Thermal management system and vehicle

Abstract

The invention 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 loop and the passenger compartment water loop; the second control valve assembly is connected between each battery sub-water loop and each motor sub-water loop; wherein the first control valve assembly is configured to control the battery sub-water loops to selectively communicate with the passenger compartment water loop, and the second control valve assembly is configured to control the battery sub-water loops to selectively communicate with the motor sub-water loops. Therefore, heat exchange can be selectively carried out among all the sub refrigerant loops, all the battery sub water loops, all the motor sub water loops and the passenger compartment water loop. According to the heat management system, the battery water loop, the motor water loop and the passenger compartment water loop are coupled, comprehensive management of heat of multiple modules is achieved, energy consumption of the vehicle is further reduced, and the endurance of the vehicle is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a thermal management system and vehicle equipment. Background Art

[0002] The vehicle includes a battery and a motor. The battery provides electrical energy for the vehicle, and the motor is used to drive the vehicle. The battery (motor) generates heat when working, and the battery (motor) needs to be cooled; or, when the external ambient temperature is lower than the normal operating temperature of the battery (motor), the battery (motor) needs to be kept warm, so it is necessary to perform thermal management on the battery and the motor. The vehicle is also equipped with an air conditioner, which is used for cooling or heating the passenger compartment, and the passenger compartment also needs thermal management. In the related technology, the thermal management system includes three subsystems: passenger compartment thermal management, battery thermal management, and motor thermal management. Each subsystem is relatively independent, which makes it difficult to achieve comprehensive heat management, and the vehicle's energy consumption is high, affecting the vehicle's endurance. Summary of the invention

[0003] The present application provides a thermal management system and a vehicle, which can solve the technical problem that the vehicle's high energy consumption affects its cruising range.

[0004] To solve the above technical problems, the present application provides a thermal management system on one hand, including: a refrigerant circuit, including a compressor, a first heat exchanger and a heat absorber, the first heat exchanger and the heat absorber are connected to the compressor to form a plurality of sub-refrigerant circuits; a battery water circuit, used to adjust the temperature of the battery, the battery water circuit includes a plurality of battery sub-water circuits, one of which is connected to the heat absorber; a motor water circuit, used to adjust the temperature of the motor, the motor water circuit includes a plurality of motor sub-water circuits; a passenger compartment water circuit, used for heating the passenger compartment, the passenger compartment water circuit is connected to 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 control each battery sub-water circuit to selectively connect to the passenger compartment water circuit, and the second control valve assembly is configured to control each battery sub-water circuit to selectively connect to 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 compartment water circuit.

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

[0006] The thermal management system provided in the present application, first, 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 optional thermal management modes, so that the corresponding mode can be selected according to needs to achieve refined management of vehicle heat, thereby reducing the energy consumption of the vehicle; secondly, the thermal management system includes a first control valve assembly and a second control valve assembly, the first control valve assembly can control each battery sub-water circuit to be selectively connected to the passenger compartment water circuit, and the second control valve assembly can control each battery sub-water circuit to be selectively connected to each motor sub-water circuit, so that each sub-refrigerant circuit, each battery sub-water circuit, each motor sub-water circuit and the passenger compartment water circuit can selectively perform heat exchange, thereby coupling the battery water circuit, the motor water circuit and the passenger compartment water circuit, realizing comprehensive management of heat of multiple modules, further reducing the energy consumption of the vehicle, and improving the vehicle's endurance. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

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

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

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

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

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

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

[0014] Figure 7 It is a schematic framework diagram of a vehicle embodiment provided in the present application. DETAILED DESCRIPTION

[0015] The present application is further described in detail below in conjunction with the accompanying drawings and examples. It is particularly noted that the following examples are only used to illustrate the present application, but are not intended to limit the scope of the present application. Similarly, the following examples are only some embodiments of the present application rather than all embodiments, and all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0016] In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically limited. The terms "first", "second", and "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first", "second", and "third" can expressly or implicitly include at least one of the features. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. The terms "including" and "having" in the embodiments of the present application and any of their variations are intended to cover non-exclusive inclusions. 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 optionally also includes steps or units that are not listed, or optionally also includes other steps or components inherent to these processes, methods, products, or devices.

