Method and device for determining opening degree of electronic expansion valve for vehicle, and electronic device

Abstract

This application provides a method, device, and electronic device for determining the opening degree of an electronic expansion valve for vehicles, relating to the field of vehicle control technology. This method can determine the opening degree of a first electronic expansion valve and a second electronic expansion valve based on air conditioning control requests, battery pack temperature control requests, and adjustment parameters. Since the opening degree of the first electronic expansion valve and the second electronic expansion valve is determined by air conditioning control requests and battery pack temperature control requests, the stability of the method for determining the opening degree of an electronic expansion valve for vehicles is relatively high, thereby making the heat pump air conditioning system more stable.

Description

Technical Field

[0001] This application relates to the field of vehicle control technology, specifically to a method, device, and electronic equipment for determining the opening degree of an electronic expansion valve for vehicles. Background Technology

[0002] To meet the requirements of passenger cabin comfort, powertrain safety, and overall vehicle range, pure electric vehicles are generally equipped with a heat pump air conditioning system. The first and second electronic expansion valves are core components of the entire air conditioning heat pump system. On one hand, they regulate the circulation of refrigerant throughout the system, controlling the superheat at the heat exchanger outlet to prevent liquid slugging in the compressor; on the other hand, they throttle and reduce the pressure of the refrigerant to facilitate heat absorption. Furthermore, the first and second electronic expansion valves must meet the needs of passenger cabin cooling, passenger cabin heating, and battery pack cooling, requiring sufficiently precise opening control to coordinate different scenarios.

[0003] Therefore, there is an urgent need for a method to determine the opening degree of an electronic expansion valve for vehicles that takes into account the needs of passenger compartment cooling, passenger compartment heating, and battery pack cooling. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, this application provides a method, device and electronic device for determining the opening degree of an automotive electronic expansion valve to solve the above-mentioned technical problems.

[0005] This application provides a method for determining the opening degree of an electronic expansion valve for vehicles, including:

[0006] Obtain air conditioning control requests, battery pack temperature control requests, and adjustment parameters;

[0007] The first opening degree, the second opening degree, the third opening degree, and the fourth opening degree are determined according to the adjustment parameters.

[0008] Based on the air conditioning control request, the battery pack temperature control request, and the adjustment parameters, the opening degree of the first electronic expansion valve is determined among the first opening degree, the second opening degree, and the preset opening degree, and the opening degree of the second electronic expansion valve is determined among the third opening degree, the fourth opening degree, and the preset opening degree.

[0009] Opening degree and fourth opening degree, including:

[0010] A first deviation is determined based on the evaporator temperature and the target evaporator temperature in the adjustment parameters, and a first opening degree is determined based on the first deviation.

[0011] The second deviation is determined based on the evaporator outlet superheat and the target evaporator outlet superheat in the adjustment parameters, and the second opening degree is determined based on the second deviation.

[0012] The third deviation is determined based on the battery inlet water temperature and the target battery inlet water temperature in the adjustment parameters, and the third opening degree is determined based on the third deviation.

[0013] The fourth deviation is determined based on the battery cooler outlet superheat and the target battery cooler outlet superheat in the adjustment parameters, and the fourth opening degree is determined based on the fourth deviation.

[0014] In one embodiment of the present invention, determining the opening degree of a first electronic expansion valve among the first opening degree, the second opening degree, and the preset opening degree based on the air conditioning control request, the battery pack temperature control request, and the adjustment parameters, and determining the opening degree of a second electronic expansion valve among the third opening degree, the fourth opening degree, and the preset opening degree, includes:

[0015] When the air conditioning request includes both a heating request and a cooling request, the first opening degree is determined as the opening degree of the first electronic expansion valve, and the fourth opening degree is determined as the opening degree of the second electronic expansion valve.

[0016] In one embodiment of the present invention, determining the opening degree of a first electronic expansion valve among the first opening degree, the second opening degree, and the preset opening degree based on the air conditioning control request, the battery pack temperature control request, and the adjustment parameters, and determining the opening degree of a second electronic expansion valve among the third opening degree, the fourth opening degree, and the preset opening degree, includes:

[0017] When the air conditioning request is a heating request, the preset opening degree is used as the opening degree of the first electronic expansion valve, and the fourth opening degree is determined as the opening degree of the second electronic expansion valve.

