Valve device and thermal management system

Abstract

A valve device (10), comprising a valve body (20) and a valve core assembly (30) provided in the valve body. The valve body is provided with a plurality of external interfaces (210); and a fluid path passing through the valve core assembly is formed among the plurality of external interfaces. The valve core assembly comprises: a fixed valve member (310), wherein the fixed valve member is provided with a flow channel port, and the flow channel port is located on the fluid path; a movable valve member (320), wherein the movable valve member can be driven to rotate around a first axis, and the movable valve member can further be driven to move in the direction of the first axis, so as to at least partially close the flow channel port; and elastic members (330), wherein the elastic members are connected to one side of the movable valve member, so as to apply to the movable valve member an elastic force for abutting against the fixed valve member. The valve device can ensure that the movable valve member still can keep good contact with the fixed valve member even under a fluid impact, and can avoid displacement or separation of the movable valve member caused by change in a fluid pressure, thereby ensuring the accuracy of flow control. Further disclosed is a thermal management system comprising the valve device.

Description

Valve device and thermal management system

[0001] This application is based on the Chinese patent application with application number: 202410174480.7 and application date of February 7, 2024 and the Chinese patent application with application number: 202422655737.9 and application date of October 31, 2024, and claims the priority of these two Chinese patent applications, all contents of which are hereby introduced into this application as a reference. Technical Field

[0002] The present invention relates to the field of valve technology, and in particular to a valve device and a thermal management system. Background Art

[0003] With the rapid development of new energy vehicles, the technologies related to the vehicle's thermal management system are also gradually improving, which also means that there are higher requirements for the various valve bodies inside it, and the electronic expansion valve is an indispensable member of the thermal management system.

[0004] A flat-plate expansion valve is a new type of expansion valve that consists of two abutting valve plates, one of which is provided with a flow channel. By controlling the relative position of the two valve plates, and thereby the opening of the flow channel, flow control is achieved. However, because the valve plates are located within the fluid path of the valve device, they are subject to fluid impact, which can easily lead to failure of the abutment between the two valve plates, making it impossible to accurately control the flow channel opening.

[0005] Based on this, the present application provides a valve device and a thermal management system to improve the existing technology. Summary of the Invention

[0006] An object of the present invention is to provide a valve device and a thermal management system to solve the problem of failure of the abutment between valve plates caused by the impact of fluid on the valve plates.

[0007] In a first aspect, an embodiment of the present invention provides a valve device, comprising a valve body and a valve core assembly disposed within the valve body, wherein the valve body has a plurality of external interfaces, and a fluid path flowing through the valve core assembly is formed between the plurality of external interfaces, wherein the valve core assembly comprises:

[0008] a fixed valve member, the fixed valve member being provided with a flow passage opening, the flow passage opening being located on the fluid path;

[0009] a movable valve member, wherein the movable valve member can be driven to rotate about a first axis and can also be driven to move along the first axis to at least partially close the flow channel opening;

[0010] An elastic member is connected to one side of the movable valve member to apply an elastic force to the movable valve member to abut against the fixed valve member.

[0011] In some optional embodiments, the fixed valve member includes:

[0012] a first fixed valve plate, wherein the first fixed valve plate is provided with a first flow channel opening;

[0013] a second fixed valve plate, the second fixed valve plate being provided with a second flow channel opening, the first flow channel opening and the second flow channel opening being both located on the fluid path;

[0014] The first fixed valve plate and the second fixed valve plate are arranged at a distance from each other along the first axis direction, the movable valve member is located between the first fixed valve plate and the second fixed valve plate, and the movable valve member can be driven to move between the first fixed valve plate and the second fixed valve plate along the first axis direction to at least partially close the first flow channel opening and open the second flow channel opening, or at least partially close the second flow channel opening and open the first flow channel opening.

[0015] In some optional embodiments, the movable valve member is a movable valve plate, and the elastic member is arranged between the first fixed valve plate and the movable valve plate, or between the second fixed valve plate and the movable valve plate; the axis of the elastic member coincides with or is parallel to the first axis.