[0017] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0018] This application provides a thermal management system. 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, a first control valve assembly 50 and a second control valve assembly 60. The refrigerant circuit 10 can absorb or release heat by changing 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 change of the refrigerant is accompanied by heat absorption or heat release, so that it can absorb the heat of the passenger compartment, battery or motor, or release heat to the passenger compartment, battery or motor to adjust the temperature of the passenger compartment, battery or motor. The first heat exchanger 12 is used to exchange heat with the passenger compartment water circuit 40. The first heat exchanger 12 can be a plate heat exchanger. The heat absorber 13 is used to exchange heat 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 connected to the compressor 11 to form a plurality of sub-refrigerant circuits 19. There may be two, three, four or more sub-refrigerant circuits 19. The more sub-refrigerant circuits 19 there are, the more optional thermal management modes the refrigerant circuit 10 has. The refrigerant circuit 10 is configured to include a plurality of sub-refrigerant circuits 19, so that the refrigerant circuit 10 has a plurality of optional thermal management modes, so that the corresponding mode can be selected as needed to achieve refined management of vehicle heat, thereby reducing the energy consumption of the vehicle.

[0019] The battery water circuit 20 includes a battery 21 and a battery water pump 22. Figure 1 As shown. The battery water circuit 20 is used to adjust the temperature of the battery 21. When the battery water pump 22 is working, the water is pressurized 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 it is working through the water circulation to achieve the cooling of the battery 21; or, when the ambient temperature is low, the battery water circuit 20 releases heat to the battery 21 through the water circulation to achieve the insulation of the battery 21, which can ensure that the battery 21 works normally at low temperatures or improve the battery 21. The battery water circuit 20 includes a plurality of battery sub-water circuits 23. The battery sub-water circuits 23 can be two, three or more. The more the number of battery sub-water circuits 23, the more optional thermal management modes the battery water circuit 20 has. The battery water circuit 20 is set to include a plurality of battery sub-water circuits 23, so that the battery water circuit 20 has a plurality of optional thermal management modes, so that the corresponding mode can be selected according to the needs to achieve the refined management of the vehicle heat, thereby reducing the energy consumption of the vehicle. One of the battery water sub-circuits 23 is in communication with the heat absorber 13 , so that the refrigerant circuit 10 can perform heat exchange with the battery water circuit 20 to absorb heat in the battery water circuit 20 .

[0020] The motor water circuit 30 includes a motor 31 and a motor water pump 32. Figure 1As shown. The motor water circuit 30 is used to adjust the temperature of the motor 31 to achieve cooling or heat preservation of the motor 31. When the motor water pump 32 is working, the water is pressurized 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 circuits 34 can be two, three or more. The more the number of motor sub-water circuits 34, the more optional thermal management modes the motor water circuit 30 has. The motor water circuit 30 is set to include a plurality of motor sub-water circuits 34, so that the motor water circuit 30 has a plurality of optional thermal management modes, so that the corresponding mode can be selected as needed to achieve refined management of vehicle heat, 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 connected to 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] See also 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. The first control valve assembly 50 is configured to control each battery sub-water circuit 23 to selectively communicate with the passenger compartment water circuit 40, and the second control valve assembly 60 is configured to control each battery sub-water circuit 23 to selectively communicate with each motor sub-water circuit 34, so that heat exchange can be selectively performed 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. For example, the second control valve assembly 60 controls one of the battery sub-water circuits 23 to be connected to 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 heat absorber 13 to be connected, 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-mentioned heat exchange mode, the heat dissipated by the motor 31 and the battery 21 during operation is used for heating the passenger compartment, thereby 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 another example, the motor water circuit 30 is provided with a motor sub-water circuit 34 for dissipating heat to the outdoors. The second control valve assembly 60 controls one of the battery sub-water circuits 23 to be connected to the motor sub-water circuit 34 for dissipating heat to the outdoors, 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 outdoors through the motor sub-water circuit 34, thereby 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 is dissipating heat, thereby reducing the energy consumption of the vehicle.

[0022] The thermal management system 100 provided in the present application, first, the refrigerant circuit 10 includes multiple sub-refrigerant circuits 19, the battery water circuit 20 includes multiple battery sub-water circuits 23, and the motor water circuit 30 includes multiple motor sub-water circuits 34, so that the refrigerant circuit 10, the battery water circuit 20 and the motor water circuit 30 all have multiple optional thermal management modes, so that the corresponding mode can be selected according to needs to achieve refined management of vehicle heat, thereby reducing the energy consumption of the vehicle; secondly, the first control valve assembly 50 can control each battery sub-water circuit 23 to be selectively connected with the passenger compartment water circuit 40, and the second control valve assembly 60 can control each battery sub-water circuit 23 to be selectively connected with 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 perform heat exchange, thereby coupling the battery water circuit 20, the motor water circuit 30 and the passenger compartment water circuit 40, realizing comprehensive management of heat of multiple modules, further reducing the energy consumption of the vehicle, and improving the vehicle's endurance.

