Fluid control component and thermal management system

Abstract

The present application discloses a fluid control assembly, comprising: a flow direction switching device, a first flow rate regulating device, and a first heat exchanger. The first flow rate regulating device and the flow direction switching device are respectively fixedly connected to the first heat exchanger. The first flow rate regulating device and the flow direction switching device are located on the same side in the length direction of the first heat exchanger. A part of the first heat exchanger is located between the first flow rate regulating device and the flow direction switching device. The first flow rate regulating device and the flow direction switching device are located on different sides in the thickness direction of the first heat exchanger. Through the above arrangement, on the premise of ensuring the compact cooperation of the flow direction switching device, the first flow rate regulating device, and the first heat exchanger, the first flow rate regulating device and the flow direction switching device are respectively cooperated with relatively large areas of the first heat exchanger, which can improve the connection reliability between the first flow rate regulating device and the first heat exchanger, and between the flow direction switching device and the first heat exchanger. The present application also provides a thermal management system.

Description

Technical Field

[0001] The present application relates to the technical field of thermal management, and particularly to a fluid control component and a thermal management system. Background Art

[0002] The thermal management system includes several components. The components used in the thermal management system are connected into a system through pipelines, and the relatively long pipelines will increase the fluid flow resistance. In the related art, the flow direction switching device and the flow rate regulating device are located on the same side in the thickness direction of the heat exchanger, and the flow direction switching device and the flow rate regulating device are located on the same side in the length direction of the heat exchanger. The flow direction switching device and the flow rate regulating device are respectively fixedly connected to the heat exchanger, and the three are close to each other to achieve a compact layout, which can omit the relatively long pipelines between the three and reduce the flow resistance of the thermal management system.

[0003] Since the flow direction switching device and the flow rate regulating device are located on the same side in the length direction of the heat exchanger, and the flow direction switching device and the flow rate regulating device cooperate with the same side wall in the thickness direction of the heat exchanger, the matching area between the flow direction switching device and the heat exchanger, and the matching area between the flow rate regulating device and the heat exchanger are relatively small. The inventor believes that the connection reliability between the flow direction switching device, the flow rate regulating device and the heat exchanger needs to be improved. Summary of the Invention

[0004] In view of the above problems existing in the related art, the present application provides a fluid control component and a thermal management system with better connection reliability.

[0005] To achieve the above object, the present application adopts the following technical solution: A fluid control component includes: a flow direction switching device, a first flow rate regulating device, and a first heat exchanger; the first flow rate regulating device and the flow direction switching device are located on the same side in the length direction of the first heat exchanger, a part of the first heat exchanger is located between the first flow rate regulating device and the flow direction switching device, the first flow rate regulating device is located on one side in the thickness direction of the first heat exchanger, the flow direction switching device is located on the other side in the thickness direction of the first heat exchanger, and the first flow rate regulating device and the flow direction switching device are respectively fixedly connected to the first heat exchanger; the first heat exchanger has a first flow channel, one end of the first flow channel is communicated with the inner cavity of the first flow rate regulating device, and the other end of the first flow channel is communicated with the inner cavity of the flow direction switching device.

[0006] In this application, the first flow regulating device and the flow direction switching device are respectively detachably assembled with the first heat exchanger. The first flow regulating device and the flow direction switching device are located on the same side in the length direction of the first heat exchanger, and on different sides in the thickness direction of the first heat exchanger. A part of the first heat exchanger is located between the first flow regulating device and the flow direction switching device. Through the above arrangement, on the premise of ensuring the compact cooperation of the flow direction switching device, the first flow regulating device and the first heat exchanger, the first flow regulating device and the flow direction switching device can respectively cooperate with relatively large areas of the first heat exchanger, which can improve the connection reliability between the first flow regulating device and the first heat exchanger, and between the flow direction switching device and the first heat exchanger.

[0007] To achieve the above object, this application adopts the following technical solution: A thermal management system includes a compressor, a second heat exchanger, a third heat exchanger, the second flow regulating device and the above-mentioned fluid control component; the compressor, the second heat exchanger, the third heat exchanger and the second flow regulating device are respectively connected to the fluid control component, and the inner cavities of the compressor, the second heat exchanger, the third heat exchanger and the second flow regulating device are respectively communicated with the inner cavity of the fluid control component.

[0008] In this application, a part of the first heat exchanger is located between the first flow regulating device and the flow direction switching device, and the first flow regulating device and the flow direction switching device are located on different sides in the thickness direction of the first heat exchanger, so that the first flow regulating device and the flow direction switching device can respectively cooperate with relatively large areas of the first heat exchanger, and the peripheral spaces of the first flow regulating device and the flow direction switching device are both large, which is beneficial to the assembly of the fluid control component with components such as the compressor, the second heat exchanger, the third heat exchanger and the second flow regulating device, and improves the connection reliability of the thermal management system. Description of the Drawings

[0009] Figure 1 is a schematic structural diagram of an embodiment of the fluid control component of this application;

[0010] Figure 2 is an exploded structural diagram of an embodiment of the fluid control component of this application;

[0011] Figure 3 is an exploded structural diagram of an embodiment of the fluid control component of this application from another angle;

[0012] Figure 4 is a sectional structural diagram of an embodiment of the fluid control component of this application;

[0013] Figure 5 is a sectional structural diagram of an embodiment of the fluid control component of this application;

[0014] Figure 6 It is a schematic cross-sectional structure diagram of an embodiment of the fluid control component of the present application;

[0015] Figure 7 It is a schematic connection diagram of an embodiment of the thermal management system of the present application;

[0016] Figure 8 It is a schematic connection diagram of the heating mode of an embodiment of the thermal management system of the present application;

[0017] Figure 9 It is a schematic connection diagram of the cooling mode of an embodiment of the thermal management system of the present application;

[0018] Figure 10 It is a schematic connection diagram of the heating and dehumidifying mode of an embodiment of the thermal management system of the present application;

[0019] Figures 11 to 15 It is a schematic connection diagram of other embodiments of the thermal management system of the present application. Detailed Description of the Embodiments

[0020] Here, exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0021] The terms used in the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The singular forms "a", "the" and "said" used in the present application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0022] It should be understood that the "first", "second" and similar terms used in the specification and claims of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. Similarly, the similar terms such as "one" or "a" do not represent a quantity limitation, but mean that there is at least one; "multiple" means a quantity of two or more. Unless otherwise specified, the similar terms such as "front part", "rear part", "lower part" and / or "upper part" are only for convenience of description and are not limited to a position or a spatial orientation. The terms "comprising" or "including" and similar terms mean that the elements or objects appearing before "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalents, and do not exclude other elements or objects.

