Charging control method and device and storage medium

Abstract

The invention discloses a charging control method and device and a storage medium, the charging control method is applied to a vehicle-mounted charging system, and the vehicle-mounted charging system comprises a vehicle-mounted charger and a battery; the charging control method comprises the steps that the current temperature of a target device is obtained in response to the situation that a vehicle is in a static state and a vehicle-mounted charger is in a working state; in response to the situation that the current temperature of the target device is located outside the optimal temperature interval of the target device, a first target opening value of the active air inlet grille is determined based on the current temperature of the target device; and the opening degree of the active air inlet grille is controlled to be the first target opening degree value, so that the current temperature of the target device is adjusted to be within the optimal temperature interval of the target device. Wherein the target device comprises at least one of a vehicle-mounted charger and a battery. In this way, the charging efficiency of the vehicle can be improved.

Description

Technical Field

[0001] The present application relates to the field of new energy vehicle technology, and in particular to a charging control method, device and storage medium. Background Art

[0002] With the rapid development of new energy vehicles, the ownership and usage rate of household new energy vehicles are also increasing rapidly. New energy vehicles generally need to be charged by connecting to charging piles. If the charging efficiency is low, on the one hand, it will increase the power loss during the charging process and increase the user's car cost. On the other hand, the vehicle charging time is long, which affects the user's car experience.

[0003] Therefore, how to improve the charging efficiency of vehicles has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] The main technical problem solved by the present application is to provide a charging control method, an electronic device and a computer-readable storage medium, which can improve the charging efficiency of a vehicle.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide a charging control method, applied to an on-board charging system, the on-board charging system including an on-board charger and a battery; the method includes: in response to the vehicle being in a stationary state and the on-board charger being in a working state, obtaining the current temperature of the target device; in response to the current temperature of the target device being outside the optimal temperature range of the target device, determining a first target opening value of the active air intake grille based on the current temperature of the target device; controlling the opening of the active air intake grille to be the first target opening value to adjust the current temperature of the target device to be within the optimal temperature range of the target device; wherein, the target device includes at least one of the on-board charger and the battery.

[0006] Optionally, the first device is one of the on-board charger and the battery, the second device is the other of the on-board charger and the battery, and the target device is the first device; the first target opening value of the active air intake grille is determined based on the current temperature of the target device, including: if at least one of the following conditions is met, the first target opening value is determined to be a first preset opening value: the current temperature of the first device is less than the lower limit value of the first optimal temperature range of the first device, and the current temperature of the second device is less than the lower limit value of the second optimal temperature range of the second device; if the current temperature of the first device is greater than the upper limit value of the first optimal temperature range, and the current temperature of the second device is greater than or equal to the lower limit value of the second optimal temperature range, the first target opening value is determined to be the second preset opening value; wherein the first preset opening value is less than the second preset opening value.

[0007] Optionally, the on-board charging system also includes a multi-way valve and a first water pump, and the first device, the second device and the first water pump are connected in series between the first port of the multi-way valve and the second port of the multi-way valve; the method also includes: when the current temperature of the first device is less than the lower limit of the first optimal temperature range, if the current temperature of the first device is less than the lower limit of the second optimal temperature range, and the current temperature of the second device is greater than the upper limit of the second optimal temperature range, then the first port of the multi-way valve is controlled to be connected with the second port of the multi-way valve so that the second device heats the first device; and / or, when the current temperature of the first device is greater than the upper limit of the first optimal temperature range of the first device, if the current temperature of the second device is less than the lower limit of the second optimal temperature range, then the first port of the multi-way valve is controlled to be connected with the second port of the multi-way valve so that the first device heats the second device.

[0008] Optionally, the first device is a vehicle charger, and the second device is a battery.

[0009] Optionally, a first target opening value of the active air intake grille is determined based on the current temperature of the target device, including: if the current temperature of the target device is less than the lower limit value of the optimal temperature range, the first target opening value is determined to be a first preset opening value; if the current temperature of the target device is greater than the upper limit value of the optimal temperature range, the first target opening value is determined to be a second preset opening value; wherein the first preset opening value is less than the second preset opening value.

[0010] Optionally, the method further includes: in response to the current temperature of the target device being within the optimal temperature range of the target device, determining a second target opening value of the active air intake grille based on the current ambient temperature; and controlling the opening of the active air intake grille to be the second target opening value.

[0011] Optionally, after controlling the opening of the active air intake grille to be a first target opening value, the method also includes: determining whether the current temperature of the target device reaches the target temperature; wherein the target temperature is greater than or equal to the lower limit value of the optimal temperature range and less than or equal to the upper limit value of the optimal temperature range; if the current temperature of the target device does not reach the target temperature, maintaining the opening of the active air intake grille to be the first target opening value; if the current temperature of the target device reaches the target temperature, determining the second target opening value of the active air intake grille based on the current ambient temperature, and controlling the opening of the active air intake grille to be the second target opening value.

[0012] Optionally, the second target opening value of the active air intake grille is determined based on the current ambient temperature, including: if the current ambient temperature is less than the first temperature threshold, the second target opening value is determined to be a third preset opening value; if the current ambient temperature is greater than the second temperature threshold, the second target opening value is determined to be a fourth preset opening value; if the current ambient temperature is greater than or equal to the first temperature threshold and less than or equal to the second temperature threshold, the second target opening value is determined based on the current ambient temperature, the current temperature of the target device and a first mapping relationship; wherein the third preset opening value is less than the fourth preset opening value, and the first mapping relationship is a mapping relationship between the ambient temperature, the target device temperature and the opening of the active air intake grille.

