CN114643833A

CN114643833A - Thermal management system and vehicle

Info

Publication number: CN114643833A
Application number: CN202210420032.1A
Authority: CN
Inventors: 王伟
Original assignee: Guangzhou Xiaopeng Motors Technology Co Ltd
Current assignee: Guangzhou Xiaopeng Motors Technology Co Ltd
Priority date: 2022-04-20
Filing date: 2022-04-20
Publication date: 2022-06-21

Abstract

The application discloses a thermal management system and a vehicle. The thermal management system includes a first cycle assembly and a second cycle assembly. The first circulation assembly comprises a first compressor, a first heat exchange device, a second heat exchange device, a first expansion valve and a third heat exchange device. The second circulation assembly includes a second compressor, a condenser, a second expansion valve, a third expansion valve, an evaporator, and a fourth heat exchange device. When the first compressor is turned off, the second compressor is turned on, the second expansion valve is turned on, and the third expansion valve is turned off, the refrigerant flowing out of the second compressor passes through the condenser, the second expansion valve, and the evaporator in this order, so that the evaporator cools the passenger compartment of the vehicle. Therefore, the working state of the first circulation assembly and/or the second circulation assembly can be controlled according to actual requirements, so that the functions of cooling and/or heating the vehicle and the like can be realized, the energy efficiency of the vehicle in a cooling and heating mode can not be reduced, and the efficient operation of the thermal management system in all seasons can be realized.

Description

Thermal management system and vehicle

Technical Field

The application relates to the field of automobiles, in particular to a thermal management system and a vehicle.

Background

At present, new energy automobiles are widely popularized, and different heating and/or cooling requirements need to be met under different condition environments. In the related art, the vehicle heat pump system is compatible with two working modes of heating and refrigerating at the same time, the energy efficiency is reduced in the refrigerating mode, and efficient operation in all seasons cannot be realized.

Disclosure of Invention

The embodiment of the application provides a thermal management system and a vehicle.

The thermal management system that this application embodiment provided is used for the vehicle, thermal management system includes:

the first circulation assembly comprises a first compressor, a first heat exchange device, a second heat exchange device, a first expansion valve and a third heat exchange device, and the first compressor, the first heat exchange device, the second heat exchange device, the first expansion valve and the third heat exchange device are sequentially connected; and

the second circulation assembly comprises a second compressor, a condenser, a second expansion valve, a third expansion valve, an evaporator and a fourth heat exchange device, the second compressor is connected with the condenser, the evaporator and the fourth heat exchange device, the second expansion valve is connected with the condenser and the evaporator, the third expansion valve is connected with the condenser and the fourth heat exchange device, and the fourth heat exchange device is communicated with the first circulation assembly;

under the conditions that the first compressor is closed, the second compressor is opened, the second expansion valve is opened and the third expansion valve is closed, the refrigerant flowing out of the second compressor sequentially passes through the condenser, the second expansion valve and the evaporator, so that the evaporator cools the passenger compartment of the vehicle.

In some embodiments, the thermal management system further comprises a first pump, a battery, a first four-way valve, and a water-water heat exchanger, wherein the first four-way valve comprises a first valve port, a second valve port, a third valve port, and a fourth valve port, the first valve port is connected to the third heat exchange device, the second valve port is connected to the first pump, the third valve port is connected to the water-water heat exchanger, the fourth valve port is connected to the third heat exchange device, the battery connects the first pump and the fourth heat exchange device, and the fourth heat exchange device is connected to the water-water heat exchanger;

when the first compressor is turned off, the second compressor is turned on, the second expansion valve is turned off, the third expansion valve is turned on, the first pump is turned on, and the second valve port and the third valve port are in a communication state,

the refrigerant flowing out of the second compressor sequentially passes through the condenser, the third expansion valve and the fourth heat exchange device to cool the cooling liquid in the fourth heat exchange device, and the first pump drives the cooling liquid in the fourth heat exchange device to be conveyed to the battery so as to refrigerate the battery.

In certain embodiments, the thermal management system further comprises a first pump, a battery, a first four-way valve, and a water-to-water heat exchanger, the first four-way valve comprising a first valve port, a second valve port, a third valve port, and a fourth valve port, the first valve port being connected to the third heat exchange device, the second valve port being connected to the first pump, the third valve port being connected to the water-to-water heat exchanger, the fourth valve port being connected to the third heat exchange device, the battery connecting the first pump and the fourth heat exchange device, the fourth heat exchange device being connected to the water-to-water heat exchanger;

when the first compressor is closed, the second compressor is opened, the second expansion valve is opened, the third expansion valve is opened, the first pump is opened, and the second valve port and the third valve port are in a conducting state,

the refrigerant flowing out of the second compressor passes through the condenser, the second expansion valve and the evaporator, so that the evaporator refrigerates a passenger compartment of the vehicle;

In some embodiments, the thermal management system comprises a first warm air core, a second warm air core, a water-water heat exchanger, a three-way valve and a second pump, wherein the first warm air core connects the water-water heat exchanger and the first heat exchange device, the second warm air core connects the water-water heat exchanger and the second heat exchange device, the water-water heat exchanger connects the fourth heat exchange device, the three-way valve comprises a fifth valve port, a sixth valve port and a seventh valve port, the fifth valve port connects the first heat exchange device, the seventh valve port connects the second heat exchange device, and the second pump connects the sixth valve port, the second warm air core and the water-water heat exchanger;

when the first compressor is turned on, the second compressor is turned off, the first expansion valve is turned on, the second pump is turned on, and the sixth valve port and the seventh valve port are both in a conduction state with the fifth valve port,

the refrigerant flowing out of the first compressor passes through the first heat exchange device, the second heat exchange device, the first expansion valve and the third heat exchange device;

the second pump drives the cooling liquid in the first heat exchange device and the second heat exchange device to be conveyed to the first warm air core body and the second warm air core body so as to heat the passenger compartment.

In some embodiments, the thermal management system further comprises a first four-way valve, a first pump, and a battery, the first four-way valve comprising a first port, a second port, a third port, and a fourth port, the first port in communication with the third heat exchange device, the second port in communication with the first pump, the third port in communication with the water-to-water heat exchanger, the fourth port in communication with the third heat exchange device, the battery connecting the fourth heat exchange device and the first pump;

when the first compressor is turned on, the second compressor is turned off, the first expansion valve is turned on, the first pump is turned on, the second valve port and the third valve port are in a conduction state, the fifth valve port and the sixth valve port are in a disconnection state, and the seventh valve port and the sixth valve port are in a conduction state,

the second pump drives the cooling liquid of the second heat exchange device to be conveyed to the water-water heat exchanger through the second warm air core body so as to heat the cooling liquid in the water-water heat exchanger;

the first pump drives the cooling liquid in the water-water heat exchanger to be conveyed to the battery so as to heat the battery.

In certain embodiments, when the first compressor is on, the second compressor is off, the first expansion valve is on, the first pump is on, the second port and the third port are in a conducting state, and the sixth port and the seventh port and the fifth port are in a conducting state,

the second pump drives the cooling liquid in the first heat exchange device and the second heat exchange device to be conveyed to the first warm air core and the second warm air core to heat the passenger compartment, and the second pump also drives the cooling liquid in the first warm air core and the second warm air core to be conveyed to the water-water heat exchanger to heat the cooling liquid in the water-water heat exchanger;

the first pump drives the cooling liquid of the water-water heat exchanger to be conveyed to the battery so as to heat the battery.

In some embodiments, when the first compressor is turned on, the second compressor is turned on, the first expansion valve is opened, the second expansion valve is closed, the third expansion valve is opened, the first pump is opened, the second valve port and the third valve port are in a conduction state, the fifth valve port and the sixth valve port are in a conduction state, and the seventh valve port and the sixth valve port are in a disconnection state,

the second pump drives the cooling liquid in the first heat exchange device to be conveyed to the first warm air core body so as to heat the passenger compartment;

In some embodiments, when the first compressor is turned on, the second compressor is turned on, the first expansion valve is opened, the second expansion valve is opened, the third expansion valve is closed, the first pump is opened, the second pump is opened, and the sixth valve port and the seventh valve port are both in a conduction state with the fifth valve port,

the refrigerant flowing out of the second compressor sequentially passes through the condenser, the second expansion valve and the evaporator, so that the evaporator dehumidifies the passenger compartment;

In some embodiments, the thermal management system comprises a first pump, a third pump, a battery, a first four-way valve, a driving component, a radiator and a water-water heat exchanger, wherein the first four-way valve comprises a first valve port, a second valve port, a third valve port and a fourth valve port, the first valve port is connected with the radiator, the second valve port is connected with the first pump, the third valve port is connected with the water-water heat exchanger, the fourth valve port is connected with the third pump, the driving component is connected with the third heat exchange device and the third pump, the radiator is connected with the third heat exchange device, the battery is connected with the first pump and the fourth heat exchange device, and the water-water heat exchanger is connected with the fourth heat exchange device;

when the first compressor is turned off, the second compressor is turned off, the first pump is turned on, the third pump is turned on, the first valve port and the second valve port are in a conduction state, and the third valve port and the fourth valve port are in a conduction state, the first pump and the second pump drive the cooling liquid in the fourth heat exchange device to convey the radiator to release heat and cool to the outside, and the cooled cooling liquid flows to the battery to dissipate heat of the battery.