[0023] The fluid control assembly of the exemplary embodiment of the present application will be described in detail below with reference to the accompanying drawings. Without conflict, the features in the following embodiments and implementation manners can be supplemented or combined with each other.

[0024] According to a specific embodiment of the fluid control assembly 100 of the present application, as Figures 1 to 6 shown, the fluid control assembly 100 includes a flow direction switching device 1, a first heat exchanger 2, and a first flow rate regulating device 3. The first flow rate regulating device 3 and the flow direction switching device 1 are respectively fixedly connected to the first heat exchanger 2. The first flow rate regulating device 3 and the flow direction switching device 1 are located on the same side in the length direction of the first heat exchanger 2. The first flow rate regulating device 3 is located on one side in the thickness direction of the first heat exchanger 2, and the flow direction switching device 1 is located on the other side in the thickness direction of the first heat exchanger 2. A part of the first heat exchanger 2 is located between the first flow rate regulating device 3 and the flow direction switching device 1.

[0025] Referring to Figure 6 , the flow direction switching device 1 includes a base 15, a switching part (not shown in the figure), and a seat part (not shown in the figure). An installation cavity is provided in the base 15. The switching part and the seat part are located in the installation cavity. The seat part is fixedly connected to the base 15. The switching part can slide relative to the seat part. A connection cavity is provided between the seat part and the switching part, and the position of the connection cavity changes as the switching part slides. In the main body part 301, the installation cavity is not communicated with the connection cavity.

[0026] The flow direction switching device 1 has a first interface 11, a second interface 12, a third interface 13, and a fourth interface 14. The first interface 11, the second interface 12, the third interface 13, and the fourth interface 14 are provided on the base 15. The first interface 11, the second interface 12, the third interface 13, and the fourth interface 14 are not communicated with each other on the outer surface of the base 15. The first interface 11, the second interface 12, the third interface 13, and the fourth interface 14 are communicated through the installation cavity and the connection cavity.

[0027] The first interface 11 and the side wall surrounding the first interface 11 form a first interface part. The second interface 12 and the surrounding of the second interface 12 form a second interface part. The third interface 13 and the side wall surrounding the third interface 13 form a third interface part. The fourth interface 14 and the side wall surrounding the fourth interface 14 form a fourth interface part. The first interface part, the second interface part, the third interface part, and the fourth interface part are used to connect with other components, so as to realize the communication between the inner cavity of the flow direction switching device 1 and the inner cavities of other components.

[0028] The switching part can move from the first position to the second position in the installation cavity and can also switch from the second position to the first position. When the switching part is in the first position, the flow direction switching device 1 is in the first working state, the first interface 11 and the second interface 12 are communicated through the installation cavity, and the third interface 13 and the fourth interface 14 are communicated through the connection cavity; when the switching part is in the second position, the flow direction switching device 1 is in the second working state, the first interface 11 and the fourth interface 14 are communicated through the installation cavity, but the second interface 12 and the third interface 13 are not communicated. Optionally, the opening of the third interface 13 is covered by the switching part, so that the second interface 12 and the third interface 13 are not communicated. In other alternative embodiments, when the switching part is in the first position, the first interface 11 and the second interface 12 are communicated through the installation cavity, and the third interface 13 and the fourth interface 14 are communicated; when the switching part is in the second position, the first interface 11 and the fourth interface 14 are communicated through the installation cavity, and the second interface 12 and the third interface 13 are communicated through the connection cavity. Optionally, the flow direction switching device 1 is a four-way valve, and the first interface 11, the second interface 12, the third interface 13, and the fourth interface 14 are the four interfaces of the four-way valve.

[0029] Referring to Figure 4 , the first flow regulating device 3 includes a main body part 301 and a regulating part 302. The main body part 301 has a first assembly cavity 10, a second assembly cavity 20, a first channel 34, a second channel 35, a third channel 36, a fourth channel 37, and a fifth channel 38. The regulating part 302 includes a first regulating component and a second regulating component. Part of the first regulating component is located in the first assembly cavity 10, and the first regulating component is hermetically connected to the main body part 301. The first regulating component divides the first assembly cavity 10 into a first upper chamber and a first lower chamber, and the first regulating component controls the communication and cut-off between the first upper chamber and the first lower chamber in the first installation cavity. At least part of the second regulating component is located in the second assembly cavity 20, and the second regulating component is hermetically connected to the main body part 301. The second regulating component divides the second assembly cavity 20 into a second upper chamber and a second lower chamber, and the second regulating component controls the communication and cut-off between the second upper chamber and the second lower chamber in the second installation cavity.

[0030] The first channel 34 is communicated with the first lower chamber, and both the second channel 35 and the third channel 36 are communicated with the second upper chamber. The fourth channel 37 communicates the first upper chamber and the second upper chamber, and the fifth channel 38 communicates the first lower chamber and the second lower chamber. Optionally, the first regulating component is a throttle valve spool component, and the first regulating component and the main body part 301 form a throttle valve 303 (referring to Figure 7 ). Optionally, the second regulating component is a check valve spool component, and the second regulating component and the main body part 301 form a check valve 304 (referring to Figure 7 ).

[0031] The first flow regulating device 3 has a fifth interface 31, a sixth interface 32, and a seventh interface 33. The fifth interface 31, the sixth interface 32, and the seventh interface 33 are provided on the main body portion 301. The fifth interface 31, the sixth interface 32, and the seventh interface 33 are not connected to each other on the outer surface of the main body portion 301. The fifth interface 31 is connected to the first channel 34, the sixth interface 32 is connected to the second channel 35, and the seventh interface 33 is connected to the third channel 36. In this embodiment, when the first flow regulating device 3 is applied to the system, according to different system working conditions, the fifth interface 31 can be used as an inlet or an outlet, the sixth interface 32 can be used as an inlet or an outlet, and the seventh interface 33 is used as an outlet.

[0032] The fifth interface 31 and the side wall surrounding the fifth interface 31 form a fifth interface portion. The sixth interface 32 and the surrounding of the sixth interface 32 form a sixth interface portion. The seventh interface 33 and the side wall surrounding the seventh interface 33 form a seventh interface portion. The fifth interface portion, the sixth interface portion, and the seventh interface portion are used to connect to other components, so as to realize the communication between the inner cavity of the first flow regulating device 3 and the inner cavities of other components.

