Valve device and thermal management system

Abstract

The utility model provides a valve device and a heat management system, the valve device comprises a valve body and a valve core assembly arranged in the valve body, the valve body is provided with a plurality of external interfaces, a fluid path flowing through the valve core assembly is formed among the plurality of external interfaces, the valve core assembly comprises a fixed valve piece, a fixed valve piece and a movable valve piece, the fixed valve piece is provided with a flow path opening, and the flow path opening is located on the fluid path; the movable valve piece can be driven to rotate around the first axis, and the movable valve piece can also be driven to move in the direction of the first axis so as to at least partially seal the flow channel opening; the elastic piece is connected to one side of the movable valve piece so as to apply elastic force abutting against the fixed valve piece to the movable valve piece. According to the valve device, the elastic piece is connected to the movable valve piece, so that the continuous elastic force abutting against the fixed valve piece is applied to the movable valve piece, it is ensured that the movable valve piece can keep good contact with the fixed valve piece even under fluid impact, displacement or separation of the movable valve piece caused by fluid pressure changes is prevented, and the service life of the valve device is prolonged. And the accuracy of flow control is ensured.

Description

[0001] The present application is based on and claims priority to Chinese Patent Application No. 202410174480.7, filed on February 7, 2024, the entire contents of which are hereby incorporated by reference into the present application. TECHNICAL FIELD

[0002] The present application relates to the technical field of valve, and in particular to a valve device and a thermal management system. BACKGROUND

[0003] With the rapid development of new energy vehicles, the related technology of the thermal management system of the vehicle is gradually improving, which also means that higher requirements are put forward for various valve bodies therein, and the electronic expansion valve is an indispensable member in the thermal management system.

[0004] The flat plate type expansion valve is a new type of expansion valve, which includes two valve plates abutting against each other, one of which is provided with a flow passage opening. By controlling the relative positions of the two valve plates, the opening degree of the flow passage opening is controlled, thereby realizing the control of the flow of the expansion valve. However, since the valve plate is located in the fluid path of the valve device, the valve plate needs to withstand the impact of the fluid, so that the abutment between the two valve plates is easily lost, thereby failing to accurately control the opening degree of the flow passage opening.

[0005] Based on this, the present application provides a valve device and a thermal management system to improve the prior art. SUMMARY

[0006] The purpose of the present application is to provide a valve device and a thermal management system to solve the problem that the abutment between the valve plates is lost due to the impact of the fluid.

[0007] In a first aspect, an embodiment of the present application provides a valve device, comprising a valve body and a valve core assembly arranged in the valve body, the valve body having a plurality of external interfaces, a fluid path formed between the plurality of external interfaces and passing through the valve core assembly, the valve core assembly comprising:

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

[0009] a movable valve piece, the movable valve piece being drivable to rotate around a first axis, and the movable valve piece being further drivable to move along the direction of the first axis to at least partially close the flow passage opening;

[0010] a resilient piece, the resilient piece being connected to one side of the movable valve piece to apply an elastic force of the movable valve piece to abut against the fixed valve piece.

[0011] In some optional embodiments, the fixed valve piece comprises:

[0012] a first fixed valve plate, the first fixed valve plate being provided with a first flow passage opening;

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

[0014] the first fixed valve plate and the second fixed valve plate being located apart along the first axis direction, the movable valve member being located between the first fixed valve plate and the second fixed valve plate, and the movable valve member being drivable 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 passage opening and open the second flow passage opening, or at least partially close the second flow passage opening and open the first flow passage 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 comprises a first movable valve plate and a second movable valve plate, the first movable valve plate and the second movable valve plate being arranged between the first fixed valve plate and the second fixed valve plate;

[0017] the first movable valve plate and the second movable valve plate being drivable to move between the first fixed valve plate and the second fixed valve plate along the first axis direction, and an active connection structure being arranged 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 direction when driven;

[0018] one of the first movable valve plate and the second movable valve plate being drivable to drive the other to rotate around the first axis to adjust the size of the opening formed when the first movable valve plate or the second movable valve plate at least partially closes the corresponding flow passage opening;

[0019] the elastic member being arranged between the first movable valve plate and the second movable valve plate to abut the first movable valve plate against the first fixed valve plate and / or abut the second movable valve plate against the second fixed valve plate.

