Valve device and thermal management system

Abstract

The utility model discloses a valve device and a thermal management system. The valve device comprises a first valve plate, and the first valve plate is provided with a clamping groove. The valve rod is provided with a convex rib, and the valve rod and the first valve plate are connected in a matched mode through the clamping groove and the convex rib, so that the first valve plate is driven to rotate synchronously when the valve rod rotates; the clamping groove axially extends inwards from one end face of the first valve plate, and one of the following conditions is met: the axial depth of the clamping groove is smaller than the axial thickness of the first valve plate; the minimum radial distance between the side wall of the clamping groove and the peripheral edge of the first valve plate is larger than zero. According to the valve device and the thermal management system, the protruding ribs can be accurately embedded into the clamping grooves, the first valve plate and the valve rod are connected in a matched mode through the clamping grooves and the protruding ribs, the phenomena of slippage, dislocation and the like can be avoided, the stable and reliable assembling relation between the first valve plate and the valve rod can be achieved, and the sealing performance of the valve device is improved. The valve rod can accurately control the rotating angle of the first valve plate, and the control precision of the valve device on the fluid flow is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a valve device and a thermal management system. Background Technology

[0002] Existing thermal management systems include valve devices. Each valve device consists of a valve disc and a valve stem. The valve stem is connected to the valve disc and, driven by a drive unit, rotates the valve disc. This rotation of the valve disc allows the valve device to control the flow rate of the fluid. Precise positioning between the valve disc and the valve stem is crucial to ensuring the rotational accuracy of the valve disc, thereby enabling precise flow control.

[0003] In existing valve devices, the valve stem and valve disc are positioned by a single pin, which has low positioning accuracy and cannot guarantee the rotation accuracy of the valve disc, thus affecting the valve device's flow control effect. Utility Model Content

[0004] This invention provides a valve device and a thermal management system, aiming to solve the problem of low positioning accuracy between valve stems in existing valve devices.

[0005] To achieve the above objectives, this utility model provides a valve device, which includes:

[0006] A first valve plate, the first valve plate having a groove;

[0007] A valve stem having a rib, wherein the valve stem and the first valve plate are connected through the slot and the rib, so that when the valve stem rotates, it drives the first valve plate to rotate synchronously.

[0008] The slot extends axially inward from one end face of the first valve piece and satisfies one of the following conditions:

[0009] The axial depth of the slot is less than the axial thickness of the first valve plate;

[0010] The minimum radial distance between the sidewall of the slot and the outer peripheral edge of the first valve plate is greater than zero.

[0011] As a further improvement of this utility model, the slot includes a first baffle and a second baffle that are arranged opposite to each other along the circumferential direction of the first valve plate. The intersection line of the plane where the first baffle is located and the plane where the second baffle is located coincides with the first axis, which is the common axis of the valve stem and the first valve plate.

[0012] As a further improvement of this utility model, the slot also includes a connecting wall that connects the first baffle and the second baffle, and the connecting wall is arc-shaped.

[0013] As a further improvement of this utility model, the valve device further includes a second valve plate, the first valve plate has a first communication port, the second valve plate has a second communication port, and the valve stem is used to drive the first valve plate to rotate relative to the second valve plate to adjust the communication area between the first communication port and the second communication port.

[0014] The first communication port extends through both ends of the first valve plate along the first axis direction. The valve stem is provided with a recessed portion, which is formed by recessing from the outer peripheral surface of the valve stem and communicates with the first communication port along the first axis direction.

[0015] As a further improvement of this utility model, two of the ribs and two of the slots are provided. The projections of the two ribs on the first plane are symmetrical about the second axis, and the projections of the recesses on the first plane are symmetrical about the second axis. The first plane is a plane perpendicular to the axial direction of the first valve plate, and the second axis intersects with the first axis and is perpendicular to the first axis.

[0016] As a further improvement of this utility model, the projections of the two card slots on the first plane are symmetrical about the second axis, and the projection of the first connecting port on the first plane is symmetrical about the second axis.

[0017] As a further improvement of this utility model, the valve device further includes a central shaft, which connects the valve stem and the first valve plate. The valve stem, the central shaft, and the first valve plate are coaxially arranged, and the slot is offset from the central shaft along the radial direction of the first valve plate.

