Thermal management system and vehicle

Abstract

The present application relates to the technical field of vehicles, and discloses a thermal management system and a vehicle. The thermal management system comprises a refrigerator circuit, a battery water circuit, a motor water circuit, a passenger compartment water circuit, and a control valve module; the control valve module is connected between each battery water sub-circuit, each motor water sub-circuit, and the passenger compartment water circuit; the control valve module is configured to control each battery water sub-circuit, each motor water sub-circuit, and the passenger compartment water circuit to be selectively communicated with each other, so that heat exchange can be selectively performed between each refrigerator sub-circuit, the battery water sub-circuit, the motor water sub-circuit, and the passenger compartment water circuit. In the thermal management system provided by the present application, the battery water circuit, the motor water circuit and the passenger compartment water circuit are coupled, thereby implementing comprehensive management of heat of a plurality of modules, further reducing the energy consumption of a vehicle, and improving the endurance of the vehicle.

Description

Thermal management system and vehicle

[0001] Cross-references to related applications

[0002] This application asserts priority based on Chinese Patent Application No. 202411774033.1 filed on December 4, 2024 and Chinese Patent Application No. 202522176708.9 filed on October 14, 2025, the entire contents of which are incorporated herein by reference. [Technical Field]

[0003] This application relates to the field of vehicle technology, and in particular to a thermal management system and vehicle equipment. [Background Technology]

[0004] A vehicle comprises a battery and a motor. The battery provides electrical power, while the motor drives the vehicle. The battery (motor) generates heat during operation, requiring cooling; conversely, when the ambient temperature is below the battery's (motor's) normal operating temperature, insulation is necessary. Therefore, thermal management of both the battery and motor is essential. The vehicle also features an air conditioner for cooling or heating the passenger compartment, which also requires thermal management. In related technologies, thermal management systems comprise three subsystems: passenger compartment thermal management, battery thermal management, and motor thermal management. These subsystems operate relatively independently, making comprehensive heat management difficult, resulting in higher energy consumption and impacting the vehicle's range.

[0005] [Application Content]

[0006] This application provides a thermal management system and a vehicle that can solve the technical problem of high energy consumption affecting the driving range of vehicles.

[0007] To address the aforementioned technical problems, this application provides a thermal management system, comprising: a refrigerant circuit, a battery water circuit, a motor water circuit, a passenger compartment water circuit, and a control valve module. The refrigerant circuit includes a compressor, a first heat exchanger, and a battery cooler, with the first heat exchanger and battery cooler connected to the compressor to form multiple sub-refrigerant circuits. The battery water circuit is used to regulate the battery temperature and includes multiple battery sub-water circuits, one of which is connected to the battery cooler. The motor water circuit is used to regulate the motor temperature and includes multiple motor sub-water circuits. The passenger compartment water circuit is used for heating the passenger compartment and is connected to the first heat exchanger. The control valve module is connected between each of the battery sub-water circuits, each of the motor sub-water circuits, and the passenger compartment water circuit. The control valve module is configured to selectively connect each of the battery sub-water circuits, each of the motor sub-water circuits, and the passenger compartment water circuit, allowing selective heat exchange between the sub-refrigerant circuits, each of the battery sub-water circuits, each of the motor sub-water circuits, and the passenger compartment water circuit.

[0008] This application also provides a vehicle that includes the thermal management system described above.

[0009] The thermal management system provided in this application includes, firstly, a refrigerant circuit comprising multiple sub-refrigerant circuits, a battery water circuit comprising multiple battery sub-water circuits, and a motor water circuit comprising multiple motor sub-water circuits. This allows each of the refrigerant circuit, battery water circuit, and motor water circuit to have multiple selectable thermal management modes, enabling the selection of the appropriate mode as needed to achieve refined management of vehicle heat, thereby reducing vehicle energy consumption. Secondly, the thermal management system includes a control valve module that can selectively connect each battery sub-water circuit, each motor sub-water circuit, and the passenger compartment water circuit. This allows selective heat exchange between each of the sub-refrigerant circuits, each battery sub-water circuit, each motor sub-water circuit, and the passenger compartment water circuit, thereby coupling the battery water circuit, motor water circuit, and passenger compartment water circuit to achieve comprehensive management of heat from multiple modules, further reducing vehicle energy consumption and improving vehicle range. [Attached Image Description]

[0010] Figure 1 is a schematic diagram of an embodiment of the thermal management system provided in this application;

[0011] Figure 2 is a schematic diagram of another embodiment of the thermal management system provided in this application;

[0012] Figure 3 is a schematic diagram of the circulation state of the first sub-refrigerant loop in an embodiment of the thermal management system provided in this application;

[0013] Figure 4 is a schematic diagram of the circulation state of the second sub-refrigerant loop in an embodiment of the thermal management system provided in this application;

[0014] Figure 5 is a schematic diagram of the circulation state of the third sub-refrigerant loop in an embodiment of the thermal management system provided in this application;

[0015] Figure 6 is a schematic diagram of the circulation state of the fourth sub-refrigerant loop in an embodiment of the thermal management system provided in this application;

[0016] Figure 7 is a structural schematic diagram of another embodiment of the thermal management system provided in this application;

[0017] Figure 8 is a structural schematic diagram of another embodiment of the thermal management system provided in this application;

[0018] Figures 9-19 are schematic diagrams of the conduction states of the eight-way valve of the thermal management system shown in Figure 7 in various working modes;

[0019] Figures 20-30 are schematic diagrams of the conduction states of the nine-way valve of the thermal management system shown in Figure 8 in various working modes;

[0020] Figure 31 is a partial structural schematic diagram of an embodiment of the thermal management system provided in this application;

[0021] Figure 32 is a partial structural schematic diagram of another embodiment of the thermal management system provided in this application;

[0022] Figure 33 is a partial structural schematic diagram of another embodiment of the thermal management system provided in this application;

[0023] Figure 34 is a schematic diagram of a vehicle embodiment provided in this application.

Detailed Implementation Methods

[0024] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0025] In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "first," "second," and "third" in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movements between components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indication will also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.

[0026] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] This application provides a thermal management system 100. Referring to Figure 1, the thermal management system 100 may include a refrigerant circuit 10, a battery water circuit 20, a motor water circuit 30, a passenger compartment water circuit 40, and a control valve module. The control valve module includes a first control valve assembly 50 and a second control valve assembly 60. The refrigerant circuit 10 can absorb or release heat through changes in the refrigerant state. The refrigerant circuit 10 includes a compressor 11, a first heat exchanger 12, and a battery cooler 13. The compressor 11 can change the state of the refrigerant by performing work. During the state change of the refrigerant, heat is absorbed or released, thereby absorbing heat from the passenger compartment, battery, or motor, or releasing heat to the passenger compartment, battery, or motor to regulate the temperature of the passenger compartment, battery, or motor. The first heat exchanger 12 is used for heat exchange with the passenger compartment water circuit 40. The first heat exchanger 12 may be a plate heat exchanger. The battery cooler 13 is used for heat exchange with the battery water circuit 20. The first heat exchanger 12 and the battery cooler 13 are connected to the compressor 11 to form multiple sub-refrigerant circuits 19. There can be two, three, four, or more sub-refrigerant circuits 19. The more sub-refrigerant circuits 19 there are, the more selectable thermal management modes the refrigerant circuit 10 can have. By configuring the refrigerant circuit 10 to include multiple sub-refrigerant circuits 19, the refrigerant circuit 10 can have multiple selectable thermal management modes, allowing the appropriate mode to be selected as needed, thereby achieving refined management of vehicle heat and reducing vehicle energy consumption.

