A water pump control method and related products

Abstract

The present application discloses a water pump control method and related products. The water pump is applied to a vehicle-mounted air-conditioning system; the first inlet of the water pump is connected to the water outlet of the engine, and a first circuit is formed between the first inlet and the outlet of the water pump through a pipeline; the second inlet of the water pump is connected to the water outlet of the electric heating device, and a second circuit is formed between the second inlet and the outlet of the water pump through a pipeline. The method includes: determining the target heating mode of the vehicle-mounted air-conditioning system; controlling the target circuit corresponding to the target heating mode to be connected according to the target heating mode, the first water temperature at the first inlet, and the second water temperature at the second inlet; the target circuit is the first circuit or the second circuit; and controlling the operation of the water pump according to the target heating mode and the water temperature at the inlet corresponding to the target circuit. In this way, the operation of the water pump can be directly controlled, thereby reducing the time delay in the control logic of the water pump by active control and improving the intelligence level of the vehicle-mounted air-conditioning system.

Description

Technical Field

[0001] The present application relates to the field of air conditioning technology, and in particular to a water pump control method and related products. Background Art

[0002] With the rapid development of the automotive industry, cars have become an indispensable means of transportation. Naturally, users' requirements for vehicle use have also continued to increase. To meet user needs, vehicle designers have made many improvements and designs to vehicles, such as the design of onboard air conditioning systems, which can provide users with a comfortable driving environment.

[0003] For example, a car air conditioning system uses a water pump to circulate water throughout the system, achieving heat exchange. However, most current water pumps operate passively. This means that a main controller controls the terminal equipment in the car air conditioning system, causing changes in the system's parameters. The water pump is then controlled based on these changes. This passive control approach introduces a certain amount of delay in the water pump's control logic, resulting in a relatively lagging control process. This results in a low level of intelligence in the car air conditioning system and poor control effectiveness. Summary of the Invention

[0004] The embodiments of the present application provide a water pump control method and related products, which aim to reduce the time delay in the control logic of the water pump and improve the intelligence level of the vehicle air-conditioning system.

[0005] In a first aspect, an embodiment of the present application provides a water pump control method, wherein the water pump is applied to a vehicle air conditioning system; a first inlet of the water pump is connected to a water outlet of an engine, and a first circuit is formed between the first inlet and the outlet of the water pump via a pipeline; a second inlet of the water pump is connected to a water outlet of an electric heating device, and a second circuit is formed between the second inlet and the outlet of the water pump via a pipeline; the method comprises:

[0006] determining a target heating mode of the vehicle air conditioning system;

[0007] According to the target heating mode, the first water temperature at the first inlet, and the second water temperature at the second inlet, controlling the target circuit corresponding to the target heating mode to be connected; the target circuit is the first circuit or the second circuit;

[0008] The water pump is controlled to operate according to the target heating mode and the water temperature at the inlet corresponding to the target circuit.

[0009] Optionally, controlling the target circuit corresponding to the target heating mode to be connected according to the target heating mode, the first water temperature at the first inlet, and the second water temperature at the second inlet includes:

[0010] Determining, according to the target heating mode, a preset water temperature difference corresponding to the target heating mode; the preset water temperature difference includes a first preset water temperature difference and a second preset water temperature difference which are opposite to each other, and the first preset water temperature difference is greater than the second preset water temperature difference;

[0011] When the water temperature difference between the first water temperature and the second water temperature is greater than or equal to the first preset water temperature difference, determining that the target circuit is the first circuit, and controlling the first circuit to be connected;

[0012] When the water temperature difference between the first water temperature and the second water temperature is less than or equal to the second preset water temperature difference, the target circuit is determined to be the second circuit, and the second circuit is controlled to be connected.

[0013] Optionally, controlling the operation of the water pump according to the target heating mode and the water temperature at the inlet corresponding to the target circuit includes:

[0014] According to the target heating mode, determining a preset water temperature range corresponding to the target heating mode;

[0015] According to the preset water temperature range and the water temperature at the inlet corresponding to the target circuit, the rotation speed of the water pump is adjusted to control the flow rate of the target circuit.

[0016] Optionally, determining a target heating mode of the vehicle air-conditioning system includes:

[0017] determining a heating requirement of the vehicle based on an ambient temperature of a driving environment of the vehicle and a battery temperature of a power battery system of the vehicle;

[0018] According to the heating demand, a heating mode corresponding to the heating demand is determined as the target heating mode.

