Thermal management system

Abstract

The heat management system comprises a first heat exchanger and a second heat exchanger, in a first working mode, a compressor is in an on state, a throttling device is in a throttling state, the compressor, a first heat exchange part, the throttling device and a third heat exchange part are communicated, a first port is communicated with a second port, and the first port is communicated with a third port; the fourth port is communicated with the sixth port, the fifth port is communicated with the sixth port, the first port is communicated with the second port, the third port is communicated with the fourth port, the first interface is communicated with the second interface, the first branch is communicated with the fifth branch, the first branch, the second branch, the third branch and the fourth branch are communicated, and the second branch, the third branch and the fourth branch are communicated. According to the heat management system, in the first working mode, redundant heat in the passenger compartment can be released to the atmospheric environment.

Description

Technical Field

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

[0002] A vehicle's (e.g., an electric vehicle) thermal management system can regulate the ambient temperature inside the passenger compartment and manage the thermal properties of the battery.

[0003] In the relevant thermal management system, a warm air core meets the heating needs of the passenger cabin, while a cold air core meets the cooling needs. A battery heat exchanger manages the battery's thermal performance, and a motor heat exchanger manages the motor's thermal performance. In heating and dehumidification mode, the warm air core is connected to the condenser, and the cold air core is connected to the evaporator. The motor heat exchanger and the air-cooled heat exchanger are also connected to the evaporator, allowing the evaporator to recover waste heat from the motor. When there is excess heat in the passenger cabin, this excess heat is discharged to the battery heat exchanger, causing the battery temperature to rise and affecting battery efficiency. Summary of the Invention

[0004] The purpose of this application is to provide a thermal management system that can release excess heat from the passenger cabin into the atmospheric environment.

[0005] The objective of this application is achieved through the following technical solution:

[0006] A thermal management system includes a first heat exchanger and a second heat exchanger, wherein the first heat exchanger includes a first heat exchange section and a second heat exchange section that are isolated from each other, and the second heat exchanger includes a third heat exchange section and a fourth heat exchange section that are isolated from each other.

[0007] The thermal management system includes a refrigerant system and a coolant system. The refrigerant system includes a compressor, a first heat exchanger, a throttling device, and a third heat exchanger. The coolant system includes a first branch, a second branch, a third branch, a fourth branch, and a fifth branch. The first branch includes a first pump and a second heat exchanger; the second branch includes a second pump and a fourth heat exchanger; the third branch includes a third heat exchanger; the fourth branch includes a motor heat exchanger; and the fifth branch includes a fourth heat exchanger.

[0008] The coolant system includes a first valve device, a second valve device, and a third valve device. The first valve device has a first port, a second port, a third port, a fourth port, a fifth port, and a sixth port. The second valve device has a first port, a second port, a third port, and a fourth port. The third valve device has a first interface and a second interface.

[0009] The first port can be connected to one end of the first branch, the second port can be connected to the first interface, the third port, the fifth port and one end of the third branch can be connected, the fourth port can be connected to the other end of the first branch, the sixth port can be connected to one end of the fourth branch, the first port can be connected to the other end of the third branch, the second port can be connected to one end of the second branch, the third port can be connected to the other end of the fourth branch, the fourth port can be connected to the other end of the second branch, the second interface can be connected to one end of the fifth branch, and the other end of the fifth branch can also be connected to the other end of the first branch;

[0010] In the first operating mode of the thermal management system, the compressor is in the on state, the throttling device is in the throttling state, the compressor, the first heat exchange section, the throttling device and the third heat exchange section are connected, the first port is connected to the second port, the first port is connected to the third port, the fourth port is connected to the sixth port, the fifth port is connected to the sixth port, the first outlet is connected to the second outlet, the third outlet is connected to the fourth outlet, the first interface is connected to the second interface, the first branch is connected to the fifth branch, the first branch, the second branch, the third branch and the fourth branch are connected, and the second branch, the third branch and the fourth branch are connected.

[0011] In this application, in the first working mode, the first branch, the second branch, the third branch and the fourth branch are connected by the first valve device, the second valve device and the third valve device, so that the second heat exchange section is connected to the third heat exchanger, and the excess heat in the passenger cabin is released into the atmospheric environment through the third heat exchanger, so that the temperature in the passenger cabin is suitable. Attached Figure Description

[0012] Figure 1 This is a connection diagram of the thermal management system of this application;

[0013] Figure 2 yes Figure 1 A schematic diagram of a first hybrid heating mode of an embodiment of the thermal management system shown;

[0014] Figure 3 yes Figure 1 A schematic diagram of the second hybrid heating mode of an embodiment of the thermal management system shown;

[0015] Figure 4 yes Figure 1 A schematic diagram of a single thermal mode for the first passenger cabin in an embodiment of the thermal management system shown.

[0016] Figure 5 yes Figure 1 A schematic diagram of a single thermal mode for the second passenger cabin in an embodiment of the thermal management system shown.

[0017] Figure 6 yes Figure 1 A schematic diagram of a single thermal mode for the third passenger cabin in an embodiment of the thermal management system shown.

[0018] Figure 7 yes Figure 1 A schematic diagram of the fourth passenger cabin single thermal mode of an embodiment of the thermal management system shown.

[0019] Figure 8 yes Figure 1 A schematic diagram of the hot gas bypass mode of an embodiment of the thermal management system shown.

[0020] Figure 9 yes Figure 1 A schematic diagram of a hybrid cooling mode of an embodiment of the thermal management system shown;

[0021] Figure 10 yes Figure 1 A schematic diagram of a single-cooling mode for the passenger cabin, according to an embodiment of the thermal management system shown.

[0022] Figure 11 yes Figure 1 A schematic diagram of a battery-only cooling mode according to an embodiment of the thermal management system shown.

[0023] Figure 12 yes Figure 1 A schematic diagram of the first heat dissipation mode of an embodiment of the thermal management system shown;

[0024] Figure 13 yes Figure 1 A schematic diagram of the second heat dissipation mode of an embodiment of the thermal management system shown;

[0025] Figure 14 yes Figure 1 A schematic diagram of the first heating and dehumidification mode of an embodiment of the thermal management system shown.

[0026] Figure 15 yes Figure 1 A schematic diagram of the second heating and dehumidification mode of an embodiment of the thermal management system shown.

[0027] Figure 16 yes Figure 1 A schematic diagram of the third heating and dehumidification mode of an embodiment of the thermal management system shown.

[0028] Figure 17 yes Figure 1 A schematic diagram of the fourth heating and dehumidification mode of an embodiment of the thermal management system shown.

[0029] Figure 18 yes Figure 1 A schematic diagram of the first cooling and dehumidification mode of an embodiment of the thermal management system shown;

[0030] Figure 19 yes Figure 1 A schematic diagram of the second cooling and dehumidification mode of an embodiment of the thermal management system shown;

[0031] Figure 20 This is a schematic diagram of the first state of the first valve device in another embodiment of the thermal management system of this application;

[0032] Figure 21 This is a schematic diagram of the second state of the first valve device in another embodiment of the thermal management system of this application;

[0033] Figure 22 This is a schematic diagram of the third state of the first valve device in another embodiment of the thermal management system of this application;

[0034] Figure 23 This is a schematic diagram of the fourth state of the first valve device in another embodiment of the thermal management system of this application;

[0035] Figure 24 This is a schematic diagram of the fifth state of the first valve device in another embodiment of the thermal management system of this application;

[0036] Figure 25 This is a schematic diagram of the sixth state of the first valve device in another embodiment of the thermal management system of this application;

[0037] Figure 26 This is a schematic diagram of the first state of the second valve device in another embodiment of the thermal management system of this application;

[0038] Figure 27 This is a schematic diagram of the second state of the second valve device in another embodiment of the thermal management system of this application;

[0039] Figure 28 This is a schematic diagram of the third state of the second valve device in another embodiment of the thermal management system of this application;

[0040] Figure 29 This is a schematic diagram of the fourth state of the second valve device in another embodiment of the thermal management system of this application;

[0041] Figure 30 This is a schematic diagram of the fifth state of the second valve device in another embodiment of the thermal management system of this application;

[0042] Figure 31 This is a schematic diagram of the sixth state of the second valve device in another embodiment of the thermal management system of this application;

[0043] Figure 32 This is a schematic diagram of the seventh state of the second valve device in another embodiment of the thermal management system of this application;

[0044] Figure 33 This is a schematic diagram of the first state of the third valve device in another embodiment of the thermal management system of this application;

[0045] Figure 34 This is a schematic diagram of the second state of the third valve device in another embodiment of the thermal management system of this application;

[0046] Figure 35 This is a schematic diagram of the third state of the third valve device in another embodiment of the thermal management system of this application;

[0047] Figure 36 This is a schematic diagram of the fourth state of the third valve device in another embodiment of the thermal management system of this application. Detailed Implementation

[0048] The exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. If several embodiments exist, features in these embodiments may be combined with each other without conflict. When the description refers to the drawings, unless otherwise stated, the same numbers in different drawings represent the same or similar elements. The descriptions in the following exemplary embodiments do not represent all embodiments consistent with the present invention; rather, they are merely examples of apparatuses, products, and / or methods consistent with some aspects of the present invention as set forth in the claims.

[0049] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of protection of this invention. The singular forms “a,” “the,” or “the” as used in the specification and claims of this invention are also intended to include the plural forms unless the context clearly indicates otherwise.

[0050] It should be understood that the terms "first," "second," and similar words used in the specification and claims of this invention do not indicate any order, quantity, or importance, but are merely used to distinguish features. Similarly, the terms "an" or "a" do not indicate a quantity limitation, but rather indicate the presence of at least one. Unless otherwise stated, the terms "before," "after," "upper," "lower," and similar words appearing in this invention are for ease of explanation only and are not limited to a specific location or spatial orientation. The terms "comprising" or "including" are an open-ended expression, meaning that the element preceding "comprising" or "including" encompasses the element following "comprising" or "including" and its equivalents, but this does not preclude the element preceding "comprising" or "including" from also including other elements. In this invention, the term "several" means two or more.

[0051] According to a specific embodiment of the thermal management system of this application, the thermal management system includes a refrigerant system and a coolant system, which are isolated from each other and not connected. The refrigerant system is circulated with refrigerant, and the coolant system is circulated with coolant. The refrigerant may be R134A, carbon dioxide, or other heat exchange media, and the coolant may be a mixture of ethanol and water or other cooling media.