[0020] In some optional embodiments, the active connection structure comprises at least one positioning pin arranged along the circumferential direction of the movable valve plate and arranged between the first movable valve plate and the second movable valve plate to define the relative position of the first movable valve plate and the second movable valve plate in the rotation direction, the positioning pin being in active connection with the first movable valve plate and / or the second movable valve plate.

[0021] In some optional embodiments, the number of elastic members is multiple, and each elastic member corresponds to one positioning pin, and the elastic member is coaxial with the positioning pin, or the elastic member is coaxial with the first axis.

[0022] At least one of the first dynamic valve plate and the second dynamic valve plate is provided with a connecting groove matched with the elastic member.

[0023] In some optional embodiments, one of the first dynamic valve plate and the second dynamic valve plate is provided with an inwardly recessed guide portion on one side thereof, and the other is provided with a protruding portion matched with the guide portion, the guide portion and the protruding portion intersect the first axis, the guide portion and the protruding portion have the same cross-sectional shape, and are both non-circular to define the relative position of the first dynamic valve plate and the second dynamic valve plate in the rotation direction.

[0024] The protruding portion is a hollow structure, and the protruding portion is provided with a containing cavity containing the elastic member, and one end of the elastic member extending out of the containing cavity abuts against the bottom wall of the guide portion.

[0025] In some optional embodiments, the containing cavity is provided with a first positioning portion extending to the elastic member to fix the elastic member, and / or the guide portion is provided with a second positioning portion extending to the elastic member to fix the elastic member.

[0026] In some optional embodiments, one of the first dynamic valve plate and the second dynamic valve plate is provided with at least one protruding portion extending to the other, and the other is provided with a guide portion matched with the protruding portion to define the relative position of the first dynamic valve plate and the second dynamic valve plate in the rotation direction.

[0027] The number of elastic members is multiple, and the multiple elastic members are arranged between the first dynamic valve plate and the second dynamic valve plate in the circumferential direction of the dynamic valve plate, or the elastic member is coaxial with the first axis.

[0028] At least one of the first dynamic valve plate and the second dynamic valve plate is provided with a connecting groove matched with the elastic member.

[0029] In some optional embodiments, the elastic member is any one of a spring, a wave-shaped elastic pad, and a rubber pad.

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

[0031] Compared with commonly used technologies, this invention has the following advantages: By connecting an elastic element to the moving valve, a continuous elastic force can be applied to the moving valve, abutting against the stationary valve. This ensures that even under fluid impact, the moving valve maintains good contact with the stationary valve, preventing displacement or disengagement of the moving valve due to fluid pressure changes, thereby guaranteeing the accuracy of flow control. Simultaneously, by enabling the moving valve to rotate around a first axis and also move along that axis, the moving valve can not only adjust the opening of the corresponding flow channel by rotation but also more precisely control the degree of closure of the flow channel by axial movement. This dual-action configuration improves the flexibility and accuracy of fluid flow control and solves the problem of bidirectional fluid flow, making it particularly suitable for thermal management systems in new energy vehicles. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of a valve device provided in an embodiment of the present invention;

[0033] Figure 2 yes Figure 1 A schematic cross-sectional view of the valve device shown.

[0034] Figure 3 This is a schematic diagram of the overall structure of a valve device provided in another embodiment of the present invention;

[0035] Figure 4 yes Figure 3 A schematic cross-sectional view of the valve device shown.

[0036] Figure 5 This is a cross-sectional structural schematic diagram of a valve device provided in another embodiment of the present invention;

[0037] Figure 6 yes Figure 5 A partial enlarged view of the intermediate-operation valve component;

[0038] Figure 7 yes Figure 6 A schematic diagram of a modified structure of a centrally operated valve;

[0039] Figure 8 This is a cross-sectional structural schematic diagram of a valve device provided in another embodiment of the present invention;

[0040] Figure 9 This is a cross-sectional structural schematic diagram of a valve device provided in another embodiment of the present invention;

[0041] Figure 10 This is a schematic diagram of the overall structure of the valve device provided in another embodiment of the present invention;

[0042] Figure 11 yes Figure 10 A schematic cross-sectional view of the valve device shown.

[0043] Figure 12 is a structural schematic diagram of a moving valve provided by an embodiment of the present application.

