Vehicle integrated thermal management control method and system and vehicle

By unifying the control of the power battery, air conditioning and electric drive system through the vehicle integrated thermal management system, the problems of signal synchronization and hardware redundancy under independent ECU control are solved, and the power battery is able to operate within the optimal temperature range, thereby improving system efficiency and safety.

CN121200698APending Publication Date: 2025-12-26HUNAN XINGBIDA NETLINK TECH CO LTD
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Patent Information

Application Number
CN202511718058.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-20
Publication Date
2025-12-26

AI Technical Summary

Technical Problem

In existing new energy vehicles, the power battery, air conditioning management and power management system are controlled by independent ECUs, which leads to untimely command feedback, difficulty in signal synchronization, high development costs and hardware redundancy. The power battery thermal management function is also limited, affecting battery performance and safety.

Method used

The vehicle adopts an integrated thermal management system, which controls the power battery, cab air conditioning, electric drive and high-voltage accessory thermal management system in a unified manner through the vehicle controller. It performs integrated thermal management according to temperature requirements, including cooling, heating and temperature difference self-circulation modes.

Benefits of technology

This enables the power battery to operate within its optimal temperature range, improves signal synchronization and system efficiency, reduces development costs, and ensures battery performance and safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention provides a whole vehicle integrated heat management control method and system and a vehicle, and is applied to the technical field of vehicle control, the method is suitable for the whole vehicle integrated heat management system, and the system comprises a power battery heat management system, a cab air conditioning system, an electric drive heat management system and a high-voltage accessory heat management system. Comprising the steps of obtaining the temperature of the power battery, determining the thermal management requirement of the power battery according to the temperature of the power battery, and performing thermal management control on the power battery thermal management system according to the thermal management requirement of the power battery. The thermal management of the vehicle is centralized to the vehicle control unit, the thermal management requirements of the power battery are determined according to different temperatures of the power battery, thermal management control is carried out on the thermal management system of the power battery, signals can be synchronized, and it can be guaranteed that the power battery is in the optimal temperature interval.
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Description

Technical Field

[0001] This application relates to the field of vehicle control technology, specifically to a vehicle integrated thermal management control method, system, and vehicle. Background Technology

[0002] In the electronic architecture of new energy vehicles, the three major functions of power battery management, air conditioning management and power management generally adopt their own independent ECUs, forming a distributed control pattern. Although designing independent ECUs can shorten the development cycle, all coordination commands between the three systems need to be forwarded through the CAN bus at multiple levels. This can easily lead to untimely command feedback, resulting in temperature overshoot or power downgrade lag. Furthermore, using a separate ECU also makes signal synchronization difficult, resulting in high development costs and hardware redundancy.

[0003] Furthermore, as a core component of new energy vehicles, the performance, lifespan, and safety of power batteries are significantly affected by temperature. Current thermal management systems for power batteries mostly only involve cooling or heating functions. Operating power batteries at excessively high or low temperatures can lead to decreased charging and discharging efficiency, accelerated capacity decay, and even safety issues such as thermal runaway. Therefore, effective thermal management of power batteries is a crucial technology for ensuring their operation within their optimal temperature range. Summary of the Invention

[0004] In view of this, this application provides a vehicle-integrated thermal management control method, system, and vehicle, which solves the problems of current vehicle thermal management systems using separate controllers, untimely instruction feedback, difficulty in signal synchronization, high development costs and hardware redundancy, as well as the limited functionality of current power battery thermal management systems.

[0005] As a first aspect of this application, this application provides a vehicle integrated thermal management control method, the method being applicable to a vehicle integrated thermal management system, the vehicle integrated thermal management system including a power battery thermal management system, a cab air conditioning system, an electric drive thermal management system, and a high-voltage accessory thermal management system; The control method includes: Obtain the temperature of the power battery; Based on the temperature of the power battery, the thermal management requirements of the power battery are determined, including cooling mode, heating mode, cooling self-circulation mode and temperature difference self-circulation mode. Thermal management control is performed on the power battery thermal management system according to the thermal management requirements of the power battery.

[0006] Optionally, the triggering method for the cab air conditioning system includes a one-button automatic air conditioning button; The control method further includes: When an electrical signal of an automatic air conditioning key is acquired, a first thermal management requirement of the cab is determined according to a current cab temperature and a preset temperature; According to the first thermal management requirement of the cab, the cab air conditioning system is controlled.

[0007] Optionally, the first thermal management requirement of the cab is determined according to the current cab temperature and the preset temperature, comprising: When a difference between the current cab temperature and the preset temperature is greater than or equal to a first temperature difference threshold, the first thermal management requirement of the cab is determined as a cooling mode; When the difference between the current cab temperature and the preset temperature is less than a second temperature difference threshold, the first thermal management requirement of the cab is determined as a heating mode, wherein the first temperature difference threshold is greater than the second temperature difference threshold; When the difference between the current cab temperature and the preset temperature is greater than or equal to the second temperature difference threshold and less than the first temperature difference threshold, the first thermal management requirement of the cab is determined as a fan mode.

[0008] Optionally, according to the first thermal management requirement of the cab, the cab air conditioning system is controlled, comprising: When the first thermal management requirement of the cab is the cooling mode, a blowing mode of the cab is controlled as a face blowing mode; When the first thermal management requirement of the cab is the heating mode, the blowing mode of the cab is controlled as a foot blowing mode; When the first thermal management requirement of the cab is the fan mode, the blowing mode of the cab is controlled as a face and foot blowing mode.

[0009] Optionally, the triggering mode of the cab air conditioning system comprises a central control screen air conditioning operation interface. The control method further comprises: When an electrical signal of at least one air conditioning function key in the central control screen air conditioning operation interface is acquired, a second thermal management requirement of the cab is determined according to a function corresponding to the at least one air conditioning function key; According to the second thermal management requirement of the cab, the cab air conditioning system is controlled.

[0010] Optionally, the thermal management requirement of the power battery is determined according to the temperature of the power battery, comprising: When the temperature of the power battery is greater than or equal to a first temperature threshold, the thermal management requirement of the power battery is determined as entering a cooling self-circulation mode; When the temperature of the power battery is greater than or equal to a second temperature threshold, the thermal management requirement of the power battery is determined as entering a cooling mode, and the temperature of the power battery entering the cooling mode is monitored. when the temperature of the power battery entering the cooling self-circulation mode is less than or equal to a fourth temperature threshold, determining that the thermal management requirement of the power battery is to exit the cooling self-circulation mode; when the temperature of the power battery entering the cooling self-circulation mode is less than or equal to a fourth temperature threshold, determining that the thermal management requirement of the power battery is to exit the cooling self-circulation mode; wherein the third temperature threshold is greater than the first temperature threshold and less than the second temperature threshold, and the fourth temperature threshold is less than the first temperature threshold.