[0013] To solve the above technical problems, another technical solution adopted in the present application is: to provide an electronic device, comprising a memory and a processor coupled to each other, the memory storing program instructions; the processor is used to execute the program instructions stored in the memory to implement the above charging control method.

[0014] In order to solve the above technical problems, another technical solution adopted in the present application is: providing a computer-readable storage medium, which is used to store program instructions, and the program instructions can be executed by a processor to implement the above charging control method.

[0015] In the above scheme, when the vehicle is stationary and the on-board charger is in operation, when the current temperature of the target device is outside the optimal temperature range of the target device, the first target opening value of the active air intake grille is determined based on the current temperature of the target device, and the opening of the active air intake grille is controlled to be the first target opening value to adjust the current temperature of the target device to be within the optimal temperature range of the target device. The target device includes at least one of the on-board charger and the battery. That is, when the vehicle is in a slow charging condition, the current temperature of at least one of the on-board charger and the battery is quickly brought to the corresponding optimal temperature range by controlling the opening of the active air intake grille, thereby improving the charging efficiency of the on-board charger and / or the battery, and thereby improving the charging efficiency of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a flow chart of an embodiment of a charging control method provided by the present application;

[0017] Figure 2 is a schematic diagram of the optimal temperature range of the on-board charger provided by the present application;

[0018] Figure 3 is a schematic diagram of the optimal temperature range of the battery provided in this application;

[0019] Figure 4 is a flow chart of another embodiment of the charging control method provided by the present application;

[0020] Figure 5 It is a structural schematic diagram of an embodiment of a vehicle-mounted charging system provided by the present application;

[0021] Figure 6 is a structural schematic diagram of another embodiment of the vehicle-mounted charging system provided by the present application;

[0022] Figure 7 It is a flow chart of another embodiment of the charging control method provided by the present application;

[0023] Figure 8 It is a schematic diagram of a framework of an embodiment of an electronic device provided by the present application;

[0024] Fig. 9 It is a schematic diagram of a framework of an embodiment of a computer-readable storage medium provided by the present application. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0026] It should be noted that the term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone; the term "multiple" means three or more than three; the terms "first", "second", etc. are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. In addition, the terms "include" and "have" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0027] See also Figure 1 , Figure 1 This is a flow chart of an embodiment of the charging control method provided by the present application. The method can be executed by a vehicle controller, which can be a controller such as a VCU (Vehicle Control Unit) or an ECU (Electronic Control Unit) of the vehicle, or a vehicle controller can also be an additional controller such as an MCU (Micro Controller Unit), etc. This embodiment does not specifically limit this. It should be noted that if there are substantially the same results, the method of the present application is not limited to Figure 1 The process sequence shown is limited.

[0028] like Figure 1 As shown, the method comprises the following steps:

[0029] S11: In response to the vehicle being in a stationary state and the on-board charger being in an operating state, obtaining a current temperature of the target device.

[0030] When the vehicle speed is detected to be 0, it is determined that the vehicle is stationary. Further, when the vehicle is stationary, it is determined whether the on-board charger is in working state. When the on-board charger is in working state, it is determined that the vehicle is in slow charging state. At this time, the on-board charger charges the battery.

[0031] When the vehicle is in a slow charging state, the devices that affect the vehicle charging efficiency mainly include the on-board charger and the battery. In this embodiment, the target device includes at least one of the on-board charger and the battery. That is, the target device may include only the on-board charger, or only the battery, or both the on-board charger and the battery.

[0032] Exemplarily, temperature sensors are installed inside the on-board charger and inside the battery, respectively. The temperature sensor of the on-board charger and the temperature sensor of the battery detect the temperature of the on-board charger and the temperature of the battery in real time, respectively, and send the detected relevant data to the vehicle controller. The vehicle controller can obtain the current temperature of the on-board charger through the temperature sensor of the on-board charger, and obtain the current temperature of the battery through the temperature sensor of the battery.

[0033] S12: In response to the current temperature of the target device being outside the optimal temperature range of the target device, determining a first target opening value of the active air intake grille based on the current temperature of the target device.

[0034] The target device has an optimal temperature range. Compared with the current temperature of the target device being outside the optimal temperature range of the target device, when the current temperature of the target device is within the optimal temperature range of the target device, the charging efficiency of the target device is higher. It should be noted that in this embodiment, the optimal temperature range of the on-board charger and the optimal temperature range of the battery are different, and the optimal temperature range of the on-board charger and the optimal temperature range of the battery are calibrated according to experiments.

[0035] Figure 2 It is a schematic diagram of the optimal temperature range of the on-board charger provided in this application. Figure 2In the test, the charging efficiency of the on-board charger (OBC) changes with the temperature of the on-board charger. Moreover, when the temperature of the on-board charger gradually increases from a lower temperature, the charging efficiency of the on-board charger first increases and then decreases. Therefore, by testing the relationship between the charging efficiency of the on-board charger and the temperature of the on-board charger, the optimal temperature range of the on-board charger can be calibrated.

