Vehicle thermal management control method and device, vehicle and non-volatile storage medium

Abstract

This invention provides a vehicle thermal management control method and device, a vehicle, and a non-volatile storage medium. The vehicle thermal management control method includes: receiving a first start signal to activate the cooling mode of the air conditioning system, thereby causing the air conditioning system to enter the cooling mode; and acquiring the ambient temperature T of the external environment in which the vehicle is located. out Determine the external ambient temperature T out The first preset temperature range in which it is located, and based on the external ambient temperature T out The minimum opening value of the first electronic expansion valve of the air conditioning system is set to the corresponding first preset minimum opening value within the first preset temperature range, so that the opening of the first electronic expansion valve is adjusted between the first preset minimum opening value and the maximum opening value of the first electronic expansion valve. The vehicle thermal management control method of the present invention solves the problem of poor passenger comfort caused by insufficient or excessive cooling capacity of the vehicle's air conditioning system in the prior art.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more specifically, to a vehicle thermal management control method and apparatus, a vehicle, and a non-volatile storage medium. Background Technology

[0002] Traditional buses use fuel, and the emissions no longer meet the requirements for energy conservation and emission reduction. Pure electric buses can effectively replace traditional buses. Pure electric buses are powered by batteries, which are used for charging and energy storage to power the entire vehicle.

[0003] Currently, most pure electric bus battery cooling systems adopt liquid cooling. Liquid cooling units are divided into integrated liquid cooling and independent liquid cooling units. Among them, the integrated liquid cooling management system uses the same structural components such as compressor, condenser, and evaporator for the in-vehicle air conditioning system and battery cooling system. The cooling capacity of the in-vehicle air conditioning system and the battery cooling system are controlled by the air conditioning electronic expansion valve and the battery electronic expansion valve, respectively.

[0004] Because the integrated liquid-cooled thermal management system shares the same refrigeration system with the vehicle's air conditioning system and battery cooling system, and the bus starts, stops, and opens its doors frequently during operation, the required cooling capacity for the two systems differs significantly. When both systems are capable of meeting the demand, it is even more necessary to control the electronic expansion valve to distribute the cooling capacity between the vehicle's air conditioning and battery cooling systems.

[0005] However, current integrated liquid-cooled thermal management systems cannot properly control the air conditioning electronic expansion valve and the battery electronic expansion valve, resulting in unreasonable distribution of cooling capacity. This leads to insufficient or excessive cooling capacity, which in turn results in poor passenger comfort and shorter battery life. Summary of the Invention

[0006] The main objective of this invention is to provide a vehicle thermal management control method and device, a vehicle, and a non-volatile storage medium to solve the problem of poor passenger comfort caused by insufficient or excessive cooling capacity of the vehicle's air conditioning system in the prior art.

[0007] To achieve the above objectives, according to a first aspect of the present invention, a vehicle thermal management control method is provided. The vehicle includes an air conditioning system. The vehicle thermal management control method includes: receiving a first activation signal to activate the cooling mode of the air conditioning system, thereby causing the air conditioning system to enter the cooling mode; and acquiring the ambient temperature T of the external environment in which the vehicle is located. out Determine the external ambient temperature T out The first preset temperature range in which it is located, and based on the external ambient temperature T outThe first preset temperature range sets the minimum opening value of the first electronic expansion valve of the air conditioning system to the corresponding first preset minimum opening value, so that the opening of the first electronic expansion valve can be adjusted between the first preset minimum opening value and the maximum opening value of the first electronic expansion valve. The air conditioning system has multiple first preset temperature ranges and multiple first preset minimum opening values. The multiple first preset temperature ranges and multiple first preset minimum opening values ​​are set one-to-one, and each first preset temperature range corresponds to a corresponding first preset minimum opening value. As the temperature value of the multiple first preset temperature ranges gradually increases, the multiple first preset minimum opening values ​​gradually increase.

[0008] Furthermore, the multiple first preset temperature ranges include a first temperature range, a second temperature range, a third temperature range, and a fourth temperature range; the multiple first preset minimum opening values ​​include a first opening value, a second opening value, a third opening value, and a fourth opening value; wherein: when the external ambient temperature T out When the temperature is within the first temperature range, the minimum opening value of the first electronic expansion valve is set as the first opening value. In the first temperature range (less than 25°C), the first opening value is greater than or equal to 130B and less than or equal to 150B. When the external ambient temperature T... out When the temperature is within the second temperature range, the minimum opening value of the first electronic expansion valve is set as the second opening value. The second temperature range is greater than or equal to 25℃ and less than 45℃, and the second opening value is greater than or equal to 160B and less than or equal to 180B. When the external ambient temperature T... out When the temperature is in the third temperature range, the minimum opening value of the first electronic expansion valve is set as the third opening value. The third temperature range is greater than or equal to 45℃ and less than 48℃, and the third opening value is greater than or equal to 190B and less than or equal to 200B. When the external ambient temperature T out When in the fourth temperature range, the minimum opening value of the first electronic expansion valve is set as the fourth opening value. The fourth temperature range is greater than or equal to 48°C, and the fourth opening value is greater than or equal to 430B and less than or equal to 450B.

[0009] Furthermore, when the external ambient temperature T out When the temperature is in the third temperature range, after setting the minimum opening value of the first electronic expansion valve to the third opening value, the vehicle's thermal management control method further includes: when the external ambient temperature T... out When the temperature is less than or equal to 44℃, the setting of the third opening value of the first electronic expansion valve is released, and the following steps are executed: Determine the external ambient temperature T. out The first preset temperature range in which it is located, and based on the external ambient temperature T outThe minimum opening value of the first electronic expansion valve of the air conditioning system is set to the corresponding first preset minimum opening value within the first preset temperature range, so that the opening value of the first electronic expansion valve is adjusted between the first preset minimum opening value and the maximum opening value of the first electronic expansion valve.

[0010] Furthermore, when the external ambient temperature T out When the temperature is in the fourth temperature range, after setting the minimum opening value of the first electronic expansion valve to the fourth opening value, the vehicle thermal management control method further includes: when the external ambient temperature T out When the temperature is less than or equal to 47°C, release the setting of the fourth opening value of the first electronic expansion valve and execute the following steps: determine the external ambient temperature T. out The first preset temperature range in which it is located, and based on the external ambient temperature T out The minimum opening value of the first electronic expansion valve of the air conditioning system is set to the corresponding first preset minimum opening value within the first preset temperature range, so that the opening value of the first electronic expansion valve is adjusted between the first preset minimum opening value and the maximum opening value of the first electronic expansion valve.

[0011] Furthermore, the first opening value is 150B; and / or, the second opening value is 180B; and / or, the third opening value is 200B; and / or, the fourth opening value is 450B.