[0018] In one embodiment of the present invention, determining the opening degree of a first electronic expansion valve among the first opening degree, the second opening degree, and the preset opening degree based on the air conditioning control request, the battery pack temperature control request, and the adjustment parameters, and determining the opening degree of a second electronic expansion valve among the third opening degree, the fourth opening degree, and the preset opening degree, includes:

[0019] When the air conditioning request is a cooling request, the battery pack temperature control request is a battery pack cooling request, and the battery water temperature in the adjustment parameters is greater than the target water temperature, the first opening degree is determined as the opening degree of the first electronic expansion valve, and the fourth opening degree is determined as the opening degree of the second electronic expansion valve.

[0020] In one embodiment of the present invention, determining the opening degree of a first electronic expansion valve among the first opening degree, the second opening degree, and the preset opening degree based on the air conditioning control request, the battery pack temperature control request, and the adjustment parameters, and determining the opening degree of a second electronic expansion valve among the third opening degree, the fourth opening degree, and the preset opening degree, includes:

[0021] When the air conditioning request is a cooling request, the battery pack temperature control request is a no-control request, and the battery water temperature is greater than the target water temperature, the second opening degree is determined as the opening degree of the first electronic expansion valve, and the preset opening degree is determined as the opening degree of the second electronic expansion valve.

[0022] In one embodiment of the present invention, determining the opening degree of a first electronic expansion valve among the first opening degree, the second opening degree, and the preset opening degree based on the air conditioning control request, the battery pack temperature control request, and the adjustment parameters, and determining the opening degree of a second electronic expansion valve among the third opening degree, the fourth opening degree, and the preset opening degree, includes:

[0023] When the air conditioning request is a cooling request, the battery pack temperature control request is a battery pack cooling request, and the battery water temperature is less than or equal to the target water temperature, the second opening degree is determined as the opening degree of the first electronic expansion valve, and the third opening degree is determined as the opening degree of the second electronic expansion valve.

[0024] In one embodiment of the present invention, determining the opening degree of a first electronic expansion valve among the first opening degree, the second opening degree, and the preset opening degree based on the air conditioning control request, the battery pack temperature control request, and the adjustment parameters, and determining the opening degree of a second electronic expansion valve among the third opening degree, the fourth opening degree, and the preset opening degree, includes:

[0025] When the air conditioning request is for no cooling or heating, and the battery pack temperature control request is for battery pack cooling, the preset opening degree is determined as the opening degree of the first electronic expansion valve, and the fourth opening degree is determined as the opening degree of the second electronic expansion valve.

[0026] To achieve the above and other related objectives, this application provides a device for determining the opening degree of an electronic expansion valve for vehicles, comprising:

[0027] The data acquisition module is used to acquire air conditioning control requests, battery pack temperature control requests, and adjustment parameters;

[0028] The first opening degree determination module is used to determine the first opening degree, the second opening degree, the third opening degree, and the fourth opening degree according to the adjustment parameters;

[0029] The second opening degree determination module is used to determine the opening degree of the first electronic expansion valve in the first opening degree and the second opening degree according to the air conditioning control request, the battery pack temperature control request and the adjustment parameters, and to determine the opening degree of the second electronic expansion valve in the third opening degree and the fourth opening degree.

[0030] To achieve the above and other related objectives, this application also provides an electronic device, the electronic device comprising:

[0031] One or more processors;

[0032] A storage device for storing one or more programs, which, when executed by one or more processors, cause the electronic device to implement the method for determining the opening degree of an electronic expansion valve for vehicles as described in any of the foregoing embodiments.

[0033] To achieve the above and other related objectives, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a computer's processor, causes the computer to perform the method for determining the opening degree of an electronic expansion valve for vehicles as described in any of the foregoing embodiments.

