Control method and device of vehicle wireless charging heat management system and storage medium

Abstract

The invention relates to the technical field of vehicle heat management, and discloses a control method and device of a vehicle wireless charging heat management system and a storage medium, the heat management system comprises a heat dissipation loop used for dissipating heat of an energy receiver of a vehicle, and the heat dissipation loop is internally provided with a water pump, and the control method comprises the steps that it is detected that the vehicle is in a wireless charging mode, if so, acquiring a first current temperature of the energy receiver and a second current temperature of the cooling liquid in the heat dissipation loop; if the first current temperature is larger than the first temperature threshold value and / or the second current temperature is larger than the second temperature threshold value, the target power of the water pump is determined according to the first current temperature and the second current temperature, and the water pump is controlled to work at the target power. Therefore, the target power of the water pump is determined through the first current temperature and the second current temperature, the working states of the wireless charging system and the thermal management system are fully considered, and a good heat dissipation effect on the energy receiver can be achieved under the condition of saving energy.

Description

Technical Field

[0001] The present application relates to the field of vehicle thermal management technology, and in particular to a control method, device and storage medium for a vehicle wireless charging thermal management system. Background Art

[0002] With the continuous advancement of intelligent driving technology of new energy vehicles, automatic parking technology has become more and more mature, and more and more users are beginning to use the automatic parking function. In order to integrate the automatic parking function and make charging more convenient and easy, wireless charging for cars came into being. The wireless charging system is based on magnetic resonance technology. Compared with traditional conductive charging, it has the advantages of safety, contactlessness, non-oxidation, high power, outdoor waterproofness, cleanliness, and long charging distance.

[0003] At present, during the vehicle wireless charging process, the heat dissipation effect of the vehicle-side energy receiving coil of the wireless charging system is not good, and the heat dissipation performance cannot be adjusted according to the thermal management system and the specific working state of the wireless charging system to achieve good heat dissipation effect while saving energy. Summary of the invention

[0004] In view of the above problems, the present application provides a control method, device and storage medium for a vehicle wireless charging thermal management system, which can achieve good heat dissipation effect for an energy receiver while saving energy.

[0005] A first aspect of the present application provides a control method for a vehicle wireless charging thermal management system, the thermal management system comprising a heat dissipation circuit for dissipating heat from an energy receiver of the vehicle, a water pump being arranged in the heat dissipation circuit, the control method comprising: upon detecting that the vehicle is in a wireless charging mode, obtaining a first current temperature of the energy receiver and a second current temperature of the coolant in the heat dissipation circuit; if the first current temperature is greater than a first temperature threshold and / or the second current temperature is greater than a second temperature threshold, determining a target power of the water pump according to the first current temperature and the second current temperature, and controlling the water pump to operate at the target power.

[0006] In some specific embodiments, the step of determining the target power of the water pump according to the first current temperature and the second current temperature includes: if the first current temperature is greater than the first temperature threshold, determining the corresponding first power according to the first preset temperature range in which the first current temperature is located; if the second current temperature is greater than the second temperature threshold, determining the corresponding second power according to the second preset temperature range in which the second current temperature is located; determining the target power of the water pump according to the first power and the second power, and controlling the water pump to operate at the target power; wherein different first preset temperature ranges correspond to different first powers, and the first preset temperature range with a higher average temperature corresponds to a higher first power, and different second preset temperature ranges correspond to different second powers, and the second preset temperature range with a higher average temperature corresponds to a higher second power.

[0007] In some specific embodiments, the step of determining the target power of the water pump based on the first power and the second power includes: if the first power is equal to the second power, using the first power as the target power of the water pump; if the first power is not equal to the second power, detecting whether the first current temperature is greater than the first preset temperature, and whether the second current temperature is greater than the second preset temperature; if it is detected that the first current temperature is greater than the first preset temperature and / or the second current temperature is greater than the second preset temperature, using the higher power value between the first power and the second power as the target power of the water pump; if it is detected that the first current temperature is less than or equal to the first preset temperature and the second current temperature is less than the second preset temperature, using the average power of the first power and the second power as the target power of the water pump.

[0008] In some specific embodiments, if the first current temperature is greater than the first temperature threshold, then the corresponding first power is determined according to the first preset temperature range of the first current temperature, and if the first current temperature is greater than the first temperature threshold, then the corresponding second power is determined according to the second preset temperature range of the second current temperature. The steps include: obtaining the current ambient temperature of the environment in which the vehicle is located, and subtracting the preset basic ambient temperature from the current ambient temperature to obtain a difference temperature; determining a first power correction amount corresponding to the first power according to the difference temperature, and determining a second power correction amount corresponding to the second power according to the difference temperature; wherein the difference temperature is related to the first power correction amount and the second power correction amount. There is a corresponding relationship; the sum of the first power and the first power correction amount is used as the corrected first power, and the sum of the second power and the second power correction amount is used as the corrected second power; wherein, when the difference temperature is 0, the first power correction amount and the second power correction amount are both 0, when the difference temperature is greater than 0, the first power correction amount and the second power correction amount are greater than 0, and when the difference temperature is less than 0, the first power correction amount and the second power correction amount are less than 0; the step of determining the target power of the water pump according to the first power and the second power, and controlling the water pump to work at the target power includes: determining the target power of the water pump according to the corrected first power and the corrected second power, and controlling the water pump to work at the target power.

[0009] In some specific embodiments, after the step of determining the target power of the water pump according to the first power and the second power, the step includes: obtaining the current ambient temperature of the vehicle's environment, and subtracting the preset basic ambient temperature from the current ambient temperature to obtain a difference temperature; determining a third power correction corresponding to the target power according to the difference temperature; wherein the difference temperature and the third power correction have a corresponding relationship; taking the sum of the target power and the third power correction as the corrected target power, and executing the step of controlling the water pump to operate at the target power; wherein, when the difference temperature is 0, the third power correction is 0, and when the difference temperature is greater than 0, the third power correction is greater than 0.