[0012] Furthermore, the vehicle also includes a battery cooling system, which shares a compressor and condenser with the air conditioning system; the vehicle thermal management control method includes: receiving a second start signal to activate the battery cooling system to cool the vehicle's battery 1; determining whether the air conditioning system is in cooling mode; when the air conditioning system is not in cooling mode, adjusting the opening of the second electronic expansion valve of the battery cooling system between a second preset minimum opening value and the maximum opening of the second electronic expansion valve; when the air conditioning system is in cooling mode, setting the minimum opening value of the second electronic expansion valve to a third preset minimum opening value; acquiring the surface temperature T1 of the battery; and determining the surface temperature... The second preset temperature range where T1 is located is used to set the maximum value of the opening of the second electronic expansion valve as the corresponding preset maximum opening value, so that the opening of the second electronic expansion valve can be adjusted between the third preset minimum opening value and the preset maximum opening value. The battery cooling system has multiple second preset temperature ranges and multiple preset maximum opening values. The multiple second preset temperature ranges and multiple preset maximum opening values ​​are set one-to-one, and each second preset temperature range corresponds to the corresponding preset maximum opening value. As the temperature values ​​of the multiple second preset temperature ranges gradually increase, the multiple preset maximum opening values ​​gradually increase.

[0013] Furthermore, the second preset minimum opening value is greater than or equal to 80B and less than or equal to 100B.

[0014] Furthermore, the second preset minimum opening value is 100B.

[0015] Furthermore, the third preset minimum opening value is greater than or equal to 30B and less than or equal to 50B.

[0016] Furthermore, the third preset minimum opening value is 50B.

[0017] Furthermore, the multiple second preset temperature ranges include a fifth temperature range, a sixth temperature range, and a seventh temperature range; the multiple preset maximum opening values ​​include a fifth opening value, a sixth opening value, and a seventh opening value; wherein: when the surface temperature T1 is in the fifth temperature range, the maximum opening value of the second electronic expansion valve is set to the fifth opening value, the fifth temperature range is greater than or equal to 18℃ and less than 23℃, and the fifth opening value is greater than or equal to 100B and less than or equal to 120B; when the surface temperature T1 is in the sixth temperature range, the maximum opening value of the second electronic expansion valve is set to the sixth opening value, the sixth temperature range is greater than or equal to 23℃ and less than 32℃, and the sixth opening value is greater than or equal to 150B and less than or equal to 170B; when the surface temperature T1 is in the seventh temperature range, the maximum opening value of the second electronic expansion valve is set to the seventh opening value, the seventh temperature range is greater than or equal to 32℃, and the seventh opening value is greater than or equal to 200B and less than or equal to 220B.

[0018] Furthermore, the fifth opening value is 100B; and / or, the sixth opening value is 150B; and / or, the seventh opening value is 200B.

[0019] Furthermore, in determining the external ambient temperature T out The first preset temperature range in which it is located, and based on the external ambient temperature T out Before setting the minimum opening value of the first electronic expansion valve of the air conditioning system to the corresponding first preset minimum opening value in the first preset temperature range, the vehicle thermal management control method includes: controlling the compressor of the air conditioning system to start, and within a preset time after the compressor starts, adjusting the opening of the first electronic expansion valve between an eighth opening value and the maximum opening value of the first electronic expansion valve; wherein the eighth opening value is greater than or equal to 230B and less than or equal to 250B.

[0020] Furthermore, the eighth opening value is 250B; and / or, the preset duration is greater than or equal to 3 minutes and less than or equal to 7 minutes.

[0021] Furthermore, before receiving the first start signal and the second start signal, the vehicle thermal management control method includes: presetting multiple first preset temperature ranges, multiple first preset minimum opening values, multiple second preset temperature ranges, second preset minimum opening values, third preset minimum opening values, and multiple preset maximum opening values.

[0022] According to a second aspect of the present invention, a vehicle thermal management control device is provided for executing the above-described vehicle thermal management control method. The vehicle thermal management control device includes: a receiving unit for receiving a first start signal for activating the cooling mode of an air conditioning system, thereby causing the air conditioning system to enter the cooling mode; and an acquiring unit for acquiring the ambient temperature T of the external environment in which the vehicle is located. out ; Judgment unit, used to determine the external ambient temperature T out The first preset temperature range; the setting unit, used to set the temperature based on the external ambient temperature T. out The minimum opening value of the first electronic expansion valve of the air conditioning system is set to the corresponding first preset minimum opening value within the first preset temperature range, so that the opening value of the first electronic expansion valve is adjusted between the first preset minimum opening value and the maximum opening value of the first electronic expansion valve.

[0023] According to a third aspect of the present invention, a vehicle is provided, including the vehicle thermal management control device described above.

[0024] According to a fourth aspect of the present invention, a non-volatile storage medium is provided, the non-volatile storage medium including a stored program, wherein, when the program is running, the device where the non-volatile storage medium is located is controlled to perform the above-described vehicle thermal management control method.

[0025] According to the technical solution of this invention, the vehicle thermal management control method includes: after receiving a first start signal to activate the cooling mode of the air conditioning system, the control device controls the air conditioning system to enter the cooling mode; the control device acquires the ambient temperature T of the external environment where the vehicle is located. out Determine the external ambient temperature T out The first preset temperature range in which it is located, and based on the external ambient temperature T out The minimum opening value of the first electronic expansion valve of the air conditioning system is set to the corresponding first preset minimum opening value within the first preset temperature range. The opening value of the first electronic expansion valve is adjusted between the first preset minimum opening value and the maximum opening value of the first electronic expansion valve, thereby regulating the cooling capacity of the air conditioning system. This vehicle thermal management control method allows the minimum opening value of the first electronic expansion valve of the air conditioning system to be adjusted according to the external ambient temperature T. outFlexible adjustments are made so that when the external ambient temperature is high, the temperature value of the first preset temperature range is larger, and the first preset minimum opening value is also larger, meaning the minimum opening value of the first electronic expansion valve is larger, ensuring sufficient cooling capacity for the air conditioning system. Conversely, when the external ambient temperature is low, the temperature value of the first preset temperature range is smaller, and the first preset minimum opening value is smaller, meaning the minimum opening value of the first electronic expansion valve is smaller, ensuring that the cooling capacity of the air conditioning system is not excessive. This avoids the problem of insufficient or excessive cooling capacity of the air conditioning system when the external ambient temperature is low, or insufficient cooling capacity when the external ambient temperature is high, thus solving the problem of poor passenger comfort caused by insufficient or excessive cooling capacity of the vehicle's air conditioning system in existing technologies, and improving passenger comfort. In addition, by limiting the minimum opening value of the first electronic expansion valve, the opening value of the first electronic expansion valve can be adjusted between the minimum and maximum values, avoiding the long time required for the first electronic expansion valve to adjust to the required opening, thus improving cooling efficiency. Attached Figure Description

[0026] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0027] Figure 1 A schematic diagram of an embodiment of a vehicle according to the present invention is shown;

[0028] Figure 2 A partial flowchart of an embodiment of the vehicle thermal management control method according to the present invention is shown;

[0029] Figure 3 A schematic diagram of an embodiment of the vehicle thermal management control device according to the present invention is shown;

[0030] Figure 4 A flowchart of an embodiment of the vehicle thermal management control method according to the present invention is shown.

