Thermal management system

Abstract

The invention provides a heat management system which comprises a compressor, a first heat exchanger, a second heat exchanger, a third heat exchanger, a first valve and a second valve, the first heat exchanger comprises a first heat exchange part and a second heat exchange part which are isolated from each other, and the second heat exchanger comprises a third heat exchange part and a fourth heat exchange part which are isolated from each other. The third heat exchanger comprises a fifth heat exchange part and a sixth heat exchange part which are isolated from each other, the compressor, the first heat exchange part, the first valve and the third heat exchange part can communicate with each other, and the compressor, the first heat exchange part, the second valve and the fifth heat exchange part can communicate with each other; the heat management system further comprises a battery heat exchange device, a first pump and a fourth heat exchanger, the fourth heat exchanger can exchange heat with the atmospheric environment, and when the heat management system is in a certain working mode, any one of the sixth heat exchange part, the second heat exchange part and the fourth heat exchanger communicates with the first pump and the battery heat exchange device. And the heat requirements of the battery under different environmental conditions can be better met.

Description

Technical Field

[0001] This application relates to the field of vehicle thermal management, and more particularly to a thermal management system. Background Technology

[0002] A vehicle's thermal management system can perform functions such as cooling, heating, and ventilation of the air inside the vehicle. A related technology discloses a thermal management system including a passenger compartment heat exchanger and a battery heat exchanger arranged in parallel. The water-side circuits of the passenger compartment heat exchanger and the battery heat exchanger independently cool the passenger compartment and battery, respectively. However, this system can only regulate the battery temperature using the water-side circuit of the battery heat exchanger, resulting in a relatively limited method for regulating battery temperature and making it difficult to meet the battery's heat requirements under different environmental conditions. Summary of the Invention

[0003] This application aims to provide a thermal management system designed to better meet the thermal requirements of batteries under different environmental conditions.

[0004] To achieve the above objectives, this application provides a thermal management system, including a compressor, a first heat exchanger, a second heat exchanger, a third heat exchanger, a first valve, and a second valve. The first heat exchanger includes a first heat exchange section and a second heat exchange section that are isolated from each other. The second heat exchanger includes a third heat exchange section and a fourth heat exchange section that are isolated from each other. The third heat exchanger includes a fifth heat exchange section and a sixth heat exchange section that are isolated from each other. The compressor, the first heat exchange section, the first valve, and the third heat exchange section are interconnected. The compressor, the first heat exchange section, the second valve, and the fifth heat exchange section are also interconnected.

[0005] The thermal management system further includes a battery heat exchange device, a first pump, and a fourth heat exchanger. The fourth heat exchanger is capable of exchanging heat with the atmospheric environment. In a certain operating mode, any one of the sixth heat exchange unit, the second heat exchange unit, and the fourth heat exchanger is connected to the first pump and the battery heat exchange device.

[0006] The thermal management system provided in this application includes a compressor, a first heat exchanger, a second heat exchanger, a third heat exchanger, a first valve, a second valve, a battery heat exchange device, a first pump, and a fourth heat exchanger. In a certain working mode, any one of the sixth heat exchange section, the second heat exchange section, and the fourth heat exchanger is connected to the first pump and the battery heat exchange device, which can flexibly adjust the battery temperature according to different environmental conditions to better meet the heat demand of the battery under different environmental conditions. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some of the accompanying drawings of the embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0008] Figure 1 This is a connection diagram of the thermal management system of this application;

[0009] Figure 2 yes Figure 1 A schematic diagram of the second passenger cabin cooling mode of the central thermal management system;

[0010] Figure 3 yes Figure 1 A schematic diagram of the first hybrid cooling mode of the central thermal management system;

[0011] Figure 4 yes Figure 1 A schematic diagram of the first passenger cabin cooling mode of the central thermal management system;

[0012] Figure 5 yes Figure 1 A schematic diagram of the first battery cooling mode of the central thermal management system;

[0013] Figure 6 yes Figure 1 A schematic diagram of the battery heat dissipation mode of the medium thermal management system;

[0014] Figure 7 yes Figure 1 A schematic diagram of the heating mode for the fourth passenger cabin in the central thermal management system;

[0015] Figure 8 yes Figure 1 A schematic diagram of the heating mode for the fifth passenger cabin in the central thermal management system;

[0016] Figure 9 yes Figure 1 A schematic diagram of the heating mode for the sixth passenger cabin in the central thermal management system;

[0017] Figure 10 yes Figure 1 A schematic diagram of the second refrigeration and dehumidification mode of the central heat management system;

[0018] Figure 11 yes Figure 1 A schematic diagram of the first cooling and dehumidification mode of the central heat management system;

[0019] Figure 12 yes Figure 1 A schematic diagram of the third heating and dehumidification mode of the central heat management system;

[0020] Figure 13 yes Figure 1 A schematic diagram of the heating and dehumidification mode of the second passenger cabin in the central thermal management system;

[0021] Figure 14 yes Figure 1 A schematic diagram of the heating and dehumidification mode of the first passenger cabin in the central thermal management system;

[0022] Figure 15 yes Figure 1 A schematic diagram of the heating mode for the seventh passenger cabin in the central thermal management system;

[0023] Figure 16 yes Figure 1 A schematic diagram of the heating mode for the second passenger cabin in the central thermal management system;

[0024] Figure 17 yes Figure 1 A schematic diagram of the heating mode for the first passenger cabin of the central thermal management system;

[0025] Figure 18 yes Figure 1 A schematic diagram of the heating mode for the third passenger cabin in the central thermal management system;

[0026] Figure 19 yes Figure 1 A schematic diagram of the motor cooling mode in the medium-temperature management system. Detailed Implementation

[0027] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0028] The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The singular forms “a,” “the,” and “the” used in this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0029] It should be understood that the terms "first," "second," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one; "multiple" indicates two or more. Unless otherwise stated, terms such as "front," "rear," "lower," and / or "upper" are for illustrative purposes only and are not limited to a location or spatial orientation. Terms such as "comprising" or "including" indicate that the elements or objects preceding "comprising" encompass the elements or objects listed following "comprising" or "including" and their equivalents, but do not exclude other elements or objects.

