Thermal management system for vehicle

Abstract

The invention belongs to the technical field of thermal management systems, and discloses a thermal management system for a vehicle. The thermal management system for the vehicle comprises a compressor, a first heat exchanger, a water-cooling condenser, a second heat exchanger, a battery cooler, a throttling valve and an integrated valve terminal. The integrated valve terminal comprises a valve assembly and a flow channel set, and the flow channel set is used for communicating valves in the valve assembly and communicating the valves in the valve assembly with an inlet or an outlet of the integrated valve terminal. The valve assembly and the flow channel set are integrated, the flow direction of refrigerants is controlled through on-off of the valve assembly, and different refrigerant circulation loops are formed to achieve different functions such as single passenger compartment refrigeration, single battery refrigeration, simultaneous refrigeration of a passenger compartment and a battery and passenger compartment heating. The thermal management system for the vehicle is diversified in function and high in integration level; and the space utilization rate and the valve assembly rate are high.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal management systems, and in particular to a thermal management system for a vehicle. Background Art

[0002] With the development of new energy vehicles, the requirements for new energy vehicle air conditioning are getting higher and higher. Due to the limitations of battery technology development and the short board of driving range, energy saving and high efficiency of automobile air conditioning systems have become the primary consideration. Heat pump air conditioners can take into account the heating effect and driving range of new energy vehicles and are widely used. In order to increase the functional diversity of heat pump systems, such as cooling and heating, a variety of valves are required to control the circuit, such as solenoid valves, stop valves and expansion valves. However, the more valves in the system and the more connecting pipes, the more unfavorable it is for space layout and vehicle assembly, which leads to low space utilization and low assembly efficiency.

[0003] Therefore, there is an urgent need to propose a vehicle thermal management system to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a vehicle thermal management system, which has diversified functions, high integration, high space utilization and high valve assembly rate.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A vehicle thermal management system includes a compressor, a first heat exchanger, a water-cooled condenser, a second heat exchanger, a battery cooler, a throttle valve and an integrated valve island, wherein the integrated valve island includes a valve assembly and a flow channel group, wherein the flow channel group is used for communication between valve components in the valve assembly and communication between valve components in the valve assembly and an inlet or outlet of the integrated valve island, wherein the valve assembly and the flow channel group are integrated into one body, and the flow direction of the refrigerant is controlled by turning the valve assembly on and off, wherein:

[0007] When cooling a single passenger compartment, the refrigerant flows from the compressor to the first heat exchanger, the integrated valve island, the water-cooled condenser, the integrated valve island, the throttle valve and the second heat exchanger in sequence, and the refrigerant flows from the second heat exchanger back to the compressor, thereby circulating;

[0008] When cooling a single battery, the refrigerant flows out of the compressor and sequentially passes through the first heat exchanger, the integrated valve island, the water-cooled condenser, the integrated valve island and the battery cooler. The refrigerant flows out of the battery cooler and returns to the compressor, thereby circulating;

[0009] When the passenger compartment and the battery are cooled at the same time, the refrigerant flows out of the compressor and sequentially passes through the first heat exchanger, the integrated valve island, the water-cooled condenser and the integrated valve island. The refrigerant is divided into two parts in the integrated valve island, one part flows sequentially through the throttle valve and the second heat exchanger and returns to the compressor, and the other part flows through the battery cooler and returns to the compressor, thereby circulating;

[0010] When the passenger compartment is heated, the refrigerant flows out of the compressor and sequentially passes through the first heat exchanger, the integrated valve island and the battery cooler. The refrigerant flows out of the battery cooler and returns to the compressor, thereby circulating.

[0011] As an optional technical solution for a vehicle thermal management system, the valve assembly includes a first solenoid valve, a second solenoid valve, a first check valve and an electronic expansion valve. The first solenoid valve, the water-cooled condenser and the first check valve are sequentially connected in series and then connected in parallel with the second solenoid valve, and the first solenoid valve is located upstream of the first check valve, and the electronic expansion valve is respectively connected in series with the first check valve and the second solenoid valve, wherein:

[0012] When cooling a single passenger compartment, the first solenoid valve is opened, the second solenoid valve is closed, the electronic expansion valve is closed, and the throttle valve is opened. The refrigerant flows out of the compressor and sequentially passes through the first heat exchanger, the first solenoid valve, the water-cooled condenser, the first one-way valve, the throttle valve, and the second heat exchanger. The refrigerant flows out of the second heat exchanger and returns to the compressor, thereby performing a cycle.

