Flow regulating valve, thermal management system and vehicle

Abstract

The invention relates to a flow regulating valve, a heat management system and a vehicle, and the flow regulating valve comprises a valve body which is provided with a valve cavity, and a first opening and a second opening which are respectively communicated with the valve cavity; the valve element comprises a valve port assembly and a valve needle assembly, the valve port assembly is movably arranged in the valve cavity and used for blocking or opening the first opening, the valve port assembly is provided with a first containing cavity, a third opening and a fourth opening, the third opening and the fourth opening are communicated with the first containing cavity, the third opening is communicated with the first opening, and the fourth opening is communicated with the second opening. The valve needle assembly is at least partially and movably arranged in the first containing cavity and used for blocking or opening the third opening. And the driving assembly is in driving connection with the valve element and used for driving the valve needle assembly to move, or the driving assembly is used for driving the valve needle assembly to move so as to drive the valve port assembly to move. According to the technical scheme, the use cost of the flow regulating valve is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of flow control valves, and in particular to a flow control valve, a thermal management system and a vehicle. Background Art

[0002] At present, in the existing new energy automobile heat pump air conditioning system, small-diameter expansion valves are generally used. Such small-diameter expansion valves only support small flow conditions and cannot achieve full-flow. For the situation where full-flow and large flow are required under specific conditions, a small-diameter expansion valve and a stop valve are usually connected in parallel, and a large-diameter expansion valve and a stop valve are connected in series. However, the above method requires the cooperation of two parts to achieve, which increases the number of parts and thus increases the cost of use when adjusting the flow. Summary of the invention

[0003] The embodiment of the present application provides a flow control valve, which reduces the use cost of the flow control valve, so as to at least partially solve the above-mentioned technical problems.

[0004] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, there is provided a flow regulating valve, comprising: a valve body, having a valve cavity and a first opening and a second opening respectively connected to the valve cavity; a valve core, comprising a valve port assembly and a valve needle assembly, the valve port assembly is movably arranged in the valve cavity, and is used to block or open the first opening, the valve port assembly has a first accommodating cavity and a third opening and a fourth opening respectively connected to the first accommodating cavity, the third opening is connected to the first opening, and the fourth opening is connected to the second opening, the valve needle assembly is at least partially movably arranged in the first accommodating cavity, and is used to block or open the third opening; a drive assembly, which is drivingly connected to the valve core, the drive assembly is used to drive the valve needle assembly to move, or the drive assembly is used to drive the valve needle assembly to move and drive the valve port assembly to move.

[0005] Optionally, the valve needle assembly includes a valve needle and a driving rod, one end of the driving rod is connected to one end of the valve needle, the driving assembly is drivingly connected to the driving rod, and the driving assembly is used to drive the driving rod to drive the valve needle to move so that the other end of the valve needle blocks or opens the third opening.

[0006] Optionally, the valve needle assembly also includes a first elastic member, the valve needle has a receiving groove, one end of the driving rod and the first elastic member are both arranged in the receiving groove, the two ends of the first elastic member are respectively abutted against one end of the driving rod and the inner wall of the receiving groove, and the first elastic member is used to apply a force from the driving rod toward the valve needle.

[0007] Optionally, the driving rod includes a screw rod, and the driving assembly is threadedly connected to the screw rod to drive the driving rod to move.

[0008] Optionally, the valve port assembly includes: a valve port ring, having a first chamber and a second chamber which are arranged axially along the valve body and are connected, the first chamber and the second chamber together form a first accommodating chamber, the second chamber is arranged close to the first opening, the valve needle seat has a third chamber and a third opening and a fourth opening which are connected to the third chamber, and the valve needle is at least partially connected to the first chamber, the second chamber and the third chamber.

[0009] Optionally, the valve port assembly further includes a sealing seat, which is disposed in the third chamber, and an outer diameter of the sealing seat is greater than an inner diameter of the third chamber.

[0010] Optionally, the sealing seat has a fourth chamber, the fourth chamber has a sealing member, and the sealing member is sleeved on the valve needle.

[0011] Optionally, a pressing piece is further provided in the fourth chamber. The pressing piece and the sealing piece are arranged along the axial direction of the valve body. The pressing piece is arranged closer to the first chamber relative to the sealing piece, and the pressing piece is sleeved on the valve needle.

