Three-electric management system, vehicle, temperature control system, method, device and medium

Abstract

The present invention provides a three-electric management system, a vehicle, a temperature control system, a method, a device and a medium, wherein the three-electric management system includes a power battery, a thermal heater, a cooler, a power supply device, an electric drive device, a radiator, a two-position four-way valve and a four-position four-way valve which are connected in series in sequence to form a loop; in the present invention, by switching and controlling the two-position four-way valve and the four-position four-way valve to change the flow direction of the coolant, the coupling of the temperature control system between the power supply device, the electric drive device and the power battery can be achieved, so that the temperature control of the power supply device, the electric drive device and the power battery can be independent of each other and can be interrelated, so as to meet the cooling, heating, insulation and temperature uniformity requirements of each device with the least number of parts and cost, and not only can it be accurately guaranteed that each device can be at the most suitable operating temperature under various temperature conditions, but also the energy utilization rate is increased, thereby reducing energy consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle thermal management, and in particular to a three-electric management system, a vehicle, a temperature control system, a method, a device and a medium. Background Art

[0002] To ensure the performance of electric vehicles under various driving conditions, the temperature of key components, such as the power battery, power supply, and electric drive, must be controlled to maintain optimal operating temperatures. Thermal management for these components typically utilizes efficient liquid temperature control systems, which control the switching of cooling, heating, temperature equalization, and insulation functions within each component.

[0003] However, the existing air conditioning thermal management system, battery thermal management system, power supply thermal management system and electric drive thermal management system are generally independent systems. In order to meet the requirements of different working conditions, the above systems need to be thermally controlled separately. The unreasonable thermal control planning leads to high energy consumption of the temperature control system. Summary of the Invention

[0004] The purpose of the present invention is to provide a three-electric management system, a vehicle, a temperature control system, a method, a device and a medium to solve the technical problem of unreasonable heat control planning in existing temperature control systems, which leads to high energy consumption.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] Provided is a three-electric management system, comprising a power battery, a thermal heater, a cooler, a power supply device, an electric drive device, a radiator, a two-position four-way valve, and a four-position four-way valve, which are sequentially connected in series to form a circuit, wherein the outlet of the cooler is connected to the inlet of the power battery and the inlet of the power supply device;

[0007] The two-position four-way valve includes a first valve port, a second valve port, a third valve port, and a fourth valve port, which are sequentially distributed. The first valve port is connected between the outlet of the cooler and the inlet of the power battery. The second valve port is connected to the outlet of the power battery. The third valve port is connected to the inlet of the thermal heater.

[0008] The four-position four-way valve includes a fifth valve port, a sixth valve port, a seventh valve port, and an eighth valve port, which are sequentially distributed. The fifth valve port is connected between the outlet of the cooler and the inlet of the power supply device, the sixth valve port is connected to the outlet of the radiator, the seventh valve port is connected to the fourth valve port, and the eighth valve port is connected between the electric drive device and the radiator.

[0009] In the two-position four-way valve and the four-position four-way valve, two adjacent valve ports can be communicated with each other.

[0010] Optionally, the three-electric management system further includes a battery water pump, the inlet of the battery water pump is connected to the outlet of the cooler and the first valve port, and the outlet of the battery water pump is connected to the inlet of the power battery.

[0011] Optionally, the three-electric management system further includes a motor water pump, the inlet of the motor water pump is connected to the outlet of the cooler and the fifth valve port, and the outlet of the motor water pump is connected to the inlet of the power supply device.

[0012] Optionally, the three-electric management system further includes an expansion tank connected between the battery water pump and the cooler.

[0013] A temperature control system is also provided, characterized in that it includes the above-mentioned three-electric management system and a heat pump air-conditioning system for controlling the temperature of the passenger compartment, and the cooler is provided with a first channel and a second channel that can exchange heat with each other; the first channel is connected to the three-electric management system, and the second channel is connected to the heat pump air-conditioning system.

[0014] Optionally, the heat pump air conditioning system includes an evaporator, and a compressor, an indoor condenser, a first expansion valve, an outdoor condenser, a second expansion valve, the cooler, and a gas-liquid separator that are connected in sequence to form a loop, the inlet of the evaporator is connected between the outdoor condenser and the second expansion valve, and the outlet of the evaporator is connected to the gas-liquid separator.

[0015] Optionally, the heat pump air-conditioning system also includes a first solenoid valve and a third solenoid valve; the third solenoid valve is arranged at the inlet of the evaporator, the inlet of the first solenoid valve is connected between the indoor condenser and the first expansion valve, and the outlet of the first solenoid valve is connected between the outlet of the outdoor condenser and the inlet of the third solenoid valve.

[0016] Optionally, the heat pump air conditioning system further includes a second solenoid valve, the inlet of the second solenoid valve is connected between the outlet of the outdoor condenser and the outlet of the first solenoid valve, and the outlet of the second solenoid valve is connected to the inlet of the gas-liquid separator.

[0017] Optionally, the heat pump air conditioning system further includes a thermal expansion valve, the inlet of the thermal expansion valve is connected to the inlet of the third solenoid valve, and the outlet of the thermal expansion valve is connected to the inlet of the evaporator.

[0018] A vehicle is also provided, comprising the above-mentioned temperature control system.

[0019] A temperature control method is also provided, comprising:

[0020] Obtaining the ambient temperature of the vehicle and the real-time temperature of the vehicle's temperature control system, including the power battery temperature, power supply unit temperature, and electric drive unit temperature;

[0021] The temperature control system is controlled according to the temperature control requirements of the vehicle's passenger compartment, ambient temperature, power battery temperature, power supply unit temperature and electric drive unit temperature.

[0022] A temperature control device is also provided, comprising:

[0023] An acquisition module is used to obtain the ambient temperature of the vehicle and the real-time temperature of the vehicle's temperature control system, including the temperature of the power battery, the power supply unit, and the electric drive unit;

[0024] The control module is used to control the temperature control system according to the temperature control requirements of the vehicle's passenger compartment, ambient temperature, power battery temperature, power supply unit temperature and electric drive unit temperature.

[0025] A computer device is also provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the steps of the temperature control method are implemented when the processor executes the computer program.

[0026] A readable storage medium is also provided. The readable storage medium stores a computer program. When the computer program is executed by a processor, the steps of the temperature control method are implemented.

[0027] The three-electric management system, vehicle, temperature control system, method, device and medium provided by the present invention have the following beneficial effects:

[0028] The three-electric management system in the present invention includes a power battery, a thermal heater, a cooler, a power supply device, an electric drive device, a radiator, a two-position four-way valve, and a four-position four-way valve, which are connected in series in sequence to form a loop. By switching and controlling the two-position four-way valve and the four-position four-way valve to change the flow direction of the coolant, the coupling of the temperature control systems between the power supply device, the electric drive device, and the power battery can be achieved, so that the temperature control of the power supply device, the electric drive device, and the power battery can be independent of each other and can be interrelated, so as to meet the cooling, heating, insulation, and temperature uniformity requirements of each device with the least number of parts and cost. It can not only accurately ensure that each device can be at the most suitable operating temperature under various temperature conditions, but also increase the energy utilization rate, thereby reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 A schematic diagram of the overall structure of a vehicle temperature control system provided by one embodiment of the present invention;

[0031] Figure 2 Schematic diagram of a first temperature control mode of a vehicle temperature control system according to an embodiment of the present invention;

[0032] Figure 3 Schematic diagram of the second temperature control mode of the vehicle temperature control system in one embodiment of the present invention;

[0033] Figure 4 Schematic diagram of a third temperature control mode of a vehicle temperature control system according to an embodiment of the present invention;

[0034] Figure 5 Schematic diagram of a fourth temperature control mode of a vehicle temperature control system according to an embodiment of the present invention;

[0035] Figure 6 Schematic diagram of a fifth temperature control mode of a vehicle temperature control system according to an embodiment of the present invention;

[0036] Figure 7 Schematic diagram of the sixth temperature control mode of the vehicle temperature control system in one embodiment of the present invention;

[0037] Figure 8 Schematic diagram of the seventh temperature control mode of the vehicle temperature control system in one embodiment of the present invention;

[0038] Figure 9 Schematic diagram of an eighth temperature control mode of a vehicle temperature control system according to an embodiment of the present invention;

[0039] Figure 10 A schematic flow chart of a method for controlling a vehicle temperature control system according to an embodiment of the present invention;

[0040] Figure 11 FIG. 1 is a schematic structural diagram of a vehicle temperature control system control device according to an embodiment of the present invention.

[0041] Among them, the reference numerals in the figures are:

[0042] 1-Expansion tank; 2-Battery water pump; 3-Power battery; 4-Thermal heater (PTC heater); 5-Cooler; 6-Two-position four-way valve; 7-Four-position four-way valve; 8-Motor water pump; 9-Power supply unit; 10-Electric drive unit; 11-Radiator 11; 12-Compressor 12; 13-Indoor condenser 13; 14-First expansion valve; 15-First solenoid valve; 16-Outdoor condenser; 17-Second expansion valve; 18-Second solenoid valve; 19-Third solenoid valve; 20-Thermal expansion valve; 21-Evaporator; 22-Gas-liquid separator. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0044] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0045] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0046] Please also refer to Figures 1 to 9 Now, the three-electric management system provided by the embodiment of the present invention is described.

