Thermal management system

Abstract

The application discloses a heat management system for heat exchange of a heat exchange demand unit of a robot, which comprises a circulation loop and a shell, the circulation loop comprises a first heat exchanger and a first fan, the shell has an inner cavity, the first heat exchanger and the first fan are accommodated in the inner cavity, the shell has a ventilation opening, the ventilation opening is communicated with the inner cavity, the shell further has a heat exchange demand unit accommodating cavity, the heat exchange demand unit accommodating cavity is used for accommodating the heat exchange demand unit of the robot, the heat management system comprises an air duct, the air duct is communicated with the inner cavity, and the air duct can be communicated with the heat exchange demand unit accommodating cavity. The heat management system can meet the heat dissipation demand under a high-temperature environment.

Description

Technical Field

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

[0002] With the maturity of intelligent human-computer interaction technology, various intelligent robots and robot dogs have been continuously released as concept products or have begun to be mass-produced and marketed in recent years. The human-computer interaction interface, control unit, moving parts, and power supply battery module are the main functional modules of an intelligent robot. These functional modules generate varying degrees of heat during operation. If the heat is not dissipated in time, it will reduce the working efficiency of the functional module or even cause damage.

[0003] In related technologies, forced air cooling or natural surface cooling is used. However, when the ambient temperature is high or the heat dissipation demand is large, it is difficult to meet the heat dissipation requirements of high power density. Summary of the Invention

[0004] The purpose of this invention is to provide a thermal management system that can meet the heat dissipation requirements of robots in high-temperature environments.

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

[0006] A thermal management system is provided for heat exchange of a robot's heat exchange demand unit. The thermal management system includes a circulation loop and a housing. The circulation loop includes a first heat exchanger and a first fan. The housing has an inner cavity in which the first heat exchanger and the first fan are housed. The housing has a vent that communicates with the inner cavity. The housing also has a heat exchange demand unit receiving cavity for accommodating the robot's heat exchange demand unit. The thermal management system includes an air duct that communicates with the inner cavity and is capable of communicating with the heat exchange demand unit receiving cavity.

[0007] The thermal management system of the present invention is housed in an inner cavity through a first heat exchanger. Air in the inner cavity passes through an air duct and enters the heat exchange demand unit housing cavity to exchange heat with the heat exchange demand unit. The cooling capacity is concentrated, which can meet the heat dissipation requirements in high-temperature environments. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of a first embodiment of the thermal management system of the present invention;

[0009] Figure 2 for Figure 1 A schematic diagram of the middle part of the system;

[0010] Figure 3 This is a schematic diagram of other connection methods for the heat exchange demand unit of the present invention;

[0011] Figure 4 This is a schematic diagram of the working process of the first embodiment under high temperature conditions;

[0012] Figure 5 This is a schematic diagram of the working process of the first embodiment at low temperature.

[0013] Figure 6 This is a schematic diagram of a second embodiment of the thermal management system of the present invention;

[0014] Figure 7 This is a schematic diagram of the working process of the second embodiment under high temperature conditions;

[0015] Figure 8 This is a schematic diagram of the working process of the second embodiment at low temperature.

[0016] Figure 9 This is a schematic diagram of the working process of the second embodiment under extremely low temperature conditions;

[0017] Figure 10 This is a schematic diagram of a third embodiment of the thermal management system of the present invention;

[0018] Figure 11 This is a schematic diagram of the working process of the third embodiment under high temperature conditions;

[0019] Figure 12 This is a schematic diagram of the working process of the third embodiment at low temperature.

[0020] Figure 13 This is a schematic diagram of the working process of the third implementation method under extremely low temperature conditions. Detailed Implementation

[0021] The exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. If several embodiments exist, features in these embodiments may be combined with each other without conflict. When the description refers to the drawings, unless otherwise stated, the same numbers in different drawings represent the same or similar elements. The descriptions in the following exemplary embodiments do not represent all embodiments consistent with the present invention; rather, they are merely examples of apparatuses, products, and / or methods consistent with some aspects of the present invention as set forth in the claims.

[0022] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the scope of protection of this invention. The singular forms “a,” “the,” or “the” as used in the specification and claims of this invention are also intended to include the plural forms unless the context clearly indicates otherwise.