[0011] Optionally, determining the thermal management requirement of the power battery according to the temperature of the power battery further comprises: when the temperature of the power battery entering the cooling self-circulation mode is less than or equal to a fourth temperature threshold, determining that the thermal management requirement of the power battery is to exit the cooling self-circulation mode; when the temperature of the power battery entering the cooling self-circulation mode is less than or equal to a fourth temperature threshold, determining that the thermal management requirement of the power battery is to exit the cooling self-circulation mode; wherein the sixth temperature threshold is greater than the fifth temperature threshold and less than the fourth temperature threshold.

[0012] Optionally, determining the thermal management requirement of the power battery according to the temperature of the power battery further comprises: when the temperature difference between the highest temperature of the cell monomer in the power battery and the lowest temperature of the cell monomer is greater than or equal to a third temperature difference threshold, determining that the thermal management requirement of the power battery is to enter a temperature difference self-circulation mode.

[0013] As a second aspect of the present application, the present application provides a vehicle integrated thermal management system, comprising: a power battery thermal management system, the power battery thermal management system comprising a compressor, a condenser, a first electronic expansion valve, a heat exchanger, a first PTC heater, a first water pump; a cab air conditioning system, the cab air conditioning system comprising a compressor, a condenser, a second electronic expansion valve, an evaporator, a heater core, a second water pump, a second PTC heater; an electric drive thermal management system, the electric drive thermal management system comprising a radiator, a third water pump; a high-voltage accessory thermal management system, the high-voltage accessory thermal management system comprising a radiator, a fourth water pump; a vehicle controller, the vehicle controller comprising a processor and a memory, the memory storing a computer program, and the processor executing the computer program to execute the vehicle integrated thermal management control method of the first aspect.

[0014] As a third aspect of the present application, the present application provides a vehicle comprising: A central control screen air conditioner operation interface; A one-key automatic air conditioner button; The whole vehicle integrated thermal management system of the second aspect; Based on the above, the whole vehicle integrated thermal management control method provided by the present application is suitable for the whole vehicle integrated thermal management system, the whole vehicle integrated thermal management system comprises a power battery thermal management system, a cab air conditioning system, an electric drive thermal management system and a high-pressure accessory thermal management system, the present application adopts the whole vehicle integrated thermal management system, and all the thermal management systems of the vehicle are controlled by the whole vehicle controller, signals can be synchronized, and different thermal management requirements of the power battery are determined according to different temperatures of the power battery, so that the power battery thermal management system is controlled for thermal management, and the power battery can be guaranteed to be in an optimal temperature range. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0016] Figure 1 The structure diagram of the whole vehicle integrated thermal management system provided by the embodiment of the present application is shown.

[0017] Figure 2 The flowchart of the whole vehicle integrated thermal management control method provided by the embodiment of the present application is shown.

[0018] Figure 3 The flowchart of another whole vehicle integrated thermal management control method provided by the embodiment of the present application is shown.

[0019] Figure 4 The flowchart of another whole vehicle integrated thermal management control method provided by the embodiment of the present application is shown.

[0020] Figure 5 The flowchart of another whole vehicle integrated thermal management control method provided by the embodiment of the present application is shown.

[0021] Figure 6 The flowchart of another whole vehicle integrated thermal management control method provided by the embodiment of the present application is shown.

[0022] Figure 7 The flowchart of the method for determining the thermal management requirement of the power battery provided by the embodiment of the present application is shown.

[0023] Figure 8 Fig. 1 shows a structural block diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0024] Unless otherwise defined, technical terms or scientific terms used in the embodiments of the present application shall have the ordinary meanings to be understood by one of ordinary skill in the art to which the embodiments of the present application belong. The terms “first”, “second”, and the like used in the embodiments of the present application do not denote any order, quantity, or importance, but are used to avoid confusion among the components.

[0025] Unless otherwise required by context, “plurality” in the specification means “at least two”, and “comprising” is to be interpreted as open, inclusive language that means “including but not limited to”. In the description of the specification, the terms “one embodiment”, “some embodiments”, “an exemplary embodiment”, “an example”, “a specific example” or “some examples” are intended to indicate that the described implementation or example is included in at least one embodiment or example of the present specification. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example.

[0026] The technical solutions in the embodiments of the present specification will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present specification. Obviously, the described embodiments are only some of the embodiments of the present specification, not all. Based on the embodiments in the present specification, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present specification.

[0027] Exemplary system As a first aspect of the present application, the present application provides a whole vehicle integrated thermal management system, which comprises a power battery thermal management system, a cab air conditioning system, an electric drive thermal management system, a high-voltage accessory thermal management system, and a whole vehicle controller. The power battery thermal management system, the cab air conditioning system, the electric drive thermal management system, and the high-voltage accessory thermal management system are respectively in communication connection with the whole vehicle controller.

[0028] In the present application, for example, Figure 1As shown, the power battery thermal management system includes a first cooling circuit, a first water circuit and a second water circuit, wherein the first cooling circuit includes a compressor 1, a condenser 2, a heat dissipation fan 3, a second pressure sensor 4, a first electronic expansion valve 13, a heat exchanger 14, a third temperature sensor 15 and a first pressure sensor 9, the first water circuit includes the heat exchanger 14, a power battery three-way pipe 21, a first temperature sensor 22, a power battery 16, a second temperature sensor 17, a first water pump 18 and a power battery three-way valve 19, and the second water circuit includes a first PTC heater 20, the power battery three-way pipe 21, the first temperature sensor 22, the power battery 16, the second temperature sensor 17, the first water pump 18 and the power battery three-way valve 19.

[0029] The cab air conditioning system includes a second cooling circuit and a third water circuit, wherein the second cooling circuit includes the compressor 1, the condenser 2, the heat dissipation fan 3, the second pressure sensor 4, the second electronic expansion valve 5, the evaporator 6, the air conditioning fan 7, the fourth temperature sensor 8 and the first pressure sensor 9, and the third water circuit includes the heater core 12, the second water pump 10 and the second PTC heater 11.