[0019] Optionally, determining, according to the heating demand, a heating mode corresponding to the heating demand as the target heating mode includes:

[0020] When the heating demand indicates that the driving environment needs to be heated, determining the target heating mode to be a first heating mode; the first heating mode is used to heat the driving environment;

[0021] When the heating demand indicates that the power battery system needs to be heated, determining the target heating mode to be a second heating mode; the second heating mode is used to heat the power battery system;

[0022] When the heating demand indicates that both the driving environment and the power battery system need to be heated, the target heating mode is determined according to a heating priority between the driving environment and the power battery system.

[0023] Optionally, the heating priority is determined by the following steps:

[0024] acquiring a temperature difference between an ambient temperature of the driving environment and a target ambient temperature as a first temperature difference, and acquiring a temperature difference between a battery temperature of the power battery system and the target battery temperature as a second temperature difference;

[0025] The heating priority is determined according to the first temperature difference and the second temperature difference.

[0026] Optionally, determining the heating requirement of the vehicle based on the ambient temperature of the driving environment and the battery temperature of the power battery system includes:

[0027] When the ambient temperature of the driving environment is lower than the target ambient temperature, determining that the heating demand is that the driving environment needs to be heated;

[0028] When the battery temperature of the power battery system is lower than the target battery temperature, it is determined that the heating demand means that the power battery system needs to be heated.

[0029] In a second aspect, an embodiment of the present application provides a water pump, which is applied to a vehicle air conditioning system; the water pump includes a water pump control unit;

[0030] The first inlet of the water pump is connected to the water outlet of the engine, and a first loop is formed between the first inlet and the outlet of the water pump through a pipeline;

[0031] The second inlet of the water pump is connected to the water outlet of the electric heating device, and a second loop is formed between the second inlet and the outlet of the water pump through a pipeline;

[0032] The water pump control unit is used to execute any implementation of the above water pump control method.

[0033] In a third aspect, an embodiment of the present application provides a water pump control device, the device comprising: a processor, a memory, and a system bus;

[0034] The processor and the memory are connected via the system bus;

[0035] The memory is used to store one or more programs, and the one or more programs include instructions. When the instructions are executed by the processor, the processor executes any implementation of the water pump control method.

[0036] In a fourth aspect, an embodiment of the present application provides a vehicle, including an on-board air-conditioning system; the on-board air-conditioning system is equipped with the above-mentioned water pump.

[0037] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0038] In an embodiment of the present application, the first inlet of the water pump can be connected to the water outlet of the engine, and a first circuit is formed between the first inlet and the outlet of the water pump through a pipeline; the second inlet of the water pump is connected to the water outlet of the electric heating device, and a second circuit is formed between the second inlet and the outlet of the water pump through a pipeline. Based on this structure, after determining the target heating mode of the vehicle air-conditioning system, the target circuit corresponding to the target heating mode can be controlled to be connected according to the target heating mode, the first water temperature at the first inlet, and the second water temperature at the second inlet, and then the operation of the water pump can be controlled according to the target heating mode and the water temperature at the inlet of the target circuit. In this way, the operation of the water pump can be directly controlled by the target heating mode and the water temperature at the two inlets of the water pump, thereby reducing the time delay in the control logic of the water pump by active control and improving the intelligence level of the vehicle air-conditioning system. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A schematic structural diagram of a water pump provided in an embodiment of the present application;

[0040] Figure 2 A schematic structural diagram of another water pump provided in an embodiment of the present application;

[0041] Figure 3 A flow chart of a water pump control method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] As mentioned earlier, most current water pumps operate using a passive control method. This means that a main controller controls the terminal equipment in the vehicle air conditioning system, causing changes in the relevant parameters of the vehicle air conditioning system. The water pump is then controlled based on these changes. This passive control method can introduce a certain delay in the water pump control logic, resulting in a relatively lagging control process. This results in a low level of intelligence in the vehicle air conditioning system and poor control effectiveness.

[0043] To address the above-mentioned issues, an embodiment of the present application provides a water pump control method, wherein the first inlet of the water pump can be connected to the water outlet of the engine, and a first circuit is formed between the first inlet and the outlet of the water pump via a pipeline; the second inlet of the water pump is connected to the water outlet of the electric heating device, and a second circuit is formed between the second inlet and the outlet of the water pump via a pipeline. Based on this structure, the water pump control method can specifically include: after determining the target heating mode of the vehicle air conditioning system, the target circuit corresponding to the target heating mode can be controlled to be connected according to the target heating mode, the first water temperature at the first inlet, and the second water temperature at the second inlet. Then, the water pump operation can be controlled according to the target heating mode and the water temperature at the inlet of the target circuit.