[0052] See Figure 1 The thermal management system includes a first heat exchanger 2 and a second heat exchanger 4. In this embodiment, both the first heat exchanger 2 and the second heat exchanger 4 are dual-channel heat exchangers. The first heat exchanger 2 includes a first heat exchange section 21 and a second heat exchange section 22 that are isolated from each other. The second heat exchanger 4 includes a third heat exchange section 41 and a fourth heat exchange section 42 that are isolated from each other. The refrigerant system includes a compressor 1, a first heat exchange section 21, a throttling device 31, and a third heat exchange section 41. The coolant system includes a second heat exchange section 22 and a fourth heat exchange section 42. The channels of the first heat exchange section 21 and the third heat exchange section 41 are circulated by refrigerant, and the channels of the second heat exchange section 22 and the fourth heat exchange section 42 are circulated by coolant.

[0053] In this embodiment, the components of the refrigerant system can be indirectly connected through pipes or valves, or they can be integrated into a single structure.

[0054] In this embodiment, the refrigerant system includes a sixth heat exchanger 9, which comprises a fifth heat exchange section 91 and a sixth heat exchange section 92. The inlet of the fifth heat exchange section 91 is connected to the outlet of the first heat exchange section 21, and the outlet of the fifth heat exchange section 91 is connected to the inlet of the throttling device 31. The inlet of the sixth heat exchange section 92 is connected to the outlet of the third heat exchange section 41, and the outlet of the sixth heat exchange section 92 is connected to the inlet of the compressor 1. By providing the sixth heat exchanger 9, heat exchange between the higher-temperature refrigerant and the lower-temperature refrigerant is achieved, reducing the refrigerant temperature before throttling by the throttling device 31, thereby resulting in a lower refrigerant temperature after throttling and better heat exchange at the second heat exchanger 4. Simultaneously, it can also increase the refrigerant temperature before entering the compressor 1, reducing the probability of liquid refrigerant entering the compressor 1, thus protecting the compressor 1. In some other embodiments, the refrigerant system may not include a sixth heat exchanger 9.

[0055] In this embodiment, the refrigerant system includes a bypass branch Z. One end of the bypass branch Z is connected to the outlet of the compressor 1, and the other end is connected to the inlet of the compressor 1. The bypass branch Z includes a valve component 32, which has a throttling function. Through the bypass branch Z, the high-temperature and high-pressure refrigerant flowing out of the compressor 1 can be divided into two paths. One path flows sequentially to the first heat exchange section 21, the fifth heat exchange section 91, the throttling device 31, and the third heat exchange section 41. The other path flows through the valve component 32 and then enters the sixth heat exchange section 92 together with the refrigerant flowing out of the third heat exchange section 41. Under certain operating conditions, some refrigerant flows through the bypass branch Z, and the valve component 32 is in a throttling state, which can increase the inlet temperature of the compressor 1, thereby improving the heat exchange effect.

[0056] In this embodiment, the refrigerant system includes a liquid receiver 8, which is connected in series between the outlet of the first heat exchange section 21 and the inlet of the fifth heat exchange section 91. In other possible embodiments, the liquid receiver 8 can be replaced by a gas-liquid separator, which is disposed between the inlet of the compressor 1 and the outlet of the sixth heat exchange section 92. The gas-liquid separator can separate the gaseous and liquid refrigerant, store the liquid refrigerant, reduce the risk of liquid slugging in the compressor, and can also be used to regulate the refrigerant flow rate in the circulation loop.

[0057] See Figure 1 The coolant system includes a first branch L1, a second branch L2, a third branch L3, a fourth branch L4, a fifth branch L5, a sixth branch L6, a seventh branch L7, a first flow path D1, a second flow path D2, a third flow path D3, and a fourth flow path D4. The first branch L1 includes a first pump P1 and a second heat exchanger 22; the second branch L2 includes a second pump P2 and a fourth heat exchanger 42; the third branch L3 includes a third heat exchanger 103; the fourth branch L4 includes a motor heat exchanger 102; the fifth branch L5 includes a fourth heat exchanger 104; the sixth branch L6 includes a fifth heat exchanger 105; and the seventh branch L7 includes a third pump P3 and a battery heat exchanger 101. The first flow path D1, the second flow path D2, the third flow path D3, and the fourth flow path D4 are all hollow pipes. The inlet of the first pump P1 is connected to the outlet of the second heat exchange section 22, the inlet of the second pump P2 is connected to the outlet of the fourth heat exchange section 42, and the outlet of the third pump P3 is connected to the inlet of the battery heat exchange device 101.

[0058] The coolant system includes a first valve device 5, a second valve device 6, and a third valve device 7. The first valve device 5 has a first port 51, a second port 52, a third port 53, a fourth port 54, a fifth port 55, a sixth port 56, and a seventh port 57. The second valve device 6 has a first port 61, a second port 62, a third port 63, a fourth port 64, a fifth port 65, a sixth port 66, and a seventh port 67. The third valve device 7 has a first interface 71, a second interface 72, a third interface 73, a fourth interface 74, a fifth interface 75, and a sixth interface 76. Specifically, the first port 51 is connected to one end of the first branch L1; the second port 52 is connected to the first interface 71; the third port 53, the fifth port 55, and one end of the third branch L3 are connected; the fourth port 54 is connected to the other end of the first branch L1; the sixth port 56 is connected to one end of the fourth branch L4; the seventh port 57 and the other end of the third branch L3 are connected to the first port 61; the second port 62 is connected to one end of the second branch L2; the third port 63 is connected to the other end of the fourth branch L4; the fourth port 64 is connected to the other end of the second branch L2; the fifth port 65 is connected to the third interface 73; the sixth port 66 and the fifth interface 75 are connected to one end of the seventh branch L7; and the seventh port 67 is connected to one end of the first flow path D1 and the first... One end of the second flow path D2 is connected to the other end of the seventh branch L7; the second interface 72 is connected to one end of the fifth branch L5; the fourth interface 74 is connected to one end of the sixth branch L6; and the sixth interface 76 is connected to one end of the third flow path D3. The other end of the fifth branch L5 is connected to the other end of the first branch L1; the other end of the first flow path D1 is connected to one end of the second branch L2; the other end of the second flow path D2 is connected to the other end of the fourth branch L4; the other end of the third flow path D3 is connected to one end of the seventh branch L7; one end of the fourth flow path D4 is connected to the other end of the seventh branch L7; the other end of the fourth flow path D4 is connected to the other end of the first branch L1; and the other end of the sixth branch L6 is connected to one end of the second branch L2.

[0059] The first valve device 5 includes a first valve component 10, a second valve component 20, and a third valve component 30. These three valve components are independent parts, connected to each other via pipelines or integrated together. The first valve component 10 has a first valve port 1a, a second valve port 1b, and a third valve port 1c; the second valve component 20 has a fourth valve port 2a, a fifth valve port 2b, and a sixth valve port 2c; and the third valve component 30 has a seventh valve port 3a, an eighth valve port 3b, and a ninth valve port 3c. The first valve port 1a can communicate with at least one of the second valve port 1b and the third valve port 1c; the fourth valve port 2a can communicate with at least one of the fifth valve port 2b and the sixth valve port 2c; and the seventh valve port 3a can communicate with either the eighth valve port 3b or the ninth valve port 3c. Optionally, the first valve component 10, the second valve component 20, and the third valve component 30 are all three-way valves, wherein the first valve component 10 and the second valve component 20 are both proportional three-way valves.

[0060] Specifically, the first valve port 1a is the first port 51, the second valve port 1b is the second port 52, the third valve port 1c is the third port 53, the fourth valve port 2a is connected to the ninth valve port 3c, the fifth valve port 2b is the fourth port 54, the sixth valve port 2c is connected to the fifth port 55, the seventh valve port 3a is the sixth port 56, and the eighth valve port 3b is the seventh port 57.

[0061] The second valve device 6 includes a fourth valve element 40, a fifth valve element 50, a sixth valve element 60, and a seventh valve element 70. The fourth valve element 40 has a first port 4a, a second port 4b, and a third port 4c; the fifth valve element 50 has a fourth port 5a, a fifth port 5b, a sixth port 5c, and a seventh port 5d; the sixth valve element 60 has an eighth port 6a, a ninth port 6b, and a tenth port 6c; and the seventh valve element 70 has an eleventh port 7a and a twelfth port 7b. The first port 4a can communicate with either the second port 4b or the third port 4c, and the eighth port 6a can communicate with at least one of the ninth port 6b and the tenth port 6c. Optionally, the fourth valve element 40 and the sixth valve element 60 are both three-way valves, the fifth valve element 50 is a four-way valve, and the seventh valve element 70 is a two-way valve.

[0062] Specifically, the first port 4a is the first port 61, the second port 4b is connected to the fourth port 5a, the third port 4c and the eleventh port 7a are connected to the sixth port 66, the fifth port 5b is the second port 62, the sixth port 5c is connected to the tenth port 6c, the seventh port 5d is the third port 63, the eighth port 6a is the fourth port 64, the ninth port 6b is the fifth port 65, and the twelfth port 7b is the seventh port 67.

[0063] The third valve device 7 includes an eighth valve element 80 and a ninth valve element 90. The eighth valve element 80 has a first connecting port 8a, a second connecting port 8b, and a third connecting port 8c. The ninth valve element 90 has a fourth connecting port 9a, a fifth connecting port 9b, and a sixth connecting port 9c. The first connecting port 8a can communicate with at least one of the second connecting port 8b and the third connecting port 8c, and the fourth connecting port 9a can communicate with at least one of the fifth connecting port 9b and the sixth connecting port 9c. Optionally, both the eighth valve element 80 and the ninth valve element 90 are proportional three-way valves.

[0064] Specifically, the first connecting port 8a is the first interface 71, the second connecting port 8b is the second interface 72, the third connecting port 8c is the sixth interface 76, the fourth connecting port 9a is the third interface 73, the fifth connecting port 9b is the fourth interface 74, and the sixth connecting port 9c is the fifth interface 75.

[0065] Pumps P1, P2, and P3 power the flow of coolant. Their positions can be adjusted to ensure proper fluid flow. Optionally, all three pumps can be electric water pumps; their types and specifications can be the same or different, depending on the requirements of the thermal management system.

[0066] The battery heat exchanger 101 is used for thermal management of the battery. Optionally, the battery heat exchanger 101 can be an integrated component with the battery as a whole, or it can be a separate component assembled with the battery. The motor heat exchanger 102 is used for thermal management of the motor. Optionally, the motor heat exchanger 102 can be an integrated component with the motor as a whole, or it can be a separate component assembled with the motor.