[0030] This application proposes a thermal management system; please refer to [link / reference]. Figure 1 It includes a compressor 1, a first heat exchanger 2, a second heat exchanger 3, a third heat exchanger 4, a first valve 5, and a second valve 6. The first heat exchanger 2 includes a first heat exchange section 201 and a second heat exchange section 202 that are isolated from each other. The second heat exchanger 3 includes a third heat exchange section 31 and a fourth heat exchange section 32 that are isolated from each other. The third heat exchanger 4 includes a fifth heat exchange section 41 and a sixth heat exchange section 42 that are isolated from each other. Please refer to [link / reference]. Figure 2 , Figure 3 and Figure 5 The compressor 1, the first heat exchanger 201, the first valve 5, and the third heat exchanger 31 are interconnected; the compressor 1, the first heat exchanger 201, the second valve 6, and the fifth heat exchanger 41 are interconnected; the first valve 5 and the second valve 6 have a throttling function; please refer to [link / reference]. Figure 1 The thermal management system also includes a battery heat exchanger 11, a first pump 12, and a fourth heat exchanger 18. The fourth heat exchanger 18 is capable of exchanging heat with the atmospheric environment. Please refer to [link to relevant documentation]. Figures 3 to 6 , Figure 11 , Figure 13 , Figure 14 , Figures 16 to 18 In a certain operating mode, at least one of the sixth heat exchanger 42, the second heat exchanger 202, and the fourth heat exchanger 18 is connected to the first pump 12 and the battery heat exchange device 11. The thermal management system provided in this application includes a compressor 1, a first heat exchanger 2, a second heat exchanger 3, a third heat exchanger 4, a first valve 5, a second valve 6, a battery heat exchange device 11, a first pump 12, and a fourth heat exchanger 18. In a certain operating mode, any one of the sixth heat exchanger 42, the second heat exchanger 202, and the fourth heat exchanger 18 is connected to the first pump 12 and the battery heat exchange device 11, allowing for flexible adjustment of the battery temperature according to different environmental conditions, better meeting the battery's heat requirements under different environmental conditions.

[0031] In some embodiments, the components of the thermal management system are connected by pipes to form two main systems: a refrigerant system and a coolant system, which are isolated from each other and not interconnected. Refrigerant flows through the refrigerant system, and coolant flows through the coolant system. The refrigerant can be R134A, carbon dioxide, or other heat exchange media, and the coolant can be a mixture of ethanol and water or other cooling media. The coolant system includes a battery water-side loop. This battery water-side loop includes a battery heat exchange device 11 and a first pump 12. The battery water-side loop and the refrigerant system can exchange heat through at least one of a third heat exchanger 4, a first heat exchanger 2, and a fourth heat exchanger 18. The components of the battery water-side loop can be indirectly connected through pipes or valves, or integrated into a single structure. The first pump 12 provides power for the flow of coolant in the battery water-side loop. The specifications of the first pump 12 can be selected according to the requirements of the thermal management system; the first pump 12 is a water pump. The battery heat exchange device 11 is used for thermal management of the battery. Optionally, the battery heat exchange device 11 can be an integrated component with the battery as a whole, or it can be a separate component that is then assembled with the battery.

[0032] Please see Figures 3 to 6 , Figure 11 , Figure 13 , Figure 14 , Figures 16 to 18 In some embodiments, the thermal management system has at least one of a first operating mode, a second operating mode, and a third operating mode; please refer to [link to relevant documentation]. Figure 3 , Figure 5 , Figure 11 , Figure 14 and Figure 17 When the battery requires cooling and is cooled by the third heat exchanger 4, the thermal management system is in the first working mode. In the first working mode, the compressor 1 is in the on state, the second valve 6 is in the throttling state, the compressor 1, the first heat exchange section 201, the second valve 6, and the fifth heat exchange section 41 are connected, the battery heat exchange device 11 is connected to the sixth heat exchange section 42 and the first pump 12, and the fifth heat exchange section 41 exchanges heat with the sixth heat exchange section 42. The third heat exchanger 4 is used to make the coolant and refrigerant in the battery water-side circuit where the sixth heat exchange section 42 is located exchange heat to cool the battery.

[0033] Please see to Figure 13 , Figure 16 and Figure 18When the battery requires heating and is heated by the first heat exchanger 2, the thermal management system is in the second working mode. In the second working mode, the compressor 1 is in the on state, the first valve 5 is in the throttling state, the compressor 1, the first heat exchange section 201, the first valve 5, and the third heat exchange section 31 are connected, the battery heat exchange device 11, the second heat exchange section 202, and the first pump 12 are connected, the battery heat exchange device 11 is connected to the sixth heat exchange section 42 and the first pump 12, and the first heat exchange section 201 exchanges heat with the second heat exchange section 202. The first heat exchanger 2 is used to heat the battery by exchanging heat between the coolant and refrigerant in the battery water-side circuit where the battery heat exchange device 11 is located. In addition, the coolant in the passenger cabin heating water-side circuit is mixed with the coolant in the battery water-side circuit where the sixth heat exchange section 42 is located to reduce the problem of the battery cell life being affected by excessively high water temperature.

[0034] Please see to Figure 4 and Figure 6 When the battery has a low-temperature heat dissipation requirement, the thermal management system is in the third working mode. In some embodiments, in the third working mode, the battery heat exchange device 11 is connected to the second heat exchange section 202, the fourth heat exchanger 18, and the first pump 12. The battery heat exchange device 11 is connected to the atmospheric environment through the fourth heat exchanger 18 to achieve low-temperature heat dissipation, that is, to dissipate heat from the battery.

