CN115891555A - Thermal management system and control method thereof - Google Patents

Abstract

The present application discloses a thermal management system. In the first battery cooling mode, the first flow regulating device is connected in series between the outlet of the second heat exchanger and the inlet of the first heat exchange part. The first flow regulating device is in the In the throttling state, the first heat exchange part and the second heat exchange part exchange heat, the first pump, the battery heat exchange assembly, the third heat exchanger and the second heat exchange part are connected to form a circuit, and the third heat exchanger vents to the atmosphere. Ambient heat release. Part of the battery heat is released to the atmosphere through the third heat exchanger, and part of the battery heat is absorbed through the first heat exchanger, using a relatively simple thermal management system to improve the cooling effect of the battery. The present application also provides a control method of the thermal management system.

Description

Thermal management system and control method thereof

technical field

The present application relates to the technical field of thermal management, in particular to a thermal management system and a control method thereof.

Background technique

A thermal management system in a vehicle such as an electric vehicle regulates the ambient temperature in the passenger compartment, the temperature of the battery, and the temperature of the electric motor.

When the battery is fast-charging or running under a high load, it generates a lot of heat. If the battery temperature is too high, it will affect the performance of the battery, and even damage the battery. In addition, it also poses a safety hazard. In the relevant heat management system, on the basis of the original air conditioning system, another heat dissipation system is set to cool the battery, so as to meet the heat dissipation demand of the battery. Due to the setting of another heat dissipation system, there are many components in the thermal management system, and the composition of the thermal management system is relatively complicated. The inventors believe that there is a need for improvement.

Contents of the invention

In view of the above-mentioned problems in the related art, the present application provides a relatively simple thermal management system and a control method thereof that can improve the cooling effect of the battery.

In order to achieve the above purpose, this application adopts the following technical solutions: A thermal management system includes: a compressor, a second heat exchanger, a first flow regulating device, a first heat exchanger, a third heat exchanger, and a battery heat exchange assembly And the first pump, the second heat exchanger and the third heat exchanger are respectively used for heat exchange with the atmospheric environment, the first heat exchanger includes a first heat exchange part and a second heat exchange part, so The first heat exchange part is not in communication with the second heat exchange part;

The outlet of the compressor can communicate with the inlet of the second heat exchanger, the outlet of the second heat exchanger can communicate with the inlet of the first flow regulating device, and the outlet of the first flow regulating device Can communicate with the inlet of the first heat exchange part, and the outlet of the first heat exchange part can communicate with the inlet of the compressor;

The heat management system has a first battery heat dissipation mode, and in the first battery heat dissipation mode, the compressor, the second heat exchanger, the first flow regulating device, and the first heat exchange part connected to form a circuit, the first flow regulating device is connected in series between the outlet of the second heat exchanger and the inlet of the first heat exchange part, the first flow regulating device is in a throttling state, the The first pump, the battery heat exchange assembly, the third heat exchanger, and the second heat exchange part are connected to form a circuit, the third heat exchanger releases heat to the atmosphere, and the first heat exchange part heat exchange with the second heat exchange unit.

In this application, in the first battery heat dissipation mode, the first flow regulating device is connected in series between the outlet of the second heat exchanger and the inlet of the first heat exchange part, and the first heat exchange part and the second heat exchange part For heat exchange, the first pump, the battery heat exchange assembly, the third heat exchanger and the second heat exchange part are connected to form a circuit, and the third heat exchanger releases heat to the atmosphere. A part of the battery heat is released to the atmosphere through the third heat exchanger, and a part of the battery heat is absorbed through the first heat exchanger, and a relatively simple thermal management system is used to improve the cooling effect of the battery.

In order to achieve the above purpose, the present application also adopts the following technical solution: a control method of a thermal management system, the thermal management system includes a compressor, a second heat exchanger, a first flow regulating device, a first heat exchanger, a second Three heat exchangers, a battery heat exchange assembly, a first pump and a controller, the controller is used to execute the control method of the thermal management system, the first heat exchanger includes a first heat exchange part and a second heat exchange part, the first heat exchange part is not in communication with the second heat exchange part;

The control method of the thermal management system includes: the controller controls the thermal management system to enter a first battery heat dissipation mode, and in the first battery heat dissipation mode, the compressor, the second heat exchanger, The first flow regulating device and the first heat exchange part are connected to form a circuit, the compressor is started and used to provide power for fluid flow, the first flow regulating device is in a throttling state, and the compressor The outlet of the second heat exchanger communicates with the inlet of the second heat exchanger, the outlet of the second heat exchanger communicates with the inlet of the first flow regulating device, and the outlet of the first flow regulating device communicates with the first heat exchanger The inlet of the heat part is connected, the outlet of the first heat exchange part is connected with the inlet of the compressor; the first pump, the battery heat exchange assembly, the third heat exchanger and the second heat exchange The heat part is connected to form a circuit, the first pump is activated and used to provide power for fluid flow, the first heat exchange part exchanges heat with the second heat exchange part, and the second heat exchanger and the The third heat exchangers all release heat to the atmosphere.

In this application, the controller controls the thermal management system to enter the first battery heat dissipation mode, the first pump, the battery heat exchange assembly, the third heat exchanger, and the second heat exchange part are connected to form a loop, and the third heat exchanger discharges heat to the atmosphere. Heat, release part of the battery heat to the atmosphere through the third heat exchanger, and absorb part of the battery heat through the first heat exchanger, using a relatively simple thermal management system to improve the cooling effect of the battery.

Description of drawings

Fig. 1 is a schematic connection diagram of an embodiment of the thermal management system of the present application;

Fig. 2 is a schematic diagram of the first heating mode of an embodiment of the thermal management system of the present application;

3 is a schematic diagram of a second heating mode of an embodiment of the thermal management system of the present application;

Fig. 4 is a schematic diagram of a third heating mode of an embodiment of the thermal management system of the present application;

5 is a schematic diagram of a fourth heating mode of an embodiment of the thermal management system of the present application;

6 is a schematic diagram of a fifth heating mode of an embodiment of the thermal management system of the present application;

Fig. 7 is a schematic diagram of the sixth heating mode of an embodiment of the thermal management system of the present application;

Fig. 8 is a schematic diagram of a waste heat recovery mode of an embodiment of the thermal management system of the present application;

9 is a schematic diagram of a defrosting mode of an embodiment of the thermal management system of the present application;

Fig. 10 is a schematic diagram of the first cooling mode of an embodiment of the thermal management system of the present application;

Fig. 11 is a schematic diagram of the second cooling mode of an embodiment of the thermal management system of the present application;

Fig. 12 is a schematic diagram of a third cooling mode of an embodiment of the thermal management system of the present application;

Fig. 13 is a schematic diagram of the first hybrid heat exchange mode of an embodiment of the thermal management system of the present application;

Fig. 14 is a schematic diagram of the second mixed heat exchange mode of an embodiment of the thermal management system of the present application;

FIG. 15 is a schematic diagram of the first battery cooling mode of an embodiment of the thermal management system of the present application;

FIG. 16 is a schematic diagram of a second battery cooling mode of an embodiment of the thermal management system of the present application;

Fig. 17 is a schematic diagram of the first motor heat dissipation mode of an embodiment of the thermal management system of the present application;

18 is a schematic diagram of a second motor heat dissipation mode of an embodiment of the thermal management system of the present application;

FIG. 19 is a schematic diagram of a third motor cooling mode of an embodiment of the thermal management system of the present application.

Detailed ways

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present application as recited in the appended claims.

The terminology used in this application is for the purpose of describing particular embodiments only, and is not intended to limit the application. As used in this application and the appended claims, the singular forms "a", "the", and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise.

It should be understood that "first", "second" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "a" or "one" do not mean a limitation of quantity, but mean that there is at least one; "plurality" means two or more than two. Unless otherwise indicated, terms such as "front", "rear", "lower" and/or "upper" are used for convenience of description only and are not intended to be limiting to a position or orientation in space. "Includes" or "comprises" and similar terms mean that the elements or items listed before "comprises" or "comprises" include the elements or items listed after "comprises" or "comprises" and their equivalents, and do not exclude other elements or objects.

The heat exchanger of the exemplary embodiment of the present application will be described in detail below with reference to the accompanying drawings. In the case of no conflict, the features in the following embodiments and implementation manners may complement each other or be combined with each other.

According to a specific embodiment of the heat exchanger of the present application, as shown in FIG. 1 , the thermal management system includes a first heat exchanger 3 and a fifth heat exchanger 2 . The first heat exchanger 3 includes a first heat exchange part 31, a second heat exchange part 33 and a fifth heat exchange part 32. The first heat exchange part 31 and the second heat exchange part 33 can perform heat exchange. The heat exchange part 31 and the fifth heat exchange part 32 can perform heat exchange, the second heat exchange part 33 and the fifth heat exchange part 32 can perform heat exchange, and the first heat exchange part 31, the second heat exchange part 33 and the fifth heat exchange part The parts 32 are respectively provided with flow channels, and the flow channels of the first heat exchange part 31 , the flow channels of the second heat exchange part 33 and the flow channels of the fifth heat exchange part 32 are isolated from each other and do not communicate with each other. The fifth heat exchanger 2 includes a third heat exchange part 21 and a fourth heat exchange part 22, the third heat exchange part 21 and the fourth heat exchange part 22 can perform heat exchange, the third heat exchange part 21 and the fourth heat exchange part Each part 22 is provided with flow passages, and the flow passages of the third heat exchange part 21 and the flow passages of the fourth heat exchange part 22 are isolated from each other and do not communicate with each other. The refrigerant can exchange heat with the cooling liquid through the first heat exchanger 3 , and the cooling liquid in one circuit can exchange heat with the cooling liquid in the other circuit through the first heat exchanger 3 . The refrigerant can exchange heat with the cooling liquid through the fifth heat exchanger 2 . The first heat exchanger 3 and the fifth heat exchanger 2 can be one of a plate heat exchanger, a casing heat exchanger, a parallel flow liquid-cooled heat exchanger or other liquid-cooled heat exchangers, the first heat exchanger Heater 3 and fifth heat exchanger 2 may be the same or different.