[0013] When cooling a single battery, the first solenoid valve is opened, the second solenoid valve is closed, the electronic expansion valve is opened, the throttle valve is closed, and the refrigerant flows out of the compressor and sequentially passes through the first heat exchanger, the first solenoid valve, the water-cooled condenser, the first one-way valve, the electronic expansion valve, and the battery cooler. The refrigerant flows out of the battery cooler and returns to the compressor, thereby circulating;

[0014] When the passenger compartment and the battery are cooled at the same time, the first solenoid valve is opened, the second solenoid valve is closed, the electronic expansion valve is opened, and the throttle valve is opened. The refrigerant flows out of the compressor and sequentially passes through the first heat exchanger, the first solenoid valve, and the water-cooled condenser. The refrigerant flows out of the first one-way valve and is divided into two parts. One part flows through the throttle valve and the second heat exchanger in sequence and returns to the compressor, and the other part flows through the electronic expansion valve and the battery cooler in sequence and returns to the compressor, thereby circulating.

[0015] When the passenger compartment is heated, the first solenoid valve is closed, the second solenoid valve is opened, the electronic expansion valve is opened, the throttle valve is closed, the refrigerant comes out of the compressor and flows through the first heat exchanger, the second solenoid valve, the electronic expansion valve and the battery cooler in sequence, and the refrigerant comes out of the battery cooler and returns to the compressor, thus circulating.

[0016] As an optional technical solution of the vehicle thermal management system, in the valve assembly, the first solenoid valve, the second solenoid valve and the first one-way valve are arranged in sequence along the first direction, the electronic expansion valve and the second solenoid valve are arranged at intervals along the second direction, and the integrated valve island further includes a first inlet, a second inlet, a first outlet, a second outlet and a third outlet; the first inlet is located at one end of the first solenoid valve close to the electronic expansion valve along the second direction, and the valve body inlet of the first solenoid valve and the valve body inlet of the second solenoid valve are both connected to the first inlet; the second inlet is located at one end of the first one-way valve away from the second solenoid valve along the first direction, and is connected to the valve body inlet of the first one-way valve; the first outlet is located at one end of the first solenoid valve along the third direction, and is connected to the valve body outlet of the first solenoid valve; the second outlet is located at one end of the electronic expansion valve along the second direction away from the second solenoid valve, and is connected to the valve body outlet of the electronic expansion valve; the third outlet is located at one end of the electronic expansion valve along the third direction, and is respectively connected to the valve body outlet of the first one-way valve and the valve body outlet of the second solenoid valve;

[0017] The first direction, the second direction and the third direction are perpendicular to each other.

[0018] As an optional technical solution for a vehicle thermal management system, the flow channel group includes a first flow channel, a second flow channel, a third flow channel, a fourth flow channel, a fifth flow channel, a sixth flow channel and a seventh flow channel; the first flow channel connects the valve body outlet of the first solenoid valve and the first outlet; the second flow channel connects the second inlet and the valve body inlet of the first one-way valve; the third flow channel connects the valve body inlet of the first solenoid valve and the valve body inlet of the second solenoid valve; the fourth flow channel connects the valve body outlet of the second solenoid valve and the valve body outlet of the first one-way valve; the fifth flow channel connects the fourth flow channel and the valve body inlet of the electronic expansion valve; the sixth flow channel connects the fourth flow channel and the second outlet; the seventh flow channel connects the valve body outlet of the electronic expansion valve and the third outlet.

[0019] As an optional technical solution for a vehicle thermal management system, the first solenoid valve is a normally open valve.

[0020] As an optional technical solution for the vehicle thermal management system, the second solenoid valve is a normally closed valve.

[0021] As an optional technical solution for the vehicle thermal management system, the integrated valve island further includes a base plate, and the valve assembly and the flow channel group are integrated on the base plate.

[0022] As an optional technical solution for a vehicle thermal management system, the vehicle thermal management system also includes a second one-way valve, which is connected in series with the second heat exchanger, and the second one-way valve is arranged downstream of the second heat exchanger, and the second one-way valve is connected in parallel with the battery cooler.

[0023] As an optional technical solution for the vehicle thermal management system, the throttle valve and the second heat exchanger are integrated into one body.

[0024] As an optional technical solution for the vehicle thermal management system, a fan is provided at the first heat exchanger.