[0012] Optionally, the valve needle has a clamping portion, and the clamping portion is used to drive the valve port assembly to move to block or open the first opening.

[0013] Optionally, the outer side wall of the valve needle is provided with a protruding structure, and the protruding structure can cooperate with the inner wall of the valve port ring to drive the valve port assembly to move.

[0014] Optionally, the protruding structure is located in the second chamber and is arranged in a ring shape along the circumference of the outer side wall of the valve needle.

[0015] Optionally, the flow regulating valve further includes a gasket, which is disposed at the first opening, and a distance between the valve needle seat and the first opening is less than 4 mm.

[0016] Optionally, the distance between the protruding structure and the sealing seat is between 0-1.5 mm.

[0017] Optionally, the flow regulating valve also includes a second elastic member, which is sleeved on the outer periphery of the valve needle, and one end of the second elastic member is located in the first chamber, and the other end of the second elastic member is located in the valve cavity, and the second elastic member is used to apply a force to the valve port assembly to block the first opening.

[0018] Optionally, the second elastic member includes a spring.

[0019] Optionally, the flow regulating valve further comprises a gasket, which is arranged at the first opening, and one end of the valve needle seat close to the first opening abuts against the gasket to seal the first opening.

[0020] Optionally, a connection between the gasket and an end of the valve needle seat close to the first opening is an inclined surface.

[0021] According to a second aspect of the present application, a thermal management system is provided, comprising the above-mentioned flow regulating valve.

[0022] According to a third aspect of the present application, a vehicle is also provided, comprising the above thermal management system.

[0023] The flow regulating valve in the embodiment of the present application utilizes a driving valve needle assembly to move, or a driving assembly is used to drive the valve needle assembly to move and drive the valve port assembly to move, so that the flow regulating valve can simultaneously achieve flow regulation under small flow conditions and large flow conditions. In this way, the above functions can be achieved without combining multiple components, thereby reducing the use cost of flow regulation and improving the convenience of flow regulation.

[0024] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0026] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0027] Figure 1 is a schematic structural diagram of a flow control valve in a closed valve state provided in an exemplary embodiment of the present disclosure;

[0028] Figure 2 is an internal cross-sectional view of a flow control valve provided in an exemplary embodiment of the present disclosure in a first valve opening state;

[0029] Figure 3 is an internal cross-sectional view of a flow control valve provided in an exemplary embodiment of the present disclosure in a second valve opening state;

[0030] Figure 4 is a cross-sectional schematic diagram of a valve port assembly and a valve needle assembly provided in an exemplary embodiment of the present disclosure;

[0031] Figure 5 Schematic diagram of a cross-section of a valve port assembly provided in an exemplary embodiment of the present disclosure.

[0032] Description of reference numerals:

[0033] 1. Flow control valve;

[0034] 10. valve body; 11. valve chamber; 12. first opening; 13. second opening;

[0035] 20. Valve core;

[0036] 30. Valve port assembly; 31. First accommodating chamber; 32. Third opening; 33. Fourth opening; 34. Valve port ring; 35. First chamber; 36. Second chamber; 37. Valve needle seat; 38. Sealing seat; 39. Fourth chamber;

[0037] 40. Valve needle assembly; 41. Valve needle; 42. Driving rod; 43. Accommodating groove; 44. Third chamber; 45. First elastic member;

[0038] 50. Drive assembly;

[0039] 60. Sealing member; 70. Pressing member; 80. Clamping portion; 90. Second elastic member; 100. Gasket. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0041] like Figure 1-Figure 5 As shown, according to the first aspect of the present application, there is provided a flow regulating valve 1, comprising: a valve body 10, having a valve cavity 11 and a first opening 12 and a second opening 13 respectively connected to the valve cavity 11; a valve core 20, comprising a valve port assembly 30 and a valve needle assembly 40, the valve port assembly 30 is movably arranged in the valve cavity 11, and is used to block or open the first opening 12, the valve port assembly 30 has a first accommodating cavity 31 and a third opening 32 and a fourth opening 33 respectively connected to the first accommodating cavity 31, the third opening 32 is connected to the first opening 12, and the fourth opening 33 is connected to the second opening 13, the valve needle assembly 40 is at least partially movably arranged in the first accommodating cavity 31, and is used to block or open the third opening 32; a drive assembly 50, which is drivingly connected to the valve core 20, the drive assembly 50 is used to drive the valve needle assembly 40 to move, or the drive assembly 50 is used to drive the valve needle assembly 40 to move and drive the valve port assembly 30 to move.