The various components of the thermal management system are connected by pipelines to form two major systems, namely the refrigerant system and the cooling liquid system. The refrigerant system and the cooling liquid system are isolated and not connected to each other. Refrigerant circulates in the refrigerant system, and coolant circulates in the coolant system. The refrigerant can be R134A or carbon dioxide or other heat exchange medium, and the coolant can be a mixed solution of ethanol and water or other cooling medium. Wherein, the flow channel of the first heat exchange part 31 and the flow channel of the third heat exchange part 21 are connected to the refrigerant system, the flow channel of the second heat exchange part 33, the flow channel of the fourth heat exchange part 22 and the fifth heat exchange part The flow channel of the hot part 32 is connected to the coolant system.

It should be explained that "the flow channel of the first heat exchange part 31 and the flow channel of the third heat exchange part 21 are connected to the refrigerant system" means that the refrigerant system includes the first heat exchange part 31 and the third heat exchange part 21 Part 21, the refrigerant in the refrigerant system can flow into and out of the flow channel of the first heat exchange part 31 and the flow channel of the third heat exchange part 21, the inlet and outlet of the first heat exchange part 31 and the third heat exchange part 21 The inlet and outlet of the refrigerant system can be connected with other components in the refrigerant system through pipelines, and form a circuit after being connected through pipelines when the thermal management system is working. In the same way, the flow passages of the second heat exchange part 33 , the flow passages of the fourth heat exchange part 22 and the flow passages of the fifth heat exchange part 32 are connected to the cooling liquid system, refer to the above explanation.

The refrigerant system includes: a compressor 1, a first flow regulating device 8, a second flow regulating device 7, a third flow regulating device 6, a second heat exchanger 101, a fourth heat exchanger 102, and a first heat exchange part 31 , the third heat exchange part 21 and a plurality of valve devices, the above-mentioned components may be indirectly connected through pipelines or valves, or may be integrated into an integral structure.

The first flow regulating device 8 has the functions of cut-off and throttling. The first flow regulating device 8 is arranged before the entrance of the first heat exchange part 31 , and the first flow regulating device 8 is arranged close to the entrance of the first heat exchange part 31 . The second flow regulating device 7 has functions of cut-off and throttling. The second flow regulating device 7 is arranged before the entrance of the fourth heat exchanger 102 , and the second flow regulating device 7 is arranged near the entrance of the fourth heat exchanger 102 . The first flow regulating device 8 has the functions of conduction, cutoff and throttling. Optionally, the first flow regulating device 8 , the second flow regulating device 7 and the third flow regulating device 6 are electronic expansion valves.

In this embodiment, the multiple valve devices include a first valve 16, a second valve 17, a third valve 18 and a fourth valve 19, and the first valve 16, the second valve 17, the third valve 18 and the fourth valve 19 can be As a single valve part, a combination of at least two valve parts is also possible. The first valve 16 and the second valve 17 have cut-off and conduction functions. The third valve 18 has the function of forward conduction and reverse cutoff. The fourth valve 19 has a first valve port, a second valve port and a third valve port, and the first valve port can communicate with one of the second valve port and the third valve port. Optionally, the first valve 16 and the second valve 17 are stop valves, the third valve 18 is a one-way valve, and the fourth valve 19 is a three-way valve or a three-way proportional valve.

In the refrigerant system, the outlet of the compressor 1 is connected to the inlet of the third heat exchange part 21 , and the outlet of the third heat exchange part 21 is connected to the inlet of the third flow regulating device 6 and the first end of the first valve 16 . The outlet of the third flow regulating device 6 is connected with the first valve port of the fourth valve 19, the second valve port of the fourth valve 19 is connected with the inlet of the second heat exchanger 101, and the third valve port of the fourth valve 19 is connected with the inlet of the second heat exchanger 101. The outlet of the second heat exchanger 101 , the first end of the second valve 17 and the first end of the third valve 18 are connected. The second end of the first valve 16 is connected with the second end of the third valve 18, the inlet of the first flow regulating device 8 and the inlet of the second flow regulating device 7, and the outlet of the first flow regulating device 8 is connected with the first heat exchange The inlet of the section 31 is connected, and the outlet of the second flow regulating device 7 is connected with the inlet of the fourth heat exchanger 102 . The second end of the second valve 17 is connected with the inlet of the compressor 1 , the outlet of the fourth heat exchanger 102 and the outlet of the first heat exchange part 31 .

The third valve 18 conducts in the direction from the first end to the second end, and blocks in the direction from the second end to the first end. In some other embodiments, the third valve 18 can also be a cut-off valve, which can be opened only when conduction is required.

In some other embodiments, the refrigerant system further includes a gas-liquid separator 20. The gas-liquid separator 20 is arranged before the inlet of the compressor 1. The refrigerant undergoes gas-liquid separation in the gas-liquid separator 20, and the liquid refrigerant is stored In the gas-liquid separator 20, the gaseous refrigerant flows into the compressor 1. The structure and working principle of the gas-liquid separator 20 are well known to those skilled in the art, and will not be repeated in this application.

The coolant system includes a battery heat exchange assembly 14, a motor heat exchange assembly 13, a first heating device 15, a second heating device 12, a third heat exchanger 105, a sixth heat exchanger 104, a seventh heat exchanger 103, a The second heat exchange part 33, the fourth heat exchange part 22, the fifth heat exchange part 32, a plurality of fluid drive devices and a plurality of flow direction switching devices, the above-mentioned components can be connected indirectly through pipelines or valves, or can be Integrated into one structure.

A plurality of fluid driving devices including a first pump 10 , a second pump 9 and a third pump 11 are used to provide power for the flow of cooling fluid in the cooling fluid system. Optionally, the first pump 10, the second pump 9 and the third pump 11 are electronic water pumps, and the types and specifications of the first pump 10, the second pump 9 and the third pump 11 can be the same or different, depending on the thermal management System requirements are selected.

The battery heat exchange assembly 14 is used for thermal management of the battery. Optionally, the battery heat exchanging assembly 14 can be an integrated component that is integrated with the battery, or can be an independent component that is then assembled with the battery. The motor heat exchanging assembly 13 is used for thermal management of the motor. Optionally, the motor heat exchanging assembly 13 may be an integrated component that is integrated with the motor, or may be an independent component that is then assembled with the motor. The first heating device 15 and the second heating device 12 are used to heat the coolant. In this embodiment, the first heating device 15 is connected to the entrance of the second heat exchange part 33, so that the cooling fluid heated by the first heating device 15 The liquid preferentially passes through the second heat exchange part 33 to make full use of the heating effect of the first heating device 15 . The second heating device 12 is connected before the inlet of the seventh heat exchanger 103 and the inlet of the fifth heat exchange part 32 , and the coolant heated by the first heating device 15 can be used to heat the air in the passenger compartment and heat the battery. Optionally, both the first heating device 15 and the second heating device 12 are liquid-cooled PTC electric heaters, wherein the working power of the first heating device 15 is smaller than that of the second heating device 12 .

The multiple flow direction switching devices include the first flow direction switching device 4 and the second flow direction switching device 5, and the cooling liquid system can form at least two mutually disconnected cooling liquid circuits by adjusting the working states of the multiple flow direction switching devices. This enables passenger compartment heating, motor thermal management, and battery thermal management.

The first flow direction switching device 4 includes a first port 41 , a second port 42 , a third port 43 , a fourth port 44 , a fifth port 45 , a sixth port 46 and a seventh port 47 . In some embodiments, the first flow direction switching device 4 is a seven-way valve, and the above-mentioned multiple ports are not connected to each other on the surface of the seven-way valve. In some embodiments, the first flow direction switching device 4 is a combined valve element of a five-way valve and a four-way valve, wherein the five-way valve includes a first port 41, a second port 42, a third port 43, and a fourth port 44 And the first intermediate port 48, the four-way valve includes the fifth port 45, the sixth port 46, the seventh port 47 and the second intermediate port 49, the first intermediate port 48 communicates with the second intermediate port 49, and the five-way valve communicates with the four-way valve. The structure and working principle of the through valve are well known to those skilled in the art, and will not be repeated in this application.

The second flow direction switching device 5 includes a first interface 51 , a second interface 52 , a third interface 53 , a fourth interface 54 and a fifth interface 55 . In some embodiments, the second flow direction switching device 5 is a five-way valve, and the above-mentioned multiple ports are not connected to each other on the surface of the five-way valve. In some embodiments, the second flow direction switching device 5 is a combined valve element of a three-way valve and a four-way valve, wherein the four-way valve includes a first port 51, a second port 52, a third port 53 and a first intermediate port 57. The three-way valve includes a fourth interface 54, a fifth interface 55, and a second intermediate interface 56. The first intermediate interface 57 communicates with the second intermediate interface 56. The structure and working principle of the three-way valve and the four-way valve are in the field It is well known to those skilled in the art, and will not be repeated in this application.