[0036] Figure 3 It is a schematic diagram of the optimal temperature range of the battery provided in this application. Figure 3 The diagram shows the change curves between the battery internal resistance and the battery temperature when the battery SOC (State of Charge) is 5%, 20%, 50% and 100% respectively. It can be understood that the lower the battery internal resistance, the less power the battery loses during charging, and the higher the battery charging efficiency. Since the battery internal resistance varies with the battery temperature when the SOC of different batteries is different, the change curve between the battery internal resistance and the battery temperature at each SOC can be measured in this embodiment, and the optimal temperature range of the battery can be calibrated by combining the various change curves.

[0037] When the current temperature of the target device is less than the lower limit of the optimal temperature interval of the target device, or the current temperature of the target device is greater than the upper limit of the optimal temperature interval of the target device, it is determined that the current temperature of the target device is outside the optimal temperature interval of the target device. When the current temperature of the target device is greater than or equal to the lower limit of the optimal temperature interval of the target device and less than or equal to the upper limit of the optimal temperature interval of the target device, it is determined that the current temperature of the target device is within the optimal temperature interval of the target device.

[0038] It should be noted that, when the target device includes a vehicle charger and a battery, the current temperature of the target device is outside the optimal temperature range of the target device means that the current temperature of the vehicle charger is outside the optimal temperature range of the vehicle charger, and the current temperature of the battery is outside the optimal temperature range of the battery, and the current temperature of the target device is within the optimal temperature range of the target device means that the current temperature of the vehicle charger is within the optimal temperature range of the vehicle charger, and the current temperature of the battery is within the optimal temperature range of the battery.

[0039] S13: Controlling the opening of the active air intake grille to a first target opening value, so as to adjust the current temperature of the target device to be within an optimal temperature range of the target device.

[0040] Exemplarily, the opening degree (opening angle) of the active air intake grille is between 0% and 100%. When the opening degree of the active air intake grille is 0%, the active air intake grille is in a fully closed state; when the opening degree of the active air intake grille is 100%, the active air intake grille is in a fully open state.

[0041] Exemplarily, when the current temperature of the target device is less than the lower limit of the optimal temperature range of the target device, the opening of the active air intake grille can be reduced, that is, the first target opening value of the active air intake grille is a smaller opening value, such as 0%, 1%, etc., to reduce the heat exchange with the outside air and reduce the heat dissipation of the target device, so that the current temperature of the target device rises quickly to the corresponding optimal temperature range. When the current temperature of the target device is greater than the upper limit of the optimal temperature range of the target device, the opening of the active air intake grille can be increased, that is, the first target opening value of the active air intake grille is a larger opening value, such as 100%, 99%, etc., to increase the heat exchange with the outside air and increase the heat dissipation of the target device, so that the current temperature of the target device is quickly reduced. Considering that the temperature rise rate of the on-board charger and the temperature rise rate of the battery may be different, the current temperature of the target device (i.e., at least one of the on-board charger and the battery) can be quickly reduced to the corresponding optimal temperature range.

[0042] In this embodiment, when the vehicle is stationary and the on-board charger is in operation, when the current temperature of the target device is outside the optimal temperature range of the target device, the first target opening value of the active air intake grille is determined based on the current temperature of the target device, and the opening of the active air intake grille is controlled to be the first target opening value to adjust the current temperature of the target device to be within the optimal temperature range of the target device. The target device includes at least one of the on-board charger and the battery. That is, when the vehicle is in a slow charging condition, the current temperature of at least one of the on-board charger and the battery is quickly brought to the corresponding optimal temperature range by controlling the opening of the active air intake grille, thereby improving the charging efficiency of the on-board charger and / or the battery, and thereby improving the charging efficiency of the vehicle.

[0043] See also Figure 4 , Figure 4 is a flow chart of another embodiment of the charging control method provided by the present application, which can be executed by the aforementioned vehicle controller. It should be noted that if there is substantially the same result, the method of the present application is not limited to Figure 4 The process sequence shown is limited. Figure 4 As shown, the method comprises the following steps:

[0044] S41: In response to the vehicle being in a stationary state and the on-board charger being in an operating state, obtaining a current temperature of the target device.

[0045] The relevant contents of step S41 may refer to the aforementioned step S11 and will not be described in detail here.

[0046] S42: Determine whether the current temperature of the target device is within the optimal temperature range of the target device.

[0047] If the current temperature of the target device is outside the optimal temperature range of the target device, step S43 is performed. If the current temperature of the target device is within the optimal temperature range of the target device, step S45 is performed.

[0048] The relevant contents of step S42 may refer to the aforementioned step S12 and will not be described in detail here.

[0049] S43: Determine a first target opening value of the active air intake grille based on the current temperature of the target device.

[0050] Exemplarily, initially the active air intake grille is in a fully closed state, and subsequently the opening of the active air intake grille is adjusted according to the current temperature of the target device.

[0051] In one embodiment, the target device includes at least one of an on-board charger and a battery. Determining the first target opening value of the active air intake grille based on the current temperature of the target device includes: if the current temperature of the target device is less than the lower limit of the optimal temperature range of the target device, determining the first target opening value of the active air intake grille to be a first preset opening value. If the current temperature of the target device is greater than the upper limit of the optimal temperature range of the target device, determining the first target opening value of the active air intake grille to be a second preset opening value.