[0035] Please see Figure 3 , Figure 5 , Figure 11 , Figure 14 and Figure 17 In some embodiments, the first operating mode includes at least one of a first hybrid cooling mode, a first battery cooling mode, a first cooling and dehumidifying mode, a first passenger cabin heating and dehumidifying mode, and a first passenger cabin heating mode; please refer to [link to relevant documentation]. Figure 3 When both the passenger cabin and the battery require cooling, the thermal management system operates in the first hybrid cooling mode; please refer to [link to relevant documentation]. Figure 5 When there is no demand in the passenger cabin but a need for battery cooling, the thermal management system is in the first battery cooling mode; please refer to [link to relevant documentation]. Figure 11 When the passenger cabin requires cooling and dehumidification, and the battery requires cooling, the thermal management system operates in the first cooling and dehumidification mode; please refer to [link to relevant documentation]. Figure 14 When the passenger cabin requires heating and dehumidification, and the battery requires cooling, the thermal management system operates in the primary passenger cabin heating and dehumidification mode; please refer to [link to relevant documentation]. Figure 17 When the passenger cabin requires heating and the waste heat from the battery can be recovered, the thermal management system is in the first passenger cabin heating mode.

[0036] In some embodiments, please refer to Figure 3 , Figure 5 , Figure 11 , Figure 14 and Figure 17 In order to meet the needs of battery cooling or waste heat recovery, in any of the following modes: first hybrid cooling mode, first battery cooling mode, first cooling and dehumidification mode, first passenger cabin heating and dehumidification mode, and first passenger cabin heating mode, compressor 1 is in the open state, second valve 6 is in the throttling state, compressor 1, first heat exchange section 201, second valve 6, and fifth heat exchange section 41 are connected, battery heat exchange device 11 is connected to sixth heat exchange section 42 and first pump 12, fifth heat exchange section 41 and sixth heat exchange section 42 exchange heat, and the coolant and refrigerant in the battery water side circuit where the sixth heat exchange section 42 is located are exchanged for heat to cool the battery.

[0037] Please see Figure 17 In the first passenger cabin heating mode, when the passenger cabin has a heating demand and the battery has sufficient residual heat, the residual heat of the coolant in the battery water-side circuit where the sixth heat exchange unit 42 is located is absorbed by the fifth heat exchange unit 41 and used to heat the passenger cabin.

[0038] In some embodiments, please refer to Figure 3 , Figure 11 , Figure 14 To meet the passenger cabin's cooling, dehumidification, or heating / dehumidification needs, the thermal management system also includes a fifth heat exchanger 15 and a second pump 16. In any of the first mixed cooling mode, the first dehumidification mode, and the first passenger cabin heating / dehumidification mode, the compressor 1 is in the on state, the first valve 5 is in a throttling state, the compressor 1, the first heat exchange section 201, the first valve 5, and the third heat exchange section 31 are connected, the fifth heat exchanger 15, the fourth heat exchange section 32, and the second pump 16 are connected, and the third heat exchange section 31 exchanges heat with the fourth heat exchange section 32. The second heat exchanger 3 allows the coolant and refrigerant in the passenger cabin's cooling water side circuit where the fifth heat exchanger 15 is located to exchange heat, thus cooling the passenger cabin and achieving either cooling or heating / dehumidification. Please refer to [link to relevant documentation]. Figure 3 In the first mixed cooling mode, the second heat exchanger 3 and the third heat exchanger 4 can independently control the different temperature requirements of the crew compartment and the battery. During mixed cooling, the water temperatures of the two circuits do not affect each other, and the target water temperature can be reached more quickly.

[0039] In some embodiments, the refrigerant circuit is an indirect system, which uses a first heat exchanger 2, a second heat exchanger 3, and a third heat exchanger 4 to transfer heat or cold to the passenger compartment and battery through a coolant circuit. This can shorten the refrigerant circuit, reduce the amount of refrigerant charged, and make the refrigerant circuit modular, requiring less space for layout.

[0040] In some embodiments, please refer to Figure 11 , Figure 14 and Figure 17To meet the needs of passenger cabin cooling, dehumidification, and heat replenishment, or passenger cabin heating and dehumidification, or passenger cabin heating, the thermal management system also includes a sixth heat exchanger 8 and a third pump 9. In any of the first cooling and dehumidification mode, the first passenger cabin heating and dehumidification mode, and the first passenger cabin heating mode, the sixth heat exchanger 8, the second heat exchange section 202, and the third pump 9 are connected, and the first heat exchange section 201 exchanges heat with the second heat exchange section 202; the first heat exchanger 2 is used to make the coolant and refrigerant in the passenger cabin heating water side circuit where the sixth heat exchanger 8 is located exchange heat to replenish or heat the passenger cabin.

[0041] In some embodiments, the coolant system further includes a motor water-side loop, which includes a motor heat exchanger 19 and at least one of a first pump 12, a second pump 16, and a third pump 9. The motor water-side loop and the refrigerant system can exchange heat through at least one of the first heat exchanger 2 and the second heat exchanger 3. The components of the motor water-side loop can be indirectly connected through pipes or valves, or they can be integrated into a single structure. At least one of the first pump 12, the second pump 16, and the third pump 9 is used to provide power for the flow of coolant in the motor water-side loop. The specifications of each pump can be selected according to the needs of the thermal management system. The first pump 12, the second pump 16, and the third pump 9 are water pumps. The motor heat exchanger 19 can be used for thermal management of any one or more devices such as electrical equipment, motors, and motor controllers. Optionally, the motor heat exchanger 19 can be an integrated component with the electrical equipment, motor, and motor controller, or it can be a separate component assembled with the electrical equipment, motor, and motor controller. For ease of description, the following description will use the motor heat exchanger 19 for thermal management of the motor as an example.

[0042] Please see Figure 3 , Figure 5 , Figure 11 , Figure 14 and Figure 17 In some embodiments, the thermal management system further includes a motor heat exchanger 19, see [link to relevant documentation]. Figure 3 , Figure 5 , Figure 11 In any of the first hybrid cooling mode, the first battery cooling mode, and the first cooling dehumidification mode, in some embodiments, when the motor has a heat dissipation requirement, the fourth heat exchanger 18, the motor heat exchange device 19, the second heat exchange section 202, and the third pump 9 are connected. Heat exchange is achieved between the fourth heat exchanger 18 and the atmospheric environment, thereby dissipating heat from the motor heat exchange device 19, i.e., cooling the motor. The fourth heat exchanger 18 is an outdoor heat exchanger.