[0042] The flow regulating valve 1 of the embodiment of the present application includes: a valve body 10, having a valve cavity 11 and a first opening 12 and a second opening 13 respectively connected to the valve cavity 11; a valve core 20, including a valve port assembly 30 and a valve needle assembly 40, the valve port assembly 30 is movably arranged in the valve cavity 11, and is used to block or open the first opening 12, the valve port assembly 30 has a first accommodating cavity 31 and a third opening 32 and a fourth opening 33 respectively connected to the first accommodating cavity 31, the third opening 32 is connected to the first opening 12, and the fourth opening 33 is connected to the second opening 13, the valve needle assembly 40 is at least partially movably arranged in the first accommodating cavity 31, and is used to block or open the third opening 32; a drive assembly 50, which is drivingly connected to the valve core 20, and the drive assembly 50 is used to drive the valve needle assembly 40 and / or the valve port assembly 30 to move. Through the above technical solution, the driving assembly 50 is used to drive the valve needle assembly 40 and the valve port assembly 30 to move, so that the flow control valve 1 can simultaneously realize flow regulation under small flow conditions and large flow conditions. In this way, the above functions can be realized without combining multiple components, thereby reducing the number of parts and the cost of use during flow regulation and improving the convenience of flow regulation.

[0043] In the present application, the driving assembly 50 is a coil and a magnetic rotor, which can not only achieve precise driving of the valve needle assembly 40 and the valve port assembly 30, but also has a simple structure, thereby reducing the driving cost of the device.

[0044] like Figure 1 As shown, in the present application, when the valve is in the closed state, the valve needle seat 37 and the valve body 10 are tightly fitted under the action of the second elastic member 90. At the same time, the valve needle assembly 40 and the valve port assembly 30 cooperate with each other and are in a cut-off state, that is, the valve needle 41 and the valve needle seat 37 are sealed at the contact surface to achieve two-way closure of the flow channel.

[0045] like Figure 2 As shown, in the present application, in the first valve opening state, that is, the small flow condition, the valve needle seat 37 and the valve body 10 assembly are tightly fitted under the action of the second elastic member 90 and are located in their valve closing position; at this time, the coil is energized to drive the magnetic rotor assembly to rotate, and the magnetic rotor assembly drives the valve needle assembly 40 to move upward along its axis under the action of the drive rod 42. The flow channel is connected through the valve needle seat 37 at this time. The valve needle 41 adopts a variable cross-section design to achieve flow regulation under small flow conditions. When the valve needle assembly 40 moves axially, the movement distance is controlled by the magnetic rotor and the coil.

[0046] like Figure 3As shown, in the present application, in the second valve opening state, that is, the large flow condition, the valve needle assembly 40 continues to move upward along the axis, and after contacting the valve port ring 34, provides an upward force. At this time, the valve port assembly 30, under the action of the valve needle assembly 40, overcomes the elastic force of the downward second elastic member 90, and moves upward along the axis together with the valve needle assembly 40. During the movement, the flow area of ​​the valve port assembly 30 and the valve seat is also variable during the movement of the valve port assembly 30, and the valve needle assembly 40 and the valve port assembly 30 remain relatively stationary.

[0047] Optionally, the valve needle assembly 40 includes a valve needle 41 and a driving rod 42, one end of the driving rod 42 is connected to one end of the valve needle 41, and the driving assembly 50 is drivingly connected to the driving rod 42, and the driving assembly 50 is used to drive the driving rod 42 to drive the valve needle 41 to move, so that the other end of the valve needle 41 blocks or opens the third opening 32. This arrangement can achieve a small flow condition of the device, thereby meeting the use requirements of the device.

[0048] Optionally, the valve needle assembly 40 further includes a first elastic member 45, the valve needle 41 has a receiving groove 43, one end of the driving rod 42 and the first elastic member 45 are both arranged in the receiving groove 43, the two ends of the first elastic member 45 are respectively in contact with one end of the driving rod 42 and the inner wall of the receiving groove 43, and the first elastic member 45 is used to apply a force from the driving rod 42 toward the valve needle 41 to the valve needle 41. In this way, the first elastic member 45 can be used to apply a force toward the third opening 32 to the valve needle 41, so as to achieve the function of the valve needle 41 blocking the third opening 32 in the valve closing state.

