Electric valve

Abstract

Provided is an electric valve (100). The electric valve (100) comprises: a coil assembly (2), wherein the coil assembly (2) comprises a housing portion (21), the housing portion (21) comprises a snap-fit recess portion (211), and the snap-fit recess portion (211) has a snap-fit recess (211a); a connector (3), which comprises a snap-fit portion (31) and a fixing portion (32), wherein the snap-fit portion (31) is snapped into the snap-fit recess (211a) in a direction perpendicular to the axial direction of the electric valve (100); and a fastening component (5), which uses the fixing portion (32) to fix the connector (3) to a valve body (4) in a snapping direction perpendicular to the snap-fit portion (31). The simplification of the connection between the connector (3) and the coil assembly (2) is facilitated.

Description

An electric valve

[0001] This application claims priority to Chinese Patent Application No. 202411216157.8, filed on August 30, 2024, entitled "An Electric Valve", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of fluid control technology, specifically to an electric valve. Background Technology

[0003] In related technologies, electric valves include coil assemblies, connectors, and valve bodies. The coil assembly is connected to the valve body via the connector, which has a through hole. The coil body has a plastic shell, and the plastic shell has a limiting post that passes through the through hole of the connector. The limiting post is ultrasonically riveted to form an enlarged diameter rivet joint at one end that passes through the through hole, thereby fixing the connector to the coil assembly. With this configuration, the connection process between the coil assembly and the connector is relatively complex. Summary of the Invention

[0004] The purpose of this application is to provide an electric valve that simplifies the connection between the connector and the coil assembly.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] An electric valve, characterized in that the electric valve includes a coil assembly, a connector, a valve body, and a fastening component; the coil assembly includes a housing portion, the housing portion including a slot portion having a slot located on the outer periphery of the housing portion; the connector includes a snap-fit ​​portion and a fixing portion; the snap-fit ​​portion snaps into the slot, the snap-fit ​​direction of the snap-fit ​​portion being perpendicular to the axial direction of the electric valve; the fastening component fixes the connector to the valve body along a fixing direction, the fixing direction being perpendicular to the snap-fit ​​direction of the snap-fit ​​portion.

[0007] In one technical solution provided in this application, the electric valve includes a coil assembly, the coil assembly includes a housing portion, the housing portion includes a slot portion, the slot portion has a slot, the connector includes a snap-fit ​​portion and a fixing portion, the snap-fit ​​portion snaps into the slot in a direction perpendicular to the axial direction of the electric valve, and the fastening component fixes the connector to the valve body in a snap-fit ​​direction perpendicular to the snap-fit ​​portion. This arrangement helps to simplify the connection between the connector and the coil assembly. Attached Figure Description

[0008] Figure 1 is a front view of the structure of the first embodiment of the electric valve provided in this application;

[0009] Figure 2 is a three-dimensional structural diagram of the electric valve shown in Figure 1;

[0010] Figure 3 is a cross-sectional view of the electric valve along plane AA in Figure 1;

[0011] Figure 4 is a three-dimensional structural diagram of the connector of the electric valve shown in Figure 3.

[0012] Figure 5 is a cross-sectional view along plane AA of another embodiment of the electric valve shown in Figure 1.

[0013] Figure 6 is a three-dimensional structural diagram of the connector of the electric valve shown in Figure 5.

[0014] Figure 7 is a three-dimensional structural schematic diagram of another embodiment of the connector of the electric valve shown in Figure 1;

[0015] Figure 8 is a three-dimensional structural schematic diagram of a second embodiment of the connector of the electric valve shown in Figure 1;

[0016] Figure 9 is a three-dimensional structural schematic diagram of the coil assembly of the electric valve shown in Figure 1;

[0017] Figure 10 is a partial cross-sectional schematic view of the coil assembly of the electric valve shown in Figure 9;

[0018] Figure 11 is a three-dimensional structural schematic diagram of the second embodiment of the electric valve provided in this application, omitting the valve body and fastening components;

[0019] Figure 12 is a three-dimensional structural schematic diagram of a second embodiment of the electric valve provided in this application;

[0020] Figure 13 is a cross-sectional view of the electric valve shown in Figure 12 from one perspective;

[0021] Figure 14 is a three-dimensional structural schematic diagram of the connector of the electric valve shown in Figure 13;

[0022] Figure 15 is a three-dimensional structural schematic diagram of another embodiment of the connector of the electric valve shown in Figure 13;

[0023] Figure 16 is a cross-sectional view of a third embodiment of the electric valve provided in this application.

