Electric valve

Abstract

The invention provides an electrically operated valve, and relates to the field of fluid control, the electrically operated valve comprises a driving assembly, the driving assembly comprises a packaging assembly, the packaging assembly comprises a substrate, a packaging layer, a chip and a peripheral device, the chip and the peripheral device are fixedly arranged on the substrate, and the packaging layer packages the chip, the peripheral device and at least part of the substrate; the driving assembly comprises a shell, the shell comprises a limiting groove, and the packaging assembly is arranged in the limiting groove. According to the electric valve, the size of the driving assembly of the electric valve is reduced, so that the shell size of the driving assembly is reduced, the size of the electric valve is further reduced, and the electric valve is easier to arrange.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fluid control, in particular to an electric valve. BACKGROUND

[0002] The driving assembly of the electric valve comprises an electric control device, the electric control device comprises an electric control board, a chip and some peripheral devices such as capacitors and resistors are fixedly arranged on the electric control board, and the electric control board is electrically connected with power supply pins and winding pins. In this kind of driving assembly, the electric control device has a large volume, occupies a large shell space, causes the shell to have a large volume, and then the whole electric valve has a large volume, which is not convenient for arranging the electric valve. SUMMARY

[0003] To solve the above technical problems, the following technical solutions are provided:

[0004] An electric valve, comprising a driving assembly, the driving assembly comprising a packaging assembly, the packaging assembly comprising a substrate, a packaging layer, and a chip and peripheral devices fixedly arranged on the substrate, the packaging layer packaging the chip, the peripheral devices, and at least part of the substrate; the driving assembly comprising a shell, the shell comprising a limiting groove, and the packaging assembly being arranged in the limiting groove.

[0005] The electric valve provided by the present application can at least achieve the following beneficial effects:

[0006] The present application integrates the substrate, the chip and the peripheral devices into a packaging assembly through the packaging layer. Compared with the electric control device in the background art, the packaging assembly has a relatively small volume. In addition, the packaging assembly is arranged in the limiting groove of the shell, which can further reduce the occupied space of the packaging assembly, reduce the volume of the driving assembly, and thus reduce the volume of the shell of the driving assembly, and further reduce the volume of the electric valve, making it easier to arrange the electric valve. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 It is a schematic view of the overall structure of the packaging assembly;

[0008] Figure 2 It is a schematic view of the electric valve;

[0009] Figure 3 It is a schematic view of the electric valve from the top;

[0010] Figure 4 It is a schematic view of the electric valve from the top; Figure 3

[0011] Figure 5 It is a schematic view of the electric valve from the top; Figure 4

[0012] Figure 6 ​​Fig. 1 is a schematic view of a first embodiment of the encapsulation assembly;

[0013] Figure 7 Fig. 2 is a schematic view of the axial extension of the power pin connection and the winding pin connection along the stator assembly;

[0014] Figure 8 Fig. 3 is a schematic view of the encapsulation assembly and the assembly of the structure shown in Fig. 1; Figure 6 Figure 7

[0015] Figure 9 Fig. 4 is a schematic view of a first embodiment of the electric motor valve;

[0016] Figure 10 Fig. 5 is a schematic view of the axial extension of the power pin connection and the winding pin connection along the stator assembly; Figure 9

[0017] Figure 11 Figure 10

[0018] Figure 12 Figure 11

[0019] Figure 13 Fig. 6 is a schematic view of the radial extension of the power pin connection and the winding pin connection along the stator assembly; Figure 10

[0020] Figure 14 Figure 13

[0021] Figure 15 Fig. 7 is a schematic view of a second embodiment of the encapsulation assembly;

[0022] Figure 16 Fig. 8 is a schematic view of the radial extension of the power pin connection and the winding pin connection along the stator assembly;

[0023] Figure 17 Fig. 9 is a schematic view of the axial extension of the power pin connection and the winding pin connection along the stator assembly; Figure 16

[0024] Figure 18 Figure 17

[0025] Figure 19 Fig. 10 is a schematic view of the radial extension of the power pin connection and the winding pin connection along the stator assembly; Figure 16