[0049] Optionally, the drive rod 42 includes a screw rod, and the drive assembly 50 is threadedly connected to the screw rod to drive the drive rod 42 to move. The screw rod transmission, especially the ball screw helical transmission, has a greatly improved transmission efficiency. Since the friction resistance of the screw rod transmission is greatly reduced and the transmission efficiency is high, the driving efficiency of the drive assembly 50 can be improved to meet the driving requirements of the device.

[0050] Optionally, the valve port assembly 30 includes: a valve port ring 34, having a first chamber 35 and a second chamber 36 arranged and connected along the axial direction of the valve body 10, the first chamber 35 and the second chamber 36 together form a first accommodating chamber 31, and the second chamber 36 is arranged near the first opening 12. The valve needle seat 37 has a third chamber 44 and a third opening 32 and a fourth opening 33 connected to the third chamber 44, and the valve needle 41 is at least partially connected to the first chamber 35, the second chamber 36 and the third chamber 44. By setting the above structure, at least part of the valve needle 41 is connected to the first chamber 35, the second chamber 36 and the third chamber 44, and the space of the valve port ring 34 and the valve needle seat 37 is reasonably used, which can not only drive the valve port ring 34 and the valve needle seat 37 to move, but also reduce the overall volume of the device to a certain extent, thereby facilitating the miniaturization of the device.

[0051] Optionally, the valve port assembly 30 further includes a sealing seat 38, which is disposed in the third chamber 44, and the outer diameter of the sealing seat 38 is greater than the inner diameter of the third chamber 44. In the present application, the sealing seat 38 and the third chamber 44 are configured to be interference fit, and the valve needle seat 37 and the sealing seat 38 are integrally processed, which can ensure the coaxiality of the sealing position of the valve needle assembly 40 and the valve needle seat 37, and also improve the sealing effect of the sealing seat 38.

[0052] Optionally, the sealing seat 38 has a fourth chamber 39, and a sealing member 60 is provided in the fourth chamber 39, and the sealing member 60 is sleeved on the valve needle 41. By providing the sealing member 60 in the fourth chamber 39, the sealing effect of the sealing seat 38 can be further improved, which is conducive to maintaining the stability of the flow control valve during operation.

[0053] Optionally, a pressing member 70 is further provided in the fourth chamber 39, and the pressing member 70 and the sealing member 60 are arranged along the axial direction of the valve body 10, and the pressing member 70 is arranged close to the first chamber 35 relative to the sealing member 60, and the pressing member 70 is sleeved on the valve needle 41. By providing the above structure, not only can the limiting effect on the valve needle 41 be achieved, but also the consistency of the filling rate of the sealing ring can be ensured by using the pressing member 70, so as to improve the sealing effect of the sealing seat 38 as much as possible, thereby extending the service life of the flow control valve.

[0054] Optionally, the valve needle 41 has a clamping portion 80, which is used to drive the valve assembly 30 to move to block or open the first opening 12. By setting the above structure, the valve assembly 30 can be moved without adding additional components, which can reduce the production cost of the device and realize mass production of the device.

[0055] Optionally, the outer wall of the valve needle 41 has a protruding structure, which can cooperate with the inner wall of the valve ring 34 to drive the valve assembly 30 to move. The above structure is simple and easy to process, which can not only meet the driving requirements of the device, but also reduce the production difficulty of the device, thereby further reducing the production cost of the device.

[0056] Optionally, the protruding structure is located in the second chamber 36 and is arranged in a circumferential ring along the outer wall of the valve needle 41. The above arrangement can ensure the integrity of the protruding structure and the valve needle 41, and at the same time, when the valve needle 41 drives the valve port assembly 30, the tightness of the connection between the two can be ensured, which is conducive to maintaining the stability of the valve port assembly 30 when it moves.

[0057] Optionally, the flow regulating valve 1 further comprises a gasket 100, which is arranged at the first opening 12, and the distance between the valve needle seat 37 and the first opening 12 is less than 4 mm. When the distance between the valve needle seat 37 and the first opening 12 is greater than 4 mm, the moving distance of the valve port assembly 30 is too large, so that the flow rate of the fluid in the flow channel is too large, which is not conducive to the precise control of the flow rate.