[0044] In this way, the water pump operation can be directly controlled by the target heating mode and the water temperature at the two inlets of the water pump, thereby using active control to reduce the time delay in the water pump control logic and improve the intelligence level of the vehicle air-conditioning system.

[0045] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0046] Figure 1 A schematic structural diagram of a water pump provided in an embodiment of the present application; Figure 2 This is a schematic diagram of the structure of another water pump provided in an embodiment of the present application. This water pump can be used in a vehicle air conditioning system. Figure 1 and Figure 2 As shown, in the water pump 10 provided in the embodiment of the present application, a first inlet 11, a second inlet 12 and an outlet 13 may be provided.

[0047] The first inlet 11 is connected to the water outlet of the engine (not shown in the figure), and a first loop 14 is formed between the first inlet 11 and the outlet 13 via a pipeline;

[0048] The second inlet 12 is connected to a water outlet of the electric heating device (not shown in the figure), and a second loop 15 is formed between the second inlet 12 and the outlet 13 via a pipeline.

[0049] As can be seen, in the embodiment of the present application, the vehicle air conditioning system can specifically include two heat sources. When the first circuit 14 is connected, the water medium flowing out of the engine water outlet can serve as a heat source, circulating in the first circuit 14 to provide heat. When the second circuit 15 is connected, the water medium flowing out of the electric heating device outlet can serve as another heat source, circulating in the second circuit 15 to provide heat. In this way, the electric heating device can be used to quickly provide heat, improving heating efficiency, while the waste heat of the water flowing out of the engine can also be used to provide heat, achieving energy conservation and environmental protection while providing heating.

[0050] To achieve switching control between the first circuit 14 and the second circuit 15, the water pump 10 may further include a water valve 20 for switching the circuits. In the embodiment of the present application, various embodiments may be provided for the location of the water valve 20, which are described below by way of example.

[0051] As an example, the water valve 20 may specifically include a first water valve provided at the first inlet 11 and a second water valve provided at the second inlet 12. Thus, when the first circuit 14 needs to be connected, the first water valve can be controlled to open and the second water valve can be controlled to close; when the second circuit 15 needs to be connected, the first water valve can be controlled to close and the second water valve can be controlled to open.

[0052] As another example, the water valve 20 may specifically include a reversing valve disposed at the outlet 13. Thus, when the first circuit 14 needs to be connected, the reversing valve can be controlled to switch to a direction for connecting the first circuit 14; and when the second circuit 15 needs to be connected, the reversing valve can be controlled to switch to a direction for connecting the second circuit 15.

[0053] Based on the control logic of the water valve 20, the water pump 10 may further include a water pump control unit 16. The water pump control unit 16 and the water valve 20 may be connected via wired and / or wireless communication, allowing the water pump control unit 16 to directly control the opening and closing of the water valve 20. This actively reduces the time delay in the water pump control logic and improves the intelligence of the vehicle air conditioning system. The wireless communication method may include at least one of Wi-Fi, Bluetooth, and ZigBee.

[0054] Specifically, the specific control logic of the water pump control unit 16 controlling the switch of the water valve 20 and the operation of the water pump 10 can be reflected as follows: after the water pump control unit 16 determines the target heating mode of the vehicle air-conditioning system, it can control the connection of the target circuit corresponding to the target heating mode according to the target heating mode, the first water temperature at the first inlet 11, and the second water temperature at the second inlet 12, that is, control the water valve used to connect the target circuit, and then control the operation of the water pump 10 according to the target heating mode and the water temperature at the inlet of the target circuit.

[0055] Accordingly, to implement the aforementioned control logic, the water pump 10 may further include a first water temperature sensor 17 and a second water temperature sensor 18, each of which is communicatively connected to the water pump control unit 16. The first water temperature sensor 17 may be located at the first inlet 11 to detect the temperature of the water flowing into the first inlet 11; the second water temperature sensor 18 may be located at the second inlet 12 to detect the temperature of the water flowing into the second inlet 12. In this manner, the first water temperature is acquired by the first water temperature sensor 17, and the second water temperature is acquired by the second water temperature sensor 18. These data are then transmitted to the water pump control unit 16, allowing the water pump control unit 16 to implement logical control of the water pump 10 based on the first and second water temperatures.

