening level is determined as the updated target opening level.

[0010] In an optional manner, the method also includes: if it is detected that the charging gun cable stops charging the battery of the vehicle, obtaining the connection status of the charging gun cable and the vehicle; if the connection status is that the charging gun cable remains connected to the vehicle, and the real-time temperature value of the charging gun cable is greater than the temperature threshold, controlling the cooling valve to open based on the target opening level; and\or, if the connection status is that the charging gun cable is disconnected from the vehicle, and the real-time temperature value of the charging gun cable is greater than the temperature threshold, controlling the cooling valve to close.

[0011] According to a second aspect of an embodiment of the present application, a charging control device for a liquid-cooled charging pile is provided, and the charging control device for the liquid-cooled charging pile includes: an acquisition module, which acquires a real-time temperature value of the charging gun cable in response to detecting that the charging gun cable is charging a battery of a vehicle; a determination module, which determines a target opening level of a cooling valve based on the real-time temperature value, and the target opening level is one of a plurality of preset opening levels; wherein the opening value of the cooling valve corresponding to each of the preset opening levels is different, and the temperature range value of the charging gun cable corresponding to each of the preset opening levels is different; and a control module, which controls the opening of the cooling valve based on the target opening level.

[0012] According to a third aspect of an embodiment of the present application, an electronic device is provided, comprising: a controller vehicle memory, storing one or more programs, and when the one or more programs are executed by the controller, the controller implements the above-mentioned charging control method of the liquid-cooled charging pile.

[0013] According to a fourth aspect of an embodiment of the present application, a computer-readable storage medium is provided, wherein at least one executable instruction is stored in the storage medium. When the executable instruction is executed on a charging control device of a liquid-cooled charging pile, the charging control device of the liquid-cooled charging pile performs the operation of the charging control method of the liquid-cooled charging pile as described above.

[0014] In the present application, after the liquid-cooled charging pile detects that the charging gun cable is charging the vehicle's battery, the real-time temperature value of the charging gun cable can be obtained first, and the target opening level of the cooling valve can be determined based on the real-time temperature value and the preset mapping relationship, so as to control the cooling valve to distribute coolant with a flow rate corresponding to the target opening level to the charging gun cable, thereby cooling the charging gun cable, thereby achieving the purpose of real-time adjustment of the opening value of the cooling valve, and finally accurately controlling the heat dissipation of the charging gun cable to prevent the temperature of the charging gun cable from getting out of control.

[0015] The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are only used to illustrate the embodiments and are not to be considered as limiting the present application. In addition, the same reference symbols are used to represent the same components throughout the accompanying drawings. In the accompanying drawings:

[0017] Figure 1 A diagram showing an implementation environment of a charging control method for a liquid-cooled charging pile provided in an embodiment of the present application is shown.

[0018] Figure 2 A schematic block diagram of the process of S210-230 of a charging control method for a liquid-cooled charging pile provided in an embodiment of the present application is shown.

[0019] Figure 3 A schematic structural diagram of a charging control device for a liquid-cooled charging pile provided in an embodiment of the present application is shown.

[0020] Figure 4 It is a structural diagram of a computer system of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0021] Here, exemplary embodiments will be described in detail, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0022] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0023] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0024] The term "multiple" as used in this application refers to two or more than two. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0025] Generally speaking, when the vehicle 110 is charged through the charging gun cable of the liquid-cooled charging pile 120, the temperature of the charging gun cable will also change with the change of charging power and charging time. Therefore, there is a risk that the charging gun cable will be out of control due to the rapid temperature rise, and may even cause a fire.

[0026] Based on this, combined Figures 1 to 3 As shown, this embodiment provides a charging control method for a liquid-cooled charging pile 120, which can adjust the opening value of the cooling valve in real time to achieve on-demand distribution of coolant and accurately control the heat dissipation of the charging gun cable to prevent the temperature of the charging gun cable from getting out of control.

[0027] In an exemplary embodiment of the present application, the liquid-cooled charging pile 120 is to set a special liquid circulation channel between the charging gun cable and the charging gun, add coolant into the channel, and promote the coolant circulation through a power pump, so as to bring out the heat generated during the charging process. Among them, since the coolant is driven by the water pump in the liquid cooling circulation system to circulate the liquid, it can also cool the electrical equipment inside the charging gun of the charging pile 120, reduce the temperature, ensure the stability and life of the equipment, and finally extend from the charging pile 120 to the charging gun cable and connector, realizing the low-temperature operation of the entire charging system.

