Thermal management system and vehicle

Abstract

The application discloses a thermal management system and a vehicle, and belongs to the technical field of vehicles. The thermal management system comprises: a first control valve assembly connected between each battery sub-water circuit and a passenger cabin water circuit; and a second control valve assembly connected between each battery sub-water circuit and each motor sub-water circuit; wherein the first control valve assembly is configured to control the selective communication between each battery sub-water circuit and the passenger cabin water circuit, and the second control valve assembly is configured to control the selective communication between each battery sub-water circuit and each motor sub-water circuit, so that the selective heat exchange between each sub-refrigerant circuit, each battery sub-water circuit, each motor sub-water circuit and the passenger cabin water circuit can be realized. The thermal management system provided by the application couples the battery water circuit, the motor water circuit and the passenger cabin water circuit, realizes the comprehensive management of the heat of multiple modules, further reduces the energy consumption of the vehicle and improves the endurance of the vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a thermal management system and a vehicle device. BACKGROUND

[0002] The vehicle includes a battery and a motor, the battery provides power for the vehicle, and the motor is used to drive the vehicle to travel. The battery (motor) generates heat when working, and the battery (motor) needs to be cooled; or when the external environment temperature is lower than the normal working temperature of the battery (motor), the battery (motor) needs to be kept warm, so it is necessary to manage the heat of the battery and the motor. The vehicle is also provided with an air conditioner, which is used for refrigeration or heating of the passenger compartment, and the passenger compartment also needs to be managed. In the related art, the thermal management system includes three subsystems of passenger compartment thermal management, battery thermal management and motor thermal management, each subsystem is relatively independent, which makes it difficult to realize comprehensive management of heat, the energy consumption of the vehicle is high, and the endurance of the vehicle is affected. SUMMARY

[0003] The present application provides a thermal management system and a vehicle, which can solve the technical problem of high energy consumption affecting the endurance of the vehicle.

[0004] To solve the above technical problem, the present application provides a thermal management system, comprising: a refrigerant circuit, comprising a compressor, a first heat exchanger and a heat absorber, the first heat exchanger and the heat absorber being in communication with the compressor to form a plurality of sub-refrigerant circuits; a battery water circuit for adjusting the temperature of the battery, the battery water circuit comprising a plurality of battery sub-water circuits, one of which is in communication with the heat absorber; a motor water circuit for adjusting the temperature of the motor, the motor water circuit comprising a plurality of motor sub-water circuits; a passenger compartment water circuit for heating the passenger compartment, the passenger compartment water circuit being in communication with the first heat exchanger; a first control valve assembly connected between each battery sub-water circuit and the passenger compartment water circuit; a second control valve assembly connected between each battery sub-water circuit and each motor sub-water circuit; wherein the first control valve assembly is configured to selectively communicate each battery sub-water circuit with the passenger compartment water circuit, and the second control valve assembly is configured to selectively communicate each battery sub-water circuit with each motor sub-water circuit, so that the plurality of sub-refrigerant circuits, the plurality of battery sub-water circuits, the plurality of motor sub-water circuits and the passenger compartment water circuit can selectively exchange heat.

[0005] The present application provides a vehicle, comprising the thermal management system as described above.

[0006] The heat management system provided by the application, firstly, the refrigerant circuit includes multiple sub-refrigerant circuits, the battery water circuit includes multiple battery sub-water circuits, and the motor water circuit includes multiple motor sub-water circuits, so that the refrigerant circuit, the battery water circuit and the motor water circuit all have multiple selectable heat management modes, so as to select the corresponding mode as needed, realize fine management of the heat of the vehicle, and reduce the energy consumption of the vehicle; secondly, the heat management system includes a first control valve assembly and a second control valve assembly, the first control valve assembly can control the selective communication of each battery sub-water circuit with the passenger compartment water circuit, and the second control valve assembly can control the selective communication of each battery sub-water circuit with each motor sub-water circuit, so that the heat exchange between each sub-refrigerant circuit, each battery sub-water circuit, each motor sub-water circuit and the passenger compartment water circuit can be selected, so as to couple the battery water circuit, the motor water circuit and the passenger compartment water circuit, realize comprehensive management of the heat of multiple modules, further reduce the energy consumption of the vehicle, and improve the endurance of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0008] Figure 1 is a structural schematic diagram of an embodiment of the heat management system provided by the application;