[0044] Legend:

[0045] 10, valve device; 20, valve body; 210, external interface; 30, valve core assembly; 310, fixed valve; 311, first fixed valve plate; 3111, first flow passage opening; 312, second fixed valve plate; 3121, second flow passage opening; 320, moving valve; 321, first moving valve plate; 322, second moving valve plate; 323, movable connection structure; 3231, positioning pin; 324, connecting groove; 325, guide portion; 3251, second positioning portion; 326, protruding portion; 3261, accommodating chamber; 3262, first positioning portion; 330, elastic member; 40, driving assembly; 410, driving device; 420, rotating shaft; 430, reduction gearbox seat; S1, first axis. DETAILED DESCRIPTION

[0046] The present application will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments do not limit the present application, and any changes in structure, method, or function made by those of ordinary skill in the art based on these embodiments are included in the protection scope of the present application.

[0047] It should be understood that the terms such as "upper", "above", "lower", "below", and the like used herein to indicate spatial relative positions are for the purpose of facilitating description to describe the relationship of one unit or feature relative to another unit or feature as shown in the drawings. The spatial relative position terms can be intended to include different orientations of the device in use or in operation other than the orientation shown in the drawings.

[0048] Referring to Figure 1 and Figure 2 , Figure 1 is a structural schematic diagram of a valve device 10 provided by an embodiment of the present application; Figure 2 is Figure 1 is a sectional structural schematic diagram of the valve device 10 shown in the drawings, and an embodiment of the present application provides a valve device 10, which includes a valve body 20 and a valve core assembly 30 arranged in the valve body 20, the valve body 20 has a plurality of external interfaces 210, the plurality of external interfaces 210 form a fluid path passing through the valve core assembly 30 therebetween, and the valve core assembly 30 includes:

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

[0050] A moving valve 320, which can be driven to rotate around a first axis S1 and can also be driven to move along the first axis S1, to at least partially close the flow passage;

[0051] An elastic member 330, which is connected to one side of the moving valve 320 to apply an elastic force to the moving valve 320 to abut against the fixed valve 310.

[0052] The valve body 20 is the main part of the valve device 10, which contains a plurality of external interfaces 210, allowing the valve body 20 to be connected with external pipes or other fluid systems, so as to realize the inflow and outflow of fluid. In the valve body 20, a fluid path formed by the plurality of external interfaces 210 is formed, which is the path formed by the fluid flowing into the valve body 20, including the direction and manner of the fluid flowing inside the valve device 10.

[0053] In this embodiment, the valve core assembly 30 is composed of a fixed valve 310, a moving valve 320 and an elastic member 330. The fixed valve 310 refers to a component fixed relative to the valve body 20, which is provided with a flow passage, which is an opening for fluid to pass through the fixed valve 310, so the flow passage is located on the fluid path. The moving valve 320 refers to a component that can move relative to the valve body 20, which can rotate around an axis (the first axis S1) and can also move linearly along the first axis S1. The dual-action function of the moving valve 320 enables it to interact with the flow passage in multiple ways, achieving the increase or decrease of fluid flow, or even opening or closing. The elastic member 330 is connected to one side of the moving valve 320, which applies a force to the moving valve 320 in the direction of the fixed valve 310, so that the moving valve 320 can maintain abutment with the fixed valve 310 when there is no other external force or the other external force is smaller than the elastic force of the elastic member 330. The elastic member can be any of a spring, a wave-shaped elastic pad and a rubber pad, and any structure that can provide an elastic force is acceptable, and the specific type of the elastic member is not limited in this embodiment.

[0054] As Figure 1 and Figure 2As shown, 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, i.e. fluid enters from the external interface 210 above the movable valve plate and is finally discharged from the external interface 210 below the fixed valve plate, the movable valve plate is impacted by fluid and abuts against the fixed valve plate, the opening formed by the joint position of the movable valve member 320 and the flow passage opening of the fixed valve member 310, and the chamber where the movable valve member 320 is located, when fluid passes through this opening position (small opening), the gas-liquid change of fluid occurs, thereby achieving the cooling effect. It can be understood that, if the elastic member 330 is not provided, when the movable valve member 320 is impacted by fluid, the movable valve member 320 will be forced to impact the fixed valve member 310, and the rebound of the movable valve member 320 due to the impact may occur, at this time, the problem of abutment failure between the movable valve member 320 and the fixed valve member 310 occurs. Therefore, by connecting the elastic member 330 to the movable valve member 320, a continuous elastic force of the movable valve member 320 against the fixed valve member 310 can be applied to the movable valve member 320, so as to ensure that the movable valve member 320 can maintain good contact with the fixed valve member 310 even under the impact of fluid, and prevent displacement or disengagement of the movable valve member 320 due to the change of fluid pressure, thereby ensuring the accuracy of flow control. In addition, when fluid flows from bottom to top, i.e. fluid enters from the external interface 210 below the fixed valve plate and is finally discharged from the external interface 210 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 passage opening of the fixed valve member 310 will be open, and the fluid can directly pass through the flow passage opening and enter the chamber where the movable valve member 320 is located, and is finally discharged from the flow passage opening above. That is, Figure 1 and Figure 2 The valve device 10 shown can realize the function of controlling the forward throttling and reverse straight-through of fluid.