[0016] In some optional embodiments, the movable valve member includes a first movable valve plate and a second movable valve plate, wherein the first movable valve plate and the second movable valve plate are disposed between the first fixed valve plate and the second fixed valve plate;

[0017] The first movable valve plate and the second movable valve plate can be driven to move along the first axis between the first fixed valve plate and the second fixed valve plate, and a movable connection structure is provided between the first movable valve plate and the second movable valve plate to adjust the relative position of the first movable valve plate and the second movable valve plate in the first axis when the first movable valve plate is driven;

[0018] One of the first movable valve plate and the second movable valve plate can be driven to drive the other to rotate together around a first axis to adjust the size of an opening formed when the first movable valve plate or the second movable valve plate at least partially closes the corresponding flow channel opening;

[0019] The elastic member is disposed between the first movable valve plate and the second movable valve plate to press the first movable valve plate against the first fixed valve plate and / or to press the second movable valve plate against the second fixed valve plate.

[0020] In some optional embodiments, the movable connection structure includes at least one positioning pin, which is arranged along the circumferential direction of the movable valve plate and is arranged between the first movable valve plate and the second movable valve plate to limit the relative position of the first movable valve plate and the second movable valve plate in the rotation direction, and the positioning pin is movably connected to the first movable valve plate and / or the second movable valve plate.

[0021] In some optional embodiments, there are multiple elastic members, and they correspond one-to-one to the positioning pins. The elastic members are coaxially arranged with the positioning pins, or the elastic members are coaxially arranged with the first axis.

[0022] At least one of the first movable valve plate and the second movable valve plate is provided with a connecting groove that is cooperatively connected with the elastic member.

[0023] In some optional embodiments, one of the first movable valve plate and the second movable valve plate is provided with an inwardly recessed guide portion on a side facing the other, and the other is provided with a protrusion that cooperates with the first guide portion, the guide portion and the protrusion intersecting with the first axis, and the guide portion and the protrusion have the same cross-sectional shape and are both non-circular, so as to define the relative position of the first movable valve plate and the second movable valve plate in the rotation direction;

[0024] The raised portion is a hollow structure. A receiving chamber for receiving the elastic member is provided in the raised portion. One end of the elastic member extending out of the receiving chamber abuts against the bottom wall of the guide portion.

[0025] In some optional embodiments, a first positioning portion extending toward the elastic member to fix the elastic member is provided in the accommodating chamber, and / or a second positioning portion extending toward the elastic member to fix the elastic member is provided in the guide portion.

[0026] In some optional embodiments, one of the first movable valve plate and the second movable valve plate is provided with at least one protrusion extending toward the other, and the other is provided with a guide portion engaged with the protrusion to define the relative position of the first movable valve plate and the second movable valve plate in the rotation direction;

[0027] There are multiple elastic members, and the multiple elastic members are arranged between the first sub-valve plate and the second sub-valve plate along the circumferential direction of the movable valve plate, or the elastic members are arranged coaxially with the first axis;

[0028] At least one of the first movable valve plate and the second movable valve plate is provided with a connecting groove that is cooperatively connected with the elastic member.

[0029] In some optional embodiments, the elastic member is any one of a spring, a corrugated spring washer and a rubber washer.

[0030] To achieve one of the above-mentioned objectives of the invention, an embodiment of the present invention provides a thermal management system, comprising a valve device as described in any one of the above-mentioned items.

[0031] Compared with the conventional technology, the present invention has the following beneficial effects: by connecting an elastic member to the movable valve member, a continuous elastic force can be applied to the movable valve member against the fixed valve member to ensure that the movable valve member can maintain good contact with the fixed valve member even under fluid impact, and prevent the movable valve member from being displaced or separated due to changes in fluid pressure, thereby ensuring the accuracy of flow control. At the same time, by setting the movable valve member to rotate around the first axis and also to move along the first axis, the movable valve member can not only adjust the opening of the corresponding flow channel by rotation, but also more accurately control the degree of closure of the flow channel by axial movement. Such a dual-action setting improves the flexibility and accuracy of fluid flow control and can solve the problem of two-way circulation of fluid. It is particularly suitable for use in the thermal management system of new energy vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG1 is a schematic diagram of the overall structure of a valve device provided by one embodiment of the present invention;

[0033] FIG2 is a schematic cross-sectional view of the valve device shown in FIG1 ;

[0034] FIG3 is a schematic diagram of the overall structure of a valve device provided by another embodiment of the present invention;

[0035] FIG4 is a schematic cross-sectional view of the valve device shown in FIG3 ;

[0036] FIG5 is a schematic cross-sectional view of a valve device according to another embodiment of the present invention;

[0037] FIG6 is a partial enlarged view of the movable valve member in FIG5;

[0038] FIG7 is a schematic diagram of a deformed structure of the movable valve member in FIG6;

[0039] FIG8 is a schematic cross-sectional view of a valve device according to another embodiment of the present invention;

[0040] FIG9 is a schematic cross-sectional view of a valve device according to another embodiment of the present invention;

[0041] FIG10 is a schematic diagram of the overall structure of a valve device provided in another embodiment of the present invention;

[0042] FIG11 is a schematic cross-sectional view of the valve device shown in FIG10 ;

[0043] FIG12 is a schematic structural diagram of a movable valve member provided in one embodiment of the present invention.