[0026] Figure 20 Figure 19

[0027] Figure 21 Fig. 11 is a schematic view of the radial extension of the power pin connection and the winding pin connection along the stator assembly; Figure 20 ​​​​​​​​​​​​​​​​​

[0028] Icon: 100 - package assembly; 110 - substrate; 120 - chip; 130 - package layer; 140 - peripheral device; 101 - first mounting surface portion; 102 - second mounting surface portion; 103 - first side wall surface portion; 104 - second side wall surface portion; 1041 - electrical connection portion; 105 - recess; 200 - shell; 210 - limiting groove; 211 - second limiting wall; 220 - sleeve cap; 221 - first limiting wall; 1 - stator assembly; 11 - coil assembly; 12 - coil former; 2 - magnetic rotor; 3 - sleeve; 31 - closed end portion; 32 - open end portion; 4 - power supply pin; 41 - power supply pin connection end; 5 - winding pin; 51 - winding pin connection end; 6 - cover portion; 7 - valve body; 71 - first fluid passage; 72 - second fluid passage; 73 - valve port; 8 - valve seat; 91 - valve core component; 92 - rotor shaft; 93 - nut assembly; 10 - hole portion. DETAILED DESCRIPTION

[0029] To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0030] The technical solutions of the present application will be described in detail below with reference to the drawings:

[0031] The present application provides an electric valve, referring to Figures 1 to 21 The electric valve comprises a valve body 7, a valve assembly, a stator assembly 1, a magnetic rotor 2, a sleeve 3 and a driving assembly. Specifically, the valve assembly is assembled with the valve body 7, the valve body 7 has a first fluid passage 71 and a second fluid passage 72, the first fluid passage 71 and the second fluid passage 72 are communicated through a valve port 73, the valve port 73 can be shaped on the valve body 7 or a valve seat 8 with the valve port 73 is fixed together with the valve body 7; the valve assembly comprises a valve core component 91, a rotor shaft 92 and a nut assembly 93; the stator assembly 1 comprises a coil assembly 11 and a coil former 12, the coil former 12 provides support for the winding of the coil assembly 11, and the coil former 12 is fixedly connected with the valve body 7. The sleeve 3 is sleeved on the outside of the magnetic rotor 2, and one end of the sleeve 3 is fixed together with the valve body 7, and the fixing mode includes but is not limited to welding. The stator assembly 1 comprises a hole portion 10, at least part of the magnetic rotor 2 is located in the hole portion 10, at least part of the sleeve 3 is located in the hole portion 10 and separates the magnetic rotor 2 and the stator assembly 1, that is, the magnetic rotor 2 is arranged inside the sleeve 3, and the stator assembly 1 is arranged outside the sleeve 3.

[0032] The driving assembly comprises a shell 200 and a packaging assembly 100, and specifically, the packaging assembly 100 comprises a substrate 110, a packaging layer 130, and a chip 120 and a peripheral device 140 fixed to the substrate 110, and the packaging layer 130 encapsulates the chip 120, the peripheral device 140 and at least part of the substrate 110. The shell 200 comprises a limiting groove 210, and the packaging assembly 100 is arranged in the limiting groove 210.

[0033] The coil assembly 11 of the stator assembly 1 is electrically connected to the packaging assembly 100 of the driving assembly, a predetermined current is passed through the coil assembly 11 by the packaging assembly 100 of the driving assembly, the stator assembly 1 can generate an excitation magnetic field, the magnetic rotor 2 can rotate in the excitation magnetic field generated by the stator assembly 1, the magnetic rotor 2 drives the rotor shaft 92 to rotate, the rotor shaft 92 is threadedly connected with the nut assembly 93, drives the valve core part 91 to move relatively close to or away from the valve port 73, changes the flow area of the valve port 73, changes the communication area of the first fluid passage 71 and the second fluid passage 72, and further adjusts the flow of the electric valve.