[0031] The above figures include the following reference numerals:

[0032] 1. Battery; 2. External fan; 6. Evaporator; 7. Plate heat exchanger; 10. First electronic expansion valve; 20. Compressor; 30. Condenser; 40. Second electronic expansion valve; 100. Receiving unit; 200. Acquisition unit; 300. Judgment unit; 400. Setting unit. Detailed Implementation

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0035] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0036] This invention provides a vehicle thermal management control method, please refer to... Figure 2 The vehicle includes an air conditioning system, and the vehicle thermal management control methods include:

[0037] S100: Receives the first start signal to activate the air conditioning system's cooling mode, so that the air conditioning system enters the cooling mode.

[0038] S200: Obtains the ambient temperature T of the external environment in which the vehicle is located. out ;

[0039] S300: Determines the external ambient temperature T out The first preset temperature range in which it is located, and based on the external ambient temperature T out The minimum opening value of the first electronic expansion valve 10 of the air conditioning system is set to the corresponding first preset minimum opening value within the first preset temperature range, so that the opening of the first electronic expansion valve 10 is adjusted between the first preset minimum opening value and the maximum opening value of the first electronic expansion valve 10.

[0040] The air conditioning system has multiple first preset temperature ranges and multiple first preset minimum opening values. The multiple first preset temperature ranges and multiple first preset minimum opening values ​​are set one-to-one. Each first preset temperature range corresponds to a corresponding first preset minimum opening value. As the temperature values ​​of the multiple first preset temperature ranges gradually increase, the multiple first preset minimum opening values ​​gradually increase.

[0041] The vehicle thermal management control method of the present invention includes: after receiving a first start signal to activate the cooling mode of the air conditioning system, the control device controls the air conditioning system to enter the cooling mode; the control device acquires the ambient temperature T of the external environment in which the vehicle is located. out Determine the external ambient temperature T out The first preset temperature range in which it is located, and based on the external ambient temperature T outThe minimum opening value of the first electronic expansion valve 10 of the air conditioning system is set to the corresponding first preset minimum opening value within the first preset temperature range. The opening value of the first electronic expansion valve 10 is adjusted between the first preset minimum opening value and the maximum opening value of the first electronic expansion valve 10, thereby regulating the cooling capacity of the air conditioning system. This vehicle thermal management control method allows the minimum opening value of the first electronic expansion valve 10 of the air conditioning system to be adjusted according to the external ambient temperature T. out Flexible adjustments are made so that when the external ambient temperature is high, the temperature value of the first preset temperature range is larger, and the first preset minimum opening value is also larger (i.e., the minimum opening value of the first electronic expansion valve 10 is larger), ensuring that the air conditioning system has sufficient cooling capacity. Conversely, when the external ambient temperature is low, the temperature value of the first preset temperature range is smaller, and the first preset minimum opening value is smaller (i.e., the minimum opening value of the first electronic expansion valve 10 is smaller), ensuring that the cooling capacity of the air conditioning system is not excessive. This avoids the problem of insufficient or excessive cooling capacity of the air conditioning system when the external ambient temperature is low, and insufficient cooling capacity when the external ambient temperature is high, thereby solving the problem of poor passenger comfort caused by insufficient or excessive cooling capacity of the vehicle's air conditioning system in the prior art, and improving passenger comfort. In addition, by limiting the minimum opening value of the first electronic expansion valve 10, the opening value of the first electronic expansion valve 10 can be adjusted between the minimum and maximum values, avoiding the long time required for the first electronic expansion valve 10 to adjust to the required opening, thus improving cooling efficiency.

[0042] In this embodiment, as Figure 4 As shown, multiple first preset temperature ranges include a first temperature range, a second temperature range, a third temperature range, and a fourth temperature range; multiple first preset minimum opening values ​​include a first opening value, a second opening value, a third opening value, and a fourth opening value; wherein: when the external ambient temperature T out When the temperature is within the first temperature range, the minimum opening value of the first electronic expansion valve 10 is set as the first opening value. In the first temperature range (less than 25°C), the first opening value is greater than or equal to 130B and less than or equal to 150B. When the external ambient temperature T... out When the temperature is in the second temperature range, the minimum opening value of the first electronic expansion valve 10 is set as the second opening value. The second temperature range is greater than or equal to 25°C and less than 45°C, and the second opening value is greater than or equal to 160B and less than or equal to 180B. When the external ambient temperature T out When the temperature is in the third temperature range, the minimum opening value of the first electronic expansion valve 10 is set as the third opening value. The third temperature range is greater than or equal to 45℃ and less than 48℃, and the third opening value is greater than or equal to 190B and less than or equal to 200B. When the external ambient temperature T outWhen in the fourth temperature range, the minimum opening value of the first electronic expansion valve 10 is set as the fourth opening value. The fourth temperature range is greater than or equal to 48°C, and the fourth opening value is greater than or equal to 430B and less than or equal to 450B.

[0043] Specifically, the opening degree of the electronic expansion valve represents the throttling degree of the refrigeration equipment, which affects the cooling and heating effect of the air conditioner. Since the adjustment structure of the electronic expansion valve is a stepper motor, the minimum angle range of the stepper motor rotation is called one step, or 1B.

[0044] In practical implementation, when the external ambient temperature T out When the temperature is in the first temperature range, i.e., below 25°C, the minimum opening value of the first electronic expansion valve 10 is greater than or equal to 130B and less than or equal to 150B; when the external ambient temperature T out When the temperature is within the second temperature range (greater than or equal to 25°C and less than 45°C), the minimum opening of the first electronic expansion valve 10 is greater than or equal to 160°B and less than or equal to 180°B; when the external ambient temperature T... out When the temperature is in the third temperature range (greater than or equal to 45℃ and less than 48℃), the minimum opening of the first electronic expansion valve 10 is greater than or equal to 190B and less than or equal to 200B; when the external ambient temperature T out When the temperature is in the fourth temperature range, i.e., greater than or equal to 48°C, the minimum opening value of the first electronic expansion valve 10 is greater than or equal to 430°B and less than or equal to 450°B. This setting allows the control device to adjust the opening based on the external ambient temperature T. out The minimum opening value of the first electronic expansion valve 10 is set to the corresponding first preset minimum opening value for different temperature ranges, so that the minimum opening value of the first electronic expansion valve 10 and the minimum cooling capacity of the air conditioning system can be flexibly adjusted according to the external ambient temperature, further avoiding insufficient or excessive cooling capacity of the vehicle's air conditioning system.