[0047] like Figure 1 As shown, the three-electric management system in this embodiment includes a power battery 3, a thermal heater 4 (which can be a PTC heater 4), a cooler 5, a power supply unit 9, an electric drive unit 10, a radiator 11, a two-position four-way valve 6, and a four-position four-way valve 7, which are connected in series to form a circuit. The outlet of the cooler 5 is connected to the inlet of the power battery 3 and the inlet of the power supply unit 9. In this embodiment, the inlets and outlets of the power battery 3, the thermal heater 4, the cooler 5, the power supply unit 9, the electric drive unit 10, and the radiator 11 are all the pipeline inlets and outlets of the corresponding devices.

[0048] Specifically, the two-position four-way valve 6 includes a first valve port, a second valve port, a third valve port, and a fourth valve port, which are distributed in sequence. The first valve port is connected between the outlet of the cooler 5 and the inlet of the power battery 3, the second valve port is connected to the outlet of the power battery 3, and the third valve port is connected to the inlet of the thermal heater 4. The four-position four-way valve 7 includes a fifth valve port, a sixth valve port, a seventh valve port, and an eighth valve port, which are distributed in sequence. The fifth valve port is connected between the outlet of the cooler 5 and the inlet of the power supply device 9, the sixth valve port is connected to the outlet of the radiator 11, the seventh valve port is connected to the fourth valve port, and the eighth valve port is connected between the electric drive device 10 and the radiator 11.

[0049] In the two-position four-way valve 6 and the four-position four-way valve 7, adjacent valve ports can be interconnected. Specifically, the two-position four-way valve 6 can be controlled to achieve: the first valve port is connected to the second valve port, the second valve port is connected to the third valve port, the third valve port is connected to the fourth valve port, and the fourth valve port is connected to the first valve port. Specifically, the four-position four-way valve 7 can be controlled to achieve: the fifth valve port is connected to the sixth valve port, the sixth valve port is connected to the seventh valve port, the seventh valve port is connected to the eighth valve port, and the eighth valve port is connected to the fifth valve port.

[0050] By controlling the above-mentioned two-position four-way valve 6 and four-position four-way valve 7, a variety of passage schemes can be controlled to achieve different temperature control strategies, specifically:

[0051] like Figure 2 As shown, in hot summer weather, the second valve port of the two-position four-way valve 6 is controlled to be connected to the third valve port, and the fifth valve port of the four-position four-way valve 7 is controlled to be connected to the sixth valve port. The power battery 3, PTC heater 4, cooler 5, and two-position four-way valve 6 form an independent circuit; the power supply unit 9, electric drive unit 10, radiator 11, and four-position four-way valve 7 form an independent circuit. At this time, a portion of the coolant flows through the power supply unit 9, electric drive unit 10, and radiator 11 in sequence, and then returns to the four-position four-way valve 7 to continue circulating. The heat of the power supply unit 9 and electric drive unit 10 is carried by the coolant to the radiator 11 for heat exchange with the outside air, thereby cooling the power supply unit 9 and electric drive unit 10. When the temperature of the power battery 3 is higher than the set value, a portion of the coolant flows through the power battery 3, two-position four-way valve 6, PTC heater 4 (the PTC heater 4 is not working at this time), cooler 5 (for cooling), and then returns to the power battery 3. The heat of the power battery 3 is removed by the cooler 5 to achieve the purpose of cooling. That is, in the higher temperature mode, the power battery 3 and the power supply unit 9 and / or the electric drive unit 10 can each independently dissipate heat. The coolant circulates in their respective local circuits, and each heat exchange removes heat, achieving efficient heat dissipation. The first mode is a mode in which the power battery 3, the power supply unit 9, and / or the electric drive unit 10 are cooled independently in a high temperature environment.

[0052] like Figure 3As shown, under normal temperature conditions, when the temperature of the power battery 3, power supply unit 9, or electric drive unit 10 exceeds their respective set values, it is necessary to dissipate heat from the overheated device. This is specifically implemented as follows: the first and fourth valve ports of the two-position four-way valve 6 are connected, and the second and third valve ports are connected; the sixth and seventh valve ports of the four-position four-way valve 7 are connected, so that a series circuit is formed between the power supply unit 9, electric drive unit 10, radiator 11, power battery 3, PTC heater 4, and cooler 5. At this time, the coolant flows sequentially through the power supply unit 9, electric drive unit 10, radiator 11, four-position four-way valve 7, two-position four-way valve 6, power battery 3, two-position four-way valve 6, thermistor heater 4 (not operating at this time), and cooler 5 (not operating at this time), forming a heat dissipation cycle. In other words, at normal temperatures, heat is dissipated simultaneously from the power battery 3, power supply unit 9, and electric drive unit 10 through the radiator 11.

[0053] like Figure 4 As shown, under normal temperature conditions, the power battery 3 is within a predetermined range and the internal temperature difference is greater than a preset value. Therefore, the power battery 3 needs to be temperature-balanced (even if the temperature difference between various regions within the power battery 3 is within a certain range). When the temperature of the power supply unit 9 or the electric drive unit 10 is higher than the set value, the power supply unit 9 and the electric drive unit 10 are cooled. This is specifically implemented as follows: the first and second valve ports of the two-position four-way valve 6 are controlled to communicate, and the fifth and sixth valve ports of the four-position four-way valve 7 are controlled to communicate. At this point, a portion of the coolant flows sequentially through the power battery 3 and the two-position four-way valve 6, forming a circulation to ensure that the temperature difference between various regions within the power battery 3 is reduced and remains within a certain range. Another portion of the coolant flows sequentially through the power supply unit 9, the electric drive unit 10, the radiator 11, and the four-position four-way valve 7, forming another cooling cycle. In other words, under normal temperature conditions, the temperatures of the power battery 3, the power supply unit 9, or the electric drive unit 10 can be independently controlled to ensure a uniform temperature for the power battery 3 and to heat the power supply unit 9 or the electric drive unit 10.

[0054] like Figure 5 As shown, under low temperature weather conditions, when the temperature of the power battery 3 is lower than the set value, the power battery 3 needs to be heated or kept warm, which is specifically implemented as follows: the first valve port and the fourth valve port, the second valve port and the third valve port of the two-position four-way valve 6 are controlled to be connected, and the seventh valve port and the eighth valve port of the four-position four-way valve 7 are controlled to be connected. The coolant flows through the power supply device 9, the electric drive device 10, the four-position four-way valve 7, the two-position four-way valve 6, the power battery 3, the two-position four-way valve 6, the thermistor heater 4 (not working at this time), and the cooler 5 (not working at this time) in sequence, thereby forming a heating and insulation cycle, that is, using the waste heat of the power supply device 9 and / or the electric drive device 10 to heat or keep the power battery 3 warm.

[0055] like Figure 6As shown, under low temperature weather conditions, the temperature of the power battery 3 is in a predetermined area and the internal temperature difference is greater than the set value. The power battery 3 needs to be temperature-equalized. When the power supply device 9 and / or the electric drive device 10 is lower than the set value, the power supply device 9 and / or the electric drive device 10 needs to be kept warm. The specific implementation is as follows: the first valve port and the second valve port of the two-position four-way valve 6 are controlled to be connected, and the fifth valve port and the eighth valve port of the four-position four-way valve 7 are controlled to be connected. A part of the coolant flows through the power battery 3 and the two-position four-way valve 6 in sequence to form a cooling cycle, so that the temperature difference of each area inside the power battery 3 is within a certain range; the other part of the coolant flows through the power supply device 9, the electric drive device 10, and the four-position four-way valve 7 in sequence to form another insulation cycle.

[0056] like Figure 7 As shown, under low temperature weather conditions, the temperatures of the power battery 3, the power supply device 9, and the electric drive device 10 are all lower than their respective set values. It is necessary to heat the power battery 3 and keep the power supply device 9 and the electric drive device 10 warm. The specific implementation is as follows: the second valve port and the third valve port of the two-position four-way valve 6 are controlled to be connected, and the fifth valve port and the eighth valve port of the four-position four-way valve 7 are controlled to be connected. At this time, the power battery 3, the two-position four-way valve 6, the PTC heater 4, and the cooler 5 form an independent circuit, and the power supply device 9, the electric drive device 10, and the four-position four-way valve 7 form an independent circuit. At this time, a portion of the coolant flows through the power battery 3, the two-position four-way valve 6, the thermistor heater 4 (working at this time), and the cooler 5 (not working at this time) in sequence to form a circulation. The thermistor heater 4 heats this portion of the coolant to increase the temperature of the power battery 3; the other portion of the coolant flows through the high power supply device 9, the electric drive device 10, and the four-position four-way valve 7 in sequence to form a heat preservation circulation, which is isolated from the circuit where the power battery 3 is located and performs zone temperature control.

[0057] like Figure 8 As shown, in cold or severe winter weather conditions, the power battery 3 is lower than the set value, and the power battery 3 needs to be heated, which is specifically implemented as follows: control the first valve port and the fourth valve port of the two-position four-way valve 6 to be connected, and the second valve port and the third valve port to be connected, and control the seventh valve port and the eighth valve port of the four-position four-way valve 7 to be connected, and the coolant flows in sequence through the power supply device 9, the electric drive device 10, the four-position four-way valve 7, the two-position four-way valve 6, the power battery 3, the two-position four-way valve 6, the thermistor heater 4 (working at this time), and the cooler 5 (working at this time), forming a heating and insulation cycle to heat the entire circuit.