In certain embodiments, the thermal management system comprises a third pump, a first four-way valve, a driver component, and a heat sink, the first four-way valve comprising a first port and a fourth port, the first port coupled to the heat sink, the fourth port coupled to the third pump, the driver component coupled to the third heat exchange device, the third heat exchange device coupled to the heat sink;

when the first compressor is started, the second compressor is closed, the third pump is started, the first expansion valve is opened, and the first valve port and the fourth valve port are in a conducting state,

the refrigerant flowing out of the first compressor passes through the third heat exchange device, the first expansion valve, the second heat exchange device and the first heat exchange device;

the third pump drives the cooling liquid in the third heat exchange device to be conveyed to the radiator so as to deice the radiator.

The vehicle provided by the embodiment of the application comprises the thermal management system and the vehicle body of any embodiment. The thermal management system is mounted on the vehicle body.

In this way, the operating state of the first and/or second cycle assemblies can be controlled according to actual requirements. The refrigerant in the first circulation assembly and/or the second circulation assembly exchanges heat with the cooling liquid in the thermal management system, so that the functions of cooling and/or heating the vehicle are realized, the energy efficiency of the vehicle in a cooling and heating mode is not reduced, and the efficient operation of the thermal management system in all seasons is realized. When the first compressor is closed, the second compressor is opened, the second expansion valve is opened, and the third expansion valve is closed, the refrigerant flowing out of the second compressor sequentially passes through the condenser, the second expansion valve, and the evaporator, so that the evaporator cools the passenger compartment of the vehicle.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a thermal management system according to an embodiment of the present application;

FIG. 2 is another schematic structural diagram of a thermal management system according to an embodiment of the present application;

FIG. 3 is a schematic diagram of yet another configuration of a thermal management system in accordance with an embodiment of the present application;

FIG. 4 is a schematic illustration of yet another configuration of a thermal management system in accordance with an embodiment of the present application;

FIG. 5 is a schematic illustration of yet another configuration of a thermal management system in accordance with an embodiment of the present application;

FIG. 6 is a schematic representation of yet another configuration of a thermal management system in accordance with an embodiment of the present application;

FIG. 7 is a schematic illustration of yet another configuration of a thermal management system in accordance with an embodiment of the present application;

FIG. 8 is a schematic illustration of yet another configuration of a thermal management system in accordance with an embodiment of the present application;

FIG. 9 is a further schematic illustration of a thermal management system according to an embodiment of the present application;

FIG. 10 is a further schematic view of a thermal management system according to an embodiment of the present application;

FIG. 11 is a schematic illustration of yet another configuration of a thermal management system in accordance with an embodiment of the present application;

FIG. 12 is a schematic representation of yet another configuration of a thermal management system in accordance with an embodiment of the present application;

fig. 13 is a schematic structural diagram of a vehicle according to an embodiment of the present application.

Description of the main element symbols:

a heat management system 100, a refrigerant circuit 101, and a coolant circuit 102;

a first circulation module 11, a first compressor 111, a first heat exchange device 112, a second heat exchange device 113, a first expansion valve 114, a third heat exchange device 115, a gas-liquid separator 116, and an outdoor evaporator 117;

a second circulation component 12, a second compressor 121, a condenser 122, a second expansion valve 123, a third expansion valve 124, an evaporator 125, and a fourth heat exchange device 126;

a first pump 131, a battery 132, a first four-way valve 133, a first valve port a, a second valve port B, a third valve port C, a fourth valve port D, a radiator 134, a first warm air core 135, a second warm air core 136, a water-water heat exchanger 137, a three-way valve 138, a fifth valve port E, a sixth valve port F, a seventh valve port G, a driving part 139, a second pump 141, a third pump 142, a second four-way valve 143, an eighth valve port H, a ninth valve port I, a tenth valve port J, and an eleventh valve port K;

vehicle 1000, vehicle body 200.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically, electrically or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. To simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1, a thermal management system 100 according to an embodiment of the present disclosure is applied to a vehicle 1000 (as shown in fig. 13), where the thermal management system 100 includes a first cycle component 11 and a second cycle component 12. The first circulation module 11 includes a first compressor 111, a first heat exchange device 112, a second heat exchange device 113, a first expansion valve 114, and a third heat exchange device 115, and the first compressor 111, the first heat exchange device 112, the second heat exchange device 113, the first expansion valve 114, and the third heat exchange device 115 are connected in sequence.

The second circulation assembly 12 includes a second compressor 121, a condenser 122, a second expansion valve 123, a third expansion valve 124, an evaporator 125, and a fourth heat exchange device 126, the second compressor 121 connects the condenser 122, the evaporator 125, and the fourth heat exchange device 126, the second expansion valve 123 connects the condenser 122 and the evaporator 125, the third expansion valve 124 connects the condenser 122 and the fourth heat exchange device 126, and the fourth heat exchange device 126 communicates with the first circulation assembly 11.

When the first compressor 111 is off, the second compressor 121 is on, the second expansion valve 123 is on, and the third expansion valve 124 is off, the refrigerant flowing out of the second compressor 121 passes through the condenser 122, the second expansion valve 123, and the evaporator 125 in this order, so that the evaporator 125 cools the passenger compartment of the vehicle 1000.

The vehicle 1000 according to the embodiment of the present application may be a hybrid vehicle or an electric vehicle, that is, the thermal management system 100 according to the embodiment of the present application may be used for a hybrid vehicle or an electric vehicle. Thermal management system 100 may include battery 132 and drive component 139. The battery 132 may be used to provide power to a hybrid vehicle or an electric vehicle. In the embodiment of the present invention, the driving part 139 may include electronic components for driving and controlling the vehicle 1000, such as a driving motor and a motor controller.

It can be understood that new energy vehicles are widely popularized, and different heating and/or cooling requirements need to be met under different condition environments. In the related art, the vehicle heat pump system is compatible with two working modes of heating and refrigerating at the same time, the energy efficiency is reduced in the refrigerating mode, and efficient operation in all seasons cannot be realized.

In this manner, the operating state of the first and/or

second circulation assemblies

11, 12 can be controlled according to actual demand. The refrigerant in the first circulation component 11 and/or the second circulation component 12 exchanges heat with the coolant in the thermal management system 100, so that the functions of cooling and/or heating the vehicle 1000 are realized, the energy efficiency of the vehicle 1000 in the cooling and heating modes is not reduced, and the thermal management system 100 can efficiently operate in all seasons. When the first compressor 111 is turned off, the second compressor 121 is turned on, the second expansion valve 123 is turned on, and the third expansion valve 124 is turned off, the refrigerant flowing out of the second compressor 121 passes through the condenser 122, the second expansion valve 123, and the evaporator 125 in this order, so that the evaporator 125 cools the passenger compartment of the vehicle 1000.

It should be noted that the turning on and off of the first compressor 111 can control the working state of the first circulation component 11, and when the first compressor 111 is turned off, the first circulation component 11 is not in the working state; when the first compressor 111 is turned on, the first circulation assembly 11 is in an operating state, and the first circulation assembly 11 can cool the vehicle 1000. Similarly, the turning on and off of the second compressor 121 can control the working state of the second circulation assembly 12, and when the second compressor 121 is turned off, the second circulation assembly 12 is not in the working state; when the second compressor 121 is turned on, the second circulation module 12 is in an operating state, and the second circulation module 12 can heat the vehicle 1000.

