Thermal management system, control method thereof, vehicle, and storage medium

Abstract

This application relates to a thermal management system and its control method, a vehicle, and a storage medium, falling under the field of vehicle technology. The thermal management system includes a power battery, a motor, a heater core, a compressor, an evaporator core, a motor radiator, a low-temperature radiator, a heater, a battery water pump, a motor water pump, a heating water pump, a water-cooled condenser, a battery cooler, a multi-way valve, and connectors. The connectors are respectively connected to the outlet of the power battery, the inlet of the motor, the outlet of the heater core, the inlet of the motor radiator, the outlet of the low-temperature radiator, the inlet of the battery water pump, the outlet of the motor water pump, the coolant inlet of the water-cooled condenser, the coolant outlet of the battery cooler, and the coolant inlet of the battery cooler. This achieves a high degree of integration of the battery cooling circuit, the motor cooling circuit, and the passenger compartment circuit, reducing the number of assembled parts and thus meeting the lightweight requirements of new energy vehicles.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to the field of thermal management technology in vehicles, specifically to a thermal management system and its control method, a vehicle, and a storage medium. Background Technology

[0002] Compared to traditional gasoline vehicles, new energy vehicles have more loops in their thermal management systems, such as electric drive cooling loops, battery heating loops, and passenger compartment cooling loops. Each additional loop increases the number of vehicle components, cost, and weight.

[0003] The increased weight of new energy vehicles leads to increased energy consumption and reduced driving range. Therefore, designing a thermal management system to meet the lightweight requirements of new energy vehicles is a pressing technical problem that needs to be solved. Summary of the Invention

[0004] This application provides a thermal management system and its control method, a vehicle, and a storage medium to achieve a high degree of integration of the battery cooling circuit, the motor cooling circuit, and the passenger compartment circuit, reducing the number of assembled parts and thus meeting the lightweight requirements of new energy vehicles. The technical solution of this application is as follows:

[0005] According to a first aspect of this application, a thermal management system is provided, comprising a power battery, a motor, a heater core, a compressor, an evaporator core, a motor radiator, a low-temperature radiator, a heater, a battery water pump, a motor water pump, a heating water pump, a water-cooled condenser, a battery cooler, a multi-way valve, and connectors; the connectors are respectively connected to the outlet of the power battery, the inlet of the motor, the outlet of the heater core, the inlet of the motor radiator, the outlet of the low-temperature radiator, the inlet of the battery water pump, the outlet of the motor water pump, the coolant inlet of the water-cooled condenser, the cold liquid outlet of the battery cooler, and the cold liquid inlet of the battery cooler; the motor... The water pump inlet is connected to the motor outlet, the motor inlet is connected to the motor radiator outlet, the heater outlet is connected to the low-temperature radiator inlet and the heater core inlet via a multi-way valve, the heater inlet is connected to the coolant outlet of the water-cooled condenser, the battery water pump outlet is connected to the power battery inlet, the evaporator core inlet is connected to the refrigerant outlet of the water-cooled condenser, the water-cooled condenser refrigerant inlet is connected to the compressor refrigerant outlet, the compressor inlet is connected to the evaporator core outlet, the battery cooler refrigerant outlet is connected to the compressor refrigerant inlet, and the heating water pump coolant outlet is connected to the heater inlet.

[0006] Based on the aforementioned technical means, connectors are used to connect the power battery, motor, compressor, heater core, evaporator core, motor radiator, low-temperature radiator, heater, battery water pump, motor water pump, heating water pump, water-cooled condenser, battery cooler, multi-way valve, and other components. This achieves a high degree of integration of the battery cooling circuit, motor cooling circuit, and passenger compartment circuit, reducing the number of assembled parts and thus meeting the lightweight requirements of new energy vehicles. Furthermore, by controlling the flow of coolant and refrigerant through connectors and multi-way valves, both coolant and refrigerant circuits are simultaneously implemented, satisfying the thermal management needs of the power battery, motor, and / or passenger compartment, thus meeting the diverse thermal management requirements across various scenarios.

[0007] In one possible implementation, the multi-way valve is a first three-way valve, and the connector is a nine-way valve. The first end of the nine-way valve is connected to the inlet of the motor water pump; the second end is connected to the inlet of the battery water pump; the third end is connected to the coolant inlet of the battery cooler; the fourth end is connected to the coolant outlet of the battery cooler; the fifth end is connected to the inlet of the motor radiator; the sixth end is connected to both the outlet of the low-temperature radiator and the outlet of the heater core; the seventh end is connected to the coolant inlet of the water-cooled condenser; the eighth end is connected to the battery outlet; and the ninth end is connected to the motor inlet. Similarly, the first end of the three-way valve is connected to the heater outlet; the second end is connected to the inlet of the low-temperature radiator; and the third end is connected to the inlet of the heater core.

[0008] Based on the aforementioned technical means, the battery cooling circuit, motor cooling circuit, and passenger compartment circuit are highly integrated through a three-way valve and a nine-way valve, reducing the number of assembled parts and thus meeting the lightweight requirements of new energy vehicles. Furthermore, by controlling the connection relationship between the three-way valve and the nine-way valve, the battery cooling circuit, motor cooling circuit, and passenger compartment circuit can be controlled, thereby enabling flexible control of the thermal management system.

[0009] In one possible implementation, the thermal management system has a first operating mode, a second operating mode, a third operating mode, a fourth operating mode, and a fifth operating mode. In the first operating mode, the first end of the nine-way valve is connected to the fifth end of the nine-way valve, the second end of the nine-way valve is connected to the fourth end of the nine-way valve, the third end of the nine-way valve is connected to the eighth end of the nine-way valve, the sixth end of the nine-way valve is connected to the seventh end of the nine-way valve, the ninth end of the nine-way valve is closed, and the first end and the second end of the three-way valve are both open, while the third end of the three-way valve is closed. In the second operating mode, the first end of the nine-way valve is connected to the third end of the nine-way valve, the second end of the nine-way valve is connected to the fourth end of the nine-way valve, the fifth end of the nine-way valve is connected to the eighth end of the nine-way valve, the sixth end of the nine-way valve is connected to the seventh end of the nine-way valve, the ninth end of the nine-way valve is open, and the first, second, and third ends of the three-way valve are all open. In the third operating mode, the first end of the nine-way valve is connected to the third end of the nine-way valve, and the fifth end of the nine-way valve is connected to the eighth end of the nine-way valve, the sixth end of the nine-way valve is connected to the seventh end of the nine-way valve, the ninth end of the nine-way valve is open, and the first, second, and third ends of the three-way valve are all open. The second terminal is connected to the sixth terminal of the nine-way valve, the fourth terminal of the nine-way valve is connected to the ninth terminal of the nine-way valve, the eighth terminal of the nine-way valve is connected to the seventh terminal of the nine-way valve, the fifth terminal of the nine-way valve is closed, the first terminal and the third terminal of the three-way valve are both open, and the second terminal of the three-way valve is closed; in the fourth working mode, the first terminal of the nine-way valve is connected to the third terminal of the nine-way valve, the second terminal of the nine-way valve is connected to the eighth terminal of the nine-way valve, the fifth terminal of the nine-way valve is connected to the fourth terminal of the nine-way valve, and the sixth terminal of the nine-way valve is connected to the... When the seventh end is connected, the ninth end of the nine-way valve is open, and the first, second, and third ends of the three-way valve are all open. In the fifth working mode, the first and second ends of the nine-way valve are connected, the fourth and seventh ends of the nine-way valve are connected, the fifth and sixth ends of the nine-way valve are connected, the third and eighth ends of the nine-way valve are connected, the fifth end of the nine-way valve is closed, and the first, second, and third ends of the three-way valve are all open.

[0010] Based on the aforementioned technical means, by controlling the connection relationship between the nine-way valve and the three-way valve, the thermal management system can achieve multiple working modes to precisely control the vehicle.

[0011] In one possible implementation, the multi-way valve is a first three-way valve, and the connector includes a first four-way valve, a second four-way valve, a third four-way valve, and a second three-way valve. The first end of the first four-way valve is connected to the inlet of the battery water pump, the second end of the first four-way valve is connected to the second end of the second four-way valve, the third end of the first four-way valve is connected to the coolant inlet of the battery cooler, and the fourth end of the first four-way valve is connected to the outlet of the motor water pump. The first end of the second four-way valve is connected to the coolant outlet of the battery cooler, the third end of the second four-way valve is connected to the first end of the third four-way valve, and the fourth end of the second four-way valve is connected to the first end of the second three-way valve. The second end of the third four-way valve is connected to the outlet of the power battery, the third end of the third four-way valve is connected to the inlet of the heating water pump, and the fourth end of the third four-way valve is connected to the outlets of the low-temperature radiator and the heater core, respectively. The second end of the second three-way valve is connected to the inlet of the motor radiator, and the third end of the second three-way valve is connected to the inlet of the motor radiator.

[0012] In one possible implementation, the thermal management system further includes a flow channel plate, on which the battery water pump, motor water pump, heating water pump, water-cooled condenser, battery cooler, and connectors are integrated.

[0013] Based on the above technical means, by integrating the battery water pump, motor water pump, heating water pump, water-cooled condenser, battery cooler, and connectors into the flow channel plate, the number of parts such as mounting brackets is reduced, the vehicle cost is lowered, and the vehicle is made lighter.

[0014] In one possible implementation, the thermal management system further includes a water storage tank, the outlet of which is connected to a motor and a motor-driven water pump.

[0015] In one possible implementation, the thermal management system further includes a liquid storage drying bottle, the inlet of which is connected to the refrigerant outlet of the water-cooled cooler, and the outlet of which is connected to the inlet of the evaporator core.

[0016] According to a second aspect of this application, a control method for a thermal management system is provided. The thermal management system includes the thermal management system as described in the first aspect. The control method includes: acquiring the current ambient temperature and determining the operating mode of the thermal management system based on the current ambient temperature to perform thermal management on the power battery, motor, and / or passenger compartment.

[0017] In one possible implementation, the thermal management system includes a first aspect of a thermal management system, which determines the operating mode of the thermal management system based on the current ambient temperature, including: if the current ambient temperature is greater than or equal to a first preset threshold, controlling the thermal management system to enter a first operating mode; if the current ambient temperature is greater than or equal to a second preset threshold and less than the first preset threshold, controlling the thermal management system to enter a second operating mode or a fourth operating mode; and if the current ambient temperature is less than the second preset threshold, controlling the thermal management system to enter a third operating mode or a fourth operating mode.

[0018] In one possible implementation, if the current ambient temperature is greater than or equal to a second preset threshold and less than a first preset threshold, the thermal management system is controlled to enter a second or fourth operating mode, including: if the current ambient temperature is greater than or equal to the second preset threshold, less than the first preset threshold, and the power battery is in cooling mode, the thermal management system is controlled to enter a second operating mode; if the current ambient temperature is greater than or equal to the second preset threshold, less than the first preset threshold, and the power battery is in temperature equalization mode, the thermal management system is controlled to enter a fourth operating mode; if the current ambient temperature is less than the second preset threshold, the thermal management system is controlled to enter a third or fourth operating mode, including: if the current ambient temperature is less than the second preset threshold and the power battery is in heating mode, the thermal management system is controlled to enter a third operating mode; if the current ambient temperature is less than the second preset threshold and the power battery is in temperature equalization mode, the thermal management system is controlled to enter a fourth operating mode.

[0019] In one possible implementation, the control method further includes: controlling the thermal management system to enter a fifth operating mode in response to a maintenance operation.