[0018] As a further improvement of this utility model, the valve stem, the central shaft, and the first valve plate can be separated. The valve stem has a first insertion hole for the central shaft to be inserted, and the first valve plate has a second insertion hole for the central shaft to be inserted.

[0019] As a further improvement of this utility model, the first valve plate is integrally formed with the central shaft, and the valve stem is provided with a first insertion hole for the central shaft to be inserted.

[0020] As a further improvement of this utility model, the valve stem and the central shaft are integrally formed, and the first valve plate is provided with a second insertion hole for the central shaft to be inserted.

[0021] This utility model also provides a valve device, which includes:

[0022] A first valve plate, the first valve plate having a groove;

[0023] A valve stem having a rib, wherein the valve stem and the first valve plate are connected through the slot and the rib, so that when the valve stem rotates, it drives the first valve plate to rotate synchronously.

[0024] The valve device further includes a central shaft, which connects the valve stem and the first valve plate. The valve stem, the central shaft, and the first valve plate are coaxially arranged, and the slot is offset from the central shaft along the radial direction of the first valve plate.

[0025] As a further improvement of this utility model, the valve stem, the central shaft, and the first valve plate can be separated. The valve stem has a first insertion hole for the central shaft to be inserted, and the first valve plate has a second insertion hole for the central shaft to be inserted.

[0026] As a further improvement of this utility model, the first valve plate is integrally formed with the central shaft, and the valve stem is provided with a first insertion hole for the central shaft to be inserted.

[0027] As a further improvement of this utility model, the valve stem and the central shaft are integrally formed, and the first valve plate is provided with a second insertion hole for the central shaft to be inserted.

[0028] As a further improvement of this utility model, the valve device further includes a second valve plate, the first valve plate has a first communication port, the second valve plate has a second communication port, and the valve stem is used to drive the first valve plate to rotate relative to the second valve plate to adjust the communication area between the first communication port and the second communication port.

[0029] The first communication port extends through both ends of the first valve plate along the first axis direction. The valve stem is provided with a recessed portion, which is formed by recessing from the outer peripheral surface of the valve stem and communicates with the first communication port along the first axis direction.

[0030] As a further improvement of this utility model, at least two of the ribs and the slots are provided.

[0031] As a further improvement of this utility model, two of the ribs and two of the slots are provided. The projections of the two ribs on the first plane are symmetrical about the second axis, and the projections of the recesses on the first plane are symmetrical about the second axis. The first plane is a plane perpendicular to the axial direction of the first valve plate, and the second axis intersects with the first axis and is perpendicular to the first axis.

[0032] As a further improvement of this utility model, the projections of the two card slots on the first plane are symmetrical about the second axis, and the projection of the first connecting port on the first plane is symmetrical about the second axis.

[0033] As a further improvement of this utility model, the cross section of the central axis cut by a plane perpendicular to its axial direction is circular or fan-shaped.

[0034] As a further improvement of this utility model, the cross-section of the slot cut by a plane perpendicular to its axial direction is circular or fan-shaped.

[0035] This utility model also provides a thermal management system, which includes the valve device described above.

[0036] Beneficial effects:

[0037] In the valve device and thermal management system provided by this utility model, the rib can be precisely embedded into the slot. The first valve plate and the valve stem are connected to the rib through the slot, which can avoid slippage, misalignment and other phenomena. A stable and reliable assembly relationship can be achieved between the first valve plate and the valve stem. The valve stem can accurately control the rotation angle of the first valve plate, ensuring the control accuracy of the valve device on the fluid flow. Attached Figure Description

[0038] Figure 1 A cross-sectional view of the valve device provided in the first embodiment of this utility model;

[0039] Figure 2 This is an exploded view of the valve device provided in the first embodiment of the present invention;

[0040] Figure 3 for Figure 1 A three-dimensional structural diagram of the valve stem;

[0041] Figure 4 for Figure 1 Top view of the first valve plate;

[0042] Figure 5 for Figure 1 Bottom view of the valve stem;

[0043] Figure 6 A top view of the first valve plate in the valve device provided in the second embodiment of this utility model;