[0058] like Figure 9As shown, in cold or severe winter weather conditions, when the temperature of the power battery 3 is in a predetermined temperature range and the internal temperature difference is greater than a set value, the power battery 3 needs to be temperature-equalized, which is specifically implemented as follows: the first valve port and the second valve port of the two-position four-way valve 6 are controlled to be connected. At this time, the power battery 3 and the two-position four-way valve 6 form an independent circuit, and the power supply device 9, the electric drive device 10, the four-position four-way valve 7, the two-position four-way valve 6 (working at this time), and the cooler 5 form a circuit, and the coolant flows through the power battery 3 and the two-position four-way valve 6 in sequence to form a cooling cycle.

[0059] Among them, the above Figures 2 to 9 The coolant flow direction is shown by the thick black arrows in each figure.

[0060] As can be seen from the above, the three-electric management system in this embodiment, by switching and controlling the two-position four-way valve 6 and the four-position four-way valve 7 to change the flow direction of the coolant, can achieve multiple coupling modes of the entire circuit, including the coupling of the temperature control systems between the power supply device 9, the electric drive device 10, and the power battery 3, so that the entire circuit can be cooled or heated, or the local circuit can be heated or cooled, etc., and the power battery 3 can be heated and kept warm by using the waste heat of the power supply device 9 / electric drive device 10. The three-electric management system in this embodiment provides multiple temperature control strategies, so that the temperature control of the power supply device 9, the electric drive device 10, and the power battery 3 can be independent of each other but can also be interrelated, so as to meet the cooling, heating, insulation, and temperature uniformity requirements of each device with the least number of parts and cost. It can not only accurately ensure that each device is at the most suitable operating temperature under various temperature conditions, but also improve the service life of the three-electric system, and increase the energy utilization rate, thereby reducing energy consumption and helping to increase the cruising range of the electric vehicle.

[0061] Optionally, the three-electric management system in this embodiment further includes a battery water pump 2 and a motor water pump 8. The inlet of the battery water pump 2 is connected to the outlet of the cooler 5 and the first valve port, and the outlet of the battery water pump 2 is connected to the inlet of the power battery 3. The inlet of the motor water pump 8 is connected to the outlet of the cooler 5 and the fifth valve port, and the outlet of the motor water pump 8 is connected to the inlet of the power supply device 9. The battery water pump 2 drives the flow of coolant in the local circuit where the power battery 3 is located, and the motor water pump 8 drives the flow of coolant in the local circuit where the power supply device 9 / electric drive device 10 is located. The battery water pump 2 and the motor water pump 8 each operate independently and can control the opening (output kinetic energy) or closing (no output of kinetic energy) of their respective circuits. In conjunction with the control of the two-position four-way valve 6 / four-position four-way valve 7, the above-mentioned coupling schemes are implemented.

[0062] Optionally, the three-electric management system in this embodiment further includes an expansion tank 1, which is connected between the battery water pump 2 and the cooler 5. The expansion tank 1 stores coolant, which circulates and replenishes the circuit where the power battery 3 is located, achieving functions such as cooling the circuit and balancing the hydraulic pressure.

[0063] Please also refer to Figures 1 to 9 Now, the temperature control system provided by the embodiment of the present invention is described.

[0064] like Figure 1 As shown, the temperature control system in this embodiment includes the three-electric management system described in Example 1 and a heat pump air conditioning system for controlling the passenger compartment temperature. Cooler 5 includes a first channel and a second channel capable of exchanging heat with each other. The first channel connects to the three-electric management system, and the second channel connects to the heat pump air conditioning system.

[0065] The heat pump air-conditioning system and the three-electric management system are independent of each other. The heat pump air-conditioning system can independently control the temperature of the passenger compartment, and can also realize coupling between the heat pump air-conditioning system and the three-electric management system through heat exchange in the first channel and the second channel in the cooler 5. The two exchange heat and assist each other in temperature management, which can more accurately manage the temperature of various parts of the vehicle, increase energy utilization, and help increase the cruising range of electric vehicles.

[0066] Optionally, the heat pump air conditioning system in this embodiment includes an evaporator 21, as well as a compressor 12, an indoor condenser 13, a first expansion valve 14, an outdoor condenser 16, a second expansion valve 17, a cooler 5, and a gas-liquid separator 22, which are sequentially connected to form a circuit. The inlet of the evaporator 21 is connected between the outdoor condenser 16 and the second expansion valve 17, and the outlet of the evaporator 21 is connected to the gas-liquid separator 22. The heat pump air conditioning system also includes a first solenoid valve 15 and a third solenoid valve 19. The third solenoid valve 19 is disposed at the inlet of the evaporator 21. The inlet of the first solenoid valve 15 is connected between the indoor condenser 13 and the first expansion valve 14, and the outlet of the first solenoid valve 15 is connected between the outlet of the outdoor condenser 16 and the inlet of the third solenoid valve 19 to control the flow and opening of different paths. The heat pump air conditioning system also includes a thermal expansion valve 20. The inlet of the thermal expansion valve 20 is connected to the inlet of the third solenoid valve 19, and the outlet of the thermal expansion valve 20 is connected to the inlet of the evaporator 21. The compressor 12 is an electric compressor 12 , and the first expansion valve 14 and the second expansion valve 17 are both electronic expansion valves, which facilitate automatic control of the temperature control system through other electronic control units.

[0067] The coupling between the heat pump air conditioning system and the three-electric management system in the temperature control system assists each other in temperature management, as follows:

[0068] like Figure 2 As shown, in the hot summer weather, when the vehicle passenger compartment needs to be cooled, the compressor 12 starts, the first solenoid valve 15 is closed, and the refrigerant flows through the indoor condenser 13 (no heat exchange), the first expansion valve 14 (fully open), the outdoor condenser 16 (heat exchange), the third solenoid valve 19, the thermal expansion valve 20, the evaporator 21, the gas-liquid separator 22, and finally returns to the compressor 12, and the vehicle passenger compartment is cooled through the evaporator 21. In addition, the second expansion valve 17 also remains open, and the refrigerant flowing out of the outdoor condenser 16 flows into the second channel of the cooler 5, flows out and merges into the gas-liquid separator 22, and finally returns to the compressor 12. In this route, the refrigerant enters the second channel of the cooler 5 and cools the coolant in the first channel for heat exchange. Under this operating condition of the three-electric management system, the coolant flowing through the cooler 5 is in a low-temperature state, and cools the power battery 3 during operation in the loop. For this cooling loop, see the first embodiment for the cooling circuit. Figure 2 The relevant description will not be repeated here.

[0069] like Figure 8 As shown, in winter, when there is a need to heat the vehicle's passenger compartment, under cold or severe weather conditions, the compressor 12 starts, closing the first expansion valve 14 and the third solenoid valve 19. The refrigerant then flows sequentially through the indoor condenser 13 (for heat exchange), the first solenoid valve 15, the second expansion valve 17, the outdoor condenser 16 (for heat exchange with the evaporator 21), and the gas-liquid separator 22 before returning to the compressor 12 to complete the cycle. The vehicle's passenger compartment is then heated through the indoor condenser 13. As can be seen from the operating conditions in Example 1, the thermal heater 4 is in operation at this time, so the coolant flowing through the cooler 5 in the three-electric management system is in a heated state. The refrigerants in the first and second channels of the cooler 5 exchange heat with each other, ensuring that both are in a heated state. This means that the heat pump air conditioning system and the three-electric management system mutually assist in heating.

[0070] like Figure 9 As shown, in winter, when there is a need to heat the vehicle's passenger compartment, under cold or severe weather conditions, the compressor 12 starts, closing the first expansion valve 14 and the third solenoid valve 19. The refrigerant then flows sequentially through the indoor condenser 13 (for heat exchange), the first solenoid valve 15, the second expansion valve 17, the outdoor condenser 16 (for heat exchange with the evaporator 21), the gas-liquid separator 22, and returns to the compressor 12 to complete the cycle. The vehicle's passenger compartment is then heated via the indoor condenser 13. In conjunction with this operating condition in Example 1, it can be seen that the motor water pump 8 starts at this point, and the coolant flows sequentially through the power supply unit 9, the electric drive unit 10, the four-position four-way valve 7, the two-position four-way valve 6, the thermic heater 4 (currently operating), the cooler 5 (for heat exchange with the evaporator 21), and returns to the motor water pump 8 to complete the cycle, serving as a low-temperature heat source to supply heat to the heat pump.

[0071] In the above content Figure 8 、 Figure 9 In the working conditions shown, the external ambient temperature is the same, and the main difference lies in the temperature condition of the power battery 3 in the three-electric management system. Different control strategies are executed according to the difference between its temperature and the set temperature.