[0024] Figure 17 is a three-dimensional structural diagram of the combined structure of the coil assembly and connecting plate of the electric valve shown in Figure 16.

[0025] Figure 18 is a three-dimensional structural schematic diagram of the coil assembly of the electric valve shown in Figure 16;

[0026] Figure 19 is a three-dimensional structural diagram of the connector of the electric valve shown in Figure 16. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of the invention. However, those skilled in the art should understand that the specific components, devices, and features illustrated in the drawings and described herein are merely exemplary and should not be considered limiting.

[0028] The electric valve 100 can be used in automotive, residential or commercial air conditioning systems, as well as battery cooling systems in automotive and other fields, and other systems that require thermal management. It can regulate the refrigerant flow in the system and can also function as a switching valve.

[0029] Referring to Figures 1-3, in a first embodiment of the electric valve 100 provided in this application, the electric valve 100 includes a valve component 1, a coil assembly 2, and a valve body 4. The coil assembly 2 is located on the outer periphery of the valve component 1. In this embodiment, the valve body 4 is a separate valve block. Of course, in other embodiments, it can also be part of other components, such as a heat exchanger in a cooling system or a flow channel plate formed in an integrated assembly. Valve component 1 includes a rotor assembly 11, a valve seat assembly 12, a valve core assembly 13, a rod assembly 15, and a sleeve 16. Coil assembly 2 includes a stator assembly 22, which is located on the outer periphery of the sleeve 16. The rotor assembly 11 is located in the inner cavity formed by the sleeve 16. The stator assembly 22 drives the rotor assembly 11 to rotate. The rotor assembly 11 is fixedly connected to the rod assembly 15, and the connection method includes welding, snap-fit, etc. A portion of the valve core assembly 13 is located in the inner cavity formed by the valve seat assembly 12. The valve core assembly 13 is connected to the rod assembly 15. The rod assembly 15 can drive the valve core assembly 13 to move up and down along the axial direction of the valve component 1. The valve seat assembly 12 also includes a valve port 122. The valve core assembly 13 can cooperate with the valve port 122 to adjust the flow area of ​​the valve port 122, thereby adjusting the flow rate of the refrigerant through the valve port 122. The valve component 1 also includes a nut assembly 14, which includes a main body 141 and a connecting plate 142. The connecting plate 141 is made of a metal material, such as stainless steel, and the main body 141 is made of a plastic material, such as polyetheretherketone (PEEK) or polyphenylene sulfide (PPS). The nut assembly 14 is formed by injection molding with the connecting plate 142 as an insert.

[0030] Referring to Figures 1-10, in this embodiment, the electric valve 100 further includes a connector 3 and a fastening component 5. The connector 3 includes a snap-fit ​​portion 31 and a fixing portion 32. The coil assembly 2 includes a housing portion 21 made of resin material. The housing portion 21 includes a slot portion 211 with a slot 211a located on the outer periphery of the housing portion 21. The snap-fit ​​portion 31 snaps into the slot 211a. The snap-fit ​​direction of the snap-fit ​​portion 31 is perpendicular to the axial direction of the electric valve 100, specifically referring to the direction of the arrow shown in Figure 2. The fastening component 5 fixes the connector 3 to the valve body 4 along the snap-fit ​​direction perpendicular to the snap-fit ​​portion 31. Here, perpendicular includes approximately perpendicular. This arrangement facilitates the connection between the connector 3 and the coil assembly 2, and also facilitates the connection between the connector 3 and the valve body 4, thereby simplifying the connection between the coil assembly 2 and the valve body 4, simplifying the processing flow, reducing production time and production costs, and also facilitating the overall disassembly of the electric valve 100. In this embodiment, the connector 3 is made of a metal material, such as stainless steel. In other embodiments, the connector 3 may also be made of plastic or the like.

