A thermal management device and vehicle

Abstract

This application discloses a thermal management device and a vehicle, belonging to the field of thermal management technology. The thermal management device in this application includes a flow channel plate and a valve core. The flow channel plate has a communicating valve cavity and multiple communicating holes. The valve core is rotatably disposed within the valve cavity and has a flow channel cavity. The valve core includes an end face with multiple flow channel ports communicating with the flow channel cavity. The valve core is configured to rotate relative to the flow channel plate, allowing the flow channel ports to selectively align and communicate with different communicating holes, thereby switching the fluid path. By placing the flow channel ports on the end face of the valve core, fluid can flow axially within the valve core, shortening the flow path, reducing abrupt changes in direction and eddy current generation, thereby reducing flow resistance and pressure loss. Furthermore, the valve core structure is more compact, reducing processing difficulty and manufacturing costs, which is beneficial for miniaturized design.

Description

Technical Field

[0001] This application relates to the field of thermal management technology, and more particularly to a thermal management device and vehicle. Background Technology

[0002] The valve cores of thermal management devices often employ a lateral opening or radial flow channel design. This means the flow channel opening is typically located on the circumferential sidewall of the valve core. Rotation of the valve core aligns the flow channel opening on the sidewall with the corresponding port on the valve body or flow channel plate, enabling the connection and switching of different pathways. However, placing the flow channel opening on the circumferential sidewall of the valve core results in a tortuous and lengthy flow path, increasing flow resistance. Summary of the Invention

[0003] This application provides a thermal management device aimed at solving the technical problems of tortuous and lengthy internal flow paths and increased flow resistance in valve cores.

[0004] Technical solution: The thermal management device disclosed in this application includes: A flow channel plate having a communicating valve chamber and a plurality of communicating holes; A valve core is rotatably disposed within the valve cavity. The valve core has a flow channel cavity and includes an end face. The end face is provided with a plurality of flow channel openings that communicate with the flow channel cavity. The valve core is configured to rotate relative to the flow channel plate, so that the flow channel opening can be selectively aligned and connected with different communication holes to achieve switching of the fluid passage.

[0005] In some embodiments, the flow channel cavity includes a first sub-cavity and a second sub-cavity that are independent of each other; At least two of the flow channels are connected to the first sub-cavity, and at least two other flow channels are connected to the second sub-cavity.

[0006] In some embodiments, the plurality of flow channels include a first flow channel, a second flow channel, a third flow channel, and a fourth flow channel. The first flow channel is disposed on the rotation axis of the valve core, and the second flow channel, the third flow channel, and the fourth flow channel are spaced apart and arranged around the first flow channel. The first flow channel and the second flow channel are both connected to the first sub-cavity, and the third flow channel and the fourth flow channel are both connected to the second sub-cavity.

[0007] In some embodiments, the second flow channel, the third flow channel, and the fourth flow channel are all fan-shaped.

[0008] In some embodiments, the thermal management device further includes a first seal, which is received within the valve cavity and sandwiched between the flow channel plate and the valve core.

[0009] In some embodiments, the flow channel plate includes a first annular portion, a second annular portion, and a plurality of connecting portions. The first annular portion surrounds the second annular portion and is concentrically arranged. The plurality of connecting portions surround the second annular portion at intervals and are located between the first annular portion and the second annular portion, respectively connecting the first annular portion and the second annular portion. The first annular portion, the second annular portion, and the connecting portions are used to form a plurality of communicating holes.

[0010] In some embodiments, the first annular portion, the second annular portion, and the connecting portion have a first surface on the side facing the valve core. A first groove is formed on the first surface. The first groove has a first opening and a second surface opposite to the first opening. A second groove is formed on the second surface. The second groove has a second opening. The width of the second opening is smaller than the width of the first opening. The first seal is embedded in the first groove and the second groove.

[0011] In some embodiments, the thermal management device further includes a mounting plate, a bearing, and a drive assembly. The mounting plate is disposed on the side of the valve core away from the end face and is connected to the flow channel plate, and covers the valve cavity. A through hole is provided on the mounting plate. The bearing is connected to the side of the mounting plate away from the valve core. The drive assembly is disposed on the side of the mounting plate away from the valve core. The valve core has a drive shaft on the side opposite to the end face. The drive shaft passes coaxially through the through hole and the shaft hole of the bearing, and is connected to the drive assembly for transmission.