[0072] Optionally, the temperature control system further includes a second solenoid valve 18, the inlet of which is connected between the outlet of the outdoor condenser 16 and the outlet of the first solenoid valve 15. That is, the inlet of the second solenoid valve 18 is simultaneously connected to the outlet of the outdoor condenser 16, the outlet of the first solenoid valve 15, the inlet of the third solenoid valve 19, and the inlet of the second expansion valve 17. The outlet of the second solenoid valve 18 is connected to the inlet of the gas-liquid separator 22. The provision of the second solenoid valve 18 is equivalent to adding a new circuit to the temperature control system. The specific application environment is as follows:

[0073] like Figure 5 、 Figure 6 、 Figure 7 As shown, in low temperature weather conditions, when there is a need for heating in the vehicle passenger compartment, the compressor 12 starts, and the first solenoid valve 15, the second expansion valve 17 and the third solenoid valve 19 are closed. The refrigerant flows through the indoor condenser 13 (heat exchange), the first expansion valve 14, the outdoor condenser 16 (as the evaporator 21 for heat exchange), the second solenoid valve 18, and the gas-liquid separator 22 in sequence and returns to the compressor 12, and the heating of the vehicle passenger compartment is implemented through the indoor condenser 13.

[0074] exist Figure 5 、 Figure 6 、 Figure 7 In the working conditions shown, there are differences in the three-electric management system, and in these three working conditions, the three-electric management system and the heat pump air-conditioning system are in an isolated state, which does not affect the control strategy of the heat pump air-conditioning system. Therefore, the heat pump air-conditioning system is not described separately according to these three working conditions. The control strategies under these three working conditions are detailed in the relevant descriptions in Example 1 and will not be repeated here.

[0075] From the above content, it can be seen that the temperature control system in this embodiment includes a heat pump air-conditioning system for controlling the temperature of the passenger compartment and a three-electric management system for controlling the temperature of the three-electric system. The two can perform heating or cooling independently of each other, and can also be coupled to assist each other in achieving temperature control, and the waste heat in the three-electric system is introduced into the passenger compartment for heating. This not only enables the entire temperature control system to accurately and independently control the temperature of various parts of the electric vehicle, so that passengers and various vehicle components can be in a suitable temperature environment, but also increases energy utilization, which helps to increase the cruising range of the electric vehicle.

[0076] This embodiment also provides a vehicle, including the above-mentioned temperature control system, that is, including the above-mentioned three-electric management system and heat pump air-conditioning system.

[0077] In this embodiment, the working principle of the temperature control system on the vehicle is as follows:

[0078] (1) The first temperature control mode: Figure 2 As shown, under the high temperature weather conditions in summer, the motor water pump 8 works, and the coolant flows through the power supply device 9, the electric drive device 10 and the radiator 11 in sequence, and then returns to the motor water pump 8 through the four-position four-way valve 7. The heat of the power supply device 9 and the electric drive device 10 is carried by the coolant to the radiator 11 for heat exchange with the air outside the vehicle, thereby achieving the purpose of cooling; when the temperature of the power battery 3 is higher than the set value of the power battery 3, the battery water pump 2 works, and the coolant flows through the power battery 3, the two-position four-way valve 6, the PTC heater 4 (not working at this time), the cooler 5 (working at this time, that is, the electric compressor 12 is started, the first solenoid valve 12 and the second solenoid valve 18 are closed, and the refrigerant flows through the indoor condenser 13 (no heat exchange), the first electronic expansion valve 14 (fully open), outdoor condenser 16 (heat exchange), second electronic expansion valve 17 (working), cooler 5, gas-liquid separator 22 returns to the electric compressor 12 to form a refrigerant refrigeration cycle) and returns to the battery water pump 2, and the heat of the power battery 3 is taken away by the cooler 5 to achieve the purpose of cooling; when the vehicle passenger compartment has a cooling demand, the electric compressor 12 starts, and the first solenoid valve 15 and the second solenoid valve 18 are closed. The refrigerant flows through the indoor condenser 13 (no heat exchange), the first electronic expansion valve 14 (fully open), outdoor condenser 16 (heat exchange), the third solenoid valve 19, the thermal expansion valve 20, the evaporator 21, the gas-liquid separator 22 and returns to the electric compressor 12, and the vehicle passenger compartment is cooled and cooled through the evaporator.

[0079] (2) Second temperature control mode: Figure 3 As shown, under normal temperature weather conditions, when the temperature of the power battery 3 or the power supply device 9 or the electric drive device 10 is higher than the respective set values, it is necessary to dissipate heat from the devices with excessively high temperatures, and both can be cooled through the radiator 11. The specific implementation is as follows: the battery water pump 2 and the motor water pump 8 are started, and the coolant flows through the power supply device 9, the electric drive device 10, the radiator 11, the four-position four-way valve 7, the two-position four-way valve 6, the battery water pump 2, the power battery 3, the two-position four-way valve 6, the PTC heater 4 (not working at this time), the cooler 5 (not working at this time), and the motor water pump 8 to form a heat dissipation cycle.

[0080] (3) The third temperature control mode: Figure 4As shown, under normal temperature conditions, when the temperature of the power battery 3 is within the predetermined range and the internal temperature difference is greater than the preset value, the power battery 3 needs to be temperature-balanced. However, when the temperature of the power supply unit 9 or the electric drive unit 10 is higher than the set value, the power supply unit 9 and the electric drive unit 10 need to be cooled. The battery water pump 2 is activated, and the coolant flows through the power battery 3, the two-position four-way valve 6, and then returns to the battery water pump 2 to form a cycle. The motor water pump 8 is activated, and the coolant flows through the power supply unit 9, the electric drive unit 10, the radiator 11, the four-position four-way valve 7, and then returns to the motor water pump 8 to form another cooling cycle. In this mode, the power supply unit 9, the electric drive unit 10, and the power battery 3 share the radiator 11 for cooling.

[0081] (4) The fourth temperature control mode: Figure 5 As shown, under low temperature weather conditions, when the temperature of the power battery 3 is lower than the set value, the waste heat of the power supply device 9 and the electric drive device 10 can be used to heat or keep the power battery 3 warm. The specific implementation is as follows: the battery water pump 2 and the motor water pump 8 are started, and the coolant flows through the power supply device 9, the electric drive device 10, the four-position four-way valve 7, the two-position four-way valve 6, the battery water pump 2, the power battery 3, the two-position four-way valve 6, the PTC heater 4 (not working at this time), the cooler 5 (not working at this time), and the motor water pump 8 to form a heating and insulation cycle; when there is a heating demand in the vehicle passenger compartment, the electric compressor 12 is started, the first solenoid valve 15, the second electronic expansion valve 17 and the third solenoid valve 19 are closed, and the refrigerant flows through the indoor condenser 13 (heat exchange), the first electronic expansion valve 14, the outdoor condenser 16 (as an evaporator for heat exchange), the second solenoid valve 18, and the gas-liquid separator 22 in sequence to return to the electric compressor 12, and the heating of the vehicle passenger compartment is implemented through the indoor condenser 13.

[0082] (5) The fifth temperature control mode: Figure 6 As shown, under low temperature weather conditions, the temperature of the power battery 3 is within a predetermined range and the internal temperature difference is greater than a set value. The power battery 3 needs to be temperature-equalized, the battery water pump 2 is started, and the coolant flows through the power battery 3, the two-position four-way valve 6, and returns to the battery water pump 2 in sequence to form a cycle; and when the power supply device 9 and / or the electric drive device 10 is lower than the set value, the power supply device 9 and / or the electric drive device 10 are kept warm, the motor water pump 8 is started, and the coolant flows through the power supply device 9, the electric drive device 10, the four-position four-way valve 7, and returns to the motor water pump 8 in sequence to form another insulation cycle; when there is a need for heating in the vehicle passenger compartment, the electric compressor 12 is started, the first solenoid valve 15, the second electronic expansion valve 17, and the third solenoid valve 19 are closed, and the refrigerant flows through the indoor condenser 13 (heat exchange), the first electronic expansion valve 14, the outdoor condenser 16 (as an evaporator for heat exchange), the second solenoid valve 18, the gas-liquid separator 22, and returns to the electric compressor 12, and the vehicle passenger compartment is heated through the indoor condenser 13.

[0083] (6) Sixth temperature control mode: Figure 7 As shown, under low temperature weather conditions, when the temperature of the power battery 3 is lower than the set value of the power battery 3, the power battery 3 needs to be heated, the battery water pump 2 is started, and the coolant flows through the power battery 3, the two-position four-way valve 6, the PTC heater 4 (working at this time), the cooler 5 (not working at this time), and returns to the battery water pump 2 to form a cycle; when the temperatures of the power supply device 9 and the electric drive device 10 are both lower than their respective set values, the power supply device 9 and the electric drive device 10 need to be kept warm, the motor water pump 8 is started, and the coolant flows through the high-voltage power supply 9 and the electric drive device 10 in sequence. The device 9, the drive motor 10, the four-position four-way valve 7 return to the motor water pump 8 to form another insulation cycle; when there is a need for heating in the vehicle passenger compartment, the electric compressor 12 starts, and the first solenoid valve 15, the second electronic expansion valve 17 and the third solenoid valve 19 are closed. The refrigerant flows through the indoor condenser 13 (heat exchange), the first electronic expansion valve 14, the outdoor condenser 16 (as an evaporator for heat exchange), the second solenoid valve 18, and the gas-liquid separator 22 in sequence and returns to the electric compressor 12, and the heating of the vehicle passenger compartment is implemented through the indoor condenser 13.

