CN214112339U

CN214112339U - Thermal management system

Info

Publication number: CN214112339U
Application number: CN202021763398.1U
Authority: CN
Inventors: 董军启; 其他发明人请求不公开姓名
Original assignee: Sanhua Holding Group Co Ltd
Current assignee: Sanhua Holding Group Co Ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-09-03
Anticipated expiration: 2030-08-21

Abstract

The utility model discloses a heat management system includes second heat management unit, and second heat management unit includes first governing valve, first expansion valve, first heat exchanger and first double runner heat exchanger, and when first heat exchanger heated, the refrigerant got into second heat management unit by first governing valve, and when first heat exchanger refrigerates, the refrigerant got into by the second runner of first double runner heat exchanger second heat management unit, relatively cold refrigerant and relatively hot refrigerant are at first double runner heat exchanger heat exchange, make the relative step-down of refrigerant temperature that gets into first heat exchanger like this, make the difference in temperature of the import and the export of first heat exchanger reduce, have improved the temperature homogeneity of first heat exchanger relatively.

Description

Thermal management system

Technical Field

The utility model relates to a heat management technical field, concretely relates to heat management system.

Background

The thermal management system for the vehicle comprises a heat exchanger capable of adjusting the temperature of the battery, and the temperature uniformity has a large influence on the performance of the battery, so that new requirements are put forward on the thermal management system to ensure that the battery works in a relatively uniform temperature environment.

SUMMERY OF THE UTILITY MODEL

It is an object of the present application to provide a thermal management system to facilitate improved temperature uniformity of a heat exchanger.

One embodiment of the present disclosure provides a thermal management system comprising a refrigerant system including a compressor, a first thermal management unit, and a first outdoor heat exchanger, the thermal management system including a second thermal management unit, refrigerant discharged from the compressor being capable of exchanging heat in the first thermal management unit and the second thermal management unit, refrigerant discharged from the first outdoor heat exchanger also being capable of exchanging heat in the first thermal management unit and the second thermal management unit;

the second thermal management unit comprises a first regulating valve, a first expansion valve, a first heat exchanger and a first dual-channel heat exchanger, wherein the first regulating valve, the first expansion valve, a refrigerant channel of the first heat exchanger and the first dual-channel heat exchanger are part of the refrigerant system;

the first port of the refrigerant flow channel of the first heat exchanger is communicated with the first regulating valve through the first flow channel of the first double-flow-channel heat exchanger, the second port of the refrigerant flow channel of the first heat exchanger can be communicated with the second flow channel of the first double-flow-channel heat exchanger through the first expansion valve, when the first heat exchanger is used for heating, the refrigerant enters the second heat management unit through the first regulating valve, and when the first heat exchanger is used for refrigerating, the refrigerant enters the second heat management unit through the second flow channel of the first double-flow-channel heat exchanger.

The heat management system comprises the second heat management unit, the second heat management unit comprises the first adjusting valve, the first expansion valve, the first heat exchanger and the first dual-channel heat exchanger, when the first heat exchanger heats, the refrigerant enters the second heat management unit through the first adjusting valve, when the first heat exchanger refrigerates, the refrigerant enters the second heat management unit through the second channel of the first dual-channel heat exchanger, and the relatively cold refrigerant and the relatively hot refrigerant exchange heat in the first dual-channel heat exchanger, so that the temperature of the refrigerant entering the first heat exchanger becomes low relatively, the temperature difference between the inlet and the outlet of the first heat exchanger is reduced, and the temperature uniformity of the first heat exchanger is improved relatively.

Drawings

FIG. 1 is a schematic block diagram of a first connection of a thermal management system;

FIG. 2 is a schematic block diagram of a second connection of a thermal management system;

FIG. 3 is a schematic block diagram of a third connection of a thermal management system;

FIG. 4 is a schematic refrigerant flow diagram of the heat management system of FIG. 1 with the first heat exchanger heating;

FIG. 5 is a schematic refrigerant flow diagram of the heat management system of FIG. 1 with the first heat exchanger cooling;

FIG. 6 is a schematic flow diagram of the refrigerant and coolant of the heat management system of FIG. 3 in a heat recovery mode;

FIG. 7 is a schematic flow diagram of the refrigerant and coolant of the heat management system of FIG. 3 with the first heat exchanger cooling and the compressor turned on;

FIG. 8 is a schematic view of the first heat exchanger of FIG. 3;

FIG. 9 is a schematic view of the first valve device of FIG. 1;

fig. 10 is a schematic flow diagram of the cooling fluid of the heat management system of fig. 3 with the first heat exchanger cooling and the compressor turned off.