[0023] In one embodiment, if Figure 2 As shown, 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. Such an arrangement makes the number of sub-refrigerant circuits 19, battery sub-water circuits 23 and motor sub-water circuits 34 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 the refrigerant circuit 10, battery water circuit 20 and motor water circuit 30 all have certain optional thermal management modes, so that the corresponding mode can be selected according to needs to achieve refined management of vehicle heat, thereby reducing 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 not too large, which is conducive to reducing the complexity of the water circuit.

[0024] See also Figure 2In one embodiment, the battery 21, the battery water pump 22, the first control valve assembly 50, the second control valve assembly 60, and the heat absorber 13 are connected to form a first battery sub-water circuit 23a. The connection between the battery 21 and other components means that the pipelines provided in the battery 21 are connected to the pipelines of other components. The first battery sub-water circuit 23a can exchange heat with the sub-refrigerant circuit 19 through the heat absorber 13, thereby coupling the battery water circuit 20 and the motor water circuit 30 with the refrigerant circuit 10 to achieve comprehensive heat management 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 the second battery sub-water circuit 23b. A first control valve assembly 50 and a second control valve assembly 60 are connected to the second battery sub-water circuit 23b. 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 to achieve comprehensive heat management of multiple modules.

[0025] See also 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, 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 the heat in the first motor sub-water circuit 34a to the air. The connection between the motor 31 and other components means that the pipelines provided in the motor 31 are connected to the pipelines of other components. The first motor sub-water circuit 34a can exchange heat with the air through the radiator 33, dissipate the heat generated when the motor 31 is working to the air, and realize the cooling of the motor 31. Since the heat dissipation of the motor 31 does not require the compressor 11 to work, the power consumption of the compressor 11 when the motor 31 is dissipated can be reduced, thereby reducing 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 be connected to the second battery sub-water circuit 23b, and the first control valve assembly 50 controls the second battery sub-water circuit 23b to be connected to the passenger compartment water circuit 40, and the passenger compartment water circuit 40 is connected to 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 at the same time through the first heat exchanger 12, thereby achieving insulation of the motor 31 and the battery 21.

[0026] In one embodiment, if Figure 3As shown, the refrigerant circuit 10 also 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, under the refrigeration condition, the second heat exchanger 14 can release heat to the air; for another example, under the heating condition, the second heat exchanger 14 can absorb heat from the air. The gas-liquid separator 15 is used to separate the liquid refrigerant and the gas refrigerant. By separating the liquid and the gas, the liquid can be prevented from entering the compressor 11, and the liquid hammer phenomenon can be avoided, thereby ensuring the normal operation of the compressor 11 and preventing it from overloading or being damaged. Each evaporator 16 is arranged in the passenger compartment. The evaporator 16 is 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.

[0027] See also Figure 4 , the second heat exchanger 14, the compressor 11, the gas-liquid separator 15 and the heat absorber 13 are connected to form a second sub-refrigerant circuit 19b, and the second sub-refrigerant circuit 19b can absorb the heat in the first battery sub-water circuit 23a through the heat absorber 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 the heat in the first battery sub-water circuit 23a and the second motor sub-water circuit 34b through the heat absorber 13, and the second sub-refrigerant circuit 19b can be used to cool the battery 21 and the motor 31.

[0028] See also Figure 5 , the second heat exchanger 14, the compressor 11, the gas-liquid separator 15 and the first heat exchanger 12 are connected to form a third sub-refrigerant circuit 19c, and 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.

[0029] See also Figure 6The first heat exchanger 12, the compressor 11, the gas-liquid separator 15 and the heat absorber 13 are connected to form a fourth sub-refrigerant circuit 19d. The fourth sub-refrigerant circuit 19d can absorb the heat in the first battery sub-water circuit 23a and the second motor 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. In this way, 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 when 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.

[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. Figure 2 As shown, the first control valve assembly 50 includes a five-way water valve, and the first control valve assembly 50 has a first end 51, a second end 52, a third end 53, a fourth end 54 and a fifth end 55. One of the water inlet and outlet ends of the first battery sub-water circuit 23a is respectively connected to the second end 52 and the fifth end 55 of the first control valve assembly 50, one of the water inlet and outlet ends of the second battery sub-water circuit 23b is respectively connected to the second end 52 and the first end 51 of the first control valve assembly 50, and the water inlet and outlet end of the passenger 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 first control valve assembly 50 is provided to include 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 passenger compartment water circuit 40, and reduce the number of control valves, which can simplify the structure of the thermal management system 100. In addition, one of the water inlet ends of the first battery sub-water circuit 23a and one of the water inlet ends of the second battery sub-water circuit 23b share the second end 52, so that part of the pipelines are combined and set, which can simplify the layout of the pipelines.