[0030] The electric drive thermal management system includes a fourth water circuit, wherein the fourth water circuit includes the radiator 27, the third water pump 25 and the electric drive component 26, and the high-voltage accessory thermal management system includes a fifth water circuit, wherein the fifth water circuit includes the radiator 27, the fourth water pump 23 and the high-voltage accessory 24.

[0031] Exemplary method As Figure 2 As shown in the exemplary embodiments of the present application, a whole vehicle integrated thermal management control method is provided, which is applicable to a whole vehicle integrated thermal management system, and can include the following steps: S10: Obtain the temperature of the power battery.

[0032] A thermocouple or a digital temperature chip or an NTC (Negative Temperature Coefficient) can be arranged on the surface of each battery module or single cell to obtain the temperature of the power battery, a micro sensor can also be embedded in the battery to obtain the temperature of the power battery, in addition, the average temperature of the cells can also be taken as the temperature of the power battery. There are many ways to obtain the temperature of the power battery 16, which can be selected according to the actual specific situation, and the present application does not make too many specific limitations.

[0033] S20: Determine the thermal management requirement of the power battery according to the temperature of the power battery.

[0034] Different power battery temperature thresholds can be preset, and the power battery temperature thresholds are corresponded to the thermal management requirements of the power battery, and then the thermal management requirements of the power battery are determined according to the temperature of the power battery.

[0035] S30: The thermal management control is performed on the power battery thermal management system according to the thermal management requirements of the power battery.

[0036] After the thermal management requirements of the power battery are determined according to the temperature of the power battery, the thermal management control can be performed on each driving component in the power battery thermal management system, such as the compressor 1, the condenser 2, the first electronic expansion valve 13, the heat exchanger 14, the first PTC heater 20, the first water pump 18, etc. Specifically, the thermal management control on each driving component in the power battery thermal management system can be starting or stopping, and the opening of the first electronic expansion valve 13 can be adjusted.

[0037] In some embodiments of the present application, the temperature of the power battery is obtained, the thermal management requirements of the power battery are determined according to the temperature of the power battery, and the thermal management control is performed on the power battery thermal management system according to the thermal management requirements of the power battery, which can ensure that the power battery is in the optimal temperature range.

[0038] In some embodiments of the present application, the triggering mode of the cab air conditioning system includes a one-key automatic air conditioning button. Figure 3 As shown in the above vehicle integrated thermal management control method, the following steps can also be included: S40: When the electrical signal of the one-key automatic air conditioning button is obtained, the first thermal management requirement of the cab is determined according to the current cab temperature and the preset temperature.

[0039] In the present application, the air conditioning operation panel and the air conditioning controller are cancelled, and the demand input of the air conditioner is realized by the one-key automatic air conditioning button. The one-key automatic air conditioning button has a working indicator light. When the one-key automatic air conditioning button is pressed, the working indicator light is used to indicate the activation state of the one-key automatic air conditioning function. The one-key automatic air conditioning button can be installed on the instrument desk or other convenient operating positions.

[0040] The vehicle controller can set the preset temperature according to the ambient temperature. The higher the ambient temperature, the lower the set temperature. The lower the ambient temperature, the higher the set temperature, and the upper and lower limits (such as 18℃ to 32℃) are set. The vehicle controller obtains the current cab temperature, and when the electrical signal of the one-key automatic air conditioning button is obtained, the first thermal management requirement of the cab can be determined according to the size relationship between the current cab temperature and the preset temperature. The first thermal management requirement of the cab corresponding to the one-key automatic air conditioning button includes the cooling mode, the heating mode and the fan mode.

[0041] S50: performing thermal management control on the cab air conditioning system according to the first thermal management requirement of the cab.

[0042] In some embodiments of the present application, as shown in Figure 4 the first thermal management requirement of the cab is determined according to the current cab temperature and the preset temperature in S40, the specific steps can include: S41: when the difference between the current cab temperature and the preset temperature is greater than or equal to the first temperature difference threshold, determining that the first thermal management requirement of the cab is the cooling mode.

[0043] The first temperature difference threshold is preset, for example, the first temperature difference threshold is 2℃, the current temperature in the cab is obtained, and the difference between the current cab temperature and the preset temperature is calculated, when the difference between the current cab temperature and the preset temperature is greater than or equal to the first temperature difference threshold, i.e. the current cab temperature - the preset temperature ≥ 2℃, it is determined that the first thermal management requirement of the cab is the cooling mode.

[0044] S42: when the difference between the current cab temperature and the preset temperature is less than the second temperature difference threshold, determining that the first thermal management requirement of the cab is the heating mode.

[0045] The second temperature difference threshold is preset, for example, the second temperature difference threshold is -2℃, when the difference between the current cab temperature and the preset temperature is less than the second temperature difference threshold, i.e. the current cab temperature - the preset temperature < -2℃, it is determined that the first thermal management requirement of the cab is the heating mode, wherein the first temperature difference threshold is greater than the second temperature difference threshold.

[0046] S43: when the difference between the current cab temperature and the preset temperature is greater than or equal to the second temperature difference threshold and less than the first temperature difference threshold, determining that the first thermal management requirement of the cab is the fan mode.

[0047] When the difference between the current cab temperature and the preset temperature is greater than or equal to the second temperature difference threshold and less than the first temperature difference threshold, i.e. -2℃ ≤ cab temperature - preset temperature < 2℃, it is determined that the first thermal management requirement of the cab is the fan mode.

[0048] In some embodiments of the present application, as shown in Figure 5 the first thermal management requirement of the cab is determined according to the current cab temperature and the preset temperature in S40, the specific steps can include: S51: when the first thermal management requirement of the cab is the cooling mode, controlling the blowing mode of the cab to be the face blowing.