Detailed Description

The utility model discloses technical scheme's thermal management system and thermal management device can have multiple implementation mode, and wherein at least one implementation mode can be applied to vehicle thermal management system, and at least one implementation mode can be applied to other thermal management systems such as domestic thermal management system or commercial thermal management system, uses vehicle thermal management system as the example below to describe in combination with the figure.

Referring to the first embodiment of the thermal management system illustrated in fig. 1, 4, 5 and 9, the thermal management system includes a refrigerant system including a compressor 100, a first valve device 200, a first thermal management unit 300, a second thermal management unit 5000 and a first outdoor heat exchanger 700, the compressor 100 being capable of sucking, compressing and discharging a high-temperature and high-pressure refrigerant in the refrigerant system, the first thermal management unit 300 being located in an air-conditioning compartment of a vehicle for adjusting an indoor temperature of the vehicle; the second thermal management unit 5000 is used to regulate the temperature of the battery so that the battery operates within a reasonable temperature range. The first outdoor heat exchanger 700 is used to exchange heat with ambient air, and the first outdoor heat exchanger 700 can absorb heat from or release heat to the ambient air. In this embodiment, the first valve device 200 is a four-way reversing valve, the first valve device 200 has four ports, the first port 201 of the first valve device 200 communicates with the outlet of the compressor 100, the second port 202 of the first valve device 200 communicates with the inlet of the compressor 100, the first port of the first thermal management unit 300 and the first port of the second thermal management unit 500 communicate with the third port 203 of the first valve device 200, the second port of the first thermal management unit 300 can communicate with the first port of the first outdoor heat exchanger 700, the second port of the second thermal management unit 5000 communicates with the first port of the first outdoor heat exchanger 700, and the second port of the first outdoor heat exchanger 700 communicates with the fourth port of the first valve device 200. The first valve arrangement 200 may also be other kinds of valves or combinations of valves.

In the heating mode of the thermal management system, the outlet of the compressor 100 is communicated with the first thermal management unit 300 and the second thermal management unit 5000 through the first valve device 200, and at this time, the high-temperature and high-pressure refrigerant discharged from the compressor 100 can release heat in the first thermal management unit 300 and/or the second thermal management unit 5000, the refrigerant discharged from the first thermal management unit 300 is throttled and enters the first outdoor heat exchanger 700, the refrigerant discharged from the second thermal management unit 5000 enters the first outdoor heat exchanger 700, and the refrigerant absorbs heat in ambient air in the first outdoor heat exchanger 700 and then enters the inlet of the compressor 100 through the first valve device 200. In a cooling mode of the thermal management system, the outlet of the compressor 100 is communicated with the first outdoor heat exchanger 700 through the first valve device 200, and at this time, the high-temperature and high-pressure refrigerant discharged from the compressor 100 releases heat in the first outdoor heat exchanger 700, the refrigerant discharged from the first outdoor heat exchanger 700 is throttled and enters the first thermal management unit 300 to absorb heat in the first thermal management unit 300, so as to reduce the temperature of the passenger compartment, and/or the refrigerant discharged from the first outdoor heat exchanger 700 absorbs heat in the second thermal management unit 5000, so as to reduce the temperature of the battery, and the refrigerant discharged from the first thermal management unit 300 and the second thermal management unit 5000 enters the inlet of the compressor 100 through the first valve device 200.