[0034] As described above, the method, apparatus, and electronic device for determining the opening degree of an automotive electronic expansion valve provided in this application have the following beneficial effects:

[0035] This application discloses a method for determining the opening degree of an electronic expansion valve for vehicles. This method acquires an air conditioning control request, a battery pack temperature control request, and adjustment parameters. Based on the adjustment parameters, it determines a first opening degree, a second opening degree, a third opening degree, and a fourth opening degree. Finally, based on the air conditioning control request, the battery pack temperature control request, and the adjustment parameters, it determines the opening degree of the first electronic expansion valve from the first opening degree, the second opening degree, and a preset opening degree. The second electronic expansion valve opening degree is determined from the third opening degree, the fourth opening degree, and the preset opening degree. This method allows for the determination of the opening degrees of the first and second electronic expansion valves based on the air conditioning control request, the battery pack temperature control request, and the adjustment parameters. Because the opening degrees of the first and second electronic expansion valves are determined using the air conditioning control request and the battery pack temperature control request, the stability of the method for determining the opening degree of the electronic expansion valve for vehicles is high, thereby improving the stability of the heat pump air conditioning system.

[0036] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0037] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings:

[0038] Figure 1 This is a flowchart illustrating an exemplary embodiment of the present application of a method for determining the opening degree of an electronic expansion valve for vehicles;

[0039] Figure 2This is a flowchart illustrating another method for determining the opening degree of an electronic expansion valve for vehicles, as shown in an exemplary embodiment of this application;

[0040] Figure 3 This is a block diagram illustrating a heat pump air conditioning system as an exemplary embodiment of this application.

[0041] Figure 4 This is a block diagram illustrating an automotive electronic expansion valve opening determination device, as shown in an exemplary embodiment of this application. Detailed Implementation

[0042] The embodiments of this application will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be understood that the preferred embodiments are only for illustrating this application and are not intended to limit the scope of protection of this application.

[0043] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. Therefore, the drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0044] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the present application. However, it will be apparent to those skilled in the art that embodiments of the present application may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the present application.

[0045] Please see Figure 1 , Figure 1 This is a flowchart illustrating a method for determining the opening degree of an electronic expansion valve for vehicles, as shown in an exemplary embodiment of this application. (Reference) Figure 1 It can be seen that the method for determining the opening degree of the vehicle's electronic expansion valve may include:

[0046] Step S110: Obtain the air conditioning control request, the battery pack temperature control request, and the adjustment parameters.

[0047] In one embodiment of this application, an air conditioning control request, a battery pack temperature control request, and adjustment parameters can be obtained. The air conditioning control request may include a heating request, a cooling request, and a heating request without cooling. The battery pack temperature control request may include a cooling request and a no-control request. An air conditioning request may simultaneously include both cooling and heating requests, in which case the air conditioning is heating but the vehicle's interior humidity needs to be adjusted.

[0048] Step S120: Determine the first opening degree, the second opening degree, the third opening degree, and the fourth opening degree according to the adjustment parameters.

[0049] In one embodiment of this application, the adjustment parameters may include evaporator temperature, evaporator target temperature, evaporator outlet superheat, evaporator outlet target superheat, battery inlet water temperature, battery inlet target water temperature, battery cooler outlet superheat, battery cooler outlet target superheat, battery water temperature, and target water temperature. The evaporator temperature, evaporator outlet superheat, battery inlet water temperature, battery cooler outlet superheat, and battery water temperature can be acquired by various sensors installed in the heat pump air conditioning system. The evaporator target temperature, evaporator outlet target superheat, battery inlet target water temperature, battery cooler outlet target superheat, and target water temperature can be preset by the operator according to the characteristics of the vehicle and the heat pump air conditioning system installed in the vehicle.

[0050] In an exemplary embodiment, step S120, which determines the first opening degree, the second opening degree, the third opening degree, and the fourth opening degree according to the adjustment parameters, may include steps S121 to S124.

[0051] Step S121: Determine the first deviation based on the evaporator temperature and the target evaporator temperature in the adjustment parameters, and determine the first opening degree based on the first deviation.