[0055] Further, referring to Figure 3 and Figure 4 , Figure 3 is a schematic diagram of the overall structure of the valve device 10 provided by another embodiment of the present application; Figure 4 is Figure 3 The cross-sectional structure of the valve device 10 shown, in some embodiments, by setting the first flow passage opening 3111 and the second flow passage opening 3121 apart along the straight line direction, the movable valve member 320 at least partially closes the first flow passage opening 3111 and opens the second flow passage opening 3121, or at least partially closes the second flow passage opening 3121 and opens the first flow passage opening 3111, to realize the function of controlling the forward and reverse throttling of fluid.

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

[0057] The first fixed valve plate 311 is provided with a first flow passage opening 3111;

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

[0059] The first valve plate 311 and the second valve plate 312 are arranged apart along the first axis S1, and the movable valve member 320 is located between the first valve plate 311 and the second valve plate 312 and can be driven to move between the first valve plate 311 and the second valve plate 312 along the first axis S1 to at least partially close the first flow passage port 3111 and open the second flow passage port 3121, or at least partially close the second flow passage port 3121 and open the first flow passage port 3111.

[0060] In the embodiment, the valve member 310 is composed of a first valve plate 311 and a second valve plate 312, and the first valve plate 311 and the second valve plate 312 are respectively provided with a first flow passage port 3111 and a second flow passage port 3121, both of which are located on the fluid path and arranged apart along the first axis S1, which means that they are arranged along the first axis S1 inside the valve body 20 but have a certain distance therebetween, thereby providing a space for the movement of the movable valve member 320 therebetween. The movable valve member 320 is located between the first valve plate 311 and the second valve plate 312 and can move between the first valve plate 311 and the second valve plate 312 along the first axis S1, thereby achieving at least partially closing the first flow passage port 3111 and opening the second flow passage port 3121, or at least partially closing the second flow passage port 3121 and opening the first flow passage port 3111, and realizing the throttling of fluid in both forward and reverse directions.

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

[0062] Continuing to refer to Figure 3 and Figure 4For example, when the fluid flows from top to bottom, the fluid enters the chamber where the movable valve member 320 is located through the first flow channel port 3111, and then is discharged from the lower external interface 210 after the gas-liquid change occurs at the opening formed by the movable valve member 320 and the second flow channel port 3121 of the second fixed valve plate 312. When the fluid flows from bottom to top, the fluid enters the chamber where the movable valve member 320 is located after the movable valve member 320 is opened by the second flow channel, and then is discharged from the upper external interface 210 after the gas-liquid change occurs at the opening formed by the movable valve member 320 and the first flow channel port 3111 of the first fixed valve plate 311. Thus, the valve device 10 provided by the embodiment can realize forward and reverse throttling of the fluid, which allows the fluid to be effectively controlled in both directions without changing the configuration of the valve device 10, and realizes the 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 cross-sectional structural schematic view of a valve device 10 provided by another embodiment of the present application. 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 abut 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, and the first movable valve plate 321 and the second movable valve plate 322 are arranged 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 an active connection structure 323 is arranged 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 first axis S1 direction 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 around the first axis S1 together, so as 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 port.