[0020] According to a third aspect of this application, a vehicle is provided, including a thermal management system as described in the first aspect.

[0021] According to a fourth aspect of this application, a computer-readable storage medium is provided for storing computer-readable instructions that, when executed by a processor, cause the processor to perform the control method as described in the second aspect.

[0022] The thermal management system provided in this application offers the following advantages: By connecting the power battery, motor, compressor, heater core, evaporator core, motor radiator, low-temperature radiator, heater, battery water pump, motor water pump, heating water pump, water-cooled condenser, battery cooler, multi-way valve, and other components via connectors, a high degree of integration is achieved between the battery cooling circuit, motor cooling circuit, and passenger compartment circuit. This reduces the number of assembled parts, thus meeting the lightweight requirements of new energy vehicles. Furthermore, by controlling the flow of coolant and refrigerant through connectors and multi-way valves, both coolant and refrigerant circuits are simultaneously implemented, satisfying the thermal management needs of the power battery, motor, and / or passenger compartment, thus meeting the diverse thermal management requirements across multiple scenarios.

[0023] It should be noted that the technical effects of any of the implementation methods in the second to fourth aspects can be found in the technical effects of the corresponding implementation methods in the first aspect, and will not be repeated here.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0025] Figure 1 This is one of the structural schematic diagrams of a thermal management system provided in an embodiment of this application;

[0026] Figure 2 This is a second schematic diagram of a thermal management system provided in an embodiment of this application;

[0027] Figure 3 This is the third schematic diagram of a thermal management system provided in the embodiments of this application;

[0028] Figure 4 This is one of the structural schematic diagrams of a flow channel plate provided in an embodiment of this application;

[0029] Figure 5 This is a second schematic diagram of the structure of a flow channel plate provided in an embodiment of this application;

[0030] Figure 6 This is a schematic diagram of the structure of the nine-way valve provided in the embodiments of this application;

[0031] Figure 7 A flowchart illustrating a control method for a thermal management system provided in this application embodiment;

[0032] Figure 8 A flowchart for determining the working mode provided in the embodiments of this application. Detailed Implementation

[0033] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0034] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0035] Terminology Explanation

[0036] An electronic expansion valve (EXV) is a programmable throttling control element that operates under electronic regulation. It uses an electrical signal generated by the regulated parameter to control the voltage or current applied to the expansion valve, thereby regulating the fluid supply.

[0037] A positive temperature coefficient (PTC) heater consists of a PTC ceramic heating element and an aluminum tube. This type of PTC heater has the advantages of low thermal resistance and high heat exchange efficiency, and is an automatic temperature-controlled, energy-saving electric heater.

[0038] A brief introduction to the application scenarios involved in this application.

[0039] Compared to traditional gasoline-powered vehicles, new energy vehicles have more loops in their thermal management systems, such as electric drive cooling loops, battery heating loops, and passenger compartment cooling loops. Each loop is an independent system. Therefore, each additional loop increases the number of vehicle components, cost, and weight.

[0040] The increased weight of new energy vehicles leads to increased energy consumption and reduced driving range. Therefore, designing a thermal management system to meet the lightweight requirements of new energy vehicles is a pressing technical problem that needs to be solved.

[0041] In addition, some related technical solutions disclose a thermal management system for electric vehicles, in which a heat pump assembly is integrated with a plate heat exchanger, a water-cooled condenser, an electric water pump, a gas-liquid separator, and an expansion tank. The heat pump assembly has interfaces for connecting to the thermal management object, the front-end module assembly, the temperature, humidity, air cleanliness, and air circulation control system (heating, ventilation, air-conditioning and cooling, HVAC) assembly, and the electric compressor. The thermal management object, the front-end module assembly, the HVAC assembly, and the electric compressor are respectively connected to the heat pump assembly through corresponding interfaces.

[0042] Some technical solutions disclose an electric vehicle thermal management loop system and its control method, in which an integrated module is connected to a compressor, an external heat exchanger, and an air conditioning unit assembly. The integrated module is connected to the in-vehicle evaporator through a first refrigerant interface, to the refrigerant outlet of the in-vehicle condenser through a second refrigerant interface, to the first end of the external heat exchanger through a third refrigerant interface, to the second section of the external heat exchanger through a fourth refrigerant interface, and to the compressor inlet through a fifth refrigerant interface.

[0043] In some technical solutions, the disclosed thermal management integrated module includes a mounting bracket, a heat exchanger, and at least one flow distribution component. Both the heat exchanger and the flow distribution component are mounted on the mounting bracket, which has a flow distribution cavity. The heat exchanger and the flow distribution component are respectively connected to the flow distribution cavity. The flow distribution component is used to distribute the coolant after passing through the heat exchanger.

[0044] It is evident that the thermal management system still suffers from the following technical problems in the relevant technologies:

[0045] 1) Limited functionality: It cannot meet the multi-scenario loop linkage requirements of the vehicle battery, electric drive and passenger compartment, and cannot achieve reasonable energy recovery and utilization.

[0046] 2) Low reliability: There are many connecting pipes, which may lead to leakage and other hidden dangers during long-term use.

[0047] 3) Poor processability: The pipeline layout is complex, occupies a lot of space, and is not easy to disassemble and assemble.

[0048] In response to the above problems, such as Figure 1 As shown, this application provides a thermal management system 100, which includes a power battery 1, a motor 2, a compressor 3, a heater core 4, an evaporator core 5, a motor radiator 6, a low-temperature radiator 7, a heater 8, a battery water pump 9, a motor water pump 10, a heating water pump 11, a water-cooled condenser 12, a battery cooler 13, a multi-way valve 14, and a connector 15.

[0049] Connector 15 is connected to the outlet of power battery 1, the inlet of motor 2, the outlet of heater core 4, the inlet of motor 2 radiator, the outlet of low temperature radiator 7, the inlet of battery water pump 9, the outlet of motor water pump 10, the coolant inlet of water-cooled condenser 12, the cold liquid outlet of battery cooler 13, and the cold liquid inlet of battery cooler 13, respectively.

[0050] The inlet of the electric water pump 10 is connected to the outlet of the electric motor 2, and the inlet of the electric motor 2 is connected to the outlet of the radiator of the electric motor 2.

[0051] The outlet of heater 8 is connected to the inlet of low-temperature radiator 7 and the inlet of warm air core 4 via multi-way valve 14. The inlet of heater 8 is connected to the coolant outlet of water-cooled condenser 12. The outlet of battery water pump 9 is connected to the inlet of power battery 1. The inlet of evaporator core 5 is connected to the refrigerant outlet of water-cooled condenser 12. The refrigerant inlet of water-cooled condenser 12 is connected to the refrigerant outlet of compressor 3. The inlet of compressor 3 is connected to the outlet of evaporator core 5. The refrigerant outlet of battery cooler 13 is connected to the refrigerant inlet of compressor 3. The coolant outlet of heating water pump 11 is connected to the inlet of heater 8.

[0052] In this way, the power battery 1, motor 2, compressor 3, heater core 4, evaporator core 5, motor 2 radiator 6, low temperature radiator 7, heater 8, battery water pump 9, motor water pump 10, heating water pump 11, water-cooled condenser 12, battery cooler 13, multi-way valve 14 and connector 15 are connected through connector 15, realizing a high degree of integration of battery cooling circuit, motor cooling circuit and passenger compartment circuit, reducing assembly parts, thereby meeting the lightweight requirements of new energy vehicles.

[0053] In addition, the flow of coolant and refrigerant is controlled by connector 15 and multi-way valve 14, realizing both coolant circuit and refrigerant circuit, which can meet the thermal management of power battery 1, motor 2 and / or passenger compartment, and meet the needs of multiple thermal management scenarios.

[0054] In some designs, to control the flow of coolant and refrigerant, multi-way valve 14 is a first three-way valve 14, and connector 15 is a nine-way valve 30.

[0055] Specifically, such as Figure 2 As shown, the multi-way valve 14 is the first three-way valve 14, and the connector 15 is the nine-way valve 30.

[0056] The first end 1 of the nine-way valve 30 is connected to the inlet of the motor water pump 10, the second end 2 of the nine-way valve 30 is connected to the inlet of the battery water pump 9, the third end 3 of the nine-way valve 30 is connected to the coolant inlet of the battery cooler 13, the fourth end 4 of the nine-way valve 30 is connected to the coolant outlet of the battery cooler 13, the fifth end 5 of the nine-way valve 30 is connected to the inlet of the radiator of the motor 2, the sixth end 6 of the nine-way valve 30 is connected to the outlet of the low-temperature radiator 7 and the outlet of the warm air core 4, the seventh end 7 of the nine-way valve 30 is connected to the coolant inlet of the water-cooled condenser 12, the eighth end 8 of the nine-way valve 30 is connected to the battery outlet, and the ninth end 9 of the nine-way valve 30 is connected to the inlet of the motor 2.

[0057] The first end 1 of the first three-way valve 14 is connected to the outlet of the heater 8, the second end 2 of the first three-way valve 14 is connected to the inlet of the low-temperature radiator 7, and the third end 3 of the first three-way valve 14 is connected to the inlet of the heater core 4. It can be understood that the flow of coolant and refrigerant is controlled through the first three-way valve 14 and a nine-way valve 30, thereby achieving thermal management of the entire vehicle.

[0058] exist Figure 2 The system also includes a fan 16, a temperature sensor 17, a temperature and pressure sensor 18, a liquid storage and drying bottle 19, an expansion valve 21, and a water storage tank 22.

[0059] Specifically, such as Figure 2 As shown, fan 16 is positioned corresponding to the low-temperature radiator 7 and motor radiator 6. Temperature sensor 17 is installed at the inlet of motor 2 and the inlet of power battery 1. Temperature and pressure sensors 18 are installed at the inlet of compressor 3 and the outlet of evaporator core 5, respectively. The refrigerant outlet of water-cooled condenser 12 is connected to a liquid storage drying bottle 19. Expansion valves 21 are installed at the inlet of evaporator core 5 and the inlet of battery cooler 13. The two ends of water storage tank 22 are connected to motor water pump 10 and motor radiator 6, respectively.

[0060] exist Figure 2 Two motors are shown as an example, but in actual applications there may be more or fewer motors.

[0061] In some embodiments, heater 8 may be a PTC heater.

[0062] In another case, the multi-way valve 14 can be a four-way valve.

[0063] In some designs, the thermal management system 100 has a first operating mode, a second operating mode, a third operating mode, a fourth operating mode, and a fifth operating mode.

[0064] In the first working mode, the first end 1 of the nine-way valve 30 is connected to the fifth end 5 of the nine-way valve 30, the second end 2 of the nine-way valve 30 is connected to the fourth end 4 of the nine-way valve 30, the third end 3 of the nine-way valve 30 is connected to the eighth end 8 of the nine-way valve 30, the sixth end 6 of the nine-way valve 30 is connected to the seventh end 7 of the nine-way valve 30, the ninth end 9 of the nine-way valve 30 is closed, the first end 1 and the second end 2 of the first three-way valve 14 are both open, and the third end 3 of the first three-way valve 14 is closed.

[0065] In the first operating mode, the battery water pump 9 starts, and the coolant flows through the power battery 1 under the action of the battery water pump 9, then through the eighth end 8 and the third end 3 of the nine-way valve 30, to the battery cooler 13. Further, the coolant exchanges heat with the refrigerant flowing through the battery cooler 13. Subsequently, the cooled coolant flows back to the battery water pump 9 through the fourth end 4 and the second end 2 of the nine-way valve 30.

