stator assembly

Abstract

The application relates to a stator assembly, which comprises a coil assembly, a circuit board assembly, a Hall assembly and a pin assembly, the circuit board assembly is electrically connected with the coil assembly, the Hall assembly and the pin assembly, at least part of the Hall assembly is located on one axial side of the coil assembly, at least part of the pin assembly is located on one axial side of the coil assembly close to the Hall assembly, a first plane is arranged in parallel with the axial direction of the coil assembly, the projection of the Hall assembly on the first plane overlaps the projection of the pin assembly on the first plane, so that the structure of the Hall assembly, the pin assembly and the coil assembly can be more compact, and the size of the stator assembly can be reduced, so as to meet the miniaturization requirement of the stator assembly.

Description

Technical Field

[0001] This application relates to fluid control devices, specifically to a stator assembly. Background Technology

[0002] The stator assembly is an important component of the fluid control device, including the circuit board assembly, coil assembly, Hall element and pin. The circuit board assembly is electrically connected to the coil assembly, Hall element and pin. The circuit structure of the stator assembly is relatively loose, which leads to the problem of the relatively large size of the stator assembly. Utility Model Content

[0003] The purpose of this application is to provide a stator assembly that allows for a more compact structure, thereby reducing the size of the stator assembly.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] A stator assembly includes a coil assembly, a circuit board assembly, a Hall effect sensor assembly, and a pin assembly. The circuit board assembly is electrically connected to the coil assembly, the Hall effect sensor assembly, and the pin assembly. At least a portion of the Hall effect sensor assembly is located on one axial side of the coil assembly, and at least a portion of the pin assembly is located on one axial side of the coil assembly near the Hall effect sensor assembly. A first plane is defined, which is parallel to the axial direction of the coil assembly. The projection of the Hall effect sensor assembly onto the first plane overlaps with the projection of the pin assembly onto the first plane.

[0006] In such a stator assembly, at least some Hall elements are located on one axial side of the coil assembly, and at least some wiring pins are located on the axial side of the coil assembly near the Hall elements. The projection of the Hall elements on the first plane overlaps with the projection of the pin assembly on the first plane, which makes the structure of the Hall elements, pin assemblies and coil assemblies more compact, which is beneficial to reducing the size of the stator assembly to meet the miniaturization requirements of the stator assembly. Attached Figure Description

[0007] Figure 1 A cross-sectional structural schematic diagram of the electric valve provided in the first embodiment of this application;

[0008] Figure 2 for Figure 1 A cross-sectional structural diagram of the middle stator assembly;

[0009] Figure 3 for Figure 1 Another cross-sectional view of the middle stator assembly;

[0010] Figure 4 for Figure 2A three-dimensional structural diagram of the Hall effect sensor and the pin assembly;

[0011] Figure 5 for Figure 4 A three-dimensional structural diagram of the center pin assembly;

[0012] Figure 6 for Figure 5 A three-dimensional structural diagram of the center connector pin;

[0013] Figure 7 for Figure 4 A three-dimensional structural diagram of the cage;

[0014] Figure 8 for Figure 4 A three-dimensional structural diagram of a Hall element;

[0015] Figure 9 for Figure 2 A three-dimensional structural diagram of a circuit board assembly;

[0016] Figure 10 for Figure 2 A three-dimensional structural diagram of the middle stator assembly after removing the cover, Hall effect components, and circuit board assembly;

[0017] Figure 11 A cross-sectional structural schematic diagram of the stator assembly provided in the second embodiment of this application;

[0018] Figure 12 for Figure 11 A three-dimensional structural diagram of the Hall effect sensor and the pin assembly;

[0019] Figure 13 for Figure 12 A three-dimensional structural diagram of a connector pin;

[0020] Figure 14 for Figure 11 A three-dimensional structural diagram of a circuit board assembly;

[0021] Figure 15 for Figure 11 A three-dimensional structural diagram of the middle stator assembly after removing the cover, Hall effect components, and circuit board assembly;

[0022] Figure 16 A cross-sectional structural schematic diagram of the stator assembly provided in the third embodiment of this application;

[0023] Figure 17 for Figure 16 A schematic diagram showing the positional relationship between the Hall effect sensor and the pin assembly;

[0024] Figure 18 for Figure 17 A three-dimensional structural diagram of the center pin assembly;

[0025] Figure 19 for Figure 18 A three-dimensional structural diagram of the center connector pin;

[0026] Figure 20 for Figure 16 A three-dimensional structural diagram of a circuit board assembly;

[0027] Figure 21 for Figure 16 A three-dimensional structural diagram of the middle stator assembly after removing the cover, Hall effect components, and circuit board assembly;

[0028] In the diagram: 10-Electrical actuator, 100-Stator assembly, 200-Valve assembly, 110-Circuit board assembly, 120-Coil assembly, 130-Hall effect sensor assembly, 140-Pin assembly, 150-Stator enclosure, 160-Cover, 111-Substrate, 1111-Metal via, 121-Winding, 122-Insulating frame, 123-Claw pole housing, 124-Wound pin, 131-Hall effect sensor, 132-Cage, 1311-Sensing part, 1312-Terminal, 1312a-First section, 1312b-Second section, 1321-First slot, 1322-Front end wall, 13 23-Rear end wall, 1321a-First side opening, 1321b-Second side opening, 1321c-Third side opening, 141-Connecting pin, 142-Pin encapsulation, 1411-Connecting section, 1412-Intermediate section, 1413-External section, 151-Rotor receiving cavity, 152-Control receiving cavity, 153-Interface receiving cavity, 154-Hall receiving cavity, 155-Cap, 156-Upper end wall, 1541-First bottom wall, 1542-First peripheral wall, 210-Rotor assembly, 220-Valve port, 230-Throttle port, 240-Sleeve, 211-Magnetic rotor, 212-Valve core. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0030] The following is combined Figures 1 to 21This application provides a detailed description of a stator assembly 100 and an electric actuator 10 according to an embodiment. The stator assembly 100 includes a circuit board assembly 110, a coil assembly 120, a Hall effect assembly 130, a pin assembly 140, a stator enclosure 150, and a cover 160. The stator enclosure 150 and the cover 160 cooperate to form a control receiving cavity 152. The stator enclosure 150 has a rotor receiving cavity 151, an interface receiving cavity 153, and a Hall effect receiving cavity 154. The pin assembly 140 is electrically connected to the wiring harness of a thermal management system.