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

[0068] The moving valve piece 320 is composed of two moving valve plates connected to each other, i.e. a first moving valve plate 321 and a second moving valve plate 322. The first moving valve plate 321 can also be referred to as a first sub valve plate, and the second moving valve plate 322 can also be referred to as a second sub valve plate. The first moving valve plate 321 and the second moving valve plate 322 are arranged between the first fixed valve plate 311 and the second fixed valve plate 312 and jointly participate in the control of the fluid. Compared with the above-mentioned embodiment of the single moving valve piece 320, one difference is that the elastic piece 330 is arranged between the two moving valve plates, so that when there is no fluid flow, the elastic piece 330 abuts the first moving valve plate 321 against the first fixed valve plate 311 and abuts the second moving valve plate 322 against the second fixed valve plate 312, and when there is fluid flow, the abutment of one of them can also be stably maintained. At the same time, there is also a difference that the first moving valve plate 321 and the second moving valve plate 322 are provided with a movable connection structure 323 to allow the first moving valve plate 321 and the second moving valve plate 322 to move relatively in the direction of the first axis S1, so as to automatically adjust the positions of the first moving valve plate 321 and the second moving valve plate 322 according to the flow direction of the fluid to control the flow of the fluid. The first moving valve plate 321 and the second moving valve plate 322 can also be driven so that one of them drives the other to rotate together around the first axis S1. Such rotation can adjust the relative positions of the moving valve plates and the flow passage port, so as to change the opening size of the flow passage port and realize precise control of the fluid flow.

[0069] Referring to Figure 5 and Figure 6 , Figure 6 is Figure 5 a partial enlarged view of the moving valve piece 320 in the embodiment, one of the first moving valve plate 321 and the second moving valve plate 322 is provided with an inwardly recessed guide portion 325 on the side facing the other, and the other is provided with a protruding portion 326 matched and connected with the guide portion 325. The guide portion 325 and the protruding portion 326 intersect with the first axis S1, the cross-sectional shapes of the guide portion 325 and the protruding portion 326 are the same, and both are non-circular to limit the relative positions of the first moving valve plate 321 and the second moving valve plate 322 in the rotation direction;

[0070] The protruding portion 326 is a hollow structure, and the protruding portion 326 is provided with a containing cavity 3261 containing the elastic piece 330, and one end of the elastic piece 330 extending out of the containing cavity 3261 abuts against the bottom wall of the guide portion 325.

[0071] In the embodiment, the guide portion 325 and the protruding portion 326 are the movable connection structure 323 between the first movable valve plate 321 and the second movable valve plate 322, the cross-sectional shape of the guide portion 325 and the protruding portion 326 is the same, and is non-circular, for example, rectangular, triangular, star-shaped, D-shaped, etc., to ensure that the relative position between the first movable valve plate 321 and the second movable valve plate 322 is fixed during rotation, preventing them from slipping or misaligning during rotation. The specific cross-sectional shape is not limited here. At the same time, the guide portion 325 and the protruding portion 326 can also be relatively displaced in the direction of the first axis S1 to meet the needs of the movable connection of the first movable valve plate 321 and the second movable valve plate 322.

[0072] Through the non-circular cross-sectional shape of the guide portion 325 and the protruding portion 326, the relative position of the first movable valve plate 321 and the second movable valve plate 322 in the rotation direction can be ensured to be fixed, thereby improving the control accuracy of the valve device 10. The hollow structure and the accommodation chamber 3261 of the protruding portion 326 allow the elastic member 330 to be compactly installed inside the movable valve plate, reducing the external size of the valve device 10, while improving the compactness and stability of the structure.

[0073] Referring to Figure 6 and Figure 7 , Figure 7 is Figure 6 a schematic view of a variant structure of the movable valve element 320, in the embodiment, the accommodation chamber 3261 is provided with a first positioning portion 3262 extending to 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 to the elastic member 330.

[0074] Inside the hollow structure of the protruding portion 326, i.e. in the accommodation chamber 3261, a first positioning portion 3262 extending to the elastic member 330 is provided. In the guide portion 325, a second positioning portion 3251 extending to the elastic member 330 is also provided. The functions of the first positioning portion 3262 and the second positioning portion 3251 are to fix the elastic member 330 and ensure its correct position inside the movable valve plate. The first positioning portion 3262 and the second positioning portion 3251 can be protrusions, grooves or other forms of mechanical structures, which are matched in shape and size with the elastic member 330 to achieve stable fixation. Part of the elastic member 330 extends into the accommodation chamber 3261 and is fixed by the first positioning portion 3262. Another part of the elastic member 330 can extend into the guide portion 325 and be fixed by the second positioning portion 3251. By providing positioning components in the accommodation chamber 3261 and the guide portion 325, the stability of the elastic member 330 inside the movable valve plate can be ensured, preventing displacement or falling of the elastic member 330 during operation of the valve device 10.