[0044] Description of reference numerals:

[0045] 10. Valve device; 20. Valve body; 210. External interface; 30. Valve core assembly; 310. Fixed valve member; 311. First fixed valve plate; 3111. First flow channel opening; 312. Second fixed valve plate; 3121. Second flow channel opening; 320. Moving valve member; 321. First moving valve plate; 322. Second moving valve plate; 323. Active connection structure; 3231. Positioning pin; 324. Connecting groove; 325. Guide portion; 3251. Second positioning portion; 326. Protrusion; 3261. Accommodating chamber; 3262. First positioning portion; 330. Elastic member; 40. Drive assembly; 410. Drive device; 420. Rotating shaft; 430. Reducer seat; S1. First axis. DETAILED DESCRIPTION

[0046] The present invention will be described in detail below with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional changes made by those skilled in the art based on these embodiments are all within the scope of protection of the present invention.

[0047] It should be understood that the terms used herein, such as "upper," "above," "lower," and "below," etc., indicating spatial relative positions, are used for ease of explanation to describe the relationship of one element or feature relative to another element or feature as shown in the accompanying drawings. Spatially relative terms may be intended to encompass different orientations of the device in use or operation other than the orientation shown in the drawings.

[0048] 1 and 2 , FIG1 is a schematic diagram of the overall structure of a valve device 10 provided in one embodiment of the present invention; FIG2 is a schematic diagram of the cross-sectional structure of the valve device 10 shown in FIG1 , and one embodiment of the present invention provides a valve device 10, comprising a valve body 20 and a valve core assembly 30 disposed within the valve body 20, wherein the valve body 20 has a plurality of external interfaces 210, and a fluid path flowing through the valve core assembly 30 is formed between the plurality of external interfaces 210, and the valve core assembly 30 comprises:

[0049] a fixed valve member 310, wherein the fixed valve member 310 is provided with a flow passage, and the flow passage is located on the fluid path;

[0050] a movable valve member 320 , wherein the movable valve member 320 can be driven to rotate about a first axis S1 , and the movable valve member 320 can also be driven to move along the first axis S1 to at least partially close the flow channel opening;

[0051] The elastic member 330 is connected to one side of the movable valve member 320 to apply an elastic force to the movable valve member 320 to abut against the fixed valve member 310 .

[0052] The valve body 20 is the main component of the valve assembly 10 and includes multiple external ports 210 . These ports 210 allow the valve body 20 to connect to external pipes or other fluid systems, thereby enabling the flow of fluid. Within the valve body 20 , the ports 210 form a fluid path through the valve core assembly 30 . This fluid path is the path formed by the flow of fluid entering the valve body 20 and includes the direction and pattern of fluid flow within the valve assembly 10 .

[0053] In this embodiment, the valve core assembly 30 is composed of three parts: a fixed valve member 310, a movable valve member 320, and an elastic member 330. The fixed valve member 310 is a component that is fixed relative to the valve body 20 and is provided with a flow channel. The flow channel is an opening for fluid to pass through the fixed valve member 310, and thus the flow channel is located on the fluid path. The movable valve member 320 is a component that can move relative to the valve body 20. It can rotate around an axis (the first axis S1) and can also move linearly along the first axis S1. This dual-action function enables the movable valve member 320 to interact with the flow channel in a variety of ways to increase or decrease the fluid flow rate, or even open or close the valve. The elastic member 330 is connected to one side of the movable valve member 320. Its function is to apply a force to the movable valve member 320 in the direction of the fixed valve member 310 so that the movable valve member 320 can maintain the movable valve member 320 in contact with the fixed valve member 310 when there is no other external force or the external force is smaller than the elastic force of the elastic member 330. The elastic member can be any one of a spring, a corrugated spring washer and a rubber washer, and any structure that can provide elastic force is acceptable. This embodiment does not limit the specific type of the elastic member.