[0084] (7) Seventh temperature control mode: Figure 8 As shown, in winter, under cold or severe weather conditions, the power battery 3 is below its set value and needs to be heated. The battery water pump 2 and the motor water pump 8 are activated, and the coolant flows sequentially through the power supply unit 9, the electric drive unit 10, the four-position four-way valve 7, the two-position four-way valve 6, the battery water pump 2, the power battery 3, the two-position four-way valve 6, the PTC heater 4 (operating at this time), the cooler 5, and the motor water pump 8, forming a heating and heat preservation cycle. When the vehicle passenger compartment needs heating, the electric compressor 12 is activated, the first electronic expansion valve 14, the second solenoid valve 18, and the third solenoid valve 19 are closed, and the refrigerant flows sequentially through the indoor condenser 13 (for heat exchange), the first solenoid valve 15, the second electronic expansion valve 17, the cooler 16 (for heat exchange as an evaporator), the gas-liquid separator 22, and returns to the electric compressor 12, heating the vehicle passenger compartment through the indoor condenser 13. In other words, the waste heat of the power supply unit 9, the electric drive unit 10, and the power battery 3 is used as a low-temperature heat source for heating in the heat pump air conditioning system.

[0085] (8) The eighth temperature control mode: Figure 9As shown, in winter cold or severe cold weather conditions, the temperature of the power battery 3 is in the predetermined temperature range and the internal temperature difference is greater than the set value. The power battery 3 needs to be temperature-equalized. The battery water pump 2 is started, and the coolant flows through the power battery 3 and the two-position four-way valve 6 in sequence to return to the battery water pump 2 to form a cycle; when there is a heating demand in the vehicle passenger compartment, the electric compressor 12 is started, the first electronic expansion valve 14, the second solenoid valve 18 and the third solenoid valve 19 are closed, and the refrigerant flows through the indoor condenser 13 (heat exchange), the first solenoid valve 15, the second electronic expansion valve 1 7. The cooler 16 (serving as the evaporator for heat exchange) and the gas-liquid separator 22 return to the electric compressor 12, and the vehicle passenger compartment is heated through the indoor condenser 13; at this time, the motor water pump 8 is started, and the coolant flows in sequence through the power supply device 9, the electric drive device 10, the four-position four-way valve 7, the two-position four-way valve 6, the PTC heater 4 (working at this time), the cooler 5 (serving as the evaporator for heat exchange), and returns to the motor water pump 8 to form a cycle, using the waste heat of the power supply device 9, the electric drive device 10 and the PTC heater 4 as a low-temperature heat source when the heat pump air-conditioning system is heating.

[0086] This embodiment adopts the above-mentioned temperature control system on the vehicle. Through different coupling schemes, the temperature control of the power supply device 9, the electric drive device 10 and the power battery 3 can be independent of each other or interrelated, so as to meet their requirements for cooling, heating, insulation and temperature uniformity with the minimum number of parts and cost. Under various ambient temperatures and different driving conditions, the power battery 3, the power supply device 9 and the electric drive device 10 can be kept at a suitable operating temperature, thereby improving the service life of the three electric devices. When appropriate, the waste heat of the power supply device 9 and the electric drive device 10 can also be used to heat the power battery 3 or as a low-temperature heat source for heating the heat pump air-conditioning system, thereby improving energy efficiency and increasing the cruising range of the electric vehicle.

[0087] In one embodiment, if Figure 10 As shown, a temperature control method is provided, which is applied in Figure 1 The temperature control system in the example is used to illustrate the following steps:

[0088] S10: Acquire the ambient temperature of the vehicle and the real-time temperature of the temperature control system on the vehicle, where the real-time temperature includes the temperature of the power battery, the temperature of the power supply unit, and the temperature of the electric drive unit.

[0089] During vehicle operation, the vehicle's temperature control device needs to obtain the real-time temperature of the vehicle's temperature control system and the ambient temperature of the vehicle. The real-time temperature includes the temperature of the power battery, the power supply unit, and the electric drive unit.

[0090] S20: Control the temperature control system according to the temperature control requirements of the vehicle's passenger compartment, the ambient temperature, the power battery temperature, the power supply unit temperature, and the electric drive unit temperature.

[0091] After obtaining the ambient temperature of the above-mentioned vehicle and the real-time temperature of the temperature control system on the vehicle, the temperature control system is controlled according to the temperature control requirements of the vehicle's passenger compartment, the ambient temperature, the power battery temperature, the power supply unit temperature and the electric drive unit temperature. The temperatures of the power battery, power supply unit and electric drive unit are controlled according to the actual conditions of the temperature control system, and the temperature of the passenger compartment in the vehicle is controlled according to the actual needs of the user to avoid overcooling or overheating of the passenger compartment, thereby reducing the user experience.

[0092] In this embodiment, by obtaining the ambient temperature of the above-mentioned vehicle and the real-time temperature of the temperature control system on the vehicle, the real-time temperature includes the power battery temperature, the power supply device temperature and the electric drive device temperature, so as to control the temperature control system according to the temperature control requirements of the vehicle's passenger compartment, the ambient temperature, the power battery temperature, the power supply device temperature and the electric drive device temperature. The temperature of the passenger compartment and the temperature of the three electrics can be controlled according to actual conditions, so that the power battery, the power supply device and the electric drive device are at a suitable operating temperature, thereby improving the service life of the three electrics, reducing costs and increasing the cruising range of the electric vehicle.

[0093] In one embodiment, step S20, i.e., controlling the temperature control system based on the temperature control requirements of the passenger compartment, the ambient temperature, the power battery temperature, the power supply device temperature, and the electric drive device temperature, specifically includes the following steps:

[0094] S21: When the ambient temperature is within a first temperature range, the temperature control system is controlled according to the temperature of the power battery and the temperature control requirements of the passenger compartment.

[0095] The first temperature range is a temperature range under high-temperature environmental conditions. When the ambient temperature is within the first temperature range, the temperature control system is controlled based on the power battery temperature and the temperature control requirements of the passenger compartment to cool the various devices in the temperature control system and the passenger compartment under high-temperature environmental conditions.

[0096] S22: When the ambient temperature is within the second temperature range, the temperature control system is controlled according to the temperature of the power battery, the temperature of the power supply device, and the temperature of the electric drive device.

[0097] The second temperature range is a temperature range under normal temperature conditions. When the ambient temperature is within the second temperature range, the temperature control system is controlled based on the power battery temperature, the power supply device temperature, and the electric drive device temperature to cool or heat the power battery, the power supply device, and the electric drive device according to their actual temperatures under normal temperature conditions, so that each device is at an appropriate operating temperature.

[0098] S23: When the ambient temperature is within the third temperature range, the temperature control system is controlled according to the temperature control requirements of the passenger compartment, the power battery temperature, the power supply unit temperature, and the electric drive unit temperature.

[0099] The third temperature range is the temperature range under low-temperature weather conditions. When the ambient temperature is within the third temperature range, the temperature control system is controlled based on the temperature control requirements of the passenger compartment, as well as the temperatures of the power battery, power supply unit, and electric drive unit. In this way, the power battery, power supply unit, and electric drive unit are heated or insulated according to their actual temperatures under low-temperature weather conditions, so that each device is maintained at an appropriate operating temperature.

[0100] S24: When the ambient temperature is within the fourth temperature range, the temperature control system is controlled according to the temperature control requirements of the passenger compartment and the temperature of the power battery.

[0101] The fourth temperature range corresponds to a temperature range experienced in cold or severely cold winter weather. When the ambient temperature is within the fourth temperature range, the temperature control system is controlled based on the passenger compartment temperature control requirements and the power battery temperature. This allows the heat pump air conditioning system to utilize waste heat from the power battery as a low-temperature heat source for heating, thereby improving energy efficiency and thereby increasing the electric vehicle's range.

[0102] In this embodiment, when the ambient temperature is within a first temperature range, the temperature control system is controlled based on the power battery temperature and the temperature control requirements of the passenger compartment. When the ambient temperature is within a second temperature range, the temperature control system is controlled based on the power battery temperature, the power supply unit temperature, and the electric drive unit temperature. When the ambient temperature is within a third temperature range, the temperature control system is controlled based on the temperature control requirements of the passenger compartment, the power battery temperature, the power supply unit temperature, and the electric drive unit temperature. When the ambient temperature is within a fourth temperature range, the temperature control system is controlled based on the temperature control requirements of the passenger compartment and the power battery temperature. The steps of controlling the temperature control system based on the temperature control requirements of the passenger compartment, the ambient temperature, the power battery temperature, the power supply unit temperature, and the electric drive unit temperature are detailed. This ensures that the power battery, power supply unit, and electric drive unit maintain appropriate operating temperatures under various ambient temperatures and driving conditions, thereby extending the service life of the three electric systems. When appropriate, waste heat from the power supply unit and the electric drive unit can be used to heat the power battery or as a low-temperature heat source for heat pump air conditioning, thereby improving energy efficiency and increasing the range of the electric vehicle.