[0009] Figure 2 is a structural schematic diagram of another embodiment of the heat management system provided by the application;

[0010] Figure 3 is a circulation state schematic diagram of a first sub-refrigerant circuit in an embodiment of the heat management system provided by the application;

[0011] Figure 4 is a circulation state schematic diagram of a second sub-refrigerant circuit in an embodiment of the heat management system provided by the application;

[0012] Figure 5 is a circulation state schematic diagram of a third sub-refrigerant circuit in an embodiment of the heat management system provided by the application;

[0013] Figure 6 is a circulation state schematic diagram of a fourth sub-refrigerant circuit in an embodiment of the heat management system provided by the application;

[0014] Figure 7 is a frame schematic diagram of an embodiment of the vehicle provided by the application. DETAILED DESCRIPTION

[0015] The present application is further described in detail by way of reference only to the following examples. It is expressly understood that the following examples are only by way of illustration and are thus not intended to limit the scope of the application. Similarly, the examples are not intended to restrict the scope of the application in any way. Rather, the examples provide a description of certain embodiments of the application consistent with the scope of the present application.

[0016] In the description of the present application, "a plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined. The terms "first", "second", "third", etc., in the embodiments of the present application are used only to describe various features, and do not indicate or imply relative importance or a number of the indicated technical features. Thus, features limited by "first", "second", "third" can explicitly or implicitly include at least one of the features. All directional indications (such as upper, lower, left, right, front, back, etc.) in the embodiments of the present application are intended to facilitate the understanding of relative positions between components, movement conditions, etc., and are not intended to limit the position and movement of the components. The terms "comprise", "have" and "include" and any variations thereof in the embodiments of the present application are intended to cover not exclusive inclusion. For example, processes, methods, systems, products or devices that include a series of steps or units are not limited to the listed steps or units, but can optionally include other steps or units not listed, or can optionally include other steps or components inherent to the processes, methods, products or devices.

[0017] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that the embodiments described herein are merely possible embodiments of the application and are not a limitation on the scope of the application.

[0018] The present application provides a thermal management system. Please refer to Figure 1, the thermal management system 100 can include a refrigerant circuit 10, a battery water circuit 20, a motor water circuit 30, a passenger cabin water circuit 40, a first control valve assembly 50, and a second control valve assembly 60. The refrigerant circuit 10 can realize heat absorption or heat release through the change of the state of the refrigerant. The refrigerant circuit 10 includes a compressor 11, a first heat exchanger 12, and a heat absorber 13. The compressor 11 can change the state of the refrigerant by doing work, and the state of the refrigerant changes with heat absorption or heat release, so that the heat of the passenger cabin, the battery, or the motor can be absorbed, or the heat is released to the passenger cabin, the battery, or the motor, to adjust the temperature of the passenger cabin, the battery, or the motor. The first heat exchanger 12 is used for heat exchange with the passenger cabin water circuit 40. The first heat exchanger 12 can be a plate heat exchanger. The heat absorber 13 is used for heat exchange with the battery water circuit 20. The heat absorber 13 can be a chiller. The first heat exchanger 12 and the heat absorber 13 are in communication with the compressor 11 to form a plurality of sub-refrigerant circuits 19. The number of sub-refrigerant circuits 19 can be two, three, four, or more. The more the number of sub-refrigerant circuits 19, the more the optional thermal management modes of the refrigerant circuit 10. The refrigerant circuit 10 is provided with a plurality of sub-refrigerant circuits 19, so that the refrigerant circuit 10 has a plurality of optional thermal management modes, so as to select the corresponding mode as needed, to realize fine management of the heat of the vehicle, thereby reducing the energy consumption of the vehicle.