[0066] In the first working mode, the motor water pump 10 starts, and the coolant flows through the first end 1 and the fifth end 5 of the nine-way valve 30 to the radiator of the motor 2 under the action of the motor water pump 10. The coolant exchanges heat with the outside air in the radiator of the motor 2. The cooled coolant then enters the motor 2 to cool the motor 2 and flows back to the motor water pump 10.

[0067] In the first working mode, the heating water pump 11 starts, and the coolant flows through the first three-way valve into the low-temperature radiator 7 under the action of the heating water pump 11 to exchange heat with the outside air. The cooled coolant flows through the sixth end 6 and the seventh end 7 of the nine-way valve 30 to the water-cooled condenser 12 to exchange heat with the refrigerant flowing through the water-cooled condenser 12. The heated coolant enters the low-temperature radiator 7 again through the heating water pump 11.

[0068] In the first operating mode, compressor 3 starts, and the refrigerant enters the water-cooled condenser 12 under the action of compressor 3 to exchange heat with the coolant flowing through the water-cooled condenser 12. The cooled refrigerant then enters the evaporator core 5 and the battery cooler 13. In the evaporator core 5, the cooled refrigerant exchanges heat with the hot air in the passenger compartment to achieve passenger compartment cooling. In the battery cooler 13, the cooled refrigerant exchanges heat with the coolant flowing through the battery cooler 13 to achieve battery cooling. The refrigerant flowing through the evaporator core 5 and the battery cooler 13 then enters the water-cooled condenser 12 through compressor 3.

[0069] In the second working mode, the first end 1 of the nine-way valve 30 is connected to the third end 3 of the nine-way valve 30, the second end 2 of the nine-way valve 30 is connected to the fourth end 4 of the nine-way valve 30, the fifth end 5 of the nine-way valve 30 is connected to the eighth end 8 of the nine-way valve 30, the sixth end 6 of the nine-way valve 30 is connected to the seventh end 7 of the nine-way valve 30, the ninth end 9 of the nine-way valve 30 is open, and the first end 1, the second end 2, and the third end 3 of the first three-way valve 14 are all open.

[0070] In some embodiments, the opening ratio of the ninth end 9 of the nine-way valve 30 is located within a first preset range.

[0071] For example, the first preset range is 30%-50%.

[0072] For example, the ninth stage opening ratio of the nine-way valve 30 is 36%.

[0073] In the second operating mode, both the battery water pump 9 and the motor water pump 10 are activated. Under the action of the battery water pump 9, the coolant flows through the power battery 1, then through the eighth end 8 and the fifth end 5 of the nine-way valve 30, and then through the radiator of the motor 2 to exchange heat with the outside air. After cooling, the coolant then enters the motor water pump 10 through the motor 2. After being pumped by the motor water pump 10, the coolant flows through the first end 1 and the third end 3 of the nine-way valve 30 to the battery cooler 13. In the battery cooler 13, it exchanges heat with the refrigerant flowing through it, and then, under the action of the battery water pump 9, enters the power battery 1.

[0074] In the second operating mode, the channel from the first three-way valve to the low-temperature radiator 7 and the channel from the first three-way valve to the heater core 4 are opened. The heating water pump 11 starts, and the coolant flows through the first three-way valve into the low-temperature radiator 7 and the heater core 4 under the action of the heating water pump 11. The coolant exchanges heat with the outside air in the low-temperature radiator 7 and with the cabin air in the heater core 4, thus heating the cabin. The cooled coolant flows through the sixth end 6 and the seventh end 7 of the nine-way valve 30 and exchanges heat with the refrigerant flowing through the water-cooled condenser 12. The heated coolant then re-enters the low-temperature radiator 7 through the heating water pump 11.

[0075] In the second operating mode, compressor 3 starts, and refrigerant enters water-cooled condenser 12 under the action of compressor 3 to exchange heat with the coolant flowing through water-cooled condenser 12. The cooled refrigerant enters evaporator core 5 and battery cooler 13. In evaporator core 5, the cooled refrigerant exchanges heat with the hot air in the passenger compartment to achieve passenger compartment cooling. In battery cooler 13, the cooled refrigerant exchanges heat with the coolant flowing through the battery circuit of battery cooler 13 to achieve battery cooling. The refrigerant flowing through evaporator core 5 and battery cooler 13 then enters water-cooled condenser 12 through compressor 3.

[0076] In some embodiments, the cooled refrigerant enters a liquid storage drying bottle for drying, and then enters the evaporator core 5 and the battery cooler 13 after being throttled and cooled by a throttling device.

[0077] For example, the throttling device is an expansion valve.

[0078] In the third working mode, the first end 1 of the nine-way valve 30 is connected to the third end 3 of the nine-way valve 30, the second end 2 of the nine-way valve 30 is connected to the sixth end 6 of the nine-way valve 30, the fourth end 4 of the nine-way valve 30 is connected to the ninth end 9 of the nine-way valve 30, the eighth end 8 of the nine-way valve 30 is connected to the seventh end 7 of the nine-way valve 30, the fifth end 5 of the nine-way valve 30 is closed, the first end 1 and the third end 3 of the first three-way valve 14 are both open, and the second end 2 of the first three-way valve 14 is closed.

[0079] In the third operating mode, the channel from the first three-way valve to the low-temperature radiator 7 is closed, and the channel from the first three-way valve to the heater core 4 is open. Both the battery water pump 9 and the heating water pump 11 are started. The coolant flows through the power battery 1 under the action of the battery water pump 9, and then flows through the water-cooled condenser 12 through the eighth end 8 and the seventh end 7 of the nine-way valve 30. In the water-cooled condenser 12, it exchanges heat with the refrigerant flowing through the water-cooled condenser 12. The heated coolant then enters the heater 8 through the heating water pump 11. The coolant is further heated in the heater 8. After further heating, the coolant enters the heater core 4 through the first three-way valve. In the heater core 4, the coolant exchanges heat with the air in the passenger compartment. After cooling, the coolant then enters the power battery 1 through the battery water pump 9.

[0080] In the third working mode, the motor water pump 10 starts, and the coolant flows through the first end 1 and the third end 3 of the nine-way valve 30 to the battery cooler 13 under the action of the motor water pump 10. The coolant exchanges heat with the refrigerant flowing through the battery cooler 13. After cooling, the coolant flows through the motor 2 and then enters the motor water pump 10.

[0081] In the third working mode, the compressor 3 starts, and the refrigerant enters the water-cooled condenser 12 under the action of the compressor 3 to exchange heat with the coolant flowing through the water-cooled condenser 12. The cooled refrigerant enters the battery cooler 13. In the battery cooler 13, the cooled refrigerant exchanges heat with the coolant flowing through the battery cooler 13 to cool the battery. The refrigerant flowing through the battery cooler 13 then enters the water-cooled condenser 12 through the compressor 3.

[0082] In some embodiments, the cooled refrigerant enters a liquid storage drying bottle for drying, and then enters the battery cooler 13 after being throttled and cooled by a throttling device.

[0083] In the fourth operating mode, the first end 1 of the nine-way valve 30 is connected to the third end 3 of the nine-way valve 30, the second end 2 of the nine-way valve 30 is connected to the eighth end 8 of the nine-way valve 30, the fifth end 5 of the nine-way valve 30 is connected to the fourth end 4 of the nine-way valve 30, the sixth end 6 of the nine-way valve 30 is connected to the seventh end 7 of the nine-way valve 30, the ninth end 9 of the nine-way valve 30 is open, and the first end 1, the second end 2, and the third end 3 of the first three-way valve 14 are all open.

[0084] In some embodiments, the opening ratio of the ninth end 9 of the nine-way valve 30 is located in a second preset range.

[0085] For example, the second preset range is 30%-50%.

[0086] For example, the ninth stage opening ratio of the nine-way valve 30 is 36%.

[0087] In the fourth working mode, the battery water pump 9 starts, and the coolant flows through the power battery 1 under the action of the battery water pump 9 and then enters the battery water pump 9 through the nine-way valve 30.

[0088] In the fourth operating mode, the motor water pump 10 starts, and the coolant flows through the first end 1 and the third end 3 of the nine-way valve 30 into the battery cooler 13 under the action of the motor water pump 10. The coolant exchanges heat with the refrigerant flowing through the battery cooler 13. The cooled coolant then enters the motor 2 radiator through the fourth end 4 and the fifth end 5 of the nine-way valve 30, where it exchanges heat with the ambient air. The further cooled coolant then enters the motor 2. The flow rate of the coolant flowing through the motor 2 radiator can be adjusted according to actual conditions.

[0089] In the fourth operating mode, the heating water pump 11 starts, the three-way valve to the low-temperature radiator 7 channel opens, and the three-way valve to the heater core 4 channel opens. Under the action of the heating water pump 11, the coolant enters the low-temperature radiator 7 and the heater core 4 through the three-way valve respectively. The coolant enters the low-temperature radiator 7 to exchange heat with the outside air, and the coolant enters the heater core 4 to exchange heat with the air in the passenger compartment. After cooling, the coolant flows through the sixth end 6 and the seventh end 7 of the nine-way valve 30 and then flows through the water-cooled condenser 12 to exchange heat with the refrigerant flowing through the water-cooled condenser 12. The heated coolant then enters the heating water pump 11 again.

[0090] In the fourth operating mode, compressor 3 starts, and the refrigerant enters the water-cooled condenser 12 under the action of compressor 3 to exchange heat with the coolant flowing through the water-cooled condenser 12. The cooled refrigerant enters the evaporator core 5 and the battery cooler 13. In the evaporator core 5, the cooled refrigerant absorbs water vapor in the surrounding air to dry it, realizing the dehumidification function of the crew cabin. In the battery cooler 13, the cooled refrigerant exchanges heat with the coolant flowing through the battery circuit of the battery cooler 13 to cool the battery. The refrigerant flowing through the evaporator core 5 and the battery cooler 13 then enters the water-cooled condenser 12 through compressor 3.

[0091] In some implementations, the cooled refrigerant enters the liquid storage drying bottle for drying, and then enters the evaporator core 5 and the battery cooler 13 after being throttled and cooled by the throttling device.

[0092] In the fifth operating mode, the first end 1 of the nine-way valve 30 is connected to the second end 2 of the nine-way valve 30, the fourth end 4 of the nine-way valve 30 is connected to the seventh end 7 of the nine-way valve 30, the fifth end 5 of the nine-way valve 30 is connected to the sixth end 6 of the nine-way valve 30, and the third end 3 of the nine-way valve 30 is connected to the eighth end 8 of the nine-way valve 30. The fifth end 5 of the nine-way valve 30 is closed, and the first end 1, the second end 2, and the third end 3 of the first three-way valve 14 are all open.

[0093] In the fifth working mode, the power battery 1, motor 2, heater core 4, motor 2 radiator, low temperature radiator 7, three-way valve, battery water pump 9, motor water pump 10, heating water pump 11, water-cooled condenser 12, battery cooler 13, nine-way valve 30, and heater 8 are connected in series through water pipes, and the battery water pump 9, motor water pump 10 and heating water pump 11 are started.

[0094] Understandably, in order to meet the different thermal management needs of vehicles, the thermal management system 100 in this application embodiment has five working modes: a first working mode, a second working mode, a third working mode, a fourth working mode, and a fifth working mode, so as to meet the thermal management needs of vehicles in different scenarios.

[0095] In one design, to control the flow of coolant and refrigerant. For example... Figure 3 As shown, the multi-way valve 14 is a first three-way valve, and the connector 15 includes a first four-way valve 40, a second four-way valve 41, a third four-way valve 42, and a second three-way valve 43.