The second thermal management unit 5000 includes a first regulating valve 430, a first expansion valve 440, a first heat exchanger 500, and a first dual-flow-channel heat exchanger 600, the first heat exchanger 500 being in direct or indirect contact with the battery for regulating the temperature of the battery; the first dual-channel heat exchanger 600 has a first channel and a second channel, both of which are refrigerant channels, refrigerant in the first channel can exchange heat with refrigerant in the second channel, and a second interface of the second thermal management unit 5000 is communicated with the second channel of the first dual-channel heat exchanger 600. The third port 203 of the first valve arrangement 200 communicates with the first flow path of the first dual flow path heat exchanger 600 through the first regulator valve 430, wherein the first interface of the second thermal management unit 5000 is a port of the first regulator valve 430 or communicates with the port of the first regulator valve 430. In the present embodiment, the first regulating valve is an expansion valve having a full opening function, and the first expansion valve has a two-way throttle function. In the battery heating mode, the refrigerant flow direction is: when the third port of the first valve device 200, the first regulating valve 430, the first flow path of the first dual flow path heat exchanger 600, the first heat exchanger 500, the first expansion valve 440, the second flow path of the first dual flow path heat exchanger 600, and the first port of the first outdoor heat exchanger 700 are in the fully open state, the first regulating valve 430 is in the throttle state, and the first expansion valve 440 is in the throttle state. In the battery heating mode, since the first regulating valve 430 is fully opened and the first expansion valve 440 is throttled, the high-temperature and high-pressure refrigerant from the compressor 100 enters the first flow channel of the first dual-flow-channel heat exchanger 600 and the first heat exchanger 500, the refrigerant in the first heat exchanger 500 releases heat to heat the battery, the refrigerant throttled by the first expansion valve 440 enters the second flow channel of the first dual-flow-channel heat exchanger 600, and since there is a temperature difference between the refrigerant in the first flow channel of the first dual-flow-channel heat exchanger 600 and the refrigerant in the second flow channel of the first dual-flow-channel heat exchanger 600, the refrigerant exchanges heat in the first dual-flow-channel heat exchanger 600, so that the temperature of the refrigerant entering the first heat exchanger 500 is lower than that of the refrigerant at the outlet of the compressor 100, and compared with the thermal first thermal management unit 300 without the first dual-flow-channel heat exchanger 600, the temperature difference between the batteries at the inlet and the outlet of the first heat exchanger 500 is reduced, so that the temperature of the battery is not too high, the temperature uniformity of the battery is relatively improved, and the temperature of the battery is in a reasonable range. This also relatively reduces the temperature difference between the inlet side of the first heat exchanger and the outlet side of the first heat exchanger 500, improves the temperature uniformity of the first heat exchanger 500, and also makes the temperature of the battery relatively uniform. If the temperature of the battery needs to be adjusted, the heat exchange amount in the first dual-channel heat exchanger 600 can be adjusted by controlling the opening degree of the first adjusting valve 430 and the opening degree of the first expansion valve 440, so as to adjust the heat exchange amount between the battery and the first heat exchanger 500. It should be noted that "the outlet side of the first heat exchanger 500 and the inlet side of the first heat exchanger 500" described herein are defined in the case of the battery heating mode.

In the battery cooling mode, the flow direction of the refrigerant is as follows: the first port of the first outdoor heat exchanger 700, the second flow path of the first dual flow path heat exchanger 600, the first expansion valve 440, the first heat exchanger 500, the first flow path of the first dual flow path heat exchanger 600, the first regulation valve 430, and the third port of the first valve device 200, where the first regulation valve 430 is in a fully open state and the first expansion valve 440 is in a throttled state. After the refrigerant is condensed in the first outdoor heat exchanger 700, the refrigerant is further condensed in the second flow channel of the first dual-flow-channel heat exchanger 600, and is throttled and depressurized by the first expansion valve 440, the refrigerant absorbs heat of the battery in the first heat exchanger 500 to reduce the temperature of the battery, and then the refrigerant enters the first flow channel of the first dual-flow-channel heat exchanger 600 to exchange heat with the refrigerant in the second flow channel of the first dual-flow-channel heat exchanger 600, and the first thermal management unit 300 is provided with the first dual-flow-channel heat exchanger 600, so that the temperature distribution of the refrigerant in the first heat exchanger 500 is more uniform, the temperature of the battery is more uniform, and the improvement of the performance of the battery is facilitated. If the temperature of the battery needs to be further precisely adjusted, the heat exchange amount in the first dual flow channel heat exchanger 600 can be adjusted by controlling the opening degree of the first adjusting valve 430 and the opening degree of the first expansion valve 440, thereby adjusting the heat exchange amount between the battery and the first heat exchanger 500.