[0054] As shown in Figures 1 and 2, the movable valve member 320 at least partially closes the flow passage opening on the fixed valve member 310. When fluid flows from top to bottom, that is, the fluid enters from the external interface 210 located above the movable valve plate and is ultimately discharged from the external interface 210 located below the fixed valve plate, the movable valve plate is impacted by the fluid and abuts against the fixed valve plate. The opening formed by the joint between the automatic valve member 320 and the flow passage opening of the fixed valve member 310 leaves the chamber where the movable valve member 320 is located. When the fluid passes through this opening (which is relatively small), the fluid undergoes a gas-liquid transition, thereby achieving a cooling effect. It is understood that if the elastic member 330 is not provided, the movable valve member 320 will be subjected to force and impact the fixed valve member 310 at the moment of impact by the fluid, which may cause the movable valve member 320 to rebound due to the impact. At this time, the abutment between the movable valve member 320 and the fixed valve member 310 will fail. Therefore, by connecting the elastic member 330 to the movable valve member 320, a continuous elastic force can be applied to the movable valve member 320 against the fixed valve member 310 to ensure that the movable valve member 320 can maintain good contact with the fixed valve member 310 even under fluid impact, preventing the movable valve member 320 from being displaced or detached due to changes in fluid pressure, thereby ensuring the accuracy of flow control. In addition, when the fluid flows from the bottom to the top, that is, the fluid enters from the external interface 210 located below the fixed valve plate and is finally discharged from the external interface 210 located above the movable valve plate, the fluid will overcome the elastic force of the elastic member 330 and push open the movable valve member 320. At this time, the flow channel of the fixed valve member 310 will be open, and the fluid can directly pass through the flow channel to the chamber where the movable valve member 320 is located, and finally be discharged from the flow channel above. In other words, the valve device 10 shown in Figures 1 and 2 can realize the functions of controlling the forward throttling and reverse straight-through of the fluid.

[0055] Further, referring to Figures 3 and 4, Figure 3 is a schematic diagram of the overall structure of the valve device 10 provided in another embodiment of the present invention; Figure 4 is a schematic diagram of the cross-sectional structure of the valve device 10 shown in Figure 3. In some embodiments, by setting a first flow channel opening 3111 and a second flow channel opening 3121 separated by a straight line direction, the movable valve member 320 at least partially closes the first flow channel opening 3111 and opens the second flow channel opening 3121, or at least partially closes the second flow channel opening 3121 and opens the first flow channel opening 3111, so as to achieve the function of throttling the control fluid in both forward and reverse directions.

[0056] Specifically, the fixed valve member 310 includes:

[0057] A first fixed valve plate 311 , wherein the first fixed valve plate 311 is provided with a first flow channel opening 3111 ;

[0058] A second fixed valve plate 312 , wherein the second fixed valve plate 312 is provided with a second flow channel opening 3121 , wherein the first flow channel opening 3111 and the second flow channel opening 3121 are both located on the fluid path;

[0059] The first fixed valve plate 311 and the second fixed valve plate 312 are arranged at a distance from each other along the direction of the first axis S1, and the movable valve member 320 is located between the first fixed valve plate 311 and the second fixed valve plate 312, and the movable valve member 320 can be driven to move between the first fixed valve plate 311 and the second fixed valve plate 312 along the direction of the first axis S1 to at least partially close the first flow channel opening 3111 and open the second flow channel opening 3121, or at least partially close the second flow channel opening 3121 and open the first flow channel opening 3111.

[0060] In this embodiment, the fixed valve member 310 is composed of a first fixed valve plate 311 and a second fixed valve plate 312. The first fixed valve plate 311 and the second fixed valve plate 312 are respectively provided with a first flow channel opening 3111 and a second flow channel opening 3121. The first flow channel opening 3111 and the second flow channel opening 3121 are both located on the fluid path, and the first flow channel opening 3111 and the second flow channel opening 3121 are arranged at a distance from each other along the direction of the first axis S1. This means that the two are arranged along the direction of the first axis S1 inside the valve body 20, but there is a certain distance between them, thereby providing space for the movable valve member 320 to move between the two. The movable valve member 320 is located between the first fixed valve plate 311 and the second fixed valve plate 312, and can move between the first fixed valve plate 311 and the second fixed valve plate 312 along the direction of the first axis S1, thereby at least partially closing the first flow channel opening 3111 and opening the second flow channel opening 3121, or at least partially closing the second flow channel opening 3121 and opening the first flow channel opening 3111, so as to achieve throttling of the fluid in both forward and reverse directions.