[0049] When the first thermal management requirement of the cab is determined to be the cooling mode, the second cooling circuit is turned on, the compressor 1, the condenser 2, the second electronic expansion valve 5, the evaporator 6, and the air conditioner fan 7 are started, the compressor 1 sucks in low-temperature and low-pressure gaseous refrigerant (coolant), changes it into high-temperature and high-pressure gaseous refrigerant through compression, and then sends it into the condenser along the pipeline, the compressor 1 drives the refrigerant to circulate in the system and provides power for the refrigeration cycle, the condenser 2 dissipates the high-temperature and high-pressure refrigerant vapor discharged by the compressor to the atmosphere through the heat dissipation fins, so that it condenses into high-pressure refrigerant liquid, the refrigerant liquid continues to pass through the second electronic expansion valve 5 to the evaporator 6 along the pipeline, the evaporator 6 changes the low-temperature and low-pressure liquid refrigerant into low-temperature and low-pressure gaseous refrigerant through the throttling mechanism, and evaporates by absorbing the heat in the cab. The evaporator 6 provides a refrigeration effect in the cab by converting the refrigerant into a gaseous state, and the gaseous refrigerant continues to return to the compressor 1 along the pipeline, and the air conditioner fan 7 blows cold air into the cab, which is repeated to reduce the temperature of the cab.

[0050] When the thermal management requirement of the cab is the cooling mode, the vehicle controller can also control the blowing mode of the cab to be face blowing by adjusting the position corresponding to the required blowing mode of the damper, so that the temperature of the face of the driver is preferentially reduced.

[0051] S52: When the first thermal management requirement of the cab is the heating mode, the blowing mode of the cab is controlled to be foot blowing.

[0052] When the first thermal management requirement of the cab is determined to be the heating mode, the third water circuit is turned on, the heater core 12, the air conditioner fan 7, the second water pump 10, and the second PTC heater 11 are started, the temperature of the cooling water is adjusted by adjusting the power of the second PTC heater 11 through the controller, so that the water temperature increases, the second water pump 10 promotes the circulation of the heated cooling water, and the heated cooling water flows in the direction of the second water pump 10, the second PTC heater 11, the heater core 12, and the second water pump 10, the air conditioner fan 7 blows hot air into the cab, which is repeated to increase the temperature of the cab.

[0053] The vehicle controller can also control the blowing mode of the cab to be foot blowing by adjusting the position corresponding to the required blowing mode of the damper, so that the temperature of the driver's feet is preferentially increased.

[0054] S53: When the first thermal management requirement of the cab is the fan mode, the blowing mode of the cab is controlled to be face and foot blowing at the same time.

[0055] When the first thermal management requirement of the cab is the fan mode, only the air conditioner fan 7 is started, the position corresponding to the required blowing mode of the damper is adjusted by the vehicle controller, the blowing mode of the cab is controlled to be blowing the face and the feet at the same time, and air circulation in the cab can be promoted.

[0056] In some embodiments, the air volume gear of the air conditioner fan 7 can be set according to the difference between the cab temperature and the set temperature. The larger the difference between the cab temperature and the set temperature, the larger the air volume gear of the air conditioner fan. For example, when the temperature difference is greater than 8°C, it is 8 gears, when the temperature difference is between 8°C and 7°C, it is 7 gears, and so on.

[0057] In some embodiments of the present application, the triggering mode of the cab air conditioning system can also include a central control screen air conditioning operation interface, as shown in Figure 6 The vehicle integrated thermal management control method can further include the following steps: S60: When the electrical signal of at least one air conditioning function key in the central control screen air conditioning operation interface is acquired, the second thermal management requirement of the cab is determined according to the function corresponding to the at least one air conditioning function key.

[0058] The central control screen air conditioning operation interface can also be used to realize the demand input and state display of the air conditioner. The central control screen air conditioning operation interface is provided with a plurality of air conditioning function keys, such as air conditioning start / stop, refrigeration start / stop, heating start / stop, inside / outside circulation switching, blowing mode switching, defrosting mode, temperature setting, air volume adjustment, automatic / manual mode switching, etc. to realize the air conditioning function of the central control screen.

[0059] The vehicle controller can determine the second thermal management requirement of the cab according to the electrical signal of the air conditioning function key of the central control screen air conditioning operation interface. When the vehicle controller acquires the electrical signal of at least one air conditioning function key of the central control screen, the vehicle controller sends an air conditioning state display instruction signal of the corresponding key to the central control screen and controls the corresponding central control screen function key to be highlighted. For example, after the driver effectively clicks the air conditioning start / stop, refrigeration start / stop, heating start / stop, inside / outside circulation switching, blowing mode switching, defrosting mode, temperature setting, air volume adjustment, automatic / manual mode switching, etc. The vehicle controller can determine the second thermal management requirement of the cab as air conditioning start / stop, refrigeration start / stop, heating start / stop, inside / outside circulation switching, blowing mode switching, defrosting mode, temperature setting, air volume adjustment, automatic / manual mode switching.

[0060] S70: According to the second thermal management requirement of the cab, the thermal management control of the cab air conditioning system is performed.

[0061] According to the second thermal management requirement of the cab, the air conditioner start / stop, refrigeration start / stop, heating start / stop, inside / outside circulation switching, blowing mode switching, defrosting mode, temperature setting, air volume adjustment, automatic / manual mode switching, etc., the vehicle controller controls the thermal management of the cab air conditioning system, such as starting / closing the compressor 1, the heating PTC 11, the second water pump 10, the air conditioner fan 7, the inside / outside circulation motor, the mode motor, the defrosting motor, starting / closing and adjusting the second electronic expansion valve 5, etc.

[0062] In some embodiments of the present application, the one-key automatic air conditioning function can be effectively switched with the air conditioning function of the central control screen. When the one-key automatic air conditioning button is activated, the one-key automatic air conditioning function is entered, and the central control screen air conditioning function is exited. When the central control screen air conditioning function is activated, the air conditioning function of the central control screen is entered, and the one-key automatic air conditioning function is exited. The one-key automatic air conditioning function has the redundancy function of inputting the air conditioning demand when the central control screen fails, and improves the reliability of the air conditioning system.

[0063] In some embodiments of the present application, the corresponding mode of the central control screen of the present application can also be determined by voice, to determine the thermal management requirement of the cab. For example, a voice password is set in advance, and the controller can determine the thermal management requirement of the cab when the driver speaks the accurate voice password.

[0064] In some embodiments of the present application, the thermal management requirement of the power battery can include a refrigeration mode, a heating mode, a cooling self-circulation mode and a temperature difference self-circulation mode, as shown in Figure 7 As shown in FIG. 20, S20 determines the thermal management requirement of the power battery according to the temperature of the power battery. The specific steps can include: S21: When the temperature of the power battery is greater than or equal to the first temperature threshold, the thermal management requirement of the power battery is determined to be in the cooling self-circulation mode.