Under different working conditions, the working state of the first circulating assembly 11 and/or the second circulating assembly 12 can be controlled according to actual requirements. The refrigerant in the first circulation component 11 and/or the second circulation component 12 exchanges heat with the coolant in the thermal management system 100, so that the functions of heating the passenger compartment, refrigerating the passenger compartment, cooling the battery 132 or heating and insulating the battery 132 are realized, and the energy consumption of the thermal management system 100 in all seasons is optimized. The first circulation component 11 can be used for controlling the cooling of the vehicle 1000, the second circulation component 12 can be used for controlling the heating of the vehicle 1000, and under the condition that the thermal management system 100 is compatible with the cooling and heating modes of the vehicle 1000, the energy efficiency of the vehicle 1000 in the cooling and heating modes is not reduced, and the efficient operation of the thermal management system 100 in all seasons is realized.

It should be noted that the thermal management system 100 may further include a coolant loop 101 and a coolant loop 102. The first circulation unit 11 and the second circulation unit 12 are both provided on the refrigerant circuit 101. Wherein the first heat exchange device 112, the second heat exchange device 113, the third heat exchange device 115 and the fourth heat exchange device 126 are all arranged on the cooling liquid loop 102. It should be noted that the fourth heat exchanging device 126 is partially disposed on the refrigerant circuit 101.

The thermal management system 100 may be enabled to have a first mode of operation when the first compressor 111 is off, the second compressor 121 is on, the second expansion valve 123 is on, and the third expansion valve 124 is off. Cooling of the passenger compartment of the vehicle 1000 may be achieved in the first mode of operation.

Specifically, in the first operation mode, the first circulation assembly 11 is in a non-operation state when the first compressor 111 is turned off. The second circulation assembly 12 is in operation when the second compressor 121 is on. The second compressor 121 may output the refrigerant to the condenser 122 for condensation, and release heat to the external environment of the vehicle 1000, the cooled refrigerant may enter the evaporator 125 through the second expansion valve 123 to absorb heat of the air flowing through the evaporator 125, and finally the refrigerant returns to the second compressor 121 for the next cycle. The air which is absorbed by heat and cooled is blown into the passenger compartment, so that the passenger compartment is refrigerated. Note that the arrows in fig. 1 indicate the flow direction of the refrigerant.

In one embodiment, when the environment external to the vehicle is high, the thermal management system 100 may be controlled to be in the first mode of operation, i.e., to cool the passenger compartment of the vehicle 1000, to enhance the ride experience for the user.

In certain embodiments, the thermal management system 100 may also include a radiator 134, a drive component 139, a first pump 131, a second pump 141, a third pump 142, a three-way valve 138, a first four-way valve 133, a first warm air core 135, a second warm air core 136, a battery 132, and a water-to-water heat exchanger 137 disposed on the coolant loop 102. Three-way valve 138 may include three ports and first four-way valve 133 may include four ports. The radiator 134 is connected with the third heat exchange device 115 and the first four-way valve 133, the driving part 139 is connected with the third heat exchange device 115 and the third pump 142, the first pump 131 is connected with the first four-way valve 133 and the battery 132, the second pump 141 is connected with the three-way valve 138, the first warm air core 135 and the water-water heat exchanger 137, the third pump 142 is connected with the first four-way valve 133, the three-way valve 138 is connected with the first heat exchange device 112 and the second heat exchange device 113, the first four-way valve 133 is connected with the water-water heat exchanger 137, the first warm air core 135 is connected with the first heat exchange device 112 and the water-water heat exchanger 137, and the second warm air core 136 is connected with the second heat exchange device 113 and the water-water heat exchanger 137.

The first pump 131 may supply the coolant to the battery 132 through the coolant circuit 102, the second pump 141 may supply the coolant to the first heater core 135 and/or the second heater core 136 through the coolant circuit 102, and the third pump 142 may supply the coolant to the driving part 139 through the coolant circuit 102.

The opening and closing of the first compressor 111 and the second compressor 121, the opening and closing of the first pump 131, the second pump 141 and the third pump 142, the opening and closing of the first expansion valve 114, the second expansion valve 123 and the third expansion valve 124, and the conducting and disconnecting states of the three-way valve 138 and the valve ports of the first four-way valve 133 can be controlled, so as to control the flow direction of the cooling liquid in the cooling liquid loop 102 and the flow direction of the refrigerant in the refrigerant loop 101, so that the thermal management system 100 has a plurality of operation modes, such as a battery 132 cooling mode, a passenger compartment heating mode, a battery 132 natural heat dissipation mode, a battery 132 cooling and passenger compartment cooling dual cooling mode, and the like, to meet the cooling and heating requirements of the vehicle 1000 under different working conditions.

Referring to fig. 2, in some embodiments, the thermal management system 100 further includes a first pump 131, a battery 132, a first four-way valve 133, and a water-to-water heat exchanger 137. The first four-way valve 133 includes a first port a, a second port B, a third port C, and a fourth port D. The first valve port A is connected with the third heat exchange device 115, the second valve port B is connected with the first pump 131, the third valve port C is connected with the water-water heat exchanger 137, the fourth valve port D is connected with the third heat exchange device 115, the battery 132 is connected with the first pump 131 and the fourth heat exchange device 126, and the fourth heat exchange device 126 is connected with the water-water heat exchanger 137.

When the first compressor 111 is turned off, the second compressor 121 is turned on, the second expansion valve 123 is turned off, the third expansion valve 124 is turned on, the first pump 131 is turned on, and the second valve port B and the third valve port C are in a conduction state, the refrigerant flowing out of the second compressor 121 passes through the condenser 122, the third expansion valve 124, and the fourth heat exchanger 126 in order to cool the coolant in the fourth heat exchanger 126, and the first pump 131 drives the coolant in the fourth heat exchanger 126 to be sent to the battery 132 to cool the battery 132.

In this way, the coolant in the fourth heat exchanging device 126 is cooled by the refrigerant flowing out of the second compressor 121, the first pump 131 can drive the coolant in the fourth heat exchanging device 126 to be delivered to the battery 132 to cool the battery 132, and the heat dissipation of the battery 132 can improve the safety performance of the vehicle 1000 and the charging speed of the vehicle 1000.

The thermal management system 100 may have a second mode of operation when the first compressor 111 is off, the second compressor 121 is on, the second expansion valve 123 is off, the third expansion valve 124 is on, the first pump 131 is on, and the second port B and the third port C are in a conductive state. Cooling of the battery 132 may be achieved in the second mode of operation.

When any two ports of the first four-way valve 133 are in a conduction state, a medium can flow between the two ports.

Specifically, in the second operation mode, the first circulation assembly 11 is in a non-operation state when the first compressor 111 is turned off. The second circulation assembly 12 is in operation when the second compressor 121 is on. The second compressor 121 may output the refrigerant to the condenser 122 for condensation, and release heat to the external environment of the vehicle 1000, the cooled refrigerant may enter the fourth heat exchanging device 126 through the third expansion valve 124 to absorb heat of the coolant flowing through the fourth heat exchanging device 126, and then the refrigerant returns to the second compressor 121 for the next cycle.

Under the condition that the second valve port B and the third valve port C are in a conducting state and the first pump 131 is turned on, the first pump 131 can deliver the cooling liquid cooled by the refrigerant in the fourth heat exchanging device 126 to the battery 132 through the water-water heat exchanger 137, the third valve port C and the second valve port B to cool the battery 132, and then the cooling liquid can also return to the fourth heat exchanging device 126 for the next circulation. Note that the arrows in fig. 2 indicate the flow direction of the refrigerant and the flow direction of the coolant.

Referring to fig. 3, in some embodiments, the thermal management system 100 further includes a first pump 131, a battery 132, a first four-way valve 133, and a water-water heat exchanger 137. First four-way valve 133 includes a first port a, a second port B, a third port C, and a fourth port D. The first valve port A is connected with the third heat exchange device 115, the second valve port B is connected with the first pump 131, the third valve port C is connected with the water-water heat exchanger 137, the fourth valve port D is connected with the third heat exchange device 115, the battery 132 is connected with the first pump 131 and the fourth heat exchange device 126, and the fourth heat exchange device 126 is connected with the water-water heat exchanger 137.

When the first compressor 111 is off, the second compressor 121 is on, the second expansion valve 123 is on, the third expansion valve 124 is on, the first pump 131 is on, and the second valve port B and the third valve port C are in a conductive state, the refrigerant flowing out of the second compressor 121 passes through the condenser 122, the second expansion valve 123, and the evaporator 125, so that the evaporator 125 cools the passenger compartment of the vehicle 1000.