[0019] 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 adjust the temperature of the battery 21. The battery water pump 22 pressurizes the water when working, so that the water circulates in the battery water circuit 20. The battery water circuit 20 takes away the heat generated by the battery 21 when working through water circulation, to cool the battery 21; or, when the ambient temperature is low, the battery water circuit 20 releases heat to the battery 21 through water circulation, to heat the battery 21, which can ensure the normal work of the battery 21 at low temperature, or improve the endurance of the battery 21. The battery water circuit 20 includes a plurality of battery sub-water circuits 23. The number of battery sub-water circuits 23 can be two, three, or more. The more the number of battery sub-water circuits 23, the more the optional thermal management modes of the battery water circuit 20. The battery water circuit 20 is provided with a plurality of battery sub-water circuits 23, so that the battery water circuit 20 has a plurality of optional thermal management modes, so as to select the corresponding mode as needed, to realize fine management of the heat of the vehicle, thereby reducing the energy consumption of the vehicle. One of the battery sub-water circuits 23 is in communication with the heat absorber 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.

[0020] The motor water circuit 30 includes a motor 31 and a motor water pump 32, as shown in Figure 1The motor water circuit 30 is used to adjust the temperature of the motor 31 to achieve cooling or heat preservation of the motor 31. The motor water pump 32 pressurizes the water when working, so that the water circulates in the motor water circuit 30. The motor water circuit 30 includes a plurality of motor sub-water circuits 34. The motor sub-water circuit 34 can be two, three or more. The more the number of motor sub-water circuits 34, the more the optional heat management modes of the motor water circuit 30. The motor water circuit 30 is provided with a plurality of motor sub-water circuits 34, so that the motor water circuit 30 has a plurality of optional heat management modes, so as to select the corresponding mode as needed, to achieve fine management of the heat of the vehicle, thereby reducing the energy consumption of the vehicle. The passenger compartment water circuit 40 is used for heating the passenger compartment. The passenger compartment water circuit 40 is in communication with the first heat exchanger 12, so that the refrigerant circuit 10 can exchange heat with the passenger compartment water circuit 40 to release heat to the passenger compartment water circuit 40.

[0021] Please refer to Figure 1 The first control valve assembly 50 is connected between each battery sub-water circuit 23 and the passenger 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. Among them, the first control valve assembly 50 is configured to selectively communicate each battery sub-water circuit 23 and the passenger compartment water circuit 40, and the second control valve assembly 60 is configured to selectively communicate each battery sub-water circuit 23 and each motor sub-water circuit 34, so that each sub-refrigerant circuit 19, each battery sub-water circuit 23, each motor sub-water circuit 34 and the passenger compartment water circuit 40 can selectively exchange heat. For example, the second control valve assembly 60 controls one of the battery sub-water circuits 23 to communicate 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 communicated with the heat absorber 13 to be conducted, 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 generated by the motor 31 and the battery 21 during operation is used for heating the passenger compartment, realizing the comprehensive management of heat, which can reduce the power consumption of the compressor 11 during the heating of the passenger compartment, thereby reducing the energy consumption of the vehicle. For another example, the motor water circuit 30 is provided with one motor sub-water circuit 34 for heat dissipation to the outside, and the second control valve assembly 60 controls one of the battery sub-water circuits 23 to communicate 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 the comprehensive management of heat, and the battery 21 does not need the compressor 11 to work during heat dissipation, which can reduce the power consumption of the compressor 11 during the heat dissipation of the battery 21, thereby reducing the energy consumption of the vehicle.

[0022] The heat management system 100 provided in the present application, firstly, the refrigerant circuit 10 comprises a plurality of sub-refrigerant circuits 19, the battery water circuit 20 comprises a plurality of battery sub-water circuits 23, and the motor water circuit 30 comprises a plurality of motor sub-water circuits 34, so that the refrigerant circuit 10, the battery water circuit 20 and the motor water circuit 30 all have a plurality of optional heat management modes, so as to select the corresponding mode as needed, realize the fine management of the heat of the vehicle, and thus reduce the energy consumption of the vehicle; secondly, the first control valve assembly 50 can control the selective communication of each battery sub-water circuit 23 with the passenger compartment water circuit 40, and the second control valve assembly 60 can control the selective communication of each battery sub-water circuit 23 with each motor sub-water circuit 34, so that the heat exchange 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 can be selectively performed, so as to couple the battery water circuit 20, the motor water circuit 30 and the passenger compartment water circuit 40, realize the comprehensive management of the heat of multiple modules, further reduce the energy consumption of the vehicle, and improve the endurance of the vehicle.