[0044] Figure 7 A cross-sectional view of the valve device provided in the third embodiment of this utility model;

[0045] Figure 8 This is an exploded view of the valve device provided in the third embodiment of the present invention;

[0046] Figure 9 for Figure 7 A three-dimensional structural diagram of the valve stem;

[0047] Figure 10 for Figure 7Top view of the first valve plate;

[0048] Figure 11 for Figure 7 Bottom view of the valve stem;

[0049] Figure 12 A top view of the first valve plate and the central shaft in a valve device provided in one embodiment of the present invention;

[0050] Figure 13 A top view of the first valve plate and the central shaft in a valve device provided in another embodiment of the present invention;

[0051] Figure 14 A top view of the first valve plate and the central shaft in a valve device provided in another embodiment of the present invention;

[0052] Figure 15 A top view of the first valve plate and the central shaft in a valve device provided in another embodiment of the present invention.

[0053] In the picture:

[0054] 100. Valve device;

[0055] 10. First valve plate; 11. First connecting port; 12. Second insertion hole;

[0056] 20. Valve stem; 21. Recess; 22. First insertion hole;

[0057] 30. Convex ribs;

[0058] 40. Slot; 41. First baffle; 42. Second baffle; 43. Connecting wall;

[0059] 50. Second valve plate; 51. Second connecting port;

[0060] 60. Central axis;

[0061] S, the first axis;

[0062] L, the second axis. Detailed Implementation

[0063] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any modifications to the mechanism, method, or function made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0064] The terms used herein, such as "up," "down," "left," "right," "front," and "back," indicating spatial relative position, are for illustrative purposes to describe the relationship of one feature relative to another, as shown in the accompanying drawings. It is understood that, depending on the product's placement, these terms may be intended to include different orientations besides those shown in the figures, and should not be construed as limiting the claims. Furthermore, the descriptive term "horizontal" used herein is not entirely equivalent to being perpendicular to the direction of gravity, and allows for a certain angle of inclination.

[0065] like Figure 1-5 As shown, the first embodiment of this utility model provides a valve device 100. This valve device 100 can be used in a thermal management system to control the flow rate of a flow path within the thermal management system.

[0066] The valve device 100 includes a first valve plate 10 and a valve stem 20. The first valve plate 10 has a groove 40, and the valve stem 20 has a rib 30. The valve stem 20 and the first valve plate 10 are engaged through the groove 40 and the rib 30. When the valve stem 20 rotates, it can drive the first valve plate 10 to rotate synchronously. After the first valve plate 10 of the valve device 100 rotates, the state of the valve device 100 will change accordingly. For example, the flow rate of the fluid that can pass through the valve device 100 will change with the rotation of the first valve plate 10.

[0067] The slot 40 extends axially inward from one end face of the first valve plate 10, and its axial depth is less than the axial thickness of the first valve plate 10. The slot 40 is a "blind hole" and does not completely penetrate the first valve plate 10.

[0068] In this embodiment, the rib 30 can be precisely embedded into the slot 40. The first valve plate 10 and the valve stem 20 are connected to the rib 30 through the slot 40, which can avoid slippage, misalignment and other phenomena. A stable and reliable assembly relationship can be achieved between the first valve plate 10 and the valve stem 20. The valve stem 20 can accurately control the rotation angle of the first valve plate 10, ensuring the control accuracy of the valve device 100 on the fluid flow rate.

[0069] In this embodiment, the slot 40 is recessed from the outer peripheral surface of the first valve plate 10 and is located at the edge of the first valve plate 10.

[0070] The slot 40 includes a first baffle 41 and a second baffle 42 disposed opposite to each other along the circumferential direction of the first valve plate 10, and the intersection line of the plane containing the first baffle 41 and the plane containing the second baffle 42 coincides with the first axis S. The first axis S is the common axis of the valve stem 20 and the first valve plate 10. When the valve stem 20 drives the first valve plate 10 to rotate, both rotate around the first axis S.