[0033] When the fluid enters the main body portion 301 from the fifth interface 31 through the first channel 34, the first regulating component controls the cut-off between the first upper chamber and the first lower chamber, and the second regulating component controls the communication between the second upper chamber and the second lower chamber. The fluid flows through the first lower chamber, the fifth channel 38, and the second lower chamber in sequence, and then reaches the second upper chamber. The second regulating component only plays a role of communication, and no throttling occurs when the fluid flows from the second lower chamber to the second upper chamber. The fluid flowing into the second upper chamber can be divided into two paths. One path flows out of the main body portion 301 from the sixth interface 32 after flowing through the second channel 35, and the other path flows out of the main body portion 301 from the seventh interface 33 after flowing through the third channel 36. Whether the fluid flows out of the main body portion 301 from the sixth interface 32 or the seventh interface 33 can be controlled according to the system requirements.

[0034] When the fluid enters the main body portion 301 from the sixth interface 32 through the second channel 35, the first regulating component controls the communication between the first upper chamber and the first lower chamber, and the second regulating component controls the cut-off between the second upper chamber and the second lower chamber. The fluid flowing out of the second channel 35 can be divided into two paths. One path flows through the second upper chamber and the third channel 36, and then flows out of the main body portion 301 from the seventh interface 33. The other path flows through the second upper chamber, the fourth channel 37, the first upper chamber, the first lower chamber, and the first channel 34 in sequence, and then flows out of the main body portion 301 from the fifth interface 31.

[0035] The first regulating component functions as a throttle, and the fluid is throttled and depressurized when flowing from the first upper chamber to the first lower chamber. Whether the fluid flows out of the main body 301 from the fifth interface 31 or the seventh interface 33 can be controlled according to the system requirements. It should be understood that although the first lower chamber and the second lower chamber are connected through the fifth channel 38 at this time, since the pressure of the fluid in the second upper chamber is greater than the pressure of the fluid in the second lower chamber, the second upper chamber and the second lower chamber are not connected.

[0036] In some other embodiments, the first flow regulating device 3 only has one assembly cavity and one regulating component, and a part of the regulating component is located in the assembly cavity. The regulating component and the main body 301 form a two-way throttle valve 305 (refer to Figure 11 and Figure 12 ), which has the functions of conduction, cutoff, and two-way throttling. The sixth interface 32 and the seventh interface 33 are directly connected through the internal channel of the main body 301. The connection and cutoff between the fifth interface 31 and the sixth interface 32 are controlled by the regulating component, and the connection and cutoff between the fifth interface 31 and the seventh interface 33 are controlled by the regulating component.

[0037] In some other embodiments, refer to Figure 12 , the fifth interface 31 and the seventh interface 33 are directly connected through the internal channel of the main body 301. The connection and cutoff between the fifth interface 31 and the sixth interface 32 are controlled by the regulating component, and the connection and cutoff between the sixth interface 32 and the seventh interface 33 are controlled by the regulating component.

[0038] In this embodiment, the first heat exchanger 2 is a two-channel heat exchanger. The first heat exchanger 2 includes a first flow channel and a second flow channel that are not connected to each other, and the fluid in the first flow channel exchanges heat with the fluid in the second flow channel. Optionally, the first heat exchanger 2 is a plate heat exchanger. The first heat exchanger 2 has a first connection port 21, a second connection port 22, a third connection port 23, and a fourth connection port 24. The first flow channel is connected to the first connection port 21 and the second connection port 22, and the second flow channel is connected to the third connection port 23 and the fourth connection port 24.

[0039] In this embodiment, the first connection port 21 and the second connection port 22 are located on the same side of the first heat exchanger 2, the third connection port 23 and the fourth connection port 24 are located on the same side of the first heat exchanger 2, and the first connection port 21 and the second connection port 22 are located on one side in the length direction of the first heat exchanger 2, and the third connection port 23 and the fourth connection port 24 are located on the other side in the length direction of the first heat exchanger 2. The first connection port 21 is located on one side in the thickness direction of the first heat exchanger 2, the second connection port 22 is located on the other side in the thickness direction of the first heat exchanger 2, and the third connection port 23 and the fourth connection port 24 are located on the same side in the thickness direction of the first heat exchanger 2. In some other embodiments, the third connection port 23 and the fourth connection port 24 can be located on both sides in the thickness direction of the first heat exchanger 2 respectively.

[0040] The first connection port 21 and the side wall surrounding the first connection port 21 form a first connection port part, the second connection port 22 and the side wall surrounding the second connection port 22 form a second connection port part, the third connection port 23 and the side wall surrounding the third connection port 23 form a third connection port part, and the fourth connection port 24 and the side wall surrounding the fourth connection port 24 form a fourth connection port part. The first connection port part, the second connection port part, the third connection port part, and the fourth connection port part are used to connect with other components, so as to realize the communication between the first flow channel and the second flow channel and the inner cavities of other components.

[0041] The first heat exchanger 2 includes a first side wall 25 and a second side wall 26 located on both sides in the thickness direction respectively. The flow direction switching device 1 includes a first connection side part 16, and the first connection side part 16 is directly or indirectly fixedly connected to the first side wall 25. The first connection port 21 is provided on the first side wall 25, the second interface 12 is provided on the first connection side part 16, and the first connection port 21 communicates with the second interface 12. The first flow rate regulating device 3 includes a third connection side part 39, the third connection side part 39 is directly or indirectly fixedly connected to the second side wall 26, the second connection port 22 is provided on the second side wall 26, the sixth interface 32 is provided on the third connection side part 39, and the second connection port 22 communicates with the sixth interface 32. It can be understood that the first connection side part 16 and the first side wall 25 can be mutually attached and directly fixedly connected, or can be fixedly connected at intervals through a connecting plate or a connecting block; the third connection side part 39 and the second side wall 26 can be mutually attached and directly fixedly connected, or can be fixedly connected at intervals through a connecting plate or a connecting block, and the present application does not limit this. Refer to FIGS. 2 and Figure 3 The flow direction switching device 1 is provided with a connecting component, the first connection side part 16 and the second interface 12 are provided on the connecting component, the base part 15 of the flow direction switching device 1 is attached and fixedly connected to the connecting component, and the first side wall 25 is attached and fixedly connected to the connecting component.