[0096] The first end 1 of the first four-way valve 40 is connected to the inlet of the battery water pump 9, the second end 2 of the first four-way valve 40 is connected to the second end 2 of the second four-way valve 41, the third end 3 of the first four-way valve 40 is connected to the coolant inlet of the battery cooler 13, and the fourth end 4 of the first four-way valve 40 is connected to the outlet of the motor water pump 10.

[0097] The first end 1 of the second four-way valve 41 is connected to the coolant outlet of the battery cooler 13, the third end 3 of the second four-way valve 41 is connected to the first end 1 of the third four-way valve 42, and the fourth end 4 of the second four-way valve 41 is connected to the first end 1 of the second three-way valve 43.

[0098] The second end 2 of the third four-way valve 42 is connected to the outlet of the power battery 1, the third end 3 of the third four-way valve 42 is connected to the inlet of the heating water pump 11, and the fourth end 4 of the third four-way valve 42 is connected to the outlets of the low-temperature radiator 7 and the warm air core 4 respectively.

[0099] The outlet of compressor 3 is connected to the inlet of water-cooled condenser 12. The outlet of water-cooled condenser 12 is connected to the inlet of evaporator core 5 and the refrigerant inlet of battery cooler 13. The outlet of evaporator core 5 is connected to compressor 3. The refrigerant outlet of battery cooler 13 is connected to the inlet of compressor 3.

[0100] exist Figure 3 The system also includes a fan 16, a temperature sensor 17, a temperature and pressure sensor 18, a liquid storage and drying bottle 19, an expansion valve 21, and a water storage tank 22.

[0101] Specifically, such as Figure 3 As shown, fan 16 is positioned corresponding to the low-temperature radiator 7 and motor radiator 6. Temperature sensor 17 is installed at the inlet of motor 2 and the inlet of power battery 1. Temperature and pressure sensors 18 are installed at the inlet of compressor 3 and the outlet of evaporator core 5, respectively. The refrigerant outlet of water-cooled condenser 12 is connected to a liquid storage drying bottle 19. Expansion valves 21 are installed at the inlet of evaporator core 5 and the inlet of battery cooler 13. The two ends of water storage tank 22 are connected to motor water pump 10 and motor radiator 6, respectively.

[0102] exist Figure 2 Two motors are shown as an example, but in actual applications there may be more or fewer motors.

[0103] The second end 2 of the second three-way valve 43 is connected to the inlet of the radiator of the motor 2, and the third end 3 of the second three-way valve 43 is connected to the inlet of the radiator of the motor 2.

[0104] When the multi-way valve 14 is a first three-way valve and the connector 15 includes a first four-way valve 40, a second four-way valve 41, a third four-way valve 42 and a second three-way valve 43, the thermal management system 100 has a sixth operating mode, a seventh operating mode, an eighth operating mode, a ninth operating mode and a tenth operating mode.

[0105] In the sixth operating mode, both the first end 1 and the second end 2 of the first three-way valve 14 are open, and the third end 3 of the first three-way valve 14 is closed. The first end 1 of the first four-way valve 40 is connected to the third end 3 of the first four-way valve 40, and the second end 2 of the first four-way valve 40 is connected to the fourth end 4 of the first four-way valve 40. The first end 1 of the second four-way valve 41 is connected to the third end 3 of the second four-way valve 41, and the first end 1 of the second four-way valve 41 is connected to the third end 3 of the second four-way valve 41. The first end 1 of the third four-way valve 42 is connected to the second end 2 of the first four-way valve 40, and the third end 3 of the third four-way valve 42 is connected to the fourth end 4 of the third four-way valve 42.

[0106] In the sixth operating mode, the battery water pump 9 starts, and the coolant flows through the power battery 1 under the action of the battery water pump 9, then through the second end 2 of the third four-way valve 42, the third end 3 of the second four-way valve 41, and the first end 1 of the second four-way valve 41, to the battery cooler 13. Further, the coolant exchanges heat with the refrigerant flowing through the battery cooler 13. Subsequently, the cooled coolant flows back to the battery water pump 9 through the third end 3 and the first end 1 of the first four-way valve 40.

[0107] In the sixth working mode, the motor water pump 10 starts, and the coolant flows through the fourth end 4 of the first four-way valve 40, the second end 2 of the first four-way valve 40, the second end 2 of the second four-way valve 41, the fourth end 4 of the second four-way valve 41, the first end 1 of the second three-way valve 43, and the third end 3 of the second three-way valve 43, passing through the radiator of the motor 2. The coolant exchanges heat with the outside air in the radiator of the motor 2, and the cooled coolant then enters the motor 2 to cool the motor 2, and then flows back to the motor water pump 10.

[0108] In the sixth operating mode, the heating water pump 11 starts, and the coolant, under the action of the heating water pump 11, flows through the first three-way valve into the low-temperature radiator 7 to exchange heat with the outside air. The cooled coolant then flows through the fourth end 4 and the third end 3 of the third four-way valve 42 back to the heating water pump 11. Subsequently, the coolant re-enters the low-temperature radiator 7 through the heating water pump 11.

[0109] In the sixth operating mode, compressor 3 starts, and the refrigerant enters the water-cooled condenser 12 under the action of compressor 3 to exchange heat with the coolant flowing through the water-cooled condenser 12. The cooled refrigerant then enters the evaporator core 5 and the battery cooler 13. In the evaporator core 5, the cooled refrigerant exchanges heat with the hot air in the passenger compartment to achieve passenger compartment cooling. In the battery cooler 13, the cooled refrigerant exchanges heat with the coolant flowing through the battery cooler 13 to achieve battery cooling. The refrigerant flowing through the evaporator core 5 and the battery cooler 13 then enters the water-cooled condenser 12 through compressor 3.

[0110] In the seventh operating mode, the first end 1, the second end 2, and the third end 3 of the first three-way valve 14 are all open.

[0111] In the seventh operating mode, both the battery water pump 9 and the motor water pump 10 are started. Under the action of the battery water pump 9, the coolant flows through the power battery 1 and then through the second end 2 of the third four-way valve 42, the first end 1 of the third four-way valve 42, the third end 3 of the second four-way valve 41, the fourth end 4 of the second four-way valve 41, the first end 1 of the second three-way valve 43, and the third end 3 of the second three-way valve 43. It then flows through the radiator of the motor 2 to exchange heat with the outside air. After cooling, the coolant then enters the motor water pump 10 through the motor 2. After being acted upon by the motor water pump 10, the coolant flows through the fourth end 4 and the third end 3 of the first four-way valve 40 to the battery cooler 13. In the battery cooler 13, it exchanges heat with the refrigerant flowing through it and then flows through the first end 1 and the second end 2 of the second four-way valve 41 to the battery water pump 9.

[0112] In the seventh operating mode, the channel from the first three-way valve to the low-temperature radiator 7 and the channel from the first three-way valve to the heater core 4 are opened. The heating water pump 11 starts, and the coolant flows through the first three-way valve into the low-temperature radiator 7 and the heater core 4 under the action of the heating water pump 11. The coolant exchanges heat with the outside air in the low-temperature radiator 7 and with the cabin air in the heater core 4, thereby heating the cabin. The cooled coolant then flows through the fourth end 4 and the third end 3 of the third four-way valve 42 to the heating water pump 11.

[0113] In the seventh operating mode, compressor 3 starts, and the refrigerant enters the water-cooled condenser 12 under the action of compressor 3 to exchange heat with the coolant flowing through the water-cooled condenser 12. The cooled refrigerant then enters the evaporator core 5 and the battery cooler 13. In the evaporator core 5, the cooled refrigerant exchanges heat with the hot air in the passenger compartment to achieve passenger compartment cooling. In the battery cooler 13, the cooled refrigerant exchanges heat with the coolant flowing through the battery cooler 13 to achieve battery cooling. The refrigerant flowing through the evaporator core 5 and the battery cooler 13 then enters the water-cooled condenser 12 through compressor 3.

[0114] In the eighth operating mode, both the first end 1 and the third end 3 of the first three-way valve 14 are open, and the second end 2 of the first three-way valve 14 is closed.

[0115] In the eighth operating mode, the channel from the first three-way valve to the low-temperature radiator 7 is closed, and the channel from the first three-way valve to the heater core 4 is open. Both the battery water pump 9 and the heating water pump 11 are started. The coolant flows through the power battery 1 under the action of the battery water pump 9 and then through the water-cooled condenser 12. In the water-cooled condenser 12, it exchanges heat with the refrigerant flowing through the water-cooled condenser 12. The heated coolant then enters the heater 8 through the heating water pump 11. In the heater 8, the coolant is further heated. After further heating, the coolant enters the heater core 4 through the first three-way valve. In the heater core 4, the coolant exchanges heat with the air in the passenger compartment. After cooling, the coolant then enters the power battery 1 through the battery water pump 9.

[0116] In the eighth working mode, the motor water pump 10 starts, and the coolant flows through the battery cooler 13 under the action of the motor water pump 10. The coolant exchanges heat with the refrigerant flowing through the battery cooler 13. After cooling, the coolant flows through the motor 2 and then enters the motor water pump 10.

[0117] In the eighth working mode, the compressor 3 starts, and the refrigerant enters the water-cooled condenser 12 under the action of the compressor 3 to exchange heat with the coolant flowing through the water-cooled condenser 12. The cooled refrigerant enters the battery cooler 13. In the battery cooler 13, the cooled refrigerant exchanges heat with the coolant flowing through the battery cooler 13 to achieve battery cooling. The refrigerant flowing through the battery cooler 13 then enters the water-cooled condenser 12 through the compressor 3.

[0118] In some embodiments, the cooled refrigerant enters a liquid storage drying bottle for drying, and then enters the battery cooler 13 after being throttled and cooled by a throttling device.

[0119] In the ninth operating mode, the first end 1, the second end 2, and the third end 3 of the first three-way valve 14 are all open.

[0120] In the ninth operating mode, the battery water pump 9 starts, and the coolant flows through the power battery 1 into the battery water pump 9 under the action of the battery water pump 9.

[0121] In the ninth operating mode, the motor water pump 10 starts, and the coolant flows through the battery cooler 13 under the action of the motor water pump 10. The coolant exchanges heat with the refrigerant flowing through the battery cooler 13, and the cooled coolant enters the motor 2 radiator, where it exchanges heat with the ambient air. The further cooled coolant then enters the motor 2. The flow rate of the coolant flowing through the motor 2 radiator can be adjusted according to actual needs.

[0122] In the ninth operating mode, the heating water pump 11 starts, the first three-way valve to the low-temperature radiator 7 channel opens, and the three-way valve to the heater core 4 channel opens. Under the action of the heating water pump 11, the coolant enters the low-temperature radiator 7 and the heater core 4 through the first three-way valve respectively. The coolant enters the low-temperature radiator 7 to exchange heat with the outside air, and the coolant enters the heater core 4 to exchange heat with the air in the passenger compartment. The cooled coolant flows through the water-cooled condenser 12 to exchange heat with the refrigerant flowing through the water-cooled condenser 12. The heated coolant then enters the heating water pump 11 again.

[0123] In the ninth operating mode, compressor 3 starts, and the refrigerant enters the water-cooled condenser 12 under the action of compressor 3 to exchange heat with the coolant flowing through the water-cooled condenser 12. The cooled refrigerant enters the evaporator core 5 and the battery cooler 13. In the evaporator core 5, the cooled refrigerant absorbs water vapor in the surrounding air to dry it, realizing the dehumidification function of the crew cabin. In the battery cooler 13, the cooled refrigerant exchanges heat with the coolant flowing through the battery circuit of the battery cooler 13 to cool the battery. The refrigerant flowing through the evaporator core 5 and the battery cooler 13 then enters the water-cooled condenser 12 through compressor 3.