[0071] When the rib 30 engages with the slot 40, it contacts the first baffle 41 and the second baffle 42. The intersection of the plane containing the first baffle 41 and the plane containing the second baffle 42 coincides with the first axis S, which can ensure the positional accuracy of the valve stem 20 and the first valve plate 10 in the circumferential direction of the first valve plate 10. This allows the valve stem 20 to accurately control the rotation angle of the first valve plate 10, thereby ensuring that the valve device 100 can accurately control the fluid flow.

[0072] like Figure 4 As shown, the first valve plate 10 can be a circular valve plate, and the extended projections of the first baffle 41 and the second baffle 42 on the first plane intersect at the center of the projection of the outer contour of the first valve plate 10. The first plane is a plane perpendicular to the axial direction of the first valve plate 10.

[0073] The slot 40 also includes a connecting wall 43 that connects the first baffle 41 and the second baffle 42. The connecting wall 43 is arc-shaped. The arc-shaped connecting wall 43 allows the first baffle 41 to smoothly transition to the second baffle 42, thereby forming a continuous and naturally transitioned slot 40 profile, avoiding sharp angles or abrupt structural changes that would make the slot 40 difficult to process. The arc-shaped connecting wall 43 can also effectively disperse and alleviate stress concentration at the connection between the valve stem 20 and the first valve plate 10 (i.e., at the rib 30 and the slot 40), extending the service life of the valve device 100.

[0074] like Figure 1 and Figure 2 As shown, in this embodiment, the valve device 100 further includes a second valve plate 50. The first valve plate 10 has a first connecting port 11, and the second valve plate 50 has a second connecting port 51. The valve stem 20 is used to drive the first valve plate 10 to rotate relative to the second valve plate 50. When the first valve plate 10 and the second valve plate 50 rotate, the communication area between the first connecting port 11 and the second connecting port 51 can be adjusted.

[0075] When in use, the valve device 100 is located in the flow path, and the fluid in the flow path flows through the valve device 100 through the first connecting port 11 and the second connecting port 51. The flow rate of the fluid in the flow path can be adjusted by adjusting the connection area between the first connecting port 11 and the second connecting port 51. The larger the connection area between the first connecting port 11 and the second connecting port 51, the larger the flow rate of the flow path, and the smaller the connection area between the first connecting port 11 and the second connecting port 51, the smaller the flow rate of the flow path.

[0076] The first connecting port 11 extends through both ends of the first valve plate 10 along the first axis S. The valve stem 20 is provided with a recessed portion 21, which is formed by recessing from the outer periphery of the valve stem 20 and connects to the first connecting port 11 along the first axis S.

[0077] A recessed portion 21 is provided on the valve stem 20 to prevent the valve stem 20 from blocking the fluid. The fluid can flow smoothly into the first communication port 11 through the recessed portion 21, ensuring the smooth flow of the fluid.

[0078] In this embodiment, two ribs 30 are provided on the valve stem 20, and two slots 40 are provided on the first valve plate 10. The arrangement of the two ribs 30 and the two slots 40 can ensure the accuracy and stability of the connection between the valve stem 20 and the first valve plate 10.

[0079] The projections of the two protruding ribs 30 onto the first plane are symmetrical about the second axis L, and the projection of the recessed portion 21 onto the first plane is also symmetrical about the second axis L. Thus, the two protruding ribs 30 and the recessed portion 21 are symmetrically arranged on the valve stem 20, resulting in a uniform and reasonable structural distribution. When the valve stem 20 drives the first valve plate 10 to rotate, the first valve plate 10 can be evenly stressed, thereby rotating stably.

[0080] In this paper, the first plane is a plane perpendicular to the axial direction of the first valve plate 10, and the second axis L intersects with and is perpendicular to the first axis S.

[0081] Furthermore, the projections of the two slots 40 onto the first plane are symmetrical about the second axis L, and the projection of the first connecting port 11 onto the first plane is also symmetrical about the second axis L. Thus, the two slots 40 and the first connecting port 11 are arranged symmetrically on the first valve plate 10, resulting in a uniform and reasonable structural distribution.

[0082] In other embodiments of this utility model, the number of protruding ribs 30 may be three or more, and the number of slots 40 may be three or more, which is not limited here.