[0028] For example, the charging gun cable structure using water + refrigerant medium is to place a corresponding number of liquid cooling pipes separately next to the DC+ / DC (power module)-wire, while the charging gun cable structure using insulating oil medium is to place the liquid cooling tube inside or outside the DC+ / DC-wire core to take away the heat from the copper conductor.

[0029] Figure 1 The implementation environment diagram of a charging control method of a liquid-cooled charging pile 120 provided in an embodiment of the present application is shown, combined with Figure 1 As shown, the liquid cooling system of the liquid-cooled charging pile 120 is mainly composed of a water pump, a cooling valve, an electronic fan, a heat exchanger, and a high-temperature resistant water pipe. The high-temperature resistant water pipe is provided with a coolant for heat exchange with the charging gun cable. The cooling valve is used to adjust the flow of the coolant in the charging gun cable. The water pump adjusts the flow of the coolant in the high-temperature resistant water pipe according to the temperature requirement of the charging gun cable, so that the coolant flow reaches the target requirement, and finally realizes the heat exchange of the charging gun cable of the charging pile 120.

[0030] In an exemplary embodiment of the present application, after the charging gun cable of the liquid-cooled charging pile 120 is electrically connected to the charging interface of the vehicle 110 and the vehicle 110 is charged, the controller of the liquid-cooled charging pile 120 can control the water pump to start and open the cooling valve so that the coolant starts to circulate in the charging gun cable to perform heat exchange when flowing through the heat exchanger.

[0031] The method proposed in the embodiment of the present application will be described in detail below using the controller of the liquid-cooled charging pile 120 as an exemplary execution entity. Figure 2 A schematic flow chart of steps S210-240 of a charging control method for a liquid-cooled charging pile 120 provided in an embodiment of the present application is shown. Figure 2 As shown, in an exemplary embodiment of the present application, the method includes steps S210 to S230, which are described in detail as follows:

[0032] Step S210: In response to detecting that the charging gun cable is charging the battery of the vehicle 110 , obtaining a real-time temperature value of the charging gun cable.

[0033] For example, the charging gun cable of the liquid-cooled charging pile 120 is electrically connected to the charging interface of the vehicle 110. After charging the vehicle 110, the real-time temperature value of the charging gun cable can be continuously obtained through the temperature sensor installed on the charging gun cable, and the obtained real-time temperature is sent to the controller of the liquid-cooled charging pile 120, and finally processed by the controller of the liquid-cooled charging pile 120.

[0034] Step S220: Determine the target opening level of the cooling valve based on the real-time temperature value and the preset mapping relationship, where the target opening level is one of multiple preset opening levels; wherein the opening values ​​of the cooling valve corresponding to each preset opening level are different, and the temperature range values ​​of the charging gun cable corresponding to each preset opening level are different.

[0035] In an exemplary embodiment of the present application, a preset mapping relationship is used to indicate the mapping relationship between the temperature of the charging gun cable and the preset opening level. For example, the preset mapping relationship includes the opening level of the cooling valve, and a mapping table formed by the temperature range and opening coefficient corresponding to the opening level. For example, in the mapping table, multiple preset opening levels can be a first-level preset opening, a second-level preset opening, a third-level preset opening, and a fourth-level preset opening. The first-level preset opening corresponds to an opening coefficient of 0.3 for the cooling valve; the second-level preset opening corresponds to an opening coefficient of 0.5 for the cooling valve; the third-level preset opening corresponds to an opening coefficient of 0.8 for the cooling valve; and the fourth-level preset opening corresponds to an opening coefficient of 1 for the cooling valve. Among them, when the temperature of the charging gun cable is less than 20℃, the corresponding preset opening level is the first-level preset opening; when the temperature range value of the charging gun cable is: 20℃≤the temperature of the charging gun cable≤32℃, the corresponding preset opening level is the second-level preset opening; when the temperature range value of the charging gun cable is: 32℃≤the temperature of the charging gun cable≤65℃, the corresponding preset opening level is the third-level preset opening; when the temperature range value of the charging gun cable is: 65℃≤the temperature of the charging gun cable≤77℃, the corresponding preset opening level is the fourth-level preset opening.