[0061] In this embodiment, the movable valve member 320 is a movable valve plate, and the elastic member 330 is arranged between the first fixed valve plate 311 and the movable valve plate, or between the second fixed valve plate 312 and the movable valve plate; the axis of the elastic member 330 coincides with or is parallel to the first axis S1.

[0062] Continuing with Figures 3 and 4, taking the example of the elastic member 330 disposed between the first fixed valve plate 311 and the movable valve member 320, when fluid flows from top to bottom, the fluid enters the chamber where the movable valve member 320 is located through the first flow channel opening 3111, and experiences a gas-liquid change at the opening formed by the automatic valve member 320 and the second flow channel opening 3121 of the second fixed valve plate 312, i.e., an expansion effect, before being discharged from the lower external port 210. When fluid flows from bottom to top, the fluid enters the chamber where the movable valve member 320 is located after the second flow channel pushes the movable valve member 320 open, and experiences a gas-liquid change at the opening formed by the automatic valve member 320 and the first flow channel opening 3111 of the first fixed valve plate 311, before being discharged from the upper external port 210. Thus, the valve device 10 provided in this embodiment can achieve forward and reverse throttling of the fluid, allowing the fluid to be effectively controlled in both directions without changing the configuration of the valve device 10. Furthermore, it can achieve a bidirectional throttling function in a smaller space, which helps to reduce the volume of the valve device 10.

[0063] Further, referring to Figure 5, Figure 5 is a schematic cross-sectional structure diagram of a valve device 10 provided in another embodiment of the present invention. The movable valve member 320 is composed of two movable valve plates connected to each other, and the elastic member 330 is arranged between the two movable valve plates to respectively press the two movable valve plates against the corresponding fixed valve plates.

[0064] Specifically, the movable valve member 320 includes a first movable valve plate 321 and a second movable valve plate 322 , wherein the first movable valve plate 321 and the second movable valve plate 322 are disposed between the first fixed valve plate 311 and the second fixed valve plate 312 ;

[0065] The first movable valve plate 321 and the second movable valve plate 322 can be driven to move along the first axis S1 between the first fixed valve plate 311 and the second fixed valve plate 312, and a movable connection structure 323 is provided between the first movable valve plate 321 and the second movable valve plate 322 to adjust the relative position of the first movable valve plate 321 and the second movable valve plate 322 in the direction of the first axis S1 when the first movable valve plate 321 and the second movable valve plate 322 are driven.

[0066] One of the first movable valve plate 321 and the second movable valve plate 322 can be driven to drive the other to rotate together around the first axis S1 to adjust the size of the opening formed when the first movable valve plate 321 or the second movable valve plate 322 at least partially closes the corresponding flow channel opening;

[0067] The elastic member 330 is disposed between the first movable valve plate 321 and the second movable valve plate 322 to press the first movable valve plate 321 against the first fixed valve plate 311 and / or press the second movable valve plate 322 against the second fixed valve plate 312 .

[0068] The movable valve member 320 is composed of two interconnected movable valve plates, namely a first movable valve plate 321 and a second movable valve plate 322. The first movable valve plate 123 can also be referred to as a first sub-valve plate, and the second movable valve plate 124 can also be referred to as a second sub-valve plate. The first movable valve plate 321 and the second movable valve plate 322 are disposed between the first fixed valve plate 311 and the second fixed valve plate 312, and jointly participate in fluid control. Compared to the aforementioned embodiment of a separate movable valve member 320, one difference is that the elastic member 330 is disposed between the two movable valve plates. Thus, when there is no fluid flow, the elastic member 330 presses the first movable valve plate 321 against the first fixed valve plate 311 and the second movable valve plate 322 against the second fixed valve plate 312. When there is fluid flow, the elastic member 330 can also stably maintain the contact between the two movable valve plates. Another difference is that a movable connection structure 323 is provided between the first movable valve plate 321 and the second movable valve plate 322, allowing the first and second movable valve plates 321, 322 to move relative to each other in the direction of the first axis S1. This allows the positions of the first and second movable valve plates 321, 322 to be automatically adjusted according to the direction of the fluid flow to control the flow of the fluid. The first and second movable valve plates 321, 322 can also be driven, so that one drives the other to rotate together around the first axis S1. This rotation adjusts the relative position of the movable valve plate and the flow channel opening, thereby changing the opening size of the flow channel opening and achieving precise control of the fluid flow rate.