[0083] like Figure 7-11 As shown, in this embodiment, the valve device 100 further includes a central shaft 60, which connects the valve stem 20 and the first valve plate 10. The valve stem 20, the central shaft 60, and the first valve plate 10 are coaxially arranged, and the slot 40 is offset from the central shaft 60 along the radial direction of the first valve plate 10.

[0084] Under the action of the central shaft 60, the axes of the valve stem 20 and the first valve plate 10 can be kept coincident. On this basis, through the cooperation of the rib 30 and the groove 40, the relative positional relationship between the valve stem 20 and the first valve plate 10 can be kept stable. In this way, the valve stem 20 can accurately control the rotation angle of the first valve plate 10, and the valve device 100 can accurately control the fluid flow.

[0085] In this embodiment, the valve stem 20, the central shaft 60, and the first valve plate 10 are separable. The valve stem 20 has a first insertion hole 22 for the central shaft 60 to be inserted, and the first valve plate 10 has a second insertion hole 12 for the central shaft 60 to be inserted. After the two ends of the central shaft 60 are inserted into the first insertion hole 22 and the second insertion hole 12 respectively, the axes of the valve stem 20 and the first valve plate 10 can be kept aligned. The separability of the valve stem 20, the central shaft 60, and the first valve plate 10 facilitates their later maintenance and replacement.

[0086] In other embodiments of this utility model, the valve stem 20, the central shaft 60, and the first valve plate 10 may be configured as follows: the first valve plate 10 is integrally formed with the central shaft 60, and the valve stem 20 is provided with a first insertion hole 22 for the central shaft 60 to be inserted.

[0087] The first valve plate 10 and the central shaft 60 are integrally formed, and can be manufactured together, which makes the manufacturing of the valve device 100 easier and ensures that the relative position between the first valve plate 10 and the central shaft 60 remains stable. Based on the above, the central shaft 60 is inserted into the first insertion hole 22, which allows the axes of the valve stem 20 and the first valve plate 10 to be aligned.

[0088] In other embodiments of this utility model, the valve stem 20, the central shaft 60, and the first valve plate 10 may be configured as follows: the valve stem 20 and the central shaft 60 are integrally formed, and the first valve plate 10 is provided with a second insertion hole 12 for the central shaft 60 to be inserted.

[0089] The valve stem 20 and the central shaft 60 are integrally formed, allowing them to be manufactured together. This makes the manufacturing of the valve device 100 easier and ensures that the relative position between the valve stem 20 and the central shaft 60 remains stable. Furthermore, the central shaft 60 is inserted into the second insertion hole 12, ensuring that the axes of the valve stem 20 and the first valve plate 10 are aligned.

[0090] like Figure 6 As shown, in the second embodiment provided by this utility model, the slot 40 satisfies the following condition: the minimum radial distance between the side wall of the slot 40 and the outer peripheral edge of the first valve plate 10 is greater than zero.

[0091] In this embodiment, the rib 30 and the slot 40 have sufficient mating area. After the valve stem 20 and the first valve plate 10 are connected through the rib 30 and the slot 40, the valve stem 20 can accurately drive the first valve plate 10 to rotate, thereby enabling the valve device 100 to accurately control the fluid flow rate.

[0092] Other features of this embodiment can be found in the first embodiment described above, and will not be repeated here.

[0093] like Figure 7-11 The third embodiment of the present invention is shown. In the third embodiment, the valve device 100 includes a first valve plate 10 and a valve stem 20. The first valve plate 10 has a groove 40, and the valve stem 20 has a rib 30. The valve stem 20 and the first valve plate 10 are connected through the groove 40 and the rib 30. When the valve stem 20 rotates, it can drive the first valve plate 10 to rotate synchronously.

[0094] The valve device 100 also includes a central shaft 60, which connects the valve stem 20 and the first valve plate 10. The valve stem 20, the central shaft 60, and the first valve plate 10 are coaxially arranged, and the slot 40 is offset from the central shaft 60 along the radial direction of the first valve plate 10.

[0095] Under the action of the central shaft 60, the axes of the valve stem 20 and the first valve plate 10 can be kept coincident. On this basis, through the cooperation of the rib 30 and the groove 40, the relative positional relationship between the valve stem 20 and the first valve plate 10 can be kept stable. In this way, the valve stem 20 can accurately control the rotation angle of the first valve plate 10, and the valve device 100 can accurately control the fluid flow.