[0010] In some specific embodiments, after the step of determining the target power of the water pump according to the first power and the second power, the step includes: obtaining the current charging power corresponding to the energy receiver, and subtracting the preset basic charging power from the current charging power to obtain the difference power, and determining the fourth power correction corresponding to the target power according to the difference power; taking the sum of the target power and the fourth power correction as the corrected target power, and executing the step of controlling the water pump to operate at the target power; wherein the difference power and the fourth power correction have a corresponding relationship, and both the difference power and the fourth power correction are greater than 0.

[0011] In some specific embodiments, if the first current temperature is greater than the first temperature threshold and / or the second current temperature is greater than the second temperature threshold, then the target power of the water pump is determined according to the first current temperature and the second current temperature, and the water pump is controlled to operate at the target power. The steps include: detecting that the vehicle exits the wireless charging mode, obtaining the third current temperature of the energy receiver and the fourth current temperature of the coolant in the cooling circuit; if the third current temperature is greater than the first heat dissipation temperature and / or the fourth current temperature is greater than the second heat dissipation temperature, controlling the water pump to operate at a preset power; wherein the preset power is less than the target power; detecting that the third current temperature is less than the third heat dissipation temperature or the fourth current temperature is less than the fourth heat dissipation temperature, or the time for which the water pump operates at the preset power exceeds the preset time, then controlling the water pump to stop working.

[0012] In some specific embodiments, the thermal management system also includes a cooling fan; after detecting that the vehicle is in a wireless charging mode, the step of obtaining a first current temperature of the energy receiver and a second current temperature of the coolant in the cooling circuit includes: if the first current temperature is greater than a third temperature threshold and / or the second current temperature is greater than a fourth temperature threshold, determining a target power of the cooling fan based on the first current temperature and the second current temperature, and controlling the cooling fan to operate at the target power.

[0013] A second aspect of the present application provides a control device for a vehicle wireless charging thermal management system, including: an acquisition module, which detects that the vehicle is in a wireless charging mode, and then acquires a first current temperature of an energy receiver and a second current temperature of a coolant in a heat dissipation circuit; a control module, which is used to: if the first current temperature is greater than a first temperature threshold and / or the second current temperature is greater than a second temperature threshold, determine a target power of a water pump based on the first current temperature and the second current temperature, and control the water pump to operate at the target power.

[0014] A third aspect of the present application provides a computer-readable storage medium, in which a computer program is stored. When the computer program is executed by a processor, any of the above-mentioned control methods of the vehicle wireless charging thermal management system is implemented.

[0015] The present application has at least the following beneficial technical effects: Based on the control method, device and storage medium of the vehicle wireless charging thermal management system provided by the present application, the thermal management system includes a heat dissipation circuit for dissipating heat from the vehicle's energy receiver, and a water pump is provided in the heat dissipation circuit. The control method includes: when it is detected that the vehicle is in wireless charging mode, the first current temperature of the energy receiver and the second current temperature of the coolant in the heat dissipation circuit are obtained; if the first current temperature is greater than the first temperature threshold and / or the second current temperature is greater than the second temperature threshold, the target power of the water pump is determined according to the first current temperature and the second current temperature, and the water pump is controlled to operate at the target power. Therefore, by determining the target power of the water pump by the first current temperature and the second current temperature, the working state of the wireless charging system and the thermal management system is fully considered, and a good heat dissipation effect for the energy receiver can be achieved while saving energy.

[0016] 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

[0017] 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:

[0018] Figure 1 It is a structural schematic diagram of a vehicle wireless charging thermal management system;

[0019] Figure 2 It is a flow chart of an embodiment of a control method of a vehicle wireless charging thermal management system provided by the present application;

[0020] Figure 3 is a flow chart of another embodiment of a control method for a vehicle wireless charging thermal management system provided by the present application;

[0021] Figure 4 It is a flow chart of another embodiment of a control method of a vehicle wireless charging thermal management system provided by the present application;

[0022] Figure 5 It is a flow chart of another embodiment of a control method of a vehicle wireless charging thermal management system provided by the present application;

[0023] Figure 6 It is a flow chart of another embodiment of a control method of a vehicle wireless charging thermal management system provided by the present application;

[0024] Figure 7It is a flow chart of another embodiment of a control method of a vehicle wireless charging thermal management system provided by the present application;

[0025] Figure 8 It is a flow chart of another embodiment of a control method of a vehicle wireless charging thermal management system provided by the present application;

[0026] Fig. 9 It is a structural block diagram of a control device for a vehicle wireless charging thermal management system provided by the present application;

[0027] Fig.10 It is a schematic diagram of the structural framework of an embodiment of the computer-readable storage medium provided by the present application.

[0028] Explanation of the reference numerals: heat dissipation circuit 11 , main heat dissipation circuit 111 , first heat dissipation branch circuit 112 , second heat dissipation branch circuit 113 , water pump 12 , first radiator 121 , second radiator 122 , lower drive motor 141 , upper drive motor 142 , energy receiver 21 . DETAILED DESCRIPTION

[0029] The exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0030] If there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0031] The first aspect of the present application provides a control method for a vehicle wireless charging thermal management system, which is applied to a vehicle wireless charging thermal management system. Figure 1 It is a structural schematic diagram of a vehicle wireless charging thermal management system.