[0031] Referring to Figures 3-10, in this embodiment, the slot portion 211 is recessed inward along the radial direction of the valve component 1 relative to the outer peripheral surface of the outer shell portion 21. The slot portion 211 can be integrally injection molded with the coil assembly 2, or the slot portion 211 can be formed by machining. The slot portion 211 includes a mating portion 2111, which is located on the inner peripheral wall of the slot portion 211. The mating portion 2111 includes at least two mutually parallel mating surfaces 2111a. In this embodiment, the mating portion 2111 is hexagonal or approximately hexagonal as shown in Figure 10. In other embodiments, the mating portion 2111 can also be U-shaped, square, or other feasible shapes. The snap-fit ​​portion 31 includes a snap-fit ​​body 311 and a notch 312. The snap-fit ​​body 311 is generally rectangular. The inner wall of the notch 312 can abut against the slot 211. In other embodiments, the inner wall of the notch 312 can also be clearance-fitted with the slot 211. The snap-fit ​​portion 31 includes at least two mutually parallel snap-fit ​​surfaces 31b, which are located on the inner peripheral wall of the notch 312. Specifically, in this embodiment, the snap-fit ​​portion includes four snap-fit ​​surfaces 31b, two of which are parallel to each other. The coil assembly 2 includes a connector 23, which can be connected to an external connector. The arrangement of multiple pairs of mutually parallel mating surfaces 31b allows for flexible configuration based on the direction of the external connector. The direction of the plug 23, the mutually parallel snap-fit ​​surfaces 31b abut against the two mutually parallel mating surfaces 2111a in the above-mentioned mating part 2111. Of course, in other embodiments, a gap fit can also be used. The remaining two snap-fit ​​surfaces 31b can further prevent circumferential rotation. The notch can also be U-shaped, square or other shapes. The snap-fit ​​surfaces 31b abut against the mating surfaces 2111a. Of course, in other embodiments, the snap-fit ​​surfaces 31b and the mating surfaces 2111a can also be gap fit. At least part of the lower end of the snap-fit ​​part 31 abuts against the bottom wall of the slot part 211, thereby restricting the connector 3 from disengaging from the slot part 211. At the same time, it can reduce the occurrence of circumferential rotation of the electric valve 100, thereby improving the reliability of the structure.

[0032] Referring to Figures 2-10, in this embodiment, the fixing part 32 has a through hole 32a, and the valve body 4 has a threaded hole 4a. The through hole 32a and the threaded hole 4a are aligned. Specifically, in this embodiment, the fixing part 32 is located on the side of the valve body 4, and the threaded hole 4a is located on the side of the valve body 4. The fastening component 5 passes through the through hole 32a and is threadedly connected to the threaded hole 4a of the valve body 4 to fix the connecting member 3 to the valve body 4. The fastening component 5 includes fastening devices such as screws and sleeves with external threads. With this arrangement, the fixing part 32 is located between the fastening component 5 and the side of the valve body 4, which can reduce the circumferential rotation between the combined structure of the coil assembly 2 and the connecting member 3 and the valve body 4. In the first embodiment of this example, referring to Figures 3, 4, and 9, the fixing part 32 is integrally bent relative to the snap-fit ​​part 31, and the number of fixing parts 32 is one. In other embodiments, the number of fixing parts 32 can be two or more. The snap-fit ​​part 31 further includes a protrusion 23a, and a groove 23b is provided at the bottom of the outer shell part 21. In other embodiments, the snap-fit ​​part 31 may have a groove 23b, and the bottom of the outer shell part 21 may have a protrusion 23a. The number of protrusions 23a and grooves 23b are consistent. In this embodiment, the number of protrusions 23a and grooves 23b is one. The protrusion 23a is clearance-fitted with the wall forming the groove 23b. In other embodiments, the protrusion 23a and the wall forming the groove 23b may also be interference-fitted or transition-fitted. Such a configuration can further reduce the occurrence of circumferential rotation of the electric valve 100, thereby further improving the reliability of the coil assembly 2 fixation.