[0124] In the tenth operating mode, the first end 1, the second end 2, and the third end 3 of the first three-way valve 14 are all open.

[0125] In the tenth working mode, the power battery 1, motor 2, heater core 4, motor 2 radiator, low temperature radiator 7, three-way valve, battery water pump 9, electric drive water pump, heating water pump 11, water-cooled condenser 12, battery cooler 13, nine-way valve 30, and heater 8 are connected in series through water pipes, and the battery water pump 9, motor water pump 10 and heating water pump 11 are started.

[0126] Understandably, in order to meet the different thermal management needs of vehicles, the thermal management system 100 in this embodiment of the application adopts a first four-way valve 40, a second four-way valve 41, a third four-way valve 42 and a second three-way valve 43 to realize a sixth working mode, a seventh working mode, an eighth working mode, a ninth working mode and a tenth working mode, thereby meeting the thermal management needs of vehicles in different scenarios.

[0127] In one design, to meet the requirements of vehicle lightweighting, the thermal management system 100 in this embodiment of the application further includes a flow channel plate, and the battery water pump 9, motor water pump 10, heating water pump 11, water-cooled condenser 12, battery cooler 13 and connector 15 are integrated on the flow channel plate.

[0128] In some embodiments, connector 15 is the aforementioned nine-way valve 30. The connection relationship between battery water pump 9, motor water pump 10, heating water pump 11, water-cooled condenser 12, battery cooler 13, and nine-way valve 30 is as described above.

[0129] In some embodiments, connector 15 includes the first four-way valve 40, the second four-way valve 41, the third four-way valve 42, and the second three-way valve 43 described above. The connection relationships of battery water pump 9, motor water pump 10, heating water pump 11, water-cooled condenser 12, battery cooler 13, first four-way valve 40, second four-way valve 41, third four-way valve 42, and second three-way valve 43 are as described above.

[0130] For example, such as Figure 4 As shown, the flow channel plate 20-1 contains multiple flow channels 20-1-1. The size of each flow channel is within a preset range. For example, the flow channel width is 20-30 mm, the height is 8-20 mm, and the flow channel wall thickness is 3-5 mm.

[0131] For example, such as Figure 4 As shown, the runner plate 20-1 comprises an upper runner plate 20-1-2, a middle runner plate 20-1-3, and a lower runner plate 20-1-4. The runner plate 20-1 is made of plastic material, containing more than 50% of at least one material selected from polyamide (PA), polyphenylene sulfide (PPS), and polypropylene (PP). The runner plate 20-1 is first manufactured using a one-piece thermoforming process, and then the upper runner plate 20-1, middle runner plate 20-1, and lower runner plate 20-1 are welded together using a hot-melt welding process.

[0132] The flow channel plate 20-1 also includes multiple water pipe joints.

[0133] For example, such as Figure 5As shown, the flow channel plate 20-1 includes eight water pipe connectors: the first water pipe connector 20-1-5, the second water pipe connector 20-1-6, the third water pipe connector 20-1-7, the fourth water pipe connector 20-1-8, the fifth water pipe connector 20-1-9, the sixth water pipe connector 20-1-10, the seventh water pipe connector 20-1-11, and the eighth water pipe connector 20-1-12. The first water pipe connector 20-1-5 connects to the outlet of the water tank; the second water pipe connector 20-1-6 connects to the outlet of motor 2; the third water pipe connector 20-1-7 connects to the outlet of the radiator of motor 2; the fourth water pipe connector 20-1-8 connects to the inlet of heater 8; the fifth water pipe connector 20-1-9 connects to the outlet of low-temperature radiator 7; the sixth water pipe connector 20-1-10 connects to the outlet of power battery 1; the seventh water pipe connector 20-1-11 connects to the inlet of power battery 1; and the eighth water pipe connector 20-1-12 connects to the inlet of the radiator of motor 2.

[0134] In some embodiments, the water pipe fitting can be made of plastic or metal. If the water pipe fitting is made of plastic, it contains more than a predetermined percentage (e.g., 50%) of PP material. The water pipe fitting is injection molded and has a quick-connect structure, with dimensions such as VDA-NW16. The water pipe fitting is welded to the flow channel plate 20-1 using a thermoforming welding process. Figure 5 As shown, the flow channel plate 20-1 also includes mounting point 20-10, and the mounting point (20-10) is designed with vibration damping structure 20-10-1.

[0135] For example, the outer diameter of the shock-absorbing structure can be 25mm and the height can be 22mm; the outer diameter can be 26mm and the height can be 23mm. This application does not specifically limit these dimensions.

[0136] exist Figure 5 The example also includes an integrated water-cooled condenser 12, a battery cooler 13, a heating water pump 11, a battery water pump 9, a motor water pump 10, and a nine-way valve 30.

[0137] For example, such as Figure 6 As shown, the nine-way valve 30 includes a first end 1, a second end 2, a third end 3, a fourth end 4, a fifth end 5, a sixth end 6, a seventh end 7, an eighth end 8, and a ninth end 9.

[0138] When the flow channel plate 20-1 includes multiple water pipe joints, the connection relationships between the components in the thermal management system 100—battery water pump 9, motor water pump 10, heating water pump 11, water-cooled condenser 12, battery cooler 13, nine-way valve 30, and flow channel plate 20-1—are as follows:

[0139] The refrigerant inlet of the water-cooled condenser 12 is connected to the outlet of the compressor 3, and the refrigerant outlet of the water-cooled condenser 12 is connected to the inlet of the liquid receiver dryer. The coolant outlet of the water-cooled condenser 12 is connected to the inlet of the heater 8, and the coolant outlet of the water-cooled condenser 12 is connected to the inlet of the heating water pump 11.

[0140] The refrigerant outlet of the battery cooler 13 is connected to the inlet of the compressor 3, and the refrigerant inlet of the battery cooler 13 is connected to the outlet of the liquid receiver / drier bottle. The coolant inlet of the battery cooler 13 is connected to the third terminal 3 of the nine-way valve 30, and the coolant outlet of the battery cooler 13 is connected to the fourth terminal 4 of the nine-way valve 30.

[0141] The battery-powered water pump 9, the motor-driven water pump 10, and the heating water pump 11 are all bolted to the flow channel plate 20-1, with either radial or end-face sealing methods. The outlet of the heating water pump 11 is connected to the inlet of the heater 8, and the coolant inlet of the water-cooled condenser 12 is connected to the seventh end 7 of the nine-way valve 30 through the internal channel of the flow channel plate 20-1. The outlet of the battery-powered water pump 9 is connected to the coolant inlet of the power battery 1, and the inlet of the battery-powered water pump 9 is connected to the second end 2 of the nine-way valve 30 through the internal channel of the flow channel plate 20-1. The inlet of the motor-driven water pump 10 is connected to the coolant outlet of the motor 2, and the outlet of the motor-driven water pump 10 is connected to the first end 1 of the nine-way valve 30 through the internal channel of the flow channel plate 20-1.

[0142] The first end 1 to the ninth end 9 of the nine-way valve 30 are respectively connected to the internal flow channels of the flow channel plate 20-1. The fifth end 5 and the ninth end 9 of the nine-way valve 30 share a single valve. The valve opening ratio can be adjusted within the range of 0-100%. The outlet of the power battery 1 is connected to the eighth end 8 of the nine-way valve 30 through the internal channel of the flow channel plate 20-1; the outlet of the heater core 4 is connected to the sixth end 6 of the nine-way valve 30 through the internal channel of the flow channel plate 20-1; and the outlet of the low-temperature radiator 7 is connected to the sixth end 6 of the nine-way valve 30 through the internal channel of the flow channel plate 20-1. The inlet of the motor 2 is connected to the ninth end 9 of the nine-way valve 30 through the internal channel of the flow channel plate 20-1; and the inlet of the motor 2 radiator is connected to the fifth end 5 of the nine-way valve 30 through the internal channel of the flow channel plate 20-1.

[0143] In the first working mode, the first end 1 of the nine-way valve 30 is connected to the fifth end 5 of the nine-way valve 30, the second end 2 of the nine-way valve 30 is connected to the fourth end 4 of the nine-way valve 30, the third end 3 of the nine-way valve 30 is connected to the eighth end 8 of the nine-way valve 30, the sixth end 6 of the nine-way valve 30 is connected to the seventh end 7 of the nine-way valve 30, the ninth end 9 of the nine-way valve 30 is closed, the first end 1 and the second end 2 of the three-way valve are both open, and the third end 3 of the three-way valve is closed.

[0144] The second water pipe joint 20-1-6 and the eighth water pipe joint 20-1-12 of the flow channel plate 20-1 are connected through the internal flow channel, the fourth water pipe joint 20-1-8 and the fifth water pipe joint 20-1-9 are connected through the internal flow channel, and the sixth water pipe joint 20-1-10 and the seventh water pipe joint 20-1-11 are connected through the internal flow channel.

[0145] In the first operating mode, the battery water pump 9 starts, and the coolant flows through the power battery 1 under the action of the battery water pump 9, then through the eighth end 8 and the third end 3 of the nine-way valve 30, to the battery cooler 13. Further, the coolant exchanges heat with the refrigerant flowing through the battery cooler 13. Subsequently, the cooled coolant flows back to the battery water pump 9 through the fourth end 4 and the second end 2 of the nine-way valve 30.

[0146] In the first working mode, the motor water pump 10 starts, and the coolant flows through the first end 1 and the fifth end 5 of the nine-way valve 30 to the radiator of the motor 2 under the action of the motor water pump 10. The coolant exchanges heat with the outside air in the radiator of the motor 2. The cooled coolant then enters the motor 2 to cool the motor 2 and flows back to the motor water pump 10.

[0147] In the first working mode, the heating water pump 11 starts, and the coolant flows through the first three-way valve into the low-temperature radiator 7 under the action of the heating water pump 11 to exchange heat with the outside air. The cooled coolant flows through the sixth end 6 and the seventh end 7 of the nine-way valve 30 to the water-cooled condenser 12 to exchange heat with the refrigerant flowing through the water-cooled condenser 12. The heated coolant enters the low-temperature radiator 7 again through the heating water pump 11.

[0148] In the first operating mode, compressor 3 starts, and the refrigerant enters the water-cooled condenser 12 under the action of compressor 3 to exchange heat with the coolant flowing through the water-cooled condenser 12. The cooled refrigerant then enters the evaporator core 5 and the battery cooler 13. In the evaporator core 5, the cooled refrigerant exchanges heat with the hot air in the passenger compartment to achieve passenger compartment cooling. In the battery cooler 13, the cooled refrigerant exchanges heat with the coolant flowing through the battery cooler 13 to achieve battery cooling. The refrigerant flowing through the evaporator core 5 and the battery cooler 13 then enters the water-cooled condenser 12 through compressor 3.

[0149] In the second working mode, the first end 1 of the nine-way valve 30 is connected to the third end 3 of the nine-way valve 30, the second end 2 of the nine-way valve 30 is connected to the fourth end 4 of the nine-way valve 30, the fifth end 5 of the nine-way valve 30 is connected to the eighth end 8 of the nine-way valve 30, the sixth end 6 of the nine-way valve 30 is connected to the seventh end 7 of the nine-way valve 30, the ninth end 9 of the nine-way valve 30 is open, and the first end 1, the second end 2, and the third end 3 of the first three-way valve are all open.