[0025] Beneficial effects of the present invention:

[0026] The vehicle thermal management system provided by the present invention includes a compressor, a first heat exchanger, a water-cooled condenser, a second heat exchanger, a battery cooler, a throttle valve and an integrated valve island. The integrated valve island includes a valve assembly and a flow channel group. The flow channel group is used for the connection between the valve components in the valve assembly and the connection between the valve components in the valve assembly and the inlet or outlet of the integrated valve island. The flow direction of the refrigerant is controlled by the on-off of the valve assembly to form different refrigerant circulation loops to achieve different functions, such as realizing single passenger compartment refrigeration, single battery refrigeration, simultaneous refrigeration of the passenger compartment and the battery, and heating of the passenger compartment, with diversified functions; multiple refrigerant circulation loops are centrally arranged, with high integration and high working efficiency. The valve assembly and the flow channel group are integrated into one, which solves the spatial arrangement of the valve assembly connecting each branch and the assembly of each valve component in the valve assembly, and improves space utilization and assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of a vehicle thermal management system provided by the present invention;

[0028] Figure 2 It is a first structural schematic diagram of an integrated valve island in a vehicle thermal management system provided by an embodiment of the present invention;

[0029] Figure 3 It is a second structural schematic diagram of the integrated valve island in the vehicle thermal management system provided by the embodiment of the present invention;

[0030] Figure 4 is a first cross-sectional view of an integrated valve island in a vehicle thermal management system provided by an embodiment of the present invention;

[0031] Figure 5 It is a second cross-sectional view of the integrated valve island in the vehicle thermal management system provided by the embodiment of the present invention.

[0032] In the figure:

[0033] 100, integrated valve island; 111, first solenoid valve; 112, second solenoid valve; 113, first non-return valve; 114, electronic expansion valve; 115, first inlet; 116, second inlet; 117, first outlet; 118, second outlet; 119, third outlet; 121, first flow channel; 122, second flow channel; 123, third flow channel; 124, fourth flow channel; 125, fifth flow channel; 126, sixth flow channel; 127, seventh flow channel; 200, compressor; 300, first heat exchanger; 400, water-cooled condenser; 500, second heat exchanger; 600, battery cooler; 700, throttle valve; 800, second non-return valve. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] The invention provides a vehicle thermal management system, which has diversified functions, high integration, high space utilization and high valve component assembly rate.

[0039] Specific as Figure 1 As shown, the vehicle thermal management system includes a compressor 200, a first heat exchanger 300, a water-cooled condenser 400, a second heat exchanger 500, a battery cooler 600, a throttle valve 700 and an integrated valve island 100. The integrated valve island 100 includes a valve assembly and a flow channel group, and the flow channel group is used for the communication between the valve components in the valve assembly and the communication between the valve components in the valve assembly and the inlet or outlet of the integrated valve island 100. The valve assembly and the flow channel group are integrated into one body, and the flow direction of the refrigerant is controlled by the on-off of the valve assembly, wherein: when a single passenger compartment is cooled, the refrigerant comes out of the compressor 200 and flows through the first heat exchanger 300, the integrated valve island 100, the water-cooled condenser 400, the integrated valve island 100, the throttle valve 700 and the second heat exchanger 500 in sequence, and the refrigerant comes out of the second heat exchanger 500 and returns to the compressor 200, thereby circulating; when a single battery is cooled, the refrigerant comes out of the compressor 200 and flows through the first heat exchanger 300, the integrated valve island 100, the water-cooled condenser 400, the integrated valve island 100 and the battery cooler 600 in sequence, and the refrigerant comes out of the battery cooler 600 and returns to the compressor 20 0, and thus circulates; when the passenger compartment and the battery are cooled at the same time, the refrigerant comes out of the compressor 200 and flows through the first heat exchanger 300, the integrated valve island 100, the water-cooled condenser 400 and the integrated valve island 100 in sequence. The refrigerant is divided into two parts in the integrated valve island 100. One part flows through the throttle valve 700 and the second heat exchanger 500 in sequence and returns to the compressor 200, and the other part flows through the battery cooler 600 and returns to the compressor 200, and thus circulates; when the passenger compartment is heated, the refrigerant comes out of the compressor 200 and flows through the first heat exchanger 300, the integrated valve island 100 and the battery cooler 600 in sequence. The refrigerant comes out of the battery cooler 600 and returns to the compressor 200, and thus circulates.

