Thermal management system and vehicle

Abstract

The utility model provides a thermal management system and a vehicle. The heat management system comprises a first heat exchanger, a compressor, an air conditioner assembly, a battery heat exchange assembly used for conducting heat exchange on a battery of the vehicle and a motor heat exchange loop used for conducting heat exchange on a motor of the vehicle, the first heat exchanger comprises a refrigerant side and a cooling liquid side, and the refrigerant side is connected with the compressor, the battery heat exchange assembly and the air conditioner assembly. The cooling liquid side is connected with a motor heat exchange loop. The refrigerant side of the first heat exchanger is connected with the compressor, the battery heat exchange assembly and the air conditioner assembly, and the cooling liquid side of the first heat exchanger is connected with the motor heat exchange loop, so that the first heat exchanger can conduct heat exchange on the battery heat exchange assembly through a refrigerant and collect waste heat of the battery heat exchange assembly; the first heat exchanger can conduct heat exchange on the motor through the cooling liquid and the motor heat exchange loop, so that waste heat of the motor is collected, the heat exchange efficiency of the heat management system is improved, heat exchange is conducted on the battery and the motor under the condition that waste heat recovery of the motor is not affected, and the control mode is simple and rapid.

Description

Technical Field

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

[0002] The thermal management system in a vehicle can control and coordinate the heat dissipation and temperature requirements inside the vehicle, ensuring the safety of vehicle operation, and is one of the important in-vehicle control systems. In related technologies, due to unreasonable arrangement of heat exchange components in the thermal management system, the temperature utilization is poor, the heat exchange efficiency is affected, and the control system is complex, making it inconvenient to exchange heat with other components inside the vehicle. Summary of the Utility Model

[0003] The present application provides a thermal management system and a vehicle that are convenient for waste heat recovery, have high heat exchange efficiency, and are easy to control.

[0004] The present application provides a thermal management system, which includes a first heat exchanger, a compressor, an air conditioning assembly, a battery heat exchange assembly for exchanging heat with the battery of the vehicle, and a motor heat exchange circuit for exchanging heat with the motor of the vehicle. The first heat exchanger includes a refrigerant side and a coolant side. The refrigerant side is respectively connected to the compressor, the battery heat exchange assembly, and the air conditioning assembly, and the coolant side is connected to the motor heat exchange circuit.

[0005] Optionally, the thermal management system includes a rapid heating mode. The motor heat exchange circuit includes a water heater and a first one-way pump. The water heater is respectively connected to the first heat exchanger and the first one-way pump. When the thermal management system is in the rapid heating mode, the first one-way pump is opened.

[0006] Optionally, the thermal management system further includes a radiator and a second multi-way valve. The radiator is connected in parallel with the first heat exchanger and the water heater. The second multi-way valve is arranged in the motor heat exchange circuit and is connected to one end of the radiator.

[0007] Optionally, the thermal management system includes a first multi-way valve connected to one end of the compressor. The air conditioning assembly includes a second heat exchanger. The second heat exchanger is connected to the first multi-way valve and is connected in parallel with the first heat exchanger. The first multi-way valve includes a first connection state, a second connection state, and a third connection state.

[0008] Optionally, when the first multi-way valve switches to the first connection state, the first multi-way valve connects one end of the compressor and the second heat exchanger.

[0009] Optionally, when the first multi-way valve switches to the second connection state, the first multi-way valve connects one end of the compressor and the battery heat exchange assembly.

[0010] Optionally, when the first multi-way valve switches to the third communication state, the first multi-way valve communicates one end of the compressor with the second heat exchanger and also communicates one end of the compressor with the battery heat exchange assembly.

[0011] Optionally, the battery heat exchange assembly includes a direct cooling and direct heating heat exchanger for heating and cooling the battery. One end of the direct cooling and direct heating heat exchanger is connected to the first multi-way valve, and the other end is connected to the first heat exchanger.

[0012] Optionally, the thermal management system includes a battery heating condition and a battery cooling condition. The battery heat exchange assembly further includes a first expansion valve connected between the first heat exchanger and the direct cooling and direct heating heat exchanger. The first expansion valve includes a first opening range and a second opening range, and the first opening range is larger than the second opening range.

[0013] When the battery is in the battery heating condition, the first expansion valve is in the first opening range, and when the battery is in the battery cooling condition, the first expansion valve is in the second opening range.

[0014] Optionally, the thermal management system includes a rapid temperature rise mode. The thermal management system further includes a second expansion valve. The compressor, the first multi-way valve, and the second expansion valve are interconnected. When the thermal management system is in the rapid temperature rise mode, the first multi-way valve switches to the second communication state and the second expansion valve opens.

[0015] Optionally, the air conditioning assembly further includes a third heat exchanger and a third expansion valve connected to the third heat exchanger. The third heat exchanger and the third expansion valve are connected in parallel with the first heat exchanger and are connected to the compressor.

[0016] Optionally, the thermal management system includes a fourth expansion valve, and the fourth expansion valve is provided on the side of the first heat exchanger connected to the air conditioning assembly.

[0017] Optionally, the first heat exchanger includes a water-cooled condenser.

[0018] Optionally, the compressor includes an enhanced enthalpy compressor.

[0019] Optionally, a gas-liquid separator is provided upstream of the compressor.

[0020] This application also provides a vehicle, which includes a battery, a motor, and the thermal management system according to any one of the foregoing.