[0058] Optionally, the distance between the protrusion structure and the sealing seat 38 is between 0-1.5 mm. When the distance between the protrusion structure and the sealing seat 38 is greater than 1.5 mm, the moving distance of the protrusion structure is too large, so that the flow rate of the fluid in the flow channel is too large, which is not conducive to the precise control of the flow rate, and at the same time, the protrusion structure and the valve port assembly 30 collide, affecting the sealing performance of the valve port assembly 30 to the first opening 12.

[0059] Optionally, the flow control valve 1 further comprises a second elastic member 90, which is sleeved on the outer periphery of the valve needle 41, and one end of the second elastic member 90 is located in the first chamber 35, and the other end of the second elastic member 90 is located in the valve cavity 11, and the second elastic member 90 is used to apply a force to the valve port assembly 30 to block the first opening 12. The above structure is simple, which not only facilitates the installation and disassembly of the assembly and reduces the use cost, but also can satisfy the function of the valve port assembly 30 to block the first opening 12.

[0060] Optionally, the second elastic member 90 includes a spring. The above structure has excellent durability and long life, can withstand the test of time, and can maintain stable performance even in high-frequency and high-intensity use environments, thereby ensuring the stability of the device during use.

[0061] Optionally, the flow regulating valve 1 also includes a gasket 100, which is arranged at the first opening 12, and one end of the valve needle seat 37 close to the first opening 12 abuts against the gasket 100 to seal the first opening 12. In the present application, the material of the gasket 100 is polytetrafluoroethylene. PTFE (polytetrafluoroethylene) is a high-performance plastic that can resist various strong acids, strong alkalis, strong oxidants and organic solvents, ensuring reliability in extreme corrosive environments. At the same time, the long-term use temperature range is 200 to 260 degrees Celsius, and it is resistant to low temperatures down to -100 degrees Celsius to maintain the softness of the material. This arrangement can ensure the service life of the gasket 100 and reduce the use cost of the gasket 100.

[0062] Optionally, the connection between the gasket 100 and the end of the valve needle seat 37 close to the first opening 12 is an inclined surface. Due to the particularity of the material, the gasket 100 has a circle of raised structures on the periphery, which is an interference fit with the valve body 10, and the rest of the positions are clearance fits, so as to ensure the roundness and coaxiality of the inclined sealing position after assembly.

[0063] According to a second aspect of the present application, a thermal management system is provided, comprising the above-mentioned flow regulating valve 1 .

[0064] According to a third aspect of the present application, a vehicle is also provided, comprising the above thermal management system.

[0065] The flow regulating valve 1 of the embodiment of the present application includes: a valve body 10, having a valve cavity 11 and a first opening 12 and a second opening 13 respectively connected to the valve cavity 11; a valve core 20, including a valve port assembly 30 and a valve needle assembly 40, the valve port assembly 30 is movably arranged in the valve cavity 11, and is used to block or open the first opening 12, the valve port assembly 30 has a first accommodating cavity 31 and a third opening 32 and a fourth opening 33 respectively connected to the first accommodating cavity 31, the third opening 32 is connected to the first opening 12, and the fourth opening 33 is connected to the second opening 13, the valve needle assembly 40 is at least partially movably arranged in the first accommodating cavity 31, and is used to block or open the third opening 32; a drive assembly 50, which is drivingly connected to the valve core 20, and the drive assembly 50 is used to drive the valve needle assembly 40 and / or the valve port assembly 30 to move. Through the above technical solution, the driving assembly 50 is used to drive the valve needle assembly 40 and the valve port assembly 30 to move, so that the flow control valve 1 can simultaneously realize flow regulation under small flow conditions and large flow conditions. In this way, the above function can be achieved without combining multiple parts, thereby reducing the number of parts and the cost of use during flow regulation.