The refrigerant flowing out of the second compressor 121 sequentially passes through the condenser 122, the third expansion valve 124 and the fourth heat exchanger 126 to cool the coolant in the fourth heat exchanger 126, and the first pump 131 drives the coolant in the fourth heat exchanger 126 to be delivered to the battery 132 to cool the battery 132.

Thus, the second compressor 121 sequentially outputs the refrigerant to the condenser 122 and the evaporator 125, and the cooled refrigerant can absorb the heat of the air flowing through the evaporator 125 to realize the refrigeration of the passenger compartment; meanwhile, the coolant in the fourth heat exchanging device 126 is cooled by the coolant flowing out of the second compressor 121, and the first pump 131 can drive the coolant in the fourth heat exchanging device 126 to be delivered to the battery 132 to cool the battery 132, so that a dual cooling mode for cooling the passenger compartment and cooling the battery 132 is realized.

The thermal management system 100 may be enabled to have a third mode of operation when the first compressor 111 is off, the second compressor 121 is on, the second expansion valve 123 is on, the third expansion valve 124 is on, the first pump 131 is on, and the second port B and the third port C are in a conductive state. In the third operating mode, cooling of the passenger compartment of the vehicle 1000 and cooling of the battery 132 can be achieved, so that simultaneous cooling of the passenger compartment and the battery 132 can be achieved.

Specifically, in the third operation mode, the first circulation assembly 11 is in a non-operation state when the first compressor 111 is turned off. The second circulation assembly 12 is in operation when the second compressor 121 is on. The second compressor 121 may output the refrigerant to the condenser 122 for condensation, release heat to the external environment of the vehicle 1000, a portion of the cooled refrigerant may enter the evaporator 125 through the second expansion valve 123 to absorb heat of the air flowing through the evaporator 125, and finally the refrigerant returns to the second compressor 121 for the next cycle. And the air which is absorbed by heat and cooled is blown into the passenger compartment, so that the refrigeration of the passenger compartment is realized.

Another part of the cooled refrigerant may enter the fourth heat exchange device 126 through the third expansion valve 124 to absorb heat of the cooling liquid flowing through the fourth heat exchange device 126, and then the refrigerant returns to the second compressor 121 for the next cycle. Under the condition that the second valve port B and the third valve port C are in a conducting state and the first pump 131 is turned on, the first pump 131 can deliver the cooling liquid cooled by the refrigerant in the fourth heat exchanging device 126 to the battery 132 through the water-water heat exchanger 137, the third valve port C and the second valve port B to cool the battery 132, and then the cooling liquid can also return to the fourth heat exchanging device 126 for the next circulation. Note that the arrows in fig. 3 indicate the flow direction of the refrigerant and the flow direction of the coolant.

Referring to fig. 4, in some embodiments, the thermal management system 100 includes a first warm air core 135, a second warm air core 136, a water-water heat exchanger 137, a three-way valve 138, and a second pump 141. The first warm air core 135 is connected with the water-water heat exchanger 137 and the first heat exchange device 112, the second warm air core 136 is connected with the water-water heat exchanger 137 and the second heat exchange device 113, and the water-water heat exchanger 137 is connected with the fourth heat exchange device 126. The three-way valve 138 includes a fifth port E, a sixth port F, and a seventh port G, the fifth port E is connected to the first heat exchanging device 112, the seventh port G is connected to the second heat exchanging device 113, and the second pump 141 is connected to the sixth port F, the second warm air core 136, and the water-water heat exchanger 137.

When the first compressor 111 is turned on, the second compressor 121 is turned off, the first expansion valve 114 is turned on, the second pump 141 is turned on, and the sixth port F and the seventh port G are both in a conduction state with the fifth port E, the refrigerant flowing out of the first compressor 111 passes through the first heat exchanger 112, the second heat exchanger 113, the first expansion valve 114, and the third heat exchanger 115.

The second pump 141 drives the cooling liquid in the first heat exchanging device 112 and the second heat exchanging device 113 to be delivered to the first heater core 135 and the second heater core 136 to heat the passenger compartment.

In this way, the coolant in the first heat exchanger 112 and the coolant in the second heat exchanger 113 are released heat by the coolant flowing out from the first compressor 111, and the second pump 141 can convey the coolant in the first heat exchanger 112 and the second heat exchanger 113 to the first heater core 135 and the second heater core 136, so as to heat the air flowing through the first heater core 135 and the second heater core 136, and the heated air is blown into the passenger compartment to realize passenger compartment heating.

When the first compressor 111 is turned on, the second compressor 121 is turned off, the first expansion valve 114 is turned on, the second pump 141 is turned on, the second port B and the third port C are in a conduction state, the fifth port E and the sixth port F are in a conduction state, and the seventh port G and the sixth port F are in a conduction state, the thermal management system 100 may have a fourth operation mode. Heating of the passenger compartment of the vehicle 1000 may be achieved in the fourth mode of operation.

It should be noted that when any two ports of the three-way valve 138 are in a conducting state, the medium can be communicated between the two ports.

Specifically, in the fourth operating mode, the second circulation assembly 12 is in a non-operating state when the second compressor 121 is off. The first circulation assembly 11 is in operation when the first compressor 111 is on. The first compressor 111 may output the refrigerant to the first heat exchanging device 112 and the second heat exchanging device 113 to release heat of the coolant flowing through the first heat exchanging device 112 and the second heat exchanging device 113, and then the refrigerant may flow from the second heat exchanging device 113 to the first expansion valve 114 to be throttled and expanded. The expanded and cooled refrigerant flows into the third heat exchanger 115 to absorb heat of the coolant flowing through the third heat exchanger 115, and finally returns to the first compressor 111 for the next cycle.

Under the conditions that the second pump 141 is opened, the fifth valve port E and the sixth valve port F are communicated, and the sixth valve port F and the seventh valve port G are communicated, the second pump 141 can pump the heated coolant flowing through the first heat exchanging device 112 into the water-water heat exchanger 137 and the first warm air core 135 through the fifth valve port E and the sixth valve port F; the second pump 141 may also pump the coolant heated after passing through the second heat exchanging device 113 into the water-water heat exchanger 137 and the first warm air core 135 through the seventh valve port G and the sixth valve port F to heat the air passing through the first warm air core 135, and the coolant passing through the water-water heat exchanger 137 may be pumped into the second warm air core 136 to heat the air passing through the second warm air core 136. The heated air is blown into the passenger compartment to effect heating of the passenger compartment. Finally, the cooling liquid in the first warm air core 135 can be returned to the first heat exchanging device 112, and the cooling liquid in the second warm air core 136 can be returned to the second heat exchanging device 113 for the next circulation. Note that the arrows in fig. 4 indicate the flow direction of the refrigerant and the flow direction of the coolant.

In certain embodiments, thermal management system 100 may also include a first four-way valve 133, a radiator 134, a third pump 142, and a drive component 139. First four-way valve 133 includes a first port a, a second port B, a third port C, and a fourth port D. The first port A is connected with the radiator 134, the second port B is communicated with the fourth heat exchange device 126, the third port C is connected with the water-water heat exchanger 137, and the fourth port D is communicated with the third heat exchange device 115. Radiator 134 is connected to third heat exchange device 115, drive component 139 is connected to third heat exchange device 115 and third pump 142, and third pump 142 is further connected to fourth port D of first four-way valve 133.

In the fourth operation mode, when the third pump 142 is turned on and the first valve port a and the fourth valve port D are in a conduction state, the third pump 142 may pump the coolant that has absorbed heat and cooled after flowing through the third heat exchanging device 115 into the radiator 134 to absorb heat of the environment outside the vehicle, and then the coolant may enter the driving component 139 through the first valve port a and the fourth valve port D to absorb waste heat of the driving component 139, and finally the coolant that has absorbed heat and warmed up returns to the third heat exchanging device 115 to perform the next circulation. The heat pump function of transferring heat from the environment outside the vehicle to the passenger compartment can be realized, and the waste heat of the driving member 139 can be recovered and utilized to heat the passenger compartment.

Referring to fig. 5, in some embodiments, the thermal management system 100 further includes a first four-way valve 133, a first pump 131, and a battery 132. The first four-way valve 133 includes a first port a, a second port B, a third port C, and a fourth port D, the first port a is connected to the third heat exchanging device 115, the second port B is connected to the first pump 131, the third port C is connected to the water-water heat exchanger 137, and the fourth port D is connected to the third heat exchanging device 115. The battery 132 is connected to the first pump 131 and the fourth heat exchanging means 126.

