Valve core assembly of electric valve, electric valve, thermal management system, and vehicle

Abstract

A vehicle, provided with a thermal management system. The thermal management system is provided with an electric valve (100). The electric valve is provided with a valve core assembly (10). The valve core assembly (10) comprises a valve core body (1) configured to allow a valve rod (3) of the electric valve to pass through, and a rotation stopping member (2) configured to be connected to a driving member (4) that drives the valve rod (3) to move; the outer circumferential surface of the valve core body (1) is provided with a spiral limiting groove (11) and an abutting portion (14); the spiral limiting groove (11) is in guide fit with the rotation stopping member (2); the abutting portion (14) is configured to stop the rotation stopping member (2); the spiral limiting groove (11) comprises a first groove section (12) and a second groove section (13), the groove width of the second groove section (13) is smaller than that of the first groove section (12), and the second groove section (13) is located between the first groove section (12) and the abutting portion (14).

Description

Electric valve core assembly, electric valve, thermal management system and vehicle

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to a Chinese patent application filed with the Patent Office of China on June 27, 2023, with application number 202321656480.8 and titled “Valve core assembly of electric valve, electric valve, thermal management system and vehicle,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0003] The present disclosure relates to the technical field of electric valve structures, and in particular to a valve core assembly of an electric valve, an electric valve, a thermal management system, and a vehicle. Background Art

[0004] Electric valves use a driver to control the movement of the valve stem to open or close the control flow path. To limit the range of movement of the valve stem, a stopper and an abutment for stopping the stopper are usually provided in related technologies. Specifically, the driver is connected to the stopper, so that when the driver drives the valve stem to move, the stopper moves with it. When the stopper abuts the abutment, the movement of the driver is restricted, thereby limiting the range of movement of the valve stem. However, during the abutment between the stopper and the abutment, the stopper is prone to a large impact with the abutment due to excessive speed, thus generating noise, causing abnormal sounds inside the electric valve and affecting the user experience.

[0005] Summary of the Invention

[0006] The purpose of the present disclosure is to provide a valve core assembly of an electric valve, an electric valve, a thermal management system and a vehicle to solve the problems in the above-mentioned related art.

[0007] In order to achieve the above-mentioned object, the present disclosure provides a valve core assembly of an electric valve in a first aspect, the valve core assembly comprising a valve core body and a stopper, the valve core body being used for allowing a valve stem of the electric valve to pass through, the stopper being used for connecting to a driving member that drives the valve stem to move, a spiral limiting groove and an abutment being formed on an outer peripheral surface of the valve core body, the spiral limiting groove being guided and matched with the stopper, and the abutment being used for stopping the stopper;

[0008] The spiral limiting groove includes a first groove section and a second groove section, the groove width of the second groove section is smaller than the groove width of the first groove section, and the second groove section is located between the first groove section and the abutting portion.

[0009] Optionally, the second slot section includes a first portion and a second portion, the first portion is located between the first slot section and the second portion, and the slot width of the first portion gradually decreases along the direction from the first slot section to the second portion.

[0010] Optionally, the first groove section has two opposite first side groove walls, and the second groove section has two opposite second side groove walls, and the second side groove walls protrude outward from the first side groove walls along the radial direction of the valve core body.

[0011] Optionally, one end of the two second side groove walls away from the first groove section is connected to the abutment portion.

[0012] Optionally, along a radial direction of the valve core body outward away from the valve core body, a distance between the inner surfaces of the two second side groove walls gradually decreases.

[0013] Optionally, the anti-rotation member includes an annular main body and a connecting portion, the annular main body is movably arranged in the spiral limiting groove, one end of the connecting portion is connected to the annular main body, and the other end of the connecting portion extends outward from the spiral limiting groove and is used to connect with the driving member, at least part of the connecting portion can be located in the second groove section when the anti-rotation member abuts against the abutting portion.

[0014] Optionally, the connecting portion further includes an arcuate transition section and an extension section, one end of the arcuate transition section is connected to the end of the annular main body portion close to the abutting portion, and the extension section extends from the other end of the arcuate transition section in a direction away from the spiral limiting groove, and at least part of the arcuate transition section can be located in the second groove section when the connecting portion abuts against the abutting portion.

[0015] Optionally, the abutment portion includes an abutment member and a buffer member, and when the anti-rotation member abuts against the abutment portion, the buffer member is located between the abutment member and the anti-rotation member.