[0028] The battery water circuit 20 includes a battery 21 and a battery water pump 22, as shown in Figure 1. The battery water circuit 20 is used to regulate the temperature of the battery 21. When the battery water pump 22 operates, it pressurizes the water, causing the water to circulate within the battery water circuit 20. The battery water circuit 20 cools the battery 21 by removing the heat generated during its operation through water circulation; alternatively, when the ambient temperature is low, the battery water circuit 20 releases heat to the battery 21 through water circulation, thus keeping the battery 21 warm. This ensures that the battery 21 operates normally at low temperatures or improves its range. The battery water circuit 20 includes multiple battery sub-water circuits 23. There can be two, three, or more battery sub-water circuits 23. The more battery sub-water circuits 23 there are, the more selectable thermal management modes the battery water circuit 20 can offer. By including multiple battery sub-water circuits 23 in the battery water circuit 20, multiple selectable thermal management modes are provided, allowing for the selection of the appropriate mode as needed, achieving refined management of vehicle heat and thus reducing vehicle energy consumption. One of the battery sub-water circuits 23 is connected to the battery cooler 13, so that the refrigerant circuit 10 can exchange heat with the battery water circuit 20 to absorb the heat in the battery water circuit 20.

[0029] The motor water circuit 30 includes a motor 31 and a motor water pump 32, as shown in Figure 1. The motor water circuit 30 is used to regulate the temperature of the motor 31 to achieve cooling or heat preservation. When the motor water pump 32 is working, it pressurizes the water, causing the water to circulate within the motor water circuit 30. The motor water circuit 30 includes multiple motor sub-water circuits 34. There can be two, three, or more motor sub-water circuits 34. The more motor sub-water circuits 34 there are, the more selectable thermal management modes the motor water circuit 30 can have. By including multiple motor sub-water circuits 34 in the motor water circuit 30, multiple selectable thermal management modes are provided, allowing for the selection of the appropriate mode as needed, achieving refined management of vehicle heat, thereby reducing vehicle energy consumption. The passenger compartment water circuit 40 is used for heating the passenger compartment. The passenger compartment water circuit 40 is connected to the first heat exchanger 12, allowing the refrigerant circuit 10 to exchange heat with the passenger compartment water circuit 40, releasing heat to the passenger compartment water circuit 40.

[0030] The control valve module is configured to selectively connect each battery sub-water circuit 23, each motor sub-water circuit 34, and the passenger compartment water circuit 40, so that heat exchange can selectively occur between each sub-refrigerant circuit 19, each battery sub-water circuit 23, each motor sub-water circuit 34, and the passenger compartment water circuit 40.

[0031] Referring to Figure 1, a first control valve assembly 50 is connected between each battery sub-water circuit 23 and the passenger compartment water circuit 40, and a second control valve assembly 60 is connected between each battery sub-water circuit 23 and each motor sub-water circuit 34. The first control valve assembly 50 is configured to selectively connect each battery sub-water circuit 23 to the passenger compartment water circuit 40, and the second control valve assembly 60 is configured to selectively connect each battery sub-water circuit 23 to the motor sub-water circuit 34, so that heat exchange can selectively occur between each refrigerant sub-circuit 19, each battery sub-water circuit 23, each motor sub-water circuit 34, and the passenger compartment water circuit 40. For example, the second control valve assembly 60 controls one of the battery sub-water circuits 23 to connect with one of the motor sub-water circuits 34, so that the battery sub-water circuit 23 and the motor sub-water circuit 34 form a series circuit; and the first control valve assembly 50 controls the battery sub-water circuit 23 connected to the battery cooler 13 to be open, so that the refrigerant circuit 10 can absorb the heat in the battery sub-water circuit 23 and the motor sub-water circuit 34, and transfer the heat to the passenger compartment water circuit 40 through the first heat exchanger 12 in the refrigerant circuit 10. In the above heat exchange mode, the heat emitted by the motor 31 and the battery 21 when they are working is used for heating the passenger compartment, realizing comprehensive heat management, which can reduce the power consumption of the compressor 11 when heating the passenger compartment, thereby reducing the energy consumption of the vehicle. For example, the motor water circuit 30 is provided with a motor sub-water circuit 34 for heat dissipation to the outside. The second control valve assembly 60 controls one of the battery sub-water circuits 23 to connect with the motor sub-water circuit 34 for heat dissipation to the outside, so that the battery sub-water circuit 23 and the motor sub-water circuit 34 form a series circuit. At this time, the battery 21 can dissipate heat to the outside through the motor sub-water circuit 34, realizing comprehensive heat management. The heat dissipation of the battery 21 does not require the compressor 11 to do work, which can reduce the power consumption of the compressor 11 when the battery 21 dissipates heat, thereby reducing the energy consumption of the vehicle.

[0032] The thermal management system 100 provided in this application includes, firstly, a refrigerant circuit 10 comprising multiple sub-refrigerant circuits 19, a battery water circuit 20 comprising multiple battery sub-water circuits 23, and a motor water circuit 30 comprising multiple motor sub-water circuits 34. This allows each of the refrigerant circuit 10, battery water circuit 20, and motor water circuit 30 to have multiple selectable thermal management modes, enabling the selection of the appropriate mode as needed to achieve refined management of vehicle heat and thus reduce vehicle energy consumption. Secondly, a first control valve assembly 50 can selectively connect each battery sub-water circuit 23 to the passenger compartment water circuit 40, and a second control valve assembly 60 can selectively connect each battery sub-water circuit 23 to each motor sub-water circuit 34. This allows selective heat exchange between the sub-refrigerant circuits 19, battery sub-water circuits 23, motor sub-water circuits 34, and passenger compartment water circuit 40, thereby coupling the battery water circuit 20, motor water circuit 30, and passenger compartment water circuit 40 to achieve comprehensive management of heat from multiple modules, further reducing vehicle energy consumption and improving vehicle range.

[0033] In one embodiment, as shown in FIG2, the refrigerant circuit 10 includes at least four sub-refrigerant circuits 19, the battery water circuit 20 includes two battery sub-water circuits 23, and the motor water circuit 30 includes two motor sub-water circuits 34. This arrangement ensures that the number of sub-refrigerant circuits 19, battery sub-water circuits 23, and motor sub-water circuits 34 is appropriate. On the one hand, the number of sub-refrigerant circuits 19, battery sub-water circuits 23, and motor sub-water circuits 34 is not too small, and each of the refrigerant circuits 10, battery water circuits 20, and motor water circuits 30 has a certain selectable thermal management mode, allowing for the selection of the appropriate mode as needed to achieve refined management of vehicle heat, thereby reducing vehicle energy consumption. On the other hand, the number of sub-refrigerant circuits 19, battery sub-water circuits 23, and motor sub-water circuits 34 is not excessive, which helps to reduce the complexity of the water circuits.

[0034] Referring to Figure 2, in one embodiment, battery 21, battery water pump 22, first control valve assembly 50, second control valve assembly 60, and battery cooler 13 are connected to form a first battery sub-water circuit 23a. The connection between battery 21 and other components means that the pipes installed on battery 21 are connected to the pipes of other components. The first battery sub-water circuit 23a can exchange heat with the sub-refrigerant circuit 19 through the battery cooler 13, thereby coupling the battery water circuit 20 and the motor water circuit 30 with the refrigerant circuit 10, achieving comprehensive heat management of multiple modules. Battery 21, battery water pump 22, first control valve assembly 50, and second control valve assembly 60 are connected to form a second battery sub-water circuit 23b. The second battery sub-water circuit 23b is equipped with a first control valve assembly 50 and a second control valve assembly 60. Since the first control valve assembly 50 is connected between each battery sub-water circuit 23 and the crew compartment water circuit 40, and the second control valve assembly 60 is connected between each battery sub-water circuit 23 and each motor sub-water circuit 34, the second battery sub-water circuit 23b can couple the battery water circuit 20, the motor water circuit 30 and the crew compartment water circuit 40 to achieve comprehensive heat management of multiple modules.