[0052] Among them, the first preset opening value is less than the second preset opening value. The first preset opening value is a smaller opening value. When the opening of the active air intake grille is the first preset opening value, the active air intake grille is in a fully closed state or close to a fully closed state. Exemplarily, the first preset opening value is 0%, 1%, 2%, 5%, etc. The second preset opening value is a larger opening value. When the opening of the active air intake grille is the second preset opening value, the active air intake grille is in a fully open state or close to a fully open state. Exemplarily, the second preset opening value is 90%, 92%, 95%, 100%, etc.

[0053] For example, the target device only includes the on-board charger. If the current temperature of the on-board charger is less than the lower limit of the optimal temperature range of the on-board charger, the first target opening value of the active air intake grille is determined to be the first preset opening value, and heat dissipation is reduced so that the current temperature of the on-board charger rises quickly to within the optimal temperature range of the on-board charger. If the current temperature of the on-board charger is greater than the upper limit of the optimal temperature range of the on-board charger, the first target opening value of the active air intake grille is determined to be the second preset opening value, and heat dissipation is increased so that the current temperature of the on-board charger drops quickly to within the optimal temperature range of the on-board charger.

[0054] For another example, the target device includes only a battery. If the current temperature of the battery is less than the lower limit of the optimal temperature range of the battery, the first target opening value of the active air intake grille is determined to be a first preset opening value, and heat dissipation is reduced so that the current temperature of the battery rises quickly to within the optimal temperature range of the battery. If the current temperature of the battery is greater than the upper limit of the optimal temperature range of the battery, the first target opening value of the active air intake grille is determined to be a second preset opening value, and heat dissipation is increased so that the current temperature of the battery drops quickly to within the optimal temperature range of the battery.

[0055] For another example, the target device includes a vehicle charger and a battery. If the current temperature of the vehicle charger is less than the lower limit of the optimal temperature range of the vehicle charger, and the current temperature of the battery is less than the lower limit of the optimal temperature range of the battery, the first target opening value of the active air intake grille is determined to be a first preset opening value, and heat dissipation is reduced so that the current temperature of the vehicle charger and the current temperature of the battery quickly rise to the corresponding optimal temperature range. If the current temperature of the vehicle charger is greater than the upper limit of the optimal temperature range of the vehicle charger, and the current temperature of the battery is greater than the upper limit of the optimal temperature range of the battery, the first target opening value of the active air intake grille is determined to be a second preset opening value, and heat dissipation is increased so that the current temperature of the vehicle charger and the battery quickly drop to the corresponding optimal temperature range.

[0056] In another embodiment, the first device is one of the on-board charger and the battery, and the second device is the other of the on-board charger and the battery. The optimal temperature range of the first device is the first optimal temperature range, and the optimal temperature range of the second device is the second optimal temperature range. The target device is the first device, that is, the current temperature of the first device is outside the first optimal temperature range. In this embodiment, the charging efficiency of the first device is prioritized, while taking into account the charging efficiency of the second device.

[0057] Exemplarily, the first device is a vehicle charger, the second device is a battery, and the target device is a vehicle charger. It should be noted that in other examples, the first device and the second device can be interchangeable, that is, the first device can be a battery, the second device can be a vehicle charger, and the target device is a battery. Assume that the current temperature of the first device is T, the current temperature of the second device is TEMP, the first optimal temperature range of the first device is T1~T2, and the second optimal temperature range of the second device is TEMP1~TEMP2.

[0058] Specifically, determining the first target opening value of the active intake grille based on the current temperature of the target device includes: if at least one of the following conditions is satisfied, determining the first target opening value as the first preset opening value: the current temperature of the first device is less than the lower limit of the first optimal temperature range of the first device (i.e., T < T1), and the current temperature of the second device is less than the lower limit of the second optimal temperature range of the second device (i.e., TEMP < TEMP1); if the current temperature of the first device is greater than the upper limit of the first optimal temperature range and the current temperature of the second device is greater than or equal to the lower limit of the second optimal temperature range (i.e., T > T2 and TEMP ≥ TEMP1), determining the first target opening value as the second preset opening value. The relevant content of the first preset opening value and the second preset opening value can be referred to the description in the foregoing embodiments and will not be elaborated herein.

[0059] Among them, when the current temperatures of the first device and the second device are both less than the lower limits of the respective optimal temperature ranges, the opening of the active intake grille is determined as the first target opening value, heat dissipation is reduced, the current temperatures of the first device and the second device both rise, and the current temperature of at least one of the first device and the second device rises into the respective optimal temperature ranges, thereby improving the charging efficiency of the vehicle.

[0060] When only one of the first device and the second device has a current temperature less than the lower limit of the respective optimal temperature range, if the opening of the active intake grille is determined as the second target opening value, the charging efficiency of one of the devices will be sacrificed, resulting in little improvement in the charging efficiency of the vehicle or even a decrease in the charging efficiency of the vehicle. For example, if the current temperature of the first device is greater than the upper limit of the first optimal temperature range of the first device and the current temperature of the second device is less than the lower limit of the second optimal temperature range of the second device, if the first target opening value of the active intake grille is determined as the second preset opening value, although the current temperature of the first device can be quickly reduced to within the first optimal temperature range, improving the charging efficiency of the first device, the current temperature of the second device also quickly decreases and deviates from the lower limit of the second optimal temperature range, resulting in a low charging efficiency of the second device. Therefore, at this time, the charging efficiency of the first device and the charging efficiency of the second device can be comprehensively considered, the first target opening value of the active intake grille is determined as the first preset opening value, and the surplus heat of the first device or the second device can be further considered to further improve the utilization rate of the surplus heat and reduce heat waste.