[0016] Optionally, the anti-rotation member is made of elastic material, and the abutment portion includes a first abutment portion arranged at one end of the spiral limiting groove and a second abutment portion arranged at the other end of the spiral limiting groove, the second groove section is located between one end of the first groove section and the first abutment portion, and the second abutment portion is located at the other end of the first groove section.

[0017] Optionally, the abutment portion includes a first abutment portion arranged at the first end of the spiral limiting groove and a second abutment portion arranged at the second end of the spiral limiting groove, and the spiral limiting groove includes two second groove sections, one of the two second groove sections is located between the first abutment portion and the first end of the first groove section, and the other of the two second groove sections is located between the second abutment portion and the second end of the first groove section.

[0018] Optionally, the difference between the groove width of the second groove segment and the thickness of the portion of the rotation-stopping member located in the second groove segment is less than or equal to 0.1 mm.

[0019] The second aspect of the present disclosure provides an electric valve, comprising a valve stem, a driving member and the valve core assembly of the above-mentioned electric valve, wherein the valve stem passes through the valve core body of the valve core assembly, the driving member is connected to the valve stem and is used to drive the valve stem to move, and the anti-rotation member is connected to the driving member.

[0020] Optionally, the driving member includes a magnetic rotor, which is sleeved on the outside of the valve core body and can rotate relative to the valve core body;

[0021] A protrusion is formed on the inner top wall or the inner side wall of the magnetic rotor, and the protrusion is connected to the anti-rotation member to drive the anti-rotation member to move in the spiral limiting groove.

[0022] A third aspect of the present disclosure provides a thermal management system, comprising the above-mentioned electric valve.

[0023] A fourth aspect of the present disclosure provides a vehicle comprising the above-mentioned thermal management system.

[0024] Through the above technical solution, the second groove section in the valve core assembly can play a tighter clamping role on the stop member, which can reduce the shaking amplitude or stringing amplitude of the stop member when moving in the second groove section, thereby reducing the noise generated by the stop member in the second groove section and improving the stability of the stop member moving in the second groove section. The second groove section can also play a deceleration and buffering role on the movement of the driving member. Before the stop member moves toward the abutment portion and abuts therewith, the stop member passes through the second groove section and decelerates in the second groove section to achieve buffering, so that the stop member has a lower speed when abutting the abutment portion, thereby effectively reducing the collision noise when the stop member abuts the abutment portion.

[0025] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0027] FIG1 is a perspective view of a valve core assembly provided by an exemplary embodiment of the present disclosure, wherein a rotation-stopping member abuts against a first abutting portion.

[0028] FIG2 is an enlarged view of portion A in FIG1 .

[0029] FIG. 3 is a partial front view of a valve core assembly provided in accordance with an exemplary embodiment of the present disclosure.

[0030] FIG4 is a perspective view of a valve core assembly provided by another exemplary embodiment of the present disclosure, wherein the anti-rotation member abuts against the second abutting portion.

[0031] FIG. 5 is a perspective view of a rotation stopper of a valve core assembly provided in accordance with an exemplary embodiment of the present disclosure.

[0032] FIG6 is a cross-sectional view of an electric valve provided according to an exemplary embodiment of the present disclosure.

[0033] FIG. 7 is a perspective view of a driving member of an electric valve according to an exemplary embodiment of the present disclosure. DETAILED DESCRIPTION

[0034] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0035] In this disclosure, unless otherwise indicated, directional terms such as "upper," "lower," "left," and "right" generally refer to the directions of the drawings. "Inner" and "outer" refer to the inside and outside of the relevant component. Furthermore, the terms "first," "second," and the like are used solely for purposes of distinction and are not to be construed as indicating or implying relative importance.

[0036] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they may refer to a fixed connection, a detachable connection, or an integral connection. They may be directly connected or indirectly connected through an intermediate medium, or they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on specific circumstances.

[0037] In the related art, an electric valve generally refers to a valve structure that electrically drives the valve core to move to block or open the valve port, such as a solenoid valve. An electric valve generally includes a driver, a valve stem, and a valve needle connected to the valve stem. The driver, under the action of a driving mechanism (for example, a coil assembly drives the magnetic rotor to rotate), can drive the valve stem to rotate to drive the valve needle closer to or away from the valve port, thereby achieving the blocking or opening of the valve port. In the above process, a stopper and an abutment portion are usually required to be provided in the electric valve to achieve corresponding limit on the stroke of the driver or screw to prevent its movement from exceeding the stroke range and affecting the functionality of the electric valve. In the related art, an electric valve is generally provided with a stopper connected to the driver. The stopper can cooperate with the abutment portion during the stroke following the movement of the driver to limit the further movement of the driver. However, during the abutment between the stopper and the abutment portion, it is easy for the abutment portion to collide with the abutment portion, thereby generating collision noise, causing abnormal noise inside the electric valve, affecting the user experience.