In some other embodiments, the above-mentioned first flow direction switching device 4 and second flow direction switching device 5 can replace other types of valves or combinations of other types of valves according to their functions, such as one-way valves, shut-off valves, or combinations thereof, etc. .

In the coolant system, the outlet of the first pump 10 is connected to the inlet of the battery heat exchange assembly 14 , and the outlet of the battery heat exchange assembly 14 is connected to the third interface 53 . The inlet of the first pump 10 is connected with the outlet of the second heat exchange part 33, the inlet of the second heat exchange part 33 is connected with the outlet of the first heating device 15, and the inlet of the first heating device 15 is connected with the outlet of the third heat exchanger 105. The outlet is connected to the fourth interface 54 , and the inlet of the third heat exchanger 105 is connected to the fifth interface 55 .

The outlet of the second pump 9 is connected to the inlet of the fourth heat exchange part 22, the outlet of the fourth heat exchange part 22 is connected to the inlet of the second heating device 12, and the outlet of the second heating device 12 is connected to the seventh heat exchanger 103. The inlet and the inlet of the fifth heat exchange part 32 are connected, the outlet of the seventh heat exchanger 103 is connected with the first port 41, the outlet of the fifth heat exchange part 32 is connected with the fourth port 44, and the second port 42 is connected with the second pump 9 ingress connections.

The outlet of the third pump 11 is connected to the seventh port 47 , the third port 43 is connected to the inlet of the sixth heat exchanger 104 , and the outlet of the sixth heat exchanger 104 is connected to the inlet of the third pump 11 . The inlet of the motor heat exchange assembly 13 is connected to the second interface 52 , the outlet of the motor heat exchange assembly 13 is connected to the fifth port 45 , and the sixth port 46 is connected to the first interface 51 .

By switching the first flow direction switching device 4 , the communication relationship among the sixth heat exchanger 104 , the motor heat exchange assembly 13 , the seventh heat exchanger 103 and the fifth heat exchange part 32 can be adjusted. By switching the second flow direction switching device 5 , the communication relationship among the third heat exchanger 105 , the battery heat exchange assembly 14 and the motor heat exchange assembly 13 can be adjusted.

The thermal management system provided by the embodiment of the present application can be applied to an electric vehicle. The electric vehicle has an air conditioning box 100 that exchanges heat with the air in the passenger compartment. The fourth heat exchanger 102 and the seventh heat exchanger 103 are arranged in the air conditioning box 100. The fourth heat exchanger 102 and the seventh heat exchanger 103 are used to exchange heat with the air in the air conditioning box 100 to adjust the temperature of the passenger compartment. The seventh heat exchanger 103 is located on the downstream side of the air flow relative to the fourth heat exchanger 102 , and a fan is provided in the air conditioning box 100 for guiding the flow of air in the air conditioning box 100 . In this embodiment, the second heat exchanger 101, the third heat exchanger 105 and the sixth heat exchanger 104 are arranged near the front air intake grille of the automobile, and the second heat exchanger 101, the third heat exchanger 105 and the sixth heat exchanger The six heat exchangers 104 are used for heat exchange with the atmospheric environment, for releasing heat into the atmospheric environment or absorbing heat from the atmospheric environment, and a fan device is provided for guiding the flow of air. The compressor 1 and the gas-liquid separator 20 are arranged in the front machine chamber of the driver's cab. In some embodiments, the second heat exchanger 101 is arranged at the air intake grille, and the third heat exchanger 105 and the sixth heat exchanger 104 are arranged on both sides respectively. In some embodiments, the sixth heat exchanger 104 and the second heat exchanger 101 are arranged at the intake grille, the second heat exchanger 101 is located on the downstream side of the air flow relative to the sixth heat exchanger 104, and the third heat exchanger 101 is located at the downstream side of the air flow. The heater 105 may be provided at the floor of the engine compartment.

The second heat exchanger 101, the seventh heat exchanger 103, the fourth heat exchanger 102, the third heat exchanger 105 and the sixth heat exchanger 104 are all air-cooled heat exchangers, and are all used for heat exchange with air , the structure of the air-cooled heat exchanger is well known to those skilled in the art, and will not be repeated in this application. Optionally, the second heat exchanger 101 is used as an outdoor heat exchanger, the seventh heat exchanger 103 is used as a heater core, the fourth heat exchanger 102 is used as an indoor evaporator, the third heat exchanger 105 and the Six heat exchangers 104 are used as low temperature water tanks.

The thermal management system of this embodiment has multiple working modes, including heating mode, cooling mode, hybrid heat exchange mode, waste heat recovery mode, defrosting mode, battery heat dissipation mode, and motor heat dissipation mode. The fourth heat exchanger 102 is used to lower the temperature of the air entering the passenger compartment, and the seventh heat exchanger 103 is used to increase the temperature of the air entering the passenger compartment.

The thermal management system of this embodiment is not only applicable to vehicles, but also applicable to other heat exchange systems that require thermal management. For the convenience of description, the specification of this application will be described by taking the application to vehicles as an example.

As shown in Figures 2 to 7, when the ambient temperature is low, according to whether there is a heating demand for the passenger compartment and the battery, and the ambient temperature of the atmosphere, the first flow regulating device 8, the second flow regulating device 7, and the second flow regulating device 7 can be adjusted. The states of the three flow regulating devices 6 , the first flow direction switching device 4 , the second flow direction switching device 5 and multiple valve devices realize the functions of single heating of the passenger compartment, single heating of the battery or simultaneous heating of the passenger compartment and the battery.

Referring to Fig. 2, when only the passenger compartment has a heating demand, the thermal management system is in the first heating mode. The compressor 1 is turned on, the refrigerant system is in the working state, the compressor 1, the third heat exchange part 21, the third flow regulating device 6, the fourth valve 19, the second heat exchanger 101, the second valve 17, the The circuit is connected sequentially, the first valve 16 is in the cut-off state, the second valve 17 is in the conduction state, the first valve port of the fourth valve 19 communicates with the second valve port, the first flow regulating device 8 and the second flow regulating device 8 The device 7 is in the cut-off state, the third flow regulating device 6 is in the throttling state, the refrigerant in the third heat exchange part 21 releases heat to the cooling liquid in the fourth heat exchange part 22, and the second heat exchanger 101 receives from the atmospheric environment Medium endothermic.

The second pump 9 is turned on, the first pump 10 and the third pump 11 are turned off, the first heating device 15 and the second heating device 12 are turned off, the coolant system is in a working state, the first port 41 communicates with the second port 42, and the second The pump 9, the fourth heat exchange part 22, the second heating device 12, the seventh heat exchanger 103, and the second pump 9 are sequentially connected to form a circuit, and the cooling liquid circulates, and the heated cooling liquid flows in the seventh heat exchanger Heat is released at 103 to heat the surrounding air, and the hot air is blown into the cabin, thereby realizing heating of the passenger compartment. According to the heating demand of the passenger compartment, the second heating device 12 can be selectively turned on.

In some other embodiments, when only the passenger compartment needs heating, the compressor 1 can be turned off to shut down the refrigerant system, and the second heating device 12 can be turned on to heat the cooling liquid, so as to realize the heating of the passenger compartment.

Referring to FIG. 3 , when only the battery needs heating, the thermal management system is in the second heating mode. The refrigerant system in the second heating mode is the same as the refrigerant system in the first heating mode, and reference may be made to related descriptions, which will not be repeated here.

The first pump 10 and the second pump 9 are turned on, the third pump 11 is turned off, the first heating device 15 and the second heating device 12 are turned off, the coolant system is in working state, the second port 42 communicates with the fourth port 44, and the third The interface 53 communicates with the fourth interface 54 . The first pump 10, the battery heat exchange assembly 14, the first heating device 15, the second heat exchange part 33, and the first pump 10 are sequentially connected to form a circuit, and the second pump 9, the fourth heat exchange part 22, and the second heating device 12. The fifth heat exchange part 32 and the second pump 9 are sequentially connected to form a circuit, the coolant in the fifth heat exchange part 32 releases heat to the coolant in the second heat exchange part 33, and the coolant circulates, thereby realizing The battery is heating up. According to the heating requirement of the battery, the first heating device 15 or the second heating device 12 can be selectively turned on.

In some other embodiments, when only the battery needs to be heated, the compressor 1 can be turned off to turn off the refrigerant system, and the first heating device 15 can be turned on to heat the cooling liquid, so as to realize heating of the battery.

Referring to FIG. 4 , when both the passenger compartment and the battery are required to be heated, the thermal management system can be in the third heating mode, the compressor 1 is turned off, and the refrigerant system is turned off.

The first pump 10 and the second pump 9 are turned on, the third pump 11 is turned off, the first heating device 15 is turned off, the second heating device 12 is turned on, the coolant system is in working state, the second port 42 is connected to the first port 41 and the fourth The port 44 communicates, and the third interface 53 communicates with the fourth interface 54 . The first pump 10, the battery heat exchange assembly 14, the first heating device 15, the second heat exchange part 33, and the first pump 10 are sequentially connected to form a circuit, and the second pump 9, the fourth heat exchange part 22, and the second heating device 12. The seventh heat exchanger 103 and the second pump 9 are sequentially connected to form a circuit, and the second pump 9, the fourth heat exchange part 22, the second heating device 12, the fifth heat exchange part 32, and the second pump 9 are sequentially Connected into a circuit, the coolant circulates, the seventh heat exchanger 103 releases heat to heat the surrounding air, and the coolant in the fifth heat exchange part 32 releases heat to the coolant in the second heat exchange part 33, realizing the passenger compartment and battery heating. According to the heating requirement of the battery, the first heating device 15 can be selectively turned on.