[0012] In some embodiments, the mounting plate has a recessed groove on the side facing the valve core, the recessed groove surrounding and communicating with the through hole; The thermal management device further includes a second seal, which is housed within the recess and fitted onto the drive shaft.

[0013] This application also discloses a vehicle including a thermal management device as described in the above embodiments.

[0014] Beneficial Effects: The thermal management device in this embodiment includes a flow channel plate and a valve core. The flow channel plate has a communicating valve cavity and multiple communicating holes. The valve core is rotatably disposed within the valve cavity and has a flow channel cavity. The valve core includes an end face with multiple flow channel ports communicating with the flow channel cavity. The valve core is configured to rotate relative to the flow channel plate, allowing the flow channel ports to selectively align and communicate with different communicating holes to achieve fluid path switching. By placing the flow channel ports on the end face of the valve core, the fluid can flow axially inside the valve core, shortening the flow path, reducing abrupt changes in direction and eddy current generation, thereby reducing flow resistance and pressure loss. Secondly, the valve core structure is more compact and has a shorter axial dimension. Compared to opening holes on the circumferential sidewall, opening holes on the end face of the valve core is easier to process, reduces manufacturing costs, and is beneficial for miniaturization design. Furthermore, the end face seal replaces the original peripheral arc surface seal. The sealing surface is flat, which is easy to process, has more controllable precision, and has higher sealing reliability and less wear. At the same time, the layout of multiple flow channels on the end face is more flexible and easier to adapt to different flow path topologies.

[0015] Therefore, the embodiments of this application can possess all the technical features and effects described above, and will not be repeated here. Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0018] Figure 1 This is an exploded schematic diagram of the thermal management device according to an embodiment of this application; Figure 2 This is a top view of the thermal management device according to an embodiment of this application, and the valve core, mounting plate and drive assembly are not shown in the figure; Figure 3 This is an exploded view of the first seal, valve core, and mounting plate in the thermal management device of this application embodiment; Figure 4 This is a bottom view of the valve core in the thermal management device of this application embodiment; Figure 5 This is a half-sectional schematic diagram of the thermal management device according to an embodiment of this application; Figure 6 yes Figure 5A magnified view of a portion of point A in the middle; Figure 7 yes Figure 6 A magnified view of a portion of point B in the middle.

[0019] Explanation of reference numerals in the attached figures: 10. Flow channel plate; 100. Valve cavity; 101. Connecting hole; 20. Valve core; 200. Flow channel cavity; 201. End face; 202. Flow channel opening; 210. First sub-cavity; 220. Second sub-cavity; 203. First flow channel opening; 204. Second flow channel opening; 205. Third flow channel opening; 206. Fourth flow channel opening; 30. First seal; 110. First annular portion; 120. Second annular portion; 130. Connecting portion; 102. First surface; 103. First groove; 104. Second surface; 105. Second groove; 106. First groove opening; 107. Second groove opening; 40. Mounting plate; 50. Bearing; 60. Drive assembly; 401. Through hole; 230. Drive shaft; 402. Countersunk groove; 70. Second seal. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0021] In the description of this application, it should be understood that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In the description of this application, "multiple" means two or more, and "at least one" can refer to one, two, or more, unless otherwise explicitly specified. The terms "first," "second," and "third," etc., are only for the convenience of description and are used to name components or embodiments by number, and do not imply any order of importance between the components or embodiments.

[0022] As a preamble to the embodiments of this application, the disc multi-way valve, as an important fluid passage switching component, directly affects the efficiency, reliability, and compactness of the system. Disc multi-way valves in related technologies often employ a lateral opening or radial flow channel design for their valve cores. That is, the flow channel opening is typically located on the circumferential sidewall of the valve core. Rotation of the valve core aligns the flow channel opening on the sidewall with the corresponding port on the valve body or flow channel plate, enabling the connection and switching of different passages. However, with the flow channel opening located on the circumferential sidewall of the valve core, the fluid needs to transition from axial to radial flow within the valve core. This results in a tortuous flow path with frequent abrupt changes in direction, easily generating eddies and local resistance, leading to a long and winding flow path and increased flow resistance. Lateral flow channel designs require the machining of complex intersecting channels or radial passages inside the valve core, which is difficult and costly. Furthermore, the sealing of the lateral flow channel opening usually relies on a dynamic seal between the outer cylindrical surface of the valve core and the valve body bushing. The sealing surface is arc-shaped, requiring high machining precision, and long-term rotational friction easily leads to wear and leakage. At the same time, the sealing layout of multiple radial ports is more complex and less flexible.