[0021] The heat management system and vehicle provided by the present application are such that the refrigerant side of the first heat exchanger is respectively connected to a compressor, a battery heat exchange assembly, and an air conditioning assembly, and the coolant side is connected to a motor heat exchange circuit. With this arrangement, the first heat exchanger can exchange heat with the battery heat exchange assembly through the refrigerant and collect the waste heat of the battery heat exchange assembly. The first heat exchanger can also exchange heat with the motor through the coolant and the motor heat exchange circuit, thereby collecting the waste heat of the motor, improving the heat exchange efficiency of the heat management system, and exchanging heat with the battery and the motor respectively without affecting the recovery of the motor waste heat, with a simple and fast control method. Description of the Drawings

[0022] The drawings herein are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present disclosure and used together with the specification to explain the principles of the present disclosure.

[0023] Figure 1 The figure shows a schematic diagram of an embodiment of the heat management system of the present application.

[0024] Figure 2 The figure shows a schematic diagram of an embodiment of the rapid heating mode of the heat management system of the present application.

[0025] Figure 3 The figure shows a schematic diagram of another embodiment of the rapid heating mode of the heat management system of the present application.

[0026] Figure 4 The figure shows a schematic diagram of an embodiment of the first heat exchanger heat dissipation and motor heat dissipation mode of the heat management system of the present application.

[0027] Figure 5 The figure shows a schematic diagram of an embodiment of the air conditioning refrigeration mode or the air conditioning dehumidification mode of the heat management system of the present application.

[0028] Figure 6 The figure shows a schematic diagram of an embodiment of the battery cooling mode of the heat management system of the present application.

[0029] Figure 7 The figure shows a schematic diagram of an embodiment of the air conditioning refrigeration and battery cooling modes of the heat management system of the present application.

[0030] Figure 8 The figure shows a schematic diagram of an embodiment of the air conditioning refrigeration and battery heating modes of the heat management system of the present application.

[0031] Figure 9 The figure shows a schematic diagram of an embodiment of the air conditioning heating mode of the heat management system of the present application.

[0032] Figure 10 The figure shows a schematic diagram of an embodiment of the battery heating mode of the heat management system of the present application.

[0033] Figure 11 The figure shows a schematic diagram of an embodiment of the first air - conditioning heating and battery heating mode, as well as the air - conditioning heating and battery cooling mode of the thermal management system of the present application.

[0034] Figure 12 The figure shows a schematic diagram of an embodiment of the second air - conditioning heating and battery heating mode of the thermal management system of the present application.

[0035] Figure 13 The figure shows a schematic diagram of an embodiment of the air - conditioning heating and dehumidifying mode of the thermal management system of the present application.

[0036] Figure 14 The figure shows a schematic diagram of an embodiment of the air - conditioning heating, dehumidifying and battery cooling mode of the thermal management system of the present application.

[0037] Figure 15 The figure shows a schematic diagram of an embodiment of the air - conditioning heating, dehumidifying and battery heating mode of the thermal management system of the present application.

[0038] Description of reference numerals:

[0039] Thermal management system 100; battery 200; motor 300; first heat exchanger 1; refrigerant side 11;

[0040] Coolant side 12; compressor 2; gas - liquid separator 21; air - conditioning assembly 3; second heat exchanger 31; third heat exchanger 32; third expansion valve 33; battery heat exchange assembly 4; direct - cooling and direct - heating heat exchanger 41; first expansion valve 42; motor heat exchange circuit 5; water heater 51; first one - way pump 52; second one - way pump 53; first multi - way valve 6; first port 61; second port 62; third port 63; fourth port 64; second expansion valve 101; fourth expansion valve 102; switching valve 103; radiator 7; second multi - way valve 8; first interface 81; second interface 82; third interface 83. Detailed implementation manners

[0041] Here, the technical solutions in the embodiments (or "implementation manners") of the present application will be clearly and completely described in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numerals in different drawings represent the same or similar elements.

[0042] If there are terms related to directional indication or positional relationship in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the attached drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only for the purpose of convenient description and cannot be construed as indicating or implying relative importance.

[0043] The present application provides a thermal management system. The thermal management system includes a first heat exchanger, a compressor, an air-conditioning assembly, a battery heat exchange assembly for exchanging heat with the vehicle's battery, and a motor heat exchange circuit for exchanging heat with the vehicle's motor. The first heat exchanger includes a refrigerant side and a coolant side. The refrigerant side is respectively connected to the compressor, the battery heat exchange assembly, and the air-conditioning assembly, and the coolant side is connected to the motor heat exchange circuit. The refrigerant side of the first heat exchanger is respectively connected to the compressor, the battery heat exchange assembly, and the air-conditioning assembly, and the coolant side is connected to the motor heat exchange circuit. With such a setting, the first heat exchanger can exchange heat with the battery heat exchange assembly through the refrigerant and collect the waste heat of the battery heat exchange assembly. The first heat exchanger can exchange heat with the motor through the coolant and the motor heat exchange circuit, thereby collecting the waste heat of the motor, improving the heat exchange efficiency of the thermal management system, and exchanging heat with the battery and the motor respectively without affecting the recovery of the motor waste heat, and the control method is simple and fast.

[0044] The present application provides a thermal management system and a vehicle. The thermal management system and the vehicle of the present application will be described in detail below with reference to the accompanying drawings.