[0103] In one embodiment, step S21, i.e., performing cooling control on the temperature control system according to the power battery temperature and the temperature control requirements of the passenger compartment, specifically includes the following steps:

[0104] S211: Determining whether the power battery temperature is greater than a first preset battery temperature, and determining whether the passenger compartment needs to be cooled;

[0105] S212: If the power battery temperature is greater than a first preset battery temperature and the passenger compartment needs to be cooled, control the temperature control system to enter a first temperature control mode.

[0106] In this embodiment, when the ambient temperature is within the first temperature range, that is, when the vehicle is in a hot weather environment, the temperature control device needs to determine whether the power battery temperature is greater than the first preset battery temperature and whether the passenger compartment needs to be cooled. If the power battery temperature is greater than the first preset battery temperature and the passenger compartment needs to be cooled, it means that the power battery needs to be cooled and the passenger compartment needs to be cooled, and the temperature control system is controlled to enter the first temperature control mode. In the first temperature control mode, the control of each component of the temperature control system is as described above, and the coolant flow path of the first temperature control mode is as follows: Figure 2 As shown, no further details are given here.

[0107] In this embodiment, by determining whether the power battery temperature is greater than the first preset battery temperature and whether the passenger compartment needs to be cooled, if the power battery temperature is greater than the first preset battery temperature and the passenger compartment needs to be cooled, the temperature control system is controlled to enter the first temperature control mode, which clarifies the control process of the temperature control system under high temperature weather conditions, so as to cool the power battery and cool the passenger compartment, thereby ensuring the performance of the power battery, and then ensuring the performance of the vehicle, and improving the user's riding experience.

[0108] In one embodiment, step S22, i.e., the specific process of controlling the temperature control system according to the temperature of the power battery, the temperature of the power supply device, and the temperature of the electric drive device, specifically includes the following steps:

[0109] S221: When the temperature of the power supply device is greater than the first preset power supply temperature, or the temperature of the electric drive device is greater than the first preset electric drive temperature, determine whether the power battery temperature is greater than the second preset battery temperature.

[0110] In this embodiment, when the ambient temperature is within the second temperature range, that is, when the vehicle is in normal temperature weather conditions, it is necessary to determine whether the power supply device temperature is greater than a first preset power supply temperature and whether the electric drive device temperature is greater than a first preset electric drive temperature. If the power supply device temperature is greater than the first preset power supply temperature or the electric drive device temperature is greater than the first preset electric drive temperature, it is determined whether the power battery temperature is greater than a second preset battery temperature. The second preset battery temperature is lower than the first preset battery temperature.

[0111] S222: If the power battery temperature is greater than a second preset battery temperature, control the temperature control system to enter a second temperature control mode.

[0112] After determining whether the power battery temperature is greater than a second preset battery temperature, if the power battery temperature is greater than the second preset battery temperature, the temperature control system is controlled to enter a second temperature control mode. Specifically, when the power supply unit temperature is greater than the first preset power supply temperature, or the electric drive unit temperature is greater than the first preset electric drive temperature, and if the power battery temperature is also greater than the second preset battery temperature, indicating that the power battery, power supply unit, and electric drive unit are all at risk of overheating, the temperature control system is controlled to enter the second temperature control mode to cool the overheated power battery, power supply unit, and electric drive unit under normal temperature conditions, keeping them at a suitable operating temperature and thereby ensuring vehicle performance.

[0113] In the second temperature control mode, the control of each component of the temperature control system is as described above, and the coolant flow path of the second temperature control mode is as follows: Figure 3 As shown, no further details are given here.

[0114] S223: If the power battery temperature is less than or equal to the second preset battery temperature and there is a power battery temperature equalization requirement, control the temperature control system to enter a third temperature control mode.

[0115] It should be understood that during the operation of the power battery, there may be temperature differences between different areas inside the power battery. In order to avoid excessive temperature differences between different areas inside the power battery, thereby affecting battery performance, the power battery needs to be temperature-equalized, that is, the temperature differences between different areas inside the power battery need to be controlled within a certain range.

[0116] After determining whether the power battery temperature is greater than the second preset battery temperature, if the power battery temperature is less than or equal to the second preset battery temperature and there is a need for power battery temperature equalization, the temperature control system is controlled to enter the third temperature control mode. Specifically, when the power supply unit temperature is greater than the first preset power supply temperature, or the electric drive unit temperature is greater than the first preset electric drive temperature, if the power battery temperature is less than or equal to the second preset battery temperature and there is a need for power battery temperature equalization, this indicates that the power supply unit or electric drive unit is at risk of overheating. Although the power battery is not at risk of overheating, the temperature difference between different areas within the power battery is greater than the preset temperature difference, resulting in a significant temperature difference within the power battery and requiring temperature equalization of the power battery. In this case, the power supply unit or electric drive unit and the power battery need to be controlled separately to avoid mutual interference. The temperature control system is then controlled to enter the third temperature control mode to cool the power supply unit or electric drive unit and achieve temperature equalization between the power batteries to ensure the performance of the power supply unit, electric drive unit, and power battery.

[0117] In the third temperature control mode, the control of each component of the temperature control system is as described above, and the coolant flow path of the third temperature control mode is as follows: Figure 4 As shown, no further details are given here.

[0118] In this embodiment, when the temperature of the power supply device is greater than the first preset power supply temperature, or the temperature of the electric drive device is greater than the first preset electric drive temperature, it is determined whether the power battery temperature is greater than the second preset battery temperature; if the power battery temperature is greater than the second preset battery temperature, the temperature control system is controlled to enter the second temperature control mode; if the power battery temperature is less than or equal to the second preset battery temperature, and there is a demand for power battery temperature equalization, the temperature control system is controlled to enter the third temperature control mode. This clarifies the specific process of controlling the temperature control system according to the power battery temperature, power supply device temperature and electric drive device temperature under normal temperature weather conditions, so that the power battery, power supply device and electric drive device are at a suitable operating temperature, thereby ensuring vehicle performance.

[0119] In one embodiment, step S23, i.e., controlling the temperature control system according to the temperature control requirements of the passenger compartment, the temperature of the power battery, the temperature of the power supply device, and the temperature of the electric drive device, specifically includes the following steps:

[0120] S231: When there is a need for heating in the passenger compartment, if the power battery temperature is less than or equal to the third preset battery temperature, and the power supply device temperature is greater than or equal to the second preset power supply temperature, and it is determined that the electric drive device temperature is greater than or equal to the second preset electric drive temperature, the temperature control system is controlled to enter the fourth temperature control mode.

[0121] When the ambient temperature is within the third temperature range, that is, when the vehicle is in low-temperature weather conditions, it is necessary to determine whether the vehicle's passenger compartment requires heating, whether the power battery temperature is greater than a third preset battery temperature, whether the power supply unit temperature is less than a second preset power supply temperature, and whether the electric drive unit temperature is less than a second preset electric drive temperature. The third preset battery temperature is less than the second preset battery temperature.

[0122] When there is a need for heating in the passenger compartment, the heat pump air-conditioning system can be used to independently heat the passenger compartment. If the power battery temperature is less than or equal to the third preset battery temperature, and the power supply unit temperature is greater than or equal to the second preset power supply temperature, and it is determined that the electric drive unit temperature is greater than or equal to the second preset electric drive temperature, it means that the power battery temperature is low and needs to be heated, while the power supply unit and the electric drive unit have high temperatures and can generate excess heat. In this case, the temperature control system is controlled to enter the fourth temperature control mode to utilize the waste heat of the power supply unit and the electric drive unit to heat the power battery, thereby improving energy utilization efficiency and reducing energy consumption.

[0123] In the fourth temperature control mode, the control of each component of the temperature control system is as described above, and the coolant flow path of the fourth temperature control mode is as follows: Figure 5 As shown, no further details are given here.

[0124] S232: When there is a need for heating in the passenger compartment, if the power battery temperature is greater than the third preset battery temperature, the power supply device temperature is less than the second preset power supply temperature, the electric drive device temperature is less than the second preset electric drive temperature, and there is a need for power battery temperature equalization, then the temperature control system is controlled to enter the fifth temperature control mode.

[0125] When the passenger compartment requires heating, the heat pump air conditioning system can be used to independently heat the passenger compartment. If the power battery temperature is greater than the third preset battery temperature, the power supply unit temperature is less than the second preset power supply temperature, and the electric drive unit temperature is less than the second preset electric drive temperature, and there is a need for power battery temperature equalization, this indicates that the power battery temperature is high and the temperature difference between internal regions is greater than the preset temperature difference. The internal temperature difference of the power battery is large, requiring cooling and equalization of the power battery temperature. Meanwhile, the power supply unit and electric drive unit temperatures are lower and require heating, necessitating separate management of the power battery, the power supply unit, and the electric drive unit. In this case, the temperature control system is controlled to enter the fifth temperature control mode to equalize the power battery temperature and heat the power supply unit and the electric drive unit to ensure their performance.

[0126] In the fifth temperature control mode, the control of each component of the temperature control system is as described above, and the coolant flow path of the fifth temperature control mode is as follows: Figure 6 As shown, no further details are given here.

[0127] S233: When there is a need for heating in the passenger compartment, if the power battery temperature is lower than the third preset battery temperature, the power supply device temperature is lower than the second preset power supply temperature, and the electric drive device temperature is lower than the second preset electric drive temperature, the temperature control system is controlled to enter the sixth temperature control mode.