[0067] The thermal management system provided in this application embodiment can be applied to electric vehicles. The electric vehicle has an air conditioning unit that exchanges heat with the air in the passenger compartment. A fourth heat exchanger 104 and a fifth heat exchanger 105 are disposed within the air conditioning unit. The fourth and fifth heat exchangers 104 and 105 are used for heat exchange with the air in the air conditioning unit to regulate the temperature of the passenger compartment. The fourth heat exchanger 104 is located downstream of the fifth heat exchanger 105 in the airflow. A fan is provided within the air conditioning unit to guide the airflow within it. A third heat exchanger 103 is disposed near the front grille of the vehicle. A fan is provided beside the third heat exchanger 103 to guide the airflow. The third heat exchanger 103 is used for heat exchange with the atmospheric environment, releasing heat into or absorbing heat from the atmosphere. The third heat exchanger 103, fourth heat exchanger 104, and fifth heat exchanger 105 are all air-cooled heat exchangers, all used for heat exchange with air. The structure of air-cooled heat exchangers is well known to those skilled in the art and will not be described in detail here.

[0068] The thermal management system of this embodiment has multiple operating modes, including heating mode, cooling mode, and dehumidification mode. Under all operating conditions, when compressor 1 is turned on, the first heat exchanger 2 acts as a condenser, where the refrigerant releases heat to the coolant. The second heat exchanger 4 acts as an evaporator, where the refrigerant absorbs heat from the coolant. The fourth heat exchanger 104 acts as a warm air core, which can raise the temperature of the air entering the passenger compartment, and the fifth heat exchanger 105 acts as a cold air core, which can lower the temperature of the air entering the passenger compartment.

[0069] The thermal management system of this embodiment is not only applicable to vehicles, but also to other heat exchange systems that require thermal management. For ease of description, the specification of this application uses vehicles as an example.

[0070] The thermal management system in this embodiment is a secondary loop system. When compressor 1 is turned on and in operation, the refrigerant flow direction of the refrigerant system does not change even if the operating conditions switch. Specifically, when the refrigerant system is in operation, if valve component 32 is in the closed state, the outlet of compressor 1, the first heat exchange section 21, the liquid receiver 8, the fifth heat exchange section 91, the throttling device 31, the third heat exchange section 41, the sixth heat exchange section 92, and the inlet of compressor 1 are connected. If valve component 32 is in the throttling state, the outlet of compressor 1, the first heat exchange section 21, the liquid receiver 8, the fifth heat exchange section 91, the throttling device 31, the third heat exchange section 41, the sixth heat exchange section 92, and the inlet of compressor 1 are connected.

[0071] The refrigerant in the first heat exchange section 21 releases heat to the coolant in the second heat exchange section 22, causing the coolant temperature in the circuit containing the second heat exchange section 22 to rise. The refrigerant in the third heat exchange section 41 absorbs heat from the coolant in the fourth heat exchange section 42, causing the coolant temperature in the circuit containing the fourth heat exchange section 42 to decrease. Using a secondary circuit system can reduce the amount of refrigerant charged, resulting in a lower leakage rate and making it more conducive to the integration of the refrigerant system and miniaturization.

[0072] When the ambient temperature is low, the thermal management system is in heating mode, which is divided into five modes depending on whether the passenger cabin and battery have heating needs: first mixed heating mode, second mixed heating mode, first passenger cabin single heating mode, second passenger cabin single heating mode, third passenger cabin single heating mode, fourth passenger cabin single heating mode, and fifth passenger cabin single heating mode.

[0073] When both the passenger cabin and battery require heating, and there is sufficient ambient heat, the thermal management system operates in the first hybrid heating mode. (See also...) Figure 2 When compressor 1 is turned on, the refrigerant system is in operation. In the coolant system, the first valve port 1a is connected to the second valve port 1b, the fourth valve port 2a is connected to the sixth valve port 2c, the seventh valve port 3a is connected to the ninth valve port 3c, the first port 4a is connected to the second port 4b, the fourth port 5a is connected to the fifth port 5b, the sixth port 5c is connected to the seventh port 5d, the eighth port 6a is connected to the tenth port 6c, the eleventh port 7a is connected to the twelfth port 7b, the first connecting port 8a is connected to the second connecting port 8b, and the first connecting port 8a is connected to the third connecting port 8c; that is, the first port 51 is connected to the second port 52, the fifth port 55 is connected to the sixth port 56, the first port 61 is connected to the second port 62, the third port 63 is connected to the fourth port 64, the sixth port 66 is connected to the seventh port 67, the first interface 71 is connected to the second interface 72, and the first interface 71 is connected to the sixth interface 76. The coolant system forms four coolant circuits.

[0074] In the first coolant circuit, the first branch L1 is connected to the fifth branch L5; along the coolant flow direction, the outlet of the first pump P1, the fourth heat exchanger 104, the second heat exchange section 22 and the inlet of the first pump P1 are connected in sequence. The coolant heated in the second heat exchange section 22 flows to the fourth heat exchanger 104, and the coolant exchanges heat with the air in the air conditioning unit to achieve passenger cabin heating.

[0075] In the second coolant circuit, the second branch L2, the third branch L3 and the fourth branch L4 are connected; along the coolant flow direction, the outlet of the second pump P2, the motor heat exchange device 102, the third heat exchanger 103, the fourth heat exchange section 42 and the inlet of the second pump P2 are connected in sequence, and the atmospheric heat is absorbed through the third heat exchanger 103 for heating the passenger cabin and the battery.

[0076] In the third coolant circuit, the first branch L1, the third flow path D3, the seventh branch L7, and the fourth flow path D4 are connected; the outlet of the first pump P1, the third pump P3, the battery heat exchange device 101, the second heat exchange section 22, and the inlet of the first pump P1 are connected in sequence. The coolant heated in the second heat exchange section 22 flows to the battery heat exchange device 101 to achieve battery heating.

[0077] In the fourth coolant circuit, the outlet of the third pump P3, the battery heat exchange device 101, and the inlet of the third pump P3 are connected sequentially along the coolant flow direction.

[0078] To ensure effective heating in the passenger compartment, the outlet coolant temperature of the second heat exchange section 22 is relatively high. Without a fourth coolant circuit, the inlet of the battery heat exchange device 101 is directly connected to the outlet of the second heat exchange section 22, and excessively high coolant temperature could damage the battery. In this application, the higher-temperature coolant flowing from the second heat exchange section 22 mixes with the lower-temperature coolant flowing from the battery heat exchange device 101 before flowing into the battery heat exchange device 101. This ensures that the coolant temperature flowing into the battery heat exchange device 101 is suitable, thereby meeting the passenger compartment's heating requirements while protecting the battery.

[0079] When both the passenger cabin and battery require heating, and there is sufficient waste heat from the motor, the thermal management system operates in the second hybrid heating mode. (See also...) Figure 3When compressor 1 is turned on, the refrigerant system is in operation. In the coolant system, the first valve port 1a is connected to the second valve port 1b, the seventh valve port 3a is connected to the eighth valve port 3b, the first port 4a is connected to the second port 4b, the fourth port 5a is connected to the fifth port 5b, the sixth port 5c is connected to the seventh port 5d, the eighth port 6a is connected to the tenth port 6c, the eleventh port 7a is connected to the twelfth port 7b, the first connecting port 8a is connected to the second connecting port 8b, the first connecting port 8a is connected to the third connecting port 8c, that is, the first port 51 is connected to the second port 52, the third port 53 is connected to the fourth port 54, the sixth port 56 is connected to the seventh port 57, the first port 61 is connected to the second port 62, the third port 63 is connected to the fourth port 64, the sixth port 66 is connected to the seventh port 67, the first interface 71 is connected to the second interface 72, and the first interface 71 is connected to the sixth interface 76. The coolant system forms the first, third, and fourth coolant circuits of the first hybrid heating mode, and also forms another second coolant circuit.

[0080] In the second coolant circuit, the second branch L2 is connected to the fourth branch L4; along the coolant flow direction, the outlet of the second pump P2, the motor heat exchange device 102, the fourth heat exchange section 42 and the inlet of the second pump P2 are connected in sequence. The motor heat exchange device 102 absorbs the waste heat of the motor, which raises the temperature of the coolant in the fourth heat exchange section 42. The coolant in the fourth heat exchange section 42 exchanges heat with the refrigerant in the third heat exchange section 41 for heating of the passenger cabin and battery.

[0081] When only the passenger cabin requires heating, and there is sufficient waste heat from the motor, the thermal management system operates in the first passenger cabin-only heating mode. See also Figure 4 When compressor 1 is turned on, the refrigerant system is in operation. In the coolant system, the first valve port 1a is connected to the second valve port 1b, the seventh valve port 3a is connected to the eighth valve port 3b, the first port 4a is connected to the second port 4b, the fourth port 5a is connected to the fifth port 5b, the sixth port 5c is connected to the seventh port 5d, the eighth port 6a is connected to the tenth port 6c, the first connecting port 8a is connected to the second connecting port 8b (i.e., the first port 51 is connected to the second port 52, the sixth port 56 is connected to the seventh port 57, the first port 61 is connected to the second port 62, the third port 63 is connected to the fourth port 64, the first interface 71 is connected to the second interface 72, and the third interface 73 is connected to the fourth interface 74). The coolant system forms the first coolant circuit of the aforementioned first mixed heating mode, and also forms a second coolant circuit.

[0082] In the second coolant circuit, the second branch L2 is connected to the fourth branch L4; along the coolant flow direction, the outlet of the second pump P2, the motor heat exchange device 102, the fourth heat exchange section 42 and the inlet of the second pump P2 are connected in sequence. The motor heat exchange device 102 absorbs the waste heat of the motor, which raises the temperature of the coolant in the fourth heat exchange section 42. The coolant in the fourth heat exchange section 42 exchanges heat with the refrigerant in the third heat exchange section 41 for heating of the passenger cabin.