The refrigerant system comprises a second regulating valve 410, the first heat management unit 300 comprises a second heat exchanger 310 and a third heat exchanger 320, the third heat exchanger 320 is located upwind of the second heat exchanger 310 in the air flow direction in the air conditioning cabinet, the second regulating valve 410 is arranged between the second heat exchanger 310 and the third heat exchanger 320 in the refrigerant flow direction, one port of the second heat exchanger 310 is communicated with a third port of the first valve device 200, namely the port of the second heat exchanger 310 is a first interface of the first heat management unit, one port of the third heat exchanger 320 is communicated with a first port of the first outdoor heat exchanger 700 through a second expansion valve 420, namely the port of the third heat exchanger 320 is a second interface of the first heat management unit. In the present embodiment, the second expansion valve is an expansion valve having a full opening function, and the second expansion valve has a two-way throttle function. In the heating mode of the passenger compartment, the refrigerant flow direction is: the third port of the first valve device 200, the second heat exchanger 310, the second regulating valve 410, the third heat exchanger 320 and the second expansion valve 420, the high-temperature and high-pressure refrigerant releases heat in the second heat exchanger 310 and the third heat exchanger 320, and then the refrigerant throttled and depressurized by the second expansion valve 420 flows into the first outdoor heat exchanger 700, the refrigerant absorbs heat in the first outdoor heat exchanger 700, and at this time, the second regulating valve 410 is in a fully open state; in the cooling mode of the passenger compartment, the refrigerant flow direction is: the first port of the first outdoor heat exchanger 700, the second expansion valve 420, the third heat exchanger 320, the first expansion valve 440 and the first heat exchanger 500, the refrigerant throttled by the second expansion valve 420 enters the second heat exchanger 310 and the first heat exchanger 500 to absorb heat, at this time, the first expansion valve 440 is fully opened, specifically, after the refrigerant is condensed in the first outdoor heat exchanger 700 to release heat, the refrigerant throttled and depressurized by the second expansion valve 420 flows into the third heat exchanger 320 and the second heat exchanger 310 to absorb heat, and further, the temperature of the passenger compartment is reduced.

The thermal management system further includes a heating and dehumidifying mode for the passenger compartment, wherein the second regulating valve 410 is throttled when the refrigerant absorbs heat in the third heat exchanger 320 to lower the temperature of the air flow in the air conditioning compartment and thereby lower the humidity of the air flow as compared to the heating mode for the passenger compartment, and wherein the temperature of the air entering the passenger compartment from the air conditioning compartment is increased as the air flow passes through the second heat exchanger 310 due to the second heat exchanger 310 being downwind of the third heat exchanger 320 and the refrigerant releasing heat in the second heat exchanger 310, thereby providing more comfort to the occupant.

It is known that by controlling the opening and closing of the respective expansion valves, the cooling mode of the passenger compartment and the cooling mode of the battery can be controlled to operate simultaneously or independently; also, by controlling the opening and closing of the respective expansion valves, the heating mode of the passenger compartment and the heating mode of the battery can be controlled to be operated simultaneously or independently.

Referring to fig. 2 and 3, and fig. 6 and 7, in a second embodiment, compared to the first embodiment, the thermal management system of the present embodiment further includes a coolant system, where the coolant system includes a water pump 950, a second outdoor heat exchanger 930, and a motor temperature controller 910, where the water pump 950 is used to drive the coolant to circulate in the coolant system, the second outdoor heat exchanger 930 is used to release heat from the coolant to the environment, and the motor temperature controller 910 is used to exchange heat with the motor or the electronic device to control the temperature of the motor or the electronic device. The thermal management system comprises a second dual-channel heat exchanger 800, the second dual-channel heat exchanger 800 comprises a first channel and a second channel, the first channel of the second dual-channel heat exchanger 800 is a refrigerant channel, the second channel of the second dual-channel heat exchanger 800 is a cooling liquid channel, and the refrigerant in the first channel of the second dual-channel heat exchanger 800 and the cooling liquid in the second channel of the second dual-channel heat exchanger 800 can exchange heat in the second dual-channel heat exchanger 800; in the flowing direction of the refrigerant, the second flow channels of the first and second dual-flow channel heat exchangers are located between the fourth port of the first valve device and the second port of the second thermal management unit, and in this embodiment, the fourth port of the first valve device 200 is communicated with the first outdoor heat exchanger 700 through the first flow channel of the second dual-flow channel heat exchanger 800, that is, the refrigerant flowing out of the fourth port of the first valve device 200 enters the first outdoor heat exchanger through the second flow channel of the second dual-flow channel heat exchanger 800.