[0052] In one embodiment of this application, a first deviation can be determined based on the evaporator temperature and the target evaporator temperature, and a first opening degree can be determined based on the first deviation and formulas (1), (2), (3), and (4). First deviation = evaporator temperature - target evaporator temperature.

[0053] NCC n1 =NCC n1-1 +NCC e1 (1)

[0054] NCC e1 =A n1 +B n1 (2)

[0055] A n1 =P cc1 *M1; (3)

[0056] B n1 =I cc1 *M1+B n1-1 (4)

[0057] Among them, NCC n1 As the first opening degree at the current moment, NCC n1-1 The first opening degree at the previous moment (this value is 0 when the first opening degree is calculated for the first time), M1 first deviation, P cc1 For the first calibration P parameter, I cc1 This is the first calibration I parameter. That is, the NCC is calculated based on PI. e1 .

[0058] In one embodiment of this application, P cc1 Calibration can be performed based on the blower's airflow rating and ambient temperature. cc1 Calibration can be performed based on the blower's air volume rating and multiple preset first deviations.

[0059] Step S122: Determine the second deviation based on the evaporator outlet superheat and the target evaporator outlet superheat in the adjustment parameters, and determine the second opening degree based on the second deviation.

[0060] In one embodiment of this application, a second deviation can be determined based on the evaporator outlet superheat and the target evaporator outlet superheat, and a second opening degree can be determined based on the second deviation and formulas (5), (6), (7), and (8). Second deviation = evaporator outlet superheat - evaporator outlet target superheat.

[0061] NCC n2 =NCC n2 -1+NCC e2 (5)

[0062] NCC e2 =A n2 +B n2 (6)

[0063] A n2 =P cc2 *M2; (7)

[0064] B n2 =I cc2 *M2+B n2 -1; (8)

[0065] Among them, NCC n2 For the second opening at the current moment, NCC n2 -1 represents the second opening at the previous moment, M2 represents the second deviation, and P represents... cc2 For the second calibration P parameter, I cc2This is the second calibration I parameter.

[0066] In one embodiment of this application, P cc2 and I cc2 Calibration can be performed based on multiple preset second deviations.

[0067] Step S123: Determine the third deviation based on the battery inlet water temperature and the target battery inlet water temperature in the adjustment parameters, and determine the third opening degree based on the third deviation.

[0068] In one embodiment of this application, a third deviation can be determined based on the battery inlet water temperature and the target battery inlet water temperature, and a third opening degree can be determined based on the third deviation and formulas (9), (10), (11), and (12). Third deviation = battery inlet water temperature - battery inlet target water temperature.

[0069] NCC n3 =NCC n3-1 +NCC e3 (9)

[0070] NCC e3 =A n3 +B n3 (10)

[0071] A n3 =P cc3 *M3; (11)

[0072] B n3 =I cc3 *M3+B n3-1 (12)

[0073] Among them, NCC n3 The third opening at the current moment, NCC n3 -1 represents the third opening at the previous moment, M3 represents the third deviation, and P represents the third deviation. cc3 For the third calibration P parameter, I cc3 This is the third calibration parameter I.

[0074] In one embodiment of this application, P cc3 Calibration can be performed based on the battery's internal temperature and the ambient temperature. cc3 Calibration can be performed based on the blower's air volume rating and multiple preset first deviations.

[0075] Step S124: Determine the fourth deviation based on the battery cooler outlet superheat and the target superheat of the battery cooler outlet in the adjustment parameters, and determine the fourth opening degree based on the fourth deviation.

[0076] In one embodiment of this application, a fourth deviation can be determined based on the battery cooler outlet superheat and the battery cooler outlet target superheat, and a fourth opening degree can be determined based on the fourth deviation and formulas (13), (14), (15), and (16). Fourth deviation = battery cooler outlet superheat - battery cooler outlet target superheat.