[0036] It should be understood that the opening value of the cooling valve is equal to the maximum opening value of the cooling valve multiplied by the opening coefficient.

[0037] For example, when determining the target opening level of the cooling valve based on the real-time temperature value, if the real-time temperature value is 18°C, the target opening level of the cooling valve is determined to be the first-level preset opening; if the real-time temperature value is 28°C, the target opening level of the cooling valve is determined to be the second-level preset opening. And so on.

[0038] Step S230: Controlling the opening of the cooling valve based on the target opening level to achieve the purpose of adjusting the opening value of the cooling valve in real time and realizing the distribution of the coolant on demand.

[0039] It should be understood that after the liquid-cooled charging pile 120 detects that the charging gun cable is charging the battery of the vehicle 110, the real-time temperature value of the charging gun cable can be obtained first, and the target opening level of the cooling valve can be determined based on the real-time temperature value and the preset mapping relationship, so as to control the cooling valve to distribute coolant with a flow rate corresponding to the target opening level to the charging gun cable, thereby cooling the charging gun cable, thereby achieving the purpose of real-time adjustment of the opening value of the cooling valve, and finally accurately controlling the heat dissipation of the charging gun cable to prevent the temperature of the charging gun cable from getting out of control.

[0040] In an exemplary embodiment of the present application, after controlling the opening of the cooling valve based on the target opening level, the charging control method of the liquid-cooled charging pile 120 also includes: if it is detected that the cooling valve is opened based on the target opening level, and the real-time temperature value of the charging gun cable is outside the preset temperature range corresponding to the target opening level, then the preset opening level adjacent to the target opening level is determined as the updated target opening level.

[0041] It should be understood that the real-time temperature value of the charging gun cable will change during the charging process of the vehicle 110 by the liquid-cooled charging pile 120. Therefore, after the cooling valve is opened based on the target opening level, and after each preset time interval, it is necessary to re-judge whether the real-time temperature value of the charging gun cable is within the preset temperature range corresponding to the target opening level, so as to decide whether to update the target opening level. Among them, the preset time can be set according to the user's choice. Optionally, the preset time is 30S, 60S or 90S, etc.

[0042] For example, if the target opening level is the second-level preset opening, at this time, if the real-time temperature value of the charging gun cable is greater than the maximum value in the preset temperature range corresponding to the target opening level, the third-level preset opening is determined as the updated target opening level; correspondingly, if the real-time temperature value of the charging gun cable is less than the minimum value in the preset temperature range corresponding to the target opening level, the first-level preset opening is determined as the updated target opening level. If the target opening level is the third-level preset opening, at this time, if the real-time temperature value of the charging gun cable is greater than the maximum value in the preset temperature range corresponding to the target opening level, the fourth-level preset opening is determined as the updated target opening level; correspondingly, if the real-time temperature value of the charging gun cable is less than the minimum value in the preset temperature range corresponding to the target opening level, the second-level preset opening is determined as the updated target opening level, and so on.

[0043] It should be understood that, generally speaking, when the charging gun cable charges the battery of the vehicle 110, as the charging power of the vehicle 110 gradually increases and the charging time continues, the heat generated by the charging gun cable increases, which in turn causes the temperature of the charging gun cable to rise, and the temperature of the coolant gradually increases. Therefore, a preset opening level adjacent to the target opening level (generally a preset opening level where the opening value of the cooling valve is greater than the opening value of the cooling valve corresponding to the target opening level) can be determined as the updated target opening level, and then the opening value of the cooling valve is gradually increased, so that the coolant can be distributed on demand and energy consumption can be reduced.

[0044] In an exemplary embodiment of the present application, after the cooling valve is controlled to open based on the target opening level, the charging control method of the liquid-cooled charging pile 120 further includes: if it is detected that the cooling valve is opened for a preset time based on the target opening level, the actual temperature growth rate of the charging gun cable within the preset time is obtained, and the target opening level is updated based on the actual temperature growth rate. The greater the actual temperature growth rate, the greater the opening value of the updated target opening level.