[0034] In the electric valve provided in the application, the driving assembly comprises a packaging assembly 100, the packaging assembly 100 comprises a substrate 110, a packaging layer 130, and a chip 120 and a peripheral device 140 fixed to the substrate 110, and the packaging layer 130 encapsulates the chip 120, the peripheral device 140 and at least part of the substrate 110. Through the packaging layer 130, the substrate 110, the chip 120 and the peripheral device 140 are integrated and encapsulated into the packaging assembly 100. Compared with the electric control device in the background art, the packaging assembly 100 has a relatively small volume, the volume of the driving assembly can be further reduced, the volume of the shell 200 of the driving assembly is reduced, and the volume of the electric valve is reduced, so that the electric valve is more easily arranged.

[0035] In addition, in the electric valve provided in the application, the substrate 110, the chip 120 and the peripheral device 140 are integrated and encapsulated into the packaging assembly 100 by the packaging layer 130, and the following functional effects are achieved:

[0036] (1) The packaging layer 130 protects the substrate 110, the chip 120 and the peripheral device 140 from erosion by dust, moisture and other pollutants, prolongs the service life of the circuit, and can improve the adaptability of the electric valve to harsh environments, such as high temperature, high humidity or chemical corrosion environments;

[0037] (2) The encapsulation helps to maintain the fixation and stability of the chip 120 and the peripheral device 140, reduces electromagnetic problems caused by mechanical vibration and thermal expansion, and helps to improve the electromagnetic compatibility of the electric valve and reduce the emission and sensitivity of electromagnetic interference;

[0038] (3) The packaging structure can provide better physical support for the chip 120 and its peripheral devices 140, reducing the impact of vibration and impact on them;

[0039] (4) It is convenient to centrally manage and control, simplifies wiring and maintenance work, and the packaging assembly 100 as a whole unit is convenient for standardized production and rapid replacement, and it is more convenient to upgrade or maintain the electric valve;

[0040] (5) The packaging can prevent users from contacting live parts or sensitive electronic components, improving safety.

[0041] By setting the shell 200, and installing the packaging assembly 100 in the limiting groove 210 of the shell 200, the following functional effects can be achieved:

[0042] (1) The shell 200 reduces the corrosion of the packaging assembly 100 by the outside world;

[0043] (2) The limiting groove 210 provides a precise positioning reference for the packaging assembly 100, ensuring that the packaging assembly 100 is correctly aligned and fixed inside the shell 200;

[0044] (3) When the electric valve is disassembled or the electric valve is working, the limiting groove 210 can prevent the packaging assembly 100 from shaking, thereby protecting the packaging assembly 100 from damage caused by vibration;

[0045] (4) The limiting groove 210 simplifies the assembly process of the packaging assembly 100, making it more convenient to install, adjust and maintain the electric valve.

[0046] Further, the electric valve provided by the application comprises a stator assembly 1, a magnetic rotor 2 and a sleeve 3; the stator assembly 1 comprises a hole portion 10, at least part of the magnetic rotor 2 is located in the hole portion 10, the sleeve 3 is sleeved on the outside of the magnetic rotor 2, and at least part of the sleeve 3 is located in the hole portion 10. The shell 200 comprises a sleeve cap 220, which is an integral injection molding structure with the shell 200. Among them, along the axis direction of the stator assembly 1, the sleeve 3 has an open end portion 32 and a closed end portion 31, the open end portion 32 of which is located in the hole portion 10 of the stator assembly 1 and fixed to the valve body 7, and the closed end portion 31 of which protrudes from the end portion of the stator assembly 1, the sleeve cap 220 is sleeved on the closed end portion 31 of the sleeve 3, the limiting groove 210 is arranged on one side of the sleeve cap 220 in the radial direction, the packaging assembly 100 is limitedly arranged in the limiting groove 210, and the thickness extension direction of the packaging assembly 100 is perpendicular to the axis direction of the stator assembly 1.