[0023] In an embodiment, as shown in Figure 2 The refrigerant circuit 10 comprises at least four sub-refrigerant circuits 19, the battery water circuit 20 comprises two battery sub-water circuits 23, and the motor water circuit 30 comprises two motor sub-water circuits 34. In this way, 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 neither too small, nor too large, so that the refrigerant circuit 10, the battery water circuit 20 and the motor water circuit 30 all have certain optional heat management modes, so as to select the corresponding mode as needed, realize the fine management of the heat of the vehicle, and thus reduce the energy consumption of the vehicle; on the other hand, the number of sub-refrigerant circuits 19, battery sub-water circuits 23 and motor sub-water circuits 34 is neither too small, nor too large, which is beneficial to reduce the complexity of the water circuit.

[0024] Please refer to Figure 2In an embodiment, the battery 21, the battery water pump 22, the first control valve assembly 50, the second control valve assembly 60, and the heat sink 13 are connected to form a first battery sub-water circuit 23a. The connection of the battery 21 to other components means that the pipeline arranged by the battery 21 is connected to the pipeline of other components. The first battery sub-water circuit 23a can exchange heat with the sub-refrigerant circuit 19 through the heat sink 13, so as to couple the battery water circuit 20 and the motor water circuit 30 with the refrigerant circuit 10, and realize comprehensive management of heat of multiple modules. The battery 21, the battery water pump 22, the first control valve assembly 50, and the second control valve assembly 60 are connected to form a second battery sub-water circuit 23b. The second battery sub-water circuit 23b is arranged with the first control valve assembly 50 and the second control valve assembly 60. Since the first control valve assembly 50 is connected between each battery sub-water circuit 23 and the passenger 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 passenger compartment water circuit 40, and realize comprehensive management of heat of multiple modules.

[0025] Please refer to Figure 2 In an embodiment, the motor water circuit 30 includes the motor 31, the motor water pump 32, and the radiator 33. The motor 31, the motor water pump 32, the second control valve assembly 60, and the radiator 33 are connected to form a first motor sub-water circuit 34a, and the radiator 33 is used to dissipate heat in the first motor sub-water circuit 34a to air. The connection of the motor 31 to other components means that the pipeline arranged by the motor 31 is connected to the pipeline of other components. The first motor sub-water circuit 34a can exchange heat with air through the radiator 33, dissipate heat generated by the motor 31 during operation to air, and realize cooling of the motor 31. Since the motor 31 does not need to work by the compressor 11 for heat dissipation, the power consumption of the compressor 11 during heat dissipation of the motor 31 can be reduced, so as to reduce the energy consumption of the vehicle. The motor 31, the motor water pump 32, and the 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 communicate with the second battery sub-water circuit 23b, the first control valve assembly 50 controls the second battery sub-water circuit 23b to communicate with the passenger compartment water circuit 40, and the passenger compartment water circuit 40 communicates with the first heat exchanger 12, so that the refrigerant circuit 10 can release heat to the passenger compartment, the battery 21, and the motor 31 through the first heat exchanger 12 at the same time, thereby realizing heat preservation of the motor 31 and the battery 21.

[0026] In an embodiment, as Figure 3As shown, the refrigerant circuit 10 further comprises a second heat exchanger 14, a gas-liquid separator 15, and at least one evaporator 16. The second heat exchanger 14 is configured to exchange heat with air. For example, in a cooling mode, the second heat exchanger 14 can release heat to air; for another example, in a heating mode, the second heat exchanger 14 can absorb heat from air. The gas-liquid separator 15 is configured to separate liquid refrigerant and gas refrigerant, and separate the liquid and the gas, which can prevent liquid from entering the compressor 11, avoid liquid hammer phenomenon, and thus ensure normal operation of the compressor 11 and prevent overloading operation or damage of the compressor 11. Each evaporator 16 is arranged in the passenger cabin. The evaporator 16 is configured to cool the passenger cabin. The number of the evaporators 16 can be one or two. The second heat exchanger 14, the compressor 11, and the gas-liquid separator 15 are in communication with each evaporator 16 to form at least one first sub-refrigerant circuit 19a, and each first sub-refrigerant circuit 19a is configured to cool the passenger cabin.