[0023] It should be understood that the terms "first," "second," and similar words used in the specification and claims of this invention do not indicate any order, quantity, or importance, but are merely used to distinguish features. Similarly, the terms "an" or "a" do not indicate a quantity limitation, but rather indicate the presence of at least one. Unless otherwise stated, the terms "before," "after," "upper," "lower," and similar words appearing in this invention are for ease of explanation only and are not limited to a specific location or spatial orientation. The terms "comprising" or "including" are an open-ended expression, meaning that the element preceding "comprising" or "including" encompasses the element following "comprising" or "including" and its equivalents, but this does not preclude the element preceding "comprising" or "including" from also including other elements. In this invention, the term "several" means two or more.

[0024] The human-computer interaction unit, control unit, motion unit, and battery unit are the main functional modules of an intelligent robot. These modules generate heat to varying degrees during operation. If this heat is not dissipated in time, the efficiency of the module will decrease or it may even be damaged. Therefore, this invention provides a thermal management system for heat exchange of the robot's heat-requiring units.

[0025] Figure 1 A flowchart of a first embodiment of the thermal management system of the present invention is shown, as follows: Figure 1 As shown, the thermal management system includes a circulation loop 1 and a housing 2. The circulation loop 1 is equipped with a refrigeration unit, which provides cooling to the heat exchange demand units. These heat exchange demand units include a battery unit, a control unit, a motion unit, and an interaction unit. The battery unit is a unit with lower temperature requirements, while the interaction unit, control unit, and motion unit are units with higher temperature requirements. The lower and higher temperature demand units have different heat exchange requirements. That is, the battery unit needs to be maintained at a lower temperature, while the interaction unit, control unit, and motion unit only need to be at a moderate temperature. Therefore, compared to the interaction unit, control unit, and motion unit, the thermal management system needs to provide more cooling to the battery unit.

[0026] like Figure 1 As shown, the refrigeration unit includes a first heat exchanger 11, a first fan 12, a compressor 13, a second heat exchanger 14, and a throttling device 15, which are connected in series. The first heat exchanger 11 is an evaporator used for the evaporation of the refrigerant. The refrigerant absorbs heat from the air and evaporates into a gaseous state, thus cooling the air. The second heat exchanger 14 is a condenser used for the condensation of the refrigerant. The refrigerant releases heat and becomes liquid, transferring the heat to the air.

[0027] The housing 2 has an inner cavity 201, in which the first heat exchanger 11 and the first fan 12 are housed. This facilitates the concentration of cooling capacity and improves cooling efficiency. The housing 2 has a vent 202 that communicates with the inner cavity 201. The housing 2 also has a heat exchange demand unit receiving cavity 203 for accommodating the robot's heat exchange demand units. The thermal management system includes an air duct 3 that communicates with the inner cavity 201 and can communicate with the heat exchange demand unit receiving cavity 203. The air duct 3 may be a gap in the robot's joints.

[0028] In the embodiment illustrated in this application, the compressor 13, the second heat exchanger 14, and the throttling device 15 are located outside the inner cavity 201. The refrigerant circulates in the circulation loop 1. After receiving the gaseous refrigerant from the first heat exchanger 11, the compressor 13 compresses it into a high-temperature, high-pressure gaseous refrigerant, which then enters the second heat exchanger 14 and condenses into a high-temperature, medium-pressure liquid refrigerant. Passing through the throttling device 15, it becomes a low-temperature, low-pressure gas-liquid two-phase refrigerant and enters the first heat exchanger 11. Heat exchange occurs during the contact between the air and the first heat exchanger 11; that is, the refrigerant in the first heat exchanger 1 absorbs heat from the air and continuously evaporates, turning into gas, thus cooling the air. After cooling, the air passes through the air duct 3 to cool the units requiring heat exchange. Using the compressor 13 to compress and circulate the refrigerant can meet the cooling needs of units requiring lower temperatures.

[0029] The first fan 12 is located beside the first heat exchanger 11, and its air inlet is connected to the vent 202. The air duct 3 has an air duct inlet 301 and an air duct outlet 302. The air outlet of the first fan 12 is connected to the air duct inlet 301, and the air duct outlet 302 faces the heat exchange demand unit receiving cavity 203. The first heat exchanger 11 is located between the vent 202 and the air duct inlet 301. The first fan 12 is used to carry the cooling energy generated by the first heat exchanger 1 to the air duct 3. The thermal management system also includes a second fan 12', which is located beside the second heat exchanger 14.