[0061] When the current temperature of the first device is greater than the upper limit value of the first optimal temperature range and the current temperature of the second device is greater than or equal to the lower limit value of the second optimal temperature range, determine the first target opening value as the second preset opening value. At this time, give priority to the charging efficiency of the first device, and make the current temperature of the first device quickly drop to within the first optimal temperature range by increasing heat dissipation, so as to improve the charging efficiency of the vehicle.

[0062] The following briefly describes the solution for utilizing excess heat in the present application in conjunction with an on-vehicle charging system.

[0063] Figure 5 It is a schematic structural diagram of an embodiment of the on-vehicle charging system provided by the present application. As Figure 5 shown, the on-vehicle charging system includes a first device 11, a second device 12, a multi-way valve 13, and a first water pump 14. The first device 11, the second device 12, and the first water pump 14 are connected in series between the first port 13a and the second port 13b of the multi-way valve 13. The positions of the first device 11, the second device 12, and the first water pump 14 can be interchanged. Exemplarily, the first port of the first device 11 is connected to the first port 13a of the multi-way valve 13, the second port of the first device 11 is connected to the water outlet of the first water pump 14, the first port of the second device 12 is connected to the second port 13b of the multi-way valve 13, and the second port of the second device 12 is connected to the water inlet of the first water pump 14. It should be noted that Figure 5 only a three-way valve is used as an example for the multi-way valve for illustrative purposes. In other examples, the multi-way valve 13 can also be a four-way valve, a five-way valve, etc.

[0064] In the case where the current temperature of the first device 11 is less than the lower limit value of the first optimal temperature range (i.e., T < T1):

[0065] If the current temperature of the first device 11 is less than the lower limit value of the second optimal temperature range and the current temperature of the second device 12 is greater than the upper limit value of the second optimal temperature range (i.e., T < TEMP1 and TEMP > TEMP2), at this time, the second device 12 has excess heat, then the first port 13a and the second port 13b of the multi-way valve 13 can be controlled to be导通, and the first device 11, the second device 12, and the first water pump 14 can form a cooling circuit, and the excess heat of the second device 12 can be used to heat the first device 11, so that the current temperature of the first device 11 quickly rises to within the first optimal temperature range, and the current temperature of the second device 12 quickly drops to within the second optimal temperature range;

[0066] If the current temperature of the first device 11 is less than the lower limit of the second optimal temperature range and the current temperature of the second device 12 is less than or equal to the upper limit of the second optimal temperature range (i.e., T < TEMP1 and TEMP ≤ TEMP2), and there is no excess heat in the second device 12 at this time, then the first port 13a of the multi-way valve 13 is not controlled to conduct with the second port 13b of the multi-way valve 13, and the first device 11, the second device 12, and the first water pump 14 cannot form a cooling circuit.

[0067] If the current temperature of the first device 11 is greater than or equal to the lower limit of the second optimal temperature range (i.e., T ≥ TEMP1), considering that if the excess heat of the second device 12 is used at this time, the current temperature of the second device 12 will decrease, resulting in the current temperature of the second device 12 being outside the second optimal temperature range, which will affect the charging efficiency of the second device 12. Therefore, at this time, the first port 13a of the multi-way valve 13 is not controlled to conduct with the second port 13b of the multi-way valve 13, and the first device 11, the second device 12, and the first water pump 14 also cannot form a cooling circuit.

[0068] In the case where the current temperature of the first device 11 is greater than the upper limit of the first optimal temperature range (i.e., T > T2):

[0069] If the current temperature of the second device 12 is less than the lower limit of the second optimal temperature range (i.e., TEMP < TEMP1), and there is excess heat in the first device 11 at this time, then the first port 13a of the multi-way valve 13 can be controlled to conduct with the second port 13b of the multi-way valve 13, and the first device 11, the second device 12, and the first water pump 14 can form a cooling circuit, and the excess heat of the first device 11 can be used to heat the second device 12, so that the current temperature of the first device 11 quickly drops within the first optimal temperature range, and the current temperature of the second device 12 quickly rises within the second optimal temperature range;

[0070] If the current temperature of the second device 12 is greater than or equal to the lower limit of the second optimal temperature range (i.e., TEMP ≥ TEMP1), there is no need to use the excess heat of the first device 11 to heat the second device 12 at this time. Therefore, at this time, the first port 13a of the multi-way valve 13 is not controlled to conduct with the second port 13b of the multi-way valve 13, and the first device 11, the second device 12, and the first water pump 14 also cannot form a cooling circuit.

[0071] Figure 6 It is a schematic structural diagram of another embodiment of the in-vehicle charging system provided by the present application. Compared with Figure 5 the in-vehicle charging system shown, Figure 6The vehicle charging system further includes a second water pump 15 and a radiator 16. The water outlet of the second water pump 15 is connected to the second port of the second device 12, the water inlet of the second water pump 15 is connected to the water outlet of the radiator 16, and the water inlet of the radiator 16 is connected to the third port 13c of the multi-way valve 13.

[0072] When it is initially detected that the vehicle is in a slow charging state, the radiator 16 and the first water pump 14 can be controlled to work, the second water pump 15 can be controlled to stop working, and the first port 13a of the multi-way valve 13 and the third port 13c of the multi-way valve 13 can be controlled to be connected, so that the radiator 16, the first water pump 14 and the first device 11 form a cooling circuit, so that the radiator 16 can dissipate heat for the first device 11.