[0069] 5 and 6 , FIG6 is a partial enlarged view of the movable valve member 320 in FIG5 . In this embodiment, one of the first movable valve plate 321 and the second movable valve plate 322 is provided with an inwardly recessed guide portion 325 on a side facing the other, and the other is provided with a protrusion 326 that cooperates with the first guide portion 325 . The guide portion 325 and the protrusion 326 intersect with the first axis S1 . The cross-sectional shapes of the guide portion 325 and the protrusion 326 are the same and both are non-circular, so as to define the relative position of the first movable valve plate 321 and the second movable valve plate 322 in the rotation direction.

[0070] The raised portion 326 is a hollow structure. A receiving chamber 3261 for accommodating the elastic member 330 is disposed in the raised portion 326 . One end of the elastic member 330 extending out of the receiving chamber 3261 abuts against the bottom wall of the guide portion 325 .

[0071] In this embodiment, the guide portion 325 and the protrusion 326 constitute the movable connection structure 323 between the first movable valve plate 321 and the second movable valve plate 322. The guide portion 325 and the protrusion 326 have the same non-circular cross-sectional shape, such as a rectangle, triangle, star, or D-shape. This ensures that the relative position between the first movable valve plate 321 and the second movable valve plate 322 is fixed during rotation, preventing relative sliding or misalignment. The specific cross-sectional shape is not limited herein. Furthermore, the guide portion 325 and the protrusion 326 can also move relative to each other along the first axis S1 to meet the requirement for the movable connection between the first movable valve plate 321 and the second movable valve plate 322.

[0072] The non-circular cross-sectional shapes of the guide portion 325 and the raised portion 326 ensure that the relative positions of the first movable valve plate 321 and the second movable valve plate 322 in the rotational direction are fixed, thereby improving the control accuracy of the valve device 10. The hollow structure of the raised portion 326 and the accommodating chamber 3261 allow the elastic member 330 to be compactly installed within the movable valve plate, reducing the external dimensions of the valve device 10 while improving the compactness and stability of the structure.

[0073] 6 and 7 , FIG7 is a schematic diagram of a deformed structure of the movable valve member 320 in FIG6 . In this embodiment, the accommodating chamber 3261 is provided with a first positioning portion 3262 extending toward the elastic member 330 to fix the elastic member 330 , and / or the guide portion 325 is provided with a second positioning portion 3251 extending toward the elastic member 330 to fix the elastic member 330 .

[0074] Within the hollow structure of the protrusion 326, that is, within the accommodating chamber 3261, a first positioning portion 3262 is provided, extending toward the elastic member 330. Also within the guide portion 325 is a second positioning portion 3251, extending toward the elastic member 330. The first and second positioning portions 3262, 3251 secure the elastic member 330 and ensure its correct position within the movable valve plate. The first and second positioning portions 3262, 3251 may be protrusions, grooves, or other mechanical structures that match the shape and size of the elastic member 330 to ensure a secure fixation. A portion of the elastic member 330 extends into the accommodating chamber 3261 and is secured by the first positioning portion 3262. Another part of the elastic member 330 may extend into the guide portion 325 and be fixed by the second positioning portion 3251. By arranging a positioning component in the accommodating chamber 3261 and the guide portion 325, the stability of the elastic member 330 inside the movable valve plate can be ensured, and the elastic member 330 can be prevented from being displaced or falling off during the operation of the valve device 10.

[0075] Referring to Figures 8 and 9, Figure 8 is a schematic cross-sectional view of a valve device 10 according to another embodiment of the present invention; and Figure 9 is a schematic cross-sectional view of a valve device 10 according to another embodiment of the present invention. In this embodiment, the movable connection structure 323 includes at least one positioning pin 3231. The at least one positioning pin 3231 is arranged along the circumference of the movable valve plate and is disposed between the first movable valve plate 321 and the second movable valve plate 322 to define the relative position of the first movable valve plate 321 and the second movable valve plate 322 in the rotational direction. The positioning pin 3231 is movably connected to the first movable valve plate 321 and / or the second movable valve plate 322.

[0076] Positioning pins 3231 are disposed between the first movable valve plate 321 and the second movable valve plate 322 and arranged along the circumference of the movable valve plates, ensuring that the first movable valve plate 321 and the second movable valve plate 322 maintain relative position during rotation, achieving synchronous rotation. Positioning pins 3231 are movably connected to the first movable valve plate 321 and / or the second movable valve plate 322, allowing the movable valve plates to move relative to each other within a certain range while maintaining proper alignment and positioning to meet the requirement for relative displacement of the first movable valve plate 321 and the second movable valve plate 322 along the first axis S1. The provision of positioning pins 3231 simplifies the connection structure between the movable valve plates. By limiting the relative position of the movable valve plates in the direction of rotation, positioning pins 3231 help ensure accurate and consistent fluid control.