[0043] Please see Figure 14 and Figure 17In some embodiments, when the motor has sufficient residual heat, in either the first passenger cabin heating / dehumidification mode or the first passenger cabin heating mode, the compressor 1 is in the on state, the first valve 5 is in the throttling state, the compressor 1, the first heat exchanger 201, the first valve 5, and the third heat exchanger 31 are connected, the motor heat exchanger 19, the fourth heat exchanger 18, the fourth heat exchanger 32, and the second pump 16 are connected, the third heat exchanger 31 exchanges heat with the fourth heat exchanger 32, and the second heat exchanger 3 allows the coolant and refrigerant in the motor water-side circuit where the motor heat exchanger 19 is located to exchange heat, thereby cooling the motor. Please refer to [link to relevant documentation]. Figure 14 and Figure 17 In the first passenger cabin heating and dehumidification mode and the first passenger cabin heating mode, when the passenger cabin has a heating demand and the motor has sufficient waste heat, the waste heat of the coolant in the motor water-side circuit where the motor heat exchanger 19 is located is absorbed by the third heat exchanger 31 and used to heat the passenger cabin. In the first passenger cabin heating and dehumidification mode, when atmospheric heat is available, the fourth heat exchanger 18 absorbs heat from the atmospheric environment through heat exchange with it. The waste heat of the coolant in the motor water-side circuit where the fourth heat exchanger 18 is located is absorbed by the third heat exchanger 31 and used to heat the passenger cabin.

[0044] Please see Figure 13 , Figure 16 and Figure 18 The second operating mode includes at least one of the following: second passenger cabin heating and dehumidification, second passenger cabin heating mode, and third passenger cabin heating mode. Please refer to [link / reference]. Figure 13 When the passenger cabin requires heating and dehumidification, and the battery requires heating, the thermal management system switches to the second passenger cabin heating and dehumidification mode; please refer to [link / reference]. Figure 16 and Figure 18 When both the passenger cabin and the battery require heating, the thermal management system operates in either the second or third passenger cabin heating mode. Please refer to [link / reference]. Figure 13 , Figure 16 and Figure 18In some embodiments, the thermal management system further includes a sixth heat exchanger 8 and a third pump 9. In any of the following modes—second passenger cabin heating and dehumidification, second passenger cabin heating mode, and third passenger cabin heating mode—compressor 1 is in the on state, first valve 5 is in a throttling state, compressor 1, first heat exchange section 201, first valve 5, and third heat exchange section 31 are connected. First heat exchange section 201 exchanges heat with second heat exchange section 202. Battery heat exchange device 11, second heat exchange section 202, and first pump 12 are connected. The sixth heat exchanger 8, second heat exchange section 202, and third pump 9 are also connected. Pump 9 is connected, and battery heat exchange device 11, sixth heat exchange section 42 and first pump 12 are connected. The first heat exchanger 2 is used to exchange heat between the coolant and refrigerant in the passenger cabin heating water side circuit where the sixth heat exchanger 8 is located to heat the passenger cabin. The first heat exchanger 2 is also used to exchange heat between the coolant and refrigerant in the battery water side circuit where the battery heat exchange device 11 is located to heat the battery. Furthermore, by mixing the coolant in the passenger cabin heating water side circuit with the coolant in the battery water side circuit where the sixth heat exchange section 42 is located, the problem of battery cell life being affected by excessively high water temperature is reduced.

[0045] Please see Figure 13 In some embodiments, the thermal management system further includes a fifth heat exchanger 15 and a second pump 16. Under the second passenger cabin heating and dehumidification, the fifth heat exchanger 15, the fourth heat exchange section 32 and the second pump 16 are connected, and the third heat exchange section 31 exchanges heat with the fourth heat exchange section 32. By using the second heat exchanger 3 to exchange heat between the coolant and refrigerant in the passenger cabin cooling water side circuit where the fifth heat exchanger 15 is located, the passenger cabin can be cooled, thereby achieving passenger cabin heating and dehumidification.

[0046] Please see Figure 13 and Figure 16 In some embodiments, the thermal management system further includes a motor heat exchanger 19 and a second pump 16. When the motor has sufficient waste heat, in either the second passenger cabin heating and dehumidification mode or the second passenger cabin heating mode, the motor heat exchanger 19, the fourth heat exchanger 18, the fourth heat exchange section 32, and the second pump 16 are connected. The second heat exchanger 32 is used to exchange heat between the coolant and refrigerant in the motor water-side circuit where the motor heat exchanger 19 is located, thus cooling the motor. In the second passenger cabin heating mode, when the motor has sufficient waste heat, the waste heat of the coolant in the motor water-side circuit where the motor heat exchanger 19 is located is absorbed by the third heat exchange section 31 and used to heat the passenger cabin and battery.

[0047] Please see Figure 18In some embodiments, the thermal management system further includes a third valve 7, which has a throttling function. The third valve 7 is connected in series between the inlet and outlet of the compressor 1. In extremely low temperature environments, when the passenger cabin needs to be heated rapidly, the thermal management system is in a third passenger cabin heating mode. In this mode, the first valve 5 and the third valve 7 are in a throttling state, and the outlet of the compressor 1, the third valve 7, and the inlet of the compressor 1 are connected. The compressor 1, the first heat exchange section 201, the first valve 5, and the third heat exchange section 31 are also connected. The third valve 7 is used to bypass hot air, meeting the need for rapid heating of the passenger cabin. In some embodiments, the first valve 5 and the third valve 7 are electronic expansion valves or thermostatic expansion valves.