[0083] When only the passenger cabin requires heating, the thermal management system operates in the second passenger cabin-only heating mode. (See also...) Figure 5 When compressor 1 is turned on, the refrigerant system is in operation. In the coolant system, the first valve port 1a is connected to the second valve port 1b, the fourth valve port 2a is connected to the sixth valve port 2c, the seventh valve port 3a is connected to the ninth valve port 3c, the first port 4a is connected to the second port 4b, the fourth port 5a is connected to the fifth port 5b, the sixth port 5c is connected to the seventh port 5d, the eighth port 6a is connected to the tenth port 6c, the first connecting port 8a is connected to the second connecting port 8b, i.e., the first port 51 is connected to the second port 52, the fifth port 55 is connected to the sixth port 56, the first port 61 is connected to the second port 62, the third port 63 is connected to the fourth port 64, the first interface 71 is connected to the second interface 72, and the third interface 73 is connected to the fourth interface 74. The coolant system forms the first and second coolant circuits of the aforementioned first mixed heating mode.

[0084] When only the passenger cabin requires heating, the thermal management system operates in third-passenger-cabin-only mode. (See also...) Figure 6 When compressor 1 is turned on, the refrigerant system is in operation. In the coolant system, the first valve port 1a is connected to the second valve port 1b, the seventh valve port 3a is connected to the eighth valve port 3b, the first port 4a is connected to the second port 4b, the fourth port 5a is connected to the fifth port 5b, the sixth port 5c is connected to the seventh port 5d, the eighth port 6a is connected to the ninth port 6b, the eighth port 6a is connected to the tenth port 6c, the first connecting port 8a is connected to the second connecting port 8b, the fourth connecting port 9a is connected to the sixth connecting port 9c, that is, the first port 51 is connected to the second port 52, the third port 53 is connected to the fourth port 54, the sixth port 56 is connected to the seventh port 57, the first port 61 is connected to the second port 62, the third port 63 is connected to the fourth port 64, the fourth port 64 is connected to the fifth port 65, the first interface 71 is connected to the second interface 72, and the third interface 73 is connected to the fifth interface 75. The coolant system forms the first coolant circuit of the first hybrid heating mode described above, and also forms a second and a third coolant circuit.

[0085] In the second coolant circuit, the second branch L2 is connected to the fourth branch L4; along the coolant flow direction, the outlet of the second pump P2, the motor heat exchange device 102, the fourth heat exchange section 42 and the inlet of the second pump P2 are connected in sequence. The motor heat exchange device 102 absorbs the waste heat of the motor, which raises the temperature of the coolant in the fourth heat exchange section 42. The coolant in the fourth heat exchange section 42 exchanges heat with the refrigerant in the third heat exchange section 41 for heating of the passenger cabin.

[0086] In the third coolant circuit, the second branch L2 is connected to the seventh branch L7; along the coolant flow direction, the outlet of the second pump P2, the third pump P3, the battery heat exchanger 101, the fourth heat exchange section 42, and the inlet of the second pump P2 are sequentially connected. The battery heat exchanger 101 absorbs heat from the battery, raising the temperature of the coolant in the fourth heat exchange section 42. The coolant in the fourth heat exchange section 42 exchanges heat with the refrigerant in the third heat exchange section 41 for heating the passenger cabin.

[0087] When only the passenger cabin requires heating, the thermal management system operates in the fourth passenger cabin-only heating mode. (See also...) Figure 6 With compressor 1 off, the refrigerant system is in a non-operating state. In the coolant system, the first valve port 1a is connected to the second valve port 1b, the first valve port 1a is connected to the third valve port 1c, the fourth valve port 2a is connected to the fifth valve port 2b, the seventh valve port 3a is connected to the ninth valve port 3c, the first port 4a is connected to the second port 4b, the fourth port 5a is connected to the seventh port 5d, the first connecting port 8a is connected to the second connecting port 8b (i.e., the first port 51 is connected to the second port 52, the first port 51 is connected to the third port 53, the fourth port 54 is connected to the sixth port 56), the first port 61 is connected to the third port 63, the fourth port 64 is connected to the fifth port 65, the first interface 71 is connected to the second interface 72, and the third interface 73 is connected to the fourth interface 74. The coolant system forms two coolant circuits.

[0088] In the first coolant circuit, the first branch L1 is connected to the fifth branch L5; along the coolant flow direction, the outlet of the first pump P1, the fourth heat exchanger 104, the second heat exchange section 22 and the inlet of the first pump P1 are connected in sequence.

[0089] In the second coolant circuit, the first branch L1, the third branch L3, and the fourth branch L4 are connected. Along the coolant flow direction, the outlet of the first pump P1, the third heat exchanger 103, the motor heat exchanger 102, the second heat exchange section 22, and the outlet of the first pump P1 are sequentially connected. The motor heat exchanger 102 absorbs waste heat from the motor, raising the coolant temperature in the second heat exchange section 22. The coolant then flows through the fourth heat exchanger 104, achieving passenger cabin heating while simultaneously cooling the motor.

[0090] When the ambient temperature is extremely low and heat cannot be obtained from the atmosphere, the thermal management system operates in hot gas bypass mode, where a portion of the high-temperature gaseous refrigerant returns directly from compressor 1 to the sixth heat exchange unit 92, improving the heating effect.

[0091] In hot gas bypass mode, see Figure 8 When compressor 1 is turned on, both throttling device 31 and valve component 32 are in throttling mode, and the refrigerant system is in operation. In the coolant system, the first valve port 1a is connected to the second valve port 1b, the fourth valve port 2a is connected to the sixth valve port 2c, the seventh valve port 3a is connected to the ninth valve port 3c, the first port 4a is connected to the third port 4c, the first connecting port 8a is connected to the second connecting port 8b, and the first connecting port 8a is connected to the third connecting port 8c. Specifically, the first port 51 is connected to the second port 52, the fifth port 55 is connected to the sixth port 56, the first port 61 is connected to the sixth port 66, the fourth port 64 is connected to the fifth port 65, the first interface 71 is connected to the second interface 72, the first interface 71 is connected to the sixth interface 76, and the third interface 73 is connected to the fourth interface 74. The coolant system forms three coolant circuits.

[0092] In the first coolant circuit, the first branch L1 is connected to the fifth branch L5; along the coolant flow direction, the outlet of the first pump P1, the fourth heat exchanger 104, the second heat exchange section 22 and the inlet of the first pump P1 are connected in sequence. The coolant heated in the second heat exchange section 22 flows to the fourth heat exchanger 104, and the coolant exchanges heat with the air in the air conditioning unit to achieve passenger cabin heating.

[0093] In the second coolant circuit, the third branch L3, the fourth branch L4, the seventh branch L7, and the second flow path D2 are connected. Along the coolant flow direction, the outlet of the third pump P3, the battery heat exchange device 101, the motor heat exchange device 102, the third heat exchanger 103, and the inlet of the third pump P3 are connected in sequence. Through motor stall heating, the battery is heated as the coolant circulates, which is beneficial for energy saving.

[0094] In the third coolant circuit, the first branch L1, the third flow path D3, the seventh branch L7, and the fourth flow path D4 are connected; the outlet of the first pump P1, the third pump P3, the battery heat exchange device 101, the second heat exchange section 22, and the inlet of the first pump P1 are connected in sequence. The coolant heated in the second heat exchange section 22 flows to the battery heat exchange device 101 to achieve battery heating.

[0095] In related technologies, in the hot gas bypass mode, the second pump P2 typically drives the coolant circulation within the motor heat exchanger 102. The coolant needs to flow through the fourth heat exchange section 42, resulting in a large pressure drop, difficulty in pressure build-up, and slow temperature rise. In this application, in the hot gas bypass mode, the third pump P3 drives the coolant circulation within the motor heat exchanger 102. The motor heat exchanger 102 and the fourth heat exchange section 42 are isolated from each other, thus solving the problem of difficulty in pressure build-up.

[0096] When the ambient temperature is high, the thermal management system is in cooling mode, which is divided into hybrid cooling mode, passenger cabin cooling mode and battery cooling mode, depending on whether the passenger cabin and battery have cooling needs.

[0097] When both the passenger cabin and the battery require cooling, the thermal management system operates in a hybrid cooling mode. (See also...) Figure 9 When compressor 1 is turned on, the refrigerant system is in operation. In the coolant system, the first valve port 1a is connected to the third valve port 1c, the fourth valve port 2a is connected to the fifth valve port 2b, the seventh valve port 3a is connected to the ninth valve port 3c, the first port 4a is connected to the second port 4b, the fourth port 5a is connected to the seventh port 5d, the eighth port 6a is connected to the ninth port 6b, the eleventh port 7a is connected to the twelfth port 7b, the fourth connecting port 9a is connected to the fifth connecting port 9b, and the fourth connecting port 9a is connected to the sixth connecting port 9c. Specifically, the first port 51 is connected to the third port 53, the fourth port 54 is connected to the sixth port 56, the first port 61 is connected to the third port 63, the fourth port 64 is connected to the fifth port 65, the sixth port 66 is connected to the seventh port 67, the first interface 71 is connected to the second interface 72, the third interface 73 is connected to the fourth interface 74, and the third interface 73 is connected to the fifth interface 75. The coolant system forms four coolant circuits.

[0098] In the first coolant circuit, the second branch L2 is connected to the sixth branch L6; along the coolant flow direction, the outlet of the second pump P2, the fifth heat exchanger 105, the fourth heat exchange section 42, and the inlet of the second pump P2 are sequentially connected. The coolant, cooled in the fourth heat exchange section 42, flows to the fifth heat exchanger 105, where it exchanges heat with the air in the air conditioning unit to cool the passenger cabin.

[0099] In the second coolant circuit, the first branch L1, the third branch L3, and the fourth branch L4 are connected; the outlet of the first pump P1, the third heat exchanger 103, the motor heat exchange device 102, the second heat exchange section 22, and the inlet of the first pump P1 are connected in sequence. Heat is released to the atmosphere through the third heat exchanger 103, lowering the coolant temperature. With the circulation of the coolant, heat dissipation of the motor is achieved, and the heat exchange requirements at the second heat exchanger 2 are met.

[0100] In the third coolant circuit, the second branch L2, the seventh branch L7, and the first flow path D1 are connected; along the coolant flow direction, the outlet of the second pump P2, the third pump P3, the battery heat exchange device 101, the fourth heat exchange section 42, and the inlet of the second pump P2 are connected in sequence. The coolant cooled in the fourth heat exchange section 42 flows to the battery heat exchange device 101 to achieve battery cooling.

[0101] In the fourth coolant circuit, the outlet of the third pump P3, the battery heat exchange device 101, and the inlet of the third pump P3 are connected sequentially along the coolant flow direction.