The third heating mode is suitable for working conditions where the ambient temperature of the atmosphere is low and the temperature of the battery itself is low. If the temperature of the battery is too low, the performance will be affected. Therefore, the second heating device 12 can be used to heat the coolant first, so as to raise the temperature of the battery to an appropriate level. range, and then switch to other heating modes.

Referring to FIG. 5 , when both the passenger compartment and the battery have heating demands, the thermal management system can also be in the fourth heating mode. The compressor 1 is turned on, the refrigerant system is in the working state, the compressor 1, the third heat exchange part 21, the third flow regulating device 6, the fourth valve 19, the second valve 17, and the compressor 1 are connected in sequence to form a circuit. The first valve 16 is in the cut-off state, the second valve 17 is in the conduction state, the first valve port of the fourth valve 19 communicates with the third valve port, the first flow regulating device 8 and the second flow regulating device 7 are in the cut-off state, and the first valve port of the fourth valve 19 is in the cut-off state. The third flow regulating device 6 is in a throttling state, and the refrigerant in the third heat exchange part 21 releases heat to the coolant in the fourth heat exchange part 22 . The compressor 1 compresses the refrigerant into a high-temperature and high-pressure refrigerant, and the high-temperature and high-pressure refrigerant releases heat into the cooling liquid in the fifth heat exchanger 2, and the cooling liquid releases heat through the seventh heat exchanger 103 to heat the surrounding air, realizing The passenger compartment is heated, and the refrigerant flows back to the compressor 1 after being throttled by the third flow regulating device 6 , and thus circulates.

The first pump 10 and the second pump 9 are turned on, the third pump 11 is turned off, the first heating device 15 is turned on, the second heating device 12 is turned off, the coolant system is in working state, the second port 42 communicates with the first port 41, and the second port 42 communicates with the first port 41. The third interface 53 communicates with the fourth interface 54 . The first pump 10, the battery heat exchange assembly 14, the first heating device 15, the second heat exchange part 33, and the first pump 10 are sequentially connected to form a circuit, and the second pump 9, the fourth heat exchange part 22, and the second heating device 12. The seventh heat exchanger 103 and the second pump 9 are connected in sequence to form a circuit, and the cooling fluid circulates to realize heating of the passenger compartment and the battery. According to the heating demand of the passenger compartment, the second heating device 12 can be selectively turned on.

In the fourth heating mode, the refrigerant throttled by the third flow regulating device 6 does not exchange heat with other fluids, and directly flows back to the compressor 1, and the outlet of the third flow regulating device 6 and the inlet of the compressor 1 No heat exchanger is provided between them for heat absorption, only a valve device or a gas-liquid separator 20 that does not participate in heat exchange is provided, no heat is absorbed from the atmosphere through the second heat exchanger 101, and no other heat exchanger is provided from the atmosphere. Coolant or atmosphere absorbs heat. In the refrigerant system, the compressor 1 works to increase the temperature of the refrigerant, and the compressor 1 is used as a heating device. The pressure and temperature of the refrigerant after throttling by the third flow regulating device 6 are lowered. By adjusting the opening degree of the third flow regulating device 6, the intake air temperature of the compressor 1 is adjusted, and the intake air temperature of the compressor 1 is controllable. The discharge temperature of the compressor 1 is controllable and relatively stable, and the heating effect is relatively stable.

In the first heating mode, the second heating mode, the third heating mode and the fourth heating mode, when the motor needs to dissipate heat, the third port 43 communicates with the fifth port 45, and the sixth port 46 communicates with the fifth port 45. The seven ports 47 are connected, the first interface 51 is connected with the second interface 52, the third pump 11 is turned on, the third pump 11, the motor heat exchange assembly 13, the sixth heat exchanger 104, and the third pump 11 are connected in sequence to form a circuit, The heat of the motor is released into the atmosphere through the sixth heat exchanger 104, so as to realize heat dissipation of the motor.

Referring to FIG. 6 , when both the passenger compartment and the battery have heating demands, the thermal management system can also be in the fifth heating mode. The compressor 1 is turned on, the refrigerant system is in the working state, the compressor 1, the third heat exchange part 21, the third flow regulating device 6, the fourth valve 19, the second heat exchanger 101, the second valve 17, the The circuit is connected sequentially, the first valve 16 is in the cut-off state, the second valve 17 is in the conduction state, the first valve port of the fourth valve 19 communicates with the second valve port, the first flow regulating device 8 and the second flow regulating device 8 The device 7 is in the cut-off state, the third flow regulating device 6 is in the throttling state, the refrigerant in the third heat exchange part 21 releases heat to the cooling liquid in the fourth heat exchange part 22, and the second heat exchanger 101 receives from the atmospheric environment Medium endothermic.

The first pump 10 and the second pump 9 are turned on, the third pump 11 is turned off, the first heating device 15 and the second heating device 12 are turned off, the coolant system is in working condition, the second port 42 is connected to the first port 41 and the fourth port 44 , the fifth port 45 communicates with the sixth port 46 , the first port 51 communicates with the fourth port 54 , and the second port 52 communicates with the third port 53 . The first pump 10, the battery heat exchange assembly 14, the motor heat exchange assembly 13, the first heating device 15, the second heat exchange part 33, and the first pump 10 are sequentially connected to form a circuit, and the second pump 9 and the fourth heat exchange part 22. The second heating device 12, the seventh heat exchanger 103, and the second pump 9 are sequentially connected to form a circuit, the second pump 9, the fourth heat exchange part 22, the second heating device 12, the fifth heat exchange part 32, The second pump 9 is connected in sequence to form a circuit, and the coolant circulates, thereby realizing the heating of the passenger compartment and the battery.

In the fifth heating mode, the refrigerant system is used to heat the passenger compartment and the battery, while the heat of the motor is used to heat the battery, rationally utilizing the heat source in the system, and improving energy efficiency. According to the heating demand of the passenger compartment, the first heating device 15 and the second heating device 12 can be selectively turned on.

In some other embodiments, in the fifth heating mode, the fourth port 44 can be disconnected from the second port 42 , the refrigerant system is used to heat the passenger compartment, and the heat of the motor is used to heat the battery.

Referring to FIG. 7 , when both the passenger compartment and the battery have heating requirements, and the motor needs to dissipate heat, the thermal management system is in the sixth heating mode. The compressor 1 is turned on, the refrigerant system is in the working state, the compressor 1, the third heat exchange part 21, the third flow regulating device 6, the fourth valve 19, the second heat exchanger 101, the second valve 17, the The circuit is connected sequentially, the first valve 16 is in the cut-off state, the second valve 17 is in the conduction state, the first valve port of the fourth valve 19 communicates with the second valve port, the first flow regulating device 8 and the second flow regulating device 8 The device 7 is in the cut-off state, the third flow regulating device 6 is in the throttling state, the refrigerant in the third heat exchange part 21 releases heat to the cooling liquid in the fourth heat exchange part 22, and the second heat exchanger 101 receives from the atmospheric environment Medium endothermic.

The first pump 10, the second pump 9 and the third pump 11 are turned on, the first heating device 15 and the second heating device 12 are turned off, the coolant system is in working condition, the second port 42 is connected to the first port 41 and the fourth port 44 The third port 43 communicates with the fifth port 45 , the sixth port 46 communicates with the seventh port 47 , the first port 51 communicates with the second port 52 , and the third port 53 communicates with the fourth port 54 . The first pump 10, the battery heat exchange assembly 14, the first heating device 15, the second heat exchange part 33, and the first pump 10 are sequentially connected to form a circuit, and the second pump 9, the fourth heat exchange part 22, and the second heating device 12. The seventh heat exchanger 103 and the second pump 9 are sequentially connected to form a circuit, and the second pump 9, the fourth heat exchange part 22, the second heating device 12, the fifth heat exchange part 32, and the second pump 9 are sequentially Connected into a circuit, the third pump 11, the motor heat exchange assembly 13, the sixth heat exchanger 104, and the third pump 11 are connected in sequence to form a circuit, and the coolant circulates to realize heating of the passenger compartment, heating of the battery and heat dissipation of the motor . According to the heating requirements of the passenger compartment and the battery, the first heating device 15 and the second heating device 12 can be selectively turned on.

In some other embodiments, in the sixth heating mode, the second port 42 can be disconnected from the fourth port 44 , the first heating device 15 can be turned on, and the first heating device 15 can be used to heat the coolant to heat the battery.

Referring to Fig. 8, when the passenger compartment has a heating demand and both the battery and the motor have waste heat, the thermal management system is in the waste heat recovery mode. The compressor 1 is turned on, the refrigerant system is in the working state, the compressor 1, the third heat exchange part 21, the first valve 16, the first flow regulating device 8, the first heat exchange part 31, and the compressor 1 are connected in sequence to form a circuit , the first valve 16 is in the conduction state, the second valve 17 is in the cut-off state, the first flow regulating device 8 is in the throttling state, the second flow regulating device 7 and the third flow regulating device 6 are in the cut-off state, and the third heat exchange The refrigerant in the part 21 releases heat to the cooling liquid in the fourth heat exchanging part 22 , and the refrigerant in the first heat exchanging part 31 absorbs heat from the cooling liquid in the second heat exchanging part 33 .