[0066] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0067] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0068] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0069] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0070] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0071] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A flow control valve, characterized in that: include: A valve body having a valve cavity and a first opening and a second opening respectively connected to the valve cavity; A valve core, comprising a valve port assembly and a valve needle assembly, wherein the valve port assembly is movably disposed in the valve cavity and used to block or open the first opening, the valve port assembly has a first accommodating cavity and a third opening and a fourth opening respectively connected to the first accommodating cavity, the third opening can be used to communicate with the first opening, and the fourth opening is connected to the second opening, and the valve needle assembly is at least partially movably disposed in the first accommodating cavity and used to block or open the third opening; A drive assembly is connected to the valve core drivingly, and the drive assembly is used to drive the valve needle assembly to move, or the drive assembly is used to drive the valve needle assembly to move and drive the valve port assembly to move.

2. The flow control valve according to claim 1, characterized in that: The valve needle assembly includes a valve needle and a driving rod, one end of the driving rod is connected to one end of the valve needle, and the driving assembly is drivingly connected to the driving rod. The driving assembly is used to drive the driving rod to drive the valve needle to move, so that the other end of the valve needle blocks or opens the third opening.

3. The flow control valve according to claim 2, characterized in that: The valve needle assembly also includes the first elastic member, the valve needle has a receiving groove, one end of the drive rod and the first elastic member are both arranged in the receiving groove, the two ends of the first elastic member are respectively abutted against one end of the drive rod and the inner wall of the receiving groove, and the first elastic member is used to apply a force from the drive rod toward the valve needle.

4. The flow control valve according to claim 2, characterized in that: The driving rod comprises a screw rod, and the driving assembly is threadedly connected with the screw rod to drive the driving rod to move.

5. The flow control valve according to claim 2, characterized in that: The valve port assembly comprises: A valve port ring, comprising a first chamber and a second chamber arranged axially along the valve body and communicating with each other, wherein the first chamber and the second chamber together form the first accommodating cavity, and the second chamber is arranged close to the first opening; The valve needle seat is arranged in the second chamber, and the valve needle seat has a third chamber and the third opening and the fourth opening connected to the third chamber. The valve needle is at least partially connected to the first chamber, the second chamber and the third chamber.

6. The flow control valve according to claim 5, characterized in that: The valve port assembly further includes a sealing seat, which is disposed in the third chamber, and an outer diameter of the sealing seat is greater than an inner diameter of the third chamber.

7. The flow control valve according to claim 6, characterized in that: The sealing seat has a fourth chamber, the fourth chamber has a sealing member, and the sealing member is sleeved on the valve needle.

8. The flow control valve according to claim 7, characterized in that: A pressing piece is also arranged in the fourth chamber. The pressing piece and the sealing piece are arranged along the axial direction of the valve body. The pressing piece is arranged close to the first chamber relative to the sealing piece, and the pressing piece is sleeved on the valve needle.

9. The flow control valve according to claim 6, characterized in that: The valve needle has a clamping portion, and the clamping portion is used to drive the valve port assembly to move to block or open the first opening.

10. The flow control valve according to claim 9, characterized in that: The outer side wall of the valve needle is provided with a protruding structure, and the protruding structure can be limitedly matched with the inner wall of the valve port ring to drive the valve port assembly to move.

11. The flow control valve according to claim 10, characterized in that: The protruding structure is located in the second chamber and is arranged in a ring shape along the circumference of the outer side wall of the valve needle.

12. The flow control valve according to claim 9, characterized in that: The flow regulating valve further includes a gasket, which is disposed at the first opening, and a distance between the valve needle seat and the gasket is less than 4 mm.

13. The flow control valve according to claim 11, characterized in that: The distance between the protruding structure and the sealing seat is between 0-1.5 mm.

14. The flow control valve according to claim 1, characterized in that: The flow regulating valve also includes a second elastic member, which is sleeved on the outer periphery of the valve needle, and one end of the second elastic member is located in the first chamber, and the other end of the second elastic member is located in the valve cavity, and the second elastic member is used to apply a force to the valve port assembly to block the first opening.

15. The flow control valve according to claim 14, characterized in that: The second elastic member includes a spring.

16. The flow control valve according to claim 5, characterized in that: The flow regulating valve further includes a gasket, which is disposed at the first opening. One end of the valve needle seat close to the first opening abuts against the gasket to seal the first opening.

17. The flow control valve according to claim 16, characterized in that: The connection between the gasket and the end of the valve needle seat close to the first opening is an inclined surface.

18. A thermal management system, characterized in that: A flow regulating valve comprising any one of claims 1-17.

19. A vehicle, characterized in that: Comprising the thermal management system of claim 18.

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