[0102] When the passenger cabin requires cooling, the thermal management system operates in passenger cabin-only cooling mode. (See also...) Figure 10 When compressor 1 is turned on, the refrigerant system is in operation. In the coolant system, the first valve port 1a is connected to the third valve port 1c, the fourth valve port 2a is connected to the fifth valve port 2b, the seventh valve port 3a is connected to the ninth valve port 3c, the first port 4a is connected to the second port 4b, the fourth port 5a is connected to the seventh port 5d, the eighth port 6a is connected to the ninth port 6b, and the fourth connecting port 9a is connected to the fifth connecting port 9b. Specifically, the first port 51 is connected to the third port 53, the fourth port 54 is connected to the sixth port 56, the first port 61 is connected to the third port 63, the fourth port 64 is connected to the fifth port 65, the first interface 71 is connected to the second interface 72, and the third interface 73 is connected to the fourth interface 74. The coolant system forms the first and second coolant circuits of the above-mentioned mixed refrigeration mode.

[0103] When the battery requires cooling, the thermal management system operates in battery-only cooling mode. (See also...) Figure 11 When compressor 1 is turned on, the refrigerant system is in operation. In the coolant system, the first valve port 1a is connected to the third valve port 1c, the fourth valve port 2a is connected to the fifth valve port 2b, the seventh valve port 3a is connected to the ninth valve port 3c, the first port 4a is connected to the second port 4b, the fourth port 5a is connected to the seventh port 5d, the eighth port 6a is connected to the ninth port 6b, the fourth connecting port 9a is connected to the sixth connecting port 9c, that is, the first port 51 is connected to the third port 53, the fourth port 54 is connected to the sixth port 56, the first port 61 is connected to the third port 63, the fourth port 64 is connected to the fifth port 65, the first interface 71 is connected to the second interface 72, and the third interface 73 is connected to the fifth interface 75. The coolant system forms the second and third coolant circuits of the above-mentioned mixed refrigeration mode.

[0104] The thermal management system also has a heat dissipation mode, which is divided into a first heat dissipation mode and a second heat dissipation mode depending on whether the battery and motor have heat dissipation requirements.

[0105] When both the battery and motor require heat dissipation, the thermal management system executes the first cooling mode. See also Figure 12 With compressor 1 off, the refrigerant system is in a non-operating state. In the coolant system, the fourth valve port 2a is connected to the sixth valve port 2c, the seventh valve port 3a is connected to the ninth valve port 3c, the first port 4a is connected to the third port 4c, that is, the first port 51 is connected to the second port 52, the fifth port 55 is connected to the sixth port 56, the first port 61 is connected to the sixth port 66, and the fourth port 64 is connected to the fifth port 65. The third branch L3, the fourth branch L4, the seventh branch L7, and the second flow path D2 are connected. Along the coolant flow direction, the outlet of the third pump P3, the battery heat exchange device 101, the motor heat exchange device 102, the third heat exchanger 103, and the inlet of the third pump P3 are connected in sequence. Heat is released to the atmosphere through the third heat exchanger 103 to achieve heat dissipation for the motor and battery.

[0106] When both motors require heat dissipation, the thermal management system executes the second cooling mode. (See also...) Figure 13 With compressor 1 off, the refrigerant system is in a non-operating state. In the coolant system, the first valve port 1a is connected to the third valve port 1c, the fourth valve port 2a is connected to the fifth valve port 2b, the seventh valve port 3a is connected to the ninth valve port 3c, the first port 4a is connected to the second port 4b, and the fourth port 5a is connected to the seventh port 5d. Specifically, the first port 51 is connected to the third port 53, the fourth port 54 is connected to the sixth port 56, the first port 61 is connected to the third port 63, and the fourth port 64 is connected to the fifth port 65. The first branch L1, the third branch L3, and the fourth branch L4 are connected. Along the coolant flow direction, the outlet of the first pump P1, the third heat exchanger 103, the motor heat exchange device 102, the second heat exchange section 22, and the inlet of the first pump P1 are sequentially connected. Heat is released to the atmosphere through the third heat exchanger 103, lowering the coolant temperature and achieving motor cooling.

[0107] When the ambient temperature is low and the humidity is high, the windshield is prone to fogging, posing a safety hazard. The passenger cabin requires heating and dehumidification, so the thermal management system operates in heating and dehumidification mode. Based on the battery's heat exchange requirements, there are four heating and dehumidification modes: the first, the second, the third, and the fourth.

[0108] When the passenger cabin requires heating and dehumidification, the thermal management system operates in the first heating and dehumidification mode. (See also...) Figure 14Compressor 1 is turned on, and the refrigerant system is in operation. In the coolant system, the first valve port 1a is connected to the second valve port 1b, the first valve port 1a is connected to the third valve port 1c, the fourth valve port 2a is connected to the fifth valve port 2b, the fourth valve port 2a is connected to the sixth valve port 2c, the seventh valve port 3a is connected to the ninth valve port 3c, the first port 4a is connected to the second port 4b, the fourth port 5a is connected to the fifth port 5b, the sixth port 5c is connected to the seventh port 5d, the eighth port 6a is connected to the ninth port 6b, the eighth port 6a is connected to the tenth port 6c, and the first port... Port 8a is connected to the second connecting port 8b, and the fourth connecting port 9a is connected to the fifth connecting port 9b. Specifically, port 51 is connected to port 52, port 51 to port 53, port 54 to port 56, and port 55 to port 56. Port 61 is connected to port 62, port 63 to port 64, port 64 to port 65, and interface 71 to interface 72. Interface 73 is connected to interface 74. This forms four coolant circuits.

[0109] In the first coolant circuit, the first branch L1 is connected to the fifth branch L5; along the coolant flow direction, the outlet of the first pump P1, the fourth heat exchanger 104, the second heat exchange section 22 and the inlet of the first pump P1 are connected in sequence.

[0110] In the second coolant circuit, the second branch L2 is connected to the sixth branch L6; along the coolant flow direction, the outlet of the second pump P2, the fifth heat exchanger 105, the fourth heat exchange section 42, and the inlet of the second pump P2 are sequentially connected. The humid air in the air conditioning unit first flows through the lower-temperature fifth heat exchanger 105, where the moisture in the air is condensed upon cooling, thus achieving dehumidification; then it flows through the higher-temperature fourth heat exchanger 104, where the dehumidified air is heated, thus achieving heating and dehumidification.

[0111] In the third coolant circuit, the first branch L1, the second branch L2, the third branch L3, and the fourth branch L4 are connected; the outlet of the first pump P1, the third heat exchanger 103, the fourth heat exchange section 42, the second pump P2, the motor heat exchange device 102, the second heat exchange section 22, and the inlet of the second pump P2 are connected sequentially. When the refrigerant system provides excess heat to the passenger cabin, the excess heat is released to the atmosphere through the third heat exchanger 103.

[0112] In the fourth coolant circuit, the second branch L2, the third branch L3, and the fourth branch L4 are connected. Along the coolant flow direction, the outlet of the second pump P2, the motor heat exchanger 102, the third heat exchanger 103, and the fourth heat exchange section 42 (i.e., the inlet of the second pump P2) are connected sequentially. The coolant cooled in the fourth heat exchange section 42 flows to the motor heat exchanger 102, achieving motor cooling.

[0113] When the passenger cabin requires heating and dehumidification, the thermal management system operates in the second heating and dehumidification mode. (See also...) Figure 15 When compressor 1 is turned on, the refrigerant system is in operation. In the coolant system, the first valve port 1a is connected to the second valve port 1b, the first valve port 1a is connected to the third valve port 1c, the fourth valve port 2a is connected to the fifth valve port 2b, the fourth valve port 2a is connected to the sixth valve port 2c, the seventh valve port 3a is connected to the ninth valve port 3c, the first port 4a is connected to the second port 4b, the fourth port 5a is connected to the fifth port 5b, the sixth port 5c is connected to the seventh port 5d, the eighth port 6a is connected to the ninth port 6b, the eighth port 6a is connected to the tenth port 6c, the eleventh port 7a is connected to the twelfth port 7b, and the first connecting port 8a is connected to the second connecting port 8b. The fourth connecting port 9a is connected to the fifth connecting port 9b, and the fourth connecting port 9a is connected to the sixth connecting port 9c. Specifically, the first port 51 is connected to the second port 52, the first port 51 to the third port 53, the fourth port 54 to the sixth port 56, and the fifth port 55 to the sixth port 56. Similarly, the first port 61 is connected to the second port 62, the third port 63 to the fourth port 64, the fourth port 64 to the fifth port 65, and the sixth port 66 to the seventh port 67. The first interface 71 is connected to the second interface 72, the third interface 73 to the fourth interface 74, and the third interface 73 to the fifth interface 75. The coolant system forms the first, second, third, and fourth coolant circuits in the first heating and dehumidification mode described above, and also forms a fifth and sixth coolant circuit.

[0114] In the fifth coolant circuit, the second branch L2, the seventh branch L7, and the first flow path D1 are connected; along the coolant flow direction, the outlet of the second pump P2, the third pump P3, the battery heat exchange device 101, the fourth heat exchange section 42, and the inlet of the second pump P2 are connected in sequence. The coolant cooled in the fourth heat exchange section 42 flows to the battery heat exchange device 101 to achieve battery cooling.

[0115] In the sixth coolant circuit, the outlet of the third pump P3, the battery heat exchange device 101, and the inlet of the third pump P3 are connected in sequence.

[0116] When the passenger cabin requires heating and dehumidification, the thermal management system operates in the third heating and dehumidification mode. (See also...) Figure 16When compressor 1 is turned on, the refrigerant system is in operation. In the coolant system, the first valve port 1a is connected to the second valve port 1b, the fourth valve port 2a is connected to the sixth valve port 2c, the seventh valve port 3a is connected to the ninth valve port 3c, the first port 4a is connected to the second port 4b, the fourth port 5a is connected to the fifth port 5b, the sixth port 5c is connected to the seventh port 5d, the eighth port 6a is connected to the ninth port 6b, the eighth port 6a is connected to the tenth port 6c, the eleventh port 7a is connected to the twelfth port 7b, and the first connecting port 8a is connected to the second connecting port 8b. A connecting port 8a is connected to a third connecting port 8c, a fourth connecting port 9a is connected to a fifth connecting port 9b, that is, a first port 51 is connected to a second port 52, a fifth port 55 is connected to a sixth port 56, a first port 61 is connected to a second port 62, a third port 63 is connected to a fourth port 64, a fourth port 64 is connected to a fifth port 65, a sixth port 66 is connected to a seventh port 67, a first interface 71 is connected to a second interface 72, a first interface 71 is connected to a sixth interface 76, and a third interface 73 is connected to a fourth interface 74. The coolant system forms the first coolant circuit, the second coolant circuit, and the fourth coolant circuit of the first heating and dehumidification mode described above, and also forms a third coolant circuit and a fifth coolant circuit.