[0045] Specifically, such as Figure 4 As shown, when the external ambient temperature T out When the temperature is in the third temperature range, after setting the minimum opening value of the first electronic expansion valve 10 to the third opening value, the vehicle's thermal management control method further includes: when the external ambient temperature T out When the temperature is less than or equal to 44°C, the setting of the third opening value of the first electronic expansion valve 10 is released, and the following steps are executed: Determine the external ambient temperature T. out The first preset temperature range in which it is located, and based on the external ambient temperature T outThe minimum opening value of the first electronic expansion valve 10 of the air conditioning system is set to the corresponding first preset minimum opening value within the first preset temperature range, so that the opening of the first electronic expansion valve 10 is adjusted between the first preset minimum opening value and the maximum opening value of the first electronic expansion valve 10.

[0046] In practical implementation, when the external ambient temperature T out When the temperature is less than or equal to 44℃, i.e., the ambient temperature T out When the ambient temperature is less than the minimum value of the third temperature range (45℃), the external ambient temperature is no longer within the third temperature range. Therefore, the control device no longer sets the minimum opening value of the first electronic expansion valve 10 to the third opening value, and the control device re-evaluates the external ambient temperature T. out The first preset temperature range in which it is located, and based on the external ambient temperature T out The minimum opening value of the first electronic expansion valve 10 of the air conditioning system is set to the corresponding first preset minimum opening value within the first preset temperature range. This setting allows the minimum cooling capacity of the air conditioning system to be adjusted in a timely manner after the temperature of the external environment drops, further preventing the vehicle's air conditioning system from having excessive cooling capacity.

[0047] Specifically, such as Figure 4 As shown, when the external ambient temperature T out When the temperature is in the fourth temperature range, after setting the minimum opening value of the first electronic expansion valve 10 to the fourth opening value, the vehicle thermal management control method further includes: when the external ambient temperature T out When the temperature is less than or equal to 47°C, the fourth opening value setting of the first electronic expansion valve 10 is released, and the following steps are executed: Determine the external ambient temperature T. out The first preset temperature range in which it is located, and based on the external ambient temperature T out The minimum opening value of the first electronic expansion valve 10 of the air conditioning system is set to the corresponding first preset minimum opening value within the first preset temperature range, so that the opening of the first electronic expansion valve 10 is adjusted between the first preset minimum opening value and the maximum opening value of the first electronic expansion valve 10.

[0048] In practical implementation, when the external ambient temperature T out When the temperature is less than or equal to 47℃, i.e., the ambient temperature T out When the ambient temperature is less than the minimum value of the fourth temperature range (48℃), the external ambient temperature is no longer within the fourth temperature range. Therefore, the control device no longer sets the minimum opening value of the first electronic expansion valve 10 to the fourth opening value, and the control device re-evaluates the external ambient temperature T. out The first preset temperature range in which it is located, and based on the external ambient temperature T outThe minimum opening value of the first electronic expansion valve 10 of the air conditioning system is set to the corresponding first preset minimum opening value within the first preset temperature range. This setting allows the minimum cooling capacity of the air conditioning system to be adjusted in a timely manner after the temperature of the external environment drops, further preventing the vehicle's air conditioning system from having excessive cooling capacity.

[0049] Specifically, the first opening value is 150B; and / or, the second opening value is 180B; and / or, the third opening value is 200B; and / or, the fourth opening value is 450B.

[0050] In practical implementation, when the external ambient temperature T out When the temperature is in the first temperature range, i.e., below 25°C, the minimum opening of the first electronic expansion valve 10 is 150B; when the external ambient temperature T... out When the temperature is in the second temperature range, i.e., greater than or equal to 25°C and less than 45°C, the minimum opening value of the first electronic expansion valve 10 is 180°B; when the external ambient temperature T... out When the temperature is in the third temperature range (greater than or equal to 45℃ and less than 48℃), the minimum opening value of the first electronic expansion valve 10 is 200B; when the external ambient temperature T out When the temperature is in the fourth temperature range, which is greater than or equal to 48°C, the minimum opening of the first electronic expansion valve 10 is 450°B. This setting avoids the situation where the minimum opening of the first electronic expansion valve 10 is too small when the external ambient temperature is in the corresponding temperature range, resulting in insufficient cooling capacity of the air conditioning system and affecting passenger comfort. The above-mentioned setting of the opening of the first electronic expansion valve 10 has the best effect on cooling capacity distribution.

[0051] In this embodiment, the vehicle also includes a battery cooling system, which shares a compressor 20 and a condenser 30 with the air conditioning system. The vehicle thermal management control method includes: receiving a second start signal to activate the battery cooling system to cool the vehicle's battery; determining whether the air conditioning system is in cooling mode; when the air conditioning system is not in cooling mode, controlling the opening of the second electronic expansion valve 40 of the battery cooling system to be adjusted between a second preset minimum opening value and a second electronic expansion valve 40 maximum opening value; when the air conditioning system is in cooling mode, setting the minimum opening value of the second electronic expansion valve 40 to a third preset minimum opening value; acquiring the battery surface temperature T1; and determining the... The second preset temperature range in which the surface temperature T1 is located is determined, and the maximum value of the opening of the second electronic expansion valve 40 is set as the corresponding preset maximum opening value according to the second preset temperature range in which the surface temperature T1 is located, so that the opening of the second electronic expansion valve 40 is adjusted between the third preset minimum opening value and the preset maximum opening value; wherein, the battery cooling system has multiple second preset temperature ranges and multiple preset maximum opening values, and the multiple second preset temperature ranges are set in a one-to-one correspondence with the multiple preset maximum opening values, each second preset temperature range corresponds to the corresponding preset maximum opening value, and as the temperature values ​​of the multiple second preset temperature ranges gradually increase, the multiple preset maximum opening values ​​gradually increase.