[0032] Combination Figure 1The wireless charging thermal management system includes a heat dissipation circuit 11 for dissipating heat from an energy receiver 21 of the vehicle. A water pump 12 is provided in the heat dissipation circuit 11. The water pump 12 is used to circulate the coolant in the heat dissipation circuit 11. The heat dissipation circuit 11 includes a heat dissipation main path 111, a first heat dissipation branch 112, and a second heat dissipation branch 113. The heat dissipation main path 111 is provided with a first radiator 121 and a second radiator 122. The first radiator 121 and the second radiator 122 are used to dissipate heat from the coolant in the heat dissipation main path 111. The first heat dissipation branch 112 and the second heat dissipation branch 113 are connected in parallel. The energy receiver 21 at the vehicle end of the wireless charging system of the vehicle is provided in the first heat dissipation branch 112.

[0033] Furthermore, a lower drive motor 141 may be provided in the first heat dissipation branch 112, and an upper drive motor 142 may be provided in the second heat dissipation branch 113. The first heat dissipation branch 112 and the second heat dissipation branch 113 are also used for heat dissipation of the lower drive motor 141 and the upper drive motor 142, respectively. At this time, the wireless charging thermal management system is actually the motor heat dissipation system of the vehicle, except that the energy receiver 21 is provided in the first heat dissipation branch 112, and the energy receiver 21 can be cooled by the coolant in the first heat dissipation branch 112.

[0034] Furthermore, the energy receiver 21 of the vehicle is part of the vehicle wireless charging system, which specifically includes a pile end, which includes a rectifier and voltage adjustment circuit, an inverter circuit, a transmission compensation network, a transmission coil, a controller and a communication module. The pile end is used to send charging energy to the energy receiver 21 at the vehicle end, thereby realizing wireless charging. Among them, the energy receiver 21 may include a vehicle-mounted receiving coil and related circuits.

[0035] During the wireless charging process of the vehicle, the energy receiver 21 of the vehicle will generate a lot of heat. At this time, it is necessary to control the heat dissipation circuit to dissipate the heat of the energy receiver 21. At this time, the coolant will also generate a lot of heat that needs to be dissipated through the radiator. After applying this method, a good heat dissipation effect can be achieved for the energy receiver 21 and the coolant while saving energy.

[0036] Figure 2 This is a flow chart of an embodiment of a control method of a vehicle wireless charging thermal management system provided by the present application, combined with Figure 2 , the method comprises the following steps:

[0037] S11: When it is detected that the vehicle is in the wireless charging mode, a first current temperature of the energy receiver and a second current temperature of the coolant in the heat dissipation circuit are obtained.

[0038] When the vehicle is in wireless charging mode, the wireless charging system charges the vehicle. At this time, the vehicle's energy receiver works and generates more heat.

[0039] The energy receiver is provided with a temperature sensor, and the current temperature of the energy receiver, i.e., the first current temperature, can be detected by the temperature sensor. Similarly, the heat dissipation circuit of the thermal management system is also provided with a temperature sensor, and the current temperature of the coolant, i.e., the second current temperature, can be detected.

[0040] S12: If the first current temperature is greater than the first temperature threshold and / or the second current temperature is greater than the second temperature threshold, determine the target power of the water pump according to the first current temperature and the second current temperature, and control the water pump to operate at the target power.

[0041] It should be understood that the first current temperature reflects the temperature of the energy receiver at the current moment, and reflects the urgency of the need for the energy receiver to dissipate heat. When the first current temperature is high, it means that the temperature of the energy receiver is high, and the need for heat dissipation of the energy receiver is more urgent. The second current temperature reflects the temperature of the coolant at the current moment, and reflects the urgency of the need for heat dissipation of the coolant. When the second current temperature is high, it means that the temperature of the coolant is high, and the need for heat dissipation of the coolant is more urgent.

[0042] The first temperature threshold and the second temperature threshold are preset. When the first current temperature is greater than the first temperature threshold, it indicates that the temperature of the energy receiver is high, and the water pump needs to be started so that the heat dissipation circuit circulates to dissipate heat to the energy receiver and the coolant. When the second current temperature is greater than the second temperature threshold, it indicates that the temperature of the coolant is high, and the water pump needs to be started so that the heat dissipation circuit circulates to dissipate heat to the energy receiver and the coolant.

[0043] In this step, if either or both of the two conditions, that the first current temperature is greater than the first temperature threshold and the second current temperature is greater than the second temperature threshold, the water pump needs to be started. In this step, if either or both of the two conditions are met, the water pump will not be directly controlled to work, but the target power of the water pump will be determined according to the first current temperature and the second current temperature, and then the water pump will be controlled to work according to the determined target power.

[0044] It should be understood that the first current temperature reflects the working state of the wireless charging system, specifically the heat dissipation requirements of the energy receiver. The second current temperature reflects the working state of the thermal management system, specifically the heat dissipation requirements of the coolant. This embodiment combines the first current temperature and the second current temperature to determine the target power of the water pump, which can fully take into account the working state of the wireless charging system and the thermal management system, that is, specifically take into account the heat dissipation requirements of the energy receiver and the coolant, so that the target power setting of the water pump is more reasonable, and thus can achieve good heat dissipation effect for the energy receiver and the coolant while saving energy.

[0045] Among them, the specific method for determining the target power of the water pump according to the first current temperature and the second current temperature can be a preset method, and this embodiment does not make specific restrictions. This embodiment mainly highlights the advantages of determining the target power by the first current temperature and the second current temperature.

[0046] Figure 3 FIG. 1 is a flow chart of another embodiment of a control method for a vehicle wireless charging thermal management system provided by the present application. Figure 3 In some specific embodiments, the step of determining the target power of the water pump according to the first current temperature and the second current temperature includes:

[0047] S21: If the first current temperature is greater than the first temperature threshold, the corresponding first power is determined according to the first preset temperature range of the first current temperature; if the second current temperature is greater than the second temperature threshold, the corresponding second power is determined according to the second preset temperature range of the second current temperature.