[0042] The flow direction switching device 1 is located on one side of the first heat exchanger 2 in the thickness direction, and the first flow rate regulating device 3 is located on the other side of the first heat exchanger 2 in the thickness direction. The first connection side part 16 and the first side wall 25 can be fixedly connected through a relatively large area, and the third connection side part 39 and the second side wall 26 can be fixedly connected through a relatively large area, so as to improve the reliability of the connection. Moreover, the flow direction switching device 1 and the first flow rate regulating device 3 are arranged at intervals through the first heat exchanger 2, which can make the surrounding spaces of the flow direction switching device 1 and the first flow rate regulating device 3 relatively large, so as to facilitate the connection and assembly of the flow direction switching device 1 and the first flow rate regulating device 3 with other components of the thermal management system and reduce the possibility of interference between various components.

[0043] In some other embodiments, the fluid control assembly 100 further includes a gas-liquid separation assembly 4. The gas-liquid separation assembly 4 includes a block portion 41. The flow direction switching device 1, the first flow rate regulating device 3, and the first heat exchanger 2 are located on the same side in the thickness direction of the block portion 41. The block portion 41 has a plane perpendicular to the thickness direction of the block portion 41, and the thickness direction of the first heat exchanger 2 is parallel to this plane. It can be understood that the length direction or the width direction of the first heat exchanger 2 is parallel to or coincides with the thickness direction of the block portion 41.

[0044] The flow direction switching device 1 further includes a second connection side portion 19, and the third interface 13 is provided on the second connection side portion 19. The block portion 41 includes a fourth connection side portion 417, the fourth connection side portion 417 is arranged facing the second connection side portion 19, and the second connection side portion 19 is fixedly connected to the fourth connection side portion 417. The block portion 41 has a first channel 411, and the first channel 411 penetrates through both sides of the block portion 41 along the thickness direction of the block portion 41. One opening of the first channel 411 is formed on the fourth connection side portion 417, and the first channel 411 communicates with the third interface 13. With such an arrangement, the flow direction switching device 1, the first flow rate regulating device 3, and the first heat exchanger 2 can be placed on the block portion 41 to provide a supporting force, ensuring a compact layout of the components while improving the connection reliability.

[0045] The gas-liquid separation assembly 4 further includes a cylinder body 42, a guiding portion 43, and a spacing portion 44. The block portion 41 covers one end portion in the length direction of the cylinder body 42. The flow direction switching device 1, the first flow rate regulating device 3, and the first heat exchanger 2 are all located on the side of the block portion 41 away from the cylinder body 42, and the block portion 41 is hermetically connected to the cylinder body 42. The thickness direction of the block portion 41 is parallel to or coincides with the length direction of the cylinder body 42. The block portion 41 further has a second channel 412, and the second channel 412 is used for communicating with the outside of the fluid control assembly 100. The first channel 411 and the first channel 411 respectively communicate with the inner cavity of the cylinder body 42.

[0046] The flow guiding part 43 and the spacing part 44 are both located inside the inner cavity of the cylinder body 42. One end of the flow guiding part 43 is fixedly connected to the pore wall forming the second pore channel 412, and the inner cavity of the flow guiding part 43 communicates with the second pore channel 412 and the inner cavity of the cylinder body 42. The other end of the flow guiding part 43 is provided with an open end 45, and the open end 45 communicates with the inner cavity of the flow guiding part 43 and the inner cavity of the cylinder body 42. The spacing part 44 is fixedly connected to the block part 41, and the spacing part 44 is located between the block part 41 and the flow guiding part 43, and is used for spacing the opening of the first pore channel 411 and the opening of the open end 45. The open end 45 is arranged close to the bottom wall of the spacing part 44, and the end of the first pore channel 411 is close to the top wall of the spacing part 44. It can be understood that the fluid enters the gas-liquid separation assembly 4 from the first pore channel 411. Due to the arrangement of the spacing part 44, the fluid flowing in from the first pore channel 411 will impact on the top wall of the spacing part 44, and then flow into the inner cavity of the cylinder body 42. The liquid fluid sinks and is stored in the cylinder body 42, and the gaseous fluid floats up and enters the flow guiding part 43 from the open end 45, and then flows out of the gas-liquid separation assembly 4 from the second pore channel 412. The arrangement of the spacing part 44 can, on the one hand, enhance the gas-liquid separation effect through impact, and on the other hand, prevent the fluid flowing out of the first pore channel 411 from directly entering the open end 45. It can be understood that in this embodiment, the gas-liquid separation assembly 4 is used to realize the function of fluid gas-liquid separation, and the block part 41 can be used as a connecting component between the flow direction switching device 1 and the cylinder body 42.

[0047] In some possible embodiments, the block part 41 further has a third pore channel 413. The third pore channel 413 communicates with the outside of the fluid control assembly 100 and the inner cavity of the cylinder body 42, and the spacing part 44 is also located between the opening of the third pore channel 413 and the opening of the open end 45. In this embodiment, the opening of the first pore channel 411 and the opening of the third pore channel 413 are used as inlets, and the outlet of the second pore channel 412 is used as an outlet. Specifically, the end of the first pore channel 411 close to the outer surface in the block part 41 and the pore wall forming the pore channel are the first inlet part 414, the end of the third pore channel 413 close to the outer surface in the block part 41 and the pore wall forming the pore channel are the second inlet part 416, the end of the second pore channel 412 close to the outer surface in the block part 41 and the pore wall forming the pore channel are the first outlet part 415. The first inlet part 414, the second inlet part 416 and the first outlet part 415 are used for connecting and communicating with external pipelines or other components. The extending direction of the first pore channel 411 is parallel or coincident with the thickness direction of the block part 41, and the first pore channel 411 penetrates through both sides of the block part 41 along the thickness direction of the block part 41. The second inlet part 416 and the first outlet part 415 are both formed on the circumferential side of the block part 41. The second pore channel 412 penetrates through both sides of the side wall of the block part 41, the third pore channel 413 penetrates through both sides of the side wall of the block part 41, and the second pore channel 412 and the third pore channel 413 are not connected in the block part 41.