[0027] Referring to Figure 4 , the second heat exchanger 14, the compressor 11, the gas-liquid separator 15, and the heat absorber 13 are in communication to form a second sub-refrigerant circuit 19b, and the second sub-refrigerant circuit 19b can absorb heat from the first battery sub-water circuit 23a through the heat absorber 13. The second sub-refrigerant circuit 19b can be configured to cool the battery 21. When the first battery sub-water circuit 23a is in communication with the second motor sub-water circuit 34b, the second sub-refrigerant circuit 19b can also absorb heat from the first battery sub-water circuit 23a and the second motor sub-water circuit 34b through the heat absorber 13, and at this time, the second sub-refrigerant circuit 19b can be configured to cool the battery 21 and the motor 31.

[0028] Referring to Figure 5 , the second heat exchanger 14, the compressor 11, the gas-liquid separator 15, and the first heat exchanger 12 are in communication to form a third sub-refrigerant circuit 19c, and the third sub-refrigerant circuit 19c can release heat to the passenger cabin water circuit 40 through the first heat exchanger 12. The third sub-refrigerant circuit 19c can be configured to heat the passenger cabin, and at this time, the heat is derived from the heat absorbed by the second heat exchanger 14 from air. When the second battery sub-water circuit 23b and the second motor sub-water circuit 34b are in communication with the passenger cabin water circuit 40, the third sub-refrigerant circuit 19c can also release heat to the passenger cabin 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.

[0029] Referring to Figure 6The first heat exchanger 12, compressor 11, gas-liquid separator 15, and absorber 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 water circuit 33b through the absorber 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.

[0030] The first control valve assembly 50 may include a plurality of one-way water valves, three-way water valves, or four-way water valves. Or, as... Figure 2 As shown, the first control valve assembly 50 includes a five-way water valve, and has a first end 51, a second end 52, a third end 53, a fourth end 54, and a fifth end 55. One inlet and one outlet of the first battery sub-water circuit 23a are respectively connected to the second end 52 and the 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 second end 52 and the 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 fourth end 54 and the third end 53 of the first control valve assembly 50. The inclusion of a five-way water valve in the first control valve assembly 50, with five ports, satisfies the connection requirements of the battery sub-water circuit 23 and the crew compartment water circuit 40, reduces the number of control valves, and simplifies the structure of the thermal management system 100. In addition, one of the water inlet terminals of the first battery sub-water circuit 23a and one of the water inlet terminals of the second battery sub-water circuit 23b share the second terminal 52, thereby merging some pipelines and simplifying the pipeline layout.

[0031] The second control valve assembly 60 may include several one-way water valves, three-way water valves, or four-way water valves. Alternatively, as... Figure 2As shown, the second control valve assembly 60 includes a five-way water valve, and the second control valve assembly 60 has a first end 61, a second end 62, a third end 63, a fourth end 64, and a fifth end 65. The other water inlet end and the other water outlet end of the first battery sub-water circuit 23a are connected to the fourth end 64 and the third end 63 of the second control valve assembly 60 respectively, and the other water inlet end and the other water outlet end of the second battery sub-water circuit 23b are also connected to the fourth end 64 and the third end 63 of the second control valve assembly 60 respectively. The water inlet end and the water outlet end of the first motor sub-water circuit 34a are connected to the second end 62 and the fifth end 65 of the second control valve assembly 60 respectively, and the water inlet end and the water outlet end of the second motor sub-water circuit 34b are connected to the second end 62 and the first end 61 of the second control valve assembly 60 respectively. The second control valve assembly 60 includes a five-way water valve, and the five-way water valve has five ports, which can meet the access requirements of the battery sub-water circuit 23 and the motor sub-water circuit 34, and reduce the number of control valves, thereby simplifying the structure of the thermal management system 100. In addition, the other water inlet end of the first battery sub-water circuit 23a and the other water inlet end of the second battery sub-water circuit 23b share the fourth end 64, the other water outlet end of the first battery sub-water circuit 23a and the other water outlet end of the second battery sub-water circuit 23b share the third end 63, and the water inlet end of the first motor sub-water circuit 34a and the water inlet end of the second motor sub-water circuit 34b share the second end 62, thereby realizing the combined arrangement of part of the pipelines and simplifying the arrangement of the pipelines.