[0048] Please see Figure 13 , Figure 16 and Figure 18 In some embodiments, the thermal management system further includes a fourth valve 13 and a fifth valve 14. The fourth valve 13 includes ports a, b, and c, and the fifth valve 14 includes ports a and b. Port a of the fourth valve 13 is connected to the third pump 9, port b is connected to the sixth heat exchanger 8, and port c is connected to the first pump 12. The fifth valve 14 is connected in series between the battery heat exchanger 11 and the second heat exchange section 202. (See also...) Figure 13 , Figure 16 and Figure 18 In any of the following modes—second passenger cabin heating and dehumidification, second passenger cabin heating mode, and third passenger cabin heating mode—the battery heat exchanger 11, ports a and b of the fifth valve 14, the second heat exchange section 202, ports a and c of the fourth valve 13, and the first pump 12 are connected; the sixth heat exchanger 8, the second heat exchange section 202, the third pump 9, ports a and b of the fourth valve 13 are also connected. In some embodiments, the fourth valve 13 has a proportional adjustment function, which allows control of the coolant flow rate at its ports b and c, adjusting the flow rate ratio of the coolant in the two flow paths to achieve heat distribution between the passenger cabin and the battery. In some embodiments, the fourth valve 13 is a three-way valve, which allows the sixth heat exchanger 8 to be connected in parallel with the battery heat exchanger 11, enabling mixing of the coolant in the passenger cabin heating water-side loop and the coolant in the battery water-side loop. The fifth valve 14 has a shut-off state and a fully open state. If the valve is in the shut-off state, there is no refrigerant flow in the branch where the valve is located; if the valve is in the fully open state, there can be refrigerant flow in the branch where the valve is located.

[0049] Please see Figure 4 and Figure 6In some embodiments, the third operating mode includes at least one of the first passenger cabin cooling mode and the battery cooling mode; see also Figure 6 In some embodiments, when there is no demand in the passenger cabin but the battery has a need for low-temperature heat dissipation, the thermal management system is in battery heat dissipation mode. In battery heat dissipation mode, the compressor 1 is in the off state, and the battery heat exchange device 11 is connected to the second heat exchange section 202, the fourth heat exchanger 18, and the first pump 12. Heat exchange is achieved between the battery heat exchange device 11 and the atmospheric environment through the fourth heat exchanger 18, which is to dissipate heat from the battery.

[0050] Please see Figure 4 In some embodiments, when the passenger cabin has a cooling requirement and the battery has a low-temperature heat dissipation requirement, the thermal management system is in the first passenger cabin cooling mode. The thermal management system also includes a fifth heat exchanger 15 and a second pump 16. In the first passenger cabin cooling mode, the compressor 1 is in the on state, the first valve 5 is in the throttling state, the compressor 1, the first heat exchange section 201, the first valve 5, and the third heat exchange section 31 are connected, the fifth heat exchanger 15, the fourth heat exchange section 32 and the second pump 16 are connected, the third heat exchange section 31 and the fourth heat exchange section 32 exchange heat, and the second heat exchanger 3 is used to make the coolant and refrigerant in the passenger cabin cooling water side circuit where the fifth heat exchanger 15 is located exchange heat to cool the passenger cabin, thus achieving passenger cabin cooling. The battery heat exchange device 11 is connected to the second heat exchange section 202, the fourth heat exchanger 18 and the first pump 12, and heats the battery heat exchange device 11 by exchanging heat with the atmospheric environment through the fourth heat exchanger 18, thus achieving heat dissipation of the battery heat exchange device 11, that is, heat dissipation of the battery.

[0051] Please see Figure 4 and Figure 6 In some embodiments, the thermal management system further includes a motor heat exchange device 19. In the third operating mode, when the motor has a heat dissipation requirement, the battery heat exchange device 11, the motor heat exchange device 19, the second heat exchange section 202, the fourth heat exchanger 18, and the first pump 12 are connected. Heat exchange is achieved between the fourth heat exchanger 18 and the atmospheric environment, thereby dissipating heat from the motor heat exchange device 19, i.e., cooling the motor. In some embodiments, the thermal management system further includes a third pump 9, which is connected to the fourth heat exchanger 18, the motor heat exchange device 19, the second heat exchange section 202, and the third pump 9. In a specific embodiment, the third pump 9 is connected in series with the second heat exchange section 202.

[0052] In some embodiments, please refer to Figure 2When the passenger cabin requires cooling, the battery does not, but the motor requires cooling, the thermal management system operates in the second passenger cabin cooling mode. In this mode, compressor 1 is on, the first valve 5 is throttling, and compressor 1, the first heat exchanger 201, the first valve 5, and the third heat exchanger 31 are connected. The fifth heat exchanger 15, the fourth heat exchanger 32, and the second pump 16 are also connected. The third heat exchanger 31 exchanges heat with the fourth heat exchanger 32. The second heat exchanger 31 facilitates heat exchange between the coolant and refrigerant in the passenger cabin's chilled water side circuit where the fifth heat exchanger 15 is located, thus cooling the passenger cabin. The fourth heat exchanger 18, the motor heat exchanger 19, the second heat exchanger 202, and the third pump 9 are connected. The fourth heat exchanger 18 exchanges heat with the atmospheric environment, thus dissipating heat from the motor heat exchanger 19, which in turn cools the motor. The fourth heat exchanger 18 is an outdoor heat exchanger.

[0053] In some embodiments, the thermal management system further includes at least one of a fourth passenger cabin heating mode and a fifth passenger cabin heating mode. See [link to relevant documentation]. Figure 7 and Figure 8 When the passenger cabin requires heating, the battery does not, but the motor requires cooling, the thermal management system operates in the fourth or fifth passenger cabin heating mode. Please refer to [link / reference needed]. Figure 7 and Figure 8 In the fourth and fifth passenger cabin heating modes, compressor 1 is in the on state, first valve 5 is in the throttling state, compressor 1, first heat exchange section 201, first valve 5, and third heat exchange section 31 are connected, first heat exchange section 201 exchanges heat with second heat exchange section 202, sixth heat exchanger 8, second heat exchange section 202 and third pump 9 are connected, and the first heat exchanger 2 is used to make the coolant and refrigerant in the passenger cabin heating water side circuit where the sixth heat exchanger 8 is located exchange heat to heat the passenger cabin.

[0054] When ambient heat is available, the thermal management system operates in the fourth passenger cabin heating mode. Please refer to [link / reference needed]. Figure 7 In the fourth passenger cabin heating mode, the motor heat exchanger 19, the fourth heat exchanger 18, the fourth heat exchange section 32, and the second pump 16 are connected, and the third heat exchange section 31 exchanges heat with the fourth heat exchange section 32. The fourth heat exchanger 18 absorbs heat from the atmospheric environment through heat exchange with the atmospheric environment, and the waste heat of the coolant in the motor water-side circuit where the fourth heat exchanger 18 is located is absorbed by the third heat exchange section 31 and used to heat the passenger cabin.