[0038] In view of this, as shown in Figures 1 to 6, the first aspect of the present disclosure provides a valve core assembly 10 of an electric valve 100, which includes a valve core body 1 and a stop member 2. The valve core body 1 is used for the valve stem 3 of the electric valve 100 to pass through, and the stop member 2 is used to connect with the driving member 4 that drives the valve stem 3 to move. A spiral limiting groove 11 and an abutment 14 are formed on the outer peripheral surface of the valve core body 1. The spiral limiting groove 11 is guided and matched with the stop member 2, and the abutment 14 is used to stop the stop member 2. The spiral limiting groove 11 includes a first groove section 12 and a second groove section 13. The groove width of the second groove section 13 is smaller than the groove width of the first groove section 12, and the second groove section 13 is located between the first groove section 12 and the abutment 14.

[0039] The above-mentioned valve core assembly 10 is applied to the electric valve 100. The valve core body 1 can be used to allow the valve stem 3 of the electric valve 100 to pass through. The driving member 4 of the electric valve 100 is connected to the valve stem 3 and the stop member 2. The spiral limit groove 11 is guided by the stop member 2. The driving member 4 can drive the valve stem 3 to move and simultaneously drive the stop member 2 to move along the spiral limit groove 11. It should be noted that the stop member 2 is guided by the spiral limit groove 11, that is, the stop member 2 can move along the extension direction of the spiral limit groove 11 under the guidance of the spiral limit groove 11. Since the spiral limit groove 11 is a spiral groove formed on the outer peripheral surface of the valve core body 1, when the stop member 2 moves along the extension direction of the spiral limit groove 11, the stop member 2 also rotates around the valve core body 1. The spiral limiting groove 11 includes a first groove section 12 and a second groove section 13. The groove width of the second groove section 13 is smaller than that of the first groove section 12. It should be noted that the groove width of the first groove section 12 refers to the distance between the two groove walls forming the first groove section 12. For example, the first groove section 12 has two opposing first side groove walls 121, and the straight-line distance between the two first side groove walls 121 is the groove width of the first groove section 12. Similarly, the groove width of the second groove section 13 refers to the distance between the two groove walls forming the second groove section 13.

[0040] Since the groove width of the second groove section 13 is smaller than that of the first groove section 12, when the stopper 2 moves from the first groove section 12 to the second groove section 13, the second groove section 13 can clamp the stopper 2 more tightly, which can reduce the swing amplitude or string amplitude of the stopper 2 when moving in the second groove section 13, thereby reducing the noise generated by the stopper 2 in the second groove section 13 and improving the movement stability of the stopper 2. In addition, since the groove width of the second groove section 13 is smaller, the stopper 2 is more likely to rub against the groove wall of the second groove section 13 when moving in the second groove section 13. Therefore, the resistance encountered by the stopper 2 when moving in the second groove section 13 is greater than the resistance encountered by the stopper 2 when moving in the first groove section 12. The second groove section 13 can play a role in slowing down and buffering the movement of the stopper 2. The second groove section 13 is located between the first groove section 12 and the abutment portion 14. Before the stop member 2 moves toward the abutment portion 14 and contacts the abutment portion 14, the stop member 2 first passes through the second groove section 13. The second groove section 13 has a speed-reducing and buffering effect on the stop member 2, so that the stop member 2 has a smaller speed when abutting against the abutment portion 14, thereby effectively reducing the collision noise when the stop member 2 abuts against the abutment portion 14.

[0041] Through the above technical solution, the second groove section 13 in the valve core assembly 10 can play a tighter clamping role on the stop member 2, which can reduce the shaking amplitude or stringing amplitude of the stop member 2 when moving in the second groove section 13, thereby reducing the noise generated by the stop member 2 in the second groove section 13 and improving the stability of the stop member 2 moving in the second groove section 13. The second groove section 13 can also play a deceleration and buffering role on the movement of the driving member 4. Before the stop member 2 moves toward the abutment portion 14 and abuts therewith, the stop member 2 passes through the second groove section 13 and decelerates in the second groove section 13 to achieve buffering, so that the stop member 2 has a lower speed when abutting the abutment portion 14, thereby effectively reducing the collision noise when the stop member 2 abuts the abutment portion 14.