[0052] Specifically, such as Figure 1 As shown, the vehicle uses an integrated liquid cooling unit. The integrated liquid cooling system integrates the air conditioning system and the battery cooling system into one unit for unified control. The air conditioning system includes: compressor 20, condenser 30, evaporator 6, outdoor fan 2, and first electronic expansion valve 10. The battery cooling system includes: compressor 20, condenser 30, outdoor fan 2, plate heat exchanger 7, and second electronic expansion valve 40. The air conditioning system and the battery cooling system share compressor 20, condenser 30, and outdoor fan 2, which reduces costs and reduces the footprint, making the structure more compact. The first electronic expansion valve 10 and the second electronic expansion valve 40 separate the passenger compartment and battery 1 of the vehicle. Controlling the opening of the two expansion valves can control the amount of cooling. When the air conditioning capacity demand and the battery capacity demand are not equal to zero, the refrigeration system needs to supply cooling to both. If there is no distribution control, there may be insufficient cooling in the passenger compartment or battery 1, or there may be excessive cooling, frequent compressor start-stop, and excessive power consumption.

[0053] In specific implementation, the vehicle thermal management control method includes: the control device receiving a second start signal to activate the battery cooling system to cool the vehicle's battery; determining whether the air conditioning system is in cooling mode; when the air conditioning system is not in cooling mode, i.e., the air conditioning system's capacity requirement is 0, adjusting the opening of the second electronic expansion valve 40 of the battery cooling system between a second preset minimum opening value and a second electronic expansion valve 40's maximum opening value; when the air conditioning system is in cooling mode, i.e., the air conditioning system's capacity requirement is not equal to 0, setting the minimum opening value of the second electronic expansion valve 40 to a third preset minimum opening value; acquiring the surface temperature T1 of the battery 1; determining the second preset temperature range in which the surface temperature T1 is located, and setting the maximum opening value of the second electronic expansion valve 40 to the corresponding preset maximum opening value according to the second preset temperature range in which the surface temperature T1 is located, so that the opening of the second electronic expansion valve 40 is adjusted between the third preset minimum opening value and the preset maximum opening value, thereby adjusting the cooling capacity of the battery cooling system. This vehicle thermal management control method allows the maximum opening value of the second electronic expansion valve 40 of the battery cooling system to be flexibly adjusted according to the battery surface temperature T1 when the air conditioning system is in cooling mode. This ensures that when the surface temperature T1 of battery 1 is high, the temperature value of the second preset temperature range is larger, the preset maximum opening value is larger, that is, the maximum opening value of the second electronic expansion valve 40 is larger, and the maximum cooling capacity of the battery cooling system is larger. Conversely, when the surface temperature T1 of battery 1 is low, the temperature value of the second preset temperature range is smaller, the preset maximum opening value is smaller, that is, the maximum opening value of the second electronic expansion valve 40 is smaller, and the maximum cooling capacity of the battery cooling system is smaller. This avoids the battery being damaged due to insufficient maximum cooling capacity of the battery cooling system when the battery surface temperature T1 is high, and the air conditioning system being insufficient due to excessive maximum cooling capacity of the battery cooling system when the battery surface temperature T1 is low. This improves battery efficiency and lifespan while ensuring passenger comfort.

[0054] Specifically, the second preset minimum opening value is greater than or equal to 80B and less than or equal to 100B.

[0055] In practice, when the air conditioning system is not in cooling mode, the upper limit of the minimum opening value of the second electronic expansion valve 40 controlling the battery cooling system is 100B and the lower limit is 80B, ensuring that the opening value of the second electronic expansion valve 40 is greater than or equal to 80B, so as to avoid insufficient cooling capacity of the battery cooling system.

[0056] Preferably, the second preset minimum opening value is 100B.

[0057] In practice, when the air conditioning system is not in cooling mode, and when the surface temperature T1 of the battery is high, the minimum opening value of the second electronic expansion valve 40 of the battery cooling system is greater than or equal to 100B, so as to fully guarantee the cooling capacity of the battery cooling system and avoid damage to the battery.

[0058] Specifically, the third preset minimum opening value is greater than or equal to 30B and less than or equal to 50B.

[0059] In practice, when the air conditioning system is in cooling mode, the minimum opening value of the second electronic expansion valve 40 is set at an upper limit of 50B and a lower limit of 30B to ensure that the minimum opening value of the second electronic expansion valve 40 is greater than or equal to 30B, thus avoiding insufficient cooling capacity of the battery cooling system and damage to the battery.

[0060] Preferably, the third preset minimum opening value is 50B.

[0061] In practice, when the air conditioning system is in cooling mode and the surface temperature T1 of the battery is high, the minimum opening value of the second electronic expansion valve 40 of the battery cooling system is greater than or equal to 50B, so as to fully guarantee the cooling capacity of the battery cooling system and avoid damage to the battery.

[0062] Specifically, the multiple second preset temperature ranges include a fifth temperature range, a sixth temperature range, and a seventh temperature range; the multiple preset maximum opening values ​​include a fifth opening value, a sixth opening value, and a seventh opening value; wherein: when the surface temperature T1 is in the fifth temperature range, the maximum opening value of the second electronic expansion valve 40 is set to the fifth opening value, the fifth temperature range is greater than or equal to 18℃ and less than 23℃, and the fifth opening value is greater than or equal to 100B and less than or equal to 120B; when the surface temperature T1 is in the sixth temperature range, the maximum opening value of the second electronic expansion valve 40 is set to the sixth opening value, the sixth temperature range is greater than or equal to 23℃ and less than 32℃, and the sixth opening value is greater than or equal to 150B and less than or equal to 170B; when the surface temperature T1 is in the seventh temperature range, the maximum opening value of the second electronic expansion valve 40 is set to the seventh opening value, the seventh temperature range is greater than or equal to 32℃, and the seventh opening value is greater than or equal to 200B and less than or equal to 220B.

[0063] In specific implementation, when the surface temperature T1 is in the fifth temperature range (greater than or equal to 18°C ​​and less than 23°C), the maximum opening value of the second electronic expansion valve 40 is greater than or equal to 100B and less than or equal to 120B; when the surface temperature T1 is in the sixth temperature range (greater than or equal to 23°C and less than 32°C), the maximum opening value of the second electronic expansion valve 40 is greater than or equal to 150B and less than or equal to 170B; when the surface temperature T1 is in the seventh temperature range (greater than or equal to 32°C), the maximum opening value of the second electronic expansion valve 40 is greater than or equal to 200B and less than or equal to 220B. This setting allows the control device to set the maximum opening value of the second electronic expansion valve 40 to the corresponding preset maximum opening value according to the different temperature ranges of the battery surface temperature T1. This allows the maximum opening value of the second electronic expansion valve 40 and the maximum cooling capacity of the battery cooling system to be flexibly adjusted according to the battery surface temperature, further avoiding insufficient or excessive cooling capacity of the battery cooling system.

[0064] Preferably, the fifth opening value is 100B; and / or, the sixth opening value is 150B; and / or, the seventh opening value is 200B.