[0035] Referring to Figure 2, in one embodiment, the motor water circuit 30 includes a motor 31, a motor water pump 32, and a radiator 33. The motor 31, motor water pump 32, second control valve assembly 60, and radiator 33 are connected to form a first motor sub-water circuit 34a. The radiator 33 is used to dissipate heat from the first motor sub-water circuit 34a to the air. The connection between the motor 31 and other components means that the pipes installed on the motor 31 are connected to the pipes of other components. The first motor sub-water circuit 34a can exchange heat with the air through the radiator 33, dissipating the heat generated by the motor 31 during operation to the air, thus cooling the motor 31. Since the cooling of the motor 31 does not require the compressor 11 to perform work, the power consumption of the compressor 11 during motor cooling can be reduced, thereby reducing the vehicle's energy consumption. The motor 31, motor water pump 32, and second control valve assembly 60 are connected to form a second motor sub-water circuit 34b. The second motor sub-water circuit 34b can be used for heat preservation of the motor 31. For example, the second control valve assembly 60 controls the second motor sub-water circuit 34b to connect with the second battery sub-water circuit 23b, and the first control valve assembly 50 controls the second battery sub-water circuit 23b to connect with the passenger compartment water circuit 40. The passenger compartment water circuit 40 is connected with the first heat exchanger 12, so that the refrigerant circuit 10 can release heat to the passenger compartment, battery 21 and motor 31 simultaneously through the first heat exchanger 12, thereby achieving heat preservation of motor 31 and battery 21.

[0036] In one embodiment, as shown in FIG3, the refrigerant circuit 10 further includes a second heat exchanger 14, a gas-liquid separator 15, and at least one evaporator 16. The second heat exchanger 14 is used to exchange heat with the air. For example, in cooling mode, the second heat exchanger 14 can release heat to the air; or in heating mode, the second heat exchanger 14 can absorb heat from the air. The gas-liquid separator 15 is used to separate liquid refrigerant and gaseous refrigerant. Separating the liquid and gas prevents liquid from entering the compressor 11, avoiding liquid slugging, thereby ensuring the normal operation of the compressor 11 and preventing it from overloading or being damaged. Each evaporator 16 is located in the passenger compartment. The evaporators 16 are used for cooling the passenger compartment. The number of evaporators 16 can be one or two. The second heat exchanger 14, the compressor 11, and the gas-liquid separator 15 are respectively connected to each evaporator 16 to form at least one first sub-refrigerant circuit 19a, and each first sub-refrigerant circuit 19a is used for cooling the passenger compartment.

[0037] Referring to Figure 4, the second heat exchanger 14, compressor 11, gas-liquid separator 15, and battery cooler 13 are connected to form a second sub-refrigerant circuit 19b. The second sub-refrigerant circuit 19b can absorb heat from the first battery sub-water circuit 23a through the battery cooler 13. The second sub-refrigerant circuit 19b can be used to cool the battery 21. When the first battery sub-water circuit 23a is connected to the second motor sub-water circuit 34b, the second sub-refrigerant circuit 19b can also absorb heat from both the first battery sub-water circuit 23a and the second motor sub-water circuit 34b through the battery cooler 13. In this case, the second sub-refrigerant circuit 19b can be used to cool the battery 21 and the motor 31.

[0038] Referring to Figure 5, the second heat exchanger 14, compressor 11, gas-liquid separator 15, and first heat exchanger 12 are connected to form a third sub-refrigerant circuit 19c. The third sub-refrigerant circuit 19c can release heat to the passenger compartment water circuit 40 through the first heat exchanger 12. The third sub-refrigerant circuit 19c can be used for heating the passenger compartment, and the heat at this time comes from the heat absorbed from the air by the second heat exchanger 14. When the second battery sub-water circuit 23b and the second motor sub-water circuit 34b are connected to the passenger compartment water circuit 40, the third sub-refrigerant circuit 19c can also release heat to the passenger compartment water circuit 40, the second battery sub-water circuit 23b, and the second motor sub-water circuit 34b through the first heat exchanger 12, thereby achieving heat preservation of the battery 21 and the motor 31.

[0039] Referring to Figure 6, the first heat exchanger 12, compressor 11, gas-liquid separator 15, and battery cooler 13 are connected to form a fourth sub-refrigerant circuit 19d. The fourth sub-refrigerant circuit 19d can absorb heat from the first battery sub-water circuit 23a and the second motor sub-water circuit 34b through the battery cooler 13, and can release heat to the passenger compartment water circuit through the first heat exchanger 12. This configuration allows the fourth sub-refrigerant circuit 19d to cool the motor 31 and battery 21, and uses the heat dissipated by the motor 31 and battery 21 during operation for heating the passenger compartment, achieving comprehensive heat management. This reduces the power consumption of the compressor 11 during passenger compartment heating, thereby reducing the vehicle's energy consumption.

[0040] The first control valve assembly 50 may include a plurality of one-way water valves, three-way water valves, or four-way water valves. Alternatively, as shown in Figure 2, the first control valve assembly 50 includes a five-way water valve. The first control valve assembly 50 has a first control valve first end 51, a first control valve second end 52, a first control valve third end 53, a first control valve fourth end 54, and a first control valve fifth end 55. One inlet and one outlet of the first battery sub-water circuit 23a are respectively connected to the first control valve second end 52 and the first control valve fifth end 55 of the first control valve assembly 50. One inlet and one outlet of the second battery sub-water circuit 23b are respectively connected to the first control valve second end 52 and the first control valve first end 51 of the first control valve assembly 50. The inlet and one outlet of the crew compartment water circuit 40 are respectively connected to the first control valve assembly 50 fourth end 54 and the first control valve third end 53. The first control valve assembly 50 includes a five-way water valve with five ports, which can meet the connection requirements of the battery sub-water circuit 23 and the crew compartment water circuit 40, and reduces the number of control valves, thus simplifying the structure of the thermal management system 100. Furthermore, one inlet of the first battery sub-water circuit 23a and one inlet of the second battery sub-water circuit 23b share the second end 52 of the first control valve, achieving partial pipeline merging and simplifying the pipeline layout.

[0041] The second control valve assembly 60 may include several one-way water valves, three-way water valves, or four-way water valves. Alternatively, as shown in Figure 2, the second control valve assembly 60 includes a five-way water valve. The second control valve assembly 60 has a first control valve end 61, a second control valve end 62, a third control valve end 63, a fourth control valve end 64, and a fifth control valve end 65. The other inlet and outlet ends of the first battery sub-water circuit 23a are respectively connected to the second control valve end 64 and the second control valve end 63 of the second control valve assembly 60. The other inlet and outlet ends of the second battery sub-water circuit 23b are also respectively connected to the second control valve end 64 and the second control valve end 63 of the second control valve assembly 60. The inlet and outlet ends of the first motor sub-water circuit 34a are respectively connected to the second control valve end 62 and the second control valve end 65 of the second control valve assembly 60. The inlet and outlet ends of the second motor sub-water circuit 34b are respectively connected to the second control valve end 62 and the second control valve end 61 of the second control valve assembly 60. The second control valve assembly 60 includes a five-way water valve with five ports, which can meet the connection requirements of the battery sub-water circuit 23 and the motor sub-water circuit 34, and reduces the number of control valves, thus simplifying the structure of the thermal management system 100. Furthermore, another inlet of the first battery sub-water circuit 23a shares the fourth terminal 64 of the second control valve with another inlet of the second battery sub-water circuit 23b; another outlet of the first battery sub-water circuit 23a shares the third terminal 63 of the second control valve with another outlet of the second battery sub-water circuit 23b; and the inlet of the first motor sub-water circuit 34a shares the second terminal 62 of the second control valve with the inlet of the second motor sub-water circuit 34b, achieving partial pipeline merging and simplifying pipeline layout.

[0042] Referring to Figure 2, in one embodiment, the thermal management system 100 includes an expansion tank 70, and the battery water circuit 20, motor water circuit 30, and passenger compartment water circuit 40 are all connected to the expansion tank 70. The expansion tank 70 is used to store water and regulate the pressure in the water circuit. When water circulates in the water circuit, the water expands due to heat, and excess water can flow into the expansion tank 70, thereby preventing excessive pressure in the water circuit. The expansion tank 70 has space inside to accommodate air; when the pressure in the water circuit is too high, some air can be expelled, thereby ensuring stable operation of the water circuit.