[0030] The heat exchange demand unit receiving cavity 203 includes a battery unit receiving cavity 2031, a control unit receiving cavity 2032, a motion unit receiving cavity 2033, and an interaction unit receiving cavity 2034. The battery unit receiving cavity 2031 is used to receive battery units, the control unit receiving cavity 2032 is used to receive control units, the motion unit receiving cavity 2033 is used to receive motion units, and the interaction unit receiving cavity 2034 is used to receive interaction units. There is at least one air duct 3, and at least one air duct 3 is connected to the battery unit receiving cavity 2031, the control unit receiving cavity 2032, the motion unit receiving cavity 2033, and the interaction unit receiving cavity 2034.

[0031] At least two of the battery cell receiving cavity 2031, control unit receiving cavity 2032, motion unit receiving cavity 2033 and interaction unit receiving cavity 2034 are connected, or the battery cell receiving cavity 2031, control unit receiving cavity 2032, motion unit receiving cavity 2033 and interaction unit receiving cavity 2034 are not connected to each other.

[0032] In some embodiments, there are four air ducts 3. The inner cavity 201 is connected to the battery unit housing 2031 via one air duct 3; the inner cavity 201 is connected to the control unit housing 2032 via another air duct 3; the inner cavity 201 is connected to the motion unit housing 2033 via another air duct 3; and the inner cavity 201 is connected to the interaction unit housing 2034 via another air duct 3. Each air duct 3 has an air duct inlet 301 and an air duct outlet 302. During operation, air is distributed to the four air ducts 3 and cools the battery unit, control unit, motion unit, and interaction unit. In other embodiments, there are also four air ducts 3. The inner cavity 201 is connected to the battery unit housing 2031 via one air duct 3; the battery unit housing 2031 is connected to the control unit housing 2032 via another air duct 3; the control unit housing 2032 is connected to the motion unit housing 2033 via another air duct 3; and the motion unit housing 2033 is connected to the interaction unit housing 2034 via another air duct 3. During operation, air first cools the battery cell, and then flows sequentially to the control unit, motion unit, and interaction unit, thereby meeting the low temperature requirements of the battery cell.

[0033] The thermal management system also has air inlets and outlets, both of which can communicate with the environment outside the housing 2. The air inlets and outlets can be in the gaps of the robot joints or be directly exposed.

[0034] See Figure 2 The thermal management system includes a first air valve 4, which is located in the housing 2. The first air valve 4 is used to control the opening or closing of the ventilation opening 202. Opening means that the inner cavity 201 is connected to the outside, and outside air can enter the inner cavity 201; closing means that the inner cavity 201 is not connected to the outside, and outside air cannot enter the inner cavity 201.

[0035] In this implementation, the thermal management system adopts different operating modes according to different ambient temperatures. In high-temperature environments, a compressor cooling mode can be used; in low-temperature environments, the compressor cooling cycle does not work, and natural air circulation is used for heat dissipation, which is beneficial for energy conservation and environmental protection, and improves battery life.

[0036] When the ambient temperature is high, such as Figure 4As shown, after receiving the gaseous refrigerant from the first heat exchanger 11, the compressor 13 compresses it into a high-temperature, high-pressure gaseous refrigerant, which then enters the second heat exchanger 14 and condenses into a high-temperature, medium-pressure liquid refrigerant. After passing through the throttling device 15, it becomes a low-temperature, low-pressure gas-liquid two-phase refrigerant and enters the first heat exchanger 11. The vent 202 is in a conductive state, and the outside air enters the inner cavity 201 and exchanges heat with the first heat exchanger 11. The refrigerant in the first heat exchanger 11 absorbs the heat from the air and continuously evaporates, turning into gas, thereby cooling the air. After cooling, the air passes through the air duct 3 to cool each heat exchange demand unit. The cooled air enters the external environment through structural gaps or open structures.

[0037] When the ambient temperature is low, such as Figure 5 As shown, compressor 13 is not working, vent 202 is in the open state, and the first fan 12 draws in low-temperature air from the outside to cool each heat exchange demand unit. The cooled air enters the external environment through structural gaps or open structures.

[0038] The first embodiment of the thermal management system of the present invention has low requirements for structural sealing. It only needs to concentrate the cooling capacity of the first heat exchanger 11 through the shell 2 and then transport it to each demand unit of the heat exchange demand unit 100 through the air duct 3, which is easy to manufacture.