The first pump 10 and the second pump 9 are turned on, the third pump 11 is turned off, the first heating device 15 and the second heating device 12 are turned off, the coolant system is in a working state, the second port 42 communicates with the first port 41, and the sixth The port 46 communicates with the fifth port 45 , the first port 51 communicates with the fourth port 54 , and the second port 52 communicates with the third port 53 . The first pump 10, the battery heat exchange assembly 14, the motor heat exchange assembly 13, the first heating device 15, the second heat exchange part 33, and the first pump 10 are sequentially connected to form a circuit, and the second pump 9 and the fourth heat exchange part 22. The second heating device 12, the seventh heat exchanger 103, and the second pump 9 are sequentially connected to form a circuit, and the cooling fluid circulates, thereby realizing heating of the passenger compartment, recovery of waste heat from the battery, and recovery of waste heat from the motor. The waste heat of the motor and battery is recovered and used for heating the passenger compartment, realizing the recovery and utilization of waste heat and improving the energy efficiency of the system. According to the heating demand of the passenger compartment, the first heating device 15 and the second heating device 12 can be selectively turned on.

Referring to Fig. 9, in the heating mode, the second heat exchanger 101 is used to absorb heat from the atmospheric environment, which is conducive to improving energy efficiency, but when the ambient temperature is low and the humidity is high, the second heat exchanger 101 is prone to frost , at this moment, the thermal management system needs to run the defrosting mode, which is used to prevent the second heat exchanger 101 from frosting or to defrost the second heat exchanger 101 . The compressor 1 is turned on, the refrigerant system is in the working state, the compressor 1, the third heat exchange part 21, the third flow regulating device 6, the fourth valve 19, the second heat exchanger 101, the third valve 18, the first flow The regulating device 8, the first heat exchange part 31, and the compressor 1 are connected in sequence to form a circuit, the first valve 16 and the second valve 17 are in the cut-off state, the first valve port of the fourth valve 19 communicates with the second valve port, and the first valve port of the fourth valve 19 communicates with the second valve port. The first flow regulating device 8 is in the throttling state, the second flow regulating device 7 is in the cut-off state, the third flow regulating device 6 is in the conducting state, the refrigerant in the third heat exchange part 21 flows to the fourth heat exchange part 22 The cooling liquid releases heat, the second heat exchanger 101 releases heat, and the refrigerant in the first heat exchange part 31 absorbs heat from the cooling liquid in the second heat exchange part 33 . The coolant system in the defrosting mode is the same as that in the waste heat recovery mode, and you can refer to the related descriptions, so I won’t repeat them here.

As shown in Figures 10 to 12, when the ambient temperature is high or the battery temperature is high, according to whether the passenger compartment and the battery have cooling requirements, the first flow regulating device 8, the second flow regulating device 7, the second flow regulating device 8, and the second flow regulating device 7 can be adjusted. The states of the three flow regulating devices 6 , the first flow direction switching device 4 , the second flow direction switching device 5 , and multiple valve devices realize the functions of cooling only the passenger compartment, cooling only the battery, or simultaneously cooling the passenger compartment and the battery.

Referring to FIG. 10 , when only the passenger compartment has a cooling demand, the thermal management system is in the first cooling mode. The compressor 1 is turned on, the refrigerant system is in the working state, the compressor 1, the third heat exchange part 21, the third flow regulating device 6, the fourth valve 19, the second heat exchanger 101, the third valve 18, the second flow The regulating device 7, the fourth heat exchanger 102, and the compressor 1 are connected in sequence to form a circuit, the first valve 16 and the second valve 17 are in the cut-off state, the first valve port of the fourth valve 19 is connected with the second valve port, and the first valve port of the fourth valve 19 is connected to the second valve port. The first flow regulating device 8 is in the cut-off state, the second flow regulating device 7 is in the throttling state, the third flow regulating device 6 is in the conducting state, the second heat exchanger 101 releases heat to the atmosphere, and the fourth heat exchanger 102 absorbs heat. The temperature of the surrounding air is lowered, and the cold air is blown into the cabin, thereby cooling the passenger compartment.

The first pump 10 and the second pump 9 are turned off, the third pump 11 is turned on, the first heating device 15 and the second heating device 12 are turned off, the coolant system is in the working state, the third port 43 communicates with the fifth port 45, and the sixth The port 46 communicates with the seventh port 47, the first port 51 communicates with the second port 52, the third pump 11, the motor heat exchange assembly 13, the sixth heat exchanger 104, and the third pump 11 are connected in sequence to form a circuit, and the sixth The heat exchanger 104 releases heat to the atmosphere, and the cooled coolant circulates to realize heat dissipation of the motor.

Referring to FIG. 11 , when only the battery has a cooling demand, the thermal management system is in the second cooling mode. The compressor 1 is turned on, the refrigerant system is in the working state, the compressor 1, the third heat exchange part 21, the third flow regulating device 6, the fourth valve 19, the second heat exchanger 101, the third valve 18, the first flow The regulating device 8, the first heat exchange part 31, and the compressor 1 are connected in sequence to form a circuit, the first valve 16 and the second valve 17 are in the cut-off state, the first valve port of the fourth valve 19 communicates with the second valve port, and the first valve port of the fourth valve 19 communicates with the second valve port. The first flow regulating device 8 is in the throttling state, the second flow regulating device 7 is in the cut-off state, the third flow regulating device 6 is in the conducting state, the second heat exchanger 101 releases heat to the atmosphere, and the first heat exchange part 31 The refrigerant absorbs heat from the cooling liquid in the second heat exchange part 33 .

The first pump 10 and the third pump 11 are turned on, the second pump 9 is turned off, the first heating device 15 and the second heating device 12 are turned off, the coolant system is in working state, the third port 43 communicates with the fifth port 45, and the sixth The port 46 communicates with the seventh port 47, the first port 51 communicates with the second port 52, the third port 53 communicates with the fourth port 54, the first pump 10, the battery heat exchange assembly 14, the first heating device 15, the second The heat exchange part 33 and the first pump 10 are connected in sequence to form a circuit, and the third pump 11 , the motor heat exchange assembly 13 , the sixth heat exchanger 104 , and the third pump 11 are connected in sequence to form a circuit. The sixth heat exchanger 104 releases heat to the atmosphere, and the cooled cooling liquid circulates to realize heat dissipation of the motor; the temperature of the cooling liquid is lowered through the first heat exchanger 3, and the cooling liquid circulates to realize battery cooling.

Referring to FIG. 12 , when both the passenger compartment and the battery have cooling demands, the thermal management system is in the third cooling mode. The compressor 1 is turned on, the refrigerant system is in the working state, the compressor 1, the third heat exchange part 21, the third flow regulating device 6, the fourth valve 19, the second heat exchanger 101, the third valve 18, the second flow The regulating device 7, the fourth heat exchanger 102, and the compressor 1 are connected in sequence to form a circuit, the compressor 1, the third heat exchange part 21, the third flow regulating device 6, the fourth valve 19, the second heat exchanger 101, The third valve 18, the first flow regulating device 8, the first heat exchange part 31, and the compressor 1 are sequentially connected to form a circuit, the first valve 16 and the second valve 17 are in the cut-off state, and the first valve port of the fourth valve 19 In communication with the second valve port, the first flow regulating device 8 and the second flow regulating device 7 are in a throttling state, and the third flow regulating device 6 is in a conduction state. The second heat exchanger 101 releases heat to the atmosphere, the refrigerant in the first heat exchange part 31 absorbs heat from the coolant in the second heat exchange part 33, and the cooled coolant circulates, thereby realizing battery cooling ; The fourth heat exchanger 102 absorbs heat, so that the temperature of the surrounding air is reduced, and the cold air is blown into the compartment, thereby realizing cooling of the passenger compartment. The coolant system in the third cooling mode is the same as that in the second cooling mode, and reference may be made to related descriptions, and details are not repeated here.

Referring to FIG. 13 , when the passenger compartment has a heating demand, and both the battery and the electric motor have a cooling demand, the thermal management system is in the first hybrid heat exchange mode. The compressor 1 is turned on, the refrigerant system is in the working state, the compressor 1, the third heat exchange part 21, the first valve 16, the first flow regulating device 8, the first heat exchange part 31, and the compressor 1 are connected in sequence to form a circuit , the first valve 16 is in the conduction state, the second valve 17 is in the cut-off state, the first flow regulating device 8 is in the throttling state, and the second flow regulating device 7 and the third flow regulating device 6 are in the cut-off state. The refrigerant in the third heat exchange part 21 releases heat to the coolant in the fourth heat exchange part 22, and the coolant after the temperature rises circulates, thereby realizing the heating of the passenger compartment and cooling in the first heat exchange part 31. The agent absorbs heat from the cooling liquid in the second heat exchanging part 33 , and the cooled cooling liquid circulates to realize cooling of the battery.

The first pump 10, the second pump 9 and the third pump 11 are turned on, the first heating device 15 and the second heating device 12 are turned off, the coolant system is in working condition, the second port 42 communicates with the first port 41, and the third port 43 communicates with the fifth port 45 , the sixth port 46 communicates with the seventh port 47 , the first port 51 communicates with the second port 52 , and the third port 53 communicates with the fourth port 54 . The first pump 10, the battery heat exchange assembly 14, the first heating device 15, the second heat exchange part 33, and the first pump 10 are sequentially connected to form a circuit, and the second pump 9, the fourth heat exchange part 22, and the second heating device 12. The seventh heat exchanger 103 and the second pump 9 are sequentially connected to form a loop, the third pump 11, the motor heat exchange assembly 13, the sixth heat exchanger 104 and the third pump 11 are sequentially connected to form a loop, and the coolant circulates flow to heat the passenger compartment, cool the battery and dissipate heat from the electric motor.