[0043] The refrigerant circuit 10 also includes an electronic expansion valve 17 and a solenoid valve 18. The number of electronic expansion valves 17 and solenoid valves 18 can be determined as needed. The electronic expansion valve 17 is used to control the flow rate and pressure of the refrigerant in each sub-refrigerant circuit 19. The electronic expansion valve 17 can control the flow rate of the refrigerant through an electrical signal, thereby achieving precise temperature regulation and pressure control. Compared with a thermostatic expansion valve, the electronic expansion valve 17 has a faster response speed and a wider adjustment range, which can better meet the needs of the thermal management system 100. The solenoid valve 18 is used to control the on / off state of each sub-refrigerant circuit 19 or change the flow direction of the refrigerant in the circuit, so as to selectively control each sub-refrigerant circuit 19 to be in the working state. The solenoid valve 18 is controlled by an electrical signal and can be easily connected to the controller. In addition, the solenoid valve 18 also has the advantages of fast response speed, low power consumption, and small size.

[0044] As mentioned earlier, the number of evaporators 16 can be one or two. In one embodiment, as shown in Figure 2, there are two evaporators 16, which are respectively located in the front and rear areas of the passenger compartment. The second heat exchanger 14, compressor 11, and gas-liquid separator 15 are connected to the two evaporators 16 to form two first sub-refrigerant circuits 19a, which are used for cooling the front and rear areas of the passenger compartment, respectively. By setting two evaporators 16 in the front and rear areas of the passenger compartment, zoned cooling of the passenger compartment can be achieved, which is beneficial for the refined management of passenger compartment heat and thus reduces vehicle energy consumption.

[0045] In one embodiment, as shown in FIG2, the crew compartment water circuit 40 includes a heating core 41 and a heating water pump 42. The heating core 41 is disposed in the crew compartment. The heating core 41, the heating water pump 42, and the first heat exchanger 12 are connected to form the crew compartment water circuit 40. The heating core 41 is used for heating the crew compartment.

[0046] In one embodiment, as shown in Figure 2, the heater core 41 is disposed in the front row area of ​​the passenger compartment, and the thermal management system 100 also includes a heater 80 disposed in the rear row area of ​​the passenger compartment. Both the heater core 41 and the heater 80 are used for heating the passenger compartment. By distributing the heater core 41 and the heater 80 in the front and rear rows of the passenger compartment respectively, zoned heating of the passenger compartment can be achieved, which is beneficial for the refined management of passenger compartment heat and thus reduces vehicle energy consumption.

[0047] The thermal management system 100 provided in this application has a first control valve assembly 50 that can selectively connect each battery sub-water circuit 23 to the passenger compartment water circuit 40, and a second control valve assembly 60 that can selectively connect each battery sub-water circuit 23 to each motor sub-water circuit 34. Corresponding thermal management modes can be achieved by changing the water circuit connection method. Some exemplary thermal management modes are described below.

[0048] Referring to Figures 3 and 6, in one embodiment, the third end 53 and the fourth end 54 of the first control valve of the first control valve assembly 50 are connected, and the first end 51 and the second end 52 of the first control valve of the first control valve assembly 50 are connected; the second end 62 of the second control valve of the second control valve assembly 60 is connected, and the fourth end 64 and the fifth end 65 of the second control valve of the second control valve assembly 60 are connected. In the above thermal management mode, the crew compartment water circuit 40 is connected, and the crew compartment can be independently heated or cooled; the second battery sub-water circuit 23b is coupled in series with the first motor sub-water circuit 34a, and the battery 21 and the motor 31 dissipate heat through the radiator 33.

[0049] Referring to Figures 3 and 6, in one embodiment, the third end 53 and the fourth end 54 of the first control valve of the first control valve assembly 50 are connected, and the first end 51 and the second end 52 of the first control valve of the first control valve assembly 50 are connected; the third end 63 and the fourth end 64 of the second control valve of the second control valve assembly 60 are connected, and the second end 62 and the fifth end 65 of the second control valve of the second control valve assembly 60 are connected. In the above thermal management mode, the crew compartment water circuit 40 is connected, allowing the crew compartment to be heated or cooled independently; the second battery sub-water circuit 23b is connected, allowing the battery 21 to dissipate heat through water circulation; the first motor sub-water circuit 34a is connected, allowing the motor 31 to dissipate heat through the radiator 33. At this time, the three water circuits are relatively independent.

[0050] Referring to Figures 3 and 4, in one embodiment, the third end 53 and the fourth end 54 of the first control valve of the first control valve assembly 50 are connected, and the second end 52 and the fifth end 55 of the first control valve of the first control valve assembly 50 are connected; the third end 63 of the second control valve of the second control valve assembly 60 and the fourth end 64 of the second control valve are connected, and the second end 62 of the second control valve of the second control valve assembly 60 and the fifth end 65 of the second control valve are connected. In the above thermal management mode, the crew compartment water circuit 40 is connected, allowing the crew compartment to be independently heated or cooled; the first battery sub-water circuit 23a is connected, and the battery 21 dissipates heat through the second sub-refrigerant circuit 19b; the first motor sub-water circuit 34a is connected, and the motor 31 dissipates heat through the radiator 33.

[0051] Referring to Figures 3 and 6, in one embodiment, the third end 53 and the fourth end 54 of the first control valve of the first control valve assembly 50 are connected, and the first end 51 and the second end 52 of the first control valve of the first control valve assembly 50 are connected; the first end 61 of the second control valve of the second control valve assembly 60 and the fourth end 64 of the second control valve are connected, and the second end 62 of the second control valve of the second control valve assembly 60 and the third end 63 of the second control valve are connected. In the above thermal management mode, the crew compartment water circuit 40 is connected, and the crew compartment can be independently heated or cooled; the second battery sub-water circuit 23b and the second motor sub-water circuit 34b are coupled in series, and the battery 21 and the motor 31 are kept warm through water circulation.

[0052] Referring to Figure 6, in one embodiment, the first control valve second end 52 and the first control valve third end 53 of the first control valve assembly 50 are connected, and the first control valve first end 51 and the first control valve fourth end 54 of the first control valve assembly 50 are connected; the second control valve third end 63 and the second control valve fourth end 64 of the second control valve assembly 60 are connected, and the second control valve second end 62 and the second control valve fifth end 65 of the second control valve assembly 60 are connected. In the above thermal management mode, the passenger compartment water circuit 40 is connected in series with the second battery sub-water circuit 23b. Since the passenger compartment water circuit 40 is connected to the first heat exchanger 12 in the third sub-refrigerant circuit 19c, the fourth sub-refrigerant circuit 19d can release heat to the passenger compartment water circuit 40 and the second battery sub-water circuit 23b. At this time, the compressor 11 is used for heating the passenger compartment and insulating the battery 21; the first motor sub-water circuit 34a is connected, and the motor 31 dissipates heat through the radiator 33.

[0053] Referring to Figure 6, in one embodiment, the first control valve second end 52 and the first control valve third end 53 of the first control valve assembly 50 are connected, and the first control valve first end 51 and the first control valve fourth end 54 of the first control valve assembly 50 are connected; the second control valve first end 61 and the second control valve fourth end 64 of the second control valve assembly 60 are connected, and the second control valve second end 62 and the second control valve third end 63 of the second control valve assembly 60 are connected. In the above thermal management mode, the passenger compartment water circuit 40 is coupled in series with the second battery sub-water circuit 23b and the second motor sub-water circuit 34b. Since the passenger compartment water circuit 40 is connected to the first heat exchanger 12 in the third sub-refrigerant circuit 19c, the fourth sub-refrigerant circuit 19d can release heat to the passenger compartment water circuit 40 and the second battery sub-water circuit 23b. At the same time, the heat from the motor 31 is released to the second battery sub-water circuit 23b. At this time, the heat released by the compressor 11 and the motor 31 simultaneously heats the battery 21.