[0073] When it is necessary to utilize the excess heat of the first device 11 to heat the second device 12, or when it is necessary to utilize the excess heat of the second device 12 to heat the first device 11, the first water pump 14 can be controlled to work, the second water pump 15 can be controlled not to work, and the first port 13a of the multi-way valve 13 and the second port 13b of the multi-way valve 13 can be controlled to be connected (although the second water pump 15 is not working at this time, the coolant can flow through the second water pump 15 under the drive of the first water pump 14), or the first water pump 14 can be controlled not to work, the second water pump 15 can be controlled to work, and the first port 13a of the multi-way valve 13 and the second port 13b of the multi-way valve 13 can be controlled to be connected (although the first water pump 14 is not working at this time, the coolant can flow through the first water pump 14 under the drive of the second water pump 15), so that the first water pump 14, the first device 11, the second device 12, and the second water pump 15 form a cooling circuit.

[0074] S44: Controlling the opening of the active air intake grille to a first target opening value.

[0075] After the first target opening value of the active air intake grille is determined, the opening of the active air intake grille is further controlled to be the first target opening value to adjust the current temperature of the target device.

[0076] Furthermore, after executing step S44, the aforementioned step S42 and subsequent steps are re-executed until the current temperature of the target device is within the corresponding optimal temperature range and then step S45 is executed.

[0077] S45: Determine a second target opening value of the active air intake grille based on the current ambient temperature.

[0078] When the opening of the active air intake grille is the second target opening value, the current temperature of the target device can be located within the corresponding optimal temperature range under the current ambient temperature.

[0079] Specifically, if the current ambient temperature is less than the first temperature threshold, it is considered that the current ambient temperature is low, and the second target opening value is determined to be a third preset opening value (α1). The third preset opening value is a smaller opening value. When the opening of the active air intake grille is the third preset opening value, the active air intake grille is in a fully closed state or close to a fully closed state. Exemplarily, the third preset opening value is 0%, 1%, 2%, 5%, etc. The third preset opening value may be the same as or different from the aforementioned first preset opening value, and this embodiment does not specifically limit this.

[0080] If the current ambient temperature is greater than the second temperature threshold, it is considered that the current ambient temperature is high, and the second target opening value is determined to be the fourth preset opening value (α30). The fourth preset opening value is greater than the third preset opening value. The fourth preset opening value is a larger opening value. When the opening of the active air intake grille is the fourth preset opening value, the active air intake grille is in a fully open or nearly fully open state. Exemplarily, the fourth preset opening value is 90%, 95%, 100%, etc. The fourth preset opening value may be the same as or different from the aforementioned second preset opening value, and this embodiment does not specifically limit this.

[0081] If the current ambient temperature is greater than or equal to the first temperature threshold and less than or equal to the second temperature threshold, the second target opening value is further determined based on the current ambient temperature, the current temperature of the target device and the first mapping relationship, so that the temperature of the target device can be within the corresponding optimal temperature range at the current ambient temperature. Among them, the first mapping relationship is the mapping relationship between the ambient temperature, the target device temperature and the active air intake grille opening. Different ambient temperatures and different target device temperatures in the first mapping relationship correspond to different active air intake grille openings, and the first mapping relationship is calibrated after multiple experiments. It should be noted that the active air intake grille opening in the first mapping relationship is greater than the aforementioned third preset opening value and less than the aforementioned fourth preset opening value.

[0082] For example, if the target device only includes an on-board charger, the first mapping relationship is a mapping relationship between the ambient temperature, the on-board charger temperature, and the opening of the active air intake grille. When the current temperature of the on-board charger is within the optimal temperature range of the on-board charger, the second target opening value of the active air intake grille can be further determined based on the current ambient temperature, the current temperature of the on-board charger, and the first mapping relationship, so that the temperature of the on-board charger is within the optimal temperature range of the on-board charger at the current ambient temperature.

[0083] For another example, the target device includes an on-board charger and a battery, and the first mapping relationship is a mapping relationship between the ambient temperature, the on-board charger temperature, the battery temperature, and the opening of the active air intake grille. When the current temperature of the on-board charger is within the optimal temperature range of the on-board charger, and the current temperature of the battery is also within the optimal temperature range of the battery, the second target opening value of the active air intake grille can be further determined based on the current ambient temperature, the current temperature of the on-board charger, the current temperature of the battery, and the first mapping relationship, so that at the current ambient temperature, the temperature of the on-board charger is within the optimal temperature range of the on-board charger, and the temperature of the battery is within the optimal temperature range of the battery.

[0084] In one example, the first mapping relationship may be a formula obtained through fitting of multiple experiments, the formula taking the ambient temperature and the temperature of the target device as independent variables, and taking the opening of the active air intake grille as a dependent variable.

[0085] In another example, the first mapping relationship includes several ambient temperature ranges, several target device temperature ranges, and active grille openings corresponding to different ambient temperature ranges and target device temperature ranges. For example, if the target device is a vehicle charger, the first mapping relationship can be represented by Table 1.

[0086] Table 1:

[0087]

[0088] In Table 1, T1 and T2 are the lower limit and upper limit of the optimal temperature range of the vehicle charger, respectively, t1 and t8 are the aforementioned first temperature threshold and the second temperature threshold, respectively, and α2~α28 are values ​​between the aforementioned third preset opening value and the fourth preset opening value, that is, α2~α28 are all greater than the third preset opening value and are all less than the fourth preset opening value.