Referring to FIG. 14 , when the passenger compartment requires heating and dehumidification, and both the battery and the motor have cooling requirements, the thermal management system is in the second hybrid heat exchange mode. The compressor 1 is turned on, the refrigerant system is in the working state, the compressor 1, the third heat exchange part 21, the first valve 16, the first flow regulating device 8, the first heat exchange part 31, and the compressor 1 are connected in sequence to form a circuit , the compressor 1, the third heat exchange part 21, the first valve 16, the second flow regulating device 7, the fourth heat exchanger 102, and the compressor 1 are sequentially connected to form a circuit, the first valve 16 is in a conduction state, and the second The second valve 17 is in the cut-off state, the first flow regulating device 8 and the second flow regulating device 7 are in the throttling state, and the third flow regulating device 6 is in the cut-off state. The fourth heat exchanger 102 absorbs heat, the air in the passenger compartment first flows through the fourth heat exchanger 102, the moisture in the air condenses into water drops, and the dehumidified air then flows to the seventh heat exchanger 103 to be heated; The refrigerant in the third heat exchange part 21 releases heat to the coolant in the fourth heat exchange part 22, and the coolant after the temperature rises circulates, and the seventh heat exchanger 103 releases heat to heat the surrounding dehumidified air, which is The dried hot air is blown into the passenger compartment, thereby realizing heating and dehumidification of the passenger compartment; the refrigerant in the first heat exchange part 31 absorbs heat from the coolant in the second heat exchange part 33, and the cooled coolant circulates , so as to achieve battery cooling. The coolant system in the second mixed heat exchange mode is the same as the coolant system in the first mixed heat exchange mode, and reference may be made to related descriptions, and details are not repeated here.

In some other embodiments, in the waste heat recovery mode, the first hybrid heat exchange mode and the second hybrid heat exchange mode, the refrigerant system can also be in the conduction state of the third flow regulating device 6, the first valve 16 in the cut-off state, and the second The first valve port of the four valve 19 communicates with the third valve port, the compressor 1, the third heat exchange part 21, the third flow regulating device 6, the fourth valve 19, the third valve 18, the first flow regulating device 8, The first heat exchange part 31 and the compressor 1 are connected in sequence to form a circuit.

In the first cooling mode, the second cooling mode, the third cooling mode, the first hybrid heat exchange mode and the second hybrid heat exchange mode, when the motor has no heat dissipation requirement, the third pump 11 can be turned off.

As shown in Figure 15 to Figure 16, when the battery generates a lot of heat, such as fast charging or high load operation, the high temperature will affect the performance of the battery, and the battery needs to cool down to an appropriate temperature range relatively quickly, so that the battery has higher performance.

Referring to FIG. 15 , when the battery has a rapid heat dissipation requirement, the thermal management system is in the first battery heat dissipation mode. The compressor 1 is turned on, the refrigerant system is in the working state, the compressor 1, the third heat exchange part 21, the third flow regulating device 6, the fourth valve 19, the second heat exchanger 101, the third valve 18, the first flow The regulating device 8, the first heat exchange part 31, and the compressor 1 are connected in sequence to form a circuit, the first valve 16 and the second valve 17 are in the cut-off state, the first valve port of the fourth valve 19 is connected to the second valve port, and the first valve port is connected to the second valve port. The first flow regulating device 8 is in the throttling state, the second flow regulating device 7 is in the cut-off state, the third flow regulating device 6 is in the conducting state, the refrigerant in the third heat exchange part 21 flows to the fourth heat exchange part 22 The coolant releases heat, the refrigerant in the first heat exchange part 31 absorbs heat from the coolant in the second heat exchange part 33 , and the second heat exchanger 101 releases heat to the atmosphere.

The first pump 10, the second pump 9, and the third pump 11 are turned on, the first heating device 15 and the second heating device 12 are turned off, the coolant system is in a working state, the first port 41 communicates with the third port 43, and the second port 42 communicates with the seventh port 47 , and the third port 53 communicates with the fifth port 55 . The first pump 10, the battery heat exchange assembly 14, the third heat exchanger 105, the first heating device 15, the second heat exchange part 33, and the first pump 10 are sequentially connected to form a first circuit, in which the battery exchange The coolant flowing out of the thermal component 14 first flows through the third heat exchanger 105 to exchange heat with the atmospheric environment, the temperature of the coolant decreases, and then flows through the second heat exchange part 33 to exchange heat with the refrigerant, and the temperature of the coolant further decreases. After cooling down twice, the temperature of the cooling liquid is relatively low, and flows into the battery heat exchange assembly 14 again to exchange heat with the battery, so as to realize rapid heat dissipation of the battery. The second pump 9, the fourth heat exchange unit 22, the second heating device 12, the seventh heat exchanger 103, the sixth heat exchanger 104, the third pump 11, and the second pump 9 are sequentially connected to form a second circuit, through The circulating flow of the coolant in the second loop brings heat to the sixth heat exchanger 104 and releases it to the atmosphere.

In the refrigerant circuit, the refrigerant flowing out of the compressor 1 first flows through the fifth heat exchanger 2 to exchange heat with the coolant, and releases heat to the atmosphere through the sixth heat exchanger 104 in the second circuit. The temperature of the refrigerant decreases, and then flows through the second heat exchanger 101 to exchange heat with the atmospheric environment, and the temperature of the refrigerant is further reduced. The final refrigerant temperature can be lower, and when the refrigerant flows through the first heat exchanger 3 to exchange heat with the cooling liquid, it can absorb more heat in the cooling liquid, making the temperature of the cooling liquid lower, thereby improving the heat dissipation of the battery Effect.

Referring to FIG. 16 , when the heat generated by the battery is large and the passenger compartment has a cooling demand, the thermal management system is in the second battery cooling mode. The compressor 1 is turned on, the refrigerant system is in the working state, the compressor 1, the third heat exchange part 21, the third flow regulating device 6, the fourth valve 19, the second heat exchanger 101, the third valve 18, the first flow The regulating device 8, the first heat exchange part 31, and the compressor 1 are connected in sequence to form a circuit, the compressor 1, the third heat exchange part 21, the third flow regulating device 6, the fourth valve 19, the second heat exchanger 101, The third valve 18, the second flow regulating device 7, the fourth heat exchanger 102, and the compressor 1 are connected in sequence to form a circuit. The first valve 16 and the second valve 17 are in a cut-off state, the first valve port of the fourth valve 19 communicates with the second valve port, the first flow regulating device 8 and the second flow regulating device 7 are in a throttling state, and the third flow rate The regulating device 6 is in the conduction state, the refrigerant in the third heat exchange part 21 releases heat to the coolant in the fourth heat exchange part 22 , the refrigerant in the first heat exchange part 31 transfers heat from the second heat exchange part 33 The coolant absorbs heat, the fourth heat exchanger 102 absorbs heat to reduce the temperature of the passenger compartment, and the second heat exchanger 101 releases heat to the atmosphere.

The coolant system in the second battery heat dissipation mode is the same as the coolant system in the first battery heat dissipation mode, and reference may be made to related descriptions, which will not be repeated here. In the second battery heat dissipation mode, the temperature of the refrigerant before throttling is lowered twice, so that the temperature of the refrigerant after throttling is lower, so that the cooling effect of the passenger compartment and the cooling effect of the battery are also better. The temperature of the coolant in the first circuit is lowered twice, the temperature of the coolant is lower, and the cooling effect of the battery is better.

In the air conditioning box 100, a damper (not shown) is provided between the fourth heat exchanger 102 and the seventh heat exchanger 103. In the first battery heat dissipation mode and the second battery heat dissipation mode, the damper is closed so that the air Does not flow through the seventh heat exchanger 103. When the passenger compartment needs to be heated, the damper is opened, and the seventh heat exchanger 103 is used to heat the air. In some other embodiments, a branch may be set to bypass the seventh heat exchanger 103 to prevent the high temperature cooling liquid from flowing through the air conditioning box 100 .

In some other embodiments, in the first battery heat dissipation mode and the first battery heat dissipation mode, the second pump 9 and the third pump 11 can be turned off according to the heat dissipation requirements of the battery, and no heat exchange occurs at the fifth heat exchanger 2 . The refrigerant system only releases heat through the second heat exchanger 101 .

In some other embodiments, in the first battery heat dissipation mode and the first battery heat dissipation mode, according to the heat dissipation requirements of the battery, the fourth valve 19 can be switched so that the first valve port communicates with the third valve port, bypassing the second valve port. The heat exchanger 101 and the second heat exchanger 101 do not exchange heat, and the refrigerant system only releases heat through the fifth heat exchanger 2 .

In some other embodiments, in the first battery heat dissipation mode and the first battery heat dissipation mode, when the motor needs to dissipate heat, the second port 42 can be communicated with the fifth port 45, the sixth port 46 can be communicated with the seventh port 47, The second pump 9, the fourth heat exchange unit 22, the second heating device 12, the seventh heat exchanger 103, the sixth heat exchanger 104, the third pump 11, the motor heat exchange assembly 13, and the second pump 9 are connected in sequence into the second circuit.

In some other embodiments, the second heat exchange part 33 can also be connected in series between the outlet of the battery heat exchange assembly 14 and the inlet of the third heat exchanger 105, and the cooling water flowing out of the battery heat exchange assembly 14 in the first circuit The liquid first flows through the second heat exchange part 33 to exchange heat with the refrigerant, and the temperature of the cooling liquid decreases, and then flows through the third heat exchanger 105 to exchange heat with the atmospheric environment, and the temperature of the cooling liquid further decreases. The cooling liquid has a lower temperature and flows into the battery heat exchange assembly 14 again to exchange heat with the battery to realize rapid heat dissipation of the battery.