[0045] It should be understood that, as the liquid-cooled charging pile 120 is charging the vehicle 110, the real-time temperature value of the charging gun cable will change. Therefore, after the cooling valve is opened based on the target opening level, and after each preset time interval, the actual temperature growth rate is obtained to predict whether the next real-time temperature value of the charging gun cable is within the preset temperature range corresponding to the target opening level, so as to predict in advance whether the target opening level needs to be updated. Among them, the preset time can be set according to the user's choice. Optionally, the preset time is 30S, 60S or 90S, etc. In addition, when updating the target opening level based on the actual temperature growth rate, it can be combined with the real-time temperature value of the charging gun cable, or the target opening level can be updated based only on the actual temperature growth rate.

[0046] For example, when updating the target opening level based only on the actual temperature growth rate, if the cooling valve is based on the first-level preset opening as the target opening level, and after being opened for a preset time, the actual temperature growth rate of the charging gun cable within the preset time is greater than the preset temperature growth rate, then the third-level preset opening or the fourth-level preset opening can be directly used as the updated target opening level. In addition, when updating the target opening level in combination with the real-time temperature value and the actual temperature growth rate of the charging gun cable, if the cooling valve is based on the first-level preset opening as the target opening level, and after being opened for a preset time, if the real-time temperature value of the charging gun cable is within the preset temperature range corresponding to the target opening level, and the actual temperature growth rate of the charging gun cable within the preset time is greater than the preset temperature growth rate, then the third-level preset opening or the fourth-level preset opening can be directly used as the updated target opening level.

[0047] For example, if the cooling valve is based on the first-level preset opening as the target opening level, and after being opened for a preset time, the actual temperature growth rate of the charging gun cable within the preset time is less than or equal to the preset temperature growth rate, then the second-level preset opening can be directly used as the updated target opening level, and then the opening value of the cooling valve can be gradually increased to achieve on-demand distribution of coolant and reduce energy consumption.

[0048] It should be understood that if the actual temperature growth rate is larger (for example, larger than the preset temperature growth rate of each preset opening level), the preset opening level with a larger opening value of the cooling valve can be directly determined as the target opening level. In this case, there is no need to first determine the preset opening level that is most adjacent to the target opening level as the updated target opening level.

[0049] In an exemplary embodiment of the present application, the method further includes the following steps before updating the target opening level based on the actual temperature growth rate: obtaining the power change information of the charging gun cable within a preset time period; determining the predicted temperature growth rate based on the power change information; if the difference between the actual temperature growth rate and the predicted temperature growth rate is less than or equal to the preset fluctuation value, updating the target opening level based on the actual temperature growth rate. The preset fluctuation value can be set by the user or obtained after calibration.

[0050] It should be understood that in the process of charging the battery of the vehicle 110 through the charging gun cable, the charging power of the charging gun cable will change with the remaining battery capacity of the vehicle 110 under certain circumstances, and correspondingly, the actual temperature growth rate of the charging gun cable will also change. Therefore, the power change information of the charging gun cable has a certain correlation with the actual temperature growth rate of the charging gun cable. Therefore, the power change information of the charging gun cable within the preset time can be obtained to determine the predicted temperature growth rate of the charging gun cable within the preset time, and then compared with the actual temperature growth rate of the charging gun cable within the preset time collected by the temperature sensor, and then verify whether the actual temperature growth rate obtained by the temperature sensor is accurate. Among them, if the difference between the actual temperature growth rate and the predicted temperature growth rate is less than or equal to the preset fluctuation value, it means that the actual temperature growth rate obtained by the temperature sensor is basically accurate, and the target opening level can be directly updated by the actual temperature growth rate.

[0051] At least, the charging power of the charging gun cable will have a large power change when the remaining battery power of the vehicle 110 increases from 19% to 21%. In addition, the charging power of the charging gun cable will also have a large power change when the remaining battery power of the vehicle 110 increases from 79% to 81%.

[0052] Therefore, in the above two large power change situations, if the flow of the cooling valve is a fixed amount, and the power change information of the charging gun cable obtained within the preset time period happens to include one of the above two large power change situations. Then, the power of the charging gun cable obtained within the preset time period is likely to increase or decrease sharply. At this time, if the difference between the actual temperature growth rate and the predicted temperature growth rate is less than or equal to the preset fluctuation value, it means that the actual temperature growth rate obtained by the temperature sensor is likely to be accurate, and the target opening level can be directly updated based on the actual temperature growth rate.