[0055] When there is a heating demand in the passenger cabin and there is sufficient waste heat from the motor, the thermal management system operates in the fifth passenger cabin heating mode. Please refer to [link / reference needed]. Figure 8In the fifth passenger cabin heating mode, the motor heat exchanger 19, the fourth heat exchange section 32, and the second pump 16 are connected, and the third heat exchange section 31 exchanges heat with the fourth heat exchange section 32. The waste heat of the coolant in the motor water-side circuit where the motor heat exchanger 19 is located is absorbed by the third heat exchange section 31 and used to heat the passenger cabin.

[0056] In some embodiments, the thermal management system further includes a liquid storage tank 25 and a seventh heat exchanger, the seventh heat exchanger including a seventh heat exchange section 241 and an eighth heat exchange section 242 capable of heat exchange, wherein the liquid storage tank 25 is connected in series to the outlet of the first heat exchange section 201, the seventh heat exchange section 241 is connected in series between the liquid storage tank 25 and the first valve 5, and the eighth heat exchange section 242 is connected in series between at least one of the third heat exchange section 31 and the fifth heat exchange section 41 and the inlet of the compressor 1.

[0057] In some embodiments, the thermal management system also has a sixth passenger cabin heating mode; see [link to relevant documentation] for details. Figure 9 When the passenger cabin requires heating, the battery does not, and the motor has sufficient waste heat to recover, the thermal management system operates in the sixth passenger cabin heating mode. Please refer to [link / reference needed]. Figure 9 In the sixth passenger cabin heating mode, compressor 1 is off, and the sixth heat exchanger 8, the second heat exchange section 202, and the third pump 9 are connected. The fourth heat exchanger 18, the fourth heat exchange section 32, the second pump 16, the motor heat exchange device 19, the second heat exchange section 202, and the third pump 9 are also connected. The waste heat of the coolant in the motor water-side circuit where the motor heat exchange device 19 is located can be absorbed by the second heat exchange section 202 to provide heating for the passenger cabin.

[0058] In some embodiments, the thermal management system also has a second cooling and dehumidification mode; see [link to relevant documentation] for details. Figure 10 When the passenger cabin requires cooling and dehumidification, but the battery does not, and the motor needs cooling, the thermal management system operates in the second cooling and dehumidification mode. Please refer to [link to relevant documentation]. Figure 10In the second refrigeration and dehumidification mode, compressor 1 is in the on state, first valve 5 is in the throttling state, compressor 1, first heat exchange section 201, first valve 5, and third heat exchange section 31 are connected, fifth heat exchanger 15, fourth heat exchange section 32, and second pump 16 are connected, third heat exchange section 31 exchanges heat with fourth heat exchange section 32, and the second heat exchanger 3 allows the coolant and refrigerant in the passenger compartment's cooling water side circuit where the fifth heat exchanger 15 is located to exchange heat to cool the passenger compartment, thus achieving passenger compartment refrigeration and dehumidification. Sixth heat exchanger 8, second heat exchange section 202, and third pump 9 are connected, and the first heat exchanger 2 allows the coolant and refrigerant in the passenger compartment's heating water side circuit where the sixth heat exchanger 8 is located to exchange heat to supplement the passenger compartment's heat. Fourth heat exchanger 18, motor heat exchange device 19, second heat exchange section 202, and third pump 9 are connected, and the fourth heat exchanger 18 exchanges heat with the atmospheric environment to dissipate heat from the motor heat exchange device 19, that is, to cool the motor. Among them, the fourth heat exchanger 18 is an outdoor heat exchanger.

[0059] In some embodiments, the thermal management system also has a third heating and dehumidification mode; see [link to relevant documentation] for details. Figure 12 In the third heating and dehumidification mode, compressor 1 is in the on state, first valve 5 is in the throttling state, compressor 1, first heat exchange section 201, first valve 5, and third heat exchange section 31 are connected, first heat exchange section 201 exchanges heat with second heat exchange section 202, sixth heat exchanger 8, second heat exchange section 202 and third pump 9 are connected, the first heat exchanger 2 is used to exchange heat between the coolant and refrigerant in the passenger cabin heating water side circuit where the sixth heat exchanger 8 is located to heat the passenger cabin, fifth heat exchanger 15, fourth heat exchange section 32 and second pump 16 are connected, third heat exchange section 31 exchanges heat with fourth heat exchanger 32, the second heat exchanger 3 is used to exchange heat between the coolant and refrigerant in the passenger cabin cooling water side circuit where the fifth heat exchanger 15 is located to dehumidify the passenger cabin, thus realizing heating and dehumidification of the passenger cabin. The motor heat exchanger 19, the fourth heat exchanger 18, the fourth heat exchange section 32, and the second pump 16 are connected. The second heat exchanger 32 enables the coolant and refrigerant in the motor water-side circuit where the motor heat exchanger 19 is located to exchange heat to cool the motor. When there is heat in the atmosphere and the motor has residual heat available, the heat from the coolant in the motor water-side circuit where the fourth heat exchanger 18 and the motor heat exchanger 19 are located is absorbed by the third heat exchange section 31 and used to heat the passenger compartment.

[0060] In some embodiments, the thermal management system also has a seventh passenger cabin heating mode; see [link to relevant documentation] for details. Figure 15In the seventh passenger cabin heating mode, compressor 1 is in the on state, first valve 5 is in the throttling state, compressor 1, first heat exchanger 201, first valve 5, and third heat exchanger 31 are connected. First heat exchanger 201 exchanges heat with second heat exchanger 202. Sixth heat exchanger 8, second heat exchanger 202, and third pump 9 are connected. The first heat exchanger 2 facilitates heat exchange between the coolant and refrigerant in the passenger cabin heating water-side circuit where the sixth heat exchanger 8 is located, thus heating the passenger cabin. Motor heat exchanger 19, fourth heat exchanger 18, fourth heat exchanger 32, and second pump 16 are connected. The second heat exchanger 3 facilitates heat exchange between the coolant and refrigerant in the motor water-side circuit where the motor heat exchanger 19 is located, thus cooling the motor. When the motor has residual heat available, the heat from the coolant in the motor water-side circuit where the motor heat exchanger 19 is located is absorbed by the third heat exchanger 31 and used to heat the passenger cabin.