As shown in Figure 17 to Figure 19, when the motor generates a lot of heat, such as climbing conditions, the high temperature affects the performance of the motor and poses a safety hazard. The motor needs to be cooled to a suitable temperature range relatively quickly.

Referring to FIG. 17 , when the motor has a demand for rapid heat dissipation, the thermal management system is in the first motor heat dissipation mode. The compressor 1 is turned on and the refrigerant system is in working condition. The refrigerant system in the first motor heat dissipation mode is the same as that in the first battery heat dissipation mode. For the cooling effect of the coolant, reference may be made to related descriptions, which will not be repeated here.

The first pump 10 is turned on, the second pump 9 and the third pump 11 are turned off, the first heating device 15 and the second heating device 12 are turned off, the coolant system is in working state, the sixth port 46 communicates with the fifth port 45, the first The interface 51 communicates with the fifth interface 55 , and the second interface 52 communicates with the third interface 53 . The first pump 10 , the battery heat exchange assembly 14 , the motor heat exchange assembly 13 , the third heat exchanger 105 , the first heating device 15 , the second heat exchange part 33 , and the first pump 10 are connected in sequence to form a circuit. The coolant flowing out from the motor heat exchange assembly 13 first flows through the third heat exchanger 105 to exchange heat with the atmospheric environment, the temperature of the coolant decreases, and then flows through the second heat exchange part 33 to exchange heat with the refrigerant, and the temperature of the coolant is To further reduce the temperature, the coolant after twice cooling flows through the battery heat exchange assembly 14, and then flows into the motor heat exchange assembly 13 to exchange heat with the motor, so as to realize rapid heat dissipation of the motor.

Referring to FIG. 18 , when the motor has a need for rapid heat dissipation, the thermal management system can also be in the second motor heat dissipation mode. Compressor 1 is turned on, and the refrigerant system is in working condition. The refrigerant system in the second motor heat dissipation mode is the same as that in the first battery heat dissipation mode. The two cooling of the refrigerant can increase the temperature of the first heat exchanger by 3 places. For the cooling effect of the coolant, reference may be made to related descriptions, which will not be repeated here.

The first pump 10 and the third pump 11 are turned on, the second pump 9 is turned off, the first heating device 15 and the second heating device 12 are turned off, the coolant system is in working state, the third port 43 communicates with the fifth port 45, and the sixth The port 46 communicates with the seventh port 47 , the first port 51 communicates with the fourth port 54 , and the second port 52 communicates with the third port 53 . The first pump 10, the battery heat exchange assembly 14, the motor heat exchange assembly 13, the sixth heat exchanger 104, the third pump 11, the first heating device 15, the second heat exchange part 33, and the first pump 10 are sequentially connected to form circuit. The coolant flowing out from the motor heat exchange assembly 13 first flows through the sixth heat exchanger 104 to exchange heat with the atmospheric environment, the temperature of the coolant decreases, and then flows through the second heat exchange part 33 to exchange heat with the refrigerant. To further reduce the temperature, the coolant after twice cooling flows through the battery heat exchange assembly 14, and then flows into the motor heat exchange assembly 13 to exchange heat with the motor, so as to realize rapid heat dissipation of the motor.

Referring to FIG. 19 , when the motor has a need for rapid heat dissipation, the thermal management system can also be in a third motor heat dissipation mode. Compressor 1 is turned on, and the refrigerant system is in working condition. The refrigerant system in the third motor heat dissipation mode is the same as that in the first battery heat dissipation mode. For the cooling effect of the coolant, reference may be made to related descriptions, which will not be repeated here.

The first pump 10 and the third pump 11 are turned on, the second pump 9 is turned off, the first heating device 15 and the second heating device 12 are turned off, the coolant system is in working state, the third port 43 communicates with the fifth port 45, and the sixth The port 46 communicates with the seventh port 47 , the first port 51 communicates with the fifth port 55 , and the second port 52 communicates with the third port 53 . The first pump 10, the battery heat exchange assembly 14, the motor heat exchange assembly 13, the sixth heat exchanger 104, the third pump 11, the third heat exchanger 105, the first heating device 15, the second heat exchange part 33, the sixth A pump 10 is connected in sequence to form a circuit. The cooling liquid flowing out from the motor heat exchange assembly 13 first flows through the sixth heat exchanger 104 to exchange heat with the atmospheric environment, and the temperature of the cooling liquid decreases, and then flows through the third heat exchanger 105 to exchange heat with the atmospheric environment again, and the temperature of the cooling liquid After cooling down again, and then flowing through the second heat exchange part 33 to exchange heat with the refrigerant, the temperature of the cooling liquid is further reduced. After cooling down three times, the cooling liquid flows through the battery heat exchange assembly 14, and then flows into the motor heat exchange assembly 13 and the motor heat exchange assembly 14 again. Heat exchange to realize rapid heat dissipation of the motor.

In some other embodiments, in the first motor heat dissipation mode, the second motor heat dissipation mode, and the third motor heat dissipation mode, a branch can be set to bypass the battery heat exchange assembly 14 to avoid damage to the battery caused by the lower temperature coolant .

In some other embodiments, in the first motor cooling mode, the second heat exchange part 33 can also be connected in series between the outlet of the motor heat exchange assembly 13 and the inlet of the third heat exchanger 105, after two cooling The coolant temperature of the coolant is low, and flows into the motor heat exchange assembly 13 to exchange heat with the motor again, so as to realize rapid heat dissipation of the motor. In the second motor cooling mode, the second heat exchanging part 33 can also be connected in series between the outlet of the motor heat exchanging assembly 13 and the inlet of the sixth heat exchanger 104, and the temperature of the coolant after two times of cooling is relatively low. Flow into the motor heat exchange assembly 13 again to exchange heat with the motor. In the third motor heat dissipation mode, the second heat exchange part 33 can also be connected in series between the outlet of the motor heat exchange assembly 13 and the inlet of the sixth heat exchanger 104, and the second heat exchange part 33 can also be connected in series with the sixth heat exchanger 104. Between the outlet of the sixth heat exchanger 104 and the inlet of the third heat exchanger 105 .

The "connection" between two parts in this application can be a direct connection or a pipeline connection. There can only be a pipeline between the two components, or there can be a pipeline in addition to the pipeline between the two components. valves or other components. Similarly, the "communication" between two components in this application may be direct communication, or communication through pipelines, and there may be only pipeline communication between the two components, or there may be an additional connection between the two components. There are valves or other components in communication.

The present application also provides a control method of the thermal management system. The control method in the present application is applied to the thermal management system of the above embodiment. The thermal management system also includes a control system, which can be used to control the working state and cooling of the refrigerant system. The working state of the liquid system is controlled.

Referring to Fig. 1, the control system includes a controller 200 and a plurality of sensors, the plurality of sensors can be used to obtain the first heat exchanger, the fifth heat exchanger, the second heat exchanger, the fourth heat exchanger, the seventh heat exchanger , the third heat exchanger, the sixth heat exchanger, the first heating device, the second heating device, the working information of the motor and the battery, optionally, the working information includes temperature. The controller 301 communicates with the compressor 1, the fan in the air conditioning box 100, the damper in the air conditioning box 100, the fan device at the air intake grille, multiple valve devices, multiple fluid drive devices, multiple flow direction regulating devices and multiple Sensors and other components are electrically connected. The controller 200 can be used to obtain the working information obtained by the sensor. The controller 200 can be used to control the compressor 1, the fan in the air-conditioning box 100, the damper in the air-conditioning box 100, the fan device at the air intake grille, multiple valve devices, multiple fluid drive devices, and multiple flow direction adjustment devices. The working state is adjusted, and the adjustment of the working state includes at least one of opening components, closing components, speed adjustment, opening adjustment and power adjustment. The controller 200 can be used to implement the control method of the thermal management system.

Control methods for thermal management systems include:

Obtain the passenger's needs and the work information obtained by the sensor;

According to the needs of passengers and the working information obtained from the sensors, the controller 200 adjusts the working status of each component in the thermal management system, so that the thermal management system performs an appropriate air-conditioning operation mode, thereby realizing the control of the passenger cabin, motor and battery. thermal management.

The thermal management system also includes an interaction device, the controller 200 is electrically connected to the interaction device, and the controller 200 can obtain passengers' requirements through the interaction device, such as the target temperature or operating mode required by the passengers. Optionally, the interaction device may be a control panel of a car. Air conditioner operating modes include cooling mode, heating mode, hybrid heating mode, waste heat recovery mode, defrosting mode, battery cooling mode, and motor cooling mode. The connection state of the thermal management system under the above working conditions can refer to the previous description, and will not be repeated here.

The above description is only the preferred embodiment of the application, and does not limit the application in any form. Although the application has disclosed the above with the preferred embodiment, it is not used to limit the application. Anyone who is familiar with this professional technology Personnel, without departing from the scope of the technical solution of the present application, when the technical content disclosed above can be used to make some changes or modifications to equivalent embodiments with equivalent changes, but all the content that does not depart from the technical solution of the present application, according to the technical content of the present application Any simple modifications, equivalent changes and modifications made to the above embodiments by the technical essence of the application still fall within the scope of the technical solution of the application.