[0065] The first temperature threshold is set in advance, for example, the first temperature threshold can be 26℃. After obtaining the temperature of the power battery, the first temperature threshold can be compared. When the temperature of the power battery 16 is greater than or equal to the first temperature threshold, the temperature of the power battery is not too high at this time, and high-power components such as the compressor 1 do not need to be started to refrigerate. Only cooling self-circulation can meet the cooling demand of the power battery 16, so the thermal management requirement of the power battery can be set to the cooling self-circulation mode.

[0066] S22: When the temperature of the power battery is greater than or equal to the second temperature threshold, the thermal management requirement of the power battery is determined to be in the refrigeration mode, and the temperature of the power battery in the refrigeration mode is monitored.

[0067] A second temperature threshold is preset, for example, the second temperature threshold can be 32°C, after determining that the thermal management requirement of the power battery is to enter the cooling self-circulation mode, the vehicle controller performs the thermal management control corresponding to the cooling self-circulation mode on the power battery thermal management system, and continues to monitor the temperature of the power battery entering the cooling self-circulation mode and compares it with the second temperature threshold, when the temperature of the power battery 16 is greater than or equal to the second temperature threshold, at this time, the temperature of the power battery 16 is high, if only the cooling self-circulation is insufficient to meet the cooling requirement of the power battery, at this time, the refrigeration device such as the compressor 1 and the condenser 2 is needed to cool the power battery, therefore, the thermal management requirement of the power battery can be set to the refrigeration mode, the vehicle controller performs the thermal management control corresponding to the refrigeration mode on the power battery thermal management system, and continues to monitor the temperature of the power battery entering the refrigeration mode.

[0068] S23: When the temperature of the power battery entering the refrigeration mode is less than or equal to the third temperature threshold, it is determined that the thermal management requirement of the power battery is to exit the refrigeration mode and enter the cooling self-circulation mode, and the temperature of the power battery entering the cooling self-circulation mode is monitored.

[0069] A third temperature threshold is preset, wherein the third temperature threshold is greater than the first temperature threshold and less than the second temperature threshold, for example, the third temperature threshold can be 30°C, when the temperature of the power battery is greater than or equal to the second temperature threshold, the refrigeration device such as the compressor and the condenser is used to cool the power battery, so that the temperature of the power battery gradually decreases, when the temperature of the power battery is less than or equal to the third temperature threshold, at this time, only the cooling self-circulation can maintain the temperature of the power battery in the optimal temperature range, therefore, it is determined that the thermal management requirement of the power battery is to exit the refrigeration mode and enter the cooling self-circulation mode, the vehicle controller performs the thermal management control corresponding to the cooling self-circulation mode on the power battery thermal management system, and continues to monitor the temperature of the power battery entering the cooling self-circulation mode.

[0070] S24: When the temperature of the power battery entering the cooling self-circulation mode is less than or equal to the fourth temperature threshold, it is determined that the thermal management requirement of the power battery is to exit the cooling self-circulation mode.

[0071] A fourth temperature threshold is preset, for example, the fourth temperature threshold can be 24°C, when the temperature of the power battery continues to decrease until it is less than or equal to the fourth temperature threshold, at this time, the temperature of the power battery has reached the optimal temperature range, and cooling is no longer needed, therefore, it is determined that the thermal management requirement of the power battery is to exit the cooling self-circulation mode.

[0072] The third temperature threshold is greater than the first temperature threshold and less than the second temperature threshold, and the fourth temperature threshold is less than the first temperature threshold.

[0073] In some embodiments of the present application, the step of determining the thermal management requirement of the power battery according to the temperature of the power battery in S20 can further include the steps of: S25: When the temperature of the power battery is less than or equal to the fifth temperature threshold, determining that the thermal management requirement of the power battery is to enter the heating mode, and monitoring the temperature of the power battery in the heating mode.

[0074] The fifth temperature threshold is preset, for example, the fifth temperature threshold can be 16℃. After obtaining the temperature of the power battery, the temperature of the power battery can be compared with the fifth temperature threshold. When the temperature of the power battery is less than or equal to the fifth temperature threshold, the temperature of the power battery is low at this time, and heating operation is needed. Therefore, it is determined that the thermal management requirement of the power battery is to enter the heating mode, the vehicle controller performs the thermal management control corresponding to the heating mode on the power battery thermal management system, and the temperature of the power battery in the heating mode is continuously monitored.

[0075] The sixth temperature threshold is greater than the fifth temperature threshold and less than the fourth temperature threshold.

[0076] S26: When the temperature of the power battery is greater than or equal to the sixth temperature threshold, determining that the thermal management requirement of the power battery is to exit the heating mode.

[0077] The sixth temperature threshold is preset, for example, the sixth temperature threshold can be 20℃. When the temperature of the power battery is less than or equal to the fifth temperature threshold, the power battery can be heated by the heating device. The temperature of the power battery increases. When the temperature of the power battery is greater than or equal to the sixth temperature threshold, the temperature of the power battery has reached the optimal temperature range at this time. Specifically, the optimal temperature range can be set to be between the fifth temperature threshold and the first temperature threshold. At this time, no heating operation is needed, and it is determined that the thermal management requirement of the power battery is to exit the heating mode.

[0078] In some embodiments of the present application, the step of determining the thermal management requirement of the power battery according to the temperature of the power battery in S20 can further include the steps of: S27: When the temperature difference between the highest temperature of the power battery and the lowest temperature of the power battery is greater than or equal to the third temperature difference threshold, determining that the thermal management requirement of the power battery is to enter the temperature difference self-circulation mode.

[0079] An NTC / digital temperature sensor can be arranged on the surface of each (or each string) battery cell to obtain the temperature of each battery cell in the power battery. The highest temperature of the battery cell in the power battery 16 and the lowest temperature of the battery cell are compared, and the temperature difference between the highest temperature of the battery cell in the power battery 16 and the lowest temperature of the battery cell is calculated. When the temperature difference is greater than or equal to a third temperature difference threshold, which can be set to 6℃, it indicates that the internal temperature of the power battery 16 is not balanced at this time, and only the temperature difference self-circulation can meet the demand for balancing the temperature of the power battery 16. Therefore, it is determined that the thermal management demand of the power battery is to enter the temperature difference self-circulation mode.

[0080] The embodiment pre-sets different levels of temperature thresholds and temperature difference thresholds, compares the temperature of the power battery and the temperature of the battery cell with the temperature thresholds and the temperature difference thresholds, and quickly determines different thermal management demands of the power battery.