[0128] When the passenger compartment requires heating, the heat pump air conditioning system can be used to independently heat the passenger compartment. If the power battery temperature is lower than the third preset battery temperature, the power supply unit temperature is lower than the second preset power supply temperature, and the electric drive unit temperature is lower than the second preset electric drive temperature, this indicates that the power battery temperature is low and requires heating. However, the power supply unit and electric drive unit temperatures are moderate and do not require heating but need to be maintained, necessitating separate management of the power battery, power supply unit, and electric drive unit. In this case, the temperature control system is controlled to enter the sixth temperature control mode to heat the power battery and maintain the temperature of the power supply unit and electric drive unit to ensure their performance.

[0129] In the sixth temperature control mode, the control of each component of the temperature control system is as described above, and the coolant flow path of the sixth temperature control mode is as follows: Figure 7 As shown, no further details are given here.

[0130] In this embodiment, when there is a demand for passenger compartment heating, if the power battery temperature is less than or equal to a third preset battery temperature, the power supply unit temperature is greater than or equal to a second preset power supply temperature, and it is determined that the electric drive unit temperature is greater than or equal to the second preset electric drive temperature, the temperature control system is controlled to enter a fourth temperature control mode. When there is a demand for passenger compartment heating, if the power battery temperature is greater than the third preset battery temperature, the power supply unit temperature is less than the second preset power supply temperature, and the electric drive unit temperature is less than the second preset electric drive temperature, and there is a demand for power battery temperature equalization, the temperature control system is controlled to enter a fifth temperature control mode. When there is a demand for passenger compartment heating, if the power battery temperature is less than the third preset battery temperature, the power supply unit temperature is less than the second preset power supply temperature, and the electric drive unit temperature is less than the second preset electric drive temperature, the temperature control system is controlled to enter a sixth temperature control mode. This clarifies the specific process of controlling the temperature control system based on the passenger compartment temperature control demand, power battery temperature, power supply unit temperature, and electric drive unit temperature in low temperature weather conditions. While ensuring the passenger compartment heating demand and improving the user experience, the power battery, power supply unit, and electric drive unit are maintained at appropriate operating temperatures, thereby ensuring vehicle performance.

[0131] In one embodiment, step S23, that is, performing heating control on the temperature control system according to the temperature control requirements of the passenger compartment and the temperature of the power battery, specifically includes the following steps:

[0132] S241: When there is a need for heating in the passenger compartment, if the power battery temperature is lower than a fourth preset battery temperature, the temperature control system is controlled to enter a seventh temperature control mode.

[0133] When the ambient temperature is within the fourth temperature range, meaning the vehicle is experiencing cold or severe winter weather, it is determined whether the passenger compartment requires heating. If so, the temperature control system utilizes the three-electric management system as a low-temperature heat source for the heat pump air conditioning system. Specifically, waste heat from the electric drive unit and power supply unit within the three-electric management system can be used to heat the passenger compartment. Furthermore, to ensure vehicle performance in cold or severe winter weather, different temperature control modes are implemented based on the power battery temperature. The fourth preset battery temperature is lower than the third preset battery temperature.

[0134] Among them, when there is a need for heating in the passenger compartment, if the power battery temperature is lower than the fourth preset battery temperature, it means that the power battery temperature is low and the power battery needs to be heated. During the power battery heating process, the waste heat of the power battery, electric drive device and power supply device can also be used as a low-temperature heat source for the heat pump air-conditioning system to provide heat to the heat pump air-conditioning system and heat the passenger compartment.

[0135] In the seventh temperature control mode, the control of each component of the temperature control system is as described above, and the coolant flow path of the seventh temperature control mode is as follows: Figure 8 As shown, no further details are given here.

[0136] S242: When there is a need for heating in the passenger compartment, if the power battery temperature is greater than or equal to the fourth preset battery temperature and there is a need for power battery temperature equalization, control the temperature control system to enter the eighth temperature control mode.

[0137] Among them, when there is a need for heating in the passenger compartment, if the power battery temperature is greater than or equal to the fourth preset battery temperature, and there is a need for power battery temperature equalization, it means that the power battery temperature is high, the temperature difference between the internal areas of the power battery is greater than the preset temperature difference, the internal temperature difference of the power battery is large, and the power battery needs to be temperature-equalized. In this case, the power battery, the power supply device, and the electric drive device need to be partitioned and controlled, and the temperature control system needs to be controlled to enter the eighth temperature control mode, so as to utilize the waste heat of the electric drive device and the power supply device as a low-temperature heat source when the heat pump air-conditioning system is heating, so as to provide heat to the heat pump air-conditioning system and heat the passenger compartment.

[0138] In the eighth temperature control mode, the control of each component of the temperature control system is as described above, and the coolant flow path of the eighth temperature control mode is as follows: Figure 9 As shown, no further details are given here.

[0139] Furthermore, the temperature control system is controlled according to the temperature control requirements of the passenger compartment and the temperature of the power battery, including:

[0140] In this embodiment, when there is a demand for heating in the passenger compartment, if the power battery temperature is lower than the fourth preset battery temperature, the temperature control system is controlled to enter the seventh temperature control mode; when there is a demand for heating in the passenger compartment, if the power battery temperature is greater than or equal to the fourth preset battery temperature, and there is a demand for power battery temperature equalization, the temperature control system is controlled to enter the eighth temperature control mode. This clarifies the specific process of controlling the temperature control system for heating according to the temperature control demand of the passenger compartment and the power battery temperature when the ambient temperature is in the fourth temperature range. The three-electric management system is used as a low-temperature heat source for heating in the heat pump air-conditioning system, thereby improving energy utilization efficiency and reducing energy consumption.

[0141] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0142] In one embodiment, a temperature control device is provided, which corresponds to the temperature control method in the above embodiment. Figure 11 As shown, the temperature control device includes an acquisition module 111 and a control module 112. The functional modules are described in detail as follows:

[0143] A temperature control device, comprising:

[0144] An acquisition module 111 is configured to acquire the ambient temperature of the vehicle and the real-time temperature of the temperature control system of the vehicle, the real-time temperature including the temperature of the power battery, the temperature of the power supply device, and the temperature of the electric drive device;

[0145] The control module 112 is configured to control the temperature control system according to the temperature control requirements of the passenger compartment of the vehicle, the ambient temperature, the power battery temperature, the power supply device temperature, and the electric drive device temperature.

[0146] Furthermore, the control module 112 is specifically configured to:

[0147] When the ambient temperature is within a first temperature range, the temperature control system is refrigerated according to the power battery temperature and the temperature control requirements of the passenger compartment;

[0148] When the ambient temperature is within a second temperature range, controlling the temperature control system according to the power battery temperature, the power supply device temperature, and the electric drive device temperature;

[0149] When the ambient temperature is within a third temperature range, controlling the temperature control system according to a temperature control requirement of the passenger compartment, the temperature of the power battery, the temperature of the power supply unit, and the temperature of the electric drive unit;

[0150] When the ambient temperature is within a fourth temperature range, the temperature control system is subjected to heating control according to a temperature control requirement of the passenger compartment and the temperature of the power battery.

[0151] Furthermore, the control module 112 is further configured to:

[0152] determining whether the power battery temperature is greater than a first preset battery temperature, and determining whether the passenger compartment needs to be cooled;

[0153] If the power battery temperature is greater than the first preset battery temperature and the passenger compartment needs to be cooled, the temperature control system is controlled to enter a first temperature control mode.

[0154] Furthermore, the control module 112 is further configured to:

[0155] When the power supply device temperature is greater than a first preset power supply temperature, or the electric drive device temperature is greater than a first preset electric drive temperature, determining whether the power battery temperature is greater than a second preset battery temperature;

[0156] If the power battery temperature is greater than the second preset battery temperature, controlling the temperature control system to enter a second temperature control mode;

[0157] If the power battery temperature is less than or equal to the second preset battery temperature and there is a demand for power battery temperature equalization, the temperature control system is controlled to enter a third temperature control mode.

[0158] Furthermore, the control module 112 is further configured to:

[0159] When there is a need for heating in the passenger compartment, if the power battery temperature is less than or equal to a third preset battery temperature, the power supply device temperature is greater than or equal to a second preset power supply temperature, and it is determined that the electric drive device temperature is greater than or equal to the second preset electric drive temperature, controlling the temperature control system to enter a fourth temperature control mode;

[0160] When there is a need for heating the passenger compartment, if the power battery temperature is greater than the third preset battery temperature, the power supply device temperature is less than the second preset power supply temperature, the electric drive device temperature is less than the second preset electric drive temperature, and there is a need for power battery temperature equalization, then controlling the temperature control system to enter the fifth temperature control mode;

[0161] When there is a need for heating in the passenger compartment, if the power battery temperature is lower than the third preset battery temperature, the power supply device temperature is lower than the second preset power supply temperature, and the electric drive device temperature is lower than the second preset electric drive temperature, the temperature control system is controlled to enter the sixth temperature control mode.

[0162] Furthermore, the control module 112 is further configured to:

[0163] When there is a need for heating in the passenger compartment, if the power battery temperature is lower than a fourth preset battery temperature, controlling the temperature control system to enter a seventh temperature control mode;

[0164] When there is a heating demand for the passenger compartment, if the power battery temperature is greater than or equal to the fourth preset battery temperature and there is a power battery temperature equalization demand, the temperature control system is controlled to enter an eighth temperature control mode.