Claims (11)

1. A thermal management system, characterized in that it includes: a compressor, a second heat exchanger, a first flow regulating device, a first heat exchanger, a third heat exchanger, a battery heat exchange component, and a first pump, The third heat exchanger is used for heat exchange with the atmospheric environment, the first heat exchanger includes a first heat exchange part and a second heat exchange part, and the first heat exchange part and the second heat exchange part are different connected; The outlet of the compressor can communicate with the inlet of the second heat exchanger, the outlet of the second heat exchanger can communicate with the inlet of the first flow regulating device, and the outlet of the first flow regulating device Can communicate with the inlet of the first heat exchange part, and the outlet of the first heat exchange part can communicate with the inlet of the compressor; The heat management system has a first battery heat dissipation mode, and in the first battery heat dissipation mode, the compressor, the second heat exchanger, the first flow regulating device, and the first heat exchange part connected to form a circuit, the first flow regulating device is connected in series between the outlet of the second heat exchanger and the inlet of the first heat exchange part, the first flow regulating device is in a throttling state, the The first pump, the battery heat exchange assembly, the third heat exchanger, and the second heat exchange part are connected to form a circuit, the third heat exchanger releases heat to the atmosphere, and the first heat exchange part heat exchange with the second heat exchange unit. 2. A thermal management system according to claim 1, characterized in that the thermal management system further comprises a second flow regulating device and a fourth heat exchanger, the outlet of the second heat exchanger can be connected to the The inlet of the second flow regulating device is communicated, the outlet of the second flow regulating device can be communicated with the inlet of the fourth heat exchanger, and the outlet of the fourth heat exchanger can be communicated with the inlet of the compressor ; The thermal management system has a second battery heat dissipation mode, and in the second battery heat dissipation mode, the compressor, the second heat exchanger, the first flow regulating device, and the first heat exchange part connected to form a circuit, the first flow regulating device is connected in series between the outlet of the second heat exchanger and the inlet of the first heat exchange part, the compressor, the second heat exchanger, the The second flow regulating device and the fourth heat exchanger are connected to form a loop, and the second flow regulating device is connected in series between the outlet of the second heat exchanger and the inlet of the fourth heat exchanger, The first flow regulating device and the second flow regulating device are in a throttling state, and the first pump, the battery heat exchange assembly, the third heat exchanger, and the second heat exchange part are connected to form A circuit, the third heat exchanger releases heat to the atmosphere, and the first heat exchange part exchanges heat with the second heat exchange part. 3. The thermal management system according to claim 2, wherein the outlet of the battery heat exchange assembly can communicate with the inlet of the third heat exchanger, and the outlet of the third heat exchanger can communicate with the inlet of the second heat exchange part, and the outlet of the second heat exchange part can communicate with the inlet of the battery heat exchange assembly; In the first battery heat dissipation mode and the second battery heat dissipation mode, the third heat exchanger is connected in series between the outlet of the battery heat exchange assembly and the inlet of the second heat exchange part, so The second heat exchange part is connected in series between the outlet of the third heat exchanger and the inlet of the battery heat exchange assembly. 4. A thermal management system according to claim 2, characterized in that, the thermal management system further comprises a second pump, a fifth heat exchanger and a sixth heat exchanger, the fifth heat exchanger comprising The third heat exchange part and the fourth heat exchange part, the third heat exchange part is not in communication with the fourth heat exchange part, the second heat exchanger and the sixth heat exchanger are respectively used to communicate with the atmosphere Environmental heat exchange; The outlet of the compressor can communicate with the inlet of the third heat exchange part, the outlet of the third heat exchange part can communicate with the inlet of the second heat exchanger; the outlet of the fourth heat exchange part able to communicate with the inlet of the sixth heat exchanger; In the first battery heat dissipation mode or the second battery heat dissipation mode, the third heat exchange part is connected in series between the outlet of the compressor and the inlet of the second heat exchanger, and the first The second pump, the fourth heat exchange part and the sixth heat exchanger are connected to form a circuit, and the third heat exchange part exchanges heat with the fourth heat exchange part. 5. A thermal management system according to claim 4, characterized in that the thermal management system further comprises a motor heat exchange component; In the first battery heat dissipation mode or the second battery heat dissipation mode, the second pump, the fourth heat exchange part, the motor heat exchange assembly, and the sixth heat exchanger are connected to form a circuit. 6. A thermal management system according to claim 1, characterized in that the thermal management system further comprises a motor heat exchange component; The thermal management system has a first motor heat dissipation mode, and in the first motor heat dissipation mode, the compressor, the second heat exchanger, the first flow regulating device, and the first heat exchange part connected to form a circuit, the first flow regulating device is connected in series between the outlet of the second heat exchanger and the inlet of the first heat exchange part, the first flow regulating device is in a throttling state, the The first pump, the motor heat exchange assembly, the third heat exchanger and the second heat exchange part are connected to form a circuit, and the third heat exchanger is connected in series between the outlet of the motor heat exchange assembly and the Between the inlet of the second heat exchange part, the second heat exchange part is connected in series between the outlet of the third heat exchanger and the inlet of the motor heat exchange assembly, the first heat exchange part and The second heat exchange part performs heat exchange. 7. A thermal management system according to claim 1, characterized in that, the thermal management system further comprises a motor heat exchange assembly and a sixth heat exchanger, the sixth heat exchanger is used for exchanging heat with the atmospheric environment ; The thermal management system has a second motor heat dissipation mode, and in the second motor heat dissipation mode, the compressor, the second heat exchanger, the first flow regulating device, and the first heat exchange part connected to form a circuit, the first flow regulating device is connected in series between the outlet of the second heat exchanger and the inlet of the first heat exchange part, the first flow regulating device is in a throttling state, the The first pump, the motor heat exchange assembly, the sixth heat exchanger, and the second heat exchange part are connected to form a circuit, and the sixth heat exchanger is connected in series to the outlet of the motor heat exchange assembly and the Between the inlet of the second heat exchange part, the second heat exchange part is connected in series between the outlet of the sixth heat exchanger and the inlet of the motor heat exchange assembly, the first heat exchange part and The second heat exchange part performs heat exchange. 8. A thermal management system according to claim 1, characterized in that the thermal management system further comprises a motor heat exchange assembly and a sixth heat exchanger, the sixth heat exchanger is used for heat exchange with the atmospheric environment ; The thermal management system has a third motor heat dissipation mode, and in the third motor heat dissipation mode, the compressor, the second heat exchanger, the first flow regulating device, and the first heat exchange part connected to form a circuit, the first flow regulating device is connected in series between the outlet of the second heat exchanger and the inlet of the first heat exchange part, the first flow regulating device is in a throttling state, the The first pump, the motor heat exchange assembly, the third heat exchanger, the sixth heat exchanger, and the second heat exchange part are connected to form a circuit, and the sixth heat exchanger is connected in series to the Between the outlet of the motor heat exchange assembly and the inlet of the third heat exchanger, the third heat exchanger is connected in series between the outlet of the sixth heat exchanger and the inlet of the second heat exchange part , the second heat exchange part is connected in series between the outlet of the third heat exchanger and the inlet of the motor heat exchange assembly, and the first heat exchange part performs heat exchange with the second heat exchange part . 9. A thermal management system according to any one of claims 6 to 8, wherein the battery heat exchange component is connected in series with the outlet of the second heat exchange part and the motor heat exchange component. between the entrances. 10. A thermal management system according to claim 6, characterized in that, the thermal management system further comprises a second pump, a fifth heat exchanger, a seventh heat exchanger, and a first heating device, and the first The fifth heat exchanger includes a third heat exchange part and a fourth heat exchange part, and the third heat exchange part is not in communication with the fourth heat exchange part; The outlet of the compressor can communicate with the inlet of the third heat exchange part, the outlet of the third heat exchange part can communicate with the inlet of the first flow regulating device; the outlet of the fourth heat exchange part Can communicate with the inlet of the seventh heat exchanger. The thermal management system has a waste heat recovery mode. In the waste heat recovery mode, the compressor, the third heat exchange part, the first flow regulating device, and the first heat exchange part are connected to form a circuit, The first flow adjustment device is connected in series between the outlet of the third heat exchange part and the inlet of the first heat exchange part, the first flow adjustment device is in a throttling state, the first pump, The second heat exchange part, the battery heat exchange assembly and the first heating device are connected to form a loop, the second pump, the fourth heat exchange part and the seventh heat exchanger are connected to form a circuit, The first heat exchange part performs heat exchange with the second heat exchange part, and the third heat exchange part performs heat exchange with the fourth heat exchange part. 11. A control method for a thermal management system, characterized in that the thermal management system includes a compressor, a second heat exchanger, a first flow regulating device, a first heat exchanger, a third heat exchanger, a battery exchange A thermal component, a first pump, and a controller, the controller is used to execute the control method of the thermal management system, the first heat exchanger includes a first heat exchange part and a second heat exchange part, the first heat exchange The heat part is not in communication with the second heat exchange part; The control method of the thermal management system includes: the controller controls the thermal management system to enter a first battery heat dissipation mode, and in the first battery heat dissipation mode, the compressor, the second heat exchanger, The first flow regulating device and the first heat exchange part are connected to form a circuit, the compressor is started and used to provide power for fluid flow, the first flow regulating device is in a throttling state, and the compressor The outlet of the second heat exchanger communicates with the inlet of the second heat exchanger, the outlet of the second heat exchanger communicates with the inlet of the first flow regulating device, and the outlet of the first flow regulating device communicates with the first heat exchanger The inlet of the heat part is connected, the outlet of the first heat exchange part is connected with the inlet of the compressor; the first pump, the battery heat exchange assembly, the third heat exchanger and the second heat exchange The heat part is connected to form a circuit, the first pump is activated and used to provide power for fluid flow, the first heat exchange part exchanges heat with the second heat exchange part, and the second heat exchanger and the The third heat exchangers all release heat to the atmosphere.

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