In this embodiment, the first heat exchanger 500 also includes a first flow channel and a second flow channel, the first flow channel of the first heat exchanger 500 is a refrigerant flow channel, and the second flow channel of the first heat exchanger 500 is a coolant flow channel, wherein the second flow channel of the first heat exchanger 500 is a part of a coolant system. The connection manner of the first flow channel of the first heat exchanger 500 is as the first heat exchanger 500 in the first embodiment, and will not be described in detail. The first heat exchanger 500 includes a first connection wall 510510, the first connection wall 510 directly or indirectly contacting the battery, where direct contact means that the first connection wall 510 directly contacts the battery, and indirect contact means that a heat conduction member is further provided between the first connection wall 510 and the battery. First connecting wall 510 includes first wall portions 511 and second wall portions 512, and first wall portions 511 and second wall portions 512 are alternately arranged, and along the extending direction of first connecting wall 510, one side of first wall portion 511 is one second wall portion 512, and the other side of first wall portion 511 is another second wall portion 512, and similarly, one side of second wall portion 512 is located in one first wall portion 511, and the other side of second wall portion 512 is another first wall portion 511; along the perpendicular direction of the first wall portion 511, one side of the first connecting wall 510 is a refrigerant flow channel and a coolant flow channel, and the other side of the first connecting wall 510 is a battery, specifically, one side of the first wall portion 511 is a refrigerant flow channel 501 of the first heat exchanger, the other side of the first wall portion 511 is a battery, one side of the second wall portion 512 is a cooling flow channel 502 of the first heat exchanger, and the other side of the second wall portion 512 is a battery. It can be appreciated that the refrigerant of the first heat exchanger 500 can exchange heat with the battery, and the cooling fluid in the first heat exchanger 500 can also exchange heat with the battery. The first heat exchanger 500 comprises a cooling liquid flow passage and a cooling liquid flow passage, both the cooling liquid and the cooling liquid of the first heat exchanger 500 can exchange heat with the battery for controlling the temperature of the battery, so that the heat management system is relatively simplified, the installation space of the heat management system is also reduced, the thermal inertia of the cooling liquid and the cooling liquid is different, and the temperature of the battery can be better controlled by utilizing the advantages of the cooling liquid flow passage and the cooling liquid flow passage. The refrigerant and the cooling fluid in the first heat exchanger 500 may or may not exchange heat.

The water pump 950, the second flow passage of the first heat exchanger 500, the motor temperature controller 910, the second flow passage of the second dual-flow passage heat exchanger 800, and the second outdoor heat exchanger 930 are in serial communication. The coolant system may further include a first branch 921, a second branch 922, a first water valve 940 and a second water valve 960, where the first water valve 940 and the second water valve 960 may be three-way valves or three-way proportional valves, the first water valve 940 and the second water valve 960 each include three ports, the first water valve 940 and the first branch 921 are matched, and whether the first branch 921 bypasses the second outdoor heat exchanger 930 is selected by controlling the first water valve 940, specifically, the three ports of the first water valve 940 are respectively connected to the first port of the second flow passage of the second two-flow-passage heat exchanger 800, the first port of the first branch 921, and the first port of the second outdoor heat exchanger 930, and the second port of the first branch 921 and the second port of the second outdoor heat exchanger are communicated with an inlet of the water pump.

The second water valve 960 is matched with the second branch 922, and whether the second branch 922 bypasses the second flow channel of the first heat exchanger 500 is selected by controlling the second water valve 960, specifically, three ports of the second water valve 960 are respectively connected with an outlet of the water pump 950, a first port of the second branch 922, and a first port of the second flow channel of the first heat exchanger 500, a second port of the second branch 922 and a second port of the second flow channel of the first heat exchanger 500 are communicated with one port of the motor temperature controller 910, and another port of the motor temperature controller 910 is communicated with a second port of the second flow channel of the second dual-flow-channel heat exchanger 800.