When the first compressor 111 is turned on, the second compressor 121 is turned off, the first expansion valve 114 is turned on, the second pump 141 is turned on, the second port B and the third port C are in a conduction state, the fifth port E and the sixth port F are in a disconnection state, and the seventh port G and the sixth port F are in a conduction state, the refrigerant flowing out of the first compressor 111 passes through the first heat exchanger 112 and the second heat exchanger 113, and the first expansion valve 114 and the third heat exchanger 115;

the second pump 141 drives the cooling liquid of the second heat exchange device 113 to be conveyed to the water-water heat exchanger 137 through the second warm air core 136 so as to heat the cooling liquid in the water-water heat exchanger 137;

the first pump 131 drives the coolant in the water-water heat exchanger 137 to be delivered to the battery 132 to heat the battery 132.

In this way, the coolant flowing out of the first compressor 111 releases heat to the coolant in the first heat exchanger 112 and the second heat exchanger 113, the second pump 141 can convey the coolant in the second heat exchanger 113 to the water-water heat exchanger 137, and the first pump 131 can pump the heated coolant flowing through the water-water heat exchanger 137 into the battery 132 to heat the battery 132.

The thermal management system 100 may have a fifth mode of operation when the first compressor 111 is on, the second compressor 121 is off, the first expansion valve 114 is on, the second pump 141 is on, the second port B and the third port C are in a conducting state, the fifth port E and the sixth port F are in an off state, and the seventh port G and the sixth port F are in a conducting state. Heating of battery 132 may be achieved in the fifth mode of operation.

Specifically, in the fifth operating mode, the second circulation assembly 12 is in a non-operating state when the second compressor 121 is off. The first circulation device 11 is in an operation state when the first compressor 111 is turned on. The first compressor 111 may output the refrigerant to the first heat exchanging device 112 and the second heat exchanging device 113 to release heat of the coolant flowing through the first heat exchanging device 112 and the second heat exchanging device 113, and then the refrigerant may flow from the second heat exchanging device 113 to the first expansion valve 114 to be throttled and expanded. The expanded and cooled refrigerant flows into the third heat exchanger 115 to absorb heat of the coolant flowing through the third heat exchanger 115, and finally the refrigerant returns to the first compressor 111 for the next cycle.

Under the condition that the second pump 141 is opened, the fifth valve port E and the sixth valve port F are in the off state, and the seventh valve port G and the sixth valve port F are in the on state, the second pump 141 may pump the heated coolant flowing through the second heat exchanger 113 into the water-water heat exchanger 137 through the seventh valve port G and the sixth valve port F, heat the coolant flowing through the water-water heat exchanger 137, pump the coolant flowing through the water-water heat exchanger 137 into the second warm air core 136, and finally, the coolant in the second warm air core 136 may return to the second heat exchanger 113 for the next circulation.

Under the condition that the first pump 131 is turned on and the second port B and the third port C are in a conduction state, the first pump 131 may pump the coolant, which is heated after passing through the water-water heat exchanger 137, into the battery 132 through the third port C and the second port B to heat the battery 132. Note that arrows in fig. 5 indicate the flow direction of the refrigerant and the flow direction of the coolant.

In certain embodiments, thermal management system 100 may also include a heat sink 134, a third pump 142, and a drive component 139. Radiator 134 connects third heat exchange device 115 to first port a, drive component 139 connects third heat exchange device 115 to third pump 142, and third pump 142 is also connected to fourth port D of first four-way valve 133.

In the fifth operation mode, when the third pump 142 is turned on and the first valve port a and the fourth valve port D are in a conduction state, the third pump 142 may pump the coolant that has been subjected to heat absorption and temperature reduction after flowing through the third heat exchanging device 115 into the radiator 134 to absorb heat of the environment outside the vehicle, and then the coolant may enter the driving component 139 through the first valve port a and the fourth valve port D to absorb waste heat of the driving component 139, and finally the coolant that has been subjected to heat absorption and temperature rise returns to the third heat exchanging device 115 to perform the next circulation. The heat pump function of transferring heat from the environment outside the vehicle to battery 132 can be realized, and the waste heat of driving unit 139 can be recovered and utilized to heat battery 132.

Referring to fig. 6, in some embodiments, when the first compressor 111 is turned on, the second compressor 121 is turned off, the first expansion valve 114 is turned on, the first pump 131 is turned on, the second pump 141 is turned on, the second port B and the third port C are in a conduction state, and the sixth port F and the seventh port G are in a conduction state with the fifth port E,

a refrigerant flowing out of the first compressor 111 passes through the first heat exchange device 112, the second heat exchange device 113, the first expansion valve 114, and the third heat exchange device 115;

the second pump 141 drives the cooling liquid in the first heat exchanging device 112 and the second heat exchanging device 113 to be conveyed to the first warm air core 135 and the second warm air core 136 to heat the passenger compartment, and the second pump 141 conveys the cooling liquid in the first warm air core 135 and the second warm air core 136 to the water-water heat exchanger 137 to heat the cooling liquid in the water-water heat exchanger 137;

the first pump 131 drives the cooling fluid of the water-water heat exchanger 137 to be delivered to the battery 132 to heat the battery 132.

In this way, the second pump 141 can deliver the coolant in the first heat exchanger 112 and the second heat exchanger 113 to the first heater core 135 and the second heater core 136, heat the air flowing through the first heater core 135 and the second heater core 136, and blow the heated air into the passenger compartment to realize passenger compartment heating; meanwhile, the first pump 131 may pump the coolant, which is heated after passing through the water-water heat exchanger 137, into the battery 132 to heat the battery 132, thereby implementing a dual heating mode for cooling the passenger compartment and cooling the battery 132.

When the first compressor 111 is turned on, the second compressor 121 is turned off, the first expansion valve 114 is turned on, the first pump 131 is turned on, the second pump 141 is turned on, the second port B and the third port C are in a conduction state, the fifth port E and the sixth port F are in a conduction state, and the seventh port G and the sixth port F are in a conduction state, the thermal management system 100 may have a sixth operation mode. Heating of the battery 132 and the passenger compartment of the vehicle 1000 may be achieved in the sixth mode of operation.

Specifically, in the sixth operating mode, the second circulation assembly 12 is in a non-operating state when the second compressor 121 is off. The first circulation assembly 11 is in operation when the first compressor 111 is on. The first compressor 111 may output the refrigerant to the first heat exchanging device 112 and the second heat exchanging device 113 to release heat of the coolant flowing through the first heat exchanging device 112 and the second heat exchanging device 113, and then the refrigerant may flow from the second heat exchanging device 113 to the first expansion valve 114 to be throttled and expanded. The expanded and cooled refrigerant flows into the third heat exchanger 115 to absorb heat of the coolant flowing through the third heat exchanger 115, and finally returns to the first compressor 111 for the next cycle.

Under the conditions that the second pump 141 is opened, the fifth valve port E and the sixth valve port F are in conduction, and the sixth valve port F and the seventh valve port G are in conduction, the second pump 141 can pump the coolant heated after flowing through the first heat exchanging device 112 into the water-water heat exchanger 137 and the first warm air core 135 through the fifth valve port E and the sixth valve port F; the second pump 141 may also pump the coolant heated after passing through the second heat exchanging device 113 into the water-water heat exchanger 137 and the first warm air core 135 through the seventh valve port G and the sixth valve port F to heat the air passing through the first warm air core 135, and the coolant passing through the water-water heat exchanger 137 may be pumped into the second warm air core 136 to heat the air passing through the second warm air core 136. The heated air is blown into the passenger compartment to effect heating of the passenger compartment. Finally, the cooling liquid in the first warm air core 135 can be returned to the first heat exchanging device 112, and the cooling liquid in the second warm air core 136 can be returned to the second heat exchanging device 113 for the next circulation.

With the first pump 131 turned on and the second and third ports B and C in a conductive state, the first pump 131 may pump the coolant, which is heated after passing through the water-water heat exchanger 137, into the battery 132 to heat the battery 132. Note that the arrows in fig. 6 indicate the flow direction of the refrigerant and the flow direction of the coolant.

In certain embodiments, thermal management system 100 may also include a radiator 134, a third pump 142, and a drive component 139. Radiator 134 connects third heat exchange device 115 to first port a, drive component 139 connects third heat exchange device 115 to third pump 142, and third pump 142 is also connected to fourth port D of first four-way valve 133.