[0033] In the second embodiment of this example, there is no independent drawing. The solution of this embodiment can be understood by referring to Figures 1-3. The fixing part 32 is located on the upper side of the valve body 4, and the threaded hole 4a is located on the upper end face of the valve body 4. The fastening part 5 passes through the through hole 32a and is threadedly connected to the threaded hole 4a of the valve body 4 to fix the connecting part 3 to the valve body 4. The fixing direction of the fastening part 5 is the axial direction of the electric valve 100. By fixing the fastening part 5, the axial movement between the combined structure of the coil assembly 2 and the connecting part 3 and the valve body 4 can be reduced. At the same time, the processing steps can be reduced and the processing time can be saved. Referring to Figure 8, in this embodiment, the fixing part 32 and the snap-fit ​​part 31 are arranged in parallel. Of course, in other embodiments, the fixing part 32 and the snap-fit ​​part 31 can be on the same plane. The fixing part 32 and the snap-fit ​​part 31 are integrally formed and connected by a bending transition part. There is one fixing part 32. The snap-fit ​​part 31 has two protrusions 23a. The axial height of the snap-fit ​​part 31 is greater than the axial height of the fixing part 32. This arrangement can ensure that the lower end face of the coil assembly 2 abuts against or is higher than the upper end face of the valve body 4, and can realize the quick installation of the coil assembly 2.

[0034] In another embodiment of this invention, referring to Figures 5-7, the fixing part 32 includes a first fixing part 321 and a second fixing part 322, which are located on opposite sides of the valve body 4. The snap-fit ​​part 31 has two grooves 23b, and there are two through holes 32 and two threaded holes 4a. The fastening components 5 are fixed on both sides of the valve body 4, which can reduce the possibility of the connector 3 being misaligned or even deformed under force. At the same time, this helps to balance the fastening force on the connector 3 and improve the reliability of the structure. In another embodiment of the connector, referring to Figure 7, the first fixing part 321 and the second fixing part 322 can be located on the same side of the valve body 4. The first fixing part 321 and the second fixing part 322 are spaced apart to balance the fastening force of the fastening components 5, and at the same time, it can save materials and reduce costs.