[0048] Specifically, when the first current temperature is less than or equal to the first temperature threshold, the first current temperature will not correspond to the first power. Similarly, when the second current temperature is less than or equal to the second temperature threshold, the second current temperature will not correspond to the second power. If the first current temperature is less than or equal to the first temperature threshold, and the second current temperature is greater than the second temperature threshold, then at this time the first current temperature does not correspond to the first power, and the second current temperature corresponds to a second power. At this time, the second power is directly used as the target power, and the water pump is controlled to work at the target power. Similarly, if the first current temperature is greater than or equal to the first temperature threshold, and the second current temperature is less than or equal to the second temperature threshold, then at this time the first current temperature corresponds to a first power, and the second current temperature does not correspond to the second power. At this time, the first power is used as the target power, and the water pump is controlled to work at the target power.

[0049] It should be understood that this embodiment determines the target power for application scenarios where the first power and the second power can be determined simultaneously, that is, for application scenarios where the first current temperature is greater than the first temperature threshold and the second current temperature is greater than the second temperature threshold.

[0050] Among them, different first preset temperature ranges correspond to different first powers, and the minimum value of the first preset temperature range is greater than the first temperature threshold. Different second preset temperature ranges correspond to different second powers, and the minimum value of the second preset temperature range is greater than the second temperature threshold. The first preset temperature range can be set to multiple, and multiple first preset temperature ranges constitute a continuous temperature range interval. Similarly, multiple second preset temperature ranges can also be set, and multiple second preset temperature ranges constitute a continuous temperature range interval. At this time, the higher the average temperature of the first preset temperature range, the higher the first power corresponding to it, and the higher the average temperature of the second preset temperature range, the higher the second power corresponding to it.

[0051] The following table is a schematic table showing that the first preset temperature range corresponds to the first power, and the second preset temperature range corresponds to the second power:

[0052]

[0053] The first power and the second power in the above table are expressed in duty cycle, that is, the duty cycle of the control signal used to control the water pump. The larger the duty cycle, the higher the power of the corresponding water pump. Although the preset temperature ranges in the above table overlap in writing, the preset temperature ranges do not overlap.

[0054] S22: Determine a target power of the water pump according to the first power and the second power, and control the water pump to operate at the target power.

[0055] The above steps determine the first power and the second power through the first current temperature and the second current temperature. This step further determines the target power of the water pump according to the first power and the second power.

[0056] This embodiment does not specifically limit the specific method of determining the target power of the water pump by using the first power and the second power. This embodiment highlights the specific method of determining the corresponding first power by the first current temperature and the corresponding second power by the second current temperature, and the idea of ​​determining the target power according to the first power and the second power.

[0057] Figure 4 FIG. 1 is a flow chart of another embodiment of a control method for a vehicle wireless charging thermal management system provided by the present application. Figure 4 In some specific embodiments, the step of determining the target power of the water pump according to the first power and the second power includes:

[0058] S31: If the first power is equal to the second power, the first power is used as the target power of the water pump.

[0059] In combination with the above table, the first power determined by the first current temperature may be the same as or different from the second power determined by the second current temperature. The first power reflects the power of the water pump corresponding to the heat dissipation requirement of the energy receiver, and the second power reflects the power of the water pump corresponding to the heat dissipation requirement of the coolant.

[0060] When the first power is equal to the second power, it means that the water pump working at the first power can simultaneously meet the heat dissipation requirements of the energy receiver and the coolant, so the first power is used as the target power of the water pump.

[0061] S32: If the first power is not equal to the second power, detecting whether the first current temperature is greater than the first preset temperature, and whether the second current temperature is greater than the second preset temperature.

[0062] When the first power is not equal to the second power, when the water pump works at either the first power or the second power, the heat dissipation demand of the energy receiver or the coolant cannot be met. At this time, we cannot simply select one of the first power and the second power as the target power, but need to further weigh and obtain the target power.

[0063] In this embodiment, we first detect whether the first current temperature is greater than the first preset temperature, and whether the second current temperature is greater than the second preset temperature. The first preset temperature may be a higher temperature in the first preset temperature range, and the second preset temperature may be a higher temperature in the second preset temperature range. For example, in combination with the above table, the first preset temperature may be set to 100°C, and the second preset temperature may be set to 63°C, but this is not limiting.

[0064] S33: If it is detected that the first current temperature is greater than the first preset temperature and / or the second current temperature is greater than the second preset temperature, the higher power value between the first power and the second power is used as the target power of the water pump; if it is detected that the first current temperature is less than or equal to the first preset temperature and the second current temperature is less than the second preset temperature, the average power of the first power and the second power is used as the target power of the water pump.

[0065] When the first current temperature is greater than the first preset temperature, and the second current temperature is greater than the second preset temperature, if either or both of the two conditions are met, it means that either or both of the energy receiver temperature and the coolant temperature are too high. At this time, one of them must have a higher demand for heat dissipation. In fact, the heat dissipation demand of the other should also be relatively high. At this time, the heat dissipation demand is relatively high for both the wireless charging system and the thermal management system. In this case, we use the higher power value of the first power and the second power as the target power of the water pump, thereby meeting the higher heat dissipation demand of the wireless charging system and the thermal management system.

[0066] When the first current temperature is less than or equal to the first preset temperature and the second current temperature is less than the second preset temperature, it means that the temperature of the energy receiver and the temperature of the coolant are not very high at this time, and the heat dissipation requirements of the energy receiver and the coolant are not very high. At this time, we use the average power of the first power and the second power as the target power of the water pump, which can achieve good heat dissipation effects for both while saving energy. For example, the first power obtained is a duty cycle of 60%, and the second power obtained is a duty cycle of 70%. Then, at this time, the power with a duty cycle of 65% can be used as the target power, which can well meet the heat dissipation requirements of the energy receiver. Since there is not much difference between 65% and 70%, it can also better meet the heat dissipation requirements of the corresponding coolant.