[0045] Figure 1 Shown is a schematic diagram of an embodiment of the thermal management system 100 of the present application. In Figure 1In the illustrated embodiment, the vehicle includes a battery 200, an electric motor 300, and a thermal management system 100. The thermal management system 100 is configured to regulate the temperatures of the battery 200 and the electric motor 300. The thermal management system 100 includes a first heat exchanger 1, a compressor 2, an air-conditioning assembly 3, a battery heat exchange assembly 4 for exchanging heat with the vehicle's battery 200, and an electric motor heat exchange circuit 5 for exchanging heat with the vehicle's electric motor 300. The first heat exchanger 1 includes a water-cooled condenser, which can prevent the influence of the vehicle's front cabin air intake at low temperatures, solve the problem that the external heat exchanger of the vehicle is prone to frosting in a low-temperature environment, and ensure the stability and efficiency of the thermal management system 100. The water-cooled condenser can dissipate heat during refrigeration and absorb heat during heating, reducing the use of additional components, occupying less space, reducing weight, and reducing the possibility of refrigerant leakage. The first heat exchanger 1 includes a refrigerant side 11 and a coolant side 12. The refrigerant side 11 is for circulating refrigerant, and the coolant side 12 is for circulating coolant, such as water. The refrigerant side 11 is respectively connected to the compressor 2, the battery heat exchange assembly 4, and the air-conditioning assembly 3, and the coolant side 12 is connected to the electric motor heat exchange circuit 5. The refrigerant side 11 of the first heat exchanger 1 is respectively connected to the compressor 2, the battery heat exchange assembly 4, and the air-conditioning assembly 3, and the coolant side 12 is connected to the electric motor heat exchange circuit 5. With such an arrangement, the first heat exchanger 1 can exchange heat with the battery heat exchange assembly 4 through the refrigerant and collect the waste heat of the battery heat exchange assembly 4. The first heat exchanger 1 can exchange heat with the electric motor 300 through the coolant and the electric motor heat exchange circuit 5, thereby collecting the waste heat of the electric motor 300, improving the heat exchange efficiency of the thermal management system 100, and exchanging heat with the battery 200 and the electric motor 300 respectively without affecting the waste heat recovery of the electric motor 300, and the control method is simple and fast. In some other embodiments, the compressor 2 includes an enhanced enthalpy compressor 2. The enhanced enthalpy compressor 2 can cause the refrigerant to flow into the compressor 2 twice, improving the operating efficiency of the compressor 2. An air-liquid separator 21 is provided upstream of the compressor 2. The air-liquid separator 21 is for filtering to reduce the working burden of the compressor 2 and improve the service life and safety of the compressor 2.

[0046] In Figure 1In the illustrated embodiment, the thermal management system 100 includes a first multi-way valve 6 connected to one end of the compressor 2. The first multi-way valve 6 includes a first port 61, a second port 62, a third port 63, and a fourth port 64. The air-conditioning assembly 3 includes a second heat exchanger 31. The second heat exchanger 31 may be a condenser. The second heat exchanger 31 is connected to the first multi-way valve 6 and is connected in parallel with the first heat exchanger 1. One end of the second heat exchanger 31 is connected to the fourth port 64 of the first multi-way valve 6, and the other end of the second heat exchanger 31 is connected to the first heat exchanger 1. The first multi-way valve 6 includes a first connection state, a second connection state, and a third connection state. When the first multi-way valve 6 is in the first connection state, the first port 61 and the fourth port 64 are connected. When the first multi-way valve 6 is in the second connection state, the first port 61 and the third port 63 are connected. When the first multi-way valve 6 is in the third connection state, the first port 61 and the third port 63 are connected and the first port 61 and the fourth port 64 are connected. When the first multi-way valve 6 is switched to the first connection state, the first multi-way valve 6 connects one end of the compressor 2 and the second heat exchanger 31. With such an arrangement, the temperature control of the air-conditioning assembly 3 can be switched. When the first multi-way valve 6 is switched to the second connection state, the first multi-way valve 6 connects one end of the compressor 2 and the battery heat exchange assembly 4. With such an arrangement, the temperature control of the battery 200 can be switched. When the first multi-way valve 6 is switched to the third connection state, the first multi-way valve 6 connects one end of the compressor 2 and the second heat exchanger 31, and also connects one end of the compressor 2 and the battery heat exchange assembly 4. With such an arrangement, the temperature control of the battery 200 and the air-conditioning assembly 3 can be switched simultaneously, and the use of the first multi-way valve 6 can reduce the use of valves, simplify the control system, and facilitate control. In the present embodiment, the first multi-way valve 6 further includes a fourth connection state. When the first multi-way valve 6 is switched to the fourth connection state, the first multi-way valve 6 connects one end of the compressor 2 and the first heat exchanger 1. In the present embodiment, when the first multi-way valve 6 is in the fourth connection state, the first port 61 and the second port 62 are connected. In some embodiments, different temperature control modes can also be achieved by switching other connection states of the first multi-way valve 6. In some other embodiments, different temperature control modes can also be switched by providing multiple valves.