[0089] Optionally, if the current ambient temperature is greater than or equal to the first temperature threshold and less than or equal to the second temperature threshold, the target adjustment coefficient can be determined based on the current ambient temperature, the current temperature of the target device, the current active air intake grille opening, the current charging current, and the second mapping relationship; the target adjustment coefficient is multiplied by the current active air intake grille opening to obtain the second target opening value. The second mapping relationship is a mapping relationship between the ambient temperature, the target device temperature, the active air intake grille opening, the charging current, and the opening adjustment coefficient, and the second mapping relationship is calibrated according to experiments.

[0090] S46: Controlling the opening of the active air intake grille to a second target opening value.

[0091] Further, after executing step S46, step S42 is re-executed to maintain the temperature of the target device within the corresponding optimal temperature range during the entire slow charging process.

[0092] In this embodiment, when the vehicle is in a slow charging condition, when the current temperature of the target device is outside the optimal temperature range of the target device, the opening of the active air intake grille is controlled to be the first target opening value, so that the current temperature of the target device quickly reaches the corresponding optimal temperature range; when the current temperature of the target device is within the corresponding optimal temperature range, the second target opening value of the active air intake grille is further determined based on the current ambient temperature to further accurately adjust the opening of the active air intake grille. In this way, the opening of the active air intake grille can be adjusted in real time during the entire slow charging process, so that the temperature of the target device quickly reaches the optimal efficiency temperature range, and the temperature of the target device is maintained in the optimal temperature range during the entire slow charging process, thereby improving the charging efficiency of the vehicle during the entire slow charging process. At the same time, during the slow charging process, the excess heat of the on-board charger or battery can be fully utilized to reduce charging energy consumption, improve the utilization rate of excess heat, and reduce the user's vehicle use cost.

[0093] See also Figure 7 , Figure 7 is a flow chart of another embodiment of the charging control method provided by the present application, which can be executed by the aforementioned vehicle controller. It should be noted that if there is substantially the same result, the method of the present application is not limited to Figure 7 The process sequence shown is limited. Figure 7 As shown, the method comprises the following steps:

[0094] S71: In response to the vehicle being in a stationary state and the on-board charger being in an operating state, obtaining a current temperature of a target device.

[0095] S72: Determine whether the current temperature of the target device is within the optimal temperature range of the target device.

[0096] If the current temperature of the target device is outside the optimal temperature range of the target device, step S73 is performed. If the current temperature of the target device is within the optimal temperature range of the target device, step S77 is performed.

[0097] S73: Determine a first target opening value of the active air intake grille based on the current temperature of the target device.

[0098] S74: Controlling the opening of the active air intake grille to a first target opening value.

[0099] The relevant contents of step S71 to step S74 can refer to the aforementioned step S41 to step S44, and the detailed description is omitted here.

[0100] Further, after executing step S74, execute step S75.

[0101] S75: Determine whether the current temperature of the target device reaches the target temperature.

[0102] The target temperature is greater than or equal to the lower limit of the optimal temperature range of the target device and less than or equal to the upper limit of the optimal temperature range of the target device. When the current temperature of the target device is the target temperature, the charging efficiency of the target device is the highest. The target temperature of the target device can be calibrated according to experiments.

[0103] For example, if the target device is a vehicle charger, and the optimal temperature range of the vehicle charger is T1 to T2, then the target temperature of the vehicle charger is a value greater than or equal to T1 and less than or equal to T2.

[0104] If the current temperature of the target device does not reach the target temperature, step S76 is performed. If the current temperature of the target device reaches the target temperature, step S77 is performed.

[0105] S76: Maintaining the opening of the active air intake grille at a first target opening value.

[0106] Further, step S75 is re-executed until the current temperature of the target device reaches the target temperature, and then step S77 is executed.

[0107] S77: Determine a second target opening value of the active air intake grille based on the current ambient temperature.

[0108] The relevant contents of step S77 can refer to the aforementioned step S45, and the detailed description is omitted here.

[0109] S78: Controlling the opening of the active air intake grille to a second target opening value.

[0110] Furthermore, after executing step S78, the aforementioned step S72 is re-executed to maintain the temperature of the target device within the corresponding optimal temperature range during the entire slow charging process.

[0111] and Figure 4 Compared with the embodiment shown in the figure, in the present embodiment, when the current temperature of the target device is outside the optimal temperature range of the target device, the opening of the active air intake grille is first controlled to be a first target opening value so that the current temperature of the target device quickly reaches the target temperature of the target device (i.e., the temperature of the target device when the charging efficiency is the highest), and then the second target opening value of the active air intake grille is further determined based on the current ambient temperature to further accurately adjust the opening of the active air intake grille, thereby further improving the charging efficiency of the vehicle.

[0112] See also Figure 8 , Figure 8 8 is a schematic diagram of a framework of an electronic device according to an embodiment of the present application. In this embodiment, the electronic device 80 includes a memory 81 and a processor 82 .

[0113] The processor 82 may also be referred to as a CPU (Central Processing Unit). The processor 82 may be an integrated circuit chip having signal processing capabilities. The processor 82 may also be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. A general-purpose processor may be a microprocessor or the processor 82 may also be any conventional processor 82, etc.

[0114] The memory 81 in the electronic device 80 is used to store program instructions required for the processor 82 to run.