[0048] The block part 41 covers one end of the cylinder body 42 in the length direction. The flow direction switching device 1, the first flow rate regulating device 3, and the first heat exchanger 2 are all located on the side of the block part 41 away from the cylinder body 42. With this arrangement, the structure of the fluid control assembly 100 is relatively compact, the peripheral dimension of the fluid control assembly 100 is small, which is conducive to the assembly of the fluid control assembly 100 and the miniaturization of the system. The flow direction switching device 1 and the first flow rate regulating device 3 are respectively located on both sides of the first heat exchanger 2 in the thickness direction. The flow direction switching device 1, the first flow rate regulating device 3, and the first heat exchanger 2 are located on the same side of the block part 41 in the thickness direction, so that the flow direction switching device 1, the first flow rate regulating device 3, the first heat exchanger 2, and the block part 41 all have side walls facing outward. The peripheral spaces of the first flow rate regulating device 3, the first heat exchanger 2, and the block part 41 are relatively large, which is convenient for assembling with other components of the system.

[0049] According to a specific embodiment of the heat management system of the present application, as Figures 7 to 10 shown, the heat management system includes a fluid control assembly 100, a compressor 5, a second heat exchanger 6, a third heat exchanger 7, a second flow rate regulating device 8, and a heater core 9. The above components can be indirectly connected through pipelines or valve components between the components.

[0050] The fluid control assembly 100 is any one of the above embodiments. For the convenience of description, in this embodiment, the fluid control assembly 100 includes a flow direction switching device 1, a first flow rate regulating device 3, a first heat exchanger 2, a block part 41, and a gas-liquid separation assembly 4, and the first heat exchanger 2 is a double-flow heat exchanger as an example for illustration. The exposed connection parts of the fluid control assembly 100 after assembly include the first interface 11 and the fourth interface 14 of the flow direction switching device 1, the fifth interface 31 and the seventh interface 33 of the first flow rate regulating device 3, the third connection port 23 and the fourth connection port 24 of the first heat exchanger 2, and the second inlet part 416 and the first outlet part 415 of the block part 41. The above connection parts are used for assembling and connecting with the components in the system, so as to communicate with the inner cavities of the components in the system.

[0051] In this embodiment, the outlet of the compressor 5 is connected to the first interface 11 through a pipeline, and the fourth interface 14 is connected to the second port of the second heat exchanger 6 through a pipeline. The first port of the second heat exchanger 6 is connected to the fifth interface 31 through a pipeline, and the seventh interface 33 is connected to the second port of the second flow rate regulating device 8 through a pipeline. The first port of the second flow rate regulating device 8 is connected to the first port of the third heat exchanger 7 through a pipeline, and the second port of the third heat exchanger 7 is connected to the second inlet part 416 through a pipeline. The first port of the heater core 9 is connected to the third connection port 23 through a pipeline, and the second port of the heater core 9 is connected to the fourth connection port 24 through a pipeline.

[0052] The first flow regulating device 3 is a valve member having a conducting state, a throttling state, and a cut-off state. Optionally, the first flow regulating device 3 is an electronic expansion valve with a full-pass function, or an integrated component composed of at least two valve members. The second flow regulating device 8 is a valve member having a throttling state and a cut-off state. Optionally, the first flow regulating device 3 is an electronic expansion valve or a thermostatic expansion valve.

[0053] In this embodiment, an example is given in which the first flow regulating device 3 is an integrated component composed of two valve members, and the sixth interface 32 and the seventh interface 33 are directly connected in the main body 301. Specifically, referring to Figure 4 , the first flow regulating device 3 includes a main body 301 and a regulating part 302. The regulating part 302 includes a first regulating component and a second regulating component. The first regulating component and the main body 301 form a throttling unit 304, and the second regulating component and the main body 301 form a one-way unit 305. The throttling unit 304 and the one-way unit 305 are arranged in parallel. Under the same working conditions, the refrigerant flows through the throttling unit 304 or the one-way unit 305. The throttling unit 304 is a valve member having a throttling state and a cut-off state. Optionally, the throttling unit 304 is an electronic expansion valve or a thermostatic expansion valve. The one-way unit 305 has the function of conducting in the forward direction and blocking in the reverse direction. Specifically, the one-way unit 305 conducts in the direction from the fifth interface 31 to the seventh interface 33 and blocks in the direction from the seventh interface 33 to the fifth interface 31. Optionally, the one-way unit 305 is a one-way valve. In some other embodiments, the one-way unit 305 can be a cut-off valve, and the on-off is achieved by controlling the valve core.

[0054] The thermal management system provided by the embodiment of the present application can be applied to an electric vehicle, and the electric vehicle has an air conditioner box 200 for exchanging heat with the air in the passenger compartment. In this embodiment, the warm air core 9 and the third heat exchanger 7 are arranged in the air conditioner box 200. The warm air core 9 and the third heat exchanger 7 are used for heat exchange with the air in the air conditioner box 200. The third heat exchanger 7 is located on the downstream side of the warm air core 9 relative to the air flow. A fan is provided in the air conditioner box 200 to guide the flow of the air in the air conditioner box 200. The second heat exchanger 6 is arranged near the front air intake grille of the vehicle and can exchange heat with the air in the atmospheric environment. The warm air core 9, the second heat exchanger 6, and the third heat exchanger 7 are all air-cooled heat exchangers. The design principle of the air-cooled heat exchanger is well known to those skilled in the art and will not be elaborated in this application.

[0055] The first heat exchanger 2 does not directly exchange heat with the air in the air-conditioning box 200. In the first heat exchanger 2, the refrigerant exchanges heat with the coolant, and the coolant flows to the heater core 9 to exchange heat with the air in the air-conditioning box. Optionally, the first heat exchanger 2 can be one of a plate heat exchanger, a parallel-flow liquid-cooled heat exchanger, or other liquid-cooled heat exchangers. The first heat exchanger 2 includes a first heat exchange part 27 and a second heat exchange part 28. The first heat exchange part 27 and the second heat exchange part 28 can exchange heat. The first heat exchange part 27 has a first flow channel, and the second heat exchange part 28 has a second flow channel. The first flow channel and the second flow channel are isolated from each other and not connected. The first flow channel allows the refrigerant to flow through, and the second flow channel allows the coolant to flow through. The refrigerant can exchange heat with the coolant through the first heat exchanger 2.

[0056] The heat management system of this embodiment has multiple working modes, including a heating mode, a cooling mode, a heating and dehumidifying mode, etc. The heat management system of this embodiment is applicable not only to vehicles but also to other heat exchange systems that require heat management. For the convenience of description, the specification of this application takes a vehicle as an example for illustration.