[0150] In some embodiments, the opening ratio of the ninth end 9 of the nine-way valve 30 is located within a first preset range.

[0151] For example, the first preset range is 30%-50%.

[0152] For example, the ninth stage opening ratio of the nine-way valve 30 is 36%.

[0153] The second water pipe joint 20-1-6 and the sixth water pipe joint 20-1-10 of the flow channel plate 20-1 are connected through the internal flow channel, the fourth water pipe joint 20-1-8 and the fifth water pipe joint 20-1-9 are connected through the internal flow channel, and the seventh water pipe joint 20-1-11 and the seventh water pipe joint 20-1-11 are connected through the internal flow channel.

[0154] In the second operating mode, both the battery water pump 9 and the motor water pump 10 are activated. Under the action of the battery water pump 9, the coolant flows through the power battery 1, then through the eighth end 8 and the fifth end 5 of the nine-way valve 30, and then through the radiator of the motor 2 to exchange heat with the outside air. After cooling, the coolant then enters the motor water pump 10 through the motor 2. After being pumped by the motor water pump 10, the coolant flows through the first end 1 and the third end 3 of the nine-way valve 30 to the battery cooler 13. In the battery cooler 13, it exchanges heat with the refrigerant flowing through it, and then, under the action of the battery water pump 9, enters the power battery 1.

[0155] In the second operating mode, the channel from the first three-way valve to the low-temperature radiator 7 and the channel from the first three-way valve to the heater core 4 are opened. The heating water pump 11 starts, and the coolant flows through the first three-way valve into the low-temperature radiator 7 and the heater core 4 under the action of the heating water pump 11. The coolant exchanges heat with the outside air in the low-temperature radiator 7 and with the cabin air in the heater core 4, thus heating the cabin. The cooled coolant flows through the sixth end 6 and the seventh end 7 of the nine-way valve 30 and exchanges heat with the refrigerant flowing through the water-cooled condenser 12. The heated coolant then re-enters the low-temperature radiator 7 through the heating water pump 11.

[0156] In the second operating mode, compressor 3 starts, and refrigerant enters water-cooled condenser 12 under the action of compressor 3 to exchange heat with the coolant flowing through water-cooled condenser 12. The cooled refrigerant enters evaporator core 5 and battery cooler 13. In evaporator core 5, the cooled refrigerant exchanges heat with the hot air in the passenger compartment to achieve passenger compartment cooling. In battery cooler 13, the cooled refrigerant exchanges heat with the coolant flowing through the battery circuit of battery cooler 13 to achieve battery cooling. The refrigerant flowing through evaporator core 5 and battery cooler 13 then enters water-cooled condenser 12 through compressor 3.

[0157] In some embodiments, the cooled refrigerant enters a liquid storage drying bottle for drying, and then enters the evaporator core 5 and the battery cooler 13 after being throttled and cooled by a throttling device.

[0158] For example, the throttling device is an expansion valve.

[0159] In the third working mode, the first end 1 of the nine-way valve 30 is connected to the third end 3 of the nine-way valve 30, the second end 2 of the nine-way valve 30 is connected to the sixth end 6 of the nine-way valve 30, the fourth end 4 of the nine-way valve 30 is connected to the ninth end 9 of the nine-way valve 30, the eighth end 8 of the nine-way valve 30 is connected to the seventh end 7 of the nine-way valve 30, the fifth end 5 of the nine-way valve 30 is closed, the first end 1 of the first three-way valve and the third end 3 of the first three-way valve are both open, and the second end 2 of the first three-way valve is closed.

[0160] The second water pipe joint 20-1-6 and the eighth water pipe joint 20-1-12 of the flow channel plate 20-1 are connected through the internal flow channel, the fourth water pipe joint 20-1-8 and the seventh water pipe joint 20-1-11 are connected through the internal flow channel, and the fifth water pipe joint 20-1-9 and the sixth water pipe joint 20-1-10 are connected through the internal flow channel.

[0161] In the third operating mode, the channel from the first three-way valve to the low-temperature radiator 7 is closed, and the channel from the first three-way valve to the heater core 4 is open. Both the battery water pump 9 and the heating water pump 11 are started. The coolant flows through the power battery 1 under the action of the battery water pump 9, and then flows through the water-cooled condenser 12 through the eighth end 8 and the seventh end 7 of the nine-way valve 30. In the water-cooled condenser 12, it exchanges heat with the refrigerant flowing through the water-cooled condenser 12. The heated coolant then enters the heater 8 through the heating water pump 11. The coolant is further heated in the heater 8. After further heating, the coolant enters the heater core 4 through the first three-way valve. In the heater core 4, the coolant exchanges heat with the air in the passenger compartment. After cooling, the coolant then enters the power battery 1 through the battery water pump 9.

[0162] In the third working mode, the motor water pump 10 starts, and the coolant flows through the first end 1 and the third end 3 of the nine-way valve 30 to the battery cooler 13 under the action of the motor water pump 10. The coolant exchanges heat with the refrigerant flowing through the battery cooler 13. After cooling, the coolant flows through the motor 2 and then enters the motor water pump 10.

[0163] In the third working mode, the compressor 3 starts, and the refrigerant enters the water-cooled condenser 12 under the action of the compressor 3 to exchange heat with the coolant flowing through the water-cooled condenser 12. The cooled refrigerant enters the battery cooler 13. In the battery cooler 13, the cooled refrigerant exchanges heat with the coolant flowing through the battery cooler 13 to cool the battery. The refrigerant flowing through the battery cooler 13 then enters the water-cooled condenser 12 through the compressor 3.

[0164] In some embodiments, the cooled refrigerant enters a liquid storage drying bottle for drying, and then enters the battery cooler 13 after being throttled and cooled by a throttling device.

[0165] In the fourth operating mode, the first end 1 of the nine-way valve 30 is connected to the third end 3 of the nine-way valve 30, the second end 2 of the nine-way valve 30 is connected to the eighth end 8 of the nine-way valve 30, the fifth end 5 of the nine-way valve 30 is connected to the fourth end 4 of the nine-way valve 30, the sixth end 6 of the nine-way valve 30 is connected to the seventh end 7 of the nine-way valve 30, the ninth end 9 of the nine-way valve 30 is open, and the first end 1, the second end 2, and the third end 3 of the three-way valve are all open.

[0166] In some embodiments, the opening ratio of the ninth end 9 of the nine-way valve 30 is located in a second preset range.

[0167] For example, the second preset range is 30%-50%.

[0168] For example, the ninth stage opening ratio of the nine-way valve 30 is 36%.

[0169] The second water pipe joint 20-1-6 and the eighth water pipe joint 20-1-12 of the flow channel plate 20-1 are connected through the internal flow channel, the fourth water pipe joint 20-1-8 and the fifth water pipe joint 20-1-9 are connected through the internal flow channel, and the seventh water pipe joint 20-1-11 and the sixth water pipe joint 20-1-10 are connected through the internal flow channel.

[0170] In the fourth working mode, the battery water pump 9 starts, and the coolant flows through the power battery 1 under the action of the battery water pump 9 and then enters the battery water pump 9 through the nine-way valve 30.

[0171] In the fourth operating mode, the motor water pump 10 starts, and the coolant flows through the first end 1 and the third end 3 of the nine-way valve 30 into the battery cooler 13 under the action of the motor water pump 10. The coolant exchanges heat with the refrigerant flowing through the battery cooler 13. The cooled coolant then enters the motor 2 radiator through the fourth end 4 and the fifth end 5 of the nine-way valve 30, where it exchanges heat with the ambient air. The further cooled coolant then enters the motor 2. The flow rate of the coolant flowing through the motor 2 radiator can be adjusted according to actual conditions.

[0172] In the fourth operating mode, the heating water pump 11 starts, the three-way valve to the low-temperature radiator 7 channel opens, and the three-way valve to the heater core 4 channel opens. Under the action of the heating water pump 11, the coolant enters the low-temperature radiator 7 and the heater core 4 through the three-way valve respectively. The coolant enters the low-temperature radiator 7 to exchange heat with the outside air, and the coolant enters the heater core 4 to exchange heat with the air in the passenger compartment. After cooling, the coolant flows through the sixth end 6 and the seventh end 7 of the nine-way valve 30 and then flows through the water-cooled condenser 12 to exchange heat with the refrigerant flowing through the water-cooled condenser 12. The heated coolant then enters the heating water pump 11 again.

[0173] In the fourth operating mode, compressor 3 starts, and the refrigerant enters the water-cooled condenser 12 under the action of compressor 3 to exchange heat with the coolant flowing through the water-cooled condenser 12. The cooled refrigerant enters the evaporator core 5 and the battery cooler 13. In the evaporator core 5, the cooled refrigerant absorbs water vapor in the surrounding air to dry it, realizing the dehumidification function of the crew cabin. In the battery cooler 13, the cooled refrigerant exchanges heat with the coolant flowing through the battery circuit of the battery cooler 13 to cool the battery. The refrigerant flowing through the evaporator core 5 and the battery cooler 13 then enters the water-cooled condenser 12 through compressor 3.

[0174] In some implementations, the cooled refrigerant enters the liquid storage drying bottle for drying, and then enters the evaporator core 5 and the battery cooler 13 after being throttled and cooled by the throttling device.

[0175] In the fifth operating mode, the first end 1 of the nine-way valve 30 is connected to the second end 2 of the nine-way valve 30, the fourth end 4 of the nine-way valve 30 is connected to the seventh end 7 of the nine-way valve 30, the fifth end 5 of the nine-way valve 30 is connected to the sixth end 6 of the nine-way valve 30, and the third end 3 of the nine-way valve 30 is connected to the eighth end 8 of the nine-way valve 30. The fifth end 5 of the nine-way valve 30 is closed, and the first end 1, the second end 2, and the third end 3 of the three-way valve are all open.

[0176] The second water pipe joint 20-1-6 and the sixth water pipe joint 20-1-10 of the flow channel plate 20-1 are connected through the internal flow channel, the fourth water pipe joint 20-1-8 and the seventh water pipe joint 20-1-11 are connected through the internal flow channel, and the fifth water pipe joint 20-1-9 and the eighth water pipe joint 20-1-12 are connected through the internal flow channel.

[0177] In the fifth working mode, the power battery 1, motor 2, heater core 4, motor 2 radiator, low temperature radiator 7, three-way valve, battery water pump 9, motor water pump 10, heating water pump 11, water-cooled condenser 12, battery cooler 13, nine-way valve 30, and heater 8 are connected in series through water pipes, and the battery water pump 9, motor water pump 10 and heating water pump 11 are started.

[0178] Understandably, in order to meet the different thermal management needs of vehicles, the thermal management system 100 in this application embodiment has five working modes: a first working mode, a second working mode, a third working mode, a fourth working mode, and a fifth working mode, so as to meet the thermal management needs of vehicles in different scenarios.

[0179] Understandably, integrating the battery water pump 9, motor water pump 10, heating water pump 11, water-cooled condenser 12, battery cooler 13, and connector 15 onto the flow channel plate 20-1 reduces the number of mounting bracket parts and meets the requirements for vehicle lightweighting. Furthermore, the use of the flow channel plate 20-1 reduces the number of sealing points on water pipes and connectors, thus reducing the space occupied in the engine compartment and making the entire vehicle more reliable. Moreover, the thermal management system 100 has a high degree of integration, which would otherwise require long assembly time; the water pipe connectors use a quick-connect structure, simplifying assembly.