[0035] In the second embodiment of this application, referring to Figures 10-15, the valve component 1 includes a flange portion 17, which is part of the connecting plate 142 of the nut assembly 14. The nut assembly 14 is fixedly connected to the valve seat assembly 12 via the connecting plate 142. The flange portion 17 includes a first retaining groove portion 1421, which has a downward and outward opening. The first retaining groove portion 1421 is located at the lower end of the connecting plate 142 or the valve seat assembly 12. The first retaining groove portion 1421 can engage with... The coil assembly 2 is integrally injection molded, or the first slot portion 1421 can be formed by machining; the connecting part 3 includes a transition plate 34, which connects the snap-fit ​​portion 31 and the first snap-fit ​​portion 33 respectively. The snap-fit ​​portion 31, the first snap-fit ​​portion 33 and the transition plate 34 are integrally formed. The first snap-fit ​​portion 33 is recessed inward along the radial direction of the valve component 1 relative to the outer peripheral surface of the connecting plate 142. The first snap-fit ​​portion 33 is snapped into the first slot portion 1421 in a direction perpendicular to the axial direction of the valve component 1. In this embodiment, the snap-fit ​​portion 31 and the first snap-fit ​​portion 33 are arranged in parallel, which includes being approximately parallel. The first snap-fit ​​portion 33 includes a first snap-fit ​​body 331 and a first notch portion 332. The inner wall of the first notch portion 332 can abut against the first slot portion 1421. In other embodiments, the inner wall of the first notch portion 332 can also be in clearance fit with the first slot portion 1421. The first snap-fit ​​portion 33 includes at least two mutually parallel first snap-fit ​​surfaces 33a, which are located on the inner peripheral wall of the first notch portion 332. The shape of the first notch portion 332 is as follows: In other embodiments, the first notch 332 may be a square or a hexagon with at least four consecutive sides. The first slot 1421 includes a first mating part 1421a, which is located on the inner peripheral wall of the first slot 1421. The first mating part 1421a includes at least two parallel first mating surfaces 1421a1. In this embodiment, the first mating part 1421a is hexagonal or approximately hexagonal. In other embodiments, the first mating part 1421a may also be U-shaped, square, or other feasible shapes. The first mating surface 1421a1 abuts against the first snap-fit ​​surface 33a. Of course, in other embodiments, the first mating surface 1421a1 can be clearance-fitted with the first snap-fit ​​surface 33a. This setting can further reduce the circumferential rotation of the electric valve 100. At least part of the upper end of the first snap-fit ​​portion 33 abuts against the axial end face of the first snap-fit ​​portion 1421, the lower end of the outer shell portion 21 abuts against the upper end face of the flange portion 17, and at least part of the lower end of the first snap-fit ​​portion 33 abuts against the upper end face of the valve body 4. This setting allows part of the first snap-fit ​​portion 33 to be pressed between the connecting plate 142 and the valve body 4, which can reduce the axial movement of the coil assembly 2. At the same time, it can facilitate the cooperation between the connecting piece 3 and the valve component 1, thereby realizing the rapid assembly of the electric valve 100.In other embodiments, the flange portion 17 may also be located on the valve seat assembly 12. The flange portion 17 is provided to protrude outward along the radial direction of the valve seat assembly 12. The first snap-fit ​​portion 33 is provided to be recessed inward along the radial direction of the valve component 1 relative to the outer peripheral surface of the flange portion 17. At least part of the upper end of the first snap-fit ​​portion 33 abuts against the axial end face of the first slot portion 1421. Part of the first snap-fit ​​portion 33 is located between the lower end of the flange portion 17 and the valve body 4, which can axially limit the connector 3, thereby reducing the axial wobbling of the coil assembly 2.

[0036] Referring to Figures 13-15, in this embodiment, there are two fixing parts 32. The first fixing part 321 and the second fixing part 322 are located on opposite sides of the first snap-fit ​​part 33. The fixing part 32 and the first snap-fit ​​part 33 are on the same plane. In other embodiments, the fixing part 32 and the first snap-fit ​​part 33 can be arranged in parallel. The fixing part 32 is located on the upper side of the valve body 4, and the threaded hole 4a is located on the upper end face of the valve body 4. The fastening part 5 passes through the through hole 32a and is threadedly connected to the threaded hole 4a of the valve body 4 to fix the connector 3 to the valve body 4. The fixing direction of the fastening part 5 is the axial direction of the electric valve 100. By fixing the fastening part 5, the axial movement between the combined structure of the coil assembly 2 and the connector 3 and the valve body 4 can be reduced. In another embodiment of the connector 3, referring to FIG15, the first fixing part 321 and the second fixing part 322 are located on opposite sides of the valve body 4 of the first snap-fit ​​part 33. The fixing part 32 and the first snap-fit ​​part 33 are integrally bent and formed. The fixing of the fastening member 5 makes the connector 3 abut against the side of the valve body 4, which can reduce the relative rotation between the coil assembly 2 and the valve body 4. In other embodiments, the fixing part 32 can be located on the same side of the first snap-fit ​​part 33, separating the two sides to ensure that the fastening member 5 is subjected to balanced force.