[0032] Referring to Figure 2 In an embodiment, the thermal management system 100 includes an expansion water tank 70, and the battery water circuit 20, the motor water circuit 30, and the passenger compartment water circuit 40 are all in communication with the expansion water tank 70. The expansion water tank 70 is used to store water and adjust the pressure in the water circuit. When water circulates in the water circuit, the water expands due to heat, and the excess water can flow into the expansion water tank 70, thereby preventing the pressure in the water circuit from being too high. The expansion water tank 70 has a space inside to accommodate air, and when the pressure in the water circuit is too high, part of the air can be discharged, thereby ensuring the stable operation of the water circuit.

[0033] 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.

[0034] As previously mentioned, the number of evaporators 16 can be one or two. In one embodiment, such as... Figure 2 As shown, there are two evaporators 16, one in the front row and one in the rear row of the passenger compartment. The second heat exchanger 14, the compressor 11, and the 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 rows of the passenger compartment, respectively. By placing two evaporators 16 in the front and rear rows of the passenger compartment, zoned cooling of the passenger compartment can be achieved, facilitating refined heat management and reducing vehicle energy consumption.

[0035] In one embodiment, such as Figure 2 As shown, the crew compartment water circuit 40 includes a heating core 41 and a heating water pump 42. The heating core 41 is installed 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.

[0036] In one embodiment, such as Figure 2 As shown, the heater core 41 is located in the front row area of ​​the passenger compartment, and the thermal management system 100 also includes a heater 80 located 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 positioning 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.

[0037] The heat management system 100 provided in the present application, the first control valve assembly 50 can control the selective communication of each battery sub-water circuit 23 and the passenger cabin water circuit 40, and the second control valve assembly 60 can control the selective communication of each battery sub-water circuit 23 and each motor sub-water circuit 34. By changing the communication mode of the water circuit, the corresponding heat management mode can be realized. Some exemplary heat management modes are described below.

[0038] Referring to Figure 3 , Figure 6 In an embodiment, the third end 53 and the fourth end 54 of the first control valve assembly 50 are communicated, and the first end 51 and the second end 52 of the first control valve assembly 50 are communicated; the second end 62 and the third end 63 of the second control valve assembly 60 are communicated, and the fourth end 64 and the fifth end 65 of the second control valve assembly 60 are communicated. In the above heat management mode, the passenger cabin water circuit 40 is communicated, and the passenger cabin can independently perform heating or cooling; 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 are cooled through the radiator 33.

[0039] Referring to Figure 3 , Figure 6 In an embodiment, the third end 53 and the fourth end 54 of the first control valve assembly 50 are communicated, and the first end 51 and the second end 52 of the first control valve assembly 50 are communicated; the third end 63 and the fourth end 64 of the second control valve assembly 60 are communicated, and the second end 62 and the fifth end 65 of the second control valve assembly 60 are communicated. In the above heat management mode, the passenger cabin water circuit 40 is communicated, and the passenger cabin can independently perform heating or cooling; the second battery sub-water circuit 23b is communicated, and the battery 21 is cooled through the water circulation; the first motor sub-water circuit 34a is communicated, and the motor 31 is cooled through the radiator 33, at this time, the three water circuits are relatively independent.

[0040] Referring to Figure 3 , Figure 4 In an embodiment, the third end 53 and the fourth end 54 of the first control valve assembly 50 are communicated, and the second end 52 and the fifth end 55 of the first control valve assembly 50 are communicated; the third end 63 and the fourth end 64 of the second control valve assembly 60 are communicated, and the second end 62 and the fifth end 65 of the second control valve assembly 60 are communicated. In the above heat management mode, the passenger cabin water circuit 40 is communicated, and the passenger cabin can independently perform heating or cooling; the first battery sub-water circuit 23a is communicated, and the battery 21 is cooled through the second sub-refrigerant circuit 19b; the first motor sub-water circuit 34a is communicated, and the motor 31 is cooled through the radiator 33.