In the sixth operating mode, when the third pump 142 is turned on and the first valve port a and the fourth valve port D are in a conducting state, the third pump 142 may pump the coolant that has absorbed heat and cooled after flowing through the third heat exchanging device 115 into the radiator 134 to absorb heat of the environment outside the vehicle, and then the coolant may enter the driving component 139 through the first valve port a and the fourth valve port D to absorb waste heat of the driving component 139, and finally the coolant that has absorbed heat and heated returns to the third heat exchanging device 115 to perform the next cycle. The heat pump function of transferring heat from the environment outside the vehicle to the battery 132 and the passenger compartment can be realized, and the waste heat of the driving part 139 can be recovered and utilized to heat the battery 132 and the passenger compartment.

Referring to fig. 7, in some embodiments, when the first compressor 111 is turned on, the second compressor 121 is turned on, the first expansion valve 114 is turned on, the second expansion valve 123 is closed, the third expansion valve 124 is turned on, the first pump 131 is turned on, the second pump 141 is turned on, the second port B and the third port C are in a conduction state, the fifth port E and the sixth port F are in a conduction state, and the seventh port G and the sixth port F are in a disconnection state, the refrigerant flowing out of the first compressor 111 passes through the first heat exchanger 112, the second heat exchanger 113, the first expansion valve 114 and the third heat exchanger 115; the second pump 141 drives the coolant in the first heat exchanging device 112 to be delivered to the first heater core 135 to heat the passenger compartment.

In this way, the coolant in the first heat exchanger 112 and the coolant in the second heat exchanger 113 are released by the coolant flowing out from the first compressor 111, and at the same time, the second pump 141 can convey the coolant in the first heat exchanger 112 to the first warm air core 135 to heat the air flowing through the first warm air core 135, and the heated air is blown into the passenger compartment to realize passenger compartment heating; meanwhile, the coolant in the fourth heat exchanging device 126 is cooled by the coolant flowing out of the second compressor 121, and the first pump 131 can drive the coolant in the fourth heat exchanging device 126 to be delivered to the battery 132 to cool the battery 132, so that the battery 132 can be cooled while the passenger compartment is heated.

When the first compressor 111 is turned on, the second compressor 121 is turned on, the first expansion valve 114 is turned on, the second expansion valve 123 is turned off, the third expansion valve is turned on, the first pump 131 is turned on, the second pump 141 is turned on, the second valve port B and the third valve port C are in a conduction state, the fifth valve port E and the sixth valve port F are in a conduction state, and the seventh valve port G and the sixth valve port F are in a disconnection state, the thermal management system 100 may have a seventh operation mode. Heating of the passenger compartment and cooling of the battery 132 may be achieved in the seventh mode of operation.

Specifically, in the seventh operation mode, the first circulation assembly 11 is in an operation state while the first compressor 111 is turned on. The first compressor 111 may output the refrigerant to the first heat exchanging device 112 and the second heat exchanging device 113 to release heat of the coolant flowing through the first heat exchanging device 112 and the second heat exchanging device 113, and then the refrigerant may flow from the second heat exchanging device 113 to the first expansion valve 114 to be throttled and expanded. The expanded and cooled refrigerant flows into the third heat exchanger 115 to absorb heat of the coolant flowing through the third heat exchanger 115, and finally returns to the first compressor 111 for the next cycle.

When the second pump 141 is turned on, the fifth valve port E and the sixth valve port F are in a conduction state, and the seventh valve port G and the sixth valve port F are in a disconnection state, the second pump 141 may pump the coolant, which is heated after flowing through the first heat exchanging device 112, into the water-water heat exchanger 137 and the first warm air core 135 through the fifth valve port E and the sixth valve port F, heat the air flowing through the first warm air core 135, and the heated air is blown into the passenger compartment to heat the passenger compartment. Finally, the cooling liquid in the first warm air core 135 can be returned to the first heat exchanging device 112 for the next circulation.

When the second compressor 121 is turned on, the second circulation assembly 12 is in a working state, the second compressor 121 may output the refrigerant to the condenser 122 for condensation, and release heat to the external environment of the vehicle 1000, the cooled refrigerant may enter the fourth heat exchange device 126 through the third expansion valve 124 to absorb heat of the coolant flowing through the fourth heat exchange device 126, and then the refrigerant returns to the second compressor 121 for the next circulation.

Under the condition that the second valve port B and the third valve port C are in a conducting state and the first pump 131 is turned on, the first pump 131 can deliver the cooling liquid cooled by the refrigerant in the fourth heat exchanging device 126 to the battery 132 through the water-water heat exchanger 137, the third valve port C and the second valve port B to cool the battery 132, and then the cooling liquid can also return to the fourth heat exchanging device 126 for the next circulation. Note that the arrows in fig. 7 indicate the flow direction of the refrigerant and the flow direction of the coolant.

In some embodiments, thermal management system 100 may further include a heat sink 134, a third pump 142, and a drive component 139, heat sink 134 connecting third heat exchange device 115 to first port a, drive component 139 connecting third heat exchange device 115 to third pump 142, and third pump 142 further connected to fourth port D of first four-way valve 133.

In the seventh operating mode, when the third pump 142 is turned on and the first valve port a and the fourth valve port D are in a conduction state, the third pump 142 may pump the coolant that has been subjected to heat absorption and temperature reduction after flowing through the third heat exchanging device 115 into the radiator 134 to absorb heat of the environment outside the vehicle, and then the coolant may enter the driving component 139 through the first valve port a and the fourth valve port D to absorb waste heat of the driving component 139, and finally the coolant that has been subjected to heat absorption and temperature rise returns to the third heat exchanging device 115 to perform the next circulation. The heat pump function of transferring heat from the environment outside the vehicle to the passenger compartment can be realized, and the waste heat of the driving member 139 can be recovered and utilized to heat the passenger compartment.

Referring to fig. 8, in some embodiments, when the first compressor 111 is turned on, the second compressor 121 is turned on, the first expansion valve 114 is turned on, the second expansion valve 123 is turned on, the third expansion valve 124 is closed, the first pump 131 is turned on, the second pump 141 is turned on, the second port B and the third port C are in a conduction state, and the sixth port F and the seventh port G are in a conduction state with the fifth port E,

the refrigerant flowing out of the second compressor 121 sequentially passes through the condenser 122, the second expansion valve 123 and the evaporator 125, so that the evaporator 125 dehumidifies the passenger compartment;

a refrigerant flowing out of the first compressor 111 passes through the first heat exchange device 112, the second heat exchange device 113, the first expansion valve 114 and the third heat exchange device 115;

In this way, the coolant in the first heat exchanger 112 and the coolant in the second heat exchanger 113 are released by the coolant flowing out from the first compressor 111, and at the same time, the second pump 141 can convey the coolant in the first heat exchanger 112 and the second heat exchanger 113 to the first heater core 135 and the second heater core 136, so as to heat the air flowing through the first heater core 135 and the second heater core 136, and the heated air is blown into the passenger compartment to realize passenger compartment heating; meanwhile, the refrigerant flowing out of the second compressor 121 absorbs heat of the air flowing through the evaporator 125, and the air flowing through the evaporator 125 is cooled and dehumidified. When dehumidification is guaranteed, the temperature in the passenger cabin can be maintained so as to avoid influence on user experience caused by too low temperature in the passenger cabin in the dehumidification process.

When the first compressor 111 is turned on, the second compressor 121 is turned on, the first expansion valve 114 is turned on, the second expansion valve 123 is turned on, the third expansion valve 124 is closed, the first pump 131 is turned on, the second pump 141 is turned on, the second port B and the third port C are in a conduction state, the fifth port E and the sixth port F are in a conduction state, and the seventh port G and the sixth port F are in a conduction state, the thermal management system 100 may have an eighth operation mode. In the eighth operating mode, heating of the passenger compartment and dehumidification of the air in the passenger compartment can be achieved.

Specifically, in the eighth operation mode, the first circulation assembly 11 is in an operation state while the first compressor 111 is turned on. The first compressor 111 may output the refrigerant to the first heat exchanging device 112 and the second heat exchanging device 113 to release heat of the coolant flowing through the first heat exchanging device 112 and the second heat exchanging device 113, and then the refrigerant may flow from the second heat exchanging device 113 to the first expansion valve 114 to be throttled and expanded. The expanded and cooled refrigerant flows into the third heat exchanger 115 to absorb heat of the coolant flowing through the third heat exchanger 115, and finally returns to the first compressor 111 for the next cycle.