[0047] In Figure 1In the illustrated embodiment, the thermal management system 100 further includes a second expansion valve 101. The compressor 2, the first multi-way valve 6 and the second expansion valve 101 are interconnected. The air-conditioning assembly 3 further includes a third heat exchanger 32 and a third expansion valve 33 connected to the third heat exchanger 32. The third heat exchanger 32 may be an evaporator, and the third heat exchanger 32 is used for refrigeration and dehumidification of the air conditioner. The third heat exchanger 32 and the third expansion valve 33 are connected in parallel with the first heat exchanger 1 and are connected to the compressor 2. In this embodiment, one end of the third heat exchanger 32 may be respectively connected to the first heat exchanger 1, the second heat exchanger 31 and the battery heat exchange assembly 4, and the other end of the third heat exchanger 32 is connected between the second expansion valve 101 and the compressor 2 and is also connected between the first multi-way valve 6 and the first heat exchanger 1. A switching valve 103 is provided on the pipeline where the third heat exchanger 32 leads to the first multi-way valve 6 and the first heat exchanger 1 for connecting and blocking between the first heat exchanger 1 and the third heat exchanger 32. With such an arrangement, refrigeration and dehumidification of the air conditioner can be achieved. The refrigerant enters the first multi-way valve 6 after passing through the compressor 2, then enters the first heat exchanger 1, and finally enters the third heat exchanger 32 and returns to the compressor 2. The thermal management system 100 includes a fourth expansion valve 102, and a fourth expansion valve 102 is provided on the side where the first heat exchanger 1 is connected to the air-conditioning assembly 3. In this embodiment, the fourth expansion valve 102 is used to expand the refrigerant passing between the first heat exchanger 1 and the air-conditioning assembly 3, or for blocking and flowing between the first heat exchanger 1 and the air-conditioning assembly 3.

[0048] In Figure 1In the illustrated embodiment, the battery heat exchange assembly 4 includes a direct cooling and direct heating heat exchanger 41. The direct cooling and direct heating heat exchanger 41 is used to exchange heat for the battery 200. One end of the direct cooling and direct heating heat exchanger 41 is connected to the first multi-way valve 6, and the other end is connected to the first heat exchanger 1. With such an arrangement, heat exchange is carried out by using the first heat exchanger 1 and the direct cooling and direct heating heat exchanger 41, and then heat exchange for the battery 200 is carried out by the direct cooling and direct heating heat exchanger 41. The thermal management system 100 includes a battery heating condition and a battery cooling condition. The battery heat exchange assembly 4 further includes a first expansion valve 42, and the first expansion valve 42 is connected between the first heat exchanger 1 and the direct cooling and direct heating heat exchanger 41. The opening degree of the first expansion valve 42 can thus adjust the refrigerant flow rate passing through the direct cooling and direct heating heat exchanger 41. The first expansion valve 42 includes a first opening degree range and a second opening degree range, and the first opening degree range is larger than the second opening degree range. Both the first opening degree range and the second opening degree range refer to the opening degree range, wherein the first opening degree range is overall larger than the second opening degree range and is used for adjustment under different battery heat exchange conditions. In some embodiments, the first opening degree range can be 51 - 100%, and the second opening degree range can be 20 - 50%. In the present embodiment, when the battery 200 is in the battery heating condition, the first expansion valve 42 is in the first opening degree range, and when the battery 200 is in the battery cooling condition, the first expansion valve 42 is in the second opening degree range. With such an arrangement, the heat exchange condition of the battery 200 can be adjusted by adjusting different opening degree ranges of the first expansion valve 42, which is simple and fast. In some embodiments, when the battery 200 is in the battery heating condition, as the battery 200 is gradually heated and the temperature is higher, the opening degree of the first expansion valve 42 within the first opening degree range is smaller. When the battery 200 is in the battery cooling condition, as the battery 200 is gradually cooled and the temperature is lower, the opening degree of the first expansion valve 42 within the second opening degree range is smaller. In some embodiments, the thermal management system 100 includes a first air-conditioning heating and battery heating mode (see Figure 11 ) and an air-conditioning heating and battery cooling mode (see Figure 11 ). When the thermal management system 100 is in the first air-conditioning heating and battery heating mode, the battery 200 is in the battery heating condition, and the first expansion valve 42 is in the first opening degree range. When the thermal management system 100 is in the air-conditioning heating and battery cooling mode, the first expansion valve 42 is in the second opening degree range. With such an arrangement, the thermal management system 100 can be adjusted to enter the first air-conditioning heating and battery heating mode or the air-conditioning heating and battery cooling mode by adjusting the opening degree range of the first expansion valve 42. In some other embodiments, in other modes of the thermal management system 100, the heat exchange condition of the battery 200 can also be changed by adjusting the first expansion valve 42.

[0049] Figure 2 The figure shows a schematic diagram of an embodiment of the rapid temperature rise mode of the thermal management system 100 of the present application. In Figure 2In the illustrated embodiment, the thermal management system 100 includes a rapid heating mode. The rapid heating mode can also be an extremely low temperature rapid heating mode. The rapid heating mode is activated when the refrigerant temperature is detected to be below a certain temperature value. For example, when the temperature value is 10°C. When the thermal management system 100 is in the rapid heating mode, the first multi-way valve 6 switches to the third communication state, and the second expansion valve 101 opens. In this embodiment, the first port 61 and the third port 63 of the first multi-way valve 6 are in communication. The refrigerant enters the first port 61 of the first multi-way valve 6 from the outlet of the compressor 2, then enters the third port 63, and then returns to the inlet of the compressor 2 through the second expansion valve 101. With this arrangement, the refrigerant can quickly enter the compressor 2 for the second time, thereby quickly accumulating heat, establishing a high and low pressure difference, and improving the operating efficiency of the compressor 2. In this embodiment, when using the heat of the compressor 2 to implement rapid heating, the system COP can be greater than 1, thereby reducing energy consumption. Among them, the system COP is the coefficient of performance of refrigeration, which represents the cooling capacity that can be obtained per unit power consumption. The larger the value of COP, the higher the energy utilization efficiency of the refrigeration system.