[0037] In this embodiment, referring to Figures 11-12, during the installation of the electric valve 100, the valve component 1 and the coil assembly 2 can be pre-connected and fixed in the direction of the arrow shown in Figure 11 by the connector 3, ensuring that the lower end face of the connector 3 abuts against the upper end face of the valve body 4. The integrated structure of the coil assembly 2 and the connector 3 is then fixed to the valve body 4 by the fastening component 5, thereby confining the coil assembly 2 within the valve body 4. This further simplifies the assembly structure and assembly process of the electric valve 100, and also facilitates disassembly. Of course, in other embodiments, the first snap-fit ​​part 33 can be welded and fixed to the connecting plate 142 or the valve seat part 121, and the coil assembly 2 and the valve component 1 can be installed and fixed to the valve body 4 as a whole.

[0038] Referring to Figures 16-19, in the third embodiment of this application, the latching portion 31 includes a first plate portion 311 and a bent plate portion 312. The first plate portion 311 is horizontally disposed, and the bent plate portion 312 is bent relative to the first plate portion 311 in an axial direction. Here, axial direction also includes approximately axial direction. In this embodiment, the bent plate portion 312 is bent upward relative to the first plate portion 311 in an axial direction. In other embodiments, the bent plate portion 312 may also be bent downward. The latching groove 211a includes a first latching groove 211a1 and a second latching groove 211a. 2. The first plate portion 311 is located in the first slot 211a1, and the bent plate portion 312 is located in the second slot 211a2. The lower end of the first plate portion 311 abuts against the bottom wall forming the first slot 211a1, which can exert a downward clamping force on the coil assembly 2 and prevent the coil assembly 2 from being dislodged from the valve body 4 by an upward force. The bent plate portion 312 abuts against or is clearance-fitted with the outer wall forming the second slot 211a2. This arrangement can prevent the coil assembly 2 from dislodging in a direction perpendicular to the radial direction of the valve component 1 and improve the reliability of the structure. In this embodiment, the slot 211a further includes a third slot 211a3. The first slot 211a1, the second slot 211a2, and the third slot 211a3 form a first opening 211a4 in the snap-in direction of the connector 3. The first opening 211a4 faces the snap-in direction of the snap-fit ​​part 31, specifically as shown by the arrow in Figure 17. The snap-fit ​​part 31 includes a second plate part 313, which is parallel to the first plate part 311. Here, parallelism includes being approximately parallel. Of course, in other embodiments, the second plate part 313 may be inclined at a certain angle relative to the first plate part 311. The second plate part 313 is located in the third slot 211a3, and the lower end surface of the second plate part 313 forms the third slot 211a3. The lower end face of the slot 211a3 abuts against the third slot 211a3. In other embodiments, the lower end face of the second plate 313 is in clearance fit with the lower end face of the third slot 211a3. This arrangement ensures the stability of the coil assembly 2 and the connector 3, and further restricts the coil assembly 2 in the axial direction, ensuring reliable fixation of the coil assembly 2. The outer side of the second plate 313 abuts against the outer side of the third slot 211a3. In other embodiments, the outer side of the second plate 313 is in clearance fit with the outer side of the third slot 211a3. This arrangement reduces the shaking of the connector 3 in the direction perpendicular to the radial direction of the valve component 1.The slot portion 211 also includes a closing portion 2112. The closing portion 2112 and the first opening 211a4 are arranged opposite to each other in the direction in which the locking portion 31 is engaged. The second opening 211a5 opens outward in a direction perpendicular to the radial direction of the valve component 1. The locking portion 31 can abut against the closing portion 2112 in the engagement direction. At this time, the end face of the locking portion 31 near the closing portion 2112 and the end face of the closing portion 2112 near the locking portion 31 are both flat. The outer peripheral wall of the bent plate portion 312 abuts against or is clearance-fitted with the inner peripheral wall forming the second slot 211a2. This arrangement can limit the displacement of the connector 3 and the circumferential displacement of the coil assembly 2. It can also facilitate the installation and disassembly of the coil assembly 2 and the connector 3.