[0165] For the specific definition of the temperature control device, please refer to the definition of the temperature control method above and will not be repeated here. Each module in the above-mentioned temperature control device can be implemented in whole or in part by software, hardware, or a combination thereof. Each of the above-mentioned modules can be embedded in or independent of the processor in the computer device in hardware form, or can be stored in the memory of the computer device in software form, so that the processor can call and execute the corresponding operations of each of the above modules.

[0166] In one embodiment, a temperature control device is provided, comprising a processor and a memory connected via a system bus. The processor of the temperature control device is configured to provide computing and control capabilities. The memory of the temperature control device comprises a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operating system and computer program stored in the non-volatile storage medium. When executed by the processor, the computer program implements a temperature control method.

[0167] In one embodiment, a temperature control device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the steps of the temperature control method described above are implemented.

[0168] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned temperature control method are implemented.

[0169] Those skilled in the art will appreciate that all or part of the processes in the above-described embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-described methods. In particular, any reference to memory, storage, database, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory.

[0170] Those skilled in the art will clearly understand that for the sake of convenience and brevity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0171] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. A three-electric management system, characterized in that: It includes a power battery, a thermal heater, a cooler, a power supply device, an electric drive device, a radiator, a two-position four-way valve, and a four-position four-way valve connected in series to form a circuit, wherein the outlet of the cooler is connected to the inlet of the power battery and the inlet of the power supply device; The two-position four-way valve includes a first valve port, a second valve port, a third valve port, and a fourth valve port, which are sequentially distributed. The first valve port is connected between the outlet of the cooler and the inlet of the power battery. The second valve port is connected to the outlet of the power battery. The third valve port is connected to the inlet of the thermal heater. The four-position four-way valve includes a fifth valve port, a sixth valve port, a seventh valve port, and an eighth valve port, which are sequentially distributed. The fifth valve port is connected between the outlet of the cooler and the inlet of the power supply device, the sixth valve port is connected to the outlet of the radiator, the seventh valve port is connected to the fourth valve port, and the eighth valve port is connected between the electric drive device and the radiator. In the two-position four-way valve and the four-position four-way valve, two adjacent valve ports can be communicated with each other; The three-electric management system further includes a battery water pump, the inlet of the battery water pump is connected to the outlet of the cooler and the first valve port, and the outlet of the battery water pump is connected to the inlet of the power battery; The three-electric management system further includes a motor water pump, the inlet of which is connected to the outlet of the cooler and the fifth valve port, and the outlet of which is connected to the inlet of the power supply device.

2. The three-electric management system according to claim 1, characterized in that: The three-electric management system further includes an expansion tank connected between the battery water pump and the cooler.

3. A temperature control system, characterized in that: It comprises the three-electric management system according to any one of claims 1 to 2 and a heat pump air-conditioning system for controlling the temperature of the passenger compartment, wherein a first channel and a second channel capable of exchanging heat with each other are provided in the cooler; the first channel is connected to the three-electric management system, and the second channel is connected to the heat pump air-conditioning system.

4. The temperature control system according to claim 3, characterized in that: The heat pump air conditioning system includes an evaporator, and a compressor, an indoor condenser, a first expansion valve, an outdoor condenser, a second expansion valve, the cooler, and a gas-liquid separator that are connected in sequence to form a loop. The inlet of the evaporator is connected between the outdoor condenser and the second expansion valve, and the outlet of the evaporator is connected to the gas-liquid separator.

5. The temperature control system according to claim 4, characterized in that: The heat pump air-conditioning system also includes a first solenoid valve and a third solenoid valve; the third solenoid valve is arranged at the inlet of the evaporator, the inlet of the first solenoid valve is connected between the indoor condenser and the first expansion valve, and the outlet of the first solenoid valve is connected between the outlet of the outdoor condenser and the inlet of the third solenoid valve.

6. The temperature control system according to claim 5, characterized in that: The heat pump air conditioning system further includes a second solenoid valve, an inlet of the second solenoid valve being connected between the outlet of the outdoor condenser and the outlet of the first solenoid valve, and an outlet of the second solenoid valve being connected to the inlet of the gas-liquid separator.

7. The temperature control system according to claim 6, characterized in that: The heat pump air conditioning system further includes a thermal expansion valve, wherein an inlet of the thermal expansion valve is connected to the inlet of the third solenoid valve, and an outlet of the thermal expansion valve is connected to the inlet of the evaporator.

8. A vehicle, characterized in that: Comprising a temperature control system as described in any one of claims 3-7.

9. A temperature control method, characterized in that: The vehicle according to claim 8, comprising: Obtaining the ambient temperature of the vehicle and the real-time temperature of the temperature control system on the vehicle, the real-time temperature including the temperature of the power battery, the temperature of the power supply device, and the temperature of the electric drive device; The temperature control system is controlled according to the temperature control requirements of the passenger compartment of the vehicle, the ambient temperature, the power battery temperature, the power supply device temperature and the electric drive device temperature.

10. The temperature control method according to claim 9, characterized in that: The controlling of the temperature control system according to the temperature control requirements of the passenger compartment of the vehicle, the ambient temperature, the power battery temperature, the power supply device temperature, and the electric drive device temperature includes: When the ambient temperature is within a first temperature range, the temperature control system is refrigerated according to the power battery temperature and the temperature control requirements of the passenger compartment; When the ambient temperature is within a second temperature range, controlling the temperature control system according to the power battery temperature, the power supply device temperature, and the electric drive device temperature; When the ambient temperature is within a third temperature range, controlling the temperature control system according to a temperature control requirement of the passenger compartment, the temperature of the power battery, the temperature of the power supply unit, and the temperature of the electric drive unit; When the ambient temperature is within a fourth temperature range, the temperature control system is subjected to heating control according to a temperature control requirement of the passenger compartment and the temperature of the power battery.

11. The temperature control method according to claim 10, characterized in that: The step of performing cooling control on the temperature control system according to the power battery temperature and the temperature control requirements of the passenger compartment includes: determining whether the power battery temperature is greater than a first preset battery temperature, and determining whether the passenger compartment needs to be cooled; If the power battery temperature is greater than the first preset battery temperature and the passenger compartment needs to be cooled, the temperature control system is controlled to enter a first temperature control mode.

12. The temperature control method according to claim 10, characterized in that: The controlling of the temperature control system according to the power battery temperature, the power supply device temperature, and the electric drive device temperature includes: When the power supply device temperature is greater than a first preset power supply temperature, or the electric drive device temperature is greater than a first preset electric drive temperature, determining whether the power battery temperature is greater than a second preset battery temperature; If the power battery temperature is greater than the second preset battery temperature, controlling the temperature control system to enter a second temperature control mode; If the power battery temperature is less than or equal to the second preset battery temperature and there is a demand for power battery temperature equalization, the temperature control system is controlled to enter a third temperature control mode.

13. The temperature control method according to claim 10, characterized in that: The controlling of the temperature control system according to the temperature control requirements of the passenger compartment, the temperature of the power battery, the temperature of the power supply device, and the temperature of the electric drive device includes: When there is a need for heating in the passenger compartment, if the power battery temperature is less than or equal to a third preset battery temperature, the power supply device temperature is greater than or equal to a second preset power supply temperature, and it is determined that the electric drive device temperature is greater than or equal to the second preset electric drive temperature, controlling the temperature control system to enter a fourth temperature control mode; When there is a need for heating the passenger compartment, if the power battery temperature is greater than the third preset battery temperature, the power supply device temperature is less than the second preset power supply temperature, the electric drive device temperature is less than the second preset electric drive temperature, and there is a need for power battery temperature equalization, then controlling the temperature control system to enter the fifth temperature control mode; When there is a need for heating in the passenger compartment, if the power battery temperature is lower than the third preset battery temperature, the power supply device temperature is lower than the second preset power supply temperature, and the electric drive device temperature is lower than the second preset electric drive temperature, the temperature control system is controlled to enter the sixth temperature control mode.

14. The temperature control method according to claim 10, characterized in that: The step of controlling the temperature control system for heating according to the temperature control requirement of the passenger compartment and the temperature of the power battery includes: When there is a need for heating in the passenger compartment, if the power battery temperature is lower than a fourth preset battery temperature, controlling the temperature control system to enter a seventh temperature control mode; When there is a heating demand for the passenger compartment, if the power battery temperature is greater than or equal to the fourth preset battery temperature and there is a power battery temperature equalization demand, the temperature control system is controlled to enter an eighth temperature control mode.

15. A temperature control device, characterized in that: The vehicle according to claim 8, comprising: an acquisition module, configured to acquire the ambient temperature of the vehicle and the real-time temperature of the temperature control system on the vehicle, wherein the real-time temperature includes the temperature of the power battery, the temperature of the power supply device, and the temperature of the electric drive device; A control module is used to control the temperature control system according to the temperature control requirements of the passenger compartment of the vehicle, the ambient temperature, the power battery temperature, the power supply device temperature and the electric drive device temperature.

16. A readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the temperature control method according to any one of claims 9 to 14 are implemented.

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