[0115] The processor 82 is used to execute program instructions to implement the charging control method in the present application.

[0116] See also Fig. 9 , Fig. 9 It is a schematic diagram of the framework of an embodiment of a computer-readable storage medium provided in the present application. The computer-readable storage medium 90 of the embodiment of the present application stores program instructions 91, and the program instructions 91 implement the charging control method provided in the present application when executed. Among them, the program instructions 91 can form a program file and be stored in the above-mentioned computer-readable storage medium 90 in the form of a software product, so that a computer device (which can be a personal computer, a server, or a network device, etc.) executes all or part of the steps of the methods of each embodiment of the present application. The aforementioned computer-readable storage medium 90 includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a disk or an optical disk, or a terminal device such as a computer, a server, a mobile phone, and a tablet.

[0117] The above are only implementation methods of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A charging control method, characterized in that: Applied to an on-board charging system, the on-board charging system includes an on-board charger and a battery; the method includes: In response to the vehicle being in a stationary state and the on-board charger being in an operating state, obtaining a current temperature of a target device, the target device comprising at least one of the on-board charger and the battery; In response to a current temperature of the target device being outside an optimal temperature range of the target device, determining a first target opening value of the active air intake grille based on the current temperature of the target device; The opening of the active air intake grille is controlled to be the first target opening value, so as to adjust the current temperature of the target device to be within the optimal temperature range of the target device.

2. The method according to claim 1, characterized in that The first device is one of the on-board charger and the battery, the second device is the other of the on-board charger and the battery, and the target device is the first device; The determining of a first target opening value of the active air intake grille based on the current temperature of the target device includes: If at least one of the following conditions is met, the first target opening value is determined to be a first preset opening value: the current temperature of the first device is less than the lower limit value of the first optimal temperature range of the first device, and the current temperature of the second device is less than the lower limit value of the second optimal temperature range of the second device; If the current temperature of the first device is greater than the upper limit of the first optimal temperature range, and the current temperature of the second device is greater than or equal to the lower limit of the second optimal temperature range, determining the first target opening value to be a second preset opening value; Wherein, the first preset opening value is smaller than the second preset opening value.

3. The method according to claim 2, characterized in that The on-board charging system further includes a multi-way valve and a first water pump, wherein the first device, the second device and the first water pump are connected in series between a first port of the multi-way valve and a second port of the multi-way valve; The method further comprises: In the case where the current temperature of the first device is lower than the lower limit of the first optimal temperature interval, if the current temperature of the first device is lower than the lower limit of the second optimal temperature interval, and the current temperature of the second device is higher than the upper limit of the second optimal temperature interval, the first port of the multi-way valve is controlled to be connected with the second port of the multi-way valve, so that the second device heats the first device; And / or, when the current temperature of the first device is greater than the upper limit value of the first optimal temperature range of the first device, if the current temperature of the second device is less than the lower limit value of the second optimal temperature range, the first port of the multi-way valve is controlled to be connected to the second port of the multi-way valve so that the first device heats the second device.

4. The method according to claim 2, characterized in that: The first device is the on-board charger, and the second device is the battery.

5. The method according to claim 1, characterized in that The determining of a first target opening value of the active air intake grille based on the current temperature of the target device includes: If the current temperature of the target device is less than the lower limit of the optimal temperature range, determining the first target opening value to be a first preset opening value; If the current temperature of the target device is greater than the upper limit of the optimal temperature range, determining the first target opening value to be a second preset opening value; Wherein, the first preset opening value is smaller than the second preset opening value.

6. The method according to claim 1, characterized in that The method further comprises: In response to the current temperature of the target device being within the optimal temperature range of the target device, determining a second target opening value of the active air intake grille based on the current ambient temperature; The opening of the active air intake grille is controlled to be the second target opening value.

7. The method according to claim 1, characterized in that After controlling the opening of the active air intake grille to be the first target opening value, the method further includes: Determining whether the current temperature of the target device reaches the target temperature; wherein the target temperature is greater than or equal to the lower limit value of the optimal temperature range and less than or equal to the upper limit value of the optimal temperature range; If the current temperature of the target device does not reach the target temperature, maintaining the opening of the active air intake grille at the first target opening value; If the current temperature of the target device reaches the target temperature, a second target opening value of the active air intake grille is determined based on the current ambient temperature, and the opening of the active air intake grille is controlled to be the second target opening value.

8. The method according to claim 6 or 7, characterized in that: The determining of the second target opening value of the active air intake grille based on the current ambient temperature includes: If the current ambient temperature is lower than the first temperature threshold, determining the second target opening value to be a third preset opening value; If the current ambient temperature is greater than a second temperature threshold, determining the second target opening value to be a fourth preset opening value; If the current ambient temperature is greater than or equal to the first temperature threshold and less than or equal to the second temperature threshold, determining the second target opening value based on the current ambient temperature, the current temperature of the target device and the first mapping relationship; The third preset opening value is smaller than the fourth preset opening value, and the first mapping relationship is a mapping relationship between the ambient temperature, the target device temperature and the opening of the active air intake grille.

9. An electronic device, characterized in that: comprising a memory and a processor coupled to each other, The memory stores program instructions; The processor is used to execute the program instructions stored in the memory to implement the method according to any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium is used to store program instructions, and the program instructions can be executed by a processor to implement the method according to any one of claims 1 to 8.

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