[0050] Figure 3 The figure shows a schematic diagram of another embodiment of the rapid heating mode of the thermal management system 100 of the present application. In Figure 3 In the illustrated embodiment, the motor heat exchange circuit 5 includes a water heater 51 and a first one-way pump 52. The water heater 51 can be a water heating PTC, which is used to heat the coolant. The first one-way pump 52 is used to provide power to the coolant in the pipeline, so that the coolant in the pipeline moves in the direction of the one-way pump. The water heater 51 is respectively connected to the first heat exchanger 1 and the first one-way pump 52. When the thermal management system 100 is in the rapid heating mode, the first one-way pump 52 opens. In this embodiment, the first one-way pump 52 is provided downstream of the water heater 51. When the first one-way pump 52 opens, the coolant enters the inlet of the water heater 51 from the outlet of the first heat exchanger 1, then passes through the outlet of the water heater 51, then enters the inlet of the first one-way pump 52, and then passes through the outlet of the first one-way pump 52 and returns to the inlet of the first heat exchanger 1 after passing through the motor 300. With this arrangement, the waste heat of the motor 300 can be utilized to improve the heat exchange efficiency and reduce energy consumption. When the water heater 51 is turned on, the heat of the water heater 51 and the waste heat of the motor 300 can be used to provide heat to the first heat exchanger 1 to achieve the rapid heating mode, and this mode is the same as Figure 2The illustrated embodiments can be carried out simultaneously or separately; when the water heater 51 is turned off, the water heater 51 serves as a passing pipeline, and only utilizes the waste heat of the motor 300 to provide heat to the first heat exchanger 1, realizing the motor waste heat recovery mode. In this embodiment, when the heat of the motor 300 is utilized to implement rapid heating, the system COP can be greater than 1, thereby reducing energy consumption. The thermal management system 100 further includes a radiator 7 and a second multi-way valve 8. The radiator 7 is used to dissipate the heat of the high-temperature coolant to the external environment. In this embodiment, the second multi-way valve 8 can be a three-way valve. The second multi-way valve 8 is disposed between the motor 300 and the first one-way pump 52. The second multi-way valve 8 includes a first interface 81, a second interface 82, and a third interface 83. The second interface 82 is used to connect to the motor 300, and the third interface 83 is used to connect to the first one-way pump 52. In this embodiment, a second one-way pump 53 can also be provided between the motor 300 and the second multi-way valve 8, and the directions provided by the first one-way pump 52 and the second one-way pump 53 are opposite, so that the coolant can flow in two directions. When the motor heat exchange loop 5 starts to circulate, only one of the first one-way pump 52 or the second one-way pump 53 needs to be opened.

[0051] Figure 4 Shown is a schematic diagram of an embodiment of the first heat exchanger heat dissipation and motor heat dissipation modes of the thermal management system 100 of the present application. In Figure 4 this embodiment, the thermal management system 100 includes a first heat exchanger heat dissipation and motor heat dissipation mode. The radiator 7 is connected in parallel with the first heat exchanger 1 and the water heater 51. The second multi-way valve 8 is disposed in the motor heat exchange loop 5 and is connected to one end of the radiator 7. In this embodiment, the first interface 81 is used to connect to the radiator 7. The coolant flows from the first heat exchanger 1 to the water heater 51, then enters the first one-way pump 52, and then enters the third interface 83 of the second multi-way valve 8; and after the coolant passes through the motor 300, it enters the second one-way pump 53 and then enters the second interface 82 of the second multi-way valve 8. Both the second interface 82 and the third interface 83 are communicated with the first interface 81. After the coolant enters the first interface 81, it enters the radiator 7 and then passes through the motor 300 again or passes through the first heat exchanger 1, thus realizing the first heat exchanger heat dissipation and motor heat dissipation modes. With such a setting, it is convenient for the first heat exchanger 1 and the motor 300 to dissipate heat. In some embodiments, when the first interface 81 is only communicated with the second interface 82, the second one-way pump 53 is opened, and the thermal management system 100 is in the motor heat dissipation mode. In some embodiments, when the first interface 81 is only communicated with the third interface 83, the first one-way pump 52 is opened, and the thermal management system 100 is in the first heat exchanger heat dissipation mode.

[0052] In addition, the thermal management system 100 further includes the following modes:

[0053] Figure 5The figure shows a schematic diagram of an embodiment of the air-conditioning cooling mode or the air-conditioning dehumidification mode of the thermal management system 100 of the present application. In Figure 5 In the illustrated embodiment, the thermal management system 100 includes an air-conditioning cooling mode or an air-conditioning dehumidification mode. In this mode, it is necessary to connect the first port 61 and the second port 62 of the first multi-way valve 6, and open the fourth expansion valve 102 and the third expansion valve 33. The refrigerant enters the first port 61 and the second port 62 of the first multi-way valve 6 from the outlet of the compressor 2, enters the first heat exchanger 1, passes through the fourth expansion valve 102, then enters the third expansion valve 33, and returns to the inlet of the compressor 2 after passing through the third heat exchanger 32, thus realizing the air-conditioning cooling mode or the air-conditioning dehumidification mode.