[0056] Furthermore, in the embodiment of the present application, the operation of the water pump 10 can be controlled by adjusting the rotational speed of the water pump 10, thereby adjusting the flow rate within the target circuit. Therefore, the water pump 10 can further include a flow sensor 19. The flow sensor 19 is communicatively connected to the water pump control unit 16 and is disposed at the outlet 13.

[0057] In view of the above-mentioned special water pump structure and control logic, the embodiment of the present application can further provide a water pump control method, which is implemented by using the water pump control unit as the execution subject of the described scheme. The water pump control method is described below in conjunction with the embodiments and drawings.

[0058] Figure 3 This is a flow chart of the water pump control method provided in the embodiment of the present application. Figure 3 As shown, the water pump control method may specifically include:

[0059] S301: Determine a target heating mode for the vehicle air conditioning system.

[0060] The target heating mode can include a first heating mode and a second heating mode. The first heating mode is used to heat the vehicle's driving environment. Specifically, in the first heating mode, a water pump drives a water medium to circulate through the vehicle's air conditioning system, thereby heating the air blowing out of the vehicle's air conditioning system outlet and achieving heating of the driving environment. The second heating mode can be used to heat the power battery system. Specifically, in the second heating mode, a water pump drives a water medium to circulate, thereby heating the power battery system located close to the vehicle's air conditioning system, thereby achieving heating of the power battery system.

[0061] In the embodiment of the present application, multiple implementations can be provided for the process of determining the target heating mode, that is, S301 , which are described below with examples.

[0062] As an example, if a vehicle air conditioning system is equipped with a human-computer interaction device, the user can use the human-computer interaction device to send a control instruction including a target heating mode to the vehicle air conditioning system's main controller, which then sends the instruction to the water pump control unit to obtain the target heating mode. The human-computer interaction device can be a remote control device operated manually or by voice, or a touch screen.

[0063] As another example, in order to simplify user operations and improve the intelligence of the vehicle, the vehicle's heating requirements can be determined first through the ambient temperature of the vehicle's driving environment and the battery temperature of the vehicle's power battery system, and then the heating mode corresponding to the heating requirement can be determined as the target heating mode based on the heating requirement.

[0064] Specifically, determining the heating requirement may include: determining the heating requirement as requiring heating of the driving environment when the ambient temperature of the driving environment is less than a target ambient temperature; and determining the heating requirement as requiring heating of the power battery system when the battery temperature of the power battery system is less than a target battery temperature. For the driving environment, the ambient temperature can be acquired by one or more temperature sensors located in the driving environment, such as the cockpit and / or passenger compartment. The target ambient temperature can be pre-set by the user, determined based on historical user preferences, or determined based on big data collected from a user group in the region. For the power battery system, the battery temperature can be acquired by one or more temperature sensors located within the power battery system. The target battery temperature can represent the ideal operating temperature of the power battery system, and its specific value can be pre-set at the factory. Thus, by determining the relationship between the ambient temperature of the driving environment and the target ambient temperature, as well as the relationship between the battery temperature of the power battery system and the target battery temperature, the vehicle's heating requirement can be conveniently and accurately determined, thereby enhancing the vehicle's intelligence.

[0065] Furthermore, the process for determining the heating mode corresponding to the heating demand may specifically include: when the heating demand indicates that the driving environment requires heating, determining the target heating mode to be the first heating mode; when the heating demand indicates that the power battery system requires heating, determining the target heating mode to be the second heating mode; and when the heating demand indicates that both the driving environment and the power battery system require heating, determining the target heating mode based on the heating priority between the driving environment and the power battery system. In this way, the vehicle air conditioning system can support heating either the driving environment or the power battery system independently. Furthermore, when both the driving environment and the power battery system require heating, the target heating mode can be further determined based on the priority logic between the two, thereby improving the intelligence of the water pump.

[0066] Accordingly, the embodiment of the present application may not limit the method for determining the heating priority between the driving environment and the power battery system, for example, it may be set before the vehicle leaves the factory or by the user. It should be noted that in order to further improve the intelligence level of the vehicle, the embodiment of the present application may also provide a possible implementation method for illustration.