[0117] The third coolant circuit is connected to the first branch L1, the third flow path D3, the seventh branch L7, and the fourth flow path D4; the outlet of the first pump P1, the third pump P3, the battery heat exchange device 101, the second heat exchange section 22, and the inlet of the first pump P1 are connected in sequence. The coolant heated in the second heat exchange section 22 flows to the battery heat exchange device 101 to heat the battery.

[0118] The fifth coolant circuit is connected in sequence to the outlet of the third pump P3, the battery heat exchange device 101, and the inlet of the third pump P3.

[0119] When the passenger cabin requires heating and dehumidification, the thermal management system operates in the fourth heating and dehumidification mode. (See also...) Figure 17 When compressor 1 is turned on, the refrigerant system is in operation. In the coolant system, the first valve port 1a is connected to the second valve port 1b, the seventh valve port 3a is connected to the eighth valve port 3b, the first port 4a is connected to the second port 4b, the fourth port 5a is connected to the fifth port 5b, the sixth port 5c is connected to the seventh port 5d, the eighth port 6a is connected to the ninth port 6b, the eighth port 6a is connected to the tenth port 6c, the first connecting port 8a is connected to the second connecting port 8b, and the fourth connecting port 9a is connected to the fifth connecting port 9b. The coolant system forms the first and second coolant circuits of the first heating and dehumidification mode, and also forms a third coolant circuit.

[0120] In the third coolant circuit, the second branch L2 is connected to the fourth branch L4; along the coolant flow direction, the outlet of the second pump P2, the motor heat exchange device 102, the fourth heat exchange section 42 and the inlet of the second pump P2 are connected in sequence. The motor heat exchange device 102 absorbs the waste heat of the motor, which raises the temperature of the coolant in the fourth heat exchange section 42. The coolant in the fourth heat exchange section 42 exchanges heat with the refrigerant in the third heat exchange section 41 for heating and dehumidification of the passenger cabin.

[0121] When the ambient temperature and humidity are high, the thermal management system is in cooling and dehumidification mode. Depending on whether the battery has heat dissipation and cooling requirements, it is divided into the first cooling and dehumidification mode and the second cooling and dehumidification mode.

[0122] When the passenger cabin requires cooling and dehumidification, the thermal management system operates in the first cooling and dehumidification mode. (See also...) Figure 18 When compressor 1 is turned on, the refrigerant system is in operation. In the coolant system, the first valve port 1a is connected to the second valve port 1b, the first valve port 1a is connected to the third valve port 1c, the fourth valve port 2a is connected to the fifth valve port 2b, the seventh valve port 3a is connected to the ninth valve port 3c, the first port 4a is connected to the second port 4b, the fourth port 5a is connected to the seventh port 5d, the eighth port 6a is connected to the ninth port 6b, the eleventh port 7a is connected to the twelfth port 7b, the first connecting port 8a is connected to the second connecting port 8b, and the fourth connecting port 9a is connected to the fifth... Connecting port 9b is connected; connecting port 9a is connected to connecting port 9c; that is, connecting port 51 is connected to port 52; connecting port 51 is connected to port 53; connecting port 54 is connected to port 56; connecting port 61 is connected to port 63; connecting port 64 is connected to port 65; connecting port 66 is connected to port 67; connecting interface 71 is connected to interface 72; connecting interface 73 is connected to interface 74; connecting interface 73 is connected to interface 75. The coolant system forms five coolant circuits.

[0123] In the first coolant circuit, the first branch L1 is connected to the fifth branch L5; along the coolant flow direction, the outlet of the first pump P1, the fourth heat exchanger 104, the second heat exchange section 22 and the inlet of the first pump P1 are connected in sequence.

[0124] In the second coolant circuit, the second branch L2 is connected to the sixth branch L6; along the coolant flow direction, the outlet of the second pump P2, the fifth heat exchanger 105, the fourth heat exchange section 42 and the inlet of the second pump P2 are connected in sequence.

[0125] In the third coolant circuit, the first branch L1, the third branch L3, and the fourth branch L4 are connected. Along the coolant flow direction, the outlet of the first pump P1, the third heat exchanger 103, the motor heat exchange device 102, the second heat exchange section 22, and the inlet of the first pump P1 are sequentially connected. Heat is released to the atmosphere through the third heat exchanger 103, lowering the coolant temperature. With the circulating flow of the coolant, heat dissipation from the motor is achieved, and the heat exchange requirements at the second heat exchanger 2 are met.

[0126] In the fourth coolant circuit, the second branch L2, the seventh branch L7, and the first flow path D1 are connected; along the coolant flow direction, the outlet of the second pump P2, the third pump P3, the battery heat exchange device 101, the fourth heat exchange section 42, and the inlet of the second pump P2 are connected in sequence. The coolant cooled in the fourth heat exchange section 42 flows to the battery heat exchange device 101 to achieve battery cooling.

[0127] In the fifth coolant circuit, the outlet of the third pump P3, the battery heat exchange device 101, and the inlet of the third pump P3 are connected in sequence.

[0128] When the passenger cabin requires cooling and dehumidification, the thermal management system operates in the second cooling and dehumidification mode. (See also...) Figure 19 When compressor 1 is turned on, the refrigerant system is in operation. In the coolant system, the first valve port 1a is connected to the second valve port 1b, the first valve port 1a is connected to the third valve port 1c, the fourth valve port 2a is connected to the fifth valve port 2b, the seventh valve port 3a is connected to the ninth valve port 3c, the first port 4a is connected to the second port 4b, the fourth port 5a is connected to the seventh port 5d, the eighth port 6a is connected to the ninth port 6b, the first connecting port 8a is connected to the second connecting port 8b, and the fourth connecting port 9a is connected to the fifth connecting port 9b. Specifically, the first port 51 is connected to the second port 52, the first port 51 is connected to the third port 53, the fourth port 54 is connected to the sixth port 56, the first port 61 is connected to the third port 63, the fourth port 64 is connected to the fifth port 65, the first interface 71 is connected to the second interface 72, and the third interface 73 is connected to the fourth interface 74. The coolant system forms the first, second, and third coolant circuits of the aforementioned first refrigeration and dehumidification mode.

[0129] According to another specific embodiment of the thermal management system of this application, the first valve device 5, the second valve device 6, and the third valve device 7 are all independent components. The first port 51, the second port 52, the third port 53, the fourth port 54, the fifth port 55, the sixth port 56, and the seventh port 57 are disposed in the valve body of the first valve device 5; the first port 61, the second port 62, the third port 63, the fourth port 64, the fifth port 65, the sixth port 66, and the seventh port 67 are disposed in the valve body of the second valve device 6; and the first interface 71, the second interface 72, the third interface 73, the fourth interface 74, the fifth interface 75, and the sixth interface 76 are disposed in the valve body of the third valve device 7. Optionally, the first valve device 5 and the second valve device 6 are both seven-way valves, and the third valve device 7 is a six-way valve.

[0130] For details, see Figures 20 to 25 The first valve device 5 has six states. In the first state, the first port 51 is connected to the third port 53, and the fourth port 54 is connected to the sixth port 56. In the second state, the first port 51 is connected to the second port 52, and the fifth port 55 is connected to the sixth port 56. In the third state, the first port 51 is connected to the second port 52, the first port 51 is connected to the third port 53, and the fourth port 54 is connected to the sixth port 56. In the fourth state, the first port 51 is connected to the second port 52, the first port 51 is connected to the third port 53, the fourth port 54 is connected to the sixth port 56, and the fifth port 55 is connected to the sixth port 56. In the fifth state, the first port 51 is connected to the second port 52, the third port 53 is connected to the fourth port 54, and the sixth port 56 is connected to the seventh port 57. In the sixth state, the first port 51 is connected to the second port 52, and the sixth port 56 is connected to the seventh port 57.

[0131] See Figures 26 to 32The second valve device 6 has seven states. In the first state, the first port 61 is connected to the third port 63, and the fourth port 64 is connected to the fifth port 65. In the second state, the first port 61 is connected to the third port 63, the fourth port 64 is connected to the fifth port 65, and the sixth port 66 is connected to the seventh port 67. In the third state, the first port 61 is connected to the sixth port 66, and the fourth port 64 is connected to the fifth port 65. In the fourth state, the first port 61 is connected to the second port 62, and the third port 63 is connected to the fifth port 65. When the second valve device 6 is in the fifth state, the first port 61 is connected to the second port 62, the third port 63 is connected to the fourth port 64, and the fourth port 64 is connected to the fifth port 65. When the second valve device 6 is in the sixth state, the first port 61 is connected to the second port 62, the third port 63 is connected to the fourth port 64, the fourth port 64 is connected to the fifth port 65, and the sixth port 66 is connected to the seventh port 67. When the second valve device 6 is in the seventh state, the first port 61 is connected to the second port 62, the third port 63 is connected to the fourth port 64, and the sixth port 66 is connected to the seventh port 67.

[0132] See Figures 33 to 36 The third valve device 7 has four states. When the third valve device 7 is in the first state, the first interface 71 is connected to the second interface 72, and the third interface 73 is connected to the fourth interface 74. When the third valve device 7 is in the second state, the first interface 71 is connected to the second interface 72, the third interface 73 is connected to the fourth interface 74, and the third interface 73 is connected to the fifth interface 75. When the third valve device 7 is in the third state, the first interface 71 is connected to the second interface 72, the third interface 73 is connected to the fifth interface 75. When the third valve device 7 is in the fourth state, the first interface 71 is connected to the second interface 72, the first interface 71 is connected to the sixth interface 76, and the third interface 73 is connected to the fourth interface 74.

[0133] The first hybrid heating mode of the thermal management system in this embodiment is roughly the same as the system connection state in the first hybrid heating mode of the previous embodiment. The difference is that the first valve device 5 is in the second state, the second valve device 6 is in the seventh state, and the third valve device 7 is in the fourth state.

[0134] The second hybrid heating mode of the thermal management system in this embodiment is roughly the same as the system connection state in the second hybrid heating mode of the previous embodiment. The difference is that the first valve device 5 is in the fifth state, the second valve device 6 is in the seventh state, and the third valve device 7 is in the fourth state.