[0047] When the packaging assembly 100 is installed into the shell 200, the packaging assembly 100 can be guided along the limiting groove 210 to slide into the inside of the limiting groove 210. The opening direction of the limiting groove 210 relative to the axial direction of the stator assembly 1 is reasonably set to realize quick plug-in installation. The specific plug-in installation mode includes but is not limited to vertical insertion into the limiting groove 210. Since the limiting groove 210 is arranged on one side of the sleeve cap 220 in the radial direction, the thickness extension direction of the packaging assembly 100 is perpendicular to the axial direction of the stator assembly 1. When installing, the packaging assembly 100 is vertically inserted into the limiting groove 210 for limiting setting. Compared with the prior art, the thickness extension direction of the electric control board in the electric control device is perpendicular to the radial direction of the stator assembly 1. The space occupied by the limiting groove 210 in the radial direction of the stator assembly 1 can be reduced, the volume of the drive assembly is further reduced, the overall structure of the electric valve is more compact, the volume is smaller, and the electric valve is more easily installed and arranged.

[0048] In the present application, the limiting groove 210 and the shell 200 are integrally injection molded. In the axial direction of the stator assembly 1, the opening direction of the limiting groove 210 is away from the stator assembly 1. When installing, the packaging assembly 100 is inserted from the opening of the limiting groove 210. The installation is simple, convenient and easy to operate, can realize quick plug-in assembly, and improves the assembly efficiency. For example, the opening of the limiting groove 210 is arranged on the side surface of the shell 200 extending along the radial direction of the stator assembly 1 and away from the stator assembly 1. The packaging assembly 100 is inserted into the limiting groove 210 along the axial direction of the stator assembly 1. The opening is not blocked by other component structures, and is more easily operated.

[0049] In the present application, the limiting groove 210 is part of the shell 200, and can be independently arranged from the sleeve cap 220, or can use one side wall of the sleeve cap 220 as one groove wall surface of the limiting groove 210. If the limiting groove 210 is arranged independently from the sleeve cap 220, the space occupied by the limiting groove 210 is larger, and the structural strength of the limiting groove 210 is weaker. When the packaging assembly 100 is inserted into and pulled out of the limiting groove 210, the limiting groove 210 is easily abraded. In comparison, using one side wall of the sleeve cap 220 as one groove wall surface of the limiting groove 210 is more conducive to saving space, and can also increase the structural strength of the limiting groove 210. Specifically, as shown in Figure 5 The sleeve cap 220 includes a first limiting wall 221, and the shell 200 includes a second limiting wall 211. The first limiting wall 221 and the second limiting wall 211 correspond to two oppositely arranged side walls of the limiting groove 210. In combination with Figures 6 to 14 and Figures 15 to 21The two packaging assemblies 100 are installed in the limiting groove 210, wherein, in the thickness direction of the packaging assembly 100, the packaging assembly 100 comprises a first mounting surface 101 and a second mounting surface 102, at least part of the first mounting surface 101 abuts against the first limiting wall 221, and at least part of the second mounting surface 102 abuts against the second limiting wall 211. Thus, the packaging assembly 100 is limitedly arranged between the first limiting wall 221 and the second limiting wall 211, the influence of vibration generated in the working or transportation process on the packaging assembly 100 is reduced, the stability of the packaging assembly 100 in the limiting groove 210 is further improved, and the risk of loose electrical connection and poor contact of the packaging assembly 100 and the pin is reduced. In this structure, the first limiting wall 221 of the sleeve cap 220 serves as a groove wall surface of the limiting groove 210. Compared with separately opening the limiting groove 210 on the shell 200, this structure can further reduce the volume of the electric valve, and further improve the structural strength of the limiting groove 210, and reduce the problems of damage of the limiting groove 210 and wear of the limiting surface due to multiple insertion and extraction of the packaging assembly 100.

[0050] In the present application, the packaging assembly 100 comprises a first side wall surface 103 and a second side wall surface 104, the first side wall surface 103 and the second side wall surface 104 are parallel to each other, the first side wall surface 103 is away from the stator assembly 1 relative to the second side wall surface 104, and the extension direction of the first side wall surface 103 is perpendicular to the axis of the stator assembly 1; in the axial direction of the stator assembly 1, the first side wall surface 103 is lower than the top of the sleeve 3, or the first side wall surface 103 is flush with the top of the sleeve 3. Relative to the first side wall surface 103 of the packaging assembly 100, the installation is higher than the top of the sleeve 3, this structure can reduce the space occupied by the limiting groove 210 in the axial direction of the stator assembly 1, further reduce the volume of the driving assembly, and make the overall structure of the electric valve more compact, smaller in volume and easier to install and arrange.