[0054] Figure 6 The figure shows a schematic diagram of an embodiment of the battery cooling mode of the thermal management system 100 of the present application. In Figure 6 In the illustrated embodiment, the thermal management system 100 includes a battery cooling mode. In this mode, it is necessary to connect the first port 61 and the second port 62 of the first multi-way valve 6, and open the fourth expansion valve 102, the first expansion valve 42, and the second expansion valve 101. The refrigerant enters the first port 61 and the second port 62 of the first multi-way valve 6 from the outlet of the compressor 2, enters the first heat exchanger 1, passes through the fourth expansion valve 102, passes through the first expansion valve 42, and then enters the direct cooling and direct heating heat exchanger 41 and returns to the inlet of the compressor 2 through the second expansion valve 101, thus realizing the battery cooling mode.

[0055] Figure 7 The figure shows a schematic diagram of an embodiment of the air-conditioning cooling and battery cooling modes of the thermal management system 100 of the present application. In Figure 7 In the illustrated embodiment, the thermal management system 100 includes an air-conditioning cooling and battery cooling modes. In this mode, it is necessary to connect the first port 61 and the second port 62 of the first multi-way valve 6, and open the fourth expansion valve 102, the first expansion valve 42, the second expansion valve 101, and the third expansion valve 33. One path of the refrigerant enters the first port 61 and the second port 62 of the first multi-way valve 6 from the outlet of the compressor 2, enters the first heat exchanger 1, passes through the fourth expansion valve 102, then enters the third expansion valve 33, and returns to the inlet of the compressor 2 after passing through the third heat exchanger 32. Another path of the refrigerant enters the first port 61 and the second port 62 of the first multi-way valve 6 from the outlet of the compressor 2, enters the first heat exchanger 1, passes through the fourth expansion valve 102, passes through the first expansion valve 42, and then enters the direct cooling and direct heating heat exchanger 41 and returns to the inlet of the compressor 2 through the second expansion valve 101, thus realizing the air-conditioning cooling and battery cooling modes.

[0056] Figure 8 The figure shows a schematic diagram of an embodiment of the air-conditioning cooling and battery heating modes of the thermal management system 100 of the present application. In Figure 8In the illustrated embodiment, the thermal management system 100 includes an air-conditioning refrigeration and battery heating mode. In this mode, it is necessary to connect the first port 61 and the third port 63 of the first multi-way valve 6, and open the first expansion valve 42, the fourth expansion valve 102, the third expansion valve 33, and the switching valve 103. One path of refrigerant enters the first port 61 and the third port 63 of the first multi-way valve 6 from the outlet of the compressor 2, enters the direct cooling and direct heating heat exchanger 41, then enters the first expansion valve 42, then enters the fourth expansion valve 102 and the first heat exchanger 1, and finally returns to the compressor 2 through the switching valve 103. Another path of refrigerant enters the first port 61 and the third port 63 of the first multi-way valve 6 from the outlet of the compressor 2, enters the direct cooling and direct heating heat exchanger 41, then enters the first expansion valve 42, then enters the third heat exchanger 32 through the third expansion valve 33, and finally returns to the inlet of the compressor 2, thus realizing the air-conditioning refrigeration and battery heating mode.

[0057] Figure 9 The figure shows a schematic diagram of an embodiment of the air-conditioning heating mode of the thermal management system 100 of the present application. In Figure 9 In the illustrated embodiment, the thermal management system 100 includes an air-conditioning heating mode. In this mode, it is necessary to connect the first port 61 and the fourth port 64 of the first multi-way valve 6, and open the switching valve 103. The refrigerant enters the first port 61 and the fourth port 64 of the first multi-way valve 6 from the outlet of the compressor 2, enters the second heat exchanger 31, then passes through the fourth expansion valve 102, passes through the first heat exchanger 1, and finally returns to the inlet of the compressor 2 through the switching valve 103, thus realizing the air-conditioning heating mode.

[0058] Figure 10 The figure shows a schematic diagram of an embodiment of the battery heating mode of the thermal management system 100 of the present application. In Figure 10 In the illustrated embodiment, the thermal management system 100 includes a battery heating mode. In this mode, it is necessary to connect the first port 61 and the third port 63 of the first multi-way valve 6, and open the fourth expansion valve 102, the first expansion valve 42, and the switching valve 103. The refrigerant enters the first port 61 and the third port 63 of the first multi-way valve 6 from the outlet of the compressor 2, enters the direct cooling and direct heating heat exchanger 41, then passes through the first expansion valve 42, passes through the fourth expansion valve 102, enters the first heat exchanger 1, and then enters the switching valve 103, and finally returns to the inlet of the compressor 2, thus realizing the battery heating mode.