[0077] Furthermore, in this embodiment, the number of the elastic members 330 is multiple, and they correspond one-to-one to the positioning pins 3231. The elastic member 330 is coaxially arranged with the positioning pin 3231, or the elastic member 330 is coaxially arranged with the first axis S1; at least one of the first movable valve plate 321 and the second movable valve plate 322 is provided with a connecting groove 324 that cooperates with the elastic member 330.

[0078] By means of multiple elastic members 330 corresponding one-to-one to the positioning pins 3231, precise control of the movable valve plate in rotation and linear motion can be ensured. The coaxial setting of the elastic members 330 helps to ensure uniform distribution of force and improve the operating accuracy of the valve device 10. The setting of the connecting groove 324 facilitates the fixation and installation of the elastic member 330.

[0079] 10 , 11 , and 12 , FIG. 10 is a schematic diagram of the overall structure of a valve device 10 provided in another embodiment of the present invention; FIG. 11 is a schematic diagram of the cross-sectional structure of the valve device 10 shown in FIG. 10 ; and FIG. 12 is a schematic diagram of the structure of a movable valve member 320 provided in an embodiment of the present invention. In this embodiment, one of the first movable valve plate 321 and the second movable valve plate 322 is provided with at least one protrusion 326 extending toward the other, and the other is provided with a guide portion 325 that cooperates with the protrusion 326 to define the relative position of the first movable valve plate 321 and the second movable valve plate 322 in the rotational direction.

[0080] There are multiple elastic members 330 , and the multiple elastic members 330 are arranged between the first sub-valve plate and the second sub-valve plate along the circumferential direction of the movable valve plate, or the elastic members 330 are coaxially arranged with the first axis S1 ;

[0081] At least one of the first movable valve plate 321 and the second movable valve plate 322 is provided with a connecting groove 324 that cooperates with the elastic member 330 .

[0082] The relative positions of the first movable valve plate 321 and the second movable valve plate 322 in the direction of rotation are defined by at least one protrusion 326 and a corresponding guide portion 325. The protrusion 326 is provided on one of the movable valve plates and extends toward the other movable valve plate. The guide portion 325 is provided on the other movable valve plate and is connected to the protrusion 326 to ensure that the two movable valve plates maintain the correct relative position during rotation. There are multiple elastic members 330, which are provided between the first movable valve plate 321 and the second movable valve plate 322 along the circumferential direction of the movable valve plate, or are provided coaxially with the first axis S1. This ensures that the elastic members 330 are evenly distributed between the movable valve plates, providing uniform force to maintain the correct position and stable abutment of the movable valve plates.

[0083] Continuing to refer to FIG. 12 , in this embodiment, the protrusion 326 and the corresponding guide portion 325 are both disposed near the outer edge of the movable valve plate.

[0084] It will be appreciated that when the protrusion 326 and guide 325 are positioned on the outer edge of the movable valve plate, they are located away from the center of rotation (first axis S1). During rotation, any minor machining errors in the protrusion 326 or guide 325 will produce a relatively small leverage effect away from the center. This means that even if there are some machining errors in the protrusion 326 or guide 325, their impact on the overall rotation of the movable valve plate will be amplified less due to the longer lever arm. Positioning the protrusion 326 and guide 325 on the outer edge of the movable valve plate ensures a more even distribution of machining errors during rotation. Because the protrusion 326 and guide 325 are located away from the center of rotation, minor deviations will not cause localized stress concentration or uneven wear on the movable valve plate during rotation. Furthermore, machining the outer edge of the movable valve plate is generally easier to achieve high precision than machining the center, because during machining, the tool or machining equipment typically provides more stable and precise control over the periphery than over the inner or central area.

[0085] In addition, an embodiment of the present invention further provides a vehicle thermal management system, in which the valve device 10 described above is provided.

[0086] It should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each implementation method can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0087] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A valve device comprising a valve body and a valve core assembly disposed in the valve body, wherein the valve body has a plurality of external interfaces, and a fluid path flowing through the valve core assembly is formed between the plurality of external interfaces, characterized in that: The valve core assembly includes: a fixed valve member, the fixed valve member being provided with a flow passage opening, the flow passage opening being located on the fluid path; a movable valve member, wherein the movable valve member can be driven to rotate about a first axis and can also be driven to move along the first axis to at least partially close the flow channel opening; An elastic member is connected to one side of the movable valve member to apply an elastic force to the movable valve member to abut against the fixed valve member.