[0051] The electric valve provided by the application further comprises a power supply end, the power supply end comprises power supply pins 4, the stator assembly 1 comprises winding pins 5, at least part of the power supply pins 4 and at least part of the winding pins 5 are insert-molded in the shell 200, the packaging assembly 100 is electrically connected with the power supply pins 4, and the packaging assembly 100 is electrically connected with the winding pins 5; the power supply pins 4 comprise power supply pin connecting ends 41, and the winding pins 5 comprise winding pin connecting ends 51; the power supply pin connecting ends 41 and the winding pin connecting ends 51 are protrusively arranged in the limiting groove 210. If the power supply pin connecting ends 41 and the winding pin connecting ends 51 are randomly arranged in the limiting groove 210, when the packaging assembly 100 is inserted into the limiting groove 210, the power supply pin connecting ends 41 and the winding pin connecting ends 51 need to be pulled out of the limiting groove 210 first, then the packaging assembly 100 is connected with the power supply pin connecting ends 41 and the winding pin connecting ends 51 respectively, the connected electric connection wires are loaded into the limiting groove 210 together with the packaging assembly 100, the whole process is complex and inconvenient, and the limiting groove 210 needs to reserve extra space to accommodate the electric connection wires. In comparison, the above structure of the application can realize the following functional effects: (1) the connection process of the packaging assembly 100 with the power supply pins 4 and the packaging assembly 100 with the winding pins 5 is simplified, when the packaging assembly 100 is inserted into the limiting groove 210, the packaging assembly 100 is electrically connected with the power supply pins 4 and the winding pins 5, which is simple and convenient to operate; (2) the limiting groove 210 does not need to reserve space to accommodate the electric connection wires, which can further reduce the volume of the shell 200, thereby further reducing the volume of the electric valve, which is beneficial to the arrangement of the electric valve.

[0052] In the electric valve provided in the application, the power pin connection end 41 and the winding pin connection end 51 both extend along the axial direction of the stator assembly 1, or both extend along the radial direction of the stator assembly 1; the second side wall surface part 104 is provided with a plurality of electrical connection parts 1041, the number of the electrical connection parts 1041 is the sum of the number of the power pin connection end 41 and the number of the winding pin connection end 51, the electrical connection parts 1041 are electrically connected with the power pin connection end 41, or the electrical connection parts 1041 are electrically connected with the winding pin connection end 51. The specific electrical connection mode in operation is generally that part of the electrical connection parts 1041 are electrically connected with the power pin connection end 41, and the other part of the electrical connection parts 1041 are electrically connected with the winding pin connection end 51, thereby providing stable and reliable wiring effect. In the structure, by making the power pin connection end 41 and the winding pin connection end 51 both extend along the axial direction of the stator assembly 1, or both extend along the radial direction of the stator assembly 1, the plug-in direction of all the electrical connection pins is uniformly set, the structure of the electrical connection part 1041 of the packaging assembly 100 can be further regularized, and manufacturing is more convenient. It should be noted that the distance between the adjacent electrical connection parts 1041 of the packaging assembly 100 needs to meet the safety distance of electrical connection, so as to reduce the electromagnetic interference between different electrical connection parts 1041, meet the heat dissipation demand between different electrical connection parts 1041, prevent accidents caused by wrong connection or misoperation between adjacent electrical connection parts 1041, and maintain long-term electrical performance and reliability.