[0039] Figure 6 A flowchart of a second embodiment of the thermal management system of the present invention is shown, as follows: Figure 6 As shown, the thermal management system also includes a return air duct 204 and a return air inlet 205. The return air duct 204 connects the return air inlet 205 and the heat exchange demand unit housing 203. The return air inlet 205 is connected to the inner cavity 201. The housing 2 is located around the return air duct 204. In this embodiment, the housing 2 can form a complete, relatively sealed airflow circulation between the first heat exchanger 11 and the heat exchange demand unit; at very low temperatures, the heat generated by the control unit, motion unit, and interaction unit can heat the battery unit, which is beneficial for energy saving and improving battery life.

[0040] The thermal management system includes a second air valve 5, which is located in the housing 2. The second air valve 5 is used to control the opening or closing of the return air inlet 205, and the number of return air inlets 205 is at least one. In the embodiment illustrated in this application, there are two return air inlets 205, and two second air valves 5 are correspondingly provided for the two return air inlets 205.

[0041] In some embodiments, the housing 2 has an exhaust vent 208, which can be a gap in a robot joint. The heat exchange demand unit housing 203 is in communication with the exhaust vent 208, which is connected to the external environment to discharge the heat-exchanged air. The thermal management system also includes a third air valve 7, which is located in the housing 2 and is used to control the opening or closing of the exhaust vent 208.

[0042] The thermal management system also has air inlets and outlets, which are located in the housing 2 and are both able to communicate with the environment outside the housing 2. The air inlets and outlets can be gaps in the robot joints or be directly exposed.

[0043] In this implementation, the thermal management system adopts different operating modes according to different ambient temperatures. In high-temperature environments, a compressor cooling mode can be used; in low-temperature environments, the compressor cooling cycle does not work, and natural air circulation is used for heat dissipation, which is beneficial for energy conservation and environmental protection, and improves battery life; in extremely low-temperature environments, the compressor cooling cycle does not work, and the heat generated by the control unit, motion unit, and interaction unit is used to heat the battery unit.

[0044] When the ambient temperature is high, such as Figure 7 As shown, after receiving the gaseous refrigerant from the first heat exchanger 11, the compressor 13 compresses it into a high-temperature, high-pressure gaseous refrigerant, which then enters the second heat exchanger 14 and condenses into a high-temperature, medium-pressure liquid refrigerant. This liquid refrigerant then passes through the throttling device 15 and becomes a low-temperature, low-pressure gas-liquid two-phase refrigerant before entering the first heat exchanger 11. The vent 202 and exhaust vent 208 are both in a closed state, while the return air vent 205 is in a conductive state. The inner cavity 201 is not connected to the outside, but it is connected to the return air passage 204. The refrigerant in the first heat exchanger 11 absorbs heat from the air and continuously evaporates, becoming a gas, thus cooling the air. After cooling, the air passes through the air duct 3 to cool each heat exchange unit. The cooled air enters the return air passage 204, passes through the return air vent 205, and enters the inner cavity 201, continuing to be cooled by the first heat exchanger 11. This process achieves air circulation.

[0045] When the ambient temperature is low, such as Figure 8 As shown, compressor 13 is not working, vent 202 and exhaust vent 208 are both open, and return air vent 205 is closed. The first fan 12 draws in low-temperature air from the outside to cool each heat exchange unit, and the cooled air is discharged outside the housing 2 through exhaust vent 208. That is to say, in natural heat dissipation mode, the third air valve 7 controls the exhaust vent 208 to open, and the exhaust vent 208 is connected to the environment outside the housing 2.

[0046] When the ambient temperature is lower, such as Figure 9As shown, compressor 13 is not working, vent 202 and exhaust vent 208 are both in the closed state, and return air vent 205 is in the open state; the inner cavity 201 is not connected to the outside, but is connected to the return air channel 204; the heat generated by the control unit, motion unit and interaction unit heats the battery unit, and the heated air enters the return air channel 204 and enters the inner cavity 201 through the return air vent 205 to achieve air circulation. By using the heat of the unit with higher temperature demand to supply heat to the unit with lower temperature demand, the system's own waste heat is effectively utilized, which is conducive to energy saving, reducing battery load and improving battery range.