[0135] The first passenger cabin single-heat mode of the thermal management system in this embodiment is roughly the same as the system connection state in the first passenger cabin single-heat mode of the previous embodiment. The difference is that the first valve device 5 is in the sixth state, the second valve device 6 is in the fourth state, and the third valve device 7 is in the first state.

[0136] The second passenger cabin single-heat mode of the thermal management system in this embodiment is roughly the same as the system connection state in the second passenger cabin single-heat mode of the previous embodiment. The difference is that the first valve device 5 is in the second state, the second valve device 6 is in the fourth state, and the third valve device 7 is in the first state.

[0137] The third passenger cabin single-heat mode of the thermal management system in this embodiment is roughly the same as the system connection state in the third passenger cabin single-heat mode of the previous embodiment. The difference is that the first valve device 5 is in the fifth state, the second valve device 6 is in the fifth state, and the third valve device 7 is in the third state.

[0138] The fourth passenger cabin single-heat mode of the thermal management system in this embodiment is roughly the same as the system connection state in the fourth passenger cabin single-heat mode of the previous embodiment. The difference is that the first valve device 5 is in the third state, the second valve device 6 is in the first state, and the third valve device 7 is in the first state.

[0139] The hot gas bypass mode of the thermal management system in this embodiment is roughly the same as the system connection state in the hot gas bypass mode of the previous embodiment. The difference is that the first valve device 5 is in the second state, the second valve device 6 is in the third state, and the third valve device 7 is in the fourth state.

[0140] The hybrid cooling mode of the thermal management system in this embodiment is roughly the same as the system connection state in the hybrid cooling mode of the previous embodiment. The difference is that the first valve device 5 is in the first state, the second valve device 6 is in the second state, and the third valve device 7 is in the second state.

[0141] The passenger cabin single-cooling mode of the thermal management system in this embodiment is roughly the same as the system connection state in the passenger cabin single-cooling mode of the previous embodiment. The difference is that the first valve device 5 is in the first state, the second valve device 6 is in the first state, and the third valve device 7 is in the first state.

[0142] The battery-only cooling mode of the thermal management system in this embodiment is roughly the same as the system connection state in the battery-only cooling mode of the previous embodiment. The difference is that the first valve device 5 is in the first state, the second valve device 6 is in the first state, and the third valve device 7 is in the third state.

[0143] The first heat dissipation mode of the thermal management system in this embodiment is roughly the same as the system connection state in the first heat dissipation mode of the previous embodiment. The difference is that the first valve device 5 is in the second state (the first port 51 is connected to the second port 52, and the fifth port 55 is connected to the sixth port 56), the second valve device 6 is in the third state, and the third valve device 7 is in the first state.

[0144] The second heat dissipation mode of the thermal management system in this embodiment is roughly the same as the system connection state in the second heat dissipation mode of the previous embodiment, except that: the first valve device 5 is in the first state, the second valve device 6 is in the first state, and the third valve device 7 is in the first state.

[0145] The first heating and dehumidification mode of the thermal management system in this embodiment is roughly the same as the system connection state in the first heating and dehumidification mode of the previous embodiment. The difference is that the first valve device 5 is in the fourth state, the second valve device 6 is in the fifth state, and the third valve device 7 is in the first state.

[0146] The second heating and dehumidification mode of the thermal management system in this embodiment is roughly the same as the system connection state in the second heating and dehumidification mode of the previous embodiment. The difference is that the first valve device 5 is in the fourth state, the second valve device 6 is in the sixth state, and the third valve device 7 is in the second state.

[0147] The third heating and dehumidification mode of the thermal management system in this embodiment is roughly the same as the system connection state in the third heating and dehumidification mode of the previous embodiment. The difference is that the first valve device 5 is in the second state, the second valve device 6 is in the sixth state, and the third valve device 7 is in the fourth state.

[0148] The fourth heating and dehumidification mode of the thermal management system in this embodiment is roughly the same as the system connection state in the fourth heating and dehumidification mode of the previous embodiment. The difference is that the first valve device 5 is in the sixth state, the second valve device 6 is in the fifth state, and the third valve device 7 is in the first state.

[0149] The first cooling and dehumidification mode of the thermal management system in this embodiment is roughly the same as the system connection state in the first cooling and dehumidification mode of the previous embodiment. The difference is that the first valve device 5 is in the third state, the second valve device 6 is in the second state, and the third valve device 7 is in the second state.

[0150] The second refrigeration and dehumidification mode of the thermal management system in this embodiment is roughly the same as the system connection state in the second refrigeration and dehumidification mode of the previous embodiment. The difference is that the first valve device 5 is in the third state, the second valve device 6 is in the first state, and the third valve device 7 is in the first state.

[0151] In this application, the "connection" between two components can be a direct connection or a connection via a pipeline. The two components may only have a pipeline between them, or they may have a valve or other component in addition to a pipeline. Similarly, the "connection" between two components in this application can be a direct connection or a connection via a pipeline. The two components may only have a pipeline connection, or they may have a valve or other component in addition to a pipeline connection.

[0152] It should be understood that the various modes of the thermal management system of this application are independent of each other and can all be started directly. There is no order in which the modes operate. The descriptions involving progressive relationships in the above description are only for ease of understanding and should not be interpreted as indicating that the two modes operate in a certain order.

[0153] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of this specification should be based on those skilled in the art. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present invention. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A thermal management system, characterized in that, It includes a first heat exchanger (2) and a second heat exchanger (4). The first heat exchanger (2) includes a first heat exchange section (21) and a second heat exchange section (22) that are isolated from each other. The second heat exchanger (4) includes a third heat exchange section (41) and a fourth heat exchange section (42) that are isolated from each other. The thermal management system includes a refrigerant system and a coolant system. The refrigerant system includes a compressor (1), a first heat exchanger (21), a throttling device (31), and a third heat exchanger (41). The coolant system includes a first branch (L1), a second branch (L2), a third branch (L3), a fourth branch (L4), and a fifth branch (L5). The first branch (L1) includes a first pump (P1) and a second heat exchanger (22). The second branch (L2) includes a second pump (P2) and a fourth heat exchanger (42). The third branch (L3) includes a third heat exchanger (103). The fourth branch (L4) includes a motor heat exchanger (102). The fifth branch (L5) includes a fourth heat exchanger (104). The coolant system includes a first valve device (5), a second valve device (6), and a third valve device (7). The first valve device (5) has a first port (51), a second port (52), a third port (53), a fourth port (54), a fifth port (55), and a sixth port (56). The second valve device (6) has a first port (61), a second port (62), a third port (63), and a fourth port (64). The third valve device (7) has a first interface (71) and a second interface (72). The first port (51) can be connected to one end of the first branch (L1), the second port (52) can be connected to the first interface (71), the third port (53), the fifth port (55) and one end of the third branch (L3) can be connected, the fourth port (54) can be connected to the other end of the first branch (L1), the sixth port (56) can be connected to one end of the fourth branch (L4), the first port (61) can be connected to the other end of the third branch (L3), the second port (62) can be connected to one end of the second branch (L2), the third port (63) can be connected to the other end of the fourth branch (L4), the fourth port (64) can be connected to the other end of the second branch (L2), the second interface (72) can be connected to one end of the fifth branch (L5), and the other end of the fifth branch (L5) can also be connected to the other end of the first branch (L1); In the first operating mode of the thermal management system, the compressor (1) is in the on state, the throttling device (31) is in the throttling state, the compressor (1), the first heat exchanger (21), the throttling device (31) and the third heat exchanger (41) are connected, the first port (51) is connected to the second port (52), the first port (51) is connected to the third port (53), the fourth port (54) is connected to the sixth port (56), and the fifth port (55) is connected to the sixth port (56). Port (56) is connected, the first port (61) is connected to the second port (62), the third port (63) is connected to the fourth port (64), the first interface (71) is connected to the second interface (72), the first branch (L1) is connected to the fifth branch (L5), the first branch (L1), the second branch (L2), the third branch (L3) and the fourth branch (L4) are connected, and the second branch (L2), the third branch (L3) and the fourth branch (L4) are connected.

2. The thermal management system as described in claim 1, characterized in that, The coolant system includes a sixth branch (L6), which includes a fifth heat exchanger (105). The second valve device (6) has a fifth port (65), and the third valve device (7) has a third interface (73) and a fourth interface (74). The fifth port (65) can communicate with the third interface (73), and the fourth interface (74) can communicate with one end of the sixth branch (L6). The other end of the sixth branch (L6) can communicate with one end of the second branch (L2). The first operating mode includes a first heating and dehumidification mode. In the first heating and dehumidification mode, the compressor (1) is in the on state, the throttling device (31) is in the throttling state, the compressor (1), the first heat exchanger (21), the throttling device (31) and the third heat exchanger (41) are connected, the first port (51) is connected to the second port (52), the first port (51) is connected to the third port (53), the fourth port (54) is connected to the sixth port (56), the fifth port (55) is connected to the sixth port (56), the first port (61) is connected to the second port (62), the third port (63) is connected to the fourth port (64), and the fourth port (64) is connected to the fifth port (65). The first interface (71) is connected to the second interface (72), the third interface (73) is connected to the fourth interface (74), the first pump (P1), the fourth heat exchanger (104) and the second heat exchange section (22) are connected, the first pump (P1), the third heat exchanger (103), the fourth heat exchange section (42), the second pump (P2), the motor heat exchange device (102) and the second heat exchange section (22) are connected, the second pump (P2), the fifth heat exchanger (105) and the fourth heat exchange section (42) are connected, and the second pump (P2), the motor heat exchange device (102), the third heat exchanger (103) and the fourth heat exchange section (42) are connected.