[0180] In some designs, to protect the thermal management system 100, the thermal management system 100 also includes a liquid storage and drying bottle. The inlet of the liquid storage and drying bottle is connected to the refrigerant outlet of the water-cooled cooler, and the outlet of the liquid storage and drying bottle is connected to the inlet of the evaporator core 5.

[0181] Understandably, the liquid receiver dryer absorbs moisture from the sealed air conditioning pipes and filters out tiny impurities in the pipes, thereby protecting the thermal management system 100.

[0182] In some designs, to ensure timely replenishment of coolant, the thermal management system 100 also includes a water storage tank, the outlet of which is connected to both the motor 2 and the motor-driven water pump 10.

[0183] It is understandable that the coolant is replenished to the thermal management system 100 in a timely manner through the water storage bottle to ensure the stable operation of the thermal management system 100.

[0184] In one design, the thermal management system 100 also includes at least one fan. The fan is positioned at the location corresponding to the low-temperature radiator 7 and the radiator of the motor 2.

[0185] In some embodiments, fans may also be installed at positions corresponding to the heating core 4 and the evaporator core 5.

[0186] In one design, the thermal management system 100 also includes a temperature and pressure sensor and a temperature sensor.

[0187] For example, a temperature sensor is connected to the inlet of the power battery 1. A temperature and pressure sensor is connected to the inlet of the compressor 3. A temperature sensor is connected to the coolant inlet of the motor 2. A temperature and pressure sensor is connected to the coolant outlet of the evaporator core 5.

[0188] In one design, to meet the lightweight requirements of new energy vehicles and the multi-scenario requirements of thermal management, this application provides a control method for a thermal management system 100. The thermal management system 100 includes the thermal management system 100 as described above, and the control method is as follows: Figure 7 As shown, it includes: S1-S2.

[0189] S1. Obtain the current ambient temperature.

[0190] One possible approach is to acquire the current ambient temperature in real time or periodically.

[0191] S2. Determine the operating mode of the thermal management system 100 based on the current ambient temperature to perform thermal management on the power battery 1, motor 2 and / or passenger compartment.

[0192] As one possible approach, given the current ambient temperature, the operating mode of the thermal management system 100 is determined to perform thermal management on the power battery 1, the motor 2, and / or the passenger compartment.

[0193] In some embodiments, upon acquiring the current ambient temperature, the temperature range to which the current ambient temperature belongs is determined. If the current ambient temperature is greater than or equal to a first preset threshold, it is determined that the current ambient temperature belongs to a first temperature range, and the thermal management system 100 is controlled to enter a first operating mode. If the current ambient temperature is greater than or equal to a second preset threshold and less than the first preset threshold, it is determined that the current ambient temperature belongs to a second temperature range, and the thermal management system 100 is controlled to enter a second or fourth operating mode. If the current ambient temperature is less than the second preset threshold, it is determined that the current ambient temperature belongs to a third temperature range, and the thermal management system 100 is controlled to enter a third or fourth operating mode.

[0194] In some embodiments, if the current ambient temperature is greater than or equal to a second preset threshold and less than a first preset threshold, and the power battery 1 is in cooling mode, then the thermal management system 100 is controlled to enter a second operating mode. If the current ambient temperature is greater than or equal to the second preset threshold and less than the first preset threshold, and the power battery 1 is in temperature equalization mode, then the thermal management system 100 is controlled to enter a fourth operating mode. If the current ambient temperature is less than the second preset threshold and the power battery 1 is in heating mode, then the thermal management system 100 is controlled to enter a third operating mode. If the current ambient temperature is less than the second preset threshold and the power battery 1 is in temperature equalization mode, then the thermal management system 100 is controlled to enter a fourth operating mode.

[0195] In other embodiments, upon obtaining the current ambient temperature, it is determined whether the current ambient temperature is greater than or equal to a first preset threshold. If the current ambient temperature is greater than or equal to the first preset threshold, the thermal management system 100 is controlled to enter a first operating mode. If the current ambient temperature is less than the first preset threshold, it is determined whether the current ambient temperature is greater than or equal to a second preset threshold and less than the first preset threshold. If the current ambient temperature is greater than or equal to the second preset threshold and less than the first preset threshold, the thermal management system 100 is controlled to enter a second operating mode or a fourth operating mode. If the current ambient temperature is less than the second preset threshold, the thermal management system 100 is controlled to enter a third operating mode or a fourth operating mode.

[0196] For example, the first preset threshold can be 25°C, and the second preset threshold can be 10°C. Alternatively, the first preset threshold can be 28°C, and the second preset threshold can be 8°C. This application embodiment does not specifically limit the first preset threshold and the second preset threshold, and different temperature thresholds can be set by the operation and maintenance personnel according to different situations.

[0197] In another scenario, the current time is obtained, and the corresponding season is determined. If the current time corresponds to summer, the thermal management system 100 enters the first operating mode. If the current time corresponds to spring / autumn and the power battery 1 requires cooling, the thermal management system 100 enters the second operating mode. If the current time corresponds to spring / autumn and the power battery 1 requires temperature equalization, the thermal management system 100 enters the fourth operating mode. If the current time corresponds to winter and the power battery 1 requires heating, the thermal management system 100 enters the third operating mode. If the current time corresponds to winter and the power battery 1 requires temperature equalization, the thermal management system 100 enters the fourth operating mode.

[0198] Understandably, the thermal management system 100 determines its operating mode based on different temperatures to manage the thermal performance of the power battery 1, motor 2, and / or passenger compartment. The thermal management system 100 meets the lightweighting requirements of new energy vehicles while also satisfying the diverse thermal management needs across various scenarios.

[0199] In one design, in order to accurately manage the thermal performance of a vehicle, S2 provided in this application embodiment specifically includes: S201-S203.

[0200] S201. If the current ambient temperature is greater than or equal to the first preset threshold, the thermal management system 100 is controlled to enter the first working mode.

[0201] For example, taking an ambient temperature of 28°C and a first preset threshold of 26°C as an example, if the current ambient temperature of 28°C is greater than the first preset threshold of 26°C, the thermal management system 100 is controlled to enter the first working mode. This achieves battery cooling, motor 2 cooling, and passenger compartment cooling.

[0202] S202. If the current ambient temperature is greater than or equal to the second preset threshold and less than the first preset threshold, then control the thermal management system 100 to enter the second working mode or the fourth working mode.

[0203] As one possible approach, if the current ambient temperature is greater than or equal to the second preset threshold and less than the first preset threshold, the thermal management system 100 is controlled to randomly enter the second or fourth working mode.

[0204] As one possible implementation, if the current ambient temperature is lower than a second preset threshold, the demand mode of the power battery 1 is determined. If the demand mode of the power battery 1 is cooling mode, the thermal management system 100 is controlled to enter the second operating mode. If the demand mode of the power battery 1 is temperature equalization mode, the thermal management system 100 is controlled to enter the second operating mode.

[0205] In some embodiments, if the current ambient temperature is greater than or equal to a second preset threshold and less than a first preset threshold, the temperature of the power battery 1 is obtained. If the temperature of the power battery 1 is greater than a third preset threshold, the demand mode of the power battery 1 is determined to be cooling mode, and the thermal management system 100 is controlled to enter a second operating mode. If the temperature difference of the power battery 1 is greater than a fourth preset threshold, the demand mode of the power battery 1 is determined to be uniform temperature mode, and the thermal management system 100 is controlled to enter a fourth operating mode.

[0206] In some embodiments, if the current ambient temperature is greater than or equal to a second preset threshold and less than a first preset threshold, the system responds to a user operation. If the user operation is to enter a cooling mode, the system enters a second operating mode. If the user operation is to enter a uniform temperature mode, the system enters a fourth operating mode.

[0207] S203. If the current ambient temperature is less than the second preset threshold, control the thermal management system 100 to enter the third or fourth working mode.

[0208] As one possible approach, if the current ambient temperature is less than the second preset threshold, the thermal management system 100 is controlled to randomly enter the third or fourth working mode.

[0209] As one possible implementation, if the current ambient temperature is lower than a second preset threshold, the demand mode of the power battery 1 is determined. If the demand mode of the power battery 1 is a heating mode, the thermal management system 100 is controlled to enter a third operating mode. If the demand mode of the power battery 1 is a temperature equalization mode, the thermal management system 100 is controlled to enter a second operating mode.

[0210] In some embodiments, if the current ambient temperature is less than a second preset threshold, the temperature of the power battery 1 is acquired. If the temperature of the power battery 1 is less than a fifth preset threshold, the demand mode of the power battery 1 is determined to be a heating mode, and the thermal management system 100 is controlled to enter a third operating mode. If the temperature difference of the power battery 1 is greater than a fourth preset threshold, the demand mode of the power battery 1 is determined to be a temperature equalization mode, and the thermal management system 100 is controlled to enter a fourth operating mode.

[0211] In some embodiments, if the current ambient temperature is lower than a second preset threshold, the system responds to a user operation. If the user operation is to enter the heating mode, the system enters a third operating mode. If the user operation is to enter the temperature equalization mode, the system enters a fourth operating mode.

[0212] Understandably, in this embodiment of the application, the working mode of the thermal management system 100 is determined based on the current ambient temperature, which can accurately manage the vehicle's thermal performance and improve the user experience.

[0213] In one design, in order to accurately manage the thermal performance of a vehicle, S202 provided in this application embodiment specifically includes: S301-S302.

[0214] S301. If the current ambient temperature is greater than or equal to the second preset threshold, less than the first preset threshold, and the power battery 1 is in cooling mode, then control the thermal management system 100 to enter the second working mode.

[0215] As one possible approach, if the current ambient temperature is greater than or equal to a second preset threshold and less than a first preset threshold, the temperature of the power battery 1 is obtained. If the temperature of the power battery 1 is greater than a third preset threshold, the demand mode of the power battery 1 is determined to be cooling mode, and the thermal management system 100 is controlled to enter the second operating mode.

[0216] S302. If the current ambient temperature is greater than or equal to the second preset threshold, less than the first preset threshold, and the power battery 1 is in the uniform temperature mode, then control the thermal management system 100 to enter the fourth working mode.

[0217] As one possible approach, if the current ambient temperature is greater than or equal to a second preset threshold and less than a first preset threshold, the temperature of the power battery 1 is obtained. If the temperature difference of the power battery 1 is greater than a fourth preset threshold, the demand mode of the power battery 1 is determined to be the uniform temperature mode, and the thermal management system 100 is controlled to enter the fourth working mode.

[0218] S203 provided in the embodiments of this application includes: S303-S304.

[0219] S303. If the current ambient temperature is less than the second preset threshold and the power battery 1 is in heating mode, then control the thermal management system 100 to enter the third working mode.

[0220] As one possible approach, if the current ambient temperature is lower than a second preset threshold, the temperature of the power battery 1 is obtained. If the temperature of the power battery 1 is lower than a fifth preset threshold, the demand mode of the power battery 1 is determined to be the heating mode, and the thermal management system 100 is controlled to enter the third operating mode.

[0221] S304. If the current ambient temperature is less than the second preset threshold and the power battery 1 is in the uniform temperature mode, then control the thermal management system 100 to enter the fourth working mode.

[0222] As one possible approach, if the current ambient temperature is lower than a second preset threshold, the temperature of the power battery 1 is acquired. If the temperature difference of the power battery 1 is greater than a fourth preset threshold, and the demand mode of the power battery 1 is determined to be the uniform temperature mode, then the thermal management system 100 is controlled to enter the fourth operating mode.

[0223] Understandably, the thermal management system 100 determines the operating mode to be entered based on the current ambient temperature and the demand mode of the power battery 1, thereby precisely controlling the thermal management of the vehicle.