The operation of the thermal management system in relation to the coolant system is described below, wherein the cooling mode of the battery includes refrigerant cooling and/or coolant cooling while the passenger compartment is being cooled, the refrigerant cooling mode of the battery is the same as the first embodiment and will not be described in detail, and the cooling rate of the battery is relatively faster than the cooling rate of the battery in the coolant cooling mode. A cooling liquid cooling mode in the battery. The cooling mode of the battery comprises two forms of opening and closing the compressor, wherein the first form comprises: referring to fig. 10, the compressor is turned off, the water pump 950 is turned on, the first branch 921 is closed by controlling the first water valve 940, the heat of the battery is reduced by releasing the heat of the cooling liquid through the second outdoor heat exchanger 930 after exchanging heat with the battery, and the heat of the motor can also be released through the second outdoor heat exchanger 930. At this time, the second branch 922 may be closed by controlling the second water valve 960, the relatively low temperature coolant discharged from the second outdoor heat exchanger 930 first passes through the second flow path of the first heat exchanger 500 and then enters the motor temperature controller 910, or the second branch 922 may be opened by controlling the second water valve 960, part of the coolant enters the battery temperature controller through the second branch 922, and another part of the coolant passes through the second flow path of the first heat exchanger 500 and then enters the motor temperature controller 910, compared with when the second branch 922 is closed, the temperature of the motor temperature controller 910 may be relatively rapidly reduced, and if the second water valve 960 is a proportional valve, the proportion of the coolant entering the first heat exchanger may also be adjusted. In a second form, referring to fig. 7, the compressor 100 is turned on, the first regulating valve 430 and/or the first expansion valve 440 are/is closed, the first valve device 200 allows the refrigerant discharged from the compressor 100 to enter the first thermal management unit 300, the refrigerant releases heat in the first thermal management unit 300, after the second expansion valve 420 is throttled, the refrigerant absorbs heat of the coolant in the second dual-channel heat exchanger 800 to reduce the temperature of the coolant, the coolant enters the first heat exchanger 500 to reduce the temperature of the battery under the driving of the water pump 950, and at this time, the first branch 921 bypasses the second outdoor heat exchanger 930, and the flow rate of the coolant flowing into the first heat exchanger 500 can also be regulated by the second water valve.

The heating mode of the battery includes a refrigerant heating mode, which is the same as the first embodiment and will not be described in detail.

Referring to fig. 6, in the passenger compartment heating mode, the refrigerant throttled by the second expansion valve 420 enters the second flow channels of the first outdoor heat exchanger 700 and the second dual-flow-channel heat exchanger 800, the refrigerant absorbs heat in the first heat exchanger 500, if the ambient temperature is low, the heat management system cannot absorb enough heat through the first heat exchanger 500, the water pump is turned on, the second water valve 960 is controlled to open the second branch 922, the first water valve 940 is controlled to open the first branch 921, and the cooling liquid absorbing heat of the motor exchanges heat with the refrigerant in the second dual-flow-channel heat exchanger 800, so that the heat generated by the motor is recycled. Likewise, the heat recovery mode may also be operated in a battery refrigerant heating mode, or in a battery refrigerant heating and passenger compartment heating mode.

It should be noted that: the above embodiments are only used for illustrating the present invention and not for limiting the technical solutions described in the present invention, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solutions and modifications thereof without departing from the spirit and scope of the present invention can be modified or replaced by other technical solutions and modifications by those skilled in the art.

Claims

1. A thermal management system comprising a refrigerant system including a compressor, a first thermal management unit, and a first outdoor heat exchanger, the thermal management system including a second thermal management unit, refrigerant discharged from the compressor being capable of heat exchange in the first thermal management unit, the second thermal management unit, refrigerant discharged from the first outdoor heat exchanger also being capable of heat exchange in the first thermal management unit, the second thermal management unit;

2. The thermal management system of claim 1, wherein said refrigerant system further comprises a first valve device and a second expansion valve, the first valve device is capable of switching a refrigerant flow direction of the refrigerant system, an outlet of the compressor is communicated with a first port of the first valve device, an inlet of the compressor is in communication with the second port of the first valve device, the first interface of the first thermal management unit, the first interface of the second thermal management unit are in communication with the third port of the first valve device, the second port of the first thermal management unit is capable of communicating with the first port of the first outdoor heat exchanger through the second expansion valve, the second port of the second thermal management unit is in communication with the first port of the first outdoor heat exchanger, the second port of the first outdoor heat exchanger is communicated with the fourth port of the first valve device;

the first interface of the second thermal management unit is a port of the first regulating valve or is communicated with the port of the first regulating valve, and the second interface of the second thermal management unit is communicated with the second flow passage of the first dual-flow-passage heat exchanger.