[0077] NCC n4 =NCC n4-1 +NCC e4 (13)

[0078] NCC e4 =A n4 +B n4 (14)

[0079] A n4 =P cc4 *M4; (15)

[0080] B n4 =I cc4 *M4+B n4-1 (16)

[0081] Among them, NCC n4 The fourth opening at the current moment, NCC n4 -1 represents the fourth opening at the previous moment, M4 represents the fourth deviation, and P represents the fourth deviation. cc4 For the fourth calibration P parameter, I cc4 This is the fourth calibration parameter I.

[0082] In one embodiment of this application, P cc2 and I cc2 Calibration can be performed based on multiple preset fourth deviations.

[0083] Step S130: Based on the air conditioning control request, the battery pack temperature control request, and the adjustment parameters, determine the opening degree of the first electronic expansion valve among the first opening degree, the second opening degree, and the preset opening degree, and determine the opening degree of the second electronic expansion valve among the third opening degree, the fourth opening degree, and the preset opening degree.

[0084] In an exemplary embodiment, step S130, which determines the opening degree of the first electronic expansion valve in the first opening degree and the second opening degree based on the air conditioning control request, the battery pack temperature control request, and the adjustment parameters, and determines the opening degree of the second electronic expansion valve in the third opening degree and the fourth opening degree, may include steps S131 to S136.

[0085] Step S131: When the air conditioning request includes both heating and cooling requests, the first opening degree is determined as the opening degree of the first electronic expansion valve, and the fourth opening degree is determined as the opening degree of the second electronic expansion valve.

[0086] In one embodiment of this application, the battery pack temperature control request can be any one of no control request, battery pack heating request, or battery pack cooling request. When the air conditioning request includes both heating and cooling requests, the ambient temperature of the vehicle is low and the humidity inside the vehicle needs to be changed. If the battery pack temperature control request is a battery pack cooling request, the battery pack temperature can be mainly adjusted through other circuits (e.g., water circuit). The second electronic expansion valve can be used for auxiliary adjustment. Therefore, the battery pack temperature control request can be disregarded in step S131. As long as the air conditioning request includes both heating and cooling requests, step S131 can be executed to adjust the opening of the first electronic expansion valve and the opening of the second electronic expansion valve.

[0087] Step S132: When the air conditioner requests heating, the preset opening degree is used as the opening degree of the first electronic expansion valve, and the fourth opening degree is determined as the opening degree of the second electronic expansion valve.

[0088] In one embodiment of this application, when the air conditioning request is a heating request, the ambient temperature of the vehicle is low, so the battery pack temperature control request can be disregarded. The preset opening degree can be used as the first electronic expansion valve opening degree, and the fourth opening degree can be determined as the second electronic expansion valve opening degree.

[0089] For example, the preset opening can be 0.

[0090] Step S133: When the air conditioner requests cooling, the battery pack temperature control requests cooling, and the battery water temperature in the adjustment parameters is greater than the target water temperature, the first opening degree is determined as the opening degree of the first electronic expansion valve, and the fourth opening degree is determined as the opening degree of the second electronic expansion valve.

[0091] In one embodiment of this application, when the air conditioning request is a cooling request, the battery pack temperature control request is a battery pack cooling request, and the battery water temperature in the adjustment parameters is greater than the target water temperature, the passenger compartment and the battery pack both need cooling. However, since the vehicle battery pack cooling has a higher priority than air conditioning cooling, the temperature of the battery cooler needs to be used as the main adjustment parameter.

[0092] Step S134: When the air conditioner request is a cooling request, the battery pack temperature control request is a no-control request, and the battery water temperature is greater than the target water temperature, the second opening degree is determined as the opening degree of the first electronic expansion valve, and the preset opening degree is determined as the opening degree of the second electronic expansion valve.

[0093] In one embodiment of this application, when the air conditioning request is a cooling request, the battery pack temperature control request is a no-control request (that is, the battery pack does not need to cool), and the battery water temperature is greater than the target water temperature, the second opening degree can be determined as the opening degree of the first electronic expansion valve, and the preset opening degree can be determined as the opening degree of the second electronic expansion valve.

[0094] Step S135: When the air conditioner requests cooling, the battery pack temperature control requests cooling, and the battery water temperature is less than or equal to the target water temperature, the second opening degree is determined as the opening degree of the first electronic expansion valve, and the third opening degree is determined as the opening degree of the second electronic expansion valve.