[0054] Referring to Figure 6, in one embodiment, the first control valve third end 53 and the first control valve fourth end 54 of the first control valve assembly 50 are connected, and the first control valve second end 52 and the first control valve fifth end 55 of the first control valve assembly 50 are connected; the second control valve first end 61 and the second control valve fourth end 64 of the second control valve assembly 60 are connected, and the second control valve second end 62 and the second control valve third end 63 of the second control valve assembly 60 are connected. In the above thermal management mode, the first battery sub-water circuit 23a and the second motor sub-water circuit 34b are coupled in series. The fourth sub-refrigerant circuit 19d can absorb the heat from the first battery sub-water circuit 23a and the second motor sub-water circuit 34b through the battery cooler 13. The fourth sub-refrigerant circuit 19d can also release heat to the passenger compartment water circuit through the first heat exchanger 12. This allows the fourth sub-refrigerant circuit 19d to cool the motor 31 and the battery 21. The heat emitted by the motor 31 and the battery 21 during operation can be used for heating the passenger compartment, thus achieving comprehensive heat management. This can reduce the power consumption of the compressor 11 when heating the passenger compartment, thereby reducing the vehicle's energy consumption.

[0055] This application also provides a thermal management system 100. Referring to Figures 7 and 8, the thermal management system 100 includes a control valve module, a crew compartment water circuit 40, a radiator 33, a motor water circuit 30, a battery water circuit 20, and a battery cooler 13. The control valve module includes a multi-way valve 90.

[0056] The multi-way valve 90 includes a valve body and a valve core. The valve body is provided with multiple valve ports arranged circumferentially along the valve core. The multi-way valve 90 has a first valve port M1, a second valve port M2, a third valve port M3, a fourth valve port M4, a fifth valve port M5, a sixth valve port M6, a seventh valve port M7, an eighth valve port M8, and a ninth valve port M9. One end of the crew compartment water circuit 40 is connected to the first valve port M1, and the other end of the crew compartment water circuit 40 is connected to the second valve port M2. One end of the motor water circuit 30 is connected to the third valve port M3, and the other end of the motor water circuit 30 is connected to the fourth valve port M4. One end of the radiator 33 is connected to the fourth valve port M4, and the other end of the radiator 33 is connected to the fifth valve port M5. One end of the battery water circuit 20 is connected to the sixth valve port M6, and the other end of the battery water circuit 20 is connected to the seventh valve port M7. One end of the battery cooler 13 is connected to the eighth valve port M8, and the other end of the battery cooler 13 is connected to the ninth valve port M9. The seventh valve port M7 and the eighth valve port M8 are the same valve port, or the seventh valve port M7 and the eighth valve port M8 are different valve ports.

[0057] Specifically, the multi-port valve 90 is provided with multiple valve ports, which are arranged around the circumference of the valve core. Different valve ports are connected inside the valve core, or they can be connected outside the valve body through functional modules such as the crew compartment water circuit 40 and the motor water circuit 30. The first valve port M1 to the ninth valve port M9 are arranged clockwise, counterclockwise, or in an irregular order around the circumference of the valve core. When the valve core is rotated to different angles, the thermal management system 100 is in the corresponding working mode, and at least one of the crew compartment water circuit 40, the motor water circuit 30, the radiator 33, the battery water circuit 20, and the battery cooler 13 is working. The multiple ports of the multi-way valve 90 are respectively connected to the corresponding ends of the passenger compartment water circuit 40, motor water circuit 30, radiator 33, battery water circuit 20 and battery cooler 13. Compared with the above-mentioned technical solution that uses multiple five-way valves to connect to the above circuits, on the one hand, it not only reduces the number of valve ports, the number of valves themselves, and the number of components of the thermal management system 100, but also integrates the switching function of multiple working modes. On the other hand, the multi-way valve 90 highly couples the heat of the battery water circuit 20, motor water circuit 30 and passenger compartment water circuit 40, so that the waste heat of the battery water circuit 20 and motor water circuit 30 can heat the passenger compartment water circuit 40, realize heat reuse, improve energy efficiency, reduce energy consumption and improve the energy efficiency of the thermal management system 100.

[0058] This application uses the example of the first valve port M1 to the ninth valve port M9 arranged clockwise for illustration.

[0059] Referring to Figure 7, the multi-way valve 90 in this embodiment is an eight-way valve, wherein the seventh valve port M7 and the eighth valve port M8 are the same valve port.

[0060] Specifically, the multi-way valve 90 has eight valve ports. The seventh valve port M7 and the eighth valve port M8 are the same valve port. For ease of description, the seventh valve port M7 or the eighth valve port M8 will be referred to as the seventh valve port M7 below. The eight-way valve has the following multiple working modes.

[0061] Referring to Figure 9, in the first working mode, the first valve port M1 and the second valve port M2 inside the valve body are connected, so that the crew compartment water circuit 40 is working. At the same time, the third valve port M3 inside the valve body is connected to the ninth valve port M9, the fourth valve port M4 is connected to the sixth valve port M6, and the fifth valve port M5 is also connected to the sixth valve port M6, so that the radiator 33, the motor water circuit 30, the battery water circuit 20 and the battery cooler 13 are all in working condition. The heat from the motor water circuit 30 and the battery water circuit 20 can be used to heat the crew compartment water circuit 40.

[0062] Referring to Figure 10, in the second working mode, the first valve port M1 and the second valve port M2 inside the valve body are connected, so that the crew compartment water circuit 40 is working. At the same time, the third valve port M3 inside the valve body is connected to the seventh valve port M7, the fourth valve port M4 is connected to the sixth valve port M6, and the fifth valve port M5 is also connected to the sixth valve port M6, so that the radiator 33, the motor water circuit 30 and the battery water circuit 20 are all in working state, realizing the heating water pump 42 in the crew compartment water circuit 40 for heating and the battery water circuit 20 for heat dissipation.

[0063] Referring to Figure 11, in the third working mode, the first valve port M1 and the second valve port M2 inside the valve body are connected, so that the crew compartment water circuit 40 is working. At the same time, the third valve port M3 inside the valve body is connected to the seventh valve port M7, and the fourth valve port M4 is connected to the sixth valve port M6, so that the motor water circuit 30 and the battery water circuit 20 are both in working state, realizing the heating of the heating water pump 42 in the crew compartment water circuit 40 and the heating of the motor in stall.

[0064] Referring to Figure 12, in the fourth working mode, the first valve port M1 and the seventh valve port M7 inside the valve body are connected, the second valve port M2 and the third valve port M3 are connected, the fourth valve port M4 and the sixth valve port M6 are connected, and the sixth valve port M6 and the seventh valve port M7 are connected, so that the crew compartment water circuit 40, the motor water circuit 30 and the battery water circuit 20 are in working condition.

[0065] Referring to Figure 13, in the fifth working mode, the first valve port M1 and the second valve port M2 inside the valve body are connected, which enables the crew compartment water circuit 40 to work. The third valve port M3 and the fifth valve port M5 are connected, which enables the motor water circuit 30 and the radiator 33 to work. The sixth valve port M6 and the seventh valve port M7 are connected, which enables the battery water circuit 20 to work, so that the heating water pump 42 in the crew compartment water circuit 40 can provide heating, the battery water circuit 20 can self-circulate, and the motor 31 in the motor water circuit 30 can be cooled.

[0066] Referring to Figure 14, in the sixth working mode, the first valve port M1 and the second valve port M2 inside the valve body are connected, enabling the crew compartment water circuit 40 to work. The third valve port M3 and the fifth valve port M5 are connected, enabling the motor water circuit 30 and the radiator 33 to work. The sixth valve port M6 and the ninth valve port M9 are connected, enabling the battery water circuit 20 and the battery cooler 13 to work. This enables the heating water pump 42 in the crew compartment water circuit 40 to provide heating, the battery water circuit 20 to be cooled by the battery cooler 13, and the motor 31 in the motor water circuit 30 to be cooled.