[0057] When the ambient air temperature is relatively low and there is a heating demand in the passenger compartment, the vehicle operates in the heating mode. Refer to Figure 8 , the thick solid line represents the flow paths of the refrigerant and the coolant, and the arrows indicate the flow directions. The compressor 5 is turned on, the first flow regulating device 3 is in a throttling state, the second flow regulating device 8 is in a cut-off state, and the flow direction switching device 1 is in the first working state. The compressor 5, the fluid control assembly 100, and the second heat exchanger 6 are connected in a loop, and the second heat exchange part 28 of the first heat exchanger 2 is connected in a loop with the heater core 9. Specifically, the outlet of the compressor 5, the flow direction switching device 1, the first heat exchange part 27, the first flow regulating device 3, the second heat exchanger 6, the flow direction switching device 1, the gas-liquid separation assembly 4, and the inlet of the compressor 5 are connected in sequence to form a loop.

[0058] The high-temperature and high-pressure gaseous refrigerant flowing out of the compressor 5 enters the fluid control assembly 100 through the first interface 11. In the fluid control assembly 100, the refrigerant flows from the first interface 11 to the second interface 12, and then enters the first heat exchange part 27 through the first connection port 21. The refrigerant in the first heat exchange part 27 heats the coolant in the second heat exchange part 28, and the heated coolant flows to the heater core 9. The heater core 9 heats the surrounding air, and the heated air is blown into the passenger compartment under the guidance of the blower, realizing heating of the passenger compartment. The refrigerant flows out of the first heat exchange part 27 through the second connection port 22, and then flows into the first flow regulating device 3 from the sixth interface 32. The refrigerant flowing out of the first flow regulating device 3 after throttling and pressure reduction flows out of the fluid control assembly 100 through the fifth interface 31. The refrigerant flows into the second heat exchanger 6, and the refrigerant in the second heat exchanger 6 evaporates and absorbs heat, obtaining heat from the atmospheric environment. The refrigerant flowing out of the second heat exchanger 6 flows into the fluid control assembly 100 again through the fourth interface 14. In the fluid control assembly 100, the refrigerant flows from the fourth interface 14 to the third interface 13, and then enters the gas-liquid separation assembly 4 through the first inlet part 414 for gas-liquid separation. The gaseous refrigerant flows out of the fluid control assembly 100 through the first outlet part 415. The refrigerant flowing out of the fluid control assembly 100 flows back to the compressor 5, and the cycle repeats.

[0059] When the atmospheric environment temperature is relatively high and there is a refrigeration demand in the passenger compartment, the vehicle operates in the refrigeration mode. Refer to Figure 9 , the thick solid line represents the flow paths of the refrigerant and the coolant, the arrows indicate the flow directions, the compressor 5 is turned on, the first flow regulating device 3 is in the conducting state, the second flow regulating device 8 is in the throttling state, and the flow direction switching device 1 is in the second working state. The compressor 5, the second heat exchanger 6, the fluid control assembly 100, the second flow regulating device 8, and the third heat exchanger 7 are connected to form a loop. Specifically, the outlet of the compressor 5, the flow direction switching device 1, the second heat exchanger 6, the first flow regulating device 3, the second flow regulating device 8, the third heat exchanger 7, the gas-liquid separation assembly 4, and the inlet of the compressor 5 are sequentially connected to form a loop.

[0060] The high-temperature and high-pressure gaseous refrigerant flowing out of the compressor 5 enters the fluid control assembly 100 through the first interface 11. The refrigerant flows from the first interface 11 to the fourth interface 14, and then flows out of the fluid control assembly 100 from the fourth interface 14. The refrigerant flowing out of the fluid control assembly 100 flows into the second heat exchanger 6. The refrigerant in the second heat exchanger 6 releases heat to the atmospheric environment, and the temperature of the refrigerant decreases. The refrigerant flowing out of the second heat exchanger 6 enters the fluid control assembly 100 again through the fifth interface 31. At this time, the first flow regulating device 3 is in the conducting state, and the refrigerant flows through the first flow regulating device 3 but does not throttle down in pressure. The refrigerant flows out of the fluid control assembly 100 from the seventh interface 33 and is throttled down in pressure by the second flow regulating device 8, and the temperature of the refrigerant decreases again. The cooled refrigerant flows into the third heat exchanger 7. The refrigerant in the third heat exchanger 7 evaporates and absorbs heat, and the surrounding air temperature decreases. The air with decreased temperature is blown into the passenger compartment under the guidance of the blower, realizing the refrigeration of the passenger compartment. The refrigerant flowing out of the third heat exchanger 7 flows into the fluid control assembly 100 again through the second inlet part 416. The refrigerant enters the gas-liquid separation assembly 4 through the second inlet part 416 for gas-liquid separation. The gaseous refrigerant flows out of the fluid control assembly 100 through the first outlet part 415. The refrigerant flowing out of the fluid control assembly 100 flows back to the compressor 5, and the cycle repeats.

[0061] In this application, the first heat exchanger 2 is connected between the second interface 12 and the sixth interface 32. When the flow direction switching device 1 is in the second working state, the second interface 12 is not connected to the third interface 13, so that in the refrigeration mode, the refrigerant flowing out of the first flow regulating device 3 does not flow through the first heat exchanger 2, reducing the pressure loss of the refrigerant, thereby improving the energy efficiency of the system.

[0062] When there is a demand for heating and dehumidifying the passenger compartment, the vehicle operates in the heating and dehumidifying mode. Refer to Figure 10 , the thick solid line is the flow path of the refrigerant and the coolant, and the arrow indicates the flow direction. The compressor 5 is turned on, the first flow regulating device 3 is in the throttling state, the second flow regulating device 8 is in the throttling state, and the flow direction switching device 1 is in the first working state. The compressor 5, the fluid control assembly 100, and the second heat exchanger 6 are connected in a loop. The compressor 5, the fluid control assembly 100, the second flow regulating device 8, and the third heat exchanger 7 are connected in a loop. The second heat exchange part 28 and the heater core 9 are connected in a loop. Specifically, the outlet of the compressor 5, the flow direction switching device 1, the first heat exchange part 27, the first flow regulating device 3, the second heat exchanger 6, the flow direction switching device 1, the gas-liquid separation assembly 4, and the inlet of the compressor 5 are connected in sequence in a loop. The outlet of the compressor 5, the flow direction switching device 1, the first heat exchange part 27, the second flow regulating device 8, the third heat exchanger 7, the gas-liquid separation assembly 4, and the inlet of the compressor 5 are connected in sequence in a loop.