[0042] It should be noted that the connection between the above-mentioned stop member 2 and the driving member 4 means that the stop member 2 and the driving member 4 can be fixedly connected by welding, bonding or clamping, or the above-mentioned stop member 2 can also abut against the driving member 4, that is, there is no fixed connection relationship between the stop member 2 and the driving member 4, but a selectively separable connection is achieved by abutment. The present disclosure does not limit the specific connection method between the stop member 2 and the driving member 4. The above-mentioned second groove segment 13 is located between the first groove segment 12 and the abutment portion 14, specifically, the first groove segment 12, the second groove segment 13 and the abutment portion 14 are arranged in sequence in the spiral extension direction of the spiral limiting groove 11, so that when the stop member 2 moves under the guidance of the spiral limiting groove 11, it can pass through the first groove segment 12 and the second groove segment 13 in sequence to achieve abutment with the abutment portion 14.

[0043] In addition, the above-mentioned spiral limiting groove 11 can be formed as a continuous spiral limiting groove 11, or the spiral limiting groove 11 can also be formed as a discontinuous spiral limiting groove 11. In this embodiment, as shown in Figure 1, the spiral limiting groove 11 can include a plurality of groove body portions spaced apart along the extension direction, and the plurality of groove body portions are arranged in a spiral manner on the outer peripheral surface of the valve core body 1 to form the spiral limiting groove 11. The first groove section 12 can include one or more of the plurality of groove body portions, or the first groove section 12 can be a part of the groove body portion. Similarly, the second groove section 13 can include one or more of the plurality of groove body portions, or the first groove section 12 can be a part of the groove body portion. For example, as shown in Figure 2, the end of the groove body portion away from the abutment portion 14 constitutes a partial structure of the first groove section 12, and the end of the groove body portion close to the abutment portion is the second groove section 13. The present disclosure does not limit the specific composition of the spiral limiting groove 11. For the case where the spiral limit groove 11 is a discontinuous spiral limit groove 11, it can be understood that when the stop member 2 moves in the spiral limit groove 11, part of the stop member 2 may be in the groove body of the spiral limit groove 11.

[0044] The abutment portion 14 is used to stop the anti-rotation member 2. The abutment portion 14 can be located at the end of the spiral limiting groove 11 in the direction of spiral extension. The abutment portion 14 can be connected to the end of the spiral limiting groove 11, or the abutment portion 14 can be spaced apart from the end of the spiral limiting groove 11, that is, there can be a gap between the abutment portion 14 and the end of the spiral limiting groove 11. As shown in Figure 1, there can be two abutment portions 14, and the two abutment portions 14 can be located at both ends of the spiral limiting groove 11 in the direction of spiral extension.

[0045] The valve core assembly 10 provided in the present disclosure is applied to an electric valve 100. Here, the electric valve 100 can be an electric on / off valve or a flow control valve, etc., and the present disclosure does not limit the specific type of electric valve 100. The driving member 4 within the electric valve 100 can be any structure, such as a magnetic rotor 41 or a threaded sleeve. In an exemplary embodiment, the driving member 4 can be a magnetic rotor 41, which can rotate under the drive of the coil assembly, thereby driving the valve stem 3. The valve core body 1 is used to pass through the valve stem 3 of the electric valve 100. The valve core body 1 can be formed with a mounting hole for the valve stem 3 to pass through. Optionally, at least a portion of the interior of the mounting hole is formed with a threaded section. The outer peripheral surface of the valve stem 3 can be formed with external threads. The valve stem 3 is disposed in the mounting hole and is threadedly connected to the mounting hole. When the magnetic rotor 41 drives the valve stem 3 to rotate, the valve stem 3 also undergoes axial movement relative to the valve core body 1. The operating principle and specific structure of the electric valve 100 can be implemented by those skilled in the art through relevant technologies, and this disclosure does not specifically limit them.

[0046] In the above embodiment, the stopper 2 is movable in the spiral limiting groove 11, that is, the groove width of the spiral limiting groove 11 is greater than the thickness of the portion of the stopper 2 located in the spiral limiting groove 11. Here, the groove width of the spiral limiting groove 11 and the thickness of the stopper 2 are in the same direction, thereby allowing the stopper 2 to move along the spiral limiting groove 11. Therefore, the groove width of the first groove segment 12 is greater than the thickness of the portion of the stopper 2 located in the first groove segment 12, and the groove width of the second groove segment 13 is greater than the thickness of the portion of the stopper 2 located in the second groove segment 13. In an exemplary embodiment, as shown in FIG3 , the groove width of the second groove segment 13 can be the size shown as W1, and the thickness of the portion of the stopper 2 located in the second groove segment 13 can be the size shown as W2.