[0067] Figure 5 FIG. 1 is a flow chart of another embodiment of a control method for a vehicle wireless charging thermal management system provided by the present application. Figure 5 In some specific embodiments, if the first current temperature is greater than the first temperature threshold, then the corresponding first power is determined according to the first preset temperature range in which the first current temperature is located, and if the first current temperature is greater than the first temperature threshold, then the corresponding second power is determined according to the second preset temperature range in which the second current temperature is located, that is, after the above step S21, it includes:

[0068] S41: Acquire the current ambient temperature of the environment in which the vehicle is located, and subtract the preset basic ambient temperature from the current ambient temperature to obtain a differential temperature.

[0069] In the process of determining the first power and the second power, this embodiment adds a technical means of correcting the first power and the second power according to the ambient temperature, so that the first power and the second power are more adapted to the actual power demand under the current ambient temperature, thereby achieving better heat dissipation effect.

[0070] The preset basic ambient temperature may be an ambient temperature that is neither too high nor too low, for example, the preset basic ambient temperature may be set to 20°C.

[0071] S42: determining a first power correction amount corresponding to the first power according to the difference temperature, and determining a second power correction amount corresponding to the second power according to the difference temperature; wherein the difference temperature has a corresponding relationship with the first power correction amount and the second power correction amount.

[0072] The specific relationship between the difference temperature and the first power correction amount and the second power correction amount may be the corresponding relationship between the difference temperature range and the first power correction amount and the second power correction amount, respectively.

[0073] Multiple differential temperature ranges can be set, and the multiple differential temperature ranges correspond to multiple first power correction amounts and second power correction amounts respectively. Among them, when the differential temperature is 0, the first power correction amount and the second power correction amount are both 0. When the differential temperature is greater than 0, the first power correction amount and the second power correction amount are greater than 0, that is, the first power correction amount and the second power correction amount corresponding to the differential temperature range corresponding to the differential temperature greater than 0 are greater than 0. When the differential temperature is less than 0, the first power correction amount and the second power correction amount are less than 0, that is, the first power correction amount and the second power correction amount corresponding to the differential temperature range corresponding to the differential temperature less than 0 are less than 0.

[0074] Therefore, after the difference temperature is determined, the first power correction amount and the second power correction amount can be directly obtained according to the difference temperature range in which the difference temperature is located and the corresponding relationship between the difference temperature range and the first power correction amount and the second power correction amount.

[0075] S43: taking the sum of the first power and the first power correction amount as the corrected first power, and taking the sum of the second power and the second power correction amount as the corrected second power.

[0076] In combination with the above content, when the sum of the first power and the first power correction amount is used as the corrected first power, if the ambient temperature is higher than the preset basic ambient temperature, the difference temperature obtained is greater than 0, and the first power correction amount is greater than 0, and the corrected first power obtained will be greater than the first power before correction, so as to adapt to the higher heat dissipation requirements for the energy receiver when the ambient temperature is high. Conversely, when the ambient temperature is lower than the preset basic ambient temperature, the final corrected first power will be less than the first power before correction, which can meet the heat dissipation requirements for the energy receiver at a lower ambient temperature and achieve a good energy-saving effect.

[0077] Similarly, when the sum of the second power and the second power correction amount is used as the corrected second power, if the ambient temperature is higher than the preset basic ambient temperature, the obtained difference temperature is greater than 0, and the second power correction amount is greater than 0, the corrected second power obtained will be greater than the second power before correction, so as to adapt to the higher heat dissipation demand for the coolant when the ambient temperature is high. Similarly, when the ambient temperature is lower than the basic ambient temperature, the final corrected second power will be less than the second power before correction, which can meet the heat dissipation demand for the coolant at a lower ambient temperature and achieve a good energy-saving effect.

[0078] The step of combining the corrected first power and the second power, determining the target power of the water pump according to the first power and the second power, and controlling the water pump to operate at the target power, i.e., the above-mentioned step S22, includes:

[0079] The target power of the water pump is determined according to the corrected first power and the corrected second power, and the water pump is controlled to operate at the target power.

[0080] At this time, the target power is obtained based on the corrected first power and the corrected second power, so the target power refers to the ambient temperature and is more in line with the specific demand for the water pump power under the actual ambient temperature. Among them, the specific method of determining the target power of the water pump based on the corrected first power and the corrected second power is still applicable to the specific method of determining the target power of the water pump based on the first power and the second power in the above embodiment.

[0081] Figure 6 FIG. 1 is a flow chart of another embodiment of a control method for a vehicle wireless charging thermal management system provided by the present application. Figure 6 In some specific embodiments, after the step of determining the target power of the water pump according to the first power and the second power, the method further includes:

[0082] S51: Acquire the current ambient temperature of the environment in which the vehicle is located, and subtract the preset basic ambient temperature from the current ambient temperature to obtain a differential temperature.

[0083] This embodiment also corrects the power by the ambient temperature. The difference from the above embodiment is that this embodiment corrects the target power directly by the ambient temperature instead of correcting the first power and the second power.

[0084] The preset basic ambient temperature in this embodiment may be the same as or different from the preset basic ambient temperature in the above embodiment. For example, the preset ambient temperature in this embodiment may also be set to 20°C.

[0085] S52: Determine a third power correction amount corresponding to the target power according to the temperature difference; wherein the temperature difference and the third power correction amount have a corresponding relationship.