3. The thermal management system as described in claim 2, characterized in that, The coolant system includes a seventh branch (L7), a first flow path (D1), and a second flow path (D2). The seventh branch (L7) includes a third pump (P3) and a battery heat exchange device (101). The second valve device (6) has a sixth port (66) and a seventh port (67). The third valve device (7) has a fifth interface (75). The fifth interface (75) and the sixth port (66) can be connected to one end of the seventh branch (L7). The seventh port (67), one end of the first flow path (D1), and one end of the second flow path (D2) can be connected to the other end of the seventh branch (L7). The other end of the first flow path (D1) can be connected to one end of the second branch (L2). The other end of the second flow path (D2) can be connected to the other end of the fourth branch (L4). The first operating mode includes a second heating and dehumidification mode. In the second heating and dehumidification mode, the compressor (1) is in the on state, the throttling device (31) is in the throttling state, the first port (51) is connected to the second port (52), the first port (51) is connected to the third port (53), the fourth port (54) is connected to the sixth port (56), the fifth port (55) is connected to the sixth port (56), the first port (61) is connected to the second port (62), the third port (63) is connected to the fourth port (64), the fourth port (64) is connected to the fifth port (65), the sixth port (66) is connected to the seventh port (67), the first interface (71) is connected to the second interface (72), the third interface (73) is connected to the fourth interface (74), and the third interface (73) is connected to the fifth interface (75). The compressor (1) and the first heat exchanger are connected. (21) The throttling device (31) and the third heat exchange section (41) are connected. The first pump (P1), the fourth heat exchanger (104) and the second heat exchange section (22) are connected. The first pump (P1), the third heat exchanger (103), the fourth heat exchange section (42), the second pump (P2), the motor heat exchange device (102) and the second heat exchange section (22) are connected. The second pump (P2), the fifth heat exchanger (105) and the fourth heat exchange section (42) are connected. The second pump (P2), the motor heat exchange device (102), the third heat exchanger (103) and the fourth heat exchange section (42) are connected. The second pump (P2), the third pump (P3), the battery heat exchange device (101) and the fourth heat exchange section (42) are connected. The outlet of the third pump (P3) and the inlet of the battery heat exchange device (101) and the third pump (P3) are connected.

4. The thermal management system as described in claim 3, characterized in that, The refrigerant system includes a bypass branch (Z), a third flow path (D3), and a fourth flow path (D4). One end of the bypass branch (Z) is connected to the outlet of the compressor (1), and the other end of the bypass branch (Z) is connected to the inlet of the compressor (1). The bypass branch (Z) includes a valve component (32). The third valve device (7) has a sixth interface (76), which is connected to one end of the third flow path (D3). The other end of the third flow path (D3) is connected to one end of the seventh branch (L7). One end of the fourth flow path (D4) is connected to the other end of the seventh branch (L7), and the other end of the fourth flow path (D4) is connected to the other end of the first branch (L1). The thermal management system has a hot gas bypass mode. In the hot gas bypass mode, the compressor (1) is in the open state, the throttling device (31) and the valve component (32) are both in the throttling state, the first port (51) is connected to the second port (52), the fifth port (55) is connected to the sixth port (56), the first port (61) is connected to the sixth port (66), the first interface (71) is connected to the second interface (72), and the first interface (71) is connected to the sixth interface (76). The compressor (1), the first heat exchanger (21), and the valve component (32) are connected in the hot gas bypass mode. The flow device (31) and the third heat exchange section (41) are connected. The outlet of the compressor (1), the valve component (32) and the inlet of the compressor (1) are connected. The first pump (P1), the fourth heat exchanger (104) and the second heat exchange section (22) are connected. The first pump (P1), the third pump (P3), the battery heat exchange device (101) and the second heat exchange section (22) are connected. The third pump (P3), the battery heat exchange device (101), the motor heat exchange device (102) and the third heat exchanger (103) are connected.

5. The thermal management system as described in claim 3, characterized in that, The thermal management system has a first heat dissipation mode. In the first heat dissipation mode, the compressor (1) is in a closed state, the fifth port (55) is connected to the sixth port (56), the first port (61) is connected to the sixth port (66), and the third pump (P3), the battery heat exchange device (101), the motor heat exchange device (102) and the third heat exchanger (103) are connected.

6. The thermal management system as described in claim 4, characterized in that, The first valve device (5) has a seventh port (57) that can communicate with the first port (61), and the thermal management system has a first passenger cabin single-heat mode. In the first passenger cabin single-heat mode, the compressor (1) is in the on state, the throttling device (31) is in the throttling state, the first port (51) is connected to the second port (52), the sixth port (56) is connected to the seventh port (57), the first port (61) is connected to the second port (62), the third port (63) is connected to the fourth port (64), the first interface (71) is connected to the second interface (72), the compressor (1), the first heat exchanger (21), the throttling device (31) and the third heat exchanger (41) are connected, the first pump (P1), the fourth heat exchanger (104) and the second heat exchanger (22) are connected, and the second pump (P2), the motor heat exchanger (102) and the fourth heat exchanger (42) are connected.

7. The thermal management system as described in claim 4, characterized in that, The thermal management system has a first hybrid heating mode. In the first hybrid heating mode, the compressor (1) is in the on state, the throttling device (31) is in the throttling state, the first port (51) is connected to the second port (52), the fifth port (55) is connected to the sixth port (56), the first port (61) is connected to the second port (62), the third port (63) is connected to the fourth port (64), the sixth port (66) is connected to the seventh port (67), the first interface (71) is connected to the second interface (72), and the first interface (71) is connected to the sixth interface (76). The compressor (1), the first heat exchanger (21), the throttling device (31) and the third heat exchanger (41) are connected. The first pump (P1), the fourth heat exchanger (104) and the second heat exchanger (22) are connected. The first pump (P1), the third pump (P3), the battery heat exchanger (101) and the second heat exchanger (22) are connected. The outlet of the third pump (P3), the battery heat exchanger (101) and the inlet of the third pump (P3) are connected. The second pump (P2), the motor heat exchanger (102), the third heat exchanger (103) and the fourth heat exchanger (42) are connected.

8. The thermal management system as described in claim 3, characterized in that, The thermal management system has a first cooling and dehumidification mode. In the first cooling and dehumidification mode, the compressor (1) is in the on state, the throttling device (31) is in the throttling state, the first port (51) is connected to the second port (52), the first port (51) is connected to the third port (53), the fourth port (54) is connected to the sixth port (56), the first port (61) is connected to the third port (63), the fourth port (64) is connected to the fifth port (65), the sixth port (66) is connected to the seventh port (67), the first interface (71) is connected to the second interface (72), the third interface (73) is connected to the fourth interface (74), and the third interface (73) is connected to the fifth interface (56). 75) The compressor (1), the first heat exchanger (21), the throttling device (31) and the third heat exchanger (41) are connected. The second pump (P2), the fifth heat exchanger (105) and the fourth heat exchanger (42) are connected. The second pump (P2), the third pump (P3), the battery heat exchanger (101) and the fourth heat exchanger (42) are connected. The outlet of the third pump (P3), the battery heat exchanger (101) and the inlet of the third pump (P3) are connected. The first pump (P1), the fourth heat exchanger (104) and the second heat exchanger (22) are connected. The first pump (P1), the third heat exchanger (103), the motor heat exchanger (102) and the second heat exchanger (22) are connected.

9. The thermal management system as described in claim 6, characterized in that, The first valve device (5) includes a first valve element (10), a second valve element (20), and a third valve element (30). The first valve element (10) has a first valve port (1a), a second valve port (1b), and a third valve port (1c). The second valve element (20) has a fourth valve port (2a), a fifth valve port (2b), and a sixth valve port (2c). The third valve element (30) has a seventh valve port (3a), an eighth valve port (3b), and a ninth valve port (3c). The first valve port (1a) is capable of communicating with at least one of the second valve port (1b) and the third valve port (1c). The fourth valve port (2a) is capable of communicating with the fifth valve port (2b) and the sixth valve port (2c). c) At least one of them is connected, the seventh valve port (3a) can be connected to the eighth valve port (3b) or the ninth valve port (3c), the first valve port (1a) is the first port (51), the second valve port (1b) is the second port (52), the third valve port (1c) is the third port (53), the fifth valve port (2b) is the fourth port (54), the seventh valve port (3a) is the sixth port (56), the eighth valve port (3b) is the seventh port (57), the fourth valve port (2a) can be connected to the ninth valve port (3c), and the sixth valve port (2c) can be connected to the fifth port (55); The second valve device (6) includes a fourth valve (40), a fifth valve (50), a sixth valve (60), and a seventh valve (70). The fourth valve (40) has a first port (4a), a second port (4b), and a third port (4c). The fifth valve (50) has a fourth port (5a), a fifth port (5b), a sixth port (5c), and a seventh port (5d). The sixth valve (60) has an eighth port (6a), a ninth port (6b), and a tenth port (6c). The seventh valve (70) has an eleventh port (7a) and a twelfth port (7b). The first port (4a) can communicate with the second port (4b) or the third port (4c). The eighth port (6a) can communicate with the second port (4b) or the third port (4c). 6a) It can communicate with at least one of the ninth port (6b) and the tenth port (6c), the first port (4a) being the first port (61), the fifth port (5b) being the second port (62), the seventh port (5d) being the third port (63), the eighth port (6a) being the fourth port (64), the ninth port (6b) being the fifth port (65), the twelfth port (7b) being the seventh port (67), the second port (4b) being able to communicate with the fourth port (5a), the third port (4c) and the eleventh port (7a) being able to communicate with the sixth port (66), and the sixth port (5c) being able to communicate with the tenth port (6c); The third valve device (7) includes an eighth valve (80) and a ninth valve (90). The eighth valve (80) has a first connecting port (8a), a second connecting port (8b), and a third connecting port (8c). The ninth valve (90) has a fourth connecting port (9a), a fifth connecting port (9b), and a sixth connecting port (9c). The first connecting port (8a) can communicate with at least one of the second connecting port (8b) and the third connecting port (8c). The fourth connecting port (9a) can communicate with at least one of the second connecting port (8b) and the third connecting port (8c). It is capable of communicating with at least one of the fifth communication port (9b) and the sixth communication port (9c), wherein the first communication port (8a) is the first interface (71), the second communication port (8b) is the second interface (72), the third communication port (8c) is the sixth interface (76), the fourth communication port (9a) is the third interface (73), the fifth communication port (9b) is the fourth interface (74), and the sixth communication port (9c) is the fifth interface (75).

10. The thermal management system as described in claim 6, characterized in that, The first valve device (5), the second valve device (6), and the third valve device (7) are all independent components. The first port (51), the second port (52), the third port (53), the fourth port (54), the fifth port (55), the sixth port (56), and the seventh port (57) are located in the valve body of the first valve device (5). The first port (61), the second port (62), the third port (63), the fourth port (64), the fifth port (65), the sixth port (66), and the seventh port (67) are located in the valve body of the second valve device (6). The first interface (71), the second interface (72), the third interface (73), the fourth interface (74), the fifth interface (75), and the sixth interface (76) are located in the valve body of the third valve device (7).

Images