[0081] In some embodiments of the present application, the power battery thermal management system is controlled according to the thermal management demand of the power battery in S30, and the specific steps can include: S31: When the thermal management demand of the power battery is the cooling self-circulation mode and the temperature difference self-circulation mode, the first water pump is started.

[0082] When it is determined that the thermal management demand of the power battery is to enter the cooling self-circulation mode, the temperature of the power battery is not too high at this time, and there is no need to start the compressor 1 and other high-power components. Only the first water pump 18 is started to make the cooling liquid circulate in the power battery waterway, which can utilize environmental heat dissipation and reduce the cooling cost of the power battery 16.

[0083] When it is determined that the thermal management demand of the power battery is to enter the temperature difference self-circulation mode, the internal temperature of the power battery is not balanced at this time. Only the first water pump 18 is started to make the cooling liquid flow through each battery cell or module in turn. In a short time, the heat of the battery cell with high temperature is taken away, and the battery cell with low temperature absorbs part of the heat, so that the temperature gradient of the entire battery pack is uniform.

[0084] In some embodiments, in the cooling self-circulation mode or the temperature difference self-circulation mode, the first water circuit is turned on, the first water pump 18 is started, and the power battery three-way valve 19 is switched to the cooling port. The first water pump 18 promotes the circulation of the cooling water, so that the cooling water flows in the direction of the first water pump 18, the cooling port of the power battery three-way valve 19, the cooling port of the power battery three-way pipe 21, the power battery 16, and the first water pump 18.

[0085] S32: When the thermal management demand of the power battery is the refrigeration mode, the compressor, the condenser, the first electronic expansion valve, the heat exchanger, and the first water pump are started.

[0086] When it is determined that the thermal management requirement of the power battery is the cooling mode, at this time the temperature of the power battery is high, and if only the cooling self-circulation is performed, it is insufficient to meet the cooling requirement of the power battery, at this time the power battery needs to be cooled by means of a compressor, a condenser and other cooling devices, specifically, the first cooling circuit and the first water circuit are turned on, and the compressor 1, the condenser 2, the first electronic expansion valve 13, the heat exchanger 14 and the first water pump 18 are started. The compressor 1 sucks in low-temperature and low-pressure gaseous refrigerant (coolant), and through compression, the gaseous refrigerant becomes high-temperature and high-pressure gaseous refrigerant, and then is sent to the condenser 2 along the pipeline. The condenser 3 dissipates the high-temperature and high-pressure refrigerant vapor discharged by the compressor 1 to the atmosphere through the heat dissipation fins, so that the high-temperature and high-pressure refrigerant vapor is condensed into high-pressure refrigerant liquid. The refrigerant liquid continues to pass through the first electronic expansion valve 13 to the heat exchanger 14 along the pipeline. At the heat exchanger 14, the refrigerant exchanges heat with the cooling water in the heat exchanger 14, and at the same time, the first water pump 18 is started to circulate the water, so that the water temperature in the first water circuit is balanced, and with the decrease of the water temperature, the temperature of the power battery 16 is reduced.

[0087] S33: When the thermal management requirement of the power battery is the heating mode, the first PTC heater and the first water pump are started.

[0088] When it is determined that the thermal management requirement of the power battery is the heating mode, at this time the temperature of the power battery is low, and the first PTC heater 20 needs to be started to heat the power battery. Specifically, the second water circuit is turned on, the first PTC heater 20 is started, the first water pump 18 is started, and the power battery three-way valve 19 is switched to the heating port. The temperature of the cooling water is adjusted by adjusting the power of the first PTC heater 20 through the vehicle controller, so that the water temperature increases. The first water pump 18 promotes the circulation of the heated cooling water, so that the heated cooling water flows in the direction of the first water pump 18, the heating port of the power battery three-way valve 19, the first PTC heater 20, the heating port of the power battery three-way valve 21, the power battery 16 and the first water pump 18.

[0089] In some embodiments of the present application, the above-mentioned integrated vehicle thermal management control method can further include the following steps: S80: Obtain the temperature of the electric drive.

[0090] The electric drive includes multiple components such as a drive motor and a motor controller. The vehicle controller obtains signals transmitted by the electric drive control unit to obtain the temperature of the electric drive.

[0091] S90: Determine the thermal management requirement of the electric drive according to the temperature of the electric drive.

[0092] In some embodiments of the present application, the step of determining the thermal management requirement of the electric drive according to the temperature of the electric drive in S90 can include the following steps: S91: determining that the thermal management requirement of the high-pressure accessory is the refrigeration heat dissipation mode when the temperature of the electric drive is greater than or equal to the high-pressure accessory temperature threshold.

[0093] The electric drive temperature threshold is preset, which can be set according to actual conditions. The vehicle controller compares the temperature of the electric drive with the electric drive temperature threshold after obtaining the temperature of the electric drive. When the temperature of the electric drive is greater than or equal to the electric drive temperature threshold, it is determined that the thermal management requirement of the electric drive is the refrigeration heat dissipation mode.

[0094] S100: performing thermal management control on the electric drive thermal management system according to the thermal management requirement of the electric drive.

[0095] In some embodiments of the present application, the specific steps of performing thermal management control on the electric drive thermal management system according to the thermal management requirement of the electric drive in S100 can include: S101: turning on the radiator 27 and the third water pump 25 when the thermal management requirement of the electric drive is the refrigeration heat dissipation mode.

[0096] When it is determined that the thermal management requirement of the electric drive is the refrigeration heat dissipation mode, the fourth water circuit is turned on, the radiator 27 and the third water pump 25 are turned on, the temperature of the cooling water is reduced through the radiator, and the third water pump promotes the circulation of the cooling water, so that the cooling water after cooling flows in the direction of the third water pump 25, the electric drive 26, the radiator 27 and the third water pump 25.

[0097] S110: obtaining the temperature of the high-pressure accessory.

[0098] The high-pressure accessory can include components such as an electric air pump, an electric steering oil pump, a DCDC inverter, and a high-voltage charging device. The temperature of the high-pressure accessory can be obtained by arranging NTC on the surface of the high-pressure accessory and sent to the vehicle controller through CAN.

[0099] S120: determining the thermal management requirement of the high-pressure accessory according to the temperature of the high-pressure accessory.