[0053] In an exemplary embodiment of the present application, the method further includes the following steps before updating the target opening level based on the actual temperature growth rate: if the difference between the actual temperature growth rate and the predicted temperature growth rate is greater than a preset fluctuation value, adjusting the actual temperature growth rate based on the predicted temperature growth rate; and updating the target opening level based on the adjusted actual temperature growth rate.

[0054] It should be understood that during the charging process of the vehicle 110, the power change will basically increase with the increase of the power, and it is generally difficult to have errors. Therefore, if the difference between the actual temperature growth rate and the predicted temperature growth rate is greater than the preset fluctuation value, it means that the actual temperature growth rate obtained by the temperature sensor may be inaccurate (for example, the temperature sensor is faulty). At this time, the actual temperature growth rate can also be adjusted by the predicted temperature growth rate, and then the target opening level is updated based on the adjusted actual temperature growth rate, and finally the accuracy of the updated target opening level is guaranteed.

[0055] For example, the average of the predicted temperature growth rate and the actual temperature growth rate can be taken as the target temperature growth rate, and then the target temperature growth rate is used as the adjusted actual temperature growth rate to update the target opening level. Alternatively, the actual temperature growth rate can be adjusted according to the predicted temperature growth rate combined with the ambient temperature growth rate of the charging cable 121 and the temperature growth rate taken away by the coolant flow to obtain the target temperature growth rate, and finally the target temperature growth rate is used as the adjusted actual temperature growth rate to update the target opening level.

[0056] In an exemplary embodiment of the present application, the method for updating the target opening level based on the actual temperature growth rate includes: obtaining the temperature change difference between the actual temperature growth rate and the preset temperature growth rate; if the temperature change difference is greater than the temperature change threshold, determining the preset opening level with the largest opening value among multiple preset opening levels as the updated target opening level, wherein the preset temperature growth rate can be set by the user, and the temperature change threshold is greater than 0.

[0057] It should be understood that if the temperature change difference between the actual temperature growth rate and the preset temperature growth rate is greater than the temperature change threshold, it means that the temperature of the current charging gun cable has increased sharply and has reached the limit of the temperature growth rate. It is necessary to use the preset opening level with the largest opening value of the cooling valve as the updated target opening level, and then quickly cool down the current charging gun cable to avoid fire. If the temperature change difference is less than the temperature change threshold and greater than 0, it means that although the temperature of the current charging gun cable has increased sharply, it has not reached the limit of the temperature growth rate. According to the size of the actual temperature growth rate, one of the multiple preset opening levels can be selectively used as the updated target opening level.

[0058] In addition, if the actual temperature growth rate is negative, it means that the temperature of the current charging gun cable begins to drop. At this time, the opening value of the cooling valve can be reduced and the target opening level of the corresponding temperature can be determined.

[0059] In an exemplary embodiment of the present application, if it is detected that the cooling valve is opened based on the target opening level and is opened for a preset time, and the real-time temperature value of the charging gun cable is within the preset temperature range corresponding to the target opening level, the preset opening level corresponding to the current target opening level is updated to the target opening level for the next preset time.

[0060] In an exemplary embodiment of the present application, during the charging process of the vehicle 110, the temperature of the charging gun cable gradually increases when the heat exchange is not performed through the coolant; after the heat exchange is performed through the coolant, the temperature of the charging gun cable will basically change within a period of time, and the valve opening value of the cooling valve will also change accordingly, so the preset opening level of the updated target opening level will also change accordingly. Therefore, if it is detected that when the target opening level is updated, the same preset opening level is used as the updated target opening level for multiple consecutive times, it is necessary to rule out whether there is a fault in the entire charging process of the liquid-cooled charging pile 120, so as to avoid a fire caused by a fault in the liquid-cooled charging pile 120.

[0061] For example, if it is detected that when updating the target opening level, the same preset opening level is used as the updated target opening level for many consecutive times, then the actual temperature growth rate obtained by the temperature sensor and the corresponding real-time temperature can be checked based on the difference between the actual temperature growth rate and the predicted temperature growth rate. If it is inaccurate, it means that the temperature sensor is faulty, which leads to the same preset opening level being used as the updated target opening level for many consecutive times.