[0067] Referring to Figure 15, in the seventh working mode, the first valve port M1 and the second valve port M2 inside the valve body are connected, which enables the crew compartment water circuit 40 to work. The third valve port M3 and the fourth valve port M4 are connected, which enables the motor water circuit 30 to work. The sixth valve port M6 and the seventh valve port M7 are connected, which enables the battery water circuit 20 to work. This enables the heating pump 42 in the crew compartment water circuit 40 to provide heating, and also enables the storage of heat generated by the battery in the battery water circuit 20.

[0068] Referring to Figure 16, in the eighth working mode, the first valve port M1 and the seventh valve port M7 inside the valve body are connected, the second valve port M2 and the sixth valve port M6 are connected, the third valve port M3 and the fourth valve port M4 are connected, and the sixth valve port M6 and the seventh valve port M7 are connected, so that the crew compartment water circuit 40, the motor water circuit 30 and the battery water circuit 20 are in working state, realizing the heating water pump 42 in the crew compartment water circuit 40 for heating, the electric heat pump in the battery water circuit 20 for heating, and the self-circulation of the motor water circuit 30.

[0069] Referring to Figure 17, in the ninth working mode, the first valve port M1 and the ninth valve port M9 inside the valve body are connected, the second valve port M2 and the third valve port M3 are connected, and the fifth valve port M5 and the sixth valve port M6 are connected, so that the crew compartment water circuit 40, radiator 33, motor water circuit 30, battery water circuit 20 and battery cooler 13 are in working condition. In this working mode, antifreeze can be added.

[0070] Referring to Figure 18, in the tenth working mode, the first valve port M1 and the seventh valve port M7 inside the valve body are connected, the second valve port M2 and the sixth valve port M6 are connected, the third valve port M3 and the fifth valve port M5 are connected, and the sixth valve port M6 and the seventh valve port M7 are connected, so that the crew compartment water circuit 40, the motor water circuit 30, the radiator 33 and the battery water circuit 20 are in working condition, so that the heating water pump 42 in the crew compartment water circuit 40 can provide heating, the electric heat pump in the battery water circuit 20 can provide heating, and the motor 31 in the motor water circuit 30 can be cooled.

[0071] Referring to Figure 19, in the eleventh working mode, the first valve port M1 and the second valve port M2 inside the valve body are connected, which enables the crew compartment water circuit 40 to work. The third valve port M3 and the fourth valve port M4 are connected, which enables the motor water circuit 30 to work. The sixth valve port M6 and the ninth valve port M9 are connected, which enables the battery water circuit 20 and the battery cooler 13 to work, so that the heating water pump 42 in the crew compartment water circuit 40 can provide heating.

[0072] Referring to Figure 8, the multi-way valve 90 is a nine-way valve, in which the seventh valve port M7 and the eighth valve port M8 are different valve ports.

[0073] Specifically, the multi-port valve 90 has nine valve ports, with the seventh valve port M7 and the eighth valve port M8 being different valve ports. The nine-port valve has the following multiple operating modes.

[0074] Referring to Figure 20, in the first working mode, the first valve port M1 and the second valve port M2 inside the valve body are connected, which makes the crew compartment water circuit 40 work. The third valve port M3 and the ninth valve port M9 inside the valve body are connected, the fourth valve port M4 and the sixth valve port M6 are connected, and the seventh valve port M7 and the eighth valve port M8 are connected, which makes the motor water circuit 30, radiator 33, battery water circuit 20 and battery cooler 13 work, so that the heating water pump 42 in the crew compartment water circuit 40 can provide heating, while the crew compartment absorbs the heat from the motor water circuit 30 and the battery water circuit 20.

[0075] Referring to Figure 21, in the second working mode, the first valve port M1 and the second valve port M2 inside the valve body are connected, which enables the crew compartment water circuit 40 to work. The third valve port M3 and the seventh valve port M7 inside the valve body are connected, the fifth valve port M5 and the sixth valve port M6 are connected, and the eighth valve port M8 and the ninth valve port M9 are connected, which enables the motor water circuit 30, the radiator 33, the battery water circuit 20 and the battery cooler 13 to work, so that the heating water pump 42 in the crew compartment water circuit 40 can provide heating and the battery 21 in the battery water circuit 20 can be cooled.

[0076] Referring to Figure 22, in the third working mode, the first valve port M1 and the second valve port M2 inside the valve body are connected, which enables the crew compartment water circuit 40 to work. The third valve port M3 and the seventh valve port M7 inside the valve body are connected, the fourth valve port M4 and the sixth valve port M6 are connected, and the eighth valve port M8 and the ninth valve port M9 are connected, which enables the motor water circuit 30, the battery water circuit 20 and the battery cooler 13 to work, so as to realize the heating water pump 42 in the crew compartment water circuit 40 for heating and the motor stall heating.

[0077] Referring to Figure 23, in the fourth working mode, the first valve port M1 of the valve body is connected to the seventh valve port M7, the second valve port M2 is connected to the third valve port M3, the fourth valve port M4 is connected to the sixth valve port M6, the sixth valve port M6 is connected to the seventh valve port M7, and the eighth valve port M8 is connected to the ninth valve port M9, so that the crew compartment water circuit 40, the motor water circuit 30, the radiator 33, the battery water circuit 20 and the battery cooler 13 are working.

[0078] Referring to Figure 24, in the fifth working mode, the first valve port M1 of the valve body is connected to the second valve port M2, the third valve port M3 is connected to the fifth valve port M5, the sixth valve port M6 is connected to the seventh valve port M7, and the eighth valve port M8 is connected to the ninth valve port M9. This enables the crew compartment water circuit 40, the motor water circuit 30, the radiator 33, the battery water circuit 20, and the battery cooler 13 to operate, thereby enabling the heating water pump 42 in the crew compartment water circuit 40 to provide heating, the battery water circuit 20 to self-circulate, and the motor water circuit 30 to be cooled.

[0079] Referring to Figure 25, in the sixth working mode, the first valve port M1 of the valve body is connected to the second valve port M2, the third valve port M3 is connected to the fifth valve port M5, the sixth valve port M6 is connected to the ninth valve port M9, and the seventh valve port M7 is connected to the eighth valve port M8. This enables the crew compartment water circuit 40, the motor water circuit 30, the radiator 33, the battery water circuit 20, and the battery cooler 13 to operate, thereby enabling the heating water pump 42 in the crew compartment water circuit 40 to provide heating, the battery cooler 13 to cool the battery water circuit 20, and the motor water circuit 30.

[0080] Referring to Figure 26, in the seventh working mode, the first valve port M1 of the valve body is connected to the second valve port M2, the third valve port M3 is connected to the fourth valve port M4, the sixth valve port M6 is connected to the seventh valve port M7, and the eighth valve port M8 is connected to the ninth valve port M9. This enables the crew compartment water circuit 40, the motor water circuit 30, the battery water circuit 20, and the battery cooler 13 to operate, thereby enabling the heating water pump 42 in the crew compartment water circuit 40 to provide heating and storing the heat generated by the battery in the battery water circuit 20.

[0081] Referring to Figure 27, in the eighth working mode, the first valve port M1 of the valve body is connected to the seventh valve port M7, the second valve port M2 is connected to the sixth valve port M6, the third valve port M3 is connected to the fourth valve port M4, the sixth valve port M6 is connected to the seventh valve port M7, and the eighth valve port M8 is connected to the ninth valve port M9. This enables the crew compartment water circuit 40, the motor water circuit 30, the battery water circuit 20, and the battery cooler 13 to operate, thereby enabling the heating water pump 42 in the crew compartment water circuit 40 to provide heating, the electric heat pump in the battery water circuit 20 to provide heating, and the motor water circuit 30 to self-circulate.