[0031] The second control valve assembly 60 may include a plurality of one-way water valves, three-way water valves or four-way water valves. 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 water outlet end of the first battery sub-water circuit 23a are respectively connected to the fourth end 64 and the third end 63 of the second control valve assembly 60, and the other water inlet end and the water outlet end of the second battery sub-water circuit 23b are also respectively connected to the fourth end 64 and the third end 63 of the second control valve assembly 60. The water inlet end and the water outlet end of the first motor sub-water circuit 34a are respectively connected to the second end 62 and the fifth end 65 of the second control valve assembly 60, and the water inlet end and the water outlet end of the second motor sub-water circuit 34b are respectively connected to the second end 62 and the first end 61 of the second control valve assembly 60. The second control valve assembly 60 is provided to include 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, which can simplify 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 merging of some pipelines and simplifying the layout of the pipelines.

[0032] See also Figure 2 In one embodiment, the thermal management system 100 includes an expansion kettle 70, and the battery water circuit 20, the motor water circuit 30, and the passenger compartment water circuit 40 are all connected to the expansion kettle 70. The expansion kettle 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 excess water can flow into the expansion kettle 70, thereby preventing the pressure in the water circuit from being too high. There is space inside the expansion kettle 70 to accommodate air. 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 the thermal expansion valve, the electronic expansion valve 17 has a faster response speed and a wider adjustment range, and can better adapt to the needs of the thermal management system 100. The solenoid valve 18 is used to control the on and off of each sub-refrigerant circuit 19 or change the flow direction of the refrigerant in the circuit to selectively control each sub-refrigerant circuit 19 to be in a 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 mentioned above, the number of evaporators 16 can be one or two. Figure 2 As shown, there are two evaporators 16, which are respectively arranged in the front row area and the rear row area of ​​the passenger compartment. The second heat exchanger 14, the compressor 11 and the gas-liquid separator 15 are respectively connected with the two evaporators 16 to form two first sub-refrigerant circuits 19a, which are respectively used for cooling the front row area and the rear row area of ​​the passenger compartment. The two evaporators 16 are respectively arranged in the front row area and the rear row area of ​​the passenger compartment, so that the zonal cooling of the passenger compartment can be realized, which is conducive to the refined management of the heat in the passenger compartment, thereby reducing the energy consumption of the vehicle.

[0035] In one embodiment, if Figure 2 As shown, the passenger compartment water circuit 40 includes a heater core 41 and a heating water pump 42. The heater core 41 is arranged in the passenger compartment. The heater core 41, the heating water pump 42, and the first heat exchanger 12 are connected to form the passenger compartment water circuit 40. The heater core 41 is used for heating the passenger compartment.

[0036] In one embodiment, if Figure 2 As shown, the heater core 41 is arranged in the front area of ​​the passenger compartment, and the thermal management system 100 further includes a heater 80, which is arranged in the rear area of ​​the passenger compartment. The heater core 41 and the heater 80 are both used for heating the passenger compartment. The heater core 41 and the heater 80 are arranged in the front area and the rear area of ​​the passenger compartment respectively, so that the zoned heating of the passenger compartment can be realized, which is conducive to the refined management of the heat in the passenger compartment, thereby reducing the energy consumption of the vehicle.

[0037] In the thermal management system 100 provided in the present application, the first control valve assembly 50 can control each battery water circuit 23 to selectively communicate with the passenger compartment water circuit 40, and the second control valve assembly 60 can control each battery water circuit 23 to selectively communicate with each motor water circuit 34. The corresponding thermal management mode can be realized by changing the water circuit connection mode. Some exemplary thermal management modes are described below.

[0038] See also Figure 3 , Figure 6 In one embodiment, the third end 53 and the fourth end 54 of the first control valve assembly 50 are connected, and the first end 51 and the second end 52 of the first control valve assembly 50 are connected; the second end 62 and the third end 63 of the second control valve assembly 60 are connected, and the fourth end 64 and the 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, and the passenger compartment can be heated or cooled independently; 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.