2. The valve device according to claim 1, characterized in that The fixed valve member includes: a first fixed valve plate, wherein the first fixed valve plate is provided with a first flow channel opening; a second fixed valve plate, the second fixed valve plate being provided with a second flow channel opening, the first flow channel opening and the second flow channel opening being both located on the fluid path; The first fixed valve plate and the second fixed valve plate are arranged at a distance from each other along the first axis direction, the movable valve member is located between the first fixed valve plate and the second fixed valve plate, and the movable valve member can be driven to move between the first fixed valve plate and the second fixed valve plate along the first axis direction to at least partially close the first flow channel opening and open the second flow channel opening, or at least partially close the second flow channel opening and open the first flow channel opening.

3. The valve device according to claim 2, characterized in that The movable valve member is a movable valve plate, and the elastic member is arranged between the first fixed valve plate and the movable valve plate, or between the second fixed valve plate and the movable valve plate; the axis of the elastic member coincides with or is parallel to the first axis.

4. The valve device according to claim 2, characterized in that The movable valve member includes a first movable valve plate and a second movable valve plate, wherein the first movable valve plate and the second movable valve plate are arranged between the first fixed valve plate and the second fixed valve plate; The first movable valve plate and the second movable valve plate can be driven to move along the first axis between the first fixed valve plate and the second fixed valve plate, and a movable connection structure is provided between the first movable valve plate and the second movable valve plate to adjust the relative position of the first movable valve plate and the second movable valve plate in the first axis when the first movable valve plate is driven; One of the first movable valve plate and the second movable valve plate can be driven to drive the other to rotate together around a first axis to adjust the size of an opening formed when the first movable valve plate or the second movable valve plate at least partially closes the corresponding flow channel opening; The elastic member is disposed between the first movable valve plate and the second movable valve plate to press the first movable valve plate against the first fixed valve plate and / or to press the second movable valve plate against the second fixed valve plate.

5. The valve device according to claim 4, characterized in that The movable connection structure includes at least one positioning pin, which is arranged along the circumferential direction of the movable valve plate and is arranged between the first movable valve plate and the second movable valve plate to limit the relative position of the first movable valve plate and the second movable valve plate in the rotation direction. The positioning pin is movably connected to the first movable valve plate and / or the second movable valve plate.

6. The valve device according to claim 4, characterized in that There are multiple elastic members, and they correspond one to one with the positioning pins. The elastic members are coaxially arranged with the positioning pins, or the elastic members are coaxially arranged with the first axis. At least one of the first movable valve plate and the second movable valve plate is provided with a connecting groove that is cooperatively connected with the elastic member.

7. The valve device according to claim 4, characterized in that One of the first movable valve plate and the second movable valve plate is provided with an inwardly recessed guide portion on a side facing the other, and the other is provided with a protrusion that cooperates with the first guide portion, the guide portion and the protrusion intersecting the first axis, and the cross-sectional shapes of the guide portion and the protrusion being identical and non-circular, so as to define the relative position of the first movable valve plate and the second movable valve plate in the rotation direction; The raised portion is a hollow structure. A receiving chamber for receiving the elastic member is provided in the raised portion. One end of the elastic member extending out of the receiving chamber abuts against the bottom wall of the guide portion.

8. The valve device according to claim 7, characterized in that The accommodating chamber is provided with a first positioning portion extending toward the elastic member to fix the elastic member, and / or the guide portion is provided with a second positioning portion extending toward the elastic member to fix the elastic member.

9. The valve device according to claim 4, characterized in that One of the first movable valve plate and the second movable valve plate is provided with at least one protrusion extending toward the other, and the other is provided with a guide portion engaged with the protrusion to define the relative position of the first movable valve plate and the second movable valve plate in the rotation direction; There are multiple elastic members, and the multiple elastic members are arranged between the first sub-valve plate and the second sub-valve plate along the circumferential direction of the movable valve plate, or the elastic members are arranged coaxially with the first axis; At least one of the first movable valve plate and the second movable valve plate is provided with a connecting groove that is cooperatively connected with the elastic member.

10. The valve device according to any one of claims 1 to 9, characterized in that The elastic member is any one of a spring, a corrugated spring washer and a rubber washer.

11. A thermal management system, characterized in that: The device comprises a valve according to any one of claims 1 to 10.

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