[0040] Based on the above design, the integrated valve island 100 includes a valve assembly and a flow channel group. The flow channel group is used for the connection between the valve components in the valve assembly and the connection between the valve components in the valve assembly and the inlet or outlet of the integrated valve island 100. The flow direction of the refrigerant is controlled by the on-off of the valve assembly. On the one hand, the integrated valve island 100 can form different refrigerant circulation loops to realize different functions of the vehicle thermal management system, such as realizing the diversification of single passenger compartment cooling, single battery cooling, simultaneous cooling of the passenger compartment and battery, and heating of the passenger compartment; on the other hand, the integrated valve island 100 can centrally set multiple refrigerant circulation loops, with high integration and high working efficiency. Specifically, when cooling a single passenger compartment, the compressor 200 is started, and the refrigerant enters the compressor 200 and is compressed to form a high-temperature and high-pressure gaseous refrigerant. The high-temperature and high-pressure gaseous refrigerant is discharged from the compressor 200 and passes through the first heat exchanger 300 (at this time, the first heat exchanger 300 is not working and only serves as a pipeline) to enter the integrated valve island 100, and after passing through the integrated valve island 100, it comes out and enters the water-cooled condenser 400 to dissipate heat to form a high-temperature and high-pressure liquid refrigerant. The high-temperature and high-pressure liquid refrigerant flows through the integrated valve island 100 again and comes out and enters the throttle valve 700 to throttle to form a low-temperature and low-pressure liquid refrigerant. The low-temperature and low-pressure liquid refrigerant then evaporates and absorbs heat through the second heat exchanger 500 (to achieve cooling of the passenger compartment) to form a gaseous refrigerant. The gaseous refrigerant is discharged from the second heat exchanger 500 and returns to the compressor 200, and the cycle is repeated in sequence to achieve cooling of the passenger compartment. When the battery is cooled, the compressor 200 is started, and the refrigerant enters the compressor 200 and is compressed to form a high-temperature and high-pressure gaseous refrigerant. The high-temperature and high-pressure gaseous refrigerant is discharged from the compressor 200 and passes through the first heat exchanger 300 (at this time, the first heat exchanger 300 does not work and only acts as a pipeline) to enter the integrated valve island 100, and then passes through the integrated valve island 100 and enters the water-cooled condenser 400 to dissipate heat to form a high-temperature and high-pressure liquid refrigerant. The high-temperature and high-pressure liquid refrigerant flows through the integrated valve island 100 again, and is throttled in the integrated valve island 100 to form a low-temperature and low-pressure liquid refrigerant. Then, the low-temperature and low-pressure liquid refrigerant comes out of the integrated valve island 100 and then evaporates and absorbs heat through the battery cooler 600 (to achieve battery cooling) to form a gaseous refrigerant. The gaseous refrigerant is discharged from the battery cooler 600 and returns to the compressor 200, and the battery cooling is achieved in sequence;When the passenger compartment and the battery are cooled at the same time, the compressor 200 is started, and the refrigerant enters the compressor 200 and is compressed to form a high-temperature and high-pressure gaseous refrigerant. The high-temperature and high-pressure gaseous refrigerant is discharged from the compressor 200 and passes through the first heat exchanger 300 (at this time, the first heat exchanger 300 does not work and only acts as a pipeline) to enter the integrated valve island 100. After passing through the integrated valve island 100, it comes out and enters the water-cooled condenser 400 to dissipate heat to form a high-temperature and high-pressure liquid refrigerant. The high-temperature and high-pressure liquid refrigerant flows through the integrated valve island again. 100, the high-temperature and high-pressure liquid refrigerant is divided into two parts in the integrated valve island 100. One part of the high-temperature and high-pressure liquid refrigerant comes out of the integrated valve island 100 and enters the throttle valve 700 to form a low-temperature and low-pressure liquid refrigerant. The low-temperature and low-pressure liquid refrigerant then evaporates and absorbs heat (to achieve refrigeration of the passenger compartment) through the second heat exchanger 500 to form a gaseous refrigerant. The gaseous refrigerant is discharged from the second heat exchanger 500 and returns to the compressor 200. The other part of the high-temperature and high-pressure liquid refrigerant is discharged from the integrated valve island 100. 00 is throttled to form a low-temperature and low-pressure liquid refrigerant, and then the low-temperature and low-pressure liquid refrigerant comes out of the integrated valve island 100 and evaporates and absorbs heat through the battery cooler 600 (to achieve battery cooling) to form a gaseous refrigerant, and the gaseous refrigerant is discharged from the battery cooler 600 and returns to the compressor 200, and the cycle is in sequence to achieve simultaneous cooling of the passenger compartment and the battery; when the passenger compartment is heated, the compressor 200 is started, and the refrigerant enters the compressor 200 and is compressed to form a high-temperature and high-pressure gaseous refrigerant, and the high-temperature and high-pressure gaseous refrigerant is discharged from the compressor 200 and dissipates heat through the first heat exchanger 300 (to achieve passenger compartment heating) to form a high-temperature and high-pressure liquid refrigerant, and the high-temperature and high-pressure liquid refrigerant enters the integrated valve island 100 and is throttled to form a low-temperature and low-pressure liquid refrigerant, and then the low-temperature and low-pressure liquid refrigerant comes out of the integrated valve island 100 and evaporates and absorbs heat through the battery cooler 600 to form a gaseous refrigerant, and the gaseous refrigerant is discharged from the battery cooler 600 and returns to the compressor 200, and the cycle is in sequence to achieve heating of the passenger compartment. ;

[0041] In addition, the valve assembly and the flow channel group are integrated into one body, which solves the problem of spatial arrangement of the valve assembly connecting various branches and assembly of various valve components in the valve assembly, thereby improving space utilization and assembly efficiency.