[0039] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although this specification has described the present invention in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present invention. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. An electric valve, characterized in that, The electric valve includes a coil assembly (2), a connector (3), a valve body (4), and a fastening component (5). The coil assembly (2) includes a housing portion (21), which includes a slot portion (211) with a slot (211a) located on the outer periphery of the housing portion (21). The connector (3) includes a snap-fit ​​portion (31) and a fixing portion (32). The snap-fit ​​portion (31) snaps into the slot (211a), and the snap-fit ​​direction of the snap-fit ​​portion (31) is perpendicular to the axial direction of the electric valve. The fastening component (5) fixes the connector (3) to the valve body (4) along the fixing direction of the fixing portion (32), and the fixing direction is perpendicular to the snap-fit ​​direction of the snap-fit ​​portion (31).

2. The electric valve according to claim 1, characterized in that, The fixing part (32) has a through hole (32a), the valve body (4) has a threaded hole (4a), the fixing part (32) is located on the side of the valve body (4), the threaded hole (4a) is located on the side of the valve body (4), the fastening member (5) passes through the through hole (32a) and is threadedly connected to the threaded hole (4a) of the valve body (4) to fix the connector (3) to the valve body (4); or, the fixing part (32) is located on the upper side of the valve body (4), the threaded hole (4a) is located on the upper end face of the valve body (4), the fastening member (5) passes through the through hole (32a) and is threadedly connected to the threaded hole (4a) of the valve body (4) to fix the connector (3) to the valve body (4).

3. The electric valve according to any one of claims 1-2, characterized in that, The slot portion (211) is recessed inward along the radial direction of the electric valve relative to the outer peripheral surface of the outer shell portion (21). The slot portion (211) includes a mating portion (2111), which is located on the inner peripheral wall of the slot portion (211). The mating portion (2111) includes at least two mutually parallel mating surfaces (2111a). The snap-fit ​​portion (31) includes at least two mutually parallel snap-fit ​​surfaces (31b). The snap-fit ​​surfaces (31b) abut against or have clearance fit with the mating surfaces (2111a). At least a portion of the lower end of the snap-fit ​​portion (31) abuts against the bottom wall of the slot portion (211).

4. The electric valve according to claim 3, characterized in that, The snap-fit ​​portion (31) has a protrusion (23a), and the bottom of the outer shell portion (21) is provided with a groove (23b); or, the snap-fit ​​portion (31) has a groove (23b), and the bottom of the outer shell portion (21) is provided with a protrusion (23a), and the protrusion (23a) is in interference fit, transition fit, or clearance fit with the wall forming the groove (23b).

5. The electric valve according to any one of claims 2-4, characterized in that, The fixing part (32) is integrally bent relative to the snap-fit ​​part (31). The fixing part (32) includes a first fixing part (321) and a second fixing part (322). The first fixing part (321) and the second fixing part (322) are located on the same side of the valve body (4), or the first fixing part (321) and the second fixing part (322) are located on opposite sides of the valve body (4).

6. The electric valve according to any one of claims 2-4, characterized in that, The fixing part (32) and the snap-fit ​​part (31) are on the same plane, or the fixing part (32) and the snap-fit ​​part (31) are arranged in parallel. The fixing part (32) and the snap-fit ​​part (31) are integrally formed and connected by a bending transition part. The axial height of the snap-fit ​​part (31) is greater than the axial height of the fixing part (32). The fixing part (32) includes a first fixing part (321) and a second fixing part (322). The first fixing part (321) and the second fixing part (322) are located on opposite sides of the snap-fit ​​part (31), or the first fixing part (321) and the second fixing part (322) are located on the same side of the snap-fit ​​part (31).

7. The electric valve according to claim 3 or 4, characterized in that, The electric valve includes a valve component (1), the valve component (1) has a flange portion (17), the flange portion (17) includes a first slot portion (1421), the connector (3) also includes a first snap-fit ​​portion (33) and a transition plate (34), the transition plate (34) connects the snap-fit ​​portion (31) and the first snap-fit ​​portion (33), the snap-fit ​​portion (31), the first snap-fit ​​portion (33) and the transition plate (34) are integrally formed, the first snap-fit ​​portion (33) snaps into the first slot portion (1421), and the snap-fit ​​direction of the first snap-fit ​​portion (33) is perpendicular to the axial direction of the electric valve.