[0047] As shown in FIG3 , optionally, the difference between the groove width of the second groove segment 13 and the thickness of the portion of the stop member 2 located in the second groove segment 13 can be less than or equal to 0.1 mm, and the groove width of the second groove segment 13 (as shown in W1 in FIG3 ) and the thickness of the portion of the stop member 2 located in the second groove segment 13 (as shown in W2 in FIG3 ) are in the same direction. As shown in FIG3 , the direction of the groove width of the second groove segment 13 and the direction of the thickness of the portion of the stop member 2 located in the second groove segment 13 are both parallel to the axial direction of the valve core body 1, that is, W1 and W2 The difference can be less than or equal to 0.1mm. In this embodiment, the gap between the groove wall of the second groove section 13 and the stop member 2 is small, and the second groove section 13 can play a good and tight clamping role on the stop member 2, and the stop member 2 is more likely to contact the groove wall of the second groove section 13 to generate friction when moving in the second groove section 13. The resistance encountered by the stop member 2 when moving in the second groove section 13 is large, and the second groove section 13 can play a good speed-reducing and buffering role on the movement of the stop member 2, thereby more effectively reducing the noise generated by the movement of the stop member 2.

[0048] In an exemplary embodiment, the second slot section 13 may optionally include a first portion 131 and a second portion 132. The first portion 131 is located between the first slot section 12 and the second portion 132. The slot width of the first portion 131 gradually decreases along the direction from the first slot section 12 to the second portion 132. The first portion 131 can guide the stop member 2, making the process of the stop member 2 entering the second slot section 13 from the first slot section 12 smoother, further reducing noise. In this embodiment, the connection between the first portion 131 and the first slot section 12 can optionally be a smooth transition, that is, the slot width of the first portion 131 near the end of the first slot section 12 can be the same as the slot width of the first slot section 12. Optionally, the slot width of the second portion 132 can be the same at all locations, or the slot width of the second portion 132 can gradually decrease along the direction from the first slot section 12 to the abutment portion 14.

[0049] As shown in Figure 2, optionally, the first groove section 12 has two opposite first side groove walls 121, and the second groove section 13 has two opposite second side groove walls 133. The second side groove walls 133 can protrude outward from the first side groove wall 121 radially along the valve core body 1. Since the second side groove walls 133 have a larger area in the radial direction of the valve core body 1, the two second side groove walls 133 can be more stably clamped on both sides of the stop member 2, and have a good limiting effect, which is beneficial to reducing the possibility of the stop member 2 shaking, stringing or shifting in the second groove section 13, thereby further reducing noise.

[0050] In the above embodiment, as shown in Figures 3 and 4, optionally, the ends of the two second side groove walls 133 away from the first groove section 12 can be connected to the abutment 14, that is, the two second side groove walls 133 and the abutment 14 can form a groove-shaped structure, and when the stop member 2 moves to abut the abutment 14, the abutment 14 can limit the further movement of the stop member 2, and the two second side groove walls 133 can be clamped on both sides of the stop member 2, and the two second side groove walls 133 and the abutment 14 can jointly play a good limiting role on the stop member 2.

[0051] Optionally, the distance between the inner surfaces of the two second side groove walls 133 facing each other can gradually decrease along the radial direction of the valve core body 1 away from the valve core body 1, so that the inner surfaces of the two second side groove walls 133 facing each other can better clamp and limit the stop member 2 and prevent the stop member 2 from falling out of the second groove section 13.

[0052] In order to facilitate the cooperation between the stopper 2 and the spiral limiting groove 11, the stopper 2 can be formed into an annular structure. As shown in Figures 2 to 5, the stopper 2 can optionally include an annular main body 21 and a connecting portion 22. The annular main body 21 is movably disposed in the spiral limiting groove 11, one end of the connecting portion 22 is connected to the annular main body 21, and the other end of the connecting portion 22 extends outward from the spiral limiting groove 11 and is used to connect with the driving member 4. At least a portion of the connecting portion 22 can be located in the second groove section 13 when the stopper 2 abuts against the abutting portion 14. As shown in Figure 2, the annular main body 21 can be sleeved on the outside of the valve core body 1 and arranged in the spiral limit groove 11. The connecting part 22 is connected between the annular main body 21 and the driving member 4. Since the driving member 4 drives the stop member 2 to move as a whole through the connecting part 22 of the stop member 2, the driving force on the connecting part 22 is greater than that on the annular main body 21, and it is more likely to shake or shift. When the stop member 2 and the abutting part 14 hit each other, at least part of the connecting part 22 can be located in the second groove section 13, ensuring that the connecting part 22 can be affected by the buffering and limiting effect of the second groove section 13, reducing the amplitude of shaking or displacement of the connecting part 22 during the force-bearing process, thereby effectively reducing the noise generated by the stop member 2.