[0047] Figure 10 A flowchart of a third embodiment of the thermal management system of the present invention is shown, as follows: Figure 10 As shown, the thermal management system has a return air duct 204 and a return air inlet 205', with the return air duct 204 connecting the return air inlet 205' and the heat exchange demand unit housing cavity 203.

[0048] See Figure 10 The thermal management system has an air inlet 206 and an air outlet 207, both located in the housing 2, and both can communicate with the environment outside the housing 2. The second heat exchanger 14 has a flow channel through which air passes, communicating with both the air inlet 206 and the air outlet 207. The thermal management system includes a fourth air valve 8 and a fifth air valve 9, both located in the housing 2. The fourth air valve 8 controls the opening or closing of the air inlet 206, and the fifth air valve 9 controls the opening or closing of the air outlet 207.

[0049] See also Figure 10 The thermal management system includes an airflow switching mechanism 6, which is at least partially located within the housing 2. The airflow switching mechanism 6 has a first state and a second state. In the first state, the return air inlet 205' is connected to the ventilation outlet 202. In the first state, the thermal management system has a cooling and heat dissipation mode and a heating mode. In the cooling and heat dissipation mode, both the air inlet 206 and the air outlet 207 are open, connected, and both can communicate with the environment outside the housing 2. In the heating mode, both the air inlet 206 and the air outlet 207 are closed, and neither is connected to the environment outside the housing 2. In the second state, the return air inlet 205' is not connected to the ventilation outlet 202, both the air inlet 206 and the air outlet 207 are open, the return air inlet 205' is connected to the air outlet 207, and the air inlet 206 is connected to the ventilation outlet 202.

[0050] In this embodiment, the air outlet side of the second fan 12' faces the air outlet 207.

[0051] The housing 2 has an exhaust vent, which can be a gap in the robot's joints. The heat exchange demand unit housing 203 is connected to the exhaust vent, which is open to the external environment to discharge the heat-exchanged air. The thermal management system also includes a third air valve located in the housing 2, which controls the opening and closing of the exhaust vent. In natural heat dissipation mode, the third air valve controls the exhaust vent to open, connecting it to the environment outside the housing 2.

[0052] In this implementation, the thermal management system adopts different operating modes according to different ambient temperatures. In high-temperature environments, a compressor cooling mode can be used; in low-temperature environments, the compressor cooling cycle does not work, and natural air circulation is used for heat dissipation, which is beneficial for energy conservation and environmental protection, and improves battery life; in extremely low-temperature environments, the compressor cooling cycle does not work, and the heat generated by the control unit, motion unit, and interaction unit is used to heat the battery unit.

[0053] When the ambient temperature is high, such as Figure 11 As shown, after receiving the gaseous refrigerant from the first heat exchanger 11, the compressor 13 compresses it into a high-temperature, high-pressure gaseous refrigerant, which then enters the second heat exchanger 14 and condenses into a high-temperature, medium-pressure liquid refrigerant. This liquid refrigerant then passes through the throttling device 15 and becomes a low-temperature, low-pressure gas-liquid two-phase refrigerant before entering the first heat exchanger 11. The airflow switching mechanism 6 is in its first state, with the return air inlet 205' connected to the ventilation outlet 202. Both the air inlet 206 and the air outlet 207 are open, connected, and the air inlet 206 and the air outlet 207 are connected. All 07 can communicate with the environment outside the shell 2. The refrigerant in the first heat exchanger 11 absorbs heat from the air and evaporates continuously, turning into gas to cool the air. After cooling, the air passes through the air duct 3 to cool each heat exchange unit. After cooling, the air enters the inner cavity 201 through the return air inlet 205' and the ventilation inlet 202 in sequence, and continues to be cooled by the first heat exchanger 11. The external air enters the flow channel of the second heat exchanger 3 through the air inlet 206 for heat exchange. The air with increased temperature is carried to the external environment by the second fan 12'.

[0054] When the ambient temperature is low, such as Figure 12 As shown, the compressor 13 is not working, and the airflow switching mechanism 6 is in the second state. At this time, in the second state, the return air port 205' is not connected to the ventilation port 202, and the air inlet 206 and the air outlet 207 are both open. The return air port 205' is connected to the air outlet 207, and the air inlet 206 is connected to the ventilation port 202. The first fan 12 draws in low-temperature air from the outside to cool each heat exchange demand unit. The cooled air is discharged outside the casing 2 through the return air port 205' and the air outlet 207 in sequence.