[0086] There is a corresponding relationship between the differential temperature and the third power correction amount, specifically, there is a corresponding relationship between the differential temperature range and the third power correction amount. The number of differential temperature ranges can be multiple, and they do not overlap with each other and constitute a continuous interval. Different differential temperature ranges correspond to different third power correction amounts.

[0087] Among them, when the difference temperature is 0, the third power correction amount is 0, and when the difference temperature is greater than 0, the third power correction amount is greater than 0. That is, when the current ambient temperature is equal to the preset basic ambient temperature, the third power correction amount is 0, and when the current ambient temperature is greater than the preset ambient temperature, since the energy receiver and the coolant have a higher heat dissipation requirement at this time, the third power correction amount is set to be greater than 0 at this time, so that the corrected target power obtained in the subsequent steps is greater than the target power before correction to meet the actual heat dissipation requirement. In addition, when the difference temperature is less than 0, the third power correction amount is less than 0, and when the current ambient temperature is less than the preset ambient temperature, since the energy receiver and the coolant have a lower heat dissipation requirement at this time, the third power correction amount can be set to be less than 0 in order to save energy.

[0088] S53: The sum of the target power and the third power correction amount is taken as the corrected target power, and a step of controlling the water pump to operate at the target power is executed.

[0089] The third correction amount is used to correct the target power so that the corrected target power fully considers the influence of the ambient temperature on the heat dissipation demand. After obtaining the corrected target power, the step of controlling the water pump to work at the target power is executed, that is, controlling the water pump to work at the corrected target power.

[0090] It should be understood that the above embodiment provides two ways of correcting power through ambient temperature, one is to correct the first power and the second power through ambient temperature, and the other is to correct the target power through ambient temperature. In the specific application process, one method can be selected for application, or both methods can be applied at the same time. Different application methods can set different power correction amounts, which are set according to specific circumstances.

[0091] Figure 7 FIG. 1 is a flow chart of another embodiment of a control method for a vehicle wireless charging thermal management system provided by the present application. Figure 7 In some specific embodiments, after the step of determining the target power of the water pump according to the first power and the second power, the method further includes:

[0092] S61: Obtain the current charging power corresponding to the energy receiver, subtract the preset basic charging power from the current charging power to obtain the difference power, and determine a fourth power correction amount corresponding to the target power according to the difference power.

[0093] The preset charging power is set in advance. The preset charging power may be a charging power that is neither too large nor too small, and may be a charging power that is frequently used.

[0094] Among them, there is a preset corresponding relationship between the difference power and the fourth power correction amount, and the difference power and the fourth power correction amount are both greater than 0. That is, when the difference power is less than or equal to 0, we set the fourth power correction amount to 0. Only when the difference power is greater than 0, the fourth power correction amount is greater than 0, that is, only when the current charging power is greater than the preset basic charging power, we will correct the target power. At this time, the larger the difference power, the larger the fourth power correction amount can be set, so as to adapt to the higher heat dissipation requirements of the larger charging power.

[0095] S62: The sum of the target power and the fourth power correction amount is taken as the corrected target power, and a step of controlling the water pump to operate at the target power is executed.

[0096] At this time, the step of controlling the water pump to operate at the target power is executed, that is, controlling the water pump to operate at the corrected target power.

[0097] In combination with the above content, the method of correcting the target power by charging power in this embodiment can be combined with the method of correcting the target power by ambient temperature described above, so as to obtain the target power corrected by the third power correction amount and the fourth power correction amount.

[0098] Figure 8 FIG. 1 is a flow chart of another embodiment of a control method for a vehicle wireless charging thermal management system provided by the present application. Figure 8 In some specific embodiments, if the first current temperature is greater than the first temperature threshold and / or the second current temperature is greater than the second temperature threshold, then after the step of determining the target power of the water pump according to the first current temperature and the second current temperature, and controlling the water pump to operate at the target power, that is, after the above step S12, the method includes:

[0099] S71: Detecting that the vehicle exits the wireless charging mode, obtaining a third current temperature of the energy receiver and a fourth current temperature of the coolant in the cooling circuit.

[0100] When the vehicle exits the wireless charging mode, it means that the energy receiver of the vehicle stops working. In order to understand whether to continue to make the thermal management system work, this step obtains the third current temperature of the energy receiver and the fourth current temperature of the coolant.

[0101] S72: If the third current temperature is greater than the first heat dissipation temperature and / or the fourth current temperature is greater than the second heat dissipation temperature, control the water pump to operate at a preset power; wherein the preset power is less than the target power.

[0102] The first heat dissipation temperature and the second heat dissipation temperature are both preset, and both can be relatively high temperatures. When the third current temperature is greater than the first heat dissipation temperature, and the fourth current temperature is greater than the second heat dissipation temperature, or both, it indicates that a heat dissipation circuit is required to circulate to dissipate heat for the energy receiver and / or the coolant. At this time, the water pump will be controlled to continue to work.

[0103] In some application scenarios, the first heat dissipation temperature may be set to 105° C., and the second heat dissipation temperature may be set to 64° C., but this is not limiting.

[0104] It should be understood that although the water pump needs to dissipate heat at this time, the heat dissipation requirement is not high. In order to save energy and reduce vehicle noise, the vehicle can be controlled to operate at a preset power that is less than the target power.

[0105] S73: If it is detected that the third current temperature is lower than the third heat dissipation temperature or the fourth current temperature is lower than the fourth heat dissipation temperature, or the water pump operates at a preset power for longer than a preset time, the water pump is controlled to stop operating.

[0106] The third heat dissipation temperature and the fourth heat dissipation temperature are preset, the third heat dissipation temperature is lower than the first heat dissipation temperature, and the fourth heat dissipation temperature is lower than the second heat dissipation temperature. In combination with the above content, the third heat dissipation temperature can be set to 95°C and the fourth heat dissipation temperature can be set to 62°C, but it is not limited thereto.