[0041] Referring to Figure 3 , Figure 6In an embodiment, the second end 52 and the third end 53 of the first control valve assembly 50 are communicated, the first end 51 and the fourth end 54 of the first control valve assembly 50 are communicated; the third end 63 and the fourth end 64 of the second control valve assembly 60 are communicated, the second end 62 and the fifth end 65 of the second control valve assembly 60 are communicated. In the above heat management mode, the passenger cabin water circuit 40 and the second battery sub-water circuit 23b are in series, and the fourth sub-refrigerant circuit 19d can release heat to the passenger cabin water circuit 40 and the second battery sub-water circuit 23b, because the passenger cabin water circuit 40 is communicated with the first heat exchanger 12 in the third sub-refrigerant circuit 19c, at this time the compressor 11 is used for heating the passenger cabin and heat preservation of the battery 21; the first motor sub-water circuit 34a is communicated, and the motor 31 is cooled by the radiator 33.

[0042] Please refer to Figure 6 In an embodiment, the second end 52 and the third end 53 of the first control valve assembly 50 are communicated, the first end 51 and the fourth end 54 of the first control valve assembly 50 are communicated; the third end 63 and the fourth end 64 of the second control valve assembly 60 are communicated, the second end 62 and the fifth end 65 of the second control valve assembly 60 are communicated. In the above heat management mode, the passenger cabin water circuit 40 and the second battery sub-water circuit 23b are in series, and the fourth sub-refrigerant circuit 19d can release heat to the passenger cabin water circuit 40 and the second battery sub-water circuit 23b, because the passenger cabin water circuit 40 is communicated with the first heat exchanger 12 in the third sub-refrigerant circuit 19c, at this time the compressor 11 is used for heating the passenger cabin and heat preservation of the battery 21; the first motor sub-water circuit 34a is communicated, and the motor 31 is cooled by the radiator 33.

[0043] Please refer to Figure 6 In an embodiment, the second end 52 and the third end 53 of the first control valve assembly 50 are communicated, the first end 51 and the fourth end 54 of the first control valve assembly 50 are communicated; the third end 63 and the fourth end 64 of the second control valve assembly 60 are communicated, the second end 62 and the fifth end 65 of the second control valve assembly 60 are communicated. In the above heat management mode, the passenger cabin water circuit 40 and the second battery sub-water circuit 23b are in series, and the fourth sub-refrigerant circuit 19d can release heat to the passenger cabin water circuit 40 and the second battery sub-water circuit 23b, because the passenger cabin water circuit 40 is communicated with the first heat exchanger 12 in the third sub-refrigerant circuit 19c, at this time the compressor 11 is used for heating the passenger cabin and heat preservation of the battery 21; the first motor sub-water circuit 34a is communicated, and the motor 31 is cooled by the radiator 33.

[0044] Please refer to Figure 6In an embodiment, the third end 53 and the fourth end 54 of the first control valve assembly 50 are communicated, and the second end 52 and the fifth end 55 of the first control valve assembly 50 are communicated; the first end 61 and the fourth end 64 of the second control valve assembly 60 are communicated, and the second end 62 and the third end 63 of the second control valve assembly 60 are communicated. In the above heat 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 heat in the first battery sub-water circuit 23a and the second motor sub-water circuit 33b through the heat absorber 13, and the fourth sub-refrigerant circuit 19d can release heat to the passenger compartment water circuit through the first heat exchanger 12, so that the fourth sub-refrigerant circuit 19d can cool the motor 31 and the battery 21, and the heat emitted by the motor 31 and the battery 21 during operation is used for heating the passenger compartment, realizing comprehensive management of heat, which can reduce the power consumption of the compressor 11 during passenger compartment heating, thereby reducing the energy consumption of the vehicle.

[0045] The present application provides a vehicle. Please refer to Figure 7 The vehicle 1000 includes the heat management system 100 as described above. The vehicle 1000 can be a car, a house car, a bus, etc. The heat management system 100 couples the battery water circuit 20, the motor water circuit 30 and the passenger compartment water circuit 40, realizes comprehensive management of heat of multiple modules, and can reduce the energy consumption of the vehicle 1000, thereby improving the endurance of the vehicle 1000. The other structures of the vehicle 1000 are not described again.