[0023] In view of this, embodiments of this application provide a thermal management device aimed at solving at least one of the above-mentioned technical problems.

[0024] Please see Figure 1 and Figure 3 As shown, the thermal management device in this embodiment includes a flow channel plate 10 and a valve core 20. The flow channel plate 10 has a valve cavity 100 and multiple connecting holes 101. The valve core 20 is rotatably disposed within the valve cavity 100. The valve core 20 has a flow channel cavity 200 and includes an end face 201. The end face 201 is provided with multiple flow ports 202 communicating with the flow channel cavity 200. The valve core 20 is configured to rotate relative to the flow channel plate 10, so that the flow ports 202 selectively align and communicate with different connecting holes 101 to achieve switching of fluid passages. By setting the flow ports 202 on the end face 201 of the valve core 20, the fluid can flow axially inside the valve core 20, shortening the flow path, reducing abrupt changes in direction and eddy current generation, thereby reducing flow resistance and pressure loss. Secondly, the valve core 20 has a more compact structure and a shorter axial dimension. Compared to openings on the circumferential sidewalls, openings on the end face 201 of the valve core 20 are easier to process, reducing manufacturing costs and facilitating miniaturization. Furthermore, the end face 201 seal replaces the original circumferential arc surface seal. The sealing surface is flat, making it easier to process, with more controllable precision, higher sealing reliability, and less wear. At the same time, the layout of multiple flow ports 202 on the end face 201 is more flexible and easier to adapt to different flow path topologies.

[0025] In some embodiments, the valve core 20 includes a detachably connected end cap and a body, with the end face 201 located on the end cap (e.g., ...). Figure 1 (As shown).

[0026] Please see Figure 3 As shown, in some embodiments, the flow channel cavity 200 includes a first sub-cavity 210 and a second sub-cavity 220 that are independent of each other; at least two flow channel ports 202 communicate with the first sub-cavity 210, and at least two other flow channel ports 202 communicate with the second sub-cavity 220. It should be understood that the valve core 20 is internally equipped with a partition to divide the flow channel cavity 200 into the first sub-cavity 210 and the second sub-cavity 220, and there is no fluid communication between the first sub-cavity 210 and the second sub-cavity 220. The partition and the valve core 20 can be integrally formed. This structure allows the fluid to form two completely isolated flow paths within the valve core 20, thereby enabling flow path switching and control, enhancing the adaptability of the valve core 20 to complex fluid systems, and improving the accuracy and flexibility of flow distribution. Simultaneously, since the sub-cavities and flow channel ports 202 are integrated into the axial flow channel layout of the valve core 20, the tortuosity of the flow path is not increased, achieving multi-functional integration while maintaining the advantages of low flow resistance and compact structure.

[0027] Please see Figure 3 and Figure 4 As shown, in some embodiments, the plurality of flow channels 202 include a first flow channel 203, a second flow channel 204, a third flow channel 205, and a fourth flow channel 206. The first flow channel 203 is disposed on the rotation axis of the valve core 20, and the second flow channel 204, the third flow channel 205, and the fourth flow channel 206 are spaced apart and surround the first flow channel 203. The first flow channel 203 and the second flow channel 204 are both connected to the first sub-cavity 210, and the third flow channel 205 and the fourth flow channel 206 are both connected to the second sub-cavity 220. It should be understood that the flow channel 202 is an opening structure that penetrates the end cap of the valve core 20. By setting one sub-cavity in conjunction with two flow channels 202, one flow channel 202 is used to allow fluid to enter the sub-cavity, and the other flow channel 202 is used to allow fluid to flow out of the sub-cavity, thereby achieving switching control of the flow path. By rotating the valve core 20, not only can different branch flow paths be switched, but also, through the isolation design of the sub-cavities, the synchronous switching or cross control of two independent flow paths can be achieved on the same valve core 20. While maintaining the axial flow channel structure of the valve core 20 and without increasing flow resistance, the functional integration and control logic richness of the valve are significantly enhanced, making it particularly suitable for complex thermal management or fluid distribution systems that require grouping, synchronizing, or alternating control of multiple fluid streams.

[0028] Please see Figure 4As shown, in some embodiments, the second flow channel 204, the third flow channel 205, and the fourth flow channel 206 are all fan-shaped. The flow channels 202 are designed in a fan shape and arranged around the circular end face 201. By carefully designing the angle and spacing of each fan-shaped opening, the limited area of ​​the end face 201 can be maximized to accommodate more functional flow channels 202, which is beneficial for miniaturization and high-density integration. In some embodiments, the three fan-shaped flow channels 202 are the same size and have a central angle of 45°.