[0061] In some embodiments, the thermal management system also has a motor cooling mode; see [link to relevant documentation] for some embodiments. Figure 19 In motor cooling mode, compressor 1 is in the off state. The fourth heat exchanger 18, motor heat exchange device 19, second heat exchange section 202 and third pump 9 are connected. Heat exchange with the atmospheric environment is achieved through the fourth heat exchanger 18, thereby dissipating heat from the motor heat exchange device 19, that is, cooling the motor. Among them, the fourth heat exchanger 18 is an outdoor heat exchanger.

[0062] In some embodiments, the thermal management system further includes an eleventh valve 23, which has a shut-off state and a full-open state. If the valve is in the shut-off state, no refrigerant flows in the branch containing the valve; if the valve is in the full-open state, refrigerant can flow in the branch containing the valve. Optionally, the eleventh valve 23 is a shut-off valve or a check valve. The eleventh valve 23 is connected in series between at least one of the motor heat exchanger 19, port b of the ninth valve 21, and the fourth heat exchanger 18. In a specific embodiment, the eleventh valve 23 is a check valve. Please refer to [link to relevant documentation]. Figure 3 , Figure 5 , Figure 11 When the passenger cabin requires cooling, coolant flows through the one-way valve, and the motor water-side circuit can use the third pump 9 to dissipate heat from the second heat exchanger 202 and the motor heat exchanger 19 into the air via the fourth heat exchanger 18. Please refer to [link / reference]. Figures 13 to 17 When the passenger cabin requires heating, the check valve prevents coolant flow, and the motor water-side circuit uses the second pump 16, allowing the second heat exchanger 3 to utilize the motor's waste heat, improving system capacity and minimizing system costs. In other words, when the passenger cabin requires heating, the check valve prevents the water from the second pump 16 from directly returning to the fourth heat exchange section 32, thus preventing the utilization of the motor's waste heat. At this time, the check valve directs water flow to the motor heat exchange device 19, thereby utilizing the motor's waste heat. For the connection relationships of the ports of the eleventh valve 23 under different operating modes, please refer to [link to relevant documentation]. Figures 2 to 19 .

[0063] In some embodiments, the thermal management system further includes a tenth valve 22, which is connected in series at the outlet of the motor heat exchanger 19. The tenth valve 22 includes port a, port b, and port c. Port a of the tenth valve 22 is connected to the motor heat exchanger 19, port b is connected to at least one of the fourth heat exchanger 18 and the second heat exchange section 202, and port c is connected to at least one of the fourth heat exchange section 32 and the first pump 12. For the connection relationships of the ports of the tenth valve 22 under different operating modes, please refer to [reference needed]. Figures 2 to 19 .

[0064] In some embodiments, the thermal management system further includes an eighth valve 20, which is connected in series to port b of the tenth valve 22. The eighth valve 20 includes ports a, b, and c. Port a of the eighth valve 20 is connected to port b of the tenth valve 22, port b of the eighth valve 20 is connected to the fourth heat exchanger 18, and port c of the eighth valve 20 is connected to the second heat exchange section 202. For the connection relationships of the ports of the eighth valve 20 under different operating modes, please refer to [reference needed]. Figures 2 to 19 .

[0065] In some embodiments, the thermal management system further includes a ninth valve 21, which is connected in series at the outlet of the fourth heat exchanger 18. The ninth valve 21 includes port a, port b, and port c. Port a of the ninth valve 21 is connected to the fourth heat exchanger 18, port b is connected to the fourth heat exchange section 32, and port c is connected to the first pump 12. For the connection relationships of the ports of the ninth valve 21 under different operating modes, please refer to [reference needed]. Figures 2 to 19 .

[0066] In some embodiments, the thermal management system further includes a sixth valve 10, which is connected in series at the outlet of the third pump 9. The sixth valve 10 includes port a, port b, and port c. Port a of the sixth valve 10 is connected to the third pump 9, port b is connected to the fourth heat exchanger 18, and port c is connected to the second heat exchange section 202. For the connection relationships of the ports of the sixth valve 10 under different operating modes, please refer to [reference needed]. Figures 2 to 19 .

[0067] In some embodiments, the thermal management system further includes a seventh valve 17, which is connected in series with the outlet of the second pump 16. The seventh valve 17 includes ports a, b, and c. Port a of the seventh valve 17 is connected to the second pump 16, port b is connected to the fifth heat exchanger 15, and port c is connected to the motor heat exchange device 19. For the connection relationships of the ports of the seventh valve 17 under different operating modes, please refer to [reference needed]. Figures 2 to 19 .

[0068] Some of the technical features in the above embodiments can be combined or replaced.

[0069] The technical principles of this application have been described above with reference to specific embodiments. However, it should be noted that these descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Other specific technical solutions or equivalent substitutions that can be conceived by those skilled in the art without creative effort will fall within the scope of protection of this application.

Claims

1. A thermal management system, characterized by, The heat management system comprises a compressor, a first heat exchanger, a second heat exchanger, a third heat exchanger, a first valve and a second valve, the first heat exchanger comprises a first heat exchange part and a second heat exchange part which are isolated from each other, the second heat exchanger comprises a third heat exchange part and a fourth heat exchange part which are isolated from each other, the third heat exchanger comprises a fifth heat exchange part and a sixth heat exchange part which are isolated from each other, the compressor, the first heat exchange part, the first valve and the third heat exchange part can be communicated, the compressor, the first heat exchange part, the second valve and the fifth heat exchange part can be communicated; The heat management system further comprises a battery heat exchange device, a first pump and a fourth heat exchanger, the fourth heat exchanger can exchange heat with an atmospheric environment, in a certain working mode of the heat management system, any one of the sixth heat exchange part, the second heat exchange part and the fourth heat exchanger is communicated with the first pump and the battery heat exchange device.