[0042] It should be noted that the vehicle thermal management system uses a water-cooled condenser 400 instead of an outdoor condenser, which can achieve condensation and heat dissipation of the refrigerant and make the system structure more compact.

[0043] Optionally, the integrated valve island 100 further includes a bottom plate, and the valve assembly and the flow channel group are integrated on the bottom plate to facilitate fixing the valve assembly and the flow channel group.

[0044] Optionally, continue as Figure 1As shown, the valve assembly includes a first solenoid valve 111, a second solenoid valve 112, a first check valve 113 and an electronic expansion valve 114. The first solenoid valve 111, the water-cooled condenser 400 and the first check valve 113 are sequentially connected in series and then connected in parallel with the second solenoid valve 112. The first solenoid valve 111 is located upstream of the first check valve 113. The electronic expansion valve 114 is connected in series with the first check valve 113 and the second solenoid valve 112, respectively. When a single passenger compartment is cooled, the first solenoid valve 111 is opened, the second solenoid valve 112 is closed, the electronic expansion valve 114 is closed, and the throttle valve When the first electromagnetic valve 111 is opened, the second electromagnetic valve 112 is closed, the electronic expansion valve 114 is opened, the throttle valve 700 is closed, and the refrigerant from the compressor 200 flows through the first heat exchanger 300, the first electromagnetic valve 111, the water-cooled condenser 400, the first non-return valve 113, the throttle valve 700 and the second heat exchanger 500 in sequence. The refrigerant flows out of the second heat exchanger 500 and returns to the compressor 200, and the cycle is repeated. When the single battery is refrigerated, the first electromagnetic valve 111 is opened, the second electromagnetic valve 112 is closed, the electronic expansion valve 114 is opened, and the throttle valve 700 is closed. The refrigerant from the compressor 200 flows through the first heat exchanger 300, the first electromagnetic valve 111, the water-cooled condenser 400, the first non-return valve 113, the throttle valve 700 and the second heat exchanger 500 in sequence. condenser 400, the first one-way valve 113, the electronic expansion valve 114 and the battery cooler 600, the refrigerant comes out of the battery cooler 600 and returns to the compressor 200, and the cycle is repeated; when the passenger compartment and the battery are cooled at the same time, the first solenoid valve 111 is opened, the second solenoid valve 112 is closed, the electronic expansion valve 114 is opened, and the throttle valve 700 is opened. The refrigerant comes out of the compressor 200 and flows through the first heat exchanger 300, the first solenoid valve 111 and the water-cooled condenser 400 in sequence. The refrigerant comes out of the first one-way valve 113 and is divided into two parts, one part of which flows through the throttle valve 70 in sequence. When the passenger compartment is heated, the first solenoid valve 111 is closed, the second solenoid valve 112 is opened, the electronic expansion valve 114 is opened, the throttle valve 700 is closed, and the refrigerant flows out of the compressor 200 and flows through the first heat exchanger 300, the second solenoid valve 112, the electronic expansion valve 114 and the battery cooler 600 in sequence, and the refrigerant flows out of the battery cooler 600 and returns to the compressor 200, thus circulating.

[0045] In this embodiment, the first solenoid valve 111 is a normally open valve, and the second solenoid valve 112 is a normally closed valve. Both the normally open valve and the normally closed valve are prior art and will not be described in detail here.

[0046] Furthermore, if Figure 2 and Figure 3As shown in the figure, in the valve assembly, the first solenoid valve 111, the second solenoid valve 112 and the first one-way valve 113 are arranged in sequence along the first direction, the electronic expansion valve 114 and the second solenoid valve 112 are arranged at intervals along the second direction, and the integrated valve island 100 also includes a first inlet 115, a second inlet 116, a first outlet 117, a second outlet 118 and a third outlet 119; the first inlet 115 is located at one end of the first solenoid valve 111 close to the electronic expansion valve 114 along the second direction, and the valve body inlet of the first solenoid valve 111 and the valve body inlet of the second solenoid valve 112 are both connected to the first inlet 115; the second inlet 116 is located at the first one-way valve 113 away from the second one-way valve 114 along the first direction The first outlet 117 is located at one end of the first solenoid valve 111 along the third direction and is connected to the valve body outlet of the first solenoid valve 111; the second outlet 118 is located at one end of the electronic expansion valve 114 away from the second solenoid valve 112 along the second direction and is connected to the valve body outlet of the electronic expansion valve 114; the third outlet 119 is located at one end of the electronic expansion valve 114 along the third direction and is connected to the valve body outlet of the first one-way valve 113 and the valve body outlet of the second solenoid valve 112 respectively; the first direction (direction A in the figure), the second direction (direction B in the figure) and the third direction (direction C in the figure) are perpendicular to each other. The valve assembly not only integrates the various valve components into one body, but also reasonably arranges the various valve components of the integrated valve island 100 and the inlet and outlet of the integrated valve island 100, so that the structure of the integrated valve island 100 is more compact.