[0029] Please see Figure 4 As shown, in some embodiments, the angles between the second flow channel 204 and the third flow channel 205, and between the second flow channel 204 and the fourth flow channel 206, are equal, while the angle between the third flow channel 205 and the fourth flow channel 206 is smaller than the angle between the second flow channel 204 and the third flow channel 205. Specifically, the angle between the third flow channel 205 and the fourth flow channel 206 is 90°, and the angles between the second flow channel 204 and the third flow channel 205, and between the second flow channel 204 and the fourth flow channel 206, are both 135°. By positioning the second flow channel 204 away from the third flow channel 205 and the fourth flow channel 206, it is ensured that the valve core 20 can only align with a specific connecting hole 101 on the flow channel plate 10 when rotated to different angles, reducing the risk of misconnection. At the mechanical structure level, precise positioning and prevention of misconnection during flow path switching are achieved, enhancing the accuracy and reliability of control.

[0030] Please see Figure 1 , Figure 2 and Figure 3 As shown, in some embodiments, the thermal management device further includes a first seal 30, which is housed within the valve cavity 100 and sandwiched between the flow channel plate 10 and the valve core 20. The first seal 30, housed within the valve cavity 100, contacts and slides relative to the plane containing the flow channel opening 202 of the end face 201 of the valve core 20, thereby constructing a planar sealing interface and improving the reliability and durability of the seal. The planar sealing interface has a controllable contact area and uniform pressure distribution, making it easier to process to achieve high precision compared to an arc-shaped sealing surface, and resulting in more uniform wear, reducing the risk of leakage under long-term rotational conditions. Secondly, the above design simplifies the sealing structure and reduces costs. The planar seal has a simple structure, is easy to standardize in production and installation, and does not require complex radial sealing grooves or precision bushings, thus reducing the number of parts, assembly difficulty, and manufacturing costs. Furthermore, the first seal 30 provides a direct and efficient sealing environment for the flow channel opening 202 of the end face 201. The seal can be designed with an opening that matches the layout of the flow channel 202, exposing only the flow channel 202 that needs to be connected, while keeping the rest of the area sealed and isolated, thus achieving dynamic sealing and precise flow guidance between the flow channel 202 and the connecting hole 101 during the rotational alignment process.

[0031] Please see Figure 2 As shown, in some embodiments, the flow channel plate 10 includes a first annular portion 110, a second annular portion 120, and a plurality of connecting portions 130. The first annular portion 110 surrounds the second annular portion 120 and is concentrically arranged. The plurality of connecting portions 130 surround the second annular portion 120 at intervals and are located between the first annular portion 110 and the second annular portion 120, respectively connecting the first annular portion 110 and the second annular portion 120. The first annular portion 110, the second annular portion 120, and the connecting portions 130 are used to form a plurality of connecting holes 101. By forming a plurality of connecting holes 101 around the center and distributed at a specific angle by the first annular portion 110, the second annular portion 120, and the connecting portions 130, the circular area of ​​the flow channel plate 10 is maximized, so that the plurality of connecting holes 101 can be arranged in a compact and orderly manner in the corresponding area of ​​the valve core 20 end face 201. Moreover, the shape and size of each connecting hole 101 can be independently and flexibly customized by adjusting the width and curvature of the connecting portion 130 to adapt to the interface requirements of different pipelines. The first annular portion 110 and the second annular portion 120 form a double-ring reinforcing frame, while the multiple connecting portions 130 in the middle act as spoke-shaped supports and reinforcing ribs. The above structure improves the rigidity and deformation resistance of the entire flow channel plate 10 when subjected to fluid pressure, installation stress and thermal stress, and ensures the flatness of the sealing surface under long-term use, thereby improving the reliability of the seal.

[0032] In some embodiments, the flow channel plate 10 is manufactured as a single piece, such as by injection molding, casting or stamping, which enables the integrated production of complex flow channels and structural components, reduces the number of parts and subsequent assembly processes, and lowers production costs.