[0053] In the application, in order to further facilitate manufacturing and ensure wiring stability, the second side wall surface part 104 of the packaging assembly 100 is provided with a plurality of recesses 105, the recesses 105 are recessed from the second side wall surface part 104 to the first side wall surface part 103, each recess 105 is provided with the above-mentioned electrical connection part 1041, and the recesses 105 are uniformly distributed on the second side wall surface part 104 of the packaging assembly 100; the opening of each recess 105 faces the stator assembly 1. In the structure, the electrical connection part 1041 is arranged in the recess 105, which can at least achieve the following effects: (1) the recess 105 provides physical protection for the electrical connection part 1041, which can prevent accidental touching, reduce the influence of dust and moisture on the electrical connection part 1041, reduce the corrosion risk of the electrical connection part 1041, and improve the electrical connection safety; (2) the recess 105 provides wiring space, which can not need to additionally reserve wiring space in the limiting groove 210, which is beneficial to further reducing the structure size of the limiting groove 210, and further reducing the volume of the electric valve; (3) the electrical connection part 1041 is located in the recess 105, which is helpful to optimizing the wiring path, reducing cable clutter, and realizing a more tidy layout; (4) the recess 105 can be used as a natural electromagnetic shield, which is helpful to reducing the propagation of electromagnetic interference and improving the anti-electromagnetic interference of electrical connection; (5) the standardized recess 105 design is helpful to automatic production, assembly and interchange of packaging assemblies 100 of different electric valves, and improves the production and assembly efficiency, upgrading and maintenance efficiency.

[0054] In the first alternative embodiment of the present application, as shown in Figures 6 to 14 Fig. 2, along the axial direction of the stator assembly 1, the projection of the recess 105 on the second side wall surface 104 is circular or square, and the shape of the recess 105 corresponds to the shape of the power pin connecting end 41 or the winding pin connecting end 51. In the second alternative embodiment of the present application, as shown in Figures 15 to 21 Fig. 3, along the thickness direction of the packaging assembly 100, the projection of the recess 105 on the first limiting wall 221 is U-shaped, and the recess 105 penetrates through the packaging assembly 100. The above two structures provide two specific setting modes of the recess 105 of the packaging assembly 100, both of which can achieve the functional effects of the recess 105 as described above, and can be selected according to actual conditions.

[0055] In addition, in the present application, the shell 200 further comprises a cover portion 6 which covers the limiting groove 210; the top of the cover portion 6 is lower than the top of the sleeve cap 220, or the top of the cover portion 6 is flush with the top of the sleeve cap 220. In this structure, the packaging assembly 100 installed in the limiting groove 210 can be protected by the cover portion 6, preventing the packaging assembly 100 from being eroded by dust, moisture and other pollutants, prolonging the service life of the circuit, and improving the adaptability of the electric valve to harsh environments, such as high temperature, high humidity or chemical corrosion environment.

[0056] Finally, it should be noted that: the features of the above embodiments and the alternative embodiments in the embodiments can be combined with each other without conflict. In addition, the above embodiments and the alternative embodiments in the embodiments in the present specification are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above alternative embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the present application. In addition, it is emphasized again that: the features of the above embodiments and the alternative embodiments in the embodiments in the present specification can be combined with each other without conflict.

Claims

1. An electrically powered valve characterised in that: The electric valve comprises a driving assembly, the driving assembly comprises a packaging assembly (100), the packaging assembly (100) comprises a substrate (110), a packaging layer (130) and a chip (120) and a peripheral device (140) fixed on the substrate (110), and the packaging layer (130) encapsulates the chip (120), the peripheral device (140) and at least part of the substrate (110); The driving assembly comprises a shell (200), and the shell (200) comprises a limiting groove (210), and the packaging assembly (100) is arranged in the limiting groove (210).

2. The motorized valve of claim 1, wherein, The electric valve comprises a stator assembly (1), a magnetic rotor (2) and a sleeve (3); The stator assembly (1) comprises a hole portion (10), at least part of the magnetic rotor (2) is located in the hole portion (10), the sleeve (3) is sleeved on the outer side of the magnetic rotor (2), and at least part of the sleeve (3) is located in the hole portion (10); The shell (200) comprises a sleeve cap (220), the sleeve cap (220) and the shell (200) are integrally injection molded, the sleeve cap (220) is sleeved on the closed end portion (31) of the sleeve (3), the limiting groove (210) is arranged on one side of the sleeve cap (220) in the radial direction, the packaging assembly (100) is arranged in the limiting groove (210) in a limiting mode, and the thickness extension direction of the packaging assembly (100) is perpendicular to the axis direction of the stator assembly (1).