[0107] When it is detected that the third current temperature is less than the third heat dissipation temperature or the fourth current temperature is less than the fourth heat dissipation temperature, it means that the heat dissipation of the energy receiver and the coolant is sufficient at this time, and the water pump is controlled to stop working, that is, the heat dissipation of the thermal management system is stopped. If the third current temperature is greater than or equal to the third heat dissipation temperature and the fourth current temperature is greater than or equal to the fourth heat dissipation temperature, then the energy receiver and the coolant still need further heat dissipation, but for energy saving considerations, the water pump cannot be run all the time. Therefore, when the water pump works at the preset power for more than the preset time, the water pump is controlled to stop working. Among them, the preset time can be set to 60s, but it is not limited to this.

[0108] In some specific embodiments, the thermal management system also includes a cooling fan, which is arranged adjacent to the radiator of the thermal management system. The cooling fan forms a cooling airflow to blow toward the radiator, so that the heat dissipation of the radiator is better, thereby ensuring a good heat dissipation effect for the coolant.

[0109] At this time, if it is detected that the vehicle is in the wireless charging mode, after the step of obtaining the first current temperature of the energy receiver and the second current temperature of the coolant in the heat dissipation circuit, that is, after the above step S11, the following steps are included:

[0110] If the first current temperature is greater than the third temperature threshold and / or the second current temperature is greater than the fourth temperature threshold, the target power of the cooling fan is determined according to the first current temperature and the second current temperature, and the cooling fan is controlled to operate at the target power.

[0111] The third temperature threshold and the fourth temperature threshold can be set according to actual conditions. For example, the third temperature threshold can be set to 85° C., and the fourth temperature threshold can be set to 59° C.

[0112] Specifically, similar to the method of obtaining the first power and the second power in the above embodiment, this embodiment can set the corresponding relationship between the third preset temperature range and the third power, and set the corresponding relationship between the fourth preset temperature range and the fourth power. Then, the corresponding third preset temperature range is determined by the first current temperature to determine the corresponding third power, and the corresponding fourth preset temperature range is determined by the second current temperature to determine the corresponding fourth power. Further, the target power of the fan is obtained according to the third power and the fourth power. The method of obtaining the target power of the fan according to the third power and the fourth power can refer to the method of obtaining the target power of the water pump according to the first power and the second power in the above embodiment, and will not be repeated.

[0113] The following table is a schematic diagram of the corresponding relationship between the third preset temperature range and the third power and the corresponding relationship between the fourth preset temperature range and the fourth power:

[0114]

[0115] Similarly, for the third power and the third power, the duty cycle of the control signal is expressed, and the higher the duty cycle, the higher the corresponding power.

[0116] A second aspect of the present application provides a control device 30 for a vehicle wireless charging thermal management system, Fig. 9 It is a structural block diagram of the control device 30 of the vehicle wireless charging thermal management system provided by the present application.

[0117] Combination Fig. 9 The control device 30 of the vehicle wireless charging thermal management system includes an acquisition module 31 and a control module 32. The acquisition module 31 detects that the vehicle is in wireless charging mode, and then acquires the first current temperature of the energy receiver and the second current temperature of the coolant in the heat dissipation circuit. The control module 32 is used to: if the first current temperature is greater than the first temperature threshold and / or the second current temperature is greater than the second temperature threshold, determine the target power of the water pump according to the first current temperature and the second current temperature, and control the water pump to work at the target power. Among them, for the specific execution method of the above steps, you can refer to the relevant content of the above embodiment, and will not repeat it again.

[0118] A third aspect of the present application provides a computer-readable storage medium 40, Fig.10 It is a schematic diagram of the structural framework of an embodiment of the computer-readable storage medium 40 provided in the present application.

[0119] The computer readable storage medium 40 stores a computer program 41 , and when the computer program 41 is executed by a processor, a control method for a vehicle wireless charging thermal management system as in any of the above-mentioned embodiments is implemented.

[0120] It should be noted that the computer-readable medium 40 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. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which may send, propagate, or transmit programs for use by or in conjunction with an instruction execution system, apparatus, or device. The computer program contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0121] In summary, based on the control method, device and storage medium of the vehicle wireless charging thermal management system provided by the present application, the thermal management system includes a heat dissipation circuit for dissipating heat from the vehicle's energy receiver, and a water pump is provided in the heat dissipation circuit. The control method includes: when it is detected that the vehicle is in wireless charging mode, the first current temperature of the energy receiver and the second current temperature of the coolant in the heat dissipation circuit are obtained; if the first current temperature is greater than the first temperature threshold and / or the second current temperature is greater than the second temperature threshold, the target power of the water pump is determined according to the first current temperature and the second current temperature, and the water pump is controlled to operate at the target power. Therefore, by determining the target power of the water pump by the first current temperature and the second current temperature, the working state of the wireless charging system and the thermal management system is fully considered, and a good heat dissipation effect for the energy receiver can be achieved while saving energy.

[0122] 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 control method for a vehicle wireless charging thermal management system, characterized in that: The thermal management system comprises a heat dissipation circuit for dissipating heat from the energy receiver of the vehicle, wherein a water pump is arranged in the heat dissipation circuit, and the control method comprises: When detecting that the vehicle is in a wireless charging mode, obtaining a first current temperature of the energy receiver and a second current temperature of the coolant in the heat dissipation circuit; If the first current temperature is greater than a first temperature threshold and / or the second current temperature is greater than a second temperature threshold, the target power of the water pump is determined according to the first current temperature and the second current temperature, and the water pump is controlled to operate at the target power.