[0096] In this embodiment, the valve stem 20, the central shaft 60, and the first valve plate 10 are separable. The valve stem 20 has a first insertion hole 22 for the central shaft 60 to be inserted, and the first valve plate 10 has a second insertion hole 12 for the central shaft 60 to be inserted. After the two ends of the central shaft 60 are inserted into the first insertion hole 22 and the second insertion hole 12 respectively, the axes of the valve stem 20 and the first valve plate 10 can be kept aligned. The separability of the valve stem 20, the central shaft 60, and the first valve plate 10 facilitates their later maintenance and replacement.

[0097] In other embodiments of this utility model, the valve stem 20, the central shaft 60, and the first valve plate 10 may be configured as follows: the first valve plate 10 is integrally formed with the central shaft 60, and the valve stem 20 is provided with a first insertion hole 22 for the central shaft 60 to be inserted.

[0098] The first valve plate 10 and the central shaft 60 are integrally formed, and can be manufactured together, which makes the manufacturing of the valve device 100 easier and ensures that the relative position between the first valve plate 10 and the central shaft 60 remains stable. Based on the above, the central shaft 60 is inserted into the first insertion hole 22, which allows the axes of the valve stem 20 and the first valve plate 10 to be aligned.

[0099] In other embodiments of this utility model, the valve stem 20, the central shaft 60, and the first valve plate 10 may be configured as follows: the valve stem 20 and the central shaft 60 are integrally formed, and the first valve plate 10 is provided with a second insertion hole 12 for the central shaft 60 to be inserted.

[0100] The valve stem 20 and the central shaft 60 are integrally formed, allowing them to be manufactured together. This makes the manufacturing of the valve device 100 easier and ensures that the relative position between the valve stem 20 and the central shaft 60 remains stable. Furthermore, the central shaft 60 is inserted into the second insertion hole 12, ensuring that the axes of the valve stem 20 and the first valve plate 10 are aligned.

[0101] like Figure 7 and Figure 8 As shown, in this embodiment, the valve device 100 further includes a second valve plate 50. The first valve plate 10 has a first connecting port 11, and the second valve plate 50 has a second connecting port 51. The valve stem 20 is used to drive the first valve plate 10 to rotate relative to the second valve plate 50. When the first valve plate 10 and the second valve plate 50 rotate, the communication area between the first connecting port 11 and the second connecting port 51 can be adjusted.

[0102] When in use, the valve device 100 is located in the flow path, and the fluid in the flow path flows through the valve device 100 through the first connecting port 11 and the second connecting port 51. The flow rate of the fluid in the flow path can be adjusted by adjusting the connection area between the first connecting port 11 and the second connecting port 51. The larger the connection area between the first connecting port 11 and the second connecting port 51, the larger the flow rate of the flow path, and the smaller the connection area between the first connecting port 11 and the second connecting port 51, the smaller the flow rate of the flow path.

[0103] The first connecting port 11 extends through both ends of the first valve plate 10 along the first axis S. The valve stem 20 is provided with a recessed portion 21, which is formed by recessing from the outer periphery of the valve stem 20 and connects to the first connecting port 11 along the first axis S.

[0104] A recessed portion 21 is provided on the valve stem 20 to prevent the valve stem 20 from blocking the fluid. The fluid can flow smoothly into the first communication port 11 through the recessed portion 21, ensuring the smooth flow of the fluid.

[0105] In this embodiment, two ribs 30 are provided on the valve stem 20, and two slots 40 are provided on the first valve plate 10. The arrangement of the two ribs 30 and the two slots 40 can ensure the accuracy and stability of the connection between the valve stem 20 and the first valve plate 10.

[0106] The projections of the two protruding ribs 30 onto the first plane are symmetrical about the second axis L, and the projection of the recessed portion 21 onto the first plane is also symmetrical about the second axis L. Thus, the two protruding ribs 30 and the recessed portion 21 are symmetrically arranged on the valve stem 20, resulting in a uniform and reasonable structural distribution. When the valve stem 20 drives the first valve plate 10 to rotate, the first valve plate 10 can be evenly stressed, thereby rotating stably.