[0095] Step S136: When the air conditioner requests no cooling or heating, and the battery pack temperature control requests battery pack cooling, the preset opening degree is determined as the opening degree of the first electronic expansion valve, and the fourth opening degree is determined as the opening degree of the second electronic expansion valve.

[0096] In this embodiment, the battery pack temperature is controlled by the opening degree of the second electronic expansion valve.

[0097] Please see Figure 2 This is a flowchart of another method for determining the opening degree of an electronic expansion valve for vehicles provided in the embodiments of this application.

[0098] After determining the opening degree of the first electronic expansion valve and the second electronic expansion valve, the compressor speed can be controlled to adjust the temperature of the heating core to the target temperature of the heating core, or the compressor speed can be controlled to adjust the temperature of the evaporator to the target temperature of the evaporator, or the compressor speed can be controlled to adjust the temperature of the battery inlet water to the target temperature of the battery inlet water.

[0099] Figure 3 This is a block diagram of a heat pump air conditioning system provided in an embodiment of this application. The opening degree of the first electronic expansion valve and the second electronic expansion valve in the heat pump air conditioning system can be determined using the vehicle electronic expansion valve opening degree determination method provided in an embodiment of this application.

[0100] The heat pump air conditioning system mainly consists of a low-temperature radiator 301, a blower 302, an evaporator 303, a heater core 304, a first electronic expansion valve 305, a battery pack 306, a second electronic expansion valve 307, a battery cooler 308, an electric compressor 309, a water-cooled condenser 310, and a motor heat exchanger 311. The refrigerant flowing between the evaporator 303, the first electronic expansion valve 305, the second electronic expansion valve 307, the battery cooler 308, the electric compressor 309, and the water-cooled condenser 310 is refrigerant, typically R134a or R1234yf type refrigerant. Automotive antifreeze flows between the low-temperature radiator 301, the heater core 304, and the water-cooled condenser 310; automotive antifreeze also flows between the battery pack 306, the battery cooler 308, and the motor heat exchanger 311.

[0101] The first electronic expansion valve 305 and the second electronic expansion valve 307 are core components of the entire air conditioning heat pump system. On the one hand, they regulate the circulation of refrigerant throughout the system, control the superheat at the heat exchanger outlet, and prevent liquid slugging in the compressor. On the other hand, they throttle and reduce the pressure of the refrigerant to facilitate its heat absorption. Furthermore, the first electronic expansion valve 305 and the second electronic expansion valve 307 must meet the needs of multiple functions, including passenger compartment cooling, passenger compartment heating, and battery pack cooling.

[0102] In summary, the method of this application embodiment obtains air conditioning control requests, battery pack temperature control requests, and adjustment parameters, and determines a first opening degree, a second opening degree, a third opening degree, and a fourth opening degree based on the adjustment parameters. Finally, based on the air conditioning control requests, battery pack temperature control requests, and adjustment parameters, it determines the opening degree of the first electronic expansion valve from the first opening degree, the second opening degree, and the preset opening degree, and determines the opening degree of the second electronic expansion valve from the third opening degree, the fourth opening degree, and the preset opening degree. The opening degrees of the first and second electronic expansion valves can be determined based on the air conditioning control requests, battery pack temperature control requests, and adjustment parameters. Because the opening degrees of the first and second electronic expansion valves are determined through the air conditioning control requests and battery pack temperature control requests, the stability of the vehicle electronic expansion valve opening determination method is higher, thereby improving the stability of the heat pump air conditioning system.

[0103] Figure 4 This is a block diagram illustrating an automotive electronic expansion valve opening determination device, as shown in an exemplary embodiment of this application.

[0104] like Figure 4 As shown, the exemplary automotive electronic expansion valve opening determination device 400 includes:

[0105] The data acquisition module 410 is used to acquire air conditioning control requests, battery pack temperature control requests, and adjustment parameters.