2. The control method according to claim 1, characterized in that: The step of determining the target power of the water pump according to the first current temperature and the second current temperature includes: If the first current temperature is greater than a first temperature threshold, a corresponding first power is determined according to a first preset temperature range in which the first current temperature is located; if the second current temperature is greater than a second temperature threshold, a corresponding second power is determined according to a second preset temperature range in which the second current temperature is located; determining a target power of the water pump according to the first power and the second power, and controlling the water pump to operate at the target power; Among them, different first preset temperature ranges correspond to different first powers, and the first preset temperature range with a higher average temperature corresponds to a higher first power, and different second preset temperature ranges correspond to different second powers, and the second preset temperature range with a higher average temperature corresponds to a higher second power.

3. The control method according to claim 2, characterized in that: The step of determining the target power of the water pump according to the first power and the second power comprises: If the first power is equal to the second power, taking the first power as the target power of the water pump; If the first power is not equal to the second power, detecting whether the first current temperature is greater than a first preset temperature, and whether the second current temperature is greater than a second preset temperature; If it is detected that the first current temperature is greater than the first preset temperature and / or the second current temperature is greater than the second preset temperature, the higher power value between the first power and the second power is used as the target power of the water pump; If it is detected that the first current temperature is less than or equal to the first preset temperature and the second current temperature is less than the second preset temperature, the average power of the first power and the second power is used as the target power of the water pump.

4. The control method according to claim 2, characterized in that: If the first current temperature is greater than a first temperature threshold, then determining a corresponding first power according to a first preset temperature range in which the first current temperature is located, and if the first current temperature is greater than the first temperature threshold, then determining a corresponding second power according to a second preset temperature range in which the second current temperature is located, the method further comprises: Acquire the current ambient temperature of the environment in which the vehicle is located, and subtract a preset basic ambient temperature from the current ambient temperature to obtain a differential temperature; Determine a first power correction amount corresponding to the first power according to the difference temperature, and determine a second power correction amount corresponding to the second power according to the difference temperature; wherein the difference temperature has a corresponding relationship with the first power correction amount and the second power correction amount; taking the sum of the first power and the first power correction amount as the corrected first power, and taking the sum of the second power and the second power correction amount as the corrected second power; Wherein, when the temperature difference is 0, the first power correction amount and the second power correction amount are both 0, when the temperature difference is greater than 0, the first power correction amount and the second power correction amount are greater than 0, and when the temperature difference is less than 0, the first power correction amount and the second power correction amount are less than 0; The step of determining a target power of the water pump according to the first power and the second power, and controlling the water pump to operate at the target power includes: The target power of the water pump is determined according to the corrected first power and the corrected second power, and the water pump is controlled to operate at the target power.

5. The control method according to claim 2, characterized in that: After the step of determining the target power of the water pump according to the first power and the second power, the method includes: Acquire the current ambient temperature of the environment in which the vehicle is located, and subtract a preset basic ambient temperature from the current ambient temperature to obtain a differential temperature; Determining a third power correction amount corresponding to the target power according to the temperature difference; wherein the temperature difference and the third power correction amount have a corresponding relationship; The sum of the target power and the third power correction amount is used as the corrected target power, and the step of controlling the water pump to operate at the target power is performed; Wherein, when the temperature difference is 0, the third power correction amount is 0, and when the temperature difference is greater than 0, the third power correction amount is greater than 0.

6. The control method according to claim 1, characterized in that: After the step of determining the target power of the water pump according to the first power and the second power, the method includes: Acquire a current charging power corresponding to the energy receiver, subtract a preset basic charging power from the current charging power to obtain a difference power, and determine a fourth power correction amount corresponding to the target power according to the difference power; The sum of the target power and the fourth power correction amount is used as the corrected target power, and the step of controlling the water pump to operate at the target power is performed; The difference power and the fourth power correction amount have a corresponding relationship, and both the difference power and the fourth power correction amount are greater than 0.

7. The control method according to claim 1, characterized in that: If the first current temperature is greater than a first temperature threshold and / or the second current temperature is greater than a second temperature threshold, after the step of determining the target power of the water pump according to the first current temperature and the second current temperature, and controlling the water pump to operate at the target power, the method further comprises: detecting that the vehicle exits the wireless charging mode, acquiring a third current temperature of the energy receiver and a fourth current temperature of the coolant in the cooling circuit; If the third current temperature is greater than the first heat dissipation temperature and / or the fourth current temperature is greater than the second heat dissipation temperature, the water pump is controlled to operate at a preset power; wherein the preset power is less than the target power; If it is detected that the third current temperature is lower than the third heat dissipation temperature or the fourth current temperature is lower than the fourth heat dissipation temperature, or the water pump operates at the preset power for longer than a preset time, the water pump is controlled to stop operating.

8. The control method according to claim 1, characterized in that: The thermal management system further includes a cooling fan; after detecting that the vehicle is in the wireless charging mode, the step of obtaining a first current temperature of the energy receiver and a second current temperature of the coolant in the cooling circuit includes: If the first current temperature is greater than a third temperature threshold and / or the second current temperature is greater than a fourth temperature threshold, a target power of the cooling fan is determined according to the first current temperature and the second current temperature, and the cooling fan is controlled to operate at the target power.

9. A control device for a vehicle wireless charging thermal management system, characterized in that: include: an acquisition module, detecting that the vehicle is in a wireless charging mode, and acquiring a first current temperature of the energy receiver and a second current temperature of the coolant in the heat dissipation circuit; A control module is used to: if the first current temperature is greater than a first temperature threshold and / or the second current temperature is greater than a second temperature threshold, determine the target power of the water pump according to the first current temperature and the second current temperature, and control the water pump to operate at the target power.

10. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by the processor, the control method of the vehicle wireless charging thermal management system according to any one of claims 1 to 8 is implemented.

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