[0107] In this paper, the first plane is a plane perpendicular to the axial direction of the first valve plate 10, and the second axis L intersects with and is perpendicular to the first axis S.

[0108] Furthermore, the projections of the two slots 40 onto the first plane are symmetrical about the second axis L, and the projection of the first connecting port 11 onto the first plane is also symmetrical about the second axis L. Thus, the two slots 40 and the first connecting port 11 are arranged symmetrically on the first valve plate 10, resulting in a uniform and reasonable structural distribution.

[0109] In other embodiments of this utility model, the number of protruding ribs 30 may be three or more, and the number of slots 40 may be three or more, which is not limited here.

[0110] The slot 40 extends axially inward from one end face of the first valve plate 10, and its axial depth is less than the axial thickness of the first valve plate 10. The slot 40 is a "blind hole" and does not completely penetrate the first valve plate 10.

[0111] In this embodiment, the rib 30 can be precisely embedded into the slot 40. The first valve plate 10 and the valve stem 20 are connected to the rib 30 through the slot 40, which can avoid slippage, misalignment and other phenomena. A stable and reliable assembly relationship can be achieved between the first valve plate 10 and the valve stem 20. The valve stem 20 can accurately control the rotation angle of the first valve plate 10, ensuring the control accuracy of the valve device 100 on the fluid flow rate.

[0112] In this embodiment, the slot 40 is recessed from the outer peripheral surface of the first valve plate 10 and is located at the edge of the first valve plate 10.

[0113] The slot 40 includes a first baffle 41 and a second baffle 42 disposed opposite to each other along the circumferential direction of the first valve plate 10, and the intersection line of the plane containing the first baffle 41 and the plane containing the second baffle 42 coincides with the first axis S. The first axis S is the common axis of the valve stem 20 and the first valve plate 10. When the valve stem 20 drives the first valve plate 10 to rotate, both rotate around the first axis S.

[0114] When the rib 30 engages with the slot 40, it contacts the first baffle 41 and the second baffle 42. The intersection of the plane containing the first baffle 41 and the plane containing the second baffle 42 coincides with the first axis S, which can ensure the positional accuracy of the valve stem 20 and the first valve plate 10 in the circumferential direction of the first valve plate 10. This allows the valve stem 20 to accurately control the rotation angle of the first valve plate 10, thereby ensuring that the valve device 100 can accurately control the fluid flow.

[0115] like Figure 10As shown, the first valve plate 10 can be a circular valve plate, and the extended projections of the first baffle 41 and the second baffle 42 on the first plane intersect at the center of the projection of the outer contour of the first valve plate 10. The first plane is a plane perpendicular to the axial direction of the first valve plate 10.

[0116] The slot 40 also includes a connecting wall 43 that connects the first baffle 41 and the second baffle 42. The connecting wall 43 is arc-shaped. The arc-shaped connecting wall 43 allows the first baffle 41 to smoothly transition to the second baffle 42, thereby forming a continuous and naturally transitioned slot 40 profile, avoiding sharp angles or abrupt structural changes that would make the slot 40 difficult to process. The arc-shaped connecting wall 43 can also effectively disperse and alleviate stress concentration at the connection between the valve stem 20 and the first valve plate 10 (i.e., at the rib 30 and the slot 40), extending the service life of the valve device 100.

[0117] like Figure 12-15 As shown, the cross-section of the central shaft 60 cut by a plane perpendicular to its axis is circular or fan-shaped, and the cross-section of the slot 40 cut by a plane perpendicular to its axis is circular or fan-shaped.

[0118] The cross-section of the central shaft 60 is circular or fan-shaped, which ensures the alignment of the valve stem 20 and the first valve plate 10 when they mate, thus guaranteeing the positioning accuracy between them. The shape of the rib 30 matches the shape of the groove 40, and the cross-section of the rib 30 is also circular or fan-shaped. This ensures the alignment of the rib 30 and the groove 40 when they mate, further guaranteeing the positioning accuracy between the valve stem 20 and the first valve plate 10.