[0062] For example, if it is detected that when updating the target opening level, the preset opening level with the largest opening value of the cooling valve is used as the updated target opening level for many consecutive times, then the actual temperature growth rate obtained by the temperature sensor and the corresponding real-time temperature can also be checked based on the difference between the actual temperature growth rate and the predicted temperature growth rate. If it is inaccurate, it means that the temperature sensor is faulty, which leads to the same preset opening level being used as the updated target opening level for many consecutive times; if it is accurate, it means that the liquid-cooled charging pile 120 may be faulty and charging needs to be terminated immediately.

[0063] In addition, after the charging gun cable stops charging the battery of the vehicle 110, it is necessary to further control the opening and closing of the cooling valve to cool the charging gun cable. Based on this, the charging control method of the liquid-cooled charging pile 120 also includes: if it is detected that the charging gun cable stops charging the battery of the vehicle 110, the connection status of the charging gun cable and the vehicle 110 is obtained to determine whether the charging gun is unplugged from the vehicle 110. If the connection status is that the charging gun cable remains connected to the vehicle 110, and the real-time temperature value of the charging gun cable is greater than the temperature threshold, the cooling valve is controlled to open based on the target opening level.

[0064] Optionally, the temperature threshold may be 20°C.

[0065] It should be understood that if the vehicle 110 stops charging and the charging gun is not unplugged, it can continue to dissipate heat according to the target opening level corresponding to the real-time temperature (T>20°C) until the temperature reaches below 20°C, then close the cooling valve, and the coolant in the charging gun cable flows back to the heat exchanger to dissipate heat, so that the charging cable 121 can be cooled naturally.

[0066] In an exemplary embodiment of the present application, the charging control method of the liquid-cooled charging pile 120 also includes: if the connection state is that the charging gun cable is disconnected from the vehicle 110, and the real-time temperature value of the charging gun cable is greater than the temperature threshold, the cooling valve is controlled to be closed.

[0067] It should be understood that if the vehicle 110 stops charging and the charging gun is unplugged, even if the temperature is greater than 20°C, the cooling valve can be closed, so that the coolant in the charging cable 121 flows back to the heat exchanger to dissipate heat, and the charging cable 121 cools naturally.

[0068] In summary, after the liquid-cooled charging pile 120 detects that the charging gun cable is charging the battery of the vehicle 110, the real-time temperature value of the charging gun cable can be obtained first, and the target opening level of the cooling valve can be determined based on the real-time temperature value and the preset mapping relationship, so as to control the cooling valve to distribute the coolant corresponding to the target opening level to the charging gun cable, thereby cooling the charging gun cable, and achieving the purpose of adjusting the opening value of the cooling valve in real time. Among them, after the cooling valve is controlled to open based on the target opening level, not only can the target opening level be updated according to the real-time temperature value when the real-time temperature value is outside the preset temperature range corresponding to the target opening level; after the cooling valve is controlled to open based on the target opening level, the target opening level can be updated according to the actual temperature growth rate of the charging gun cable, thereby accurately controlling the heat dissipation of the charging gun cable and preventing the temperature of the charging gun cable from getting out of control.

[0069] Figure 3 FIG. 1 is a schematic diagram showing the structure of a charging control device 300 for a liquid-cooled charging pile 120 provided in an embodiment of the present application. Figure 3 As shown, in this embodiment, a charging control device 300 for a liquid-cooled charging pile 120 is also provided to execute the charging control method for the liquid-cooled charging pile 120 in the above-mentioned embodiment.

[0070] The charging control device 300 of the liquid-cooled charging pile 120 includes an acquisition module 310 , and the acquisition module 310 acquires the real-time temperature value of the charging gun cable in response to detecting that the charging gun cable is charging the battery of the vehicle 110 .

[0071] The charging control device 300 of the liquid-cooled charging pile 120 also includes a determination module 320, which determines a target opening level of the cooling valve based on a real-time temperature value, and the target opening level is one of a plurality of preset opening levels; wherein the opening values ​​of the cooling valves corresponding to each preset opening level are different, and the temperature range values ​​of the charging gun cables corresponding to each preset opening level are different.