[0082] Referring to Figure 28, in the ninth working mode, the first valve port M1 of the valve body is connected to the ninth valve port M9, the second valve port M2 is connected to the third valve port M3, the fifth valve port M5 is connected to the sixth valve port M6, and the seventh valve port M7 is connected to the eighth valve port M8, so that the crew compartment water circuit 40, the motor water circuit 30, the radiator 33, the battery water circuit 20 and the battery cooler 13 can be operated. In this working mode, antifreeze can be added.

[0083] Referring to Figure 29, in the tenth working mode, the first valve port M1 of the valve body is connected to the second valve port M2, the third valve port M3 is connected to the ninth valve port M9, the fourth valve port M4 is connected to the eighth valve port M8, the fifth valve port M5 is connected to the eighth valve port M8, and the sixth valve port M6 is connected to the seventh valve port M7. This enables the crew compartment water circuit 40, the motor water circuit 30, the radiator 33, the battery water circuit 20, and the battery cooler 13 to work, so that the heating water pump 42 in the crew compartment water circuit 40 can provide heating, and at the same time, the heat generated by the motor water circuit 30 can heat the crew compartment water circuit 40.

[0084] Referring to Figure 30, in the eleventh working mode, the first valve port M1 of the valve body is connected to the seventh valve port M7, the second valve port M2 is connected to the sixth valve port M6, the third valve port M3 is connected to the fifth valve port M5, the sixth valve port M6 is connected to the seventh valve port M7, and the eighth valve port M8 is connected to the ninth valve port M9. This enables the crew compartment water circuit 40, the motor water circuit 30, the battery water circuit 20, and the battery cooler 13 to operate, thereby enabling the heating water pump 42 in the crew compartment water circuit 40 to provide heating, the electric heat pump in the battery water circuit 20 to provide heating, and the motor water circuit 30 to be cooled.

[0085] Referring to Figure 31, the crew compartment water circuit 40 includes a first heat exchanger 12, a heater core 41, and a heating water pump 42 connected in sequence. The first heat exchanger 12 is connected to a first valve port M1, and the heating water pump 42 is connected to a second valve port M2. The first heat exchanger 12, the heater core 41, and the heating water pump 42 are connected in sequence to form the crew compartment water circuit, and the heater core 41 is used for heating the crew compartment.

[0086] Referring again to Figure 31, the passenger compartment water circuit 40 also includes a water heater 43. The inlet of the water heater 43 is connected to the first heat exchanger 12, and the outlet of the water heater 43 is connected to the heater core 41. In other words, the passenger compartment water circuit 40 also includes a water heater 43. The water heater 43, the first heat exchanger 12, the heater core 41, and the heating water pump 42 are connected in sequence to form the passenger compartment water circuit. The water heater 43 has a positive temperature coefficient characteristic. The higher the temperature, the greater its resistance value. When energized, it will quickly heat up and reach its working temperature, and start to generate heat efficiently, thereby significantly shortening the waiting time for the temperature inside the vehicle to rise in winter and improving passenger comfort.

[0087] In another embodiment, the water heater 43 is used in the motor water circuit 30, and can serve as a reliable independent or supplementary heat source during the initial cold start of the motor or when the ambient temperature is extremely low.

[0088] Referring to Figure 31, the thermal management system 100 includes a gas-liquid separator 15 and a compressor 11, and the first heat exchanger 12, the battery cooler 13, the gas-liquid separator 15 and the compressor 11 are connected in sequence. The outlet of the compressor 11 is connected to the first refrigerant port 121 of the first heat exchanger 12.

[0089] Referring to Figure 32, the thermal management system 100 also includes a second heat exchanger 14 and a temperature sensor 191. The first port 141 of the second heat exchanger 14 is connected to the first refrigerant port 121 of the first heat exchanger 12, and the second port 142 of the second heat exchanger 14 is connected to the first refrigerant port 121 of the first heat exchanger 12. The temperature sensor 191 is connected to the first port 141 of the second heat exchanger 14. The temperature sensor 191 detects the temperature of the first port 141 of the second heat exchanger 14, thereby improving the control accuracy of the electronic valve 193 located on the side of the second heat exchanger 14.

[0090] Furthermore, one end of the electronic valve 193 is connected to the second refrigerant port 122 of the first heat exchanger 12 and the second port 142 of the second heat exchanger 14, respectively, and the other end of the electronic valve 193 is connected to the first refrigerant port 121 of the first heat exchanger 12 and the first port 141 of the second heat exchanger 14, respectively. The temperature sensor 191 improves the control accuracy of the electronic valve 193.

[0091] Referring again to Figure 32, the thermal management system 100 also includes a liquid storage tank 192, which is connected to the second port 142 of the second heat exchanger 14 and the second refrigerant port 122 of the first heat exchanger 12. By setting the liquid storage tank 192 in the high-pressure circuit, the liquid generated in the first sub-refrigerant circuit 19a and the branch of the second heat exchanger 14 is stored.

[0092] In another embodiment, a gas-liquid separator 15 can be provided at the inlet of the compressor 11 to separate the gas and liquid refrigerant, instead of providing a liquid storage tank 192.

[0093] Referring to Figure 33, the thermal management system 100 includes a gas-liquid separator 15 and a compressor 11. The battery cooler 13, the gas-liquid separator 15 and the compressor 11 are connected in sequence. The outlet of the compressor 11 is connected to the third refrigerant port 131 of the battery cooler 13.

[0094] Specifically, the battery cooler 13, the gas-liquid separator 15, and the compressor 11 are connected in sequence to form a second sub-refrigerant circuit 19b, so that the refrigerants from the first sub-refrigerant circuit 19a and the second sub-refrigerant circuit 19b both enter the battery cooler 13 for mixing, thereby improving cooling efficiency.

[0095] This application provides a vehicle. Referring to Figure 34, the vehicle 1000 includes the thermal management system 100 described above. The vehicle 1000 can be a sedan, RV, bus, etc. The thermal management system 100 couples the battery water circuit 20, the motor water circuit 30, and the passenger compartment water circuit 40 to achieve comprehensive heat management of multiple modules, thereby reducing the energy consumption of the vehicle 1000 and improving its range. Other structural details of the vehicle 1000 are not described further.

[0096] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this application.

Claims

1. A thermal management system, comprising: The refrigerant circuit includes a compressor, a first heat exchanger, and a battery cooler, wherein the first heat exchanger and the battery cooler are connected to the compressor to form multiple sub-refrigerant circuits; A battery water circuit is used to regulate the temperature of the battery. The battery water circuit includes multiple battery sub-water circuits, one of which is connected to the battery cooler. The motor water circuit is used to regulate the temperature of the motor, and the motor water circuit includes multiple motor sub-water circuits; The crew compartment water circuit is used for heating the crew compartment and is connected to the first heat exchanger. A control valve module is connected between each of the battery sub-water circuits, each of the motor sub-water circuits, and the crew compartment water circuit; The control valve module is configured to selectively connect each of the battery sub-water circuits, each of the motor sub-water circuits, and the crew compartment water circuit, so that heat exchange can selectively occur between each of the sub-refrigerant circuits, each of the battery sub-water circuits, each of the motor sub-water circuits, and the crew compartment water circuit.

2. The thermal management system of claim 1, wherein, The control valve module includes: The first control valve assembly is connected between each of the battery sub-water circuits and the crew compartment water circuit; The second control valve assembly is connected between each of the battery sub-water circuits and each of the motor sub-water circuits; The first control valve assembly is configured to selectively connect each of the battery sub-water circuits to the crew compartment water circuit, and the second control valve assembly is configured to selectively connect each of the battery sub-water circuits to the motor sub-water circuits, so that heat exchange can selectively occur between each of the refrigerant sub-circuits, each of the battery sub-water circuits, each of the motor sub-water circuits, and the crew compartment water circuit.