3. The thermal management system of claim 2, wherein the thermal management system is applied to a vehicle, the first thermal management unit is located in an air conditioning box of the vehicle, and the second thermal management unit is capable of regulating and controlling the temperature of a vehicle battery;

the refrigerant system comprises a second regulating valve, the first thermal management unit comprises a second heat exchanger and a third heat exchanger, the second heat exchanger is communicated with the third heat exchanger through the second regulating valve, one port of the second heat exchanger is a first interface of the first thermal management unit, and one port of the third heat exchanger is a second interface of the first thermal management unit; and the third heat exchanger is arranged in the upwind direction of the second heat exchanger along the airflow direction in the air conditioning box.

4. The thermal management system of any of claims 1-3, applied to a vehicle, the thermal management system comprising a coolant system, the first heat exchanger comprising a refrigerant flow path and a coolant flow path, the refrigerant flow path and the coolant flow path of the first heat exchanger not being in communication, the coolant flow path of the first heat exchanger being part of the coolant system;

the first heat exchanger comprises a first connecting wall, the first connecting wall is in direct or indirect contact with a battery, the first connecting wall comprises a first wall portion and a second wall portion, the first wall portion and the second wall portion are alternately arranged in the vertical direction of the first connecting wall, one side of the first wall portion is a refrigerant flow channel, the other side of the first wall portion is the battery, one side of the second wall portion is a cooling liquid flow channel, and the other side of the second wall portion is the battery.

5. The thermal management system of claim 4, further comprising a first valve apparatus, the thermal management system comprising a second dual flow heat exchanger having a refrigerant flow path and a coolant flow path, the coolant system comprising a water pump, a second outdoor heat exchanger, and the coolant flow path of the second dual flow heat exchanger, the refrigerant flow paths of the first outdoor heat exchanger, the second dual flow heat exchanger being positioned between the fourth port of the first valve apparatus and the second port of the second thermal management unit in the direction of the refrigerant flow, the coolant flow paths of the second outdoor heat exchanger, the second dual flow heat exchanger, the water pump, and the coolant flow path of the first heat exchanger being in series communication.

6. The thermal management system of claim 5, wherein the refrigerant system further comprises a second expansion valve through which the second port of the first thermal management unit is communicable with the first port of the first outdoor heat exchanger; the coolant system further comprises a first branch, a first water valve, a second branch, and a second water valve, the first water valve configured to enable coolant to pass through the first branch or the second outdoor heat exchanger, the second water valve configured to enable coolant to pass through a coolant flow path of the second branch and/or the first heat exchanger;

the cooling liquid system also comprises a motor temperature controller, and the motor temperature controller is serially arranged with the cooling liquid flow passage of the second dual-flow-passage heat exchanger;

the heat management system further comprises a heat recovery mode, wherein in the heat recovery mode, the compressor is started, the water pump is started, the first valve device enables refrigerant discharged by the compressor to enter the first heat management unit and/or the second heat management unit, the first expansion valve and/or the second expansion valve is started, the first water valve enables the first branch to bypass the second outdoor heat exchanger, and the second water valve enables the second branch to bypass the first heat exchanger.

7. The thermal management system of claim 5 or 6, wherein the coolant system further comprises a first branch, a first water valve, the thermal management system comprising a coolant cooling mode of a battery;

in a cooling liquid cooling mode of the battery, the water pump is started, the compressor is closed, the first water valve closes the first branch circuit and opens a flow path of the second outdoor heat exchanger; or, the compressor is started and the first regulating valve and/or the first expansion valve are/is closed, the first valve device enables the refrigerant discharged by the compressor to enter the first heat management unit, and the first water valve bypasses the second outdoor heat exchanger.

8. The thermal management system of claim 7, wherein the coolant system further comprises a second water valve, the second water valve being a proportional regulating valve, the second water valve regulating a proportion of coolant entering the first heat exchanger.