[0067] In one possible implementation, the heating priority can be determined by the following steps: obtaining the temperature difference between the ambient temperature of the driving environment and the target ambient temperature as a first temperature difference, and obtaining the temperature difference between the battery temperature of the power battery system and the target battery temperature as a second temperature difference; and determining the heating priority based on the first and second temperature differences. It can be understood that a larger temperature difference indicates a more urgent heating demand, and therefore a higher heating priority; a smaller temperature difference indicates a slower heating demand, and therefore a lower heating priority. Thus, in this priority logic, the temperature difference between the actual temperature and the target temperature can be used to determine the urgency of the heating demand, thereby determining the heating priority of the two.

[0068] S302: Controlling the target circuit corresponding to the target heating mode to be connected according to the target heating mode, the first water temperature at the first inlet, and the second water temperature at the second inlet.

[0069] Here, the target circuit is the first circuit or the second circuit. As mentioned above, the first circuit refers to the circulation circuit between the first inlet of the water pump and the outlet of the water pump, and the first inlet is connected to the water outlet of the engine; the second circuit refers to the circulation circuit between the second inlet of the water pump and the outlet of the water pump, and the second inlet is connected to the water outlet of the electric heating device. It can be seen that in the embodiment of the present application, the target circuit can be selected and its connectivity can be controlled according to the target heating mode, the first water temperature and the second water temperature. In this way, the operation of the water pump can be directly controlled by the target heating mode and the water temperature at the two inlets of the water pump, thereby reducing the time delay in the control logic of the water pump by active control and improving the intelligence level of the vehicle air-conditioning system.

[0070] The implementation process of controlling the target loop connectivity, that is, S302, is not specifically limited in the present embodiment.

[0071] In a possible embodiment, S302 may specifically include: determining a preset water temperature difference corresponding to the target heating mode according to the target heating mode; when the water temperature difference between the first water temperature and the second water temperature is greater than or equal to the first preset water temperature difference, determining that the target circuit is the first circuit, and controlling the first circuit to be connected; when the water temperature difference between the first water temperature and the second water temperature is less than or equal to the second preset water temperature difference, determining that the target circuit is the second circuit, and controlling the second circuit to be connected.

[0072] In an embodiment of the present application, the preset water temperature difference includes a first preset water temperature difference and a second preset water temperature difference, which are opposite numbers to each other, and the first preset water temperature difference is greater than the second preset water temperature difference. As mentioned above, the vehicle air conditioning system can specifically include two heat sources, one is the waste heat of the water flowing out of the engine, and the other is the heat generated by the electric heating device, and the heat source of the first circuit is the water flowing out of the engine, and the heat source of the second circuit is the water flowing out of the electric heating device. That is, when the water temperature difference between the first water temperature and the second water temperature is greater than or equal to the first preset water temperature difference, the first circuit can provide more heat than the second circuit, so the first circuit can be used for heating, achieving energy saving and environmental protection; and when the water temperature difference between the first water temperature and the second water temperature is less than or equal to the opposite number of the first preset water temperature difference, that is, the second preset water temperature difference, the second circuit can provide more heat than the first circuit, so the second circuit can be used for heating, achieving a rapid heating effect. Furthermore, when the air temperature from the vehicle's air conditioning system's outlet is greater than or equal to 45°C, the air at the user's location can be heated to above 20°C, thereby meeting the appropriate temperature for the driving environment. The temperature required to maintain stable operation of the power battery system is generally between 25°C and 35°C. In other words, the first heating mode, used to heat the vehicle's driving environment, requires more heat to drive than the second heating mode, used to heat the power battery system. Therefore, the first preset water temperature difference corresponding to the first heating mode is greater than the first preset water temperature difference corresponding to the second heating mode, and the second preset water temperature difference corresponding to the first heating mode is less than the second preset water temperature difference corresponding to the second heating mode.

[0073] S303: Control the operation of the water pump according to the target heating mode and the water temperature at the inlet corresponding to the target circuit.

[0074] In an embodiment of the present application, S303 may specifically include: determining a preset water temperature range corresponding to the target heating mode according to the target heating mode; adjusting the rotation speed of the water pump according to the preset water temperature range and the water temperature at the inlet corresponding to the target circuit to control the flow of the target circuit. The inlet corresponding to the target circuit includes the first inlet or the second inlet of the water pump. When the target circuit is the first circuit, the inlet corresponding to the target circuit is the first inlet; when the target circuit is the second circuit, the inlet corresponding to the target circuit is the second inlet. In this way, the flow of the target circuit is adjusted by adjusting the rotation speed of the water pump, so that the water medium can circulate in the target circuit at a suitable flow rate, thereby reducing the time delay in the control logic of the water pump by active control, improving the heating efficiency, and improving the intelligence level of the vehicle air-conditioning system.