[0063] The high-temperature and high-pressure gaseous refrigerant flowing out of the compressor 5 enters the fluid control assembly 100 through the first interface 11. In the fluid control assembly 100, the refrigerant flows from the first interface 11 to the second interface 12, and then enters the first heat exchange part 27 through the first connection port 21. The refrigerant in the first heat exchange part 27 heats the coolant in the second heat exchange part 28, and the heated coolant flows to the heater core 9. The heater core 9 heats the surrounding air, and the heated air is blown into the passenger compartment under the guidance of the blower, realizing heating in the passenger compartment. The refrigerant flows out of the first heat exchange part 27 through the second connection port 22 and is divided into two paths. One path flows into the first flow regulating device 3 from the sixth interface 32, and the other path flows out of the fluid control assembly 100 from the seventh interface 33 and flows into the second flow regulating device 8. The flow path of the refrigerant after flowing into the first flow regulating device 3 is the same as that in the heating mode, and the flow path of the refrigerant after flowing into the second flow regulating device 8 is the same as that in the refrigeration mode. For relevant descriptions, please refer to the relevant content and will not be elaborated here. Finally, the refrigerant flows back to the compressor 5, and the cycle repeats.

[0064] In the air conditioner box 200, since the heater core 9 is located on the upstream side of the third heat exchanger 7, the humid air first flows through the third heat exchanger 7, and the moisture in the air condenses and precipitates when it meets the cold. The air is dried after flowing through the third heat exchanger. The dried air then flows through the heater core 9, and the air is heated. Under the action of the air flow, the heated and dried air is blown into the passenger compartment, thus realizing the function of heating and dehumidifying.

[0065] In some other embodiments, in the heating and dehumidifying mode, the first flow regulating device 3 is in the cut-off state, and the second flow regulating device 8 is in the throttling state. After the refrigerant flows out of the first heat exchange part 27 through the second connection port 22, it only flows out of the fluid control assembly 100 from the seventh interface 33 and flows to the second flow regulating device 8, and the second heat exchanger 6 does not participate in heat exchange.

[0066] In other embodiments of the thermal management system, refer to Figure 12 , the fifth interface 31 and the seventh interface 33 of the first flow regulating device 3 are directly connected in the block part 41. In the refrigeration mode, the first flow regulating device 3 is in the cut-off state, and the second flow regulating device 8 is in the throttling state. In the heating mode, the first flow regulating device 3 is in the throttling state, and the second flow regulating device 8 is in the cut-off state. In the heating and dehumidifying mode, the first flow regulating device 3 is in the throttling state or the cut-off state, and the second flow regulating device 8 is in the throttling state. In this embodiment, in the refrigeration mode, when the flow direction switching device 1 is in the second working state, the second interface 12 can be connected to the third interface 13. Since the first flow regulating device 3 is in the cut-off state, no refrigerant still flows through the first heat exchanger 2.

[0067] According to other embodiments of the thermal management system of the present application, refer to Figures 13 to 15, between the inlet of the compressor 5 and the third interface 13, between the second interface 12 and the first connection port 21, and between the second connection port 22 and the sixth interface 32, a valve device 400 is provided at at least one of the above three places. The valve device 400 is a valve member having a cut-off state and a conducting state. Optionally, the valve device 400 is a globe valve. In the refrigeration mode, the valve device 400 is in the cut-off state. In the heating mode and the heating and dehumidifying mode, the valve device 400 is in the conducting state. In this embodiment, in the refrigeration mode, when the flow direction switching device 1 is in the second working state, the second interface 12 can communicate with the third interface 13. Since the valve device 400 is in the cut-off state, no refrigerant still flows through the first heat exchanger 2. Optionally, the valve device 400 can be integrated with the fluid control assembly 100.

[0068] It should be noted that in this application, "sequential communication" only describes the sequential relationship of the connections between various devices, and there may be other devices between various devices, such as globe valves. The "connection" between two components in this application can be a direct connection or a connection through a pipeline. There can be only a pipeline between two components, or there can be a valve member or other components between them. Similarly, the "communication" between two components in this application can be a direct communication or a communication achieved through a pipeline. There can be only a pipeline communication between two components, or there can be a valve member or other components between them before communication.

[0069] This application also provides a control method for a thermal management system. The control method in this application is applied to the thermal management system of the above embodiment. The thermal management system further includes a control system 300, and the control system 300 can be used to control the working states of the components in the thermal management system.

[0070] Refer to Figure 7 , the control system 300 includes a controller and a plurality of sensors. The plurality of sensors can be used to obtain the working information of the first heat exchanger 2, the second heat exchanger 6, and the third heat exchanger 7. Optionally, the working information includes temperature. The controller is electrically connected to components such as the compressor 1, the first flow regulating device 3, the second flow regulating device 8, and the fan in the air conditioning box 200. The controller can be used to obtain the working information obtained by the sensors. The controller can be used to adjust the working states of the compressor 1, the first flow regulating device 3, the second flow regulating device 8, and the fan in the air conditioning box 200. The adjustment of the working state includes at least one of turning on the component, turning off the component, speed regulation, opening regulation, and power regulation. The controller can be used to execute the control method of the thermal management system.

[0071] The control method of the thermal management system includes:

[0072] Obtain the needs of the passengers and the working information obtained by the sensors;

[0073] According to the needs of passengers and the working information obtained from sensors, the controller adjusts the working states of various components in the thermal management system, enabling the thermal management system to execute a suitable air-conditioning operation mode, thereby achieving the thermal management of the passenger compartment.

[0074] The thermal management system further includes an interaction device. The controller is electrically connected to the interaction device, and the controller can obtain the needs of passengers through the interaction device, such as the target temperature or operation mode required by the passengers. Optionally, the interaction device can be the control panel of the electric vehicle. The air-conditioning operation modes include a refrigeration mode, a heating mode, and a heating and dehumidification mode. The connection states of the thermal management system in the refrigeration mode, heating mode, and heating and dehumidification mode can be referred to the previous description and will not be elaborated here.