2. The thermal management system of claim 1, wherein, The heat management system has at least one mode of a first working mode, a second working mode and a third working mode; In the first working mode, the compressor is in an open state, the second valve is in a throttling state, the compressor, the first heat exchange part, the second valve, the fifth heat exchange part are communicated, the battery heat exchange device is communicated with the sixth heat exchange part and the first pump, the fifth heat exchange part exchanges heat with the sixth heat exchange part; In the second working mode, the compressor is in an open state, the first valve is in a throttling state, the compressor, the first heat exchange part, the first valve, the third heat exchange part are communicated, the battery heat exchange device, the second heat exchange part and the first pump are communicated, the battery heat exchange device is communicated with the sixth heat exchange part and the first pump, the first heat exchange part exchanges heat with the second heat exchange part; In the third working mode, the battery heat exchange device is communicated with the second heat exchange part, the fourth heat exchanger and the first pump.

3. The thermal management system of claim 2, wherein, The first working mode comprises at least one of a first mixed refrigeration mode, a first battery refrigeration mode, a first refrigeration dehumidification mode, a first passenger cabin heating and dehumidification mode and a first passenger cabin heating mode, in any one of the first mixed refrigeration mode, the first battery refrigeration mode, the first refrigeration dehumidification mode, the first passenger cabin heating and dehumidification mode and the first passenger cabin heating mode, the compressor is in an open state, and the second valve is in a throttling state; The heat management system further comprises a fifth heat exchanger and a second pump, in any one of the first mixed refrigeration mode, the first refrigeration dehumidification mode and the first passenger cabin heating and dehumidification mode, the compressor is in an open state, the first valve is in a throttling state, the compressor, the first heat exchange part, the first valve, the third heat exchange part are communicated, the fifth heat exchanger, the fourth heat exchange part and the second pump are communicated, and the third heat exchange part exchanges heat with the fourth heat exchange part; The heat management system further comprises a sixth heat exchanger and a third pump, in any one of the first refrigeration dehumidification mode, the first passenger cabin heating dehumidification mode and the first passenger cabin heating mode, the sixth heat exchanger, the second heat exchange part and the third pump are communicated, and the first heat exchange part exchanges heat with the second heat exchange part.

4. The thermal management system of claim 3, wherein, The heat management system further comprises a motor heat exchange device, in any one of the first mixed refrigeration mode, the first battery refrigeration mode and the first refrigeration dehumidification mode, the fourth heat exchanger, the motor heat exchange device, the second heat exchange part and the third pump are communicated. In any one of the first passenger cabin heating dehumidification mode and the first passenger cabin heating mode, the compressor is in an open state, the first valve is in a throttling state, the compressor, the first heat exchange part, the first valve, the third heat exchange part are communicated, the motor heat exchange device, the fourth heat exchanger, the fourth heat exchange part and the second pump are communicated, and the third heat exchange part exchanges heat with the fourth heat exchange part.

5. The thermal management system of claim 2, wherein, The second working mode comprises at least one of a second passenger cabin heating dehumidification mode, a second passenger cabin heating mode and a third passenger cabin heating mode, the heat management system further comprises a sixth heat exchanger and a third pump, in any one of the second passenger cabin heating dehumidification mode, the second passenger cabin heating mode and the third passenger cabin heating mode, the compressor is in an open state, the first valve is in a throttling state, the compressor, the first heat exchange part, the first valve, the third heat exchange part are communicated, the first heat exchange part exchanges heat with the second heat exchange part, the battery heat exchange device, the second heat exchange part and the first pump are communicated, the sixth heat exchanger, the second heat exchange part and the third pump are communicated, and the battery heat exchange device, the sixth heat exchange part and the first pump are communicated. The heat management system further comprises a fifth heat exchanger and a second pump, in the second passenger cabin heating dehumidification mode, the fifth heat exchanger, the fourth heat exchange part and the second pump are communicated, and the third heat exchange part exchanges heat with the fourth heat exchange part.

6. The thermal management system of claim 5, wherein, The heat management system further comprises a fifth heat exchanger and a second pump, in the second passenger cabin heating dehumidification mode, the fifth heat exchanger, the fourth heat exchange part and the second pump are communicated, and the third heat exchange part exchanges heat with the fourth heat exchange part. The heat management system further comprises a motor heat exchange device and a second pump, in any one of the second passenger cabin heating dehumidification mode and the second passenger cabin heating mode, the motor heat exchange device, the fourth heat exchanger, the fourth heat exchange part and the second pump are communicated.

7. The thermal management system of claim 5, wherein, The heat management system further comprises a third valve, in the third passenger cabin heating mode, the first valve and the third valve are in a throttling state, the outlet of the compressor, the third valve and the inlet of the compressor are communicated, and the compressor, the first heat exchange part, the first valve, the third heat exchange part are communicated.

8. The thermal management system of any one of claims 5 to 7, wherein, The heat management system further comprises a fourth valve and a fifth valve, the fourth valve comprises a port a, a port b and a port c, the fifth valve comprises a port a and a port b, in any one of the second passenger cabin heating dehumidification mode, the second passenger cabin heating mode and the third passenger cabin heating mode, the battery heat exchange device, the port a of the fifth valve, the port b of the fifth valve, the second heat exchange unit, the port a of the fourth valve, the port c of the fourth valve and the first pump are communicated, the sixth heat exchanger, the second heat exchange unit, the third pump, the port a of the fourth valve and the port b of the fourth valve are communicated.

9. The thermal management system of claim 2, wherein, The third working mode comprises at least one of a first passenger cabin refrigeration mode and a battery heat dissipation mode, in the battery heat dissipation mode, the compressor is in a closed state. The heat management system further comprises a fifth heat exchanger and a second pump, in the first passenger cabin refrigeration mode, the compressor is in an open state, the first valve is in a throttling state, the compressor, the first heat exchange unit, the first valve, the third heat exchange unit are communicated, the fifth heat exchanger, the fourth heat exchange unit and the second pump are communicated, and the third heat exchange unit exchanges heat with the fourth heat exchange unit.

10. The thermal management system of claim 9, wherein, The heat management system further comprises a motor heat exchange device, in the third working mode, the battery heat exchange device, the motor heat exchange device, the second heat exchange unit, the fourth heat exchanger and the first pump are communicated.

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