[0100] In some embodiments of the present application, the specific steps of determining the thermal management requirement of the high-pressure accessory according to the temperature of the high-pressure accessory in S120 can include: S121: determining that the thermal management requirement of the high-pressure accessory is the refrigeration heat dissipation mode when the temperature of the high-pressure accessory is greater than or equal to the high-pressure accessory temperature threshold.

[0101] The high-pressure accessory temperature threshold is preset, which can be set according to actual conditions. The vehicle controller compares the temperature of the high-pressure accessory with the high-pressure accessory temperature threshold after obtaining the temperature of the high-pressure accessory. When the temperature of the high-pressure accessory is greater than or equal to the high-pressure accessory temperature threshold, it is determined that the thermal management requirement of the high-pressure accessory is the refrigeration heat dissipation mode.

[0102] S130: performing thermal management control on the high-voltage accessory thermal management system according to the thermal management requirement of the high-voltage accessory.

[0103] In some embodiments of the present application, the specific steps of performing thermal management control on the high-voltage accessory thermal management system according to the thermal management requirement of the high-voltage accessory in S130 can include: S131: when the thermal management requirement of the high-voltage accessory is the refrigeration heat dissipation mode, turning on the radiator and the fourth water pump.

[0104] When it is determined that the thermal management requirement of the high-voltage accessory is the refrigeration heat dissipation mode, the fifth water circuit is turned on, the radiator 27 and the fourth water pump 23 are turned on, the temperature of the cooling water is reduced through the radiator 27, and the fourth water pump 23 promotes circulation of the cooling water, so that the cooling water after cooling circulates in the direction of the fourth water pump 23, the high-voltage accessory 24, the radiator 27, and the fourth water pump 23.

[0105] In some embodiments, when the thermal management requirements of the power battery and the cab are both refrigeration modes, the opening degree ratio of the first electronic expansion valve and the second electronic expansion valve is determined according to the refrigeration amounts of the power battery and the cab.

[0106] Specifically, the refrigeration amount of the power battery is calculated according to the superheat degree of the heat exchanger 14 and the outlet water temperature of the heat exchanger 14 (or the inlet water temperature of the power battery), and the first rotation speed of the compressor 1, wherein the outlet water temperature of the heat exchanger 14 (or the inlet water temperature of the power battery) can be obtained by the first temperature sensor 22. The refrigeration amount of the cab is calculated according to the difference between the temperature in the cab and the preset temperature, and the second rotation speed of the compressor 1, wherein the temperature in the cab can be obtained by the fourth temperature sensor 8. The ratio of the first rotation speed of the compressor 1 to the second rotation speed of the compressor 1 is calculated, and the ratio is taken as the opening degree ratio of the first electronic expansion valve 13 and the second electronic expansion valve 5.

[0107] In addition, the low-pressure pressure of the refrigeration system is obtained by the first pressure sensor 9 to measure the low-pressure state of the system, the high-pressure pressure of the refrigeration system is obtained by the second pressure sensor 4 to measure the high-pressure state of the system, and the superheat degree can be calculated according to the first pressure sensor 9 and the second pressure sensor 4 to protect the system.

[0108] In the present application, the vehicle controller includes a processor and a memory, wherein the memory stores a computer program, and the processor executes the computer program to perform the vehicle integrated thermal management control method described in any one of the above.

[0109] Exemplary vehicle As a third aspect of the present application, the present application provides a vehicle, comprising: a central control screen air conditioner operation interface; a one-key automatic air conditioner button; The vehicle integrated thermal management system.

[0110] The vehicle of the present application is a new energy commercial vehicle, including but not limited to a pure electric tractor, a pure electric truck, a pure electric dump truck, a pure electric medium and light truck, a hydrogen fuel tractor, a hydrogen fuel truck, and a hydrogen fuel dump truck.

[0111] Exemplary electronic device Hereinafter, as a fourth aspect of the present application, the present application further provides an electronic device. Referring to Figure 8 to describe the electronic device according to the embodiments of the present application.

[0112] Figure 8 FIG. 1 illustrates a structural block diagram of an electronic device according to an embodiment of the present application.

[0113] As Figure 8 shown, the electronic device 80 includes one or more processors 801 and a memory 802.

[0114] The processor 801 can be a central processing unit (CPU) or other form of processing unit having data processing and / or instruction execution capabilities, and can control other components in the electronic device 80 to perform desired functions.

[0115] The memory 802 can include one or more computer program products that can include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory, for example, can include random access memory (RAM), cache, and / or the like. The non-volatile memory, for example, can include read-only memory (ROM), hard disk, flash memory, and / or the like. One or more computer program instructions can be stored on the computer-readable storage media, and the processor 801 can run the program instructions to implement the vehicle integrated thermal management control method of the embodiments of the present application described above and / or other desired functions.

[0116] In one example, the electronic device 80 can further include an input device 803 and an output device 804, which are interconnected through a bus system and / or other forms of connection mechanism (not shown).

[0117] When the electronic device is a stand-alone device, the input device 803 can be a communication network connector for receiving the collected input signals from the first device and the second device.

[0118] In addition, the input device 803 can further include, for example, a keyboard, a mouse, and / or the like.

[0119] The output device 804 can externally output various information, including the determined distance information, direction information, etc. The output device 804 can include, for example, a display, a speaker, a printer, a communication network and a remote output device connected thereto, etc.

[0120] Of course, in order to simplify, Figure 8 Only some of the components of the electronic device 80 related to the present application are shown in the figure, and components such as buses, input / output interfaces, etc. are omitted. In addition, the electronic device 80 can include any other appropriate components according to the specific application.

[0121] Exemplary computer-readable storage medium As a fifth aspect of the present application, a computer-readable storage medium is provided, the storage medium storing a computer program, the computer program being used to execute the steps in the vehicle integrated thermal management control method of each of the above embodiments.

[0122] The computer-readable storage medium can take the form of one or more combinations of any type of readable medium. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium, for example, can include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or apparatus, or any suitable combination of the above. More specific examples (a non-exhaustive list) of the readable storage medium include an electrical connection having one or more wires, a portable disc, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0123] In addition to the above method and device, the embodiments of the present application can also be a computer program product, which includes computer program information, and the computer program information causes the processor to execute the steps in the vehicle integrated thermal management control method of various embodiments of the present application when the processor is running.