[0072] The charging control device 300 of the liquid-cooled charging pile 120 further includes a control module 340 , which controls the opening of the cooling valve based on the target opening level.

[0073] It should be noted that the charging control device 300 of the liquid-cooled charging pile 120 provided in the above embodiment and the charging control method of the liquid-cooled charging pile 120 provided in the above embodiment belong to the same concept, and the specific manner in which each module and unit performs the operation has been described in detail in the method embodiment and will not be repeated here.

[0074] Another aspect of the present application also provides an electronic device, including: a controller vehicle 110 memory, storing one or more programs, when the one or more programs are executed by the controller, to execute the above-mentioned charging control method of the liquid-cooled charging pile 120.

[0075] The present application also provides a computer-readable storage medium on which computer-readable instructions are stored. When the computer-readable instructions are executed by a processor of a computer, the computer executes the above-mentioned charging control method of the liquid-cooled charging pile 120.

[0076] See also Figure 4 , Figure 4 1 is a schematic diagram of the structure of the computer system of the electronic device of the embodiment of the present application. It shows a schematic diagram of the structure of the computer system of the electronic device suitable for implementing the embodiment of the present application.

[0077] It should be noted that Figure 4 The computer system 400 of the electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0078] like Figure 4As shown, the computer system 400 includes a central processing unit (CPU) 401, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 402 or the program loaded from the storage part 408 to the random access memory (RAM) 403, such as executing the method in the above embodiment. In the RAM 403, various programs and data required for system operation are also stored. The CPU 401, ROM 402 and RAM 403 are connected to each other through a bus 404. An input / output (I / O) interface 405 is also connected to the bus 404. The following components are connected to the I / O interface 405: an input section 406 including a keyboard, a mouse, etc., an output section 407 including a storage section 408 including a hard disk, etc., and a communication section 409 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 409 performs communication processing via a network such as the Internet. A drive 410 is also connected to the I / O interface 405 as needed. A removable medium 411, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 410 as needed so that a computer program read therefrom is installed into the storage section 408 as needed.

[0079] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a computer program for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication section 409, and / or installed from a removable medium 411. When the computer program is executed by a central processing unit (CPU) 401, various functions defined in the system of the present application are executed.

[0080] It should be noted that the computer-readable medium shown in the embodiment of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it. In the present application, a computer-readable signal medium can include a data signal propagated in a baseband or as a part of a carrier wave, wherein a computer-readable computer program is carried. This propagated data signal can take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. The computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program used by or in combination with an instruction execution system, device, or device. The computer program contained on the computer-readable medium can be transmitted by any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above. The flowcharts and block diagrams in the accompanying drawings illustrate the possible implementation architecture, functions, and operations of the systems, methods, and computer program products according to various embodiments of the present application. Among them, each box in the flowchart or block diagram can represent a module, a program segment, or a part of the code, and the above module, program segment, or a part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order than the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each block in the block diagrams or flowcharts, and combinations of blocks in the block diagrams or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0081] The units involved in the embodiments described in this application may be implemented by software or hardware, and the units described may also be set in a processor. The names of these units do not constitute limitations on the units themselves in some cases.

[0082] Another aspect of the present application further provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the charging control method of the liquid-cooled charging pile 120 as described above is implemented. The computer-readable storage medium may be included in the electronic device described in the above embodiment, or may exist independently without being assembled into the electronic device.

[0083] Another aspect of the present application further provides a computer program product or computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the charging control method of the liquid-cooled charging pile 120 provided in each of the above embodiments.

[0084] According to one aspect of an embodiment of the present application, a computer system is also provided, including a central processing unit (CPU), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) or a program loaded from a storage portion into a random access memory (RAM), such as executing the method in the above embodiment. In RAM, various programs and data required for system operation are also stored. CPU, ROM and RAM are connected to each other via a bus. An input / output (I / O) interface is also connected to the bus.

[0085] The following components are connected to the I / O interface: an input part including a keyboard, a mouse, etc., an output part including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc., a storage part including a hard disk, etc., and a communication part including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication part performs communication processing via a network such as the Internet. A drive is also connected to the I / O interface as needed. Removable media, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., are installed on the drive as needed so that the computer program read therefrom is installed into the storage part as needed.