[0065] In specific implementation, when the air conditioning system is in cooling mode, i.e., the air conditioning capacity demand is not zero and the battery capacity demand is 50%, i.e., the battery surface temperature T1 is greater than or equal to 18°C ​​and less than 23°C, the maximum opening value of the second electronic expansion valve 40 is 100B; when the battery capacity demand is 100%, i.e., the surface temperature T1 is greater than or equal to 23°C and less than 32°C, the maximum opening value of the second electronic expansion valve 40 is 150B; when the battery capacity demand is 120%, i.e., the battery surface temperature T1 is greater than or equal to 32°C, the maximum opening value of the second electronic expansion valve 40 is 200B. This setting avoids the maximum value of the second electronic expansion valve 40 opening being too large when the battery surface temperature is within the corresponding temperature range, resulting in insufficient cooling capacity of the air conditioning system and affecting passenger comfort.

[0066] Specifically, in determining the external ambient temperature T out The first preset temperature range in which it is located, and based on the external ambient temperature T out Before the minimum opening value of the first electronic expansion valve 10 of the air conditioning system is set to the corresponding first preset minimum opening value in the first preset temperature range, the vehicle thermal management control method includes: controlling the compressor 20 of the air conditioning system to start, and within a preset time after the compressor 20 starts, adjusting the opening of the first electronic expansion valve 10 between an eighth opening value and the maximum opening of the first electronic expansion valve 10; wherein the eighth opening value is greater than or equal to 230B and less than or equal to 250B.

[0067] In specific implementation, after receiving the first start signal to activate the air conditioning system's cooling mode, the control device controls the air conditioning system to enter cooling mode and then controls the compressor 20 of the air conditioning system to start. Within a preset time after the compressor 20 starts, the minimum opening value of the first electronic expansion valve 10 is the eighth opening value, which is greater than or equal to 230B and less than or equal to 250B. The opening value of the first electronic expansion valve 10 is adjusted between the eighth opening value and the maximum opening value of the first electronic expansion valve 10. After the preset time after the compressor 20 starts, the external ambient temperature T is then determined. out The first preset temperature range in which it is located, and based on the external ambient temperature T out The minimum opening value of the first electronic expansion valve 10 of the air conditioning system is set to the corresponding first preset minimum opening value within the first preset temperature range. This vehicle thermal management control method can ensure that when the supply of cooling capacity is low within the preset start-up time of the compressor 20, the minimum opening value of the first electronic expansion valve 10 will not be too small, resulting in insufficient cooling capacity or slow cooling efficiency of the air conditioning system, thus ensuring the comfort of passengers in the initial stage of compressor 20 start-up.

[0068] Preferably, the eighth opening value is 250B.

[0069] Specifically, the preset duration is greater than or equal to 3 minutes and less than or equal to 7 minutes.

[0070] In specific implementation, the preset time after compressor 20 starts is at least 3 minutes, and the minimum opening value of the first electronic expansion valve 10 is 250B, to avoid the opening of the first electronic expansion valve 10 being too small before the compressor 20 supplies sufficient cooling capacity; the preset time after compressor 20 starts is at most 7 minutes, and the minimum opening value of the first electronic expansion valve 10 is 250B, to avoid the first electronic expansion valve 10 failing to set the minimum opening value of the first electronic expansion valve 10 to the corresponding first preset minimum opening value in a timely manner according to the external ambient temperature after the compressor 20 supplies sufficient cooling capacity, resulting in insufficient or excessive cooling capacity of the air conditioning system.

[0071] Preferably, the preset duration is 5 minutes.

[0072] Specifically, before receiving the first and second start signals, the vehicle thermal management control method includes: pre-setting multiple first preset temperature ranges, multiple first preset minimum opening values, multiple second preset temperature ranges, second preset minimum opening values, third preset minimum opening values, and multiple preset maximum opening values. This setting ensures that when the control device acquires the surface temperature T1, it can promptly determine its location within the second preset temperature range, and when the control device acquires the external ambient temperature T... outThen it can determine the first preset temperature range in which it is located, and quickly determine the upper and lower limits of the opening value of the first electronic expansion valve 10 and the second electronic expansion valve 40, so as to accurately distribute the cooling capacity and solve the problem of insufficient or excessive cooling capacity. This will not affect the comfort of passengers, but also protect the battery life to a certain extent, while avoiding frequent start and stop of the compressor 20 and excessive power consumption.

[0073] This invention also provides a vehicle thermal management control device, please refer to... Figure 3 The vehicle thermal management control device, used to execute the vehicle thermal management control method in the above embodiments, includes: a receiving unit 100, used to receive a first start signal for activating the cooling mode of the air conditioning system, so as to cause the air conditioning system to enter the cooling mode; and an acquiring unit 200, used to acquire the ambient temperature T of the external environment where the vehicle is located. out Judgment unit 300 is used to determine the external ambient temperature T. out The first preset temperature range; setting unit 400, used to set the temperature according to the external ambient temperature T out The minimum opening value of the first electronic expansion valve 10 of the air conditioning system is set to the corresponding first preset minimum opening value within the first preset temperature range, so that the opening of the first electronic expansion valve 10 is adjusted between the first preset minimum opening value and the maximum opening value of the first electronic expansion valve 10.

[0074] The vehicle thermal management control device includes: a receiving unit 100, used to receive a first start signal for activating the air conditioning system's cooling mode, so as to cause the air conditioning system to enter the cooling mode; and an acquiring unit 200, used to acquire the ambient temperature T of the external environment in which the vehicle is located. out The judgment unit 300 is connected to the acquisition unit 200 and is used to judge the external ambient temperature T. out The first preset temperature range; the setting unit 400 is connected to the judging unit 300, and is used to determine the external ambient temperature T. out The first preset temperature range sets the minimum opening value of the first electronic expansion valve 10 of the air conditioning system to a corresponding first preset minimum opening value, so that the opening value of the first electronic expansion valve 10 can be adjusted between the first preset minimum opening value and the maximum opening value of the first electronic expansion valve 10. This vehicle thermal management control device allows the minimum opening value of the first electronic expansion valve 10 of the air conditioning system to be adjusted according to the external ambient temperature T. out By making flexible adjustments, the minimum cooling capacity of the air conditioning system is avoided when the external ambient temperature is low and when the minimum cooling capacity of the air conditioning system is low, thus solving the problem of poor passenger comfort caused by insufficient or excessive cooling capacity of the vehicle's air conditioning system in the existing technology, and improving passenger comfort.

[0075] The present invention also provides a vehicle including the vehicle thermal management control device described in the above embodiments.