[0124] The computer program product can be written in any combination of one or more programming languages to perform the operations of the embodiments of the present application, including object-oriented programming languages such as Java, C++, etc., and conventional procedural programming languages such as "C" language or similar programming languages. The program code can be executed entirely on the user computing device, partially on the user device, as an independent software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0125] The basic principles of the application are described above in connection with specific embodiments, but it should be noted that the advantages, benefits, effects and the like mentioned in the present application are only examples and are not limiting, and it cannot be considered that these advantages, benefits, effects and the like are necessarily possessed by each embodiment of the present application. In addition, the specific details of the above disclosure are only for the purpose of example and for the purpose of understanding, and are not limiting, and the above details do not limit the present application to necessarily adopt the above specific details to realize.

[0126] The block diagrams of the devices, apparatuses, equipment, systems involved in the present application are only illustrative examples and are not intended to require or imply the connection, arrangement, configuration as shown in the block diagram. As those skilled in the art will recognize, these devices, apparatuses, equipment, systems can be connected, arranged, configured in any manner. Words such as "include", "contain", "have" and the like are open-ended words, mean "including but not limited to", and can be used interchangeably. The words "or" and "and" used herein mean the word "and / or", and can be used interchangeably unless the context clearly indicates otherwise. The word "such as" used herein means the phrase "such as but not limited to", and can be used interchangeably.

[0127] It should also be noted that in the devices, equipment and methods of the present application, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be considered as equivalent solutions of the present application.

Claims

1. A vehicle integrated thermal management control method, characterized by, The method is suitable for a whole vehicle integrated thermal management system, and the whole vehicle integrated thermal management system comprises a power battery thermal management system, a cab air conditioning system, an electric drive thermal management system and a high-voltage accessory thermal management system; The control method comprises: obtaining the temperature of the power battery; determining the thermal management requirement of the power battery according to the temperature of the power battery, wherein the thermal management requirement of the power battery comprises a cooling mode, a heating mode, a cooling self-circulation mode and a temperature difference self-circulation mode; controlling the power battery thermal management system according to the thermal management requirement of the power battery.

2. The integrated vehicle thermal management control method of claim 1, wherein, The triggering mode of the cab air conditioning system comprises a one-key automatic air conditioning button; The control method further comprises: after obtaining the electric signal of the one-key automatic air conditioning button, determining the first thermal management requirement of the cab according to the current cab temperature and the preset temperature; controlling the cab air conditioning system according to the first thermal management requirement of the cab.

3. The integrated vehicle thermal management control method of claim 2, wherein, Determining the first thermal management requirement of the cab according to the current cab temperature and the preset temperature comprises: when the difference between the current cab temperature and the preset temperature is greater than or equal to a first temperature difference threshold, determining that the first thermal management requirement of the cab is the cooling mode; when the difference between the current cab temperature and the preset temperature is less than a second temperature difference threshold, determining that the first thermal management requirement of the cab is the heating mode, wherein the first temperature difference threshold is greater than the second temperature difference threshold; when the difference between the current cab temperature and the preset temperature is greater than or equal to the second temperature difference threshold and less than the first temperature difference threshold, determining that the first thermal management requirement of the cab is the fan mode.

4. The vehicle integrated thermal management control method of claim 3, wherein, Controlling the cab air conditioning system according to the first thermal management requirement of the cab comprises: when the first thermal management requirement of the cab is the cooling mode, controlling the blowing mode of the cab to be face blowing; when the first thermal management requirement of the cab is the heating mode, controlling the blowing mode of the cab to be foot blowing; when the first thermal management requirement of the cab is the fan mode, controlling the blowing mode of the cab to be face blowing and foot blowing at the same time.

5. The vehicle integrated thermal management control method of claim 1, wherein, The triggering mode of the cab air conditioning system comprises a central control screen air conditioning operation interface; The control method further comprises: after obtaining the electric signal of at least one air conditioning function button in the central control screen air conditioning operation interface, determining the second thermal management requirement of the cab according to the function corresponding to the at least one air conditioning function button; controlling the cab air conditioning system according to the second thermal management requirement of the cab.

6. The vehicle integrated thermal management control method of claim 1, wherein, Determining the thermal management requirement of the power battery according to the temperature of the power battery comprises: when the temperature of the power battery is greater than or equal to a first temperature threshold, determining that the thermal management requirement of the power battery is to enter the cooling self-circulation mode; when the temperature of the power battery is greater than or equal to a second temperature threshold, determining that the thermal management requirement of the power battery is to enter the cooling mode, and monitoring the temperature of the power battery in the cooling mode; when the temperature of the power battery in the cooling self-circulation mode is less than or equal to a fourth temperature threshold, determining that the thermal management requirement of the power battery is to exit the cooling self-circulation mode; wherein the third temperature threshold is greater than the first temperature threshold and less than the second temperature threshold, and the fourth temperature threshold is less than the first temperature threshold. According to the temperature of the power battery, determining the thermal management requirement of the power battery, further comprises:

7. The vehicle integrated thermal management control method of claim 1, wherein, when the temperature of the power battery in the heating mode is greater than or equal to a sixth temperature threshold, determining that the thermal management requirement of the power battery is to exit the heating mode; wherein the sixth temperature threshold is greater than the fifth temperature threshold and less than the fourth temperature threshold. According to the temperature of the power battery, determining the thermal management requirement of the power battery, further comprises: when the temperature difference between the highest temperature of the cell monomer in the power battery and the lowest temperature of the cell monomer is greater than or equal to a third temperature difference threshold, determining that the thermal management requirement of the power battery is to enter a temperature difference self-circulation mode.

8. The vehicle integrated thermal management control method of claim 1, wherein, comprising: a power battery thermal management system, the power battery thermal management system comprising a compressor, a condenser, a first electronic expansion valve, a heat exchanger, a first PTC heater, a first water pump; 9. A vehicle integrated thermal management system, characterized by, a cab air conditioning system, the cab air conditioning system comprising a compressor, a condenser, a second electronic expansion valve, an evaporator, a heater core, a second water pump, a second PTC heater; an electric drive thermal management system, the electric drive thermal management system comprising a radiator, a third water pump; a high-voltage accessory thermal management system, the high-voltage accessory thermal management system comprising a radiator, a fourth water pump; a vehicle control unit, the vehicle control unit comprising a processor and a memory, the memory storing a computer program, and the processor executing the computer program to execute the vehicle integrated thermal management control method of any one of claims 1-8. comprising: a central control screen air conditioning operation interface; 10. A vehicle characterized by comprising: a one-key automatic air conditioning button; the vehicle integrated thermal management system of claim 9. ​ ​

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