[0075] In the related art, in the refrigeration mode, the refrigerant still needs to flow through the first heat exchanger 2. In a system where the first heat exchanger 2 includes a first flow channel and a second flow channel, the second flow channel is communicated with the heater core 9, and heat exchange occurs between the heater core 9 and the air in the air-conditioning box 200. Since the heater core 9 is located on the downwind side of the third heat exchanger 7, in the refrigeration mode, the air cooled by the third heat exchanger 7 will flow through the relatively high-temperature heater core 9 again, and the air temperature will increase, resulting in poor refrigeration effect. Therefore, by providing a damper between the heater core 9 and the third heat exchanger 7, and the damper is electrically connected to the controller of the control system 300, the damper is controlled to be closed in the refrigeration mode, so that the air after heat exchange with the third heat exchanger 7 does not flow through the heater core 9, thereby ensuring the refrigeration effect. In the present application, in the refrigeration mode, the refrigerant does not flow through the heater core 9, and no heat exchange occurs at the heater core 9 at this time. The damper can be omitted, which is beneficial to the miniaturization of the air-conditioning box 200. On the other hand, omitting a component that needs to be controlled can reduce the control difficulty of the thermal management system.

[0076] The above description is only a preferred embodiment of the present application and does not impose any form of limitation on the present application. Although the present application has been disclosed above with the preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the equivalent embodiments by using the above-disclosed technical content within the scope of the technical solution of the present application. However, as long as it does not depart from the technical content of the technical solution of the present application, any simple modification, equivalent change, and modification made to the above embodiments according to the technical essence of the present application still fall within the scope of the technical solution of the present application.

Claims

1. A fluid control component, characterized in that, Comprising: A flow direction switching device, a first flow rate regulating device, and a first heat exchanger; The first flow rate regulating device and the flow direction switching device are located on the same side in the length direction of the first heat exchanger. A part of the first heat exchanger is located between the first flow rate regulating device and the flow direction switching device. The first flow rate regulating device is located on one side in the thickness direction of the first heat exchanger, and the flow direction switching device is located on the other side in the thickness direction of the first heat exchanger. The first flow rate regulating device and the flow direction switching device are respectively detachably assembled with the first heat exchanger; The first heat exchanger has a first flow channel, one end of the first flow channel communicates with the inner cavity of the first flow rate regulating device, and the other end of the first flow channel communicates with the inner cavity of the flow direction switching device; The fluid control assembly further includes a block portion and a cylinder. The block portion covers one end portion in the length direction of the cylinder, and the block portion is hermetically connected to the cylinder. The flow direction switching device, the first flow rate regulating device, and the first heat exchanger are all located on the side of the block portion away from the cylinder. The block portion has a plane perpendicular to the length direction of the cylinder, and the thickness direction of the first heat exchanger is parallel to the plane; The block portion has a first pore channel that communicates the inner cavity of the cylinder with the inner cavity of the flow direction switching device; The block portion has a second pore channel for communicating with the outside of the fluid control assembly; The first heat exchanger further has a second flow channel that is not in communication with the first flow channel. The fluid located in the first flow channel can exchange heat with the fluid located in the second flow channel; The outlet and the inlet of the second flow channel are located on the same side in the length direction of the first heat exchanger, and the outlet and the inlet of the second flow channel are arranged away from the first flow rate regulating device and the flow direction switching device; 2. The fluid control assembly according to claim 1, wherein The fluid control assembly further includes a guiding portion located in the inner cavity of the cylinder. One end of the guiding portion is fixedly connected to the pore wall forming the second pore channel. The second pore channel communicates with the inner cavity of the guiding portion. The other end of the guiding portion is provided with an open end that is close to the block portion. The open end is spaced apart from the first pore channel, and the open end communicates the inner cavity of the guiding portion with the inner cavity of the cylinder; 3. A fluid control component according to claim 1, characterized in that, The flow direction switching device has a first interface, a second interface, a third interface, and a fourth interface. The flow direction switching device has a first working state and a second working state. When the flow direction switching device is in the first working state, the first interface communicates with the second interface, and the third interface communicates with the fourth interface. When the flow direction switching device is in the second working state, the first interface communicates with the fourth interface, and the second interface communicates with or is not in communication with the third interface; The first flow channel communicates with the second interface, and the first pore channel communicates with the third interface.

4. A fluid control component according to claim 3, characterized in that The flow direction switching device includes a first connection side portion and a second connection side portion. The second interface is provided on the first connection side portion, and the third interface is provided on the second connection side portion. The first connection side portion is detachably assembled with the first heat exchanger, and the second connection side portion is detachably assembled with the block portion.

5. A fluid control component according to claim 1, characterized in that, The first flow rate regulating device includes a main body portion and a regulating portion. At least a part of the regulating portion is located in the inner cavity of the main body portion. The main body portion has a fifth interface, a sixth interface, and a seventh interface. The sixth interface communicates with the first flow channel. The regulating portion controls the communication or cutoff between the fifth interface and the sixth interface. The seventh interface communicates with the fifth interface or the sixth interface. The first flow rate regulating device includes a third connection side portion. The third connection side portion is detachably assembled with the first heat exchanger, and the sixth interface is provided on the third connection side portion.

6. A fluid control assembly according to claim 4, wherein, The block portion includes a fourth connection side portion. The fourth connection side portion faces the second connection side portion. The opening of the first pore is located on the fourth connection side portion. The fourth connection side portion is detachably assembled with the second connection side portion.

7. A thermal management system, characterized in that, It includes a compressor, a second heat exchanger, a third heat exchanger, a second flow rate regulating device, and the fluid control assembly according to any one of claims 1-6. The compressor, the second heat exchanger, the third heat exchanger, and the second flow rate regulating device are respectively connected to the fluid control assembly. The inner cavities of the compressor, the second heat exchanger, the third heat exchanger, and the second flow rate regulating device are respectively communicated with the inner cavity of the fluid control assembly.

8. The thermal management system according to claim 7, characterized in that, The outlet of the compressor communicates with one interface of the flow direction switching device. One end of the first flow channel communicates with another interface of the flow direction switching device. The inlet of the compressor communicates with yet another interface of the flow direction switching device. One port of the second heat exchanger communicates with still another interface of the flow direction switching device. Another port of the second heat exchanger communicates with one interface of the first flow rate regulating device. The other end of the first flow channel communicates with another interface of the first flow rate regulating device. One port of the second flow rate regulating device communicates with yet another interface of the first flow rate regulating device or with another port of the second heat exchanger. The other port of the second flow rate regulating device communicates with one port of the third heat exchanger. The other port of the third heat exchanger communicates with the inlet of the compressor.

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