[0059] Figure 11 The figure shows a schematic diagram of an embodiment of the first air-conditioning heating and battery heating mode, as well as the air-conditioning heating and battery cooling mode of the thermal management system 100 of the present application. In Figure 11In the illustrated embodiment, the thermal management system 100 includes a first air-conditioning heating and battery heating mode and an air-conditioning heating and battery cooling mode. In the first air-conditioning heating and battery heating mode, there is a large difference between the air-conditioning heating temperature and the temperature required for heating the battery 200. A fixed threshold can be set. When the difference between the two exceeds this fixed threshold, it is necessary to connect the first port 61 and the fourth port 64 of the first multi-way valve 6, and open the first expansion valve 42, the second expansion valve 101, the fourth expansion valve 102, and the switching valve 103. One path of refrigerant enters the first port 61 and the fourth port 64 of the first multi-way valve 6 from the outlet of the compressor 2, enters the second heat exchanger 31, then passes through the fourth expansion valve 102 and the first heat exchanger 1, and then returns to the compressor 2 after entering the switching valve 103. Another path of refrigerant enters the first port 61 and the fourth port 64 of the first multi-way valve 6 from the outlet of the compressor 2, then enters the second heat exchanger 31, passes through the first expansion valve 42, then enters the direct cooling and direct heating heat exchanger 41, passes through the second expansion valve 101, and finally returns to the inlet of the compressor 2, thus realizing the first air-conditioning heating and battery heating mode. In the first air-conditioning heating and battery heating mode, the battery 200 is in the battery heating condition. The first expansion valve 42 needs to be set to the first opening range, and when the temperature of the battery 200 is higher during the heating process, the opening of the first expansion valve 42 in the first opening range can be adjusted to be smaller. In this embodiment, when using the heat of the battery 200 to implement air-conditioning heating, the system COP can be greater than 1, thereby reducing energy consumption. When the thermal management system 100 is in the air-conditioning heating and battery cooling mode, the flow path is similar to the first air-conditioning heating and battery heating mode. At this time, the battery 200 is in the battery cooling condition. The first expansion valve 42 needs to be set to the second opening range, and when the temperature of the battery 200 is lower during the cooling process, the opening of the first expansion valve 42 in the second opening range can be adjusted to be smaller, thus realizing the air-conditioning heating and battery cooling mode.

[0060] Figure 12 The figure shows a schematic diagram of an embodiment of the second air-conditioning heating and battery heating mode of the thermal management system 100 of the present application. In Figure 12In the illustrated embodiment, the thermal management system 100 includes a second air conditioning heating and battery heating mode. In this mode, when the difference between the air conditioning heating temperature and the temperature required for heating the battery 200 is small, a fixed threshold can be set. When the difference between the two does not exceed this fixed threshold, it is necessary to connect the first port 61 and the fourth port 64 of the first multi-way valve 6, and connect the first port 61 and the third port 63, and open the first expansion valve 42, the fourth expansion valve 102, and the switching valve 103. One path of refrigerant enters the first port 61 and the fourth port 64 of the first multi-way valve 6 from the outlet of the compressor 2, then enters the second heat exchanger 31, passes through the fourth expansion valve 102 and the first heat exchanger 1, and finally enters the switching valve 103 and returns to the compressor 2. Another path of refrigerant enters the first port 61 and the third port 63 of the first multi-way valve 6 from the outlet of the compressor 2, then enters the direct cooling and direct heating heat exchanger 41, passes through the first expansion valve 42, then enters the fourth expansion valve 102 and the first heat exchanger 1, passes through the switching valve 103, and finally returns to the inlet of the compressor 2, thus realizing the second air conditioning heating and battery heating mode.

[0061] Figure 13 The figure shows a schematic diagram of an embodiment of the air conditioning heating and dehumidifying mode of the thermal management system 100 of the present application. In Figure 13 In the illustrated embodiment, the thermal management system 100 includes an air conditioning heating and dehumidifying mode. In this mode, it is necessary to connect the first port 61 and the fourth port 64 of the first multi-way valve 6, and open the third expansion valve 33, the fourth expansion valve 102, and the switching valve 103. One path of refrigerant enters the first port 61 and the fourth port 64 of the first multi-way valve 6 from the outlet of the compressor 2, then enters the second heat exchanger 31, passes through the fourth expansion valve 102 and the first heat exchanger 1, and finally enters the switching valve 103 and returns to the compressor 2. Another path of refrigerant enters the first port 61 and the fourth port 64 of the first multi-way valve 6 from the outlet of the compressor 2, passes through the second heat exchanger 31, then enters the third expansion valve 33 and enters the third heat exchanger 32, and finally returns to the inlet of the compressor 2, thus realizing the air conditioning heating and dehumidifying mode.

[0062] Figure 14 The figure shows a schematic diagram of an embodiment of the air conditioning heating, dehumidifying and battery cooling mode of the thermal management system 100 of the present application. In Figure 14In the illustrated embodiment, the thermal management system 100 includes air-conditioning heating, dehumidification, and battery cooling modes. In this mode, it is necessary to connect the first port 61 and the fourth port 64 of the first multi-way valve 6, and open the first expansion valve 42, the second expansion valve 101, the third expansion valve 33, the fourth expansion valve 102, and the switching valve 103. One path of refrigerant enters the first port 61 and the fourth port 64 of the first multi-way valve 6 from the outlet of the compressor 2, then enters the second heat exchanger 31, passes through the third expansion valve 33 and the third heat exchanger 32, and finally returns to the compressor 2. Another path of refrigerant enters the first port 61 and the fourth port 64 of the first multi-way valve 6 from the outlet of the compressor 2, passes through the second heat exchanger 31, then enters the first expansion valve 42 and enters the direct cooling and direct heating heat exchanger 41, and finally returns to the inlet of the compressor 2 through the second expansion valve 101. There is also a path of refrigerant that enters the first port 61 and the fourth port 64 of the first multi-way valve 6 from the outlet of the compressor 2, passes through the second heat exchanger 31, then enters the fourth expansion valve 102 and passes through the first heat exchanger 1, and finally returns to the compressor 2 through the switching valve 103. In this way, the air-conditioning heating, dehumidification, and battery cooling modes are realized.