[0047] Furthermore, if Figure 5 As shown, the flow channel group includes a first flow channel 121, a second flow channel 122, a third flow channel 123, a fourth flow channel 124, a fifth flow channel 125, a sixth flow channel 126 and a seventh flow channel 127. The first flow channel 121 connects the valve body outlet of the first solenoid valve 111 and the first outlet 117; the second flow channel 122 connects the second inlet 116 and the valve body inlet of the first check valve 113; the third flow channel 123 connects the valve body inlet of the first solenoid valve 111 and the valve body inlet of the second solenoid valve 112; the fourth flow channel 124 connects the valve body outlet of the second solenoid valve 112 and the valve body outlet of the first check valve 113; the fifth flow channel 125 connects the fourth flow channel 124 and the valve body inlet of the electronic expansion valve 114; the sixth flow channel 126 connects the fourth flow channel 124 and the second outlet 118; the seventh flow channel 127 connects the valve body outlet of the electronic expansion valve 114 and the third outlet 119.

[0048] Specifically, when a single passenger cabin is cooled, the refrigerant flows through the compressor 200 and the first heat exchanger 300 in sequence, then enters the integrated valve island 100 from the first inlet 115, passes through the valve body of the first solenoid valve 111 and the first flow channel 121 in the integrated valve island 100 in sequence, then exits the integrated valve island 100 from the first outlet 117 and enters the water-cooled condenser 400, and enters the integrated valve island 100 again through the second inlet 116 after exiting the water-cooled condenser 400, passes through the second flow channel 122, the first one-way valve 113, the fourth flow channel 124, the fifth flow channel 125 and the sixth flow channel 126 in the integrated valve island 100 in sequence, and then exits from the second outlet 117. 8 out of the integrated valve island 100, and finally flows through the second heat exchanger 500 in sequence back to the compressor 200, thus circulating; when the single battery is refrigerated, the refrigerant flows through the compressor 200 and the first heat exchanger 300 in sequence, and then enters the integrated valve island 100 from the first inlet 115, passes through the valve body of the first solenoid valve 111 and the first flow channel 121 in the integrated valve island 100 in sequence, and then enters the water-cooled condenser 400 after exiting the integrated valve island 100 from the first outlet 117, and enters the integrated valve island 100 again through the second inlet 116 after coming out of the water-cooled condenser 400, and passes through the second flow channel 122, the first check valve 113, The fourth flow channel 124, the fifth flow channel 125, the electronic expansion valve 114 and the seventh flow channel 127, and then out of the integrated valve island 100 from the third outlet 119, and finally flow through the battery cooler 600 in sequence back to the compressor 200, and this cycle is repeated; when the passenger compartment and the battery are cooled at the same time, the refrigerant flows through the compressor 200 and the first heat exchanger 300 in sequence, and then enters the integrated valve island 100 from the first inlet 115, passes through the valve body of the first solenoid valve 111 and the first flow channel 121 in the integrated valve island 100 in sequence, and then flows out of the integrated valve island 100 from the first outlet 117 and enters the water-cooled condenser 400, and then flows out of the water-cooled condenser 400 through the first outlet 117. The second inlet 116 enters the integrated valve island 100 again, and passes through the second flow channel 122, the first check valve 113, the fourth flow channel 124 and the fifth flow channel 125 in the integrated valve island 100 in sequence. The refrigerant is divided into two parts in the fifth flow channel 125. One part enters the sixth flow channel 126, and then exits the integrated valve island 100 from the second outlet 118, and then flows through the throttle valve 700 and the second heat exchanger 500 in sequence to return to the compressor 200. The other part flows through the electronic expansion valve 114 and the seventh flow channel 127 in sequence, and then exits the integrated valve island 100 from the third outlet 119, and finally flows through the battery cooler 600 to return to the compressor 200, and the cycle is repeated.When the passenger compartment is heated, the refrigerant flows through the compressor 200 and the first heat exchanger 300 in sequence, then enters the integrated valve island 100 from the first inlet 115, flows through the third flow channel 123, the second solenoid valve 112, the fourth flow channel 124, the fifth flow channel 125, the electronic expansion valve 114 and the seventh flow channel 127 in the integrated valve island 100 in sequence, then leaves the integrated valve island 100 from the second outlet 118, and finally returns to the compressor 200 through the battery cooler 600, thus completing the cycle. ;