[0075] It should be noted that the lower the water temperature at the inlet corresponding to the target circuit, the smaller the flow rate of the target circuit can be, thereby allowing the water medium with a lower water temperature to circulate slowly in the target circuit, improving the heating effect; the higher the water temperature at the inlet corresponding to the target circuit, the larger the flow rate of the target circuit can be, thereby allowing the water medium with a higher water temperature to circulate quickly in the target circuit, improving the heating efficiency. In addition, for ease of understanding, the embodiment of the present application can provide a possible implementation method for illustrating the process of adjusting the speed of the water pump.

[0076] In one possible embodiment, the preset water temperature range may include at least a first preset water temperature range and a second preset water temperature range; the water temperature value within the first preset water temperature range is less than the water temperature value within the second preset water temperature range. Correspondingly, according to the preset water temperature range and the water temperature at the inlet corresponding to the target circuit, the rotation speed of the water pump is adjusted to control the flow of the target circuit, which may include: when the water temperature at the inlet corresponding to the target circuit is within the first preset water temperature range, adjusting the rotation speed of the water pump to control the flow of the target circuit to be a first flow; when the water temperature at the inlet corresponding to the target circuit is within the second preset water temperature range, adjusting the rotation speed of the water pump to control the flow of the target circuit to be a second flow; the second flow is greater than the first flow. It should be noted that the embodiment of the present application is only described by way of example using two preset water temperature ranges, and the actual number of preset water temperature ranges is not specifically limited here. Of course, the more preset water temperature ranges there are, the finer the rotation speed adjustment and the more accurate the control of heating efficiency.

[0077] As mentioned earlier, when the air blowing out of the vehicle's air conditioning system's air outlet is greater than or equal to 45°C, the air at the user's location can be heated to above 20°C, thereby meeting the appropriate temperature for the driving environment. The temperature required to maintain stable operation of the power battery system is generally between 25°C and 35°C. In other words, the first heating mode used to heat the vehicle's driving environment requires more heat to drive than the second heating mode used to heat the power battery system. In view of this, each preset water temperature range in the first heating mode can be greater than the corresponding preset water temperature range in the second heating mode. In other words, the first preset water temperature range in the first heating mode can be greater than the first preset water temperature range in the second heating mode; and the second preset water temperature range in the first heating mode can be greater than the second preset water temperature range in the second heating mode.

[0078] In addition, the value of the preset water temperature range may not be specifically limited. For ease of understanding, the embodiments of the present application may provide examples of specific application processes for illustration. For technical details, please refer to the following introduction.

[0079] Based on the relevant content of S301 - S303 above, it can be known that in the embodiments of the present application, the first inlet of the water pump can be connected to the engine water outlet, and a first circuit is formed between the first inlet and the outlet of the water pump through a pipeline; the second inlet of the water pump is connected to the water outlet of the electric heating device, and a second circuit is formed between the second inlet and the outlet of the water pump through a pipeline. Based on this structure, after determining the target heating mode of the vehicle-mounted air conditioning system, the target circuit corresponding to the target heating mode can be controlled according to the target heating mode, the first water temperature at the first inlet, and the second water temperature at the second inlet. Then, the operation of the water pump can be controlled according to the target heating mode and the water temperature at the inlet of the target circuit. In this way, the operation of the water pump can be directly controlled by the target heating mode and the water temperatures at the two inlets of the water pump, thereby reducing the time delay existing in the control logic of the water pump by an active control method and improving the intelligence level of the vehicle-mounted air conditioning system.

[0080] Furthermore, the embodiments of the present application can also illustrate the above water pump control method in combination with specific values to introduce the water pump control method in the actual application process. The following will be illustrated respectively in combination with two different heating modes, that is, the first heating mode and the second heating mode.

[0081] In one case, the target heating mode is the first heating mode for heating the driving environment. Correspondingly, the water pump control method provided by the embodiments of the present application can be illustrated respectively according to connecting two different circuits, that is, connecting the first circuit and connecting the second circuit. The water pump control method for connecting the first circuit may include steps 41A - step 42A:

[0082] Step 41A: When T1 - T2 ≥ 10°C, control the first circuit to be connected.