[0053] In the above embodiment, the connecting portion 22 can be connected to the end of the annular main portion 21, or the connecting portion 22 can be connected to the middle of the annular main portion 21. In addition, there can be one or more connecting portions 22. As an exemplary embodiment, there can be two connecting portions 22 and they can be connected to the two ends of the annular main portion 21 respectively. In an embodiment in which the connecting portion 22 is connected to the end of the annular main portion 21, as shown in Figure 5, optionally, the connecting portion 22 may include an arcuate transition section 221 and an extension section 222, one end of the arcuate transition section 221 is connected to the end of the annular main portion 21 close to the abutting portion 14, and the extension section 222 extends from the other end of the arcuate transition section 221 toward a direction away from the spiral limiting groove 11, and at least part of the arcuate transition section 221 can be located in the second groove section 13 when the connecting portion 22 abuts against the abutting portion 14, and the connecting portion 22 can be smoothly connected to the annular main portion 21 through the arcuate transition section 221, and the arcuate transition section 221 can have good force transmission performance. The arcuate transition section 221 is limited by the second groove section 13, and can provide limiting force for both the annular main portion 21 and the extension section 222, thereby ensuring that the anti-rotation member 2 has good stability.

[0054] Optionally, the abutment portion 14 includes an abutment member and a buffer member. When the anti-rotation member 2 abuts the abutment portion 14, the buffer member may be located between the abutment member and the anti-rotation member 2. For example, the buffer member may be a gasket or a spring. The buffer member is located between the abutment member and the anti-rotation member 2 to buffer the impact force of the anti-rotation member 2 moving toward the abutment member, thereby reducing the noise generated when the anti-rotation member 2 abuts the abutment portion 14.

[0055] Optionally, the abutment portion 14 may include a first abutment portion 141 provided at one end of the spiral limiting groove 11 and a second abutment portion 142 provided at the other end of the spiral limiting groove 11. The second groove segment 13 may be located between the first abutment portion 141 and the first groove segment 12, or the second groove segment 13 may be located between the second abutment portion 142 and the first groove segment 12, or a second groove segment 13 may be provided between the first abutment portion 141 and the first groove segment 12 and between the second abutment portion 142 and the first groove segment 12, respectively.

[0056] As an exemplary embodiment, optionally, the abutment 14 may include a first abutment 141 arranged at the first end of the spiral limit groove 11 and a second abutment 142 arranged at the second end of the spiral limit groove 11, the spiral limit groove 11 includes two second groove sections 13, one of the two second groove sections 13 is located between the first abutment 141 and the first end of the first groove section 12 to reduce the noise generated when the stop member 2 abuts against the first abutment 141, and the other second groove section 13 of the two second groove sections 13 is located between the second abutment 142 and the second end of the first groove section 12 to reduce the noise generated when the stop member 2 abuts against the second abutment 142.

[0057] As another exemplary embodiment, the stopper 2 can optionally be made of an elastic material, such as a spring or a shrapnel, so that the stopper 2 can buffer the external force it receives through its own elastic deformation. In this embodiment, as an exemplary embodiment, the second slot section 13 can be located between one end of the first slot section 12 and the first abutment portion 141, and the second abutment portion 142 is located at the other end of the first slot section 12, so that the second abutment portion 142 is directly connected to the first slot section 12. In the above embodiment, as shown in Figures 1 to 3, when the stopper 2 moves toward the first abutment portion 141, the stopper 2 can be clamped and buffered by the second slot section 13, thereby reducing the abnormal sound generated by the contact between the stopper 2 and the first abutment portion 141. As shown in Figure 4, when the stopper 2 abuts the second abutment portion 142, since the stopper 2 is made of an elastic material, the elastic deformation of the stopper 2 can buffer the noise generated during the impact, thereby reducing the abnormal sound generated by the contact between the stopper 2 and the second abutment portion 142.

[0058] As shown in Figure 6, the second aspect of the present disclosure provides an electric valve 100, which includes a valve stem 3, a driving member 4 and the valve core assembly 10 of the above-mentioned electric valve 100, the valve stem 3 passes through the valve core body 1 of the valve core assembly 10, the driving member 4 is connected to the valve stem 3 and is used to drive the valve stem 3 to move, and the anti-rotation member 2 is connected to the driving member 4.