[0063] Figure 15 The figure shows a schematic diagram of an embodiment of the air-conditioning heating, dehumidification, and battery heating modes of the thermal management system 100 of the present application. In Figure 15 In the illustrated embodiment, the thermal management system 100 includes air-conditioning heating, dehumidification, and battery heating modes. In this mode, it is necessary to connect the first port 61 and the fourth port 64 of the first multi-way valve 6, and connect the first port 61 and the third port 63 of the first multi-way valve 6, and open the first expansion valve 42, the fourth expansion valve 102, the third expansion valve 33, and the switching valve 103. One path of refrigerant enters the first port 61 and the fourth port 64 of the first multi-way valve 6 from the outlet of the compressor 2, then enters the second heat exchanger 31, passes through the fourth expansion valve 102 and the first heat exchanger 1, and finally returns to the compressor 2 through the switching valve 103. Another path of refrigerant enters the first port 61 and the third port 63 of the first multi-way valve 6 from the outlet of the compressor 2, enters the direct cooling and direct heating heat exchanger 41, then enters the first expansion valve 42, passes through the third expansion valve 33 and enters the third heat exchanger 32, and finally returns to the inlet of the compressor 2. In this way, the air-conditioning heating, dehumidification, and battery heating modes are realized.

[0064] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the present application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of protection of the present application.

Claims

1. A thermal management system, characterized in that: The thermal management system includes a first heat exchanger, a compressor, an air-conditioning component, a battery heat exchange component for exchanging heat from a vehicle's battery, and a motor heat exchange circuit for exchanging heat from a vehicle's motor. The first heat exchanger includes a refrigerant side and a coolant side. The refrigerant side is respectively connected to the compressor, the battery heat exchange component, and the air-conditioning component, and the coolant side is connected to the motor heat exchange circuit.

2. The thermal management system according to claim 1, characterized in that: The thermal management system includes a rapid heating mode, the motor heat exchange circuit includes a water heater and a first one-way pump, the water heater is connected to the first heat exchanger and the first one-way pump respectively, and when the thermal management system is in the rapid heating mode, the first one-way pump is turned on.

3. The thermal management system according to claim 2, characterized in that: The thermal management system further includes a radiator and a second multi-way valve. The radiator is connected in parallel with the first heat exchanger and the water heater. The second multi-way valve is arranged in the motor heat exchange circuit and connected to one end of the radiator.

4. The thermal management system according to claim 1, characterized in that: The thermal management system includes a first multi-way valve connected to one end of the compressor, the air conditioning component includes a second heat exchanger, the second heat exchanger is connected to the first multi-way valve and is connected in parallel with the first heat exchanger, the first multi-way valve includes a first connection state, a second connection state and a third connection state, When the first multi-way valve is switched to a first communication state, the first multi-way valve communicates one end of the compressor with the second heat exchanger; or When the first multi-way valve is switched to the second connection state, the first multi-way valve connects one end of the compressor and the battery heat exchange assembly; or When the first multi-way valve is switched to the third connecting state, the first multi-way valve connects one end of the compressor with the second heat exchanger, and connects one end of the compressor with the battery heat exchange assembly.

5. The thermal management system according to claim 4, characterized in that: The battery heat exchange assembly includes a direct cooling and direct heating heat exchanger, which is used to exchange heat for the battery. One end of the direct cooling and direct heating heat exchanger is connected to the first multi-way valve, and the other end is connected to the first heat exchanger.

6. The thermal management system according to claim 5, characterized in that: The thermal management system includes a battery heating condition and a battery cooling condition. The battery heat exchange assembly also includes a first expansion valve, which is connected between the first heat exchanger and the direct cooling and direct heating heat exchanger. The first expansion valve includes a first opening range and a second opening range, and the first opening range is larger than the second opening range. When the battery is in a battery heating condition, the first expansion valve is in the first opening range, and when the battery is in a battery cooling condition, the first expansion valve is in the second opening range.

7. The thermal management system according to claim 4, characterized in that: The thermal management system includes a rapid heating mode, and the thermal management system also includes a second expansion valve. The compressor, the first multi-way valve and the second expansion valve are connected to each other. When the thermal management system is in the rapid heating mode, the first multi-way valve switches to a second connected state, and the second expansion valve opens.

8. The thermal management system according to claim 1, characterized in that: The air conditioning component further includes a third heat exchanger and a third expansion valve connected to the third heat exchanger. The third heat exchanger and the third expansion valve are connected in parallel with the first heat exchanger and are connected to the compressor.

9. The thermal management system according to claim 1, characterized in that: The thermal management system comprises a fourth expansion valve, and the fourth expansion valve is provided on a side of the first heat exchanger connected to the air conditioning component; and / or The first heat exchanger comprises a water-cooled condenser; and / or The compressor comprises an enthalpy-increasing compressor; and / or A gas-liquid separator is provided upstream of the compressor.

10. A vehicle, characterized in that: The vehicle comprises a battery, an electric motor and a thermal management system as claimed in any one of claims 1 to 9 above.

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