[0083] Step 42A: When T1 ≤ 40°C, control the flow rate of the first circuit to be 5 liters per minute by adjusting the speed of the water pump;

[0084] When 40°C < T1 ≤ 65°C, control the flow rate of the first circuit to be 10 liters per minute by adjusting the speed of the water pump;

[0085] When 65°C < T1 ≤ 85°C, control the flow rate of the first circuit to be 15 liters per minute by adjusting the speed of the water pump;

[0086] When T1 > 85°C, control the flow rate of the first circuit to be 20 liters per minute by adjusting the speed of the water pump.

[0087] The water pump control method for connecting the second circuit may include steps 41B - step 42B:

[0088] Step 41B: When T1 - T2 ≤ -10°C, control the second circuit to be connected. <000019(0>

[0089] Step 42B: When T2 ≤ 40°C, control the flow rate of the first loop to be 5 liters per minute by adjusting the speed of the water pump;

[0090] When 40°C < T2 ≤ 65°C, control the flow rate of the first loop to be 10 liters per minute by adjusting the speed of the water pump;

[0091] When 65°C < T2 ≤ 85°C, control the flow rate of the first loop to be 15 liters per minute by adjusting the speed of the water pump;

[0092] When T2 > 85°C, control the flow rate of the first loop to be 20 liters per minute by adjusting the speed of the water pump.

[0093] In another case, the target heating mode is the second heating mode for heating the power battery system. Correspondingly, the water pump control method provided in the embodiments of the present application can also be described separately according to connecting two different loops, that is, connecting the first loop and connecting the second loop. Among them, the water pump control method for connecting the first loop can include Step 51A - Step 52A:

[0094] Step 51A: When T1 - T2 ≥ 5°C, control the first loop to be connected.

[0095] Step 52A: When T1 ≤ 25°C, control the flow rate of the first loop to be 5 liters per minute by adjusting the speed of the water pump;

[0096] When 25°C < T1 ≤ 35°C, control the flow rate of the first loop to be 8 liters per minute by adjusting the speed of the water pump;

[0097] When 35°C < T1 ≤ 45°C, control the flow rate of the first loop to be 12 liters per minute by adjusting the speed of the water pump;

[0098] When T1 > 45°C, control the flow rate of the first loop to be 15 liters per minute by adjusting the speed of the water pump.

[0099] The water pump control method for connecting the second loop can include Step 51B - Step 52B:

[0100] Step 51B: When T1 - T2 ≤ -5°C, control the second loop to be connected.

[0101] Step 52B: When T2 ≤ 25°C, control the flow rate of the first loop to be 5 liters per minute by adjusting the speed of the water pump;

[0102] When 25°C < T2 ≤ 35°C, control the flow rate of the first loop to be 87 liters per minute by adjusting the speed of the water pump;

[0103] When 35°C < T2 ≤ 45°C, by adjusting the rotational speed of the water pump, the flow rate of the first loop is controlled to be 12 liters per minute;

[0104] When T2 > 45°C, by adjusting the rotational speed of the water pump, the flow rate of the first loop is controlled to be 20 liters per minute.

[0105] It should be noted that in the above embodiments, T1 represents the first water temperature and T2 represents the second water temperature.

[0106] In the embodiments of the present application, after determining the target heating mode of the vehicle air-conditioning system, the connection of the target loop can be controlled first according to the relationship between the temperature difference between the first water temperature and the second water temperature and the preset temperature difference, and then the operation of the water pump can be controlled according to the preset temperature range corresponding to the target heating mode and the water temperature at the inlet corresponding to the target loop. In this way, the operation of the water pump can be directly controlled through the target heating mode and the water temperatures at the two inlets of the water pump, thereby reducing the time delay existing in the control logic of the water pump by an active control method and improving the intelligence level of the vehicle air-conditioning system.

[0107] Furthermore, the embodiments of the present application also provide a water pump control device, including: a processor, a memory, and a system bus;

[0108] The processor and the memory are connected through the system bus;

[0109] The memory is used to store one or more programs, and the one or more programs include instructions, and when the instructions are executed by the processor, the processor executes any one of the above-mentioned implementation manners of the water pump control method.

[0110] Furthermore, the embodiments of the present application also provide a vehicle, which may include a vehicle air-conditioning system. Among them, the vehicle air-conditioning system is configured with any one of the above-mentioned embodiments of the water pump.