[0075] Referring to Figure 8 and Figure 9 , Figure 8 is a cross-sectional structural schematic diagram of a valve device 10 provided by another embodiment of the present application; Figure 9 is a cross-sectional structural schematic diagram of a valve device 10 provided by another embodiment of the present application. In the present embodiment, the movable connection structure 323 includes at least one positioning pin 3231 arranged along the circumferential direction of the movable valve plate and 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 rotation direction, and the positioning pin 3231 is movably connected with the first movable valve plate 321 and / or the second movable valve plate 322.

[0076] The positioning pin 3231 is disposed between the first movable valve plate 321 and the second movable valve plate 322 and arranged along the circumferential direction of the movable valve plate to ensure that the first movable valve plate 321 and the second movable valve plate 322 maintain the relative position when rotating to realize synchronous rotation. The positioning pin 3231 is movably connected with the first movable valve plate 321 and / or the second movable valve plate 322, i.e., allowing the movable valve plates to move relatively within a certain range while still maintaining correct alignment and positioning to meet the requirement of relative displacement of the first movable valve plate 321 and the second movable valve plate 322 along the first axis S1 direction. The positioning pin 3231 simplifies the connection structure between the movable valve plates, and by limiting the relative position of the movable valve plates in the rotation direction, the positioning pin 3231 helps to ensure the accuracy and consistency of fluid control.

[0077] Further, in the present embodiment, the number of elastic members 330 is multiple, and each corresponds to a positioning pin 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 connection groove 324 for cooperating with the elastic member 330.

[0078] The multiple elastic members 330 corresponding to the positioning pin 3231 can ensure accurate control of the movable valve plate in rotation and linear motion, and the coaxial arrangement of the elastic member 330 helps to ensure uniform distribution of force, improving the operation accuracy of the valve device 10, and the provision of the connection groove 324 facilitates the fixation and installation of the elastic member 330.

[0079] Referring to Figure 10 , Figure 11 and Figure 12 , Figure 10 is a whole structural schematic diagram of a valve device 10 provided by another embodiment of the present application; Figure 11 is Figure 10A cross-sectional structural schematic diagram of the valve device 10 shown; Figure 12 is a structural schematic diagram of a moving valve piece 320 provided by an embodiment of the present application. In this embodiment, one of the first moving valve plate 321 and the second moving valve plate 322 is provided with at least one protruding part 326 extending to the other, and the other is provided with a guide part 325 cooperating with the protruding part 326 to limit the relative position of the first moving valve plate 321 and the second moving valve plate 322 in the rotation direction;

[0080] The number of the elastic pieces 330 is multiple, and the multiple elastic pieces 330 are arranged between the first moving valve plate and the second moving valve plate in the circumferential direction of the moving valve plate, or the elastic pieces 330 are arranged coaxially with the first axis S1.

[0081] At least one of the first moving valve plate 321 and the second moving valve plate 322 is provided with a connecting groove 324 cooperating with the elastic piece 330.

[0082] The relative position of the first moving valve plate 321 and the second moving valve plate 322 in the rotation direction is limited by at least one protruding part 326 and the corresponding guide part 325. The protruding part 326 is arranged on one of the moving valve plates and extends to the other. The guide part 325 is arranged on the other moving valve plate and cooperates with the protruding part 326 to ensure that the two moving valve plates maintain the correct relative position when rotating. The number of the elastic pieces 330 is multiple, and the multiple elastic pieces 330 are arranged between the first moving valve plate 321 and the second moving valve plate 322 in the circumferential direction of the moving valve plate, or arranged coaxially with the first axis S1. It can be ensured that the elastic pieces 330 are uniformly distributed between the moving valve plates, and provide uniform force to maintain the correct position and stable abutment of the moving valve plates.

[0083] Continuing to refer to Figure 12 In this embodiment, the protruding part 326 and the corresponding guide part 325 are arranged at the position close to the outer edge of the moving valve plate.

[0084] It can be understood that when the protrusions 326 and the guides 325 are arranged at the outer edge of the moving valve plate, they are away from the rotation center (the first axis S1). During rotation, the lever effect of a slight machining error of any protrusion 326 or guide 325 generated at a position away from the center is relatively small. This means that even if there are some machining errors of the protrusions 326 and the guides 325, the influence of the machining errors on the overall rotation of the moving valve plate will be amplified less because of the long force arm. Arranging the protrusions 326 and the guides 325 at the outer edge of the moving valve plate can make the distribution of machining errors during rotation more uniform. Since the protrusions 326 and the guides 325 are away from the rotation center, slight deviations of the protrusions 326 and the guides 325 will not cause local stress concentration or uneven wear of the moving valve plate during rotation. At the same time, machining at the outer edge of the moving valve plate is usually easier to achieve high precision than at the central region, because the control of the tool or machining equipment on the periphery is usually more stable and accurate than the control on the inner or central region during machining.