[0046] The above only describes some embodiments of the present application, and does not limit the protection scope of the present application, and any equivalent device or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A thermal management system, characterized by, The application relates to a refrigerant circuit, a battery water circuit, a motor water circuit and a passenger cabin water circuit. The refrigerant circuit comprises a compressor, a first heat exchanger and a heat sink, the first heat exchanger and the heat sink being in communication with the compressor to form a plurality of sub-refrigerant circuits. The battery water circuit is used for adjusting the temperature of a battery, and comprises a plurality of battery sub-water circuits, one of which is in communication with the heat sink. The motor water circuit is used for adjusting the temperature of a motor, and comprises a plurality of motor sub-water circuits. The passenger cabin water circuit is used for heating the passenger cabin, and is in communication with the first heat exchanger. A first control valve assembly is connected between each battery sub-water circuit and the passenger cabin water circuit. A second control valve assembly is connected between each battery sub-water circuit and each motor sub-water circuit. The first control valve assembly is configured to selectively connect each battery sub-water circuit with the passenger cabin water circuit, and the second control valve assembly is configured to selectively connect each battery sub-water circuit with each motor sub-water circuit, so that heat exchange can be selectively performed between each sub-refrigerant circuit, each battery sub-water circuit, each motor sub-water circuit and the passenger cabin water circuit. The battery water circuit comprises the battery and a battery water pump, and the battery, the battery water pump, the first control valve assembly, the second control valve assembly and the heat sink form a first battery sub-water circuit. The motor water circuit comprises the motor, a motor water pump and a radiator, and the motor, the motor water pump, the second control valve assembly and the radiator form a first motor sub-water circuit. The refrigerant circuit further comprises a second heat exchanger, a gas-liquid separator and at least one evaporator, the second heat exchanger is used for exchanging heat with air, and each evaporator is arranged in the passenger cabin; the second heat exchanger, the compressor and the gas-liquid separator are in communication with each evaporator to form at least one first sub-refrigerant circuit; the second heat exchanger, the compressor, the gas-liquid separator and the heat sink form a second sub-refrigerant circuit, which can absorb heat in the first battery sub-water circuit through the heat sink; the second heat exchanger, the compressor, the gas-liquid separator and the first heat exchanger form a third sub-refrigerant circuit, which 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 heat sink form a fourth sub-refrigerant circuit, which can absorb heat in the first battery sub-water circuit and the second motor sub-water circuit through the heat sink, and can release heat to the passenger cabin water circuit through the first heat exchanger.

2. The thermal management system of claim 1, wherein, The first control valve assembly comprises a five-way water valve, and has a first end, a second end, a third end, a fourth end and a fifth end; One of the water inlet end and the water outlet end of the first battery sub-water circuit is connected to the second end and the fifth end of the first control valve assembly respectively, and one of the water inlet end and the water outlet end of the second battery sub-water circuit is connected to the second end and the 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 fourth end and the third end of the first control valve assembly respectively.

3. The thermal management system of claim 2, wherein, The second control valve assembly comprises a five-way water valve, and has a first end, a second end, a third end, a fourth end and a fifth end; The other water inlet end and the other water outlet end of the first battery sub-water circuit are connected to the fourth end and the 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 fourth end and the 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 second end and the 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 second end and the first end of the second control valve assembly respectively.

4. The thermal management system of claim 1, wherein, The thermal management system comprises 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 comprises: An electronic expansion valve for controlling the flow rate and pressure of refrigerant in each of the sub-refrigerant circuits; A solenoid valve for controlling the on-off of each of the sub-refrigerant circuits or changing the flow direction of refrigerant in the circuit to selectively control the sub-refrigerant circuit to be in an operating state.

5. The thermal management system of claim 1, wherein, The refrigerant circuit comprises a second heat exchanger, a gas-liquid separator and two evaporators, the two evaporators are arranged in the front row area and the rear row area of the passenger cabin respectively, and the second heat exchanger, the compressor and the gas-liquid separator are communicated with the two evaporators to form two first sub-refrigerant circuits, and the two first sub-refrigerant circuits are used for refrigeration of the front row area and the rear row area of the passenger cabin respectively. The passenger cabin water circuit comprises a heater core and a heating water pump, the heater core is arranged in the passenger cabin, the heater core, the heating water pump and the first heat exchanger are communicated to form the passenger cabin water circuit, and the heater core is used for heating of the passenger cabin; or The heater core is arranged in the front row area of the passenger cabin, the thermal management system further comprises a heater, the heater is arranged in the rear row area of the passenger cabin, and the heater core and the heater are both used for heating of the passenger cabin.

6. A vehicle characterized by comprising: The thermal management system comprises the thermal management system according to any one of claims 1-5.

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