[0119] In other embodiments of this invention, the cross-section of the central shaft 60 cut by a plane perpendicular to its axial direction is not limited to being circular or fan-shaped, but may also be other shapes. The cross-section of the slot 40 cut by a plane perpendicular to its axial direction is not limited to being circular or fan-shaped, but may also be other shapes.

[0120] This utility model also provides a thermal management system, which includes the valve device 100 described above. The thermal management system can be used in equipment such as new energy vehicles, and the valve device 100 is an important component of the thermal management system for controlling the flow of coolant.

[0121] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0122] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A valve device, comprising: a first valve plate having a clamping groove; a valve stem having a protruding rib, the valve stem and the first valve plate being coupled by the clamping groove and the protruding rib to enable the valve stem to rotate the first valve plate synchronously; characterized in that: the clamping groove extends axially inward from an end surface of the first valve plate, and satisfies one of the following conditions: an axial depth of the clamping groove is less than an axial thickness of the first valve plate; and a minimum radial distance between a side wall of the clamping groove and an outer peripheral edge of the first valve plate is greater than zero; the clamping groove comprises a first blocking wall and a second blocking wall oppositely arranged along a circumferential direction of the first valve plate, an intersection between a plane on which the first blocking wall lies and a plane on which the second blocking wall lies coincides with a first axis which is a common axis of the valve stem and the first valve plate; the clamping groove further comprises a connecting wall connecting the first blocking wall and the second blocking wall, the connecting wall is arc-shaped; the valve device further comprises a second valve plate, a first communication port is formed on the first valve plate, a second communication port is formed on the second valve plate, the valve stem is configured to drive the first valve plate to rotate relative to the second valve plate to adjust a communication area between the first communication port and the second communication port; the first communication port penetrates through both ends of the first valve plate along a direction of the first axis, the valve stem is provided with a recess, the recess is recessed from an outer peripheral surface of the valve stem and communicates with the first communication port along the direction of the first axis; the protruding rib and the clamping groove are provided with two, projections of the two protruding ribs on a first plane are symmetrical about a second axis, a projection of the recess on the first plane is symmetrical about the second axis, projections of the two clamping grooves on the first plane are symmetrical about the second axis, a projection of the first communication port on the first plane is symmetrical about the second axis; wherein the first plane is a plane perpendicular to an axial direction of the first valve plate, and the second axis intersects with the first axis and is perpendicular to the first axis. 6.A valve device, comprising: a first valve plate having a clamping groove; a valve stem having a protruding rib, the valve stem and the first valve plate being coupled by the clamping groove and the protruding rib to enable the valve stem to rotate the first valve plate synchronously; characterized in that: the valve device further comprises a central shaft connecting the valve stem and the first valve plate, the valve stem, the central shaft and the first valve plate are coaxially arranged, and the clamping groove is offset from the central shaft along a radial direction of the first valve plate; the valve stem, the central shaft and the first valve plate are arranged separately, the valve stem is provided with a first insertion hole for the central shaft to be inserted into, and the first valve plate is provided with a second insertion hole for the central shaft to be inserted into; alternatively, the first valve plate and the central shaft are integrally formed, and the valve stem is provided with a first insertion hole for the central shaft to be inserted into; alternatively, the valve stem and the central shaft are integrally formed, and the first valve plate is provided with a second insertion hole for the central shaft to be inserted into; the protruding rib and the clamping groove are provided with at least two. ​ ​ ​ ​ ​ 2. The valve device according to claim 1, characterized in that ​ 3. The valve device of claim 2, wherein ​ 4. The valve device of claim 2, wherein ​ ​ 5. The valve device of claim 4, wherein ​ ​ ​ ​ ​ ​ 7. The valve device of claim 6, wherein ​ ​ ​ 8. The valve device of claim 6, wherein ​ 9. Valve device according to any one of claims 6-8, characterized in that The center shaft is circular or sector-shaped in cross section when cut by a plane perpendicular to its axial direction, and the clamping slot is circular or sector-shaped in cross section when cut by a plane perpendicular to its axial direction.

10. A thermal management system characterized by, The valve device comprises the valve device according to any one of claims 1-9.

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