[0049] Optionally, the vehicle thermal management system further includes a second one-way valve 800 , which is connected in series with the second heat exchanger 500 , and the second one-way valve 800 is arranged downstream of the second heat exchanger 500 , and the second one-way valve 800 is connected in parallel with the battery cooler 600 .

[0050] Optionally, the throttle valve 700 is integrated with the second heat exchanger 500 to further save space.

[0051] Optionally, a fan is provided at the first heat exchanger 300. When the first heat exchanger 300 is working, the fan works to promote heat exchange between the refrigerant in the first heat exchanger 300 and the air, thereby improving the heat exchange efficiency.

[0052] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A thermal management system for a vehicle, characterized in that: The invention comprises a compressor (200), a first heat exchanger (300), a water-cooled condenser (400), a second heat exchanger (500), a battery cooler (600), a throttle valve (700) and an integrated valve island (100), wherein the integrated valve island (100) comprises a valve assembly and a flow channel group, wherein the flow channel group is used for communication between valve components in the valve assembly and for communication between valve components in the valve assembly and an inlet or outlet of the integrated valve island (100), wherein the valve assembly and the flow channel group are integrated into one body, and the flow direction of the refrigerant is controlled by switching the valve assembly on and off, wherein: When cooling a single passenger cabin, the refrigerant flows out of the compressor (200) and sequentially passes through the first heat exchanger (300), the integrated valve island (100), the water-cooled condenser (400), the integrated valve island (100), the throttle valve (700) and the second heat exchanger (500), and the refrigerant flows out of the second heat exchanger (500) and returns to the compressor (200), thereby circulating; When cooling a single battery, the refrigerant flows out of the compressor (200) and sequentially passes through the first heat exchanger (300), the integrated valve island (100), the water-cooled condenser (400), the integrated valve island (100) and the battery cooler (600), and the refrigerant flows out of the battery cooler (600) and returns to the compressor (200), thereby circulating; When the passenger compartment and the battery are cooled simultaneously, the refrigerant flows out of the compressor (200) and sequentially passes through the first heat exchanger (300), the integrated valve island (100), the water-cooled condenser (400) and the integrated valve island (100); the refrigerant is divided into two parts in the integrated valve island (100); one part flows sequentially through the throttle valve (700) and the second heat exchanger (500) and returns to the compressor (200); the other part flows through the battery cooler (600) and returns to the compressor (200), thereby circulating; When the passenger compartment is heated, the refrigerant flows out of the compressor (200) and sequentially passes through the first heat exchanger (300), the integrated valve island (100) and the battery cooler (600), and the refrigerant flows out of the battery cooler (600) and returns to the compressor (200), thereby circulating.

2. The vehicle thermal management system according to claim 1, characterized in that: The valve assembly comprises a first solenoid valve (111), a second solenoid valve (112), a first check valve (113) and an electronic expansion valve (114); the first solenoid valve (111), the water-cooled condenser (400) and the first check valve (113) are sequentially connected in series and then connected in parallel with the second solenoid valve (112); the first solenoid valve (111) is located upstream of the first check valve (113); the electronic expansion valve (114) is respectively connected in series with the first check valve (113) and the second solenoid valve (112); wherein: When cooling a single passenger compartment, the first solenoid valve (111) is opened, the second solenoid valve (112) is closed, the electronic expansion valve (114) is closed, and the throttle valve (700) is opened. The refrigerant flows out of the compressor (200) and sequentially passes through the first heat exchanger (300), the first solenoid valve (111), the water-cooled condenser (400), the first non-return valve (113), the throttle valve (700), and the second heat exchanger (500). The refrigerant flows out of the second heat exchanger (500) and returns to the compressor (200), thereby performing a cycle. When the single battery is cooled, the first solenoid valve (111) is opened, the second solenoid valve (112) is closed, the electronic expansion valve (114) is opened, the throttle valve (700) is closed, and the refrigerant comes out of the compressor (200) and flows through the first heat exchanger (300), the first solenoid valve (111), the water-cooled condenser (400), the first one-way valve (113), the electronic expansion valve (114) and the battery cooler (600) in sequence. The refrigerant comes out of the battery cooler (600) and returns to the compressor (200), thereby circulating; When the passenger compartment and the battery are cooled simultaneously, the first solenoid valve (111) is opened, the second solenoid valve (112) is closed, the electronic expansion valve (114) is opened, the throttle valve (700) is opened, the refrigerant flows out of the compressor (200) and sequentially passes through the first heat exchanger (300), the first solenoid valve (111) and the water-cooled condenser (400), and the refrigerant flows out of the first check valve (113) and is divided into two parts, one part flows through the throttle valve (700) and the second heat exchanger (500) in sequence and returns to the compressor (200), and the other part flows through the electronic expansion valve (114) and the battery cooler (600) in sequence and returns to the compressor (200), thereby forming a cycle; When the passenger compartment is heated, the first solenoid valve (111) is closed, the second solenoid valve (112) is opened, the electronic expansion valve (114) is opened, the throttle valve (700) is closed, and the refrigerant flows out of the compressor (200) and sequentially passes through the first heat exchanger (300), the second solenoid valve (112), the electronic expansion valve (114) and the battery cooler (600). The refrigerant flows out of the battery cooler (600) and returns to the compressor (200), thereby circulating.