[0033] Please see Figure 5 , Figure 6 and Figure 7As shown, in some embodiments, the first annular portion 110, the second annular portion 120, and the connecting portion 130 have a first surface 102 on the side facing the valve core 20. A first groove 103 is formed on the first surface 102. The first groove 103 has a first opening 106 and a second surface 104 opposite to the first opening 106. A second groove 105 is formed on the second surface 104. The second groove 105 has a second opening 107, and the width of the second opening 107 is smaller than the width of the first opening 106. The first sealing member 30 is embedded in the first groove 103 and the second groove 105. It should be understood that the width of the first opening 106 refers to the dimension measured in the plane where the first surface 102 of the flow channel plate 10 is located, along the radial direction perpendicular to the rotation axis of the valve core 20. The width of the second opening 107 refers to the dimension measured in the plane where the second surface 104 of the flow channel plate 10 is located, along the radial direction perpendicular to the rotation axis of the valve core 20. It is important to understand that the first surface 102 and the second surface 104 are arranged in parallel.

[0034] By creating a composite groove structure with a stepped cross-section on the first surface 102 (such as... Figure 7 As shown, the wide-mouthed first groove 103 facilitates the initial placement and alignment of the seal, reducing assembly difficulty. Secondly, the narrow-mouthed second groove 105 forms a tight fit with the seal, effectively limiting the radial movement and deformation of the seal, ensuring its positional stability under the rotational friction of the valve core 20 and fluid pressure. Compared to a single-width sealing groove, the stepped groove can reduce seal creep and improve the uniformity of pressure distribution.

[0035] Please see Figure 1 and refer to Figure 5 and Figure 6As shown, in some embodiments, the thermal management device further includes a mounting plate 40, a bearing 50, and a drive assembly 60. The mounting plate 40 is disposed on the side of the valve core 20 away from the end face 201 and is connected to the flow channel plate 10, and covers the valve cavity 100. A through hole 401 is provided on the mounting plate 40. The bearing 50 is connected to the side of the mounting plate 40 away from the valve core 20. The drive assembly 60 is disposed on the side of the mounting plate 40 away from the valve core 20. A drive shaft 230 is provided on the side of the valve core 20 away from the end face 201. The drive shaft 230 coaxially passes through the through hole 401 and the shaft hole of the bearing 50, and is connected to the drive assembly 60 for transmission. The mounting plate 40 is connected to the flow channel plate 10 and covers the valve cavity 100, forming a closed and rigid valve core 20 mounting space to ensure that the axial position of the valve core 20 is fixed. The bearing 50 is a rolling bearing 50, which is located on the outside of the mounting plate 40. The drive shaft 230 of the valve core 20 passes through the through hole 401 of the mounting plate 40 and mates with the inner ring of the bearing 50. This arrangement moves the rotational support point of the valve core 20 outward, so that the valve core 20 is in a cantilevered or simply supported state within the valve cavity 100, which significantly reduces the frictional resistance and risk of uneven wear between the end face 201 of the valve core 20 and the first seal 30, ensuring smooth and precise rotation. The mounting plate 40, as the mounting base, integrates the bearing 50 seat, the drive assembly 60 mounting interface, and other functions, making the entire drive support module compact and highly rigid. At the same time, the drive assembly 60 is arranged on the outside of the mounting plate 40, reducing the risk of corrosion, contamination, or short circuits that fluid may cause to the motor, gears, and other drive components, significantly improving the environmental adaptability and service life of the drive system. It also facilitates the maintenance or replacement of the drive components without opening the fluid chamber, improving maintenance convenience and timeliness, and increasing maintenance efficiency.

[0036] Please see Figure 6 As shown, in some embodiments, the mounting plate 40 has a groove 402 on the side facing the valve core 20, the groove 402 surrounding and connecting to the through hole 401; the thermal management device also includes a second seal 70, which is received within the groove 402 and sleeved on the drive shaft 230. Through the cooperation of the groove 402 and the second seal 70, a tight radial seal is formed at the location where the drive shaft 230 passes through the mounting plate 40. This effectively reduces the risk of fluid in the valve cavity 100 leaking along the surface of the drive shaft 230 to the outside of the mounting plate 40, ensuring seal integrity and protecting external drive components from fluid erosion. The groove 402 provides precise mounting positioning and radial support for the second seal 70, preventing circumferential displacement or deformation during operation. Simultaneously, the groove 402 structure can accommodate and protect the seal from improper installation stress or external impacts. This design allows the seal to operate in a stable, controlled environment, thereby extending its service life and reducing maintenance requirements.