[0106] The first opening degree determination module 420 is used to determine the first opening degree, the second opening degree, the third opening degree and the fourth opening degree according to the adjustment parameters.

[0107] The second opening degree determination module 430 is used to determine the opening degree of the first electronic expansion valve in the first opening degree and the second opening degree, and to determine the opening degree of the second electronic expansion valve in the third opening degree and the fourth opening degree, based on the air conditioning control request, the battery pack temperature control request and the adjustment parameters.

[0108] It should be noted that the vehicle electronic expansion valve opening determination device provided in the above embodiments and the vehicle electronic expansion valve opening determination method provided in the above embodiments belong to the same concept. The specific operation methods of each module and unit have been described in detail in the method embodiments, and will not be repeated here. In practical applications, the vehicle electronic expansion valve opening determination device provided in the above embodiments can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. This is not a limitation here.

[0109] Embodiments of this application also provide an electronic device, including: one or more processors; and a storage device for storing one or more programs, which, when executed by one or more processors, cause the electronic device to implement the method for determining the opening degree of an electronic expansion valve for vehicles provided in the above embodiments.

[0110] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. Each block in a flowchart or block diagram may represent a module, segment, or portion of code, which contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0111] The units described in the embodiments of this application can be implemented in software or hardware, and the described units can also be located in a processor. The names of these units do not necessarily limit the specific unit itself.

[0112] Another aspect of this application provides a computer-readable storage medium storing a computer program thereon, which, when executed by a computer's processor, causes the computer to perform the automotive electronic expansion valve opening determination method provided in the above embodiments. This computer-readable storage medium may be included in the electronic device described in the above embodiments, or it may exist independently and not assembled into the electronic device.

[0113] Another aspect of this application provides a computer program product or computer program including computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the automotive electronic expansion valve opening determination method provided in the various embodiments described above.

[0114] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this application should still be covered by the claims of this application.

Claims

1. A method of determining the opening degree of an electronic expansion valve for a vehicle, characterized by, The vehicle electronic expansion valve opening degree determination method comprises: obtaining an air conditioner control request, a battery pack temperature control request, and an adjustment parameter; determining a first opening degree, a second opening degree, a third opening degree, and a fourth opening degree according to the adjustment parameter, wherein the first opening degree, the second opening degree, the third opening degree, and the fourth opening degree are used to determine the opening degrees of a first electronic expansion valve and a second electronic expansion valve, the first opening degree is determined according to a first deviation of an evaporator temperature and an evaporator target temperature in the adjustment parameter, the second opening degree is determined according to a second deviation of an evaporator outlet superheat and an evaporator outlet target superheat in the adjustment parameter, the third opening degree is determined according to a third deviation of a battery inlet water temperature and a battery inlet target water temperature in the adjustment parameter, and the fourth opening degree is determined according to a fourth deviation of a battery cooler outlet superheat and a battery cooler outlet target superheat in the adjustment parameter; determining a first electronic expansion valve opening degree among the first opening degree, the second opening degree, and a preset opening degree, and determining a second electronic expansion valve opening degree among the third opening degree, the fourth opening degree, and the preset opening degree according to the air conditioner control request, the battery pack temperature control request, and the adjustment parameter, wherein the first electronic expansion valve is arranged at an evaporator inlet, the second electronic expansion valve is arranged at a battery cooler inlet, and the opening degree of the second electronic expansion valve is used to control the battery pack temperature.

2. The method of claim 1, wherein The method comprises: when the air conditioner request comprises a heating request and a cooling request, determining the first opening degree as the first electronic expansion valve opening degree and determining the fourth opening degree as the second electronic expansion valve opening degree.

3. The method of claim 1, wherein The method comprises: when the air conditioner request is a heating request, taking the preset opening degree as the first electronic expansion valve opening degree and determining the fourth opening degree as the second electronic expansion valve opening degree.

4. The method of claim 1, wherein The method comprises: when the air conditioner request is a cooling request, the battery pack temperature control request is a battery pack cooling request, and the battery water temperature in the adjustment parameter is greater than the target water temperature, determining the first opening degree as the first electronic expansion valve opening degree and determining the fourth opening degree as the second electronic expansion valve opening degree.