3. The thermal management system of claim 2, wherein, The refrigerant circuit includes at least four sub-refrigerant circuits, the battery water circuit includes two battery sub-water circuits, and the motor water circuit includes two motor sub-water circuits.

4. The thermal management system of claim 3, wherein, The battery water circuit includes a battery and a battery water pump; The battery, the battery water pump, the first control valve assembly, the second control valve assembly, and the battery cooler are connected to form a first battery sub-water circuit; The battery, the battery water pump, the first control valve assembly, and the second control valve assembly are connected to form a second battery sub-water circuit.

5. The thermal management system of claim 4, wherein, The motor water circuit includes a motor, a motor water pump, and a radiator. The motor, the motor water pump, the second control valve assembly, and the radiator are connected to form a first motor sub-water circuit, and the radiator is used to dissipate the heat in the first motor sub-water circuit to the air. The motor, the motor water pump, and the second control valve assembly are connected to form a second motor sub-water circuit.

6. The thermal management system of claim 5, wherein, The refrigerant circuit also includes a second heat exchanger, a gas-liquid separator, and at least one evaporator, wherein the second heat exchanger is used to exchange heat with air, and each of the evaporators is disposed in the crew compartment; The second heat exchanger, the compressor and the gas-liquid separator are respectively communicated with each of the evaporators to form at least one first sub-refrigerant circuit, and each of the first sub-refrigerant circuits is used for refrigeration of the passenger cabin; The second heat exchanger, the compressor, the gas-liquid separator and the battery cooler are communicated to form a second sub-refrigerant circuit, and the second sub-refrigerant circuit can absorb heat in the first battery sub-water circuit through the battery cooler; The second heat exchanger, the compressor, the gas-liquid separator and the first heat exchanger are communicated to form a third sub-refrigerant circuit, and the third sub-refrigerant circuit can release heat to the passenger cabin water circuit through the first heat exchanger; The first heat exchanger, the compressor, the gas-liquid separator and the battery cooler are communicated to form a fourth sub-refrigerant circuit, and the fourth sub-refrigerant circuit can absorb heat in the first battery sub-water circuit and the second motor sub-water circuit through the battery cooler, and the fourth sub-refrigerant circuit can release heat to the passenger cabin water circuit through the first heat exchanger.

7. The thermal management system of claim 6, wherein, The first control valve assembly includes a five-way water valve, and the first control valve assembly has a first control valve first end, a first control valve second end, a first control valve third end, a first control valve fourth end and a first control valve fifth end; One of the water inlet end and the water outlet end of the first battery sub-water circuit is connected to the first control valve second end and the first control valve fifth end of the first control valve assembly respectively, one of the water inlet end and the water outlet end of the second battery sub-water circuit is connected to the first control valve second end and the first control valve first end of the first control valve assembly respectively, and the water inlet end and the water outlet end of the passenger cabin water circuit are connected to the first control valve fourth end and the first control valve third end of the first control valve assembly respectively.

8. The thermal management system of claim 7, wherein, The second control valve assembly includes a five-way water valve, and the second control valve assembly has a first control valve first end, a first control valve second end, a first control valve third end, a first control valve fourth end and a first control valve fifth end; The other water inlet end and the other water outlet end of the first battery sub-water circuit are connected to the first control valve fourth end and the first control valve third end of the second control valve assembly respectively, and the other water inlet end and the other water outlet end of the second battery sub-water circuit are also connected to the first control valve fourth end and the first control valve third end of the second control valve assembly respectively; The water inlet end and the water outlet end of the first motor sub-water circuit are connected to the first control valve second end and the first control valve fifth end of the second control valve assembly respectively, and the water inlet end and the water outlet end of the second motor sub-water circuit are connected to the first control valve second end and the first control valve first end of the second control valve assembly respectively.

9. The thermal management system of claim 1, wherein, The thermal management system includes an expansion water tank, and the battery water circuit, the motor water circuit and the passenger cabin water circuit are communicated with the expansion water tank; The refrigerant circuit further includes: An electronic expansion valve for controlling the flow and pressure of refrigerant in each of the sub-refrigerant circuits. Solenoid valves are used to control the on / off state of each of the sub-refrigerant circuits or to change the flow direction of refrigerant in the circuit, so as to selectively control the sub-refrigerant circuits to be in the working state.

10. The thermal management system of claim 1, wherein, The refrigerant circuit includes a second heat exchanger, a gas-liquid separator, and two evaporators. The two evaporators are respectively located in the front and rear areas of the passenger compartment. The second heat exchanger, the compressor, and the gas-liquid separator are respectively connected to the two evaporators to form two first sub-refrigerant circuits. The two first sub-refrigerant circuits are respectively used for cooling the front and rear areas of the passenger compartment. The crew compartment water circuit includes a heater core and a heating water pump. The heater core is located in the crew compartment, and the heater core, the heating water pump, and the first heat exchanger are connected to form the crew compartment water circuit. The heater core is used for heating the crew compartment; or... The heating element is located in the front area of ​​the passenger compartment, and the thermal management system also includes a heater located in the rear area of ​​the passenger compartment. Both the heating element and the heater are used for heating the passenger compartment.

11. The thermal management system according to claim 1, wherein, The control valve module includes a multi-way valve, which includes a valve body and a valve core. The valve body has eight valve ports arranged circumferentially along the valve core. The multi-way valve has a first valve port, a second valve port, a third valve port, a fourth valve port, a fifth valve port, a sixth valve port, a seventh valve port, an eighth valve port, and a ninth valve port. One end of the crew compartment water circuit is connected to the first valve port, and the other end is connected to the second valve port; One end of the motor water circuit is connected to the third valve port, and the other end is connected to the fourth valve port; A radiator, one end of which is connected to the fourth valve port and the other end of which is connected to the fifth valve port; One end of the battery water circuit is connected to the sixth valve port, and the other end is connected to the seventh valve port; One end of the battery cooler is connected to the eighth valve port, and the other end is connected to the ninth valve port. The seventh valve port and the eighth valve port are the same valve port, or the seventh valve port and the eighth valve port are different valve ports.

12. The thermal management system of claim 11, wherein, The multi-way valve is an eight-way valve, wherein the seventh valve port and the eighth valve port are the same valve port.

13. The thermal management system of claim 11, wherein, The multi-way valve is a nine-way valve, wherein the seventh valve port and the eighth valve port are different valve ports.

14. The thermal management system of claim 12 or 13, wherein, The crew cabin water circuit includes a first heat exchanger, a heater core, and a heating water pump connected in sequence, wherein the first heat exchanger is connected to the first valve port, and the heating water pump is connected to the second valve port.

15. The thermal management system of claim 14, wherein, The crew compartment water circuit also includes a water heater, the inlet of which is connected to the first heat exchanger, and the outlet of which is connected to the warm air core.

16. The thermal management system of claim 15, wherein, The thermal management system includes a gas-liquid separator and a compressor. The first heat exchanger, the battery cooler, the gas-liquid separator and the compressor are connected in sequence. The outlet of the compressor is connected to the first refrigerant port of the first heat exchanger.

17. The thermal management system of claim 14, wherein, The thermal management system further includes a second heat exchanger and a temperature sensor. The first port of the second heat exchanger is connected to the first refrigerant port of the first heat exchanger, the second port of the second heat exchanger is connected to the second refrigerant port of the first heat exchanger, and the temperature sensor is connected to the first port of the second heat exchanger.

18. The thermal management system of claim 17, wherein, The thermal management system further includes a liquid storage tank, which is connected to the second port of the second heat exchanger and to the second refrigerant port of the first heat exchanger.

19. The thermal management system of claim 12 or 13, wherein, The thermal management system includes a gas-liquid separator and a compressor. The battery cooler, the gas-liquid separator and the compressor are connected in sequence. The outlet of the compressor is connected to the third refrigerant port of the battery cooler.

20. A vehicle, wherein, Including the thermal management system as described in any one of claims 1-19.

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