[0085] Furthermore, the utility model embodiment further provides a vehicle thermal management system, which is provided with the valve device 10 described above.

[0086] It should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that those skilled in the art can understand.

[0087] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present application, and are not used to limit the protection scope of the present application, and equivalent embodiments or changes made without departing from the spirit of the present application should be included in the protection scope of the present application.

Claims

1. A valve apparatus comprising a valve body and a valve core assembly disposed within the valve body, the valve body having a plurality of external ports between which a fluid path is formed through the valve core assembly, characterised in that, The valve core assembly comprises: a fixed valve element provided with a flow passage opening on the fluid path; a movable valve element which can be driven to rotate around a first axis and can be driven to move along the first axis direction to at least partially close the flow passage opening; a resilient element connected to one side of the movable valve element to apply a resilient force to the movable valve element against the fixed valve element.

2. The valve device according to claim 1, characterized in that The fixed valve element comprises: a first fixed valve plate provided with a first flow passage opening; a second fixed valve plate provided with a second flow passage opening, the first flow passage opening and the second flow passage opening being on the fluid path; the first fixed valve plate and the second fixed valve plate are arranged apart along the first axis direction, the movable valve element is between the first fixed valve plate and the second fixed valve plate, and the movable valve element 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 passage opening and open the second flow passage opening, or at least partially close the second flow passage opening and open the first flow passage opening.

3. The valve device of claim 2, wherein The movable valve element is a movable valve plate, and the resilient element 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 resilient element coincides with or is parallel to the first axis.

4. The valve device of claim 2, wherein The movable valve element comprises a first movable valve plate and a second movable valve plate 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 between the first fixed valve plate and the second fixed valve plate along the first axis direction, and an active connection structure is arranged 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 direction when driven; one of the first movable valve plate and the second movable valve plate can be driven to rotate around the first axis together with the other to adjust the size of the opening formed when the first movable valve plate or the second movable valve plate at least partially closes the corresponding flow passage opening; the resilient element is arranged between the first movable valve plate and the second movable valve plate to abut the first fixed valve plate and / or the second fixed valve plate.

5. The valve device of claim 4, wherein The active connection structure comprises at least one positioning pin arranged along the circumferential direction of the movable valve plate and arranged between the first movable valve plate and the second movable valve plate to define the relative position of the first movable valve plate and the second movable valve plate in the rotation direction, and the positioning pin is actively connected with the first movable valve plate and / or the second movable valve plate.

6. The valve device of claim 5, wherein The number of resilient elements is plural and corresponds to the positioning pins one by one, and the resilient elements are coaxially arranged with the positioning pins or 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 connection groove matched with the resilient element.

7. The valve device of claim 4, wherein One of the first and second valve plates is provided with a guiding portion recessed inwardly on one side thereof, and the other is provided with a protruding portion matched with the guiding portion, the guiding portion and the protruding portion intersect the first axis, the cross-sectional shape of the guiding portion and the protruding portion is the same and is non-circular, so as to limit the relative position of the first valve plate and the second valve plate in the rotating direction. The protruding portion is a hollow structure, and the protruding portion is provided with a receiving cavity for accommodating the elastic member, and one end of the elastic member extending out of the receiving cavity abuts against the bottom wall of the guiding portion.

8. The valve device of claim 7, wherein The receiving cavity is provided with a first positioning portion extending to the elastic member for fixing the elastic member, and / or the guiding portion is provided with a second positioning portion extending to the elastic member for fixing the elastic member.

9. The valve device of claim 4, wherein One of the first and second valve plates is provided with at least one protruding portion extending to the other, and the other is provided with a guiding portion matched with the protruding portion, so as to limit the relative position of the first valve plate and the second valve plate in the rotating direction. The number of the elastic members is multiple, and the multiple elastic members are arranged between the first valve plate and the second valve plate along the circumferential direction of the valve plate, or the elastic members are coaxially arranged with the first axis. At least one of the first and second valve plates is provided with a connecting groove matched with the elastic member.

10. Valve device according to any of claims 1 to 9, characterized in that The elastic member is any one of a spring, a wave-shaped elastic pad and a rubber pad.

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

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