[0039] See also Figure 3 , Figure 6 In one embodiment, the third end 53 and the fourth end 54 of the first control valve assembly 50 are connected, and the first end 51 and the second end 52 of the first control valve assembly 50 are connected; the third end 63 and the fourth end 64 of the second control valve assembly 60 are connected, and the second end 62 and the 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, and the passenger compartment can be heated or cooled independently; the second battery sub-water circuit 23b is connected, and the battery 21 dissipates heat through water circulation; the first motor sub-water circuit 34a is connected, and the motor 31 dissipates heat through the radiator 33. At this time, the three water circuits are relatively independent.

[0040] See also Figure 3 , Figure 4 In one embodiment, the third end 53 and the fourth end 54 of the first control valve assembly 50 are connected, and the second end 52 and the fifth end 55 of the first control valve assembly 50 are connected; the third end 63 and the fourth end 64 of the second control valve assembly 60 are connected, and the second end 62 and the 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, and the passenger compartment can be heated or cooled independently; 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.

[0041] See also Figure 3 , Figure 6In one embodiment, the third end 53 and the fourth end 54 of the first control valve assembly 50 are connected, and the first end 51 and the second end 52 of the first control valve assembly 50 are connected; the first end 61 and the fourth end 64 of the second control valve assembly 60 are connected, and the second end 62 and the 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 connected, and the passenger compartment can be heated or cooled independently; the second battery sub-water circuit 23b is coupled in series with the second motor sub-water circuit 34b, and the battery 21 and the motor 31 are kept warm by water circulation.

[0042] See also Figure 6 In one embodiment, the second end 52 and the third end 53 of the first control valve assembly 50 are connected, and the first end 51 and the fourth end 54 of the first control valve assembly 50 are connected; the third end 63 and the fourth end 64 of the second control valve assembly 60 are connected, and the second end 62 and the 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 with 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 keeping the battery 21 warm; the first motor sub-water circuit 34a is connected, and the motor 31 dissipates heat through the radiator 33.

[0043] See also Figure 6 In one embodiment, the second end 52 of the first control valve assembly 50 is connected to the third end 53, and the first end 51 of the first control valve assembly 50 is connected to the fourth end 54; the first end 61 of the second control valve assembly 60 is connected to the fourth end 64, and the second end 62 of the second control valve assembly 60 is connected to the third end 63. 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, and the heat of 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 heats the battery 21 at the same time.

[0044] See also Figure 6In one embodiment, the third end 53 and the fourth end 54 of the first control valve assembly 50 are connected, and the second end 52 and the fifth end 55 of the first control valve assembly 50 are connected; the first end 61 and the fourth end 64 of the second control valve assembly 60 are connected, and the second end 62 and the third end 63 of the second control valve assembly 60 are connected. In the above-mentioned thermal management mode, the first battery sub-water circuit 23a is coupled in series with the second motor sub-water circuit 34b, and the fourth sub-refrigerant circuit 19d can absorb the heat in the first battery sub-water circuit 23a and the second motor 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 use the heat emitted by the motor 31 and the battery 21 when working as heating for the passenger compartment, so as to realize comprehensive heat management, reduce the power consumption of the compressor 11 when heating the passenger compartment, and thus reduce the energy consumption of the vehicle.

[0045] The present application provides a vehicle. Figure 7 The vehicle 1000 includes the thermal management system 100 as described above. The vehicle 1000 may be a sedan, a motor home, a 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 management of heat of multiple modules, which can reduce the energy consumption of the vehicle 1000, thereby improving the endurance of the vehicle 1000. Other structures of the vehicle 1000 are not described in detail.

[0046] The above descriptions are only some embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A thermal management system, characterized in that: include: A refrigerant circuit, comprising a compressor, a first heat exchanger and a heat absorber, wherein the first heat exchanger and the heat absorber are connected to the compressor to form a plurality of sub-refrigerant circuits; A battery water circuit, used to adjust the temperature of the battery, the battery water circuit comprising a plurality of battery sub-water circuits, one of which is connected to the heat absorber; A motor water circuit, used for adjusting the temperature of the motor, wherein the motor water circuit comprises a plurality of motor sub-water circuits; A passenger compartment water circuit, used 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 of the battery sub-water circuits and the passenger compartment water circuit; A second control valve assembly is connected between each of the battery sub-water circuits and each of the motor sub-water circuits; Wherein, the first control valve assembly is configured to control each of the battery sub-water circuits to be selectively connected to the passenger compartment water circuit, and the second control valve assembly is configured to control each of the battery sub-water circuits to be selectively connected to each of the motor sub-water circuits, so that heat exchange can be selectively performed between each of the sub-refrigerant circuits, each of the battery sub-water circuits, each of the motor sub-water circuits and the passenger compartment water circuit.