[0086] The above content is only a preferred exemplary embodiment of the present application and is not intended to limit the implementation scheme of the present application. A person skilled in the art can easily make corresponding changes or modifications based on the main concept and spirit of the present application. Therefore, the scope of protection of the present application shall be based on the scope of protection required by the claims.

Claims

1. A charging control method for a liquid-cooled charging pile, wherein the liquid-cooled charging pile comprises a charging gun cable and a cooling valve, wherein the charging gun cable is used to charge a vehicle, and the cooling valve is used to adjust the flow of coolant in the charging gun cable, wherein: The method comprises: In response to detecting that the charging gun cable is charging the battery of the vehicle, obtaining a real-time temperature value of the charging gun cable; Determine the target opening level of the cooling valve based on the real-time temperature value and the preset mapping relationship, the target opening level is one of a plurality of preset opening levels, and the opening values ​​of the cooling valve corresponding to each preset opening level are different, wherein the preset mapping relationship is used to indicate the mapping relationship between the temperature of the charging gun cable and the preset opening level; The cooling valve is controlled to open based on the target opening level.

2. The method according to claim 1, characterized in that The method further comprises: If it is detected that the cooling valve is opened for a preset time based on the target opening level, the actual temperature increase rate of the charging gun cable within the preset time is obtained; The target opening level is updated based on the actual temperature growth rate; wherein, the greater the actual temperature growth rate, the greater the opening value of the updated target opening level.

3. The method according to claim 2, characterized in that The method further comprises: Obtaining power change information of the charging gun cable within the preset time period; Determining a predicted temperature growth rate based on the power change information; If the difference between the actual temperature growth rate and the predicted temperature growth rate is less than or equal to a preset fluctuation value, the target opening level is updated based on the actual temperature growth rate.

4. The method according to claim 2, characterized in that The method further comprises: If the difference between the actual temperature growth rate and the predicted temperature growth rate is greater than the preset fluctuation value, adjusting the actual temperature growth rate based on the predicted temperature growth rate; The target opening level is updated based on the adjusted actual temperature increase rate.

5. The method according to claim 2, characterized in that The method further comprises: Obtaining a temperature change difference between the actual temperature growth rate and a preset temperature growth rate; If the temperature change difference is greater than the temperature change threshold, the preset opening level with the largest opening value among the plurality of preset opening levels is determined as the updated target opening level.

6. The method according to claim 1, characterized in that The method further comprises: If it is detected that the cooling valve is opened based on the target opening level, and the real-time temperature value of the charging gun cable is outside the preset temperature range corresponding to the target opening level, the preset opening level adjacent to the target opening level is determined as the updated target opening level.

7. The method according to claim 1, characterized in that The method further comprises: If it is detected that the charging gun cable stops charging the battery of the vehicle, obtaining the connection status between the charging gun cable and the vehicle; If the connection state is that the charging gun cable remains connected to the vehicle, and the real-time temperature value of the charging gun cable is greater than the temperature threshold, the cooling valve is controlled to open based on the target opening level; and\or, If the connection status is that the charging gun cable is disconnected from the vehicle, and the real-time temperature value of the charging gun cable is greater than the temperature threshold, the cooling valve is controlled to be closed.

8. A charging control device for a liquid-cooled charging pile, characterized in that: The charging control device of the liquid-cooled charging pile comprises: an acquisition module, in response to detecting that the charging gun cable is charging the battery of the vehicle, acquiring a real-time temperature value of the charging gun cable; A determination module, which determines a target opening level of the cooling valve based on the real-time temperature value, wherein the target opening level is one of a plurality of preset opening levels; wherein the opening values ​​of the cooling valve corresponding to each of the preset opening levels are different, and the temperature range values ​​of the charging gun cable corresponding to each of the preset opening levels are different; A control module controls the cooling valve to open based on the target opening level.

9. An electronic device, characterized in that: include: Controller; A memory stores one or more programs. When the one or more programs are executed by the controller, the controller implements the charging control method for the liquid-cooled charging pile according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The storage medium stores at least one executable instruction. When the executable instruction is executed on the charging control device of the liquid-cooled charging pile, the charging control device of the liquid-cooled charging pile performs the operation of the charging control method of the liquid-cooled charging pile as described in any one of claims 1-7.

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