Under the conditions that the second pump 141 is opened, the fifth valve port E and the sixth valve port F are communicated, and the sixth valve port F and the seventh valve port G are communicated, the second pump 141 can pump the heated coolant flowing through the first heat exchanging device 112 into the water-water heat exchanger 137 and the first warm air core 135 through the fifth valve port E and the sixth valve port F; the second pump 141 may also pump the coolant heated after passing through the second heat exchanging device 113 into the water-water heat exchanger 137 and the first warm air core 135 through the seventh valve port G and the sixth valve port F to heat the air passing through the first warm air core 135, and the coolant passing through the water-water heat exchanger 137 may be pumped into the second warm air core 136 to heat the air passing through the second warm air core 136. The heated air is blown into the passenger compartment to effect heating of the passenger compartment. Finally, the cooling liquid in the first warm air core 135 can be returned to the first heat exchanging device 112, and the cooling liquid in the second warm air core 136 can be returned to the second heat exchanging device 113 for the next circulation.

The second circulation unit 12 is in an operation state when the second compressor 121 is turned on, and the second circulation unit 12 is in an operation state when the second compressor 121 is turned on. The second compressor 121 may output the refrigerant to the condenser 122 for condensation, and release heat to the external environment of the vehicle 1000, and the refrigerant after temperature reduction may enter the evaporator 125 through the second expansion valve 123 to absorb heat of the air flowing through the evaporator 125, so that the air flowing through the evaporator 125 is cooled and dehumidified. Finally, the refrigerant may return to the second compressor 121 for the next cycle. Note that arrows in fig. 8 indicate the flow direction of the refrigerant and the flow direction of the coolant.

In certain embodiments, thermal management system 100 may also include a heat sink 134, a third pump 142, and a drive component 139. Radiator 134 connects third heat exchange device 115 to first port a, drive component 139 connects third heat exchange device 115 to third pump 142, and third pump 142 is also connected to fourth port D of first four-way valve 133. In the eighth operation mode, when the third pump 142 is turned on and the first valve port a and the fourth valve port D are in a conduction state, the third pump 142 may pump the coolant that has been subjected to heat absorption and temperature reduction after flowing through the third heat exchanging device 115 into the radiator 134 to absorb heat of the environment outside the vehicle, and then the coolant may enter the driving component 139 through the first valve port a and the fourth valve port D to absorb waste heat of the driving component 139, and finally the coolant that has been subjected to heat absorption and temperature rise returns to the third heat exchanging device 115 to perform the next circulation. The heat pump function of transferring heat from the environment outside the vehicle to the passenger compartment can be realized, and the waste heat of the driving member 139 can be recovered and utilized to heat the passenger compartment.

In some embodiments, the first circulation assembly 11 may further include a gas-liquid separator 116, the gas-liquid separator 116 is disposed on the refrigerant return path of the thermal management system 100, and the gas-liquid separator 116 is connected to the third heat exchange device 115 and the fourth heat exchange device 126. When the first compressor 111 is turned on and the first expansion valve 114 is turned on, the first compressor 111 may output the refrigerant to the first heat exchanging device 112 and the second heat exchanging device 113 to release heat of the coolant flowing through the first heat exchanging device 112 and the second heat exchanging device 113, and then the refrigerant may flow from the second heat exchanging device 113 to the first expansion valve 114 to be throttled and expanded. The refrigerant after the expansion and temperature reduction flows into the third heat exchanger 115 to absorb heat of the coolant flowing through the third heat exchanger 115, the refrigerant may flow from the third heat exchanger 115 to the gas-liquid separator 116 to undergo gas-liquid separation, and finally the refrigerant returns to the first compressor 111 to undergo the next cycle.

Referring to fig. 9, in some embodiments, the thermal management system 100 includes a first pump 131, a third pump 142, a battery 132, a first four-way valve 133, a driving component 139, a radiator 134, and a water-water heat exchanger 137. the first four-way valve 133 includes a first port a, a second port B, a third port C, and a fourth port D, the first port a is connected to the radiator 134, the second port B is connected to the first pump 131, the third port C is connected to the water-water heat exchanger 137, and the fourth port D is connected to the third pump 142. The driving part 139 is connected with the third heat exchanging device 115 and the third pump 142, the radiator 134 is connected with the third heat exchanging device 115, the battery 132 is connected with the first pump 131 and the fourth heat exchanging device 126, and the water-water heat exchanger 137 is connected with the fourth heat exchanging device 126.

When the first compressor 111 is turned off, the second compressor 121 is turned off, the first pump 131 is turned on, the third pump 142 is turned on, the first port a and the second port B are in a conduction state, and the third port C and the fourth port D are in a conduction state, the first pump 131 and the second pump 141 drive the coolant delivery radiator 134 in the fourth heat exchanging device 126 to release heat to the outside and cool, and the cooled coolant flows to the battery 132 to dissipate heat from the battery 132.

In this way, the cooling liquid can be delivered to the radiator 134 through the first pump 131, the third pump 142, the three-way valve 138 and the first four-way valve 133 to release heat and cool to the external environment, and the cooled cooling liquid is guided into the battery 132 and the driving component 139, so that natural heat dissipation of the battery 132 and the driving component 139 is realized.

When the first compressor 111 is turned off, the second compressor 121 is turned off, the first pump 131 is turned on, the third pump 142 is turned on, the first port a and the second port B are in a conduction state, and the third port C and the fourth port D are in a conduction state, the thermal management system 100 may have a ninth operation mode. In the ninth operating mode, self-heating heat dissipation of the battery 132 of the vehicle 1000 can be achieved.

Specifically, under the combined action of the first pump 131 and the third pump 142, the coolant can be introduced into the third heat exchanger 115 from the third heat exchanger 115 and the coolant in the water-water heat exchanger 137 through the third valve port C and the fourth valve port D, the coolant can flow from the third heat exchanger 115 to the radiator 134 to release heat and cool to the external environment, and the cooled coolant can be introduced into the battery 132 through the first valve port a and the second valve port B, so that the natural heat dissipation of the battery 132 is realized. It can be understood that the cooled coolant can also enter the driving component 139 through the third valve port C and the fourth valve port D, so as to achieve natural heat dissipation of the driving component 139. Note that the arrows in fig. 9 indicate the flow direction of the refrigerant and the flow direction of the coolant.

The natural heat dissipation of the thermal management system 100 in the ninth mode may be suitable for use when charging the vehicle 1000 in spring and autumn. Because the vehicle 1000 is charged, the battery 132 and the driving component 139 generate heat, and because the environmental temperature in spring and autumn is low, the heat dissipation of the power battery 132 and the electric driving component is completed by using the radiator 134, and the device of the second circulation assembly 12 does not need to be started for auxiliary heat dissipation, so that the charging efficiency of the vehicle 1000 can be improved while the electric energy is saved.

Referring to fig. 10, in some embodiments, thermal management system 100 includes a third pump 142, a first four-way valve 133, a drive component 139, and a radiator 134. The first four-way valve 133 includes a first port a connected to the radiator 134 and a fourth port D connected to the third pump 142. The driving part 139 is connected to the third heat exchanging device 115, and the third heat exchanging device 115 is connected to the heat sink 134.

When the first compressor 111 is turned on, the second compressor 121 is turned off, the third pump 142 is turned on, the first expansion valve 114 is turned on, and the first port a and the fourth port D are in a conduction state, the refrigerant flowing out of the first compressor 111 passes through the third heat exchanger 115, the first expansion valve 114, the second heat exchanger 113, and the first heat exchanger 112. The third pump 142 drives the coolant in the third heat exchanging device 115 to be delivered to the radiator 134 to deice the radiator 134.

In this way, the heat radiator 134 can be efficiently deiced by the high-temperature and high-pressure refrigerant flowing out of the first compressor 111 to the third heat exchanger 115.

When the first compressor 111 is turned on, the second compressor 121 is turned off, the first expansion valve 114 is turned on, and the first port a and the fourth port D are in a conduction state, the thermal management system 100 may have a tenth operation mode. In the tenth mode of operation, a de-icing process for the heat sink 134 may be implemented.