[0037] It is also important to understand that the second seal 70 is specifically responsible for the dynamic sealing at the drive shaft 230. It works in conjunction with the first seal 30 to form a multi-stage sealing system. The first seal 30 undertakes the main functions of sealing and switching between flow channels, while the second seal 70 is used to block possible axial leakage, thereby improving the sealing reliability of the entire thermal management device during long-term dynamic operation.

[0038] This application also discloses a vehicle including the thermal management device described above. Therefore, it can possess all the technical features and effects of the aforementioned thermal management device, which will not be repeated here.

[0039] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0040] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0041] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A thermal management device, characterized in that, include: The flow channel plate (10) has a valve chamber (100) and a plurality of connecting holes (101). The valve core (20) is rotatably disposed in the valve cavity (100). The valve core (20) has a flow channel cavity (200). The valve core (20) includes an end face (201). The end face (201) is provided with a plurality of flow channels (202) communicating with the flow channel cavity (200). The valve core (20) is configured to rotate relative to the flow channel plate (10) so that the flow channel port (202) is selectively aligned and connected with different of the communication holes (101) to achieve switching of the fluid passage.

2. The thermal management device according to claim 1, characterized in that, The flow channel cavity (200) includes a first sub-cavity (210) and a second sub-cavity (220) that are independent of each other; At least two of the flow channels (202) are connected to the first sub-cavity (210), and at least two other flow channels (202) are connected to the second sub-cavity (220).

3. The thermal management device according to claim 2, characterized in that, The plurality of flow channels (202) include a first flow channel (203), a second flow channel (204), a third flow channel (205) and a fourth flow channel (206). The first flow channel (203) is disposed on the rotation axis of the valve core (20), and the second flow channel (204), the third flow channel (205) and the fourth flow channel (206) are spaced apart and arranged around the first flow channel (203). The first flow channel (203) and the second flow channel (204) are both connected to the first sub-cavity (210), and the third flow channel (205) and the fourth flow channel (206) are both connected to the second sub-cavity (220).

4. The thermal management device according to claim 3, characterized in that, The second flow channel (204), the third flow channel (205) and the fourth flow channel (206) are all fan-shaped.

5. The thermal management device according to claim 1, characterized in that, The thermal management device further includes a first seal (30), which is housed in the valve cavity (100) and sandwiched between the flow channel plate (10) and the valve core (20).

6. The thermal management device according to claim 5, characterized in that, The flow channel plate (10) includes a first annular portion (110), a second annular portion (120), and a plurality of connecting portions (130). The first annular portion (110) surrounds the second annular portion (120) and is concentrically arranged. The plurality of connecting portions (130) surround the second annular portion (120) at intervals and are located between the first annular portion (110) and the second annular portion (120), and respectively connect the first annular portion (110) and the second annular portion (120). The first annular portion (110), the second annular portion (120), and the connecting portions (130) are used to form a plurality of communicating holes (101).

7. The thermal management device according to claim 6, characterized in that, The first annular portion (110), the second annular portion (120) and the connecting portion (130) have a first surface (102) on the side facing the valve core (20). A first groove (103) is provided on the first surface (102). The first groove (103) has a first opening (106) and a second surface (104) opposite to the first opening (106). A second groove (105) is provided on the second surface (104). The second groove (105) has a second opening (107). The width of the second opening (107) is smaller than the width of the first opening (106). The first sealing element (30) is embedded in the first groove (103) and the second groove (105).

8. The thermal management device according to claim 1, characterized in that, The thermal management device further includes a mounting plate (40), a bearing (50), and a drive assembly (60). The mounting plate (40) is disposed on the side of the valve core (20) away from the end face (201) and is connected to the flow channel plate (10), and covers the valve cavity (100). A through hole (401) is provided on the mounting plate (40). The bearing (50) is connected to the side of the mounting plate (40) away from the valve core (20). The drive assembly (60) is disposed on the side of the mounting plate (40) away from the valve core (20). The valve core (20) has a drive shaft (230) on the side opposite to the end face (201). The drive shaft (230) passes coaxially through the through hole (401) and the shaft hole of the bearing (50), and is connected to the drive assembly (60) for transmission.

9. The thermal management device according to claim 8, characterized in that, The mounting plate (40) has a groove (402) on the side facing the valve core (20), the groove (402) surrounds and communicates with the through hole (401). The thermal management device further includes a second seal (70), which is housed in the sink (402) and fitted onto the drive shaft (230).

10. A vehicle, characterized in that, Includes the thermal management device as described in any one of claims 1 to 9.

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