3. The motorized valve of claim 2, wherein: The shell (200) is injection molded to form the limiting groove (210), and in the axis direction of the stator assembly (1), the opening direction of the limiting groove (210) is away from the stator assembly (1).

4. The motorized valve of claim 3, wherein: The sleeve cap (220) comprises a first limiting wall (221), the shell (200) comprises a second limiting wall (211), the first limiting wall (221) and the second limiting wall (211) correspond to two oppositely arranged side walls of the limiting groove (210); In the thickness direction of the packaging assembly (100), the packaging assembly (100) comprises a first mounting surface portion (101) and a second mounting surface portion (102), at least part of the first mounting surface portion (101) abuts against the first limiting wall (221), and at least part of the second mounting surface portion (102) abuts against the second limiting wall (211).

5. The motorized valve of claim 4, wherein: The packaging assembly (100) comprises a first side wall surface portion (103) and a second side wall surface portion (104), the first side wall surface portion (103) and the second side wall surface portion (104) are parallel to each other, the first side wall surface portion (103) is away from the stator assembly (1) relative to the second side wall surface portion (104), and the extension direction of the first side wall surface portion (103) is perpendicular to the axis of the stator assembly (1); In the axis direction of the stator assembly (1), the first side wall surface portion (103) is lower than the top of the sleeve (3), or the first side wall surface portion (103) is flush with the top of the sleeve (3).

6. The motorized valve of claim 5, wherein: The electric valve further comprises a power supply end, the power supply end comprises a power supply pin (4), the stator assembly (1) comprises a winding pin (5), at least part of the power supply pin (4) and at least part of the winding pin (5) are insert molded in the shell (200), the packaging assembly (100) is electrically connected with the power supply pin (4), and the packaging assembly (100) is electrically connected with the winding pin (5); the power supply pin (4) comprises a power supply pin connecting end (41), and the winding pin (5) comprises a winding pin connecting end (51); the power supply pin connecting end (41) and the winding pin connecting end (51) are protrudingly arranged in the limiting groove (210).

7. The motorized valve of claim 6, wherein: The power supply pin connecting end (41) and the winding pin connecting end (51) both extend along the axial direction of the stator assembly (1), or both extend along the radial direction of the stator assembly (1). The second side wall surface portion (104) is provided with a plurality of electric connection portions (1041), the number of the electric connection portions (1041) is the sum of the number of the power supply pin connecting end (41) and the number of the winding pin connecting end (51), and the electric connection portions (1041) are electrically connected with the power supply pin connecting end (41) or the winding pin connecting end (51).

8. The motorized valve of claim 7, wherein: The second side wall surface portion (104) is provided with a plurality of recesses (105), the recesses (105) are recessed from the second side wall surface portion (104) to the first side wall surface portion (103), the recesses (105) are provided with the electric connection portions (1041), and a plurality of the recesses (105) are uniformly distributed on the second side wall surface portion (104); the openings of the recesses (105) face the stator assembly (1).

9. The electric valve according to claim 8, characterized in that: Along the axial direction of the stator assembly (1), the projection of the recess (105) on the second side wall surface portion (104) is circular or square, and the shape of the recess (105) corresponds to the shape of the power supply pin connecting end (41) or the winding pin connecting end (51); Or, along the thickness direction of the packaging assembly (100), the projection of the recess (105) on the first limiting wall (221) is U-shaped, and the recess (105) penetrates through the packaging assembly (100).

10. The motorized valve of claim 8, wherein: The shell (200) further comprises a cover portion (6), and the cover portion (6) covers the limiting groove (210); the top of the cover portion (6) is lower than the top of the sleeve cap (220), or the top of the cover portion (6) is flush with the top of the sleeve cap (220).

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