5. The method of claim 4, wherein The first electronic expansion valve opening degree is determined from the air conditioner control request, the battery pack temperature control request, and the adjustment parameter among the first opening degree, the second opening degree, and a preset opening degree, and the second electronic expansion valve opening degree is determined from the third opening degree, the fourth opening degree, and the preset opening degree. When the air conditioner request is a cooling request, the battery pack temperature control request is no control request, and the battery water temperature is greater than the target water temperature, the second opening degree is determined as the first electronic expansion valve opening degree, and the preset opening degree is determined as the second electronic expansion valve opening degree.

6. The method of claim 4, wherein The first electronic expansion valve opening degree is determined from the air conditioner control request, the battery pack temperature control request, and the adjustment parameter among the first opening degree, the second opening degree, and a preset opening degree, and the second electronic expansion valve opening degree is determined from the third opening degree, the fourth opening degree, and the preset opening degree. When the air conditioner request is a cooling request, the battery pack temperature control request is a battery pack cooling request, and the battery water temperature is less than or equal to the target water temperature, the second opening degree is determined as the first electronic expansion valve opening degree, and the third opening degree is determined as the second electronic expansion valve opening degree.

7. The method of claim 1, wherein The first electronic expansion valve opening degree is determined from the air conditioner control request, the battery pack temperature control request, and the adjustment parameter among the first opening degree, the second opening degree, and a preset opening degree, and the second electronic expansion valve opening degree is determined from the third opening degree, the fourth opening degree, and the preset opening degree. When the air conditioner request is no cooling or heating request, and the battery pack temperature control request is a battery pack cooling request, the preset opening degree is determined as the first electronic expansion valve opening degree, and the fourth opening degree is determined as the second electronic expansion valve opening degree.

8. A device for determining the opening degree of an electronic expansion valve for vehicles, characterized in that, The vehicle electronic expansion valve opening degree determination device comprises: a data acquisition module configured to acquire an air conditioner control request, a battery pack temperature control request, and an adjustment parameter; a first opening degree determination module configured to determine a first opening degree, a second opening degree, a third opening degree, and a fourth opening degree according to the adjustment parameter, the first opening degree, the second opening degree, the third opening degree, and the fourth opening degree being used to determine the opening degrees of a first electronic expansion valve and a second electronic expansion valve, wherein the first opening degree is determined according to a first deviation determined by an evaporator temperature and an evaporator target temperature in the adjustment parameter, the second opening degree is determined according to a second deviation determined by an evaporator outlet superheat and an evaporator outlet target superheat in the adjustment parameter, the third opening degree is determined according to a third deviation determined by a battery inlet water temperature and a battery inlet target water temperature in the adjustment parameter, and the fourth opening degree is determined according to a fourth deviation determined by a battery cooler outlet superheat and a battery cooler outlet target superheat in the adjustment parameter; and a first electronic expansion valve opening degree determination module configured to determine the first electronic expansion valve opening degree from the air conditioner control request, the battery pack temperature control request, and the adjustment parameter among the first opening degree, the second opening degree, and a preset opening degree, and a second electronic expansion valve opening degree determination module configured to determine the second electronic expansion valve opening degree from the third opening degree, the fourth opening degree, and the preset opening degree. A second opening degree determination module is configured to determine a first electronic expansion valve opening degree from the first opening degree and the second opening degree according to the air conditioner control request, the battery pack temperature control request, and the adjustment parameter, and determine a second electronic expansion valve opening degree from the third opening degree and the fourth opening degree, the first electronic expansion valve being arranged at an inlet of an evaporator, and the second electronic expansion valve being arranged at an inlet of a battery cooler, wherein the opening degree of the second electronic expansion valve is used to control the battery pack temperature.

9. An electronic device, comprising: The electronic device includes: one or more processors; a storage device for storing one or more programs, which, when executed by the one or more processors, cause the electronic device to implement the vehicle electronic expansion valve opening degree determination method according to any one of claims 1 to 7.

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