8. The electric valve according to claim 7, characterized in that, The first slot portion (1421) is recessed inward along the radial direction of the electric valve relative to the outer peripheral surface of the flange portion (17). The first slot portion (1421) has a downward and outward opening. The first slot portion (1421) includes a first mating portion (1421a), which is located on the inner peripheral wall of the first slot portion (1421). The first mating portion (1421a) includes at least two mutually parallel first mating surfaces (1421a1). The first snap-fit ​​portion (33) is arranged parallel to the snap-fit ​​portion (31). The first snap-fit ​​portion (33) includes at least two mutually parallel first snap-fit ​​surfaces (33a). The first mating surface (1421a1) abuts or gaps with the first snap-fit ​​surface (33a). At least part of the upper end of the first snap-fit ​​portion (33) abuts with the axial end face of the first slot portion (1421). The lower end of the outer shell portion (21) abuts with the upper end face of the flange portion (17).

9. The electric valve according to claim 7 or 8, characterized in that, The electric valve includes a nut assembly (14) and a valve seat assembly (12). The nut assembly (14) includes a connecting plate (142). The nut assembly (14) is fixedly connected to the valve seat assembly (12) through the connecting plate (142). The flange portion (17) is a part of the connecting plate (142), or the flange portion (17) is a part of the valve seat assembly (12). The flange portion (17) is arranged to protrude outward along the radial direction of the valve seat assembly (12).

10. The electric valve according to claim 9, characterized in that, The fixing part (32) is integrally bent relative to the first snap-fit ​​part (33), or the fixing part (32) and the first snap-fit ​​part (33) are on the same plane, or the fixing part (32) and the first snap-fit ​​part (33) are arranged parallel to each other. The fixing part (32) and the first snap-fit ​​part (33) are integrally formed and connected by a bending transition part. The axial height of the first snap-fit ​​part (33) is greater than the axial height of the fixing part (32). The fixing part (32) includes a first fixing part (321) and a second fixing part (322). The first fixing part (321) and the second fixing part (322) are located on the same side of the first snap-fit ​​part (33), or the first fixing part (321) and the second fixing part (322) are located on opposite sides of the first snap-fit ​​part (33).

11. The electric valve according to claims 1-2, characterized in that, The latching part (31) includes a first plate part (311) and a bent plate part (312). The first plate part (311) is horizontally arranged, and the bent plate part (312) is bent in the axial direction relative to the first plate part (311). The latching groove (211a) includes a first latching groove (211a1) and a second latching groove (211a2). The first plate part (311) is located in the first latching groove (211a1), and the bent plate part (312) is located in the second latching groove (211a2). The lower end of the first plate part (311) abuts against the bottom wall forming the first latching groove (211a1), and the bent plate part (312) abuts against or gap-fits against the outer wall forming the second latching groove (211a2).

12. The electric valve according to claim 11, wherein the slot (211a) includes a third slot (211a3), the engaging portion (31) includes a second plate portion (313), the second plate portion (313) is arranged parallel to the first plate portion (311), the second plate portion (313) is located in the third slot (211a3), the lower end face of the second plate portion (313) abuts or is clearance-fitted with the lower end face of the third slot (211a3), and the outer side face of the second plate portion (313) abuts or is clearance-fitted with the outer side face of the third slot (211a3).

13. The electric valve according to claim 11 or 12, characterized in that, The slot (211a) includes a first opening (211a4) and a second opening (211a5). The first opening (211a4) faces the snap-in direction of the snap-in part (31). The slot part (211) also includes a closing part (2112). The closing part (2112) and the first opening (211a4) are arranged opposite to each other in the snap-in direction of the snap-in part (31). The second opening (211a5) opens outward in a direction perpendicular to the axial direction of the electric valve. The snap-in part (31) can abut or gap fit with the closing part (2112) in the snap-in direction. The outer peripheral wall of the bent plate part (312) abuts or gap fits with the inner peripheral wall forming the second slot (211a2).

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