[0224] In one design, to determine the faults of the thermal management system 100. This application embodiment provides a control method for the thermal management system 100, which further includes: S3.

[0225] S3. In response to maintenance operations, control the thermal management system 100 to enter the fifth working mode.

[0226] As one possible approach, in the event of a malfunction in the thermal management system 100, the thermal management system 100 may enter a fifth operating mode in response to a maintenance operation.

[0227] Understandably, the fifth operating mode keeps multiple loops open, thus facilitating fault identification.

[0228] To better understand the control method of the thermal management system 100 provided in the embodiments of this application, such as Figure 8 The diagram illustrates the process for determining the operating mode of the thermal management system 100. Mode determination: In some embodiments, the vehicle enters the mode determination process upon startup.

[0229] As one possible implementation, the current ambient temperature is acquired. If the current ambient temperature is greater than or equal to a second preset threshold, less than a first preset threshold, and the power battery 1 is in cooling mode, then the thermal management system 100 is controlled to enter a second operating mode. If the current ambient temperature is greater than or equal to the second preset threshold, less than the first preset threshold, and the power battery 1 is in temperature equalization mode, then the thermal management system 100 is controlled to enter a fourth operating mode. If the current ambient temperature is less than the second preset threshold, and the power battery 1 is in heating mode, then the thermal management system 100 is controlled to enter a third operating mode. If the current ambient temperature is less than the second preset threshold, and the power battery 1 is in temperature equalization mode, then the thermal management system 100 is controlled to enter a fourth operating mode.

[0230] As another possible approach, the current time is obtained, and the corresponding season is determined. If the current time corresponds to summer, the thermal management system 100 enters the first operating mode. If the current time corresponds to spring / autumn and the power battery 1 requires cooling, the thermal management system 100 enters the second operating mode. If the current time corresponds to spring / autumn and the power battery 1 requires temperature equalization, the thermal management system 100 enters the fourth operating mode. If the current time corresponds to winter and the power battery 1 requires heating, the thermal management system 100 enters the third operating mode. If the current time corresponds to winter and the power battery 1 requires temperature equalization, the thermal management system 100 enters the fourth operating mode.

[0231] As another possible way to achieve this, such as Figure 8As shown, the system acquires the current ambient temperature. If the current ambient temperature is greater than or equal to a second preset threshold, it determines summer and enters the first operating mode. If the current ambient temperature is greater than or equal to the second preset threshold but less than the first preset threshold, it determines spring / autumn. Further, the system acquires the mode of the power battery 1. If the current demand of the power battery 1 is cooling, the thermal management system 100 enters the second operating mode. If the current demand of the power battery 1 is not cooling, the thermal management system 100 enters the fourth operating mode. If the current ambient temperature is less than the second preset threshold, the current season is determined to be winter. If the current demand of the power battery 1 is heating, the thermal management system 100 enters the third operating mode. If the current demand of the power battery 1 is not heating, the thermal management system 100 enters the fourth operating mode.

[0232] In addition, if a detection operation is detected, the detection mode is determined and the system enters the fifth working mode.

[0233] This application also provides a vehicle including the thermal management system 100 as described above.

[0234] This application also provides a computer-readable storage medium for storing computer-readable instructions that, when executed by a processor, cause the processor to perform the control method described above.

Claims

1. A thermal management system, characterized in that, The thermal management system includes a power battery, a motor, a heater core, a compressor, an evaporator core, a motor radiator, a low-temperature radiator, a heater, a battery water pump, a motor water pump, a heating water pump, a water-cooled condenser, a battery cooler, a multi-way valve, and connectors. The connectors are respectively connected to the outlet of the power battery, the inlet of the motor, the outlet of the heater core, the inlet of the motor radiator, the outlet of the low-temperature radiator, the inlet of the battery water pump, the outlet of the motor water pump, the coolant inlet of the water-cooled condenser, the cold liquid outlet of the battery cooler, and the cold liquid inlet of the battery cooler. The inlet of the motor-driven water pump is connected to the outlet of the motor, and the inlet of the motor is connected to the outlet of the motor radiator. The heater outlet is connected to the inlet of the low-temperature radiator and the inlet of the warm air core via the multi-way valve. The heater inlet is connected to the coolant outlet of the water-cooled condenser. The battery water pump outlet is connected to the power battery inlet. The evaporator core inlet is connected to the refrigerant outlet of the water-cooled condenser. The refrigerant inlet of the water-cooled condenser is connected to the refrigerant outlet of the compressor. The compressor inlet is connected to the evaporator core outlet. The battery cooler outlet is connected to the compressor refrigerant inlet. The heating water pump coolant outlet is connected to the heater inlet. The multi-way valve is a first three-way valve, and the connector is a nine-way valve. The first end of the nine-way valve is connected to the inlet of the motor water pump, the second end of the nine-way valve is connected to the inlet of the battery water pump, the third end of the nine-way valve is connected to the coolant inlet of the battery cooler, the fourth end of the nine-way valve is connected to the coolant outlet of the battery cooler, the fifth end of the nine-way valve is connected to the inlet of the motor radiator, the sixth end of the nine-way valve is connected to the outlet of the low-temperature radiator and the outlet of the heater core, the seventh end of the nine-way valve is connected to the coolant inlet of the water-cooled condenser, the eighth end of the nine-way valve is connected to the outlet of the battery, and the ninth end of the nine-way valve is connected to the inlet of the motor. The first end of the first three-way valve is connected to the outlet of the heater, the second end of the first three-way valve is connected to the inlet of the low-temperature radiator, and the third end of the first three-way valve is connected to the inlet of the warm air core. The thermal management system has a first working mode, a second working mode, a third working mode, a fourth working mode, and a fifth working mode; In the first working mode, the first end of the nine-way valve is connected to the fifth end of the nine-way valve, the second end of the nine-way valve is connected to the fourth end of the nine-way valve, the third end of the nine-way valve is connected to the eighth end of the nine-way valve, the sixth end of the nine-way valve is connected to the seventh end of the nine-way valve, the ninth end of the nine-way valve is closed, the first end of the first three-way valve and the second end of the first three-way valve are both open, and the third end of the first three-way valve is closed. In the second working mode, the first end of the nine-way valve is connected to the third end of the nine-way valve, the second end of the nine-way valve is connected to the fourth end of the nine-way valve, the fifth end of the nine-way valve is connected to the eighth end of the nine-way valve, the sixth end of the nine-way valve is connected to the seventh end of the nine-way valve, the ninth end of the nine-way valve is open, and the first end, the second end, and the third end of the first three-way valve are all open. In the third working mode, the first end of the nine-way valve is connected to the third end of the nine-way valve, the second end of the nine-way valve is connected to the sixth end of the nine-way valve, the fourth end of the nine-way valve is connected to the ninth end of the nine-way valve, the eighth end of the nine-way valve is connected to the seventh end of the nine-way valve, the fifth end of the nine-way valve is closed, the first end of the first three-way valve and the third end of the first three-way valve are both open, and the second end of the first three-way valve is closed. In the fourth operating mode, the first end of the nine-way valve is connected to the third end of the nine-way valve, the second end of the nine-way valve is connected to the eighth end of the nine-way valve, the fifth end of the nine-way valve is connected to the fourth end of the nine-way valve, the sixth end of the nine-way valve is connected to the seventh end of the nine-way valve, the ninth end of the nine-way valve is open, and the first end, the second end, and the third end of the first three-way valve are all open. In the fifth operating mode, the first end of the nine-way valve is connected to the second end of the nine-way valve, the fourth end of the nine-way valve is connected to the seventh end of the nine-way valve, the fifth end of the nine-way valve is connected to the sixth end of the nine-way valve, the third end of the nine-way valve is connected to the eighth end of the nine-way valve, the fifth end of the nine-way valve is closed, and the first end, the second end, and the third end of the first three-way valve are all open. The thermal management system is configured to: acquire the current ambient temperature; If the current ambient temperature is greater than or equal to a first preset threshold, then the thermal management system is controlled to enter the first working mode; If the current ambient temperature is greater than or equal to the second preset threshold and less than the first preset threshold, then the thermal management system is controlled to enter the second working mode or the fourth working mode. If the current ambient temperature is less than the second preset threshold, the thermal management system is controlled to enter the third or fourth working mode.

2. The thermal management system according to claim 1, characterized in that, The connector includes a first four-way valve, a second four-way valve, a third four-way valve, and a second three-way valve. The first end of the first four-way valve is connected to the inlet of the battery water pump, the second end of the first four-way valve is connected to the second end of the second four-way valve, the third end of the first four-way valve is connected to the coolant inlet of the battery cooler, and the fourth end of the first four-way valve is connected to the outlet of the motor water pump. The first end of the second four-way valve is connected to the coolant outlet of the battery cooler, the third end of the second four-way valve is connected to the first end of the third four-way valve, and the fourth end of the second four-way valve is connected to the first end of the second three-way valve. The second end of the third four-way valve is connected to the outlet of the power battery, the third end of the third four-way valve is connected to the inlet of the heating water pump, and the fourth end of the third four-way valve is connected to the outlets of the low-temperature radiator and the heating core, respectively. The second end of the second three-way valve is connected to the inlet of the motor radiator, and the third end of the second three-way valve is connected to the inlet of the motor radiator.

3. The thermal management system according to any one of claims 1-2, characterized in that, The thermal management system further includes a flow channel plate, and the battery water pump, the motor water pump, the heating water pump, the water-cooled condenser, the battery cooler, and the connector are integrated on the flow channel plate.

4. The thermal management system according to any one of claims 1-2, characterized in that, The thermal management system also includes a water storage bottle, the outlet of which is connected to the motor and the motor water pump.

5. The thermal management system according to any one of claims 1-2, characterized in that, The thermal management system also includes a liquid storage and drying bottle, the inlet of which is connected to the refrigerant outlet of the water-cooled condenser, and the outlet of which is connected to the inlet of the evaporator core.

6. A control method for a thermal management system, characterized in that, The thermal management system includes the thermal management system as described in any one of claims 1-5, and the control method includes: The system acquires the current ambient temperature and determines the operating mode of the thermal management system based on the current ambient temperature to perform thermal management on the power battery, the motor, and / or the passenger compartment.

7. The control method according to claim 6, characterized in that, If the current ambient temperature is greater than or equal to a second preset threshold and less than the first preset threshold, then the thermal management system is controlled to enter the second working mode or the fourth working mode, including: If the current ambient temperature is greater than or equal to the second preset threshold, less than the first preset threshold, and the power battery is in cooling mode, then the thermal management system is controlled to enter the second working mode. If the current ambient temperature is greater than or equal to the second preset threshold, less than the first preset threshold, and the power battery is in the uniform temperature mode, then the thermal management system is controlled to enter the fourth working mode. If the current ambient temperature is less than the second preset threshold, the thermal management system is controlled to enter the third or fourth working mode, including: If the current ambient temperature is less than the second preset threshold and the power battery is in heating mode, then the thermal management system is controlled to enter the third working mode. If the current ambient temperature is less than the second preset threshold and the power battery is in the uniform temperature mode, then the thermal management system is controlled to enter the fourth working mode.

8. The control method according to claim 7, characterized in that, The control method further includes: In response to maintenance operations, the thermal management system is controlled to enter the fifth operating mode.

9. A vehicle, characterized in that, The thermal management system includes any one of claims 1-5.

10. A computer-readable storage medium for storing computer-readable instructions, characterized in that, When the computer-readable instructions are executed by the processor, the processor performs the control method as described in any one of claims 6-8.

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