[0055] When the ambient temperature is lower, such as Figure 13As shown, compressor 13 is not working, and airflow switching mechanism 6 is in the first state. At this time, return air vent 205' is connected to ventilation vent 202. The heat generated by control unit, motion unit and interaction unit heats battery unit. The heated air enters inner cavity 201 through return air vent 205' to achieve air circulation. By using the heat of higher temperature demand unit to supply heat to lower temperature demand unit, the system's own waste heat is effectively utilized, which is conducive to energy saving, reducing battery load and improving battery range.

[0056] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of this specification should be based on those skilled in the art. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present invention. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A thermal management system for heat exchange of a robot's heat exchange demand units, characterized in that, The thermal management system includes a circulation loop and a housing. The circulation loop includes a first heat exchanger and a first fan. The housing has an inner cavity in which the first heat exchanger and the first fan are housed. The housing has a vent that communicates with the inner cavity. The housing also has a heat exchange demand unit receiving cavity for accommodating the heat exchange demand unit of the robot. The circulation loop includes a compressor; The thermal management system has a return air duct and a return air inlet, the return air duct connecting the return air inlet and the heat exchange demand unit housing cavity; the thermal management system also has an air inlet and an air outlet, both located within the housing, and both the air inlet and the air outlet are capable of communicating with the environment outside the housing; The thermal management system includes an airflow switching mechanism, which is at least partially located in the housing. The airflow switching mechanism has a first state and a second state. In the first state, the return air inlet is connected to the ventilation outlet. In the first state, the thermal management system has a cooling and heat dissipation mode and a heating mode. In the cooling and heat dissipation mode, both the air inlet and the air outlet are open, the air inlet and the air outlet are connected, and both the air inlet and the air outlet can be connected to the environment outside the housing. In heating mode, both the air inlet and the air outlet are closed and not connected to the environment outside the housing; in the second state, the return air inlet is not connected to the ventilation outlet, both the air inlet and the air outlet are open, the return air inlet is connected to the air outlet, and the air inlet is connected to the ventilation outlet. When the ambient temperature is high, the compressor cooling mode is used and the airflow switching mechanism is in the first state. When the ambient temperature is low, the compressor does not work, and the airflow switching mechanism is in the second state; When the ambient temperature is lower, the compressor does not work, and the airflow switching mechanism is in the first state.

2. The thermal management system according to claim 1, characterized in that, The first fan is located next to the first heat exchanger. The thermal management system includes air ducts that communicate with the inner cavity and are also connected to the heat exchange demand unit receiving cavity. The heat exchange demand unit receiving cavity includes a battery unit receiving cavity, a control unit receiving cavity, a motion unit receiving cavity, and an interaction unit receiving cavity. There is at least one air duct, and at least one air duct is connected to the battery unit receiving cavity, the control unit receiving cavity, the motion unit receiving cavity, and the interaction unit receiving cavity. At least two of the battery unit receiving cavity, the control unit receiving cavity, the motion unit receiving cavity, and the interaction unit receiving cavity are connected, or the battery unit receiving cavity, the control unit receiving cavity, the motion unit receiving cavity, and the interaction unit receiving cavity are not connected to each other.

3. The thermal management system according to claim 1, characterized in that, The circulation loop includes a second heat exchanger and a throttling device, with the first heat exchanger, the compressor, the second heat exchanger, and the throttling device connected in series.

4. The thermal management system according to claim 3, characterized in that, The thermal management system includes a first air valve, which is located in the housing and is used to control the opening or closing of the ventilation opening.

5. The thermal management system according to claim 4, characterized in that, The return air vent is connected to the inner cavity. The thermal management system includes a second air valve, which is located in the housing and is used to control the... The return air vent is opened or closed, and the number of return air vents is at least one.

6. The thermal management system according to claim 5, characterized in that, The housing has an exhaust vent, and the heat exchange demand unit cavity is connected to the exhaust vent. The thermal management system also includes a third air valve, which is located in the housing and is used to control the opening or closing of the exhaust vent.

7. The thermal management system according to claim 6, characterized in that, The thermal management system has a natural heat dissipation mode. In the natural heat dissipation mode, the third air valve controls the opening of the exhaust port, and the exhaust port is connected to the environment outside the housing.

8. The thermal management system according to claim 6, characterized in that, The thermal management system includes a second fan located beside the second heat exchanger, with the air outlet facing the air outlet.

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