2. The thermal management system according to claim 1, characterized in that: The refrigerant circuit includes at least four refrigerant sub-circuits, the battery water circuit includes two battery sub-circuits, and the motor water circuit includes two motor sub-circuits.

3. The thermal management system according to claim 2, characterized in that: The battery water circuit includes the battery and a battery water pump; The battery, the battery water pump, the first control valve assembly, the second control valve assembly, and the heat absorber are connected to form a first battery water sub-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 water sub-circuit.

4. The thermal management system according to claim 3, characterized in that: The motor water circuit includes the 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 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.

5. The thermal management system according to claim 4, characterized in that: The refrigerant circuit further 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 arranged in the passenger compartment; The second heat exchanger, the compressor and the gas-liquid separator are respectively connected to each of the evaporators to form at least one first sub-refrigerant circuit, and each of the first sub-refrigerant circuits is used for cooling the passenger compartment; The second heat exchanger, the compressor, the gas-liquid separator and the heat absorber are connected 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 heat absorber; The second heat exchanger, the compressor, the gas-liquid separator and the first heat exchanger are connected to form a third sub-refrigerant circuit, and the third sub-refrigerant circuit can release heat to the passenger compartment water circuit through the first heat exchanger; The first heat exchanger, the compressor, the gas-liquid separator and the heat absorber are connected to form a fourth sub-refrigerant circuit. The fourth sub-refrigerant circuit can absorb heat in the first battery sub-water circuit and the second motor sub-water circuit through the heat absorber, and the fourth sub-refrigerant circuit can release heat to the passenger compartment water circuit through the first heat exchanger.

6. The thermal management system according to claim 5, characterized in that: The first control valve assembly includes a five-way water valve, the first control valve assembly having a first end, a second end, a third end, a fourth end and a fifth end; One of the water inlet and outlet ends of the first battery sub-water circuit is connected to the second end and the fifth end of the first control valve assembly, respectively; one of the water inlet and outlet ends 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 and outlet end of the passenger compartment water circuit is connected to the fourth end and the third end of the first control valve assembly, respectively.

7. The thermal management system according to claim 6, characterized in that: The second control valve assembly includes a five-way water valve, the second control valve assembly having a first end, a second end, a third end, a fourth end and a fifth end; Another water inlet and outlet of the first battery water circuit are connected to the fourth and third ends of the second control valve assembly, respectively, and another water inlet and outlet of the second battery water circuit are also connected to the fourth and third ends of the second control valve assembly, respectively; The water inlet and outlet of the first motor sub-water circuit are respectively connected to the second end and the fifth end of the second control valve assembly, and the water inlet and outlet of the second motor sub-water circuit are respectively connected to the second end and the first end of the second control valve assembly.

8. The thermal management system according to claim 1, characterized in that: The thermal management system comprises an expansion kettle, and the battery water circuit, the motor water circuit and the passenger compartment water circuit are all connected to the expansion kettle; The refrigerant circuit further comprises: An electronic expansion valve, used to control the flow rate and pressure of the refrigerant in each of the sub-refrigerant circuits; The solenoid valve is used to control the on / off of each of the sub-refrigerant circuits or change the flow direction of the refrigerant in the circuit, so as to selectively control the sub-refrigerant circuit to be in a working state.

9. The thermal management system according to claim 1, characterized in that: The refrigerant circuit includes a second heat exchanger, a gas-liquid separator and two evaporators, the two evaporators are respectively arranged in the front row area and the rear row area of ​​the passenger compartment, the second heat exchanger, the compressor and the gas-liquid separator are respectively connected with the two evaporators to form two first sub-refrigerant circuits, and the two first sub-refrigerant circuits are respectively used for cooling the front row area and the rear row area of ​​the passenger compartment; The passenger compartment water circuit includes a heater core and a heating water pump, the heater core is arranged in the passenger compartment, the heater core, the heating water pump and the first heat exchanger are connected to form the passenger compartment water circuit, and the heater core is used for heating the passenger compartment; or, The heater core is arranged in the front area of ​​the passenger compartment. The thermal management system also includes a heater, which is arranged in the rear area of ​​the passenger compartment. The heater core and the heater are both used for heating the passenger compartment.

10. A vehicle, characterized in that: Comprising a thermal management system as claimed in any one of claims 1 to 9.

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