[0059] In the aforementioned electric valve 100, the second groove section 13 in the valve core assembly 10 can clamp the stop member 2, reducing the amplitude of the shaking or stringing of the stop member 2 when it moves within the second groove section 13, thereby reducing the noise generated by the stop member 2 within the second groove section 13. The second groove section 13 can also act as a deceleration buffer for the movement of the driving member 4, so that the stop member 2 has a lower speed when it abuts the abutment portion 14, thereby effectively reducing the collision noise when the stop member 2 abuts the abutment portion 14. As can be seen from this, the aforementioned electric valve 100 is quieter during use and provides a better user experience.

[0060] Optionally, the valve core body 1 and the valve stem 3 are threadedly matched, so that when the driving member 4 can drive the valve stem 3 to rotate, due to the threaded match between the valve core body 1 and the valve stem 3, when the valve stem 3 rotates, it will move along the axial direction of the valve core body 1.

[0061] The operating principle and specific structure of the above-mentioned electric valve 100 can be realized by those skilled in the art through relevant technologies, and this disclosure does not specifically limit this. As an exemplary embodiment, as shown in Figures 6 and 7, the driving member 4 can optionally include a magnetic rotor 41, which is mounted on the outside of the valve core body 1 and can rotate relative to the valve core body 1. The inner top wall or inner side wall of the magnetic rotor 41 is formed with a protrusion 411, which is connected to the stop member 2 to drive the stop member 2 to move within the spiral limit groove 11.

[0062] In the above embodiment, the electric valve 100 may further include a coil assembly, which may be sleeved around the outer side of the magnetic rotor 41 and drive the magnetic rotor 41 to rotate. As an exemplary embodiment, the valve core body 1 is connected to the valve seat 6. The valve core body 1 may be formed with a mounting hole for the valve stem 3 to pass through. The interior of the mounting hole may at least partially be formed with a threaded section. The outer peripheral surface of the valve stem 3 may be formed with external threads. The valve stem 3 is inserted into the mounting hole and threadedly connected thereto. As the magnetic rotor 41 drives the valve stem 3 to rotate, the valve stem 3 also simultaneously moves axially relative to the valve core body 1. The end of the valve stem 3 located within the valve core body 1 may be connected to a valve needle 5. The valve needle 5 engages with a valve port 61 formed in the valve seat 6. Axial movement of the valve stem 3 drives the valve needle 5 toward or away from the valve port 61, thereby blocking or opening the valve port 61, thereby achieving the function of the electric valve 100 to control the flow path or flow rate.

[0063] The third aspect of the present disclosure provides a thermal management system, including the above-mentioned electric valve 100. The thermal management system can be an equipment heat exchange system, an air-conditioning system, a vehicle air-conditioning thermal management system, a battery thermal management system, or a motor electronic control thermal management system, etc. The present disclosure does not impose specific restrictions on the type and application scenario of the thermal management system. The above-mentioned electric valve 100 is applied to the thermal management system. The electric valve 100 can be used to regulate the flow or cut-off of the refrigerant or coolant or to regulate the liquid flow in the flow channel, etc. The present disclosure does not impose restrictions on the specific position and function of the electric valve 100 in the thermal management system.

[0064] A fourth aspect of the present disclosure provides a vehicle including the aforementioned thermal management system. The vehicle may be a fuel-powered vehicle, an electric vehicle, or a hybrid vehicle, and the present disclosure does not limit the specific type of vehicle. The thermal management system may be a vehicle air conditioning thermal management system, a battery thermal management system, or an electric motor thermal management system, and the present disclosure does not limit the application location or function of the thermal management system in the vehicle.

[0065] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0066] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0067] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A valve core assembly (10) of an electric valve (100), characterized in that: include: A valve core body (1) is used for a valve stem (3) of an electric valve (100) to pass through, and a spiral limiting groove (11) and an abutment portion (14) are formed on the outer peripheral surface of the valve core body (1); and The anti-rotation member (2) is used to be connected to a driving member (4) that drives the valve stem (3) to move, the spiral limiting groove (11) is guided and matched with the anti-rotation member (2), and the abutment portion (14) is used to stop the anti-rotation member (2); The spiral limiting groove (11) comprises a first groove section (12) and a second groove section (13), the groove width of the second groove section (13) is smaller than the groove width of the first groove section (12), and the second groove section (13) is located between the first groove section (12) and the abutment portion (14).

2. The valve core assembly (10) of the electric valve (100) according to claim 1, characterized in that: The second slot section (13) comprises a first portion (131) and a second portion (132), wherein the first portion (131) is located between the first slot section (12) and the second portion (132), and the slot width of the first portion (131) gradually decreases along a direction from the first slot section (12) to the second portion (132).