[0076] The vehicle of the present invention includes the vehicle thermal management control device of the above embodiments. The vehicle thermal management control device includes: a receiving unit 100, configured to receive a first start signal for activating the cooling mode of the air conditioning system, so as to cause the air conditioning system to enter the cooling mode; and an acquiring unit, configured to acquire the ambient temperature T of the external environment in which the vehicle is located. out The judgment unit 300 is connected to the acquisition unit 200 and is used to judge the external ambient temperature T. out The first preset temperature range; the setting unit 400 is connected to the judging unit 300, and is used to determine the external ambient temperature T. out The first preset temperature range sets the minimum opening value of the first electronic expansion valve 10 of the air conditioning system to a corresponding first preset minimum opening value, so that the opening value of the first electronic expansion valve 10 can be adjusted between the first preset minimum opening value and the maximum opening value of the first electronic expansion valve 10. This vehicle thermal management control device allows the minimum opening value of the first electronic expansion valve 10 of the air conditioning system to be adjusted according to the external ambient temperature T. out By making flexible adjustments, the minimum cooling capacity of the air conditioning system is avoided when the external ambient temperature is low and when the minimum cooling capacity of the air conditioning system is low, thus solving the problem of poor passenger comfort caused by insufficient or excessive cooling capacity of the vehicle's air conditioning system in the existing technology, and improving passenger comfort.

[0077] The present invention also provides a non-volatile storage medium, which includes a stored program, wherein, when the program is running, it controls the device where the non-volatile storage medium is located to execute the vehicle thermal management control method in the above embodiments.

[0078] Specifically, the aforementioned storage medium is used to store program instructions that perform the following functions, thereby achieving the following functions:

[0079] Receive the first start signal to activate the air conditioning system's cooling mode, thus enabling the air conditioning system to enter cooling mode; obtain the ambient temperature T of the external environment where the vehicle is located. out Determine the external ambient temperature T out The first preset temperature range in which it is located, and based on the external ambient temperature T out The minimum opening value of the first electronic expansion valve 10 of the air conditioning system is set to the corresponding first preset minimum opening value within the first preset temperature range, so that the opening of the first electronic expansion valve 10 is adjusted between the first preset minimum opening value and the maximum opening value of the first electronic expansion valve 10.

[0080] The air conditioning system has multiple first preset temperature ranges and multiple first preset minimum opening values. The multiple first preset temperature ranges and multiple first preset minimum opening values ​​are set one-to-one. Each first preset temperature range corresponds to a corresponding first preset minimum opening value. As the temperature values ​​of the multiple first preset temperature ranges gradually increase, the multiple first preset minimum opening values ​​gradually increase.

[0081] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0082] The vehicle thermal management control method of the present invention includes: after receiving a first start signal to activate the cooling mode of the air conditioning system, the control device controls the air conditioning system to enter the cooling mode; the control device acquires the ambient temperature T of the external environment in which the vehicle is located. out Determine the external ambient temperature T out The first preset temperature range in which it is located, and based on the external ambient temperature T out The minimum opening value of the first electronic expansion valve 10 of the air conditioning system is set to the corresponding first preset minimum opening value within the first preset temperature range. The opening value of the first electronic expansion valve 10 is adjusted between the first preset minimum opening value and the maximum opening value of the first electronic expansion valve 10, thereby regulating the cooling capacity of the air conditioning system. This vehicle thermal management control method allows the minimum opening value of the first electronic expansion valve 10 of the air conditioning system to be adjusted according to the external ambient temperature T. out Flexible adjustments are made so that when the external ambient temperature is high, the temperature value of the first preset temperature range is larger, and the first preset minimum opening value is also larger (i.e., the minimum opening value of the first electronic expansion valve 10 is larger), ensuring that the air conditioning system has sufficient cooling capacity. Conversely, when the external ambient temperature is low, the temperature value of the first preset temperature range is smaller, and the first preset minimum opening value is smaller (i.e., the minimum opening value of the first electronic expansion valve 10 is smaller), ensuring that the cooling capacity of the air conditioning system is not excessive. This avoids the problem of insufficient or excessive cooling capacity of the air conditioning system when the external ambient temperature is low, and insufficient cooling capacity when the external ambient temperature is high, thereby solving the problem of poor passenger comfort caused by insufficient or excessive cooling capacity of the vehicle's air conditioning system in the prior art, and improving passenger comfort. In addition, by limiting the minimum opening value of the first electronic expansion valve 10, the opening value of the first electronic expansion valve 10 can be adjusted between the minimum and maximum values, avoiding the long time required for the first electronic expansion valve 10 to adjust to the required opening, thus improving cooling efficiency.

[0083] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0084] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0085] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A vehicle thermal management control method, wherein the vehicle includes an air conditioning system, characterized in that, The vehicle thermal management control method includes: Receive a first start signal to activate the cooling mode of the air conditioning system, so that the air conditioning system enters the cooling mode. Obtain the ambient temperature T of the external environment in which the vehicle is located. out ; Determine the external ambient temperature T out The first preset temperature range in which it is located, and based on the external ambient temperature T out The first preset temperature range in which the minimum opening value of the first electronic expansion valve (10) of the air conditioning system is located is set to the corresponding first preset minimum opening value, so that the opening value of the first electronic expansion valve (10) is adjusted between the first preset minimum opening value and the maximum opening value of the first electronic expansion valve (10). The air conditioning system has multiple first preset temperature ranges and multiple first preset minimum opening values. The multiple first preset temperature ranges and multiple first preset minimum opening values ​​are set in a one-to-one correspondence. Each first preset temperature range corresponds to a corresponding first preset minimum opening value. As the temperature values ​​of the multiple first preset temperature ranges gradually increase, the multiple first preset minimum opening values ​​gradually increase. The vehicle also includes a battery cooling system, which shares a compressor (20) and a condenser (30) with the air conditioning system; the vehicle thermal management control method includes: A second start signal is received to activate the battery cooling system to cool the battery (1) of the vehicle; Determine whether the air conditioning system is in the cooling mode; When the air conditioning system is not in the cooling mode, the opening of the second electronic expansion valve (40) of the battery cooling system is adjusted between a second preset minimum opening value and the maximum opening of the second electronic expansion valve (40); When the air conditioning system is in the cooling mode, the minimum opening value of the second electronic expansion valve (40) is set to the third preset minimum opening value, which is less than the second preset minimum opening value; the surface temperature T1 of the battery (1) is obtained; the second preset temperature range in which the surface temperature T1 is located is determined, and the maximum opening value of the second electronic expansion valve (40) is set to the corresponding preset maximum opening value according to the second preset temperature range in which the surface temperature T1 is located, so that the opening of the second electronic expansion valve (40) is adjusted between the third preset minimum opening value and the preset maximum opening value; The battery cooling system has multiple second preset temperature ranges and multiple preset maximum opening values. The multiple second preset temperature ranges and the multiple preset maximum opening values ​​are set in a one-to-one correspondence. Each second preset temperature range corresponds to a corresponding preset maximum opening value. As the temperature values ​​of the multiple second preset temperature ranges gradually increase, the multiple preset maximum opening values ​​gradually increase.