3. The vehicle thermal management system according to claim 2, characterized in that: In the valve assembly, the first solenoid valve (111), the second solenoid valve (112) and the first check valve (113) are arranged in sequence along a first direction, and the electronic expansion valve (114) and the second solenoid valve (112) are arranged at intervals along a second direction. The integrated valve island (100) further comprises a first inlet (115), a second inlet (116), a first outlet (117), a second outlet (118) and a third outlet (119); the first inlet (115) is located at one end of the first solenoid valve (111) close to the electronic expansion valve (114) along the second direction, and the valve body inlet of the first solenoid valve (111) and the valve body inlet of the second solenoid valve (112) are both connected to the first inlet (115); the second inlet (116) The first outlet (117) is located at one end of the first one-way valve (113) away from the second solenoid valve (112) along the first direction, and is communicated with the valve body inlet of the first one-way valve (113); the first outlet (117) is located at one end of the first solenoid valve (111) along the third direction, and is communicated with the valve body outlet of the first solenoid valve (111); the second outlet (118) is located at one end of the electronic expansion valve (114) away from the second solenoid valve (112) along the second direction, and is communicated with the valve body outlet of the electronic expansion valve (114); the third outlet (119) is located at one end of the electronic expansion valve (114) along the third direction, and is communicated with the valve body outlet of the first one-way valve (113) and the valve body outlet of the second solenoid valve (112), respectively; The first direction, the second direction and the third direction are perpendicular to each other.

4. The vehicle thermal management system according to claim 3, characterized in that: The flow channel group comprises a first flow channel (121), a second flow channel (122), a third flow channel (123), a fourth flow channel (124), a fifth flow channel (125), a sixth flow channel (126) and a seventh flow channel (127); the first flow channel (121) is connected to the valve body outlet of the first solenoid valve (111) and the first outlet (117); the second flow channel (122) is connected to the second inlet (116) and the valve body inlet of the first one-way valve (113); the third flow channel (123) is connected to the valve body inlet of the first solenoid valve (111); The fourth flow channel (124) is connected to the valve body outlet of the second solenoid valve (112) and the valve body outlet of the first one-way valve (113); the fifth flow channel (125) is connected to the fourth flow channel (124) and the valve body inlet of the electronic expansion valve (114); the sixth flow channel (126) is connected to the fourth flow channel (124) and the second outlet (118); and the seventh flow channel (127) is connected to the valve body outlet of the electronic expansion valve (114) and the third outlet (119).

5. The vehicle thermal management system according to claim 2, characterized in that: The first solenoid valve (111) is a normally open valve.

6. The vehicle thermal management system according to claim 2, characterized in that: The second solenoid valve (112) is a normally closed valve.

7. The vehicle thermal management system according to claim 1, characterized in that: The integrated valve island (100) further comprises a bottom plate, and the valve assembly and the flow channel group are integrated and arranged on the bottom plate.

8. The vehicle thermal management system according to claim 1, characterized in that: The vehicle thermal management system further comprises a second one-way valve (800), wherein the second one-way valve (800) and the second heat exchanger (500) are connected in series, and the second one-way valve (800) is arranged downstream of the second heat exchanger (500), and the second one-way valve (800) is connected in parallel with the battery cooler (600).

9. The vehicle thermal management system according to claim 1, characterized in that: The throttle valve (700) and the second heat exchanger (500) are integrated into one body.

10. The vehicle thermal management system according to claim 1, characterized in that: The first heat exchanger (300) is provided with a fan.

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