[0111] It should be noted that the various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments can be referred to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0112] It should also be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0113] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A water pump control method, characterized in that: The water pump is applied to a vehicle air conditioning system; a first inlet of the water pump is connected to a water outlet of an engine, and a first circuit is formed between the first inlet and the outlet of the water pump via a pipeline; The second inlet of the water pump is connected to the water outlet of the electric heating device, and a second loop is formed between the second inlet and the outlet of the water pump through a pipeline; the method includes: determining a target heating mode of the vehicle air conditioning system, the target heating mode including a first heating mode and a second heating mode, the first heating mode being used to heat a driving environment of the vehicle, and the second heating mode being used to heat a power battery system; According to the target heating mode, the first water temperature at the first inlet, and the second water temperature at the second inlet, controlling the target circuit corresponding to the target heating mode to be connected; the target circuit is the first circuit or the second circuit; controlling the operation of the water pump according to the target heating mode and the water temperature at the inlet corresponding to the target circuit; The controlling the target circuit corresponding to the target heating mode to be connected according to the target heating mode, the first water temperature at the first inlet, and the second water temperature at the second inlet includes: Determining, according to the target heating mode, a preset water temperature difference corresponding to the target heating mode; the preset water temperature difference includes a first preset water temperature difference and a second preset water temperature difference which are opposite to each other, and the first preset water temperature difference is greater than the second preset water temperature difference; When the water temperature difference between the first water temperature and the second water temperature is greater than or equal to the first preset water temperature difference, determining that the target circuit is the first circuit, and controlling the first circuit to be connected; When the water temperature difference between the first water temperature and the second water temperature is less than or equal to the second preset water temperature difference, the target circuit is determined to be the second circuit, and the second circuit is controlled to be connected.

2. The method according to claim 1, characterized in that The step of controlling the water pump to operate according to the target heating mode and the water temperature at the inlet corresponding to the target circuit includes: According to the target heating mode, determining a preset water temperature range corresponding to the target heating mode; According to the preset water temperature range and the water temperature at the inlet corresponding to the target circuit, the rotation speed of the water pump is adjusted to control the flow rate of the target circuit.

3. The method according to claim 1 or 2, characterized in that Determining the target heating mode of the vehicle air conditioning system includes: determining a heating requirement of the vehicle based on an ambient temperature of a driving environment of the vehicle and a battery temperature of a power battery system of the vehicle; According to the heating demand, a heating mode corresponding to the heating demand is determined as the target heating mode.

4. The method according to claim 3, characterized in that The step of determining, according to the heating demand, a heating mode corresponding to the heating demand as the target heating mode includes: When the heating demand indicates that the driving environment needs to be heated, determining the target heating mode to be a first heating mode; the first heating mode is used to heat the driving environment; When the heating demand indicates that the power battery system needs to be heated, determining the target heating mode to be a second heating mode; the second heating mode is used to heat the power battery system; When the heating demand indicates that both the driving environment and the power battery system need to be heated, the target heating mode is determined according to a heating priority between the driving environment and the power battery system.

5. The method according to claim 4, characterized in that The heating priority is determined by the following steps: acquiring a temperature difference between an ambient temperature of the driving environment and a target ambient temperature as a first temperature difference, and acquiring a temperature difference between a battery temperature of the power battery system and a target battery temperature as a second temperature difference; The heating priority is determined according to the first temperature difference and the second temperature difference.

6. The method according to claim 3, characterized in that The determining the heating requirement of the vehicle based on the ambient temperature of the driving environment and the battery temperature of the power battery system includes: When the ambient temperature of the driving environment is lower than the target ambient temperature, determining that the heating demand is that the driving environment needs to be heated; When the battery temperature of the power battery system is lower than the target battery temperature, it is determined that the heating demand means that the power battery system needs to be heated.

7. A water pump, characterized in that: The water pump is applied to a vehicle air conditioning system; the water pump includes a water pump control unit; The first inlet of the water pump is connected to the water outlet of the engine, and a first loop is formed between the first inlet and the outlet of the water pump through a pipeline; The second inlet of the water pump is connected to the water outlet of the electric heating device, and a second loop is formed between the second inlet and the outlet of the water pump through a pipeline; The water pump control unit is used to execute the water pump control method according to any one of claims 1 to 6.

8. A water pump control device, characterized in that: The device includes: a processor, a memory, and a system bus; The processor and the memory are connected via the system bus; The memory is used to store one or more programs, wherein the one or more programs include instructions, and when the instructions are executed by the processor, the processor executes the water pump control method according to any one of claims 1 to 6.

9. A vehicle, characterized in that: It comprises a vehicle-mounted air-conditioning system; the vehicle-mounted air-conditioning system is equipped with the water pump according to claim 7.

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