2. The vehicle thermal management control method according to claim 1, characterized in that, The plurality of first preset temperature ranges include a first temperature range, a second temperature range, a third temperature range, and a fourth temperature range; the plurality of first preset minimum opening values ​​include a first opening value, a second opening value, a third opening value, and a fourth opening value; wherein: When the external ambient temperature T out When the temperature range is within the first temperature range, the minimum opening value of the first electronic expansion valve (10) is set as the first opening value. The first temperature range is less than 25°C, and the first opening value is greater than or equal to 130B and less than or equal to 150B. When the external ambient temperature T out When in the second temperature range, the minimum value of the opening of the first electronic expansion valve (10) is set as the second opening value. The second temperature range is greater than or equal to 25°C and less than 45°C. The second opening value is greater than or equal to 160B and less than or equal to 180B. When the external ambient temperature T out When the temperature is in the third temperature range, the minimum opening value of the first electronic expansion valve (10) is set as the third opening value. The third temperature range is greater than or equal to 45°C and less than 48°C. The third opening value is greater than or equal to 190B and less than or equal to 200B. When the external ambient temperature T out When the temperature is in the fourth temperature range, the minimum opening value of the first electronic expansion valve (10) is set as the fourth opening value. The fourth temperature range is greater than or equal to 48°C, and the fourth opening value is greater than or equal to 430B and less than or equal to 450B.

3. The vehicle thermal management control method according to claim 2, characterized in that, When the external ambient temperature T out When the vehicle is in the third temperature range, after setting the minimum opening value of the first electronic expansion valve (10) to the third opening value, the vehicle thermal management control method further includes: When the external ambient temperature T out When the temperature is less than or equal to 44°C, the setting of the third opening value of the first electronic expansion valve (10) is released, and the following steps are performed: determining the external ambient temperature T. out The first preset temperature range in which it is located, and based on the external ambient temperature T out The first preset temperature range in which the minimum opening value of the first electronic expansion valve (10) of the air conditioning system is located is set to the corresponding first preset minimum opening value, so that the opening value of the first electronic expansion valve (10) is adjusted between the first preset minimum opening value and the maximum opening value of the first electronic expansion valve (10).

4. The vehicle thermal management control method according to claim 2, characterized in that, When the external ambient temperature T out When the vehicle is in the fourth temperature range, after setting the minimum opening value of the first electronic expansion valve (10) to the fourth opening value, the vehicle thermal management control method further includes: When the external ambient temperature T out When the temperature is less than or equal to 47°C, the setting of the fourth opening value of the first electronic expansion valve (10) is released, and the following steps are performed: determining the external ambient temperature T. out The first preset temperature range in which it is located, and based on the external ambient temperature T out The first preset temperature range in which the minimum opening value of the first electronic expansion valve (10) of the air conditioning system is located is set to the corresponding first preset minimum opening value, so that the opening value of the first electronic expansion valve (10) is adjusted between the first preset minimum opening value and the maximum opening value of the first electronic expansion valve (10).

5. The vehicle thermal management control method according to claim 2, characterized in that, The first opening value is 150B; and / or, The second opening value is 180B; and / or, The third opening value is 200B; and / or, The fourth opening value is 450B.

6. The vehicle thermal management control method according to claim 1, characterized in that, The second preset minimum opening value is greater than or equal to 80B and less than or equal to 100B.

7. The vehicle thermal management control method according to claim 6, characterized in that, The second preset minimum opening value is 100B.

8. The vehicle thermal management control method according to claim 1, characterized in that, The third preset minimum opening value is greater than or equal to 30B and less than or equal to 50B.

9. The vehicle thermal management control method according to claim 8, characterized in that, The third preset minimum opening value is 50B.

10. The vehicle thermal management control method according to claim 1, characterized in that, The plurality of second preset temperature ranges include a fifth temperature range, a sixth temperature range, and a seventh temperature range; the plurality of preset maximum opening values ​​include a fifth opening value, a sixth opening value, and a seventh opening value; wherein: When the surface temperature T1 is in the fifth temperature range, the maximum value of the opening of the second electronic expansion valve (40) is set as the fifth opening value. The fifth temperature range is greater than or equal to 18°C ​​and less than 23°C. The fifth opening value is greater than or equal to 100B and less than or equal to 120B. When the surface temperature T1 is in the sixth temperature range, the maximum value of the opening of the second electronic expansion valve (40) is set as the sixth opening value. The sixth temperature range is greater than or equal to 23°C and less than 32°C. The sixth opening value is greater than or equal to 150B and less than or equal to 170B. When the surface temperature T1 is in the seventh temperature range, the maximum value of the opening of the second electronic expansion valve (40) is set as the seventh opening value. The seventh temperature range is greater than or equal to 32°C, and the seventh opening value is greater than or equal to 200B and less than or equal to 220B.

11. The vehicle thermal management control method according to claim 10, characterized in that, The fifth opening value is 100B; and / or, The sixth opening value is 150B; and / or, The seventh opening value is 200B.

12. The vehicle thermal management control method according to claim 1, characterized in that, In determining the external ambient temperature T out The first preset temperature range in which it is located, and based on the external ambient temperature T out Before setting the minimum opening value of the first electronic expansion valve (10) of the air conditioning system to the corresponding first preset minimum opening value within the first preset temperature range, the vehicle thermal management control method includes: The compressor (20) of the air conditioning system is controlled to start, and within a preset time after the compressor (20) starts, the opening degree of the first electronic expansion valve (10) is adjusted between an eighth opening degree value and the maximum opening degree of the first electronic expansion valve (10); wherein the eighth opening degree value is greater than or equal to 230B and less than or equal to 250B.

13. The vehicle thermal management control method according to claim 12, characterized in that, The eighth opening value is 250B; and / or, the preset duration is greater than or equal to 3 minutes and less than or equal to 7 minutes.

14. The vehicle thermal management control method according to claim 1, characterized in that, Before receiving the first start signal and the second start signal, the vehicle thermal management control method includes: Multiple first preset temperature ranges, multiple first preset minimum opening values, multiple second preset temperature ranges, multiple second preset minimum opening values, the third preset minimum opening value, and multiple preset maximum opening values ​​are preset.

15. A non-volatile storage medium, characterized in that, The non-volatile storage medium includes a stored program, wherein, when the program is executed, the device containing the non-volatile storage medium is controlled to perform the vehicle thermal management control method according to any one of claims 1 to 14.

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