3. The valve core assembly (10) of the electric valve (100) according to claim 1 or 2, characterized in that: The first groove section (12) has two opposite first side groove walls (121), and the second groove section (13) has two opposite second side groove walls (133), and the second side groove walls (133) protrude outwardly from the first side groove walls (121) along the radial direction of the valve core body (1).

4. The valve core assembly (10) of the electric valve (100) according to claim 3, characterized in that: One end of the two second side groove walls (133) away from the first groove section (12) is connected to the abutment portion (14).

5. The valve core assembly (10) of the electric valve (100) according to claim 3 or 4, characterized in that: Along the radial direction of the valve core body (1) and away from the valve core body (1), the distance between the inner surfaces of the two second side groove walls (133) gradually decreases.

6. The valve core assembly (10) of the electric valve (100) according to any one of claims 1 to 5, characterized in that: The anti-rotation member (2) includes an annular main body (21) and a connecting portion (22), wherein the annular main body (21) is movably arranged in the spiral limiting groove (11), one end of the connecting portion (22) is connected to the annular main body (21), and the other end of the connecting portion (22) protrudes outward from the spiral limiting groove (11) and is used to connect with the driving member (4), and at least a part of the connecting portion (22) can be located in the second groove section (13) when the anti-rotation member (2) abuts against the abutting portion (14).

7. The valve core assembly (10) of the electric valve (100) according to claim 6, characterized in that: The connecting portion (22) further comprises an arcuate transition section (221) and an extension section (222); one end of the arcuate transition section (221) is connected to the end of the annular main body (21) close to the abutting portion (14); the extension section (222) extends from the other end of the arcuate transition section (221) in a direction away from the spiral limiting groove (11); at least a portion of the arcuate transition section (221) can be located in the second groove section (13) when the connecting portion (22) abuts against the abutting portion (14).

8. The valve core assembly (10) of the electric valve (100) according to any one of claims 1 to 7, characterized in that: The abutment portion (14) comprises an abutment member and a buffer member. When the rotation-stopping member (2) abuts against the abutment portion (14), the buffer member is located between the abutment member and the rotation-stopping member (2).

9. The valve core assembly (10) of the electric valve (100) according to any one of claims 1 to 8, characterized in that: The anti-rotation member (2) is made of elastic material, and the abutment portion (14) includes a first abutment portion (141) arranged at one end of the spiral limiting groove (11) and a second abutment portion (142) arranged at the other end of the spiral limiting groove (11), the second groove section (13) is located between one end of the first groove section (12) and the first abutment portion (141), and the second abutment portion (142) is located at the other end of the first groove section (12).

10. The valve core assembly (10) of the electric valve (100) according to any one of claims 1 to 9, characterized in that: The abutment portion (14) comprises a first abutment portion (141) arranged at the first end of the spiral limiting groove (11) and a second abutment portion (142) arranged at the second end of the spiral limiting groove (11); the spiral limiting groove (11) comprises two second groove sections (13); one of the two second groove sections (13) is located between the first abutment portion (141) and the first end of the first groove section (12); the other of the two second groove sections (13) is located between the second abutment portion (142) and the second end of the first groove section (12).

11. The valve core assembly (10) of the electric valve (100) according to any one of claims 1 to 10, characterized in that: The difference between the groove width of the second groove section (13) and the thickness of the portion of the anti-rotation member (2) located in the second groove section (13) is less than or equal to 0.1 mm.

12. An electric valve (100), characterized in that: A valve core assembly (10) comprising a valve stem (3), a driving member (4) and an electric valve (100) according to any one of claims 1 to 11, wherein the valve stem (3) passes through a valve core body (1) of the valve core assembly (10), the driving member (4) is connected to the valve stem (3) and is used to drive the valve stem (3) to move, and the stop member (2) is connected to the driving member (4).

13. The electric valve (100) according to claim 12, characterized in that: The driving member (4) comprises a magnetic rotor (41), wherein the magnetic rotor (41) is sleeved on the outside of the valve core body (1) and is rotatable relative to the valve core body (1); A protrusion (411) is formed on the inner top wall or the inner side wall of the magnetic rotor (41), and the protrusion (411) is connected to the stop member (2) to drive the stop member (2) to move in the spiral limiting groove (11).

14. A thermal management system, characterized in that: Comprising the electric valve (100) according to claim 12 or 13.

15. A vehicle, characterized in that: Includes the thermal management system of claim 14.

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