Specifically, in the tenth operating mode, the second circulation assembly 12 is in a non-operating state when the second compressor 121 is turned off. The first circulation assembly 11 is in operation when the first compressor 111 is on. The first compressor 111 may output the refrigerant to the third heat exchange device 115 to release heat of the coolant flowing through the third heat exchange device 115, and then the refrigerant may flow from the third heat exchange device 115 to the first expansion valve 114 to be throttled and expanded. The expanded and cooled refrigerant flows into the second heat exchanger 113 and the second heat exchanger 112 to absorb heat of the coolant flowing through the second heat exchanger 113 and the second heat exchanger 112, and finally returns to the first compressor 111 for the next cycle. Note that the arrows in fig. 10 indicate the flow direction of the refrigerant and the flow direction of the coolant.

Under the condition that the third pump 142 is turned on and the first port a and the fourth port D are in the on state, the third pump 142 may pump the coolant that has been heated after flowing through the third heat exchanging device 115 into the radiator 134, so as to heat the radiator 134 and thus implement deicing of the radiator 134.

Referring to fig. 11, in some embodiments, the water-water heat exchanger 137 may not be disposed in the thermal management system 100, but the water-water heat exchanger 137 may be replaced by a second four-way valve 143, where the second four-way valve 143 includes an eighth port H, a ninth port I, a tenth port J, and an eleventh port K, the eighth port H connects the first warm air core 135 and the second pump 141, the ninth port I connects the third port C of the first four-way valve 133, the tenth port J connects the fourth heat exchanging device 126, and the eleventh port K connects the second warm air core 136.

Thus, the battery 132 can be cooled or the battery 132 can be heated by different connection modes of the four valve ports of the second four-way valve 143, and the structure is simple.

It is understood that when the water-water heat exchanger 137 is replaced by the second four-way valve 143, the flow direction and the operation principle of the refrigerant and the cooling liquid in each operation mode of the thermal management system 100 are similar to those of the water-water heat exchanger 137, and thus the description thereof is omitted.

Referring to fig. 12, in some embodiments, the first circulation assembly 11 may not include the third heat exchange device 115, but the third heat exchange device 115 is replaced by an outdoor evaporator 117, and the outdoor evaporator 117 is connected to the first expansion valve 114 and the compressor. It is understood that when the outdoor evaporator 117 is used to replace the third heat exchanging device 115, the flow direction and the operation principle of the refrigerant and the cooling liquid in each operation mode of the thermal management system 100 are similar to those of the third heat exchanging device 115, and thus the description thereof is omitted.

Referring to fig. 13, a vehicle 1000 according to an embodiment of the present disclosure includes a vehicle body 200 and the thermal management system 100 according to any of the embodiments described above, where the thermal management system 100 is mounted on the vehicle body 200. Specifically, the vehicle 1000 may be a hybrid vehicle or an electric vehicle, and is not particularly limited.

In the vehicle 1000 according to the embodiment of the present application, under different working conditions, the operating states of the first circulation component 11 and/or the second circulation component 12 of the thermal management system 100 and the states of the other elements in the thermal management system 100 may be controlled according to actual requirements, and heat exchange is performed between the refrigerant in the first circulation component 11 and/or the second circulation component 12 and the coolant in the thermal management system 100, so as to achieve functions of heating the passenger compartment, cooling the battery 132 or heating and insulating the battery 132, dehumidifying the passenger compartment, and optimize energy consumption of the thermal management system 100 in all seasons.

The first circulation assembly 11 can be used for cooling the vehicle 1000, the second circulation assembly 12 can be used for heating the vehicle 1000, and the thermal management system 100 does not reduce energy efficiency of the cooling and heating modes under the condition that the cooling and heating modes of the vehicle 1000 are compatible, so that efficient operation of the thermal management system 100 in all seasons is realized.

Furthermore, it should be noted that the above description is only exemplary of several modes that can be realized by the thermal management system 100 in the embodiments of the present application. It is understood that the thermal management system 100 according to the embodiment of the present application may also implement other modes than the above-mentioned modes by controlling the first circulation assembly 11, the second circulation assembly 12 and the rest of the components in different states, for example, the natural heat dissipation of the driving component 139 of the vehicle 1000 may be implemented, and thus, will not be described in detail.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: numerous changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims

1. A thermal management system for a vehicle, comprising:

2. The thermal management system of claim 1, further comprising a first pump, a battery, a first four-way valve, and a water-to-water heat exchanger, wherein the first four-way valve comprises a first port, a second port, a third port, and a fourth port, wherein the first port is connected to the third heat exchange device, the second port is connected to the first pump, the third port is connected to the water-to-water heat exchanger, the fourth port is connected to the third heat exchange device, the battery connects the first pump and the fourth heat exchange device, and the fourth heat exchange device is connected to the water-to-water heat exchanger;

when the first compressor is closed, the second compressor is opened, the second expansion valve is closed, the third expansion valve is opened, the first pump is opened, and the second valve port and the third valve port are in a conducting state,

3. The thermal management system of claim 1, further comprising a first pump, a battery, a first four-way valve, and a water-to-water heat exchanger, wherein the first four-way valve comprises a first port, a second port, a third port, and a fourth port, wherein the first port is connected to the third heat exchange device, the second port is connected to the first pump, the third port is connected to the water-to-water heat exchanger, the fourth port is connected to the third heat exchange device, the battery connects the first pump and the fourth heat exchange device, and the fourth heat exchange device is connected to the water-to-water heat exchanger;

the refrigerant flowing out of the second compressor passes through the condenser, the second expansion valve and the evaporator, so that the evaporator cools a passenger compartment of the vehicle;

4. The thermal management system of claim 1, comprising a first heater core, a second heater core, a water-to-water heat exchanger, a three-way valve, and a second pump, wherein the first heater core connects the water-to-water heat exchanger and the first heat exchange device, the second heater core connects the water-to-water heat exchanger and the second heat exchange device, the water-to-water heat exchanger connects the fourth heat exchange device, the three-way valve comprises a fifth valve port, a sixth valve port, and a seventh valve port, the fifth valve port connects with the first heat exchange device, the seventh valve port connects with the second heat exchange device, and the second pump connects the sixth valve port, the second heater core, and the water-to-water heat exchanger;

5. The thermal management system of claim 4, further comprising a first four-way valve, a first pump, and a battery, the first four-way valve comprising a first port, a second port, a third port, and a fourth port, the first port in communication with the third heat exchanging device, the second port in communication with the first pump, the third port in communication with the water-to-water heat exchanger, the fourth port in communication with the third heat exchanging device, the battery connecting the fourth heat exchanging device and the first pump;

the second pump drives the cooling liquid of the second heat exchange device to be conveyed to the water-water heat exchanger through the second warm air core so as to heat the cooling liquid in the water-water heat exchanger;

6. The thermal management system of claim 5, wherein with the first compressor open, the second compressor closed, the first expansion valve open, the first pump open, the second port and the third port in a conducting state, and the sixth port and the seventh port and the fifth port in a conducting state,

7. The thermal management system of claim 5, wherein with the first compressor open, the second compressor open, the first expansion valve open, the second expansion valve closed, the third expansion valve open, the first pump open, the second port in a conductive state with the third port, the fifth port and the sixth port in a conductive state, and the seventh port and the sixth port in a disconnected state,

8. The thermal management system of claim 5, wherein when the first compressor is open, the second compressor is open, the first expansion valve is open, the second expansion valve is open, the third expansion valve is closed, the first pump is open, the second pump is open, and both the sixth port and the seventh port are in a conductive state with the fifth port,

the refrigerant flowing out of the second compressor sequentially passes through the condenser, the second expansion valve and the evaporator so that the evaporator dehumidifies the passenger compartment;

9. The thermal management system of claim 1, comprising a first pump, a third pump, a battery, a first four-way valve, a driving component, a radiator, and a water-water heat exchanger, wherein the first four-way valve comprises a first valve port, a second valve port, a third valve port, and a fourth valve port, the first valve port is connected to the radiator, the second valve port is connected to the first pump, the third valve port is connected to the water-water heat exchanger, the fourth valve port is connected to the third pump, the driving component is connected to the third heat exchange device and the third pump, the radiator is connected to the third heat exchange device, the battery is connected to the first pump and the fourth heat exchange device, and the water-water heat exchanger is connected to the fourth heat exchange device;

10. The thermal management system of claim 1, comprising a third pump, a first four-way valve, a drive component, and a heat sink, the first four-way valve comprising a first port and a fourth port, the first port connected to the heat sink, the fourth port connected to the third pump, the drive component connected to the third heat exchange device, the third heat exchange device connected to the heat sink;

11. A vehicle comprising a body and the thermal management system of any of claims 1-10, the thermal management system being mounted on the body.