[0031] In one possible implementation, the circuit board assembly 110 is electrically connected to the coil assembly 120, the Hall assembly 130, and the pin assembly 140. At least a portion of the Hall assembly 130 is located on one axial side of the coil assembly 120, and at least a portion of the pin assembly 140 is located on the axial side of the coil assembly 120 near the Hall assembly 130. A first plane is defined, which is parallel to the axial direction of the coil assembly 120. The projection of the Hall assembly 130 onto the first plane overlaps with the projection of the pin assembly 140 onto the first plane.

[0032] For ease of understanding, such as Figures 1 to 3 , Figure 11 and Figure 16 As shown in the first to third embodiments, the coordinate axes of the spatial coordinate system in each figure are consistent. The Z-axis is parallel to the axial direction of the coil assembly 120, and can be considered as the height direction of the stator assembly 100. The X-axis is parallel to one radial direction of the coil assembly 120, and can be considered as the length direction of the stator assembly 100. The Y-axis is parallel to the other radial direction of the coil assembly 120, and can be considered as the width direction of the stator assembly 100. The plane containing the X and Y axes is parallel to the first plane. The plane containing the X and Y axes is parallel to the second plane. It should be noted that the direction of projection mentioned in this embodiment is perpendicular to the corresponding plane.

[0033] like Figures 1 to 3In the first embodiment shown, a portion of the pin assembly 140 is located on one axial side of the coil assembly 120, and a portion of the Hall assembly 130 is located on the axial side of the coil assembly 120 near the pin assembly 140. This arrangement results in partial overlap between the projections of the pin assembly 140 and the coil assembly 120 on the second plane, and also partial overlap between the projections of the Hall assembly 130 and the coil assembly 120 on the second plane. Furthermore, the projections of the Hall assembly 130 and the pin assembly 140 on the first plane partially overlap. This configuration ensures that the overall width of the Hall assembly 130 and the pin assembly 140 is substantially the same as the width of the coil assembly 120, and that the height of the Hall assembly 130 is substantially the same as the height of the pin assembly 140. Therefore, the structure of the Hall assembly 130, the pin assembly 140, and the coil assembly 120 can be more compact, which is beneficial for reducing the size of the stator assembly 100 to meet the requirements of stator assembly 100 miniaturization.

[0034] In one possible implementation, a second plane is defined, which is perpendicular to the axial direction of the coil assembly 120, and the projection of the Hall assembly 130 on the second plane overlaps with the projection of the pin assembly 140 on the second plane.

[0035] For ease of understanding, such as Figures 1 to 3 In the first embodiment shown, the projections of the Hall component 130, the pin component 140, and the coil component 120 on the second plane overlap. This arrangement makes the structure of the Hall component 130, the pin component 140, and the coil component 120 more compact.

[0036] In one possible implementation, the pin assembly 140 includes a wiring pin 141, the wiring pin 141 includes a connecting segment 1411, the connecting segment 1411 is soldered and fixed to the circuit board assembly 110, defines a first radial direction of the coil assembly 120, the first radial direction is arranged perpendicular to the first plane, and the connecting segment 1411 and the Hall assembly 130 are arranged along the first radial direction.

[0037] For ease of understanding, such as Figures 1 to 3 In the first embodiment shown, the first radial direction is parallel to the Y-axis direction, and the first segment 1312a of the Hall component 130 is also welded and fixed to the circuit board assembly 110. The connecting segment 1411 and the first segment 1312a of the Hall component 130 are arranged approximately along the first radial direction. With this arrangement, the arrangement direction of the connecting segment 1411 and the first segment 1312a can be parallel to the length direction of the side of the substrate 111, which is beneficial to improving the effective utilization rate of the area of ​​the substrate 111.

[0038] In the first embodiment, a portion of the connecting segment 1411 is located in the metal via 1111 of the substrate 111 and is welded and fixed to the metal inner wall forming the metal via 1111, and a portion of the first segment 1312a is located in the metal via 1111 of the substrate 111 and is welded and fixed to the metal inner wall forming the metal via 1111.

[0039] like Figure 1 , Figure 4 and Figure 8 In the first embodiment shown, the length direction of the first segment 1312a is perpendicular to the axial direction of the coil assembly 120, and the length direction of the first segment 1312a is parallel to the length direction of the connecting segment 1411.

[0040] In one possible implementation, the connector 141 includes an outer segment 1413 and an intermediate segment 1412. The length direction of the outer segment 1413 is parallel or perpendicular to the length direction of the connecting segment 1411. The intermediate segment 1412 is located between the outer segment 1413 and the connecting segment 1411. The length direction of the intermediate segment 1412 is inclined relative to the first plane toward the Hall component 130.

[0041] For ease of understanding, such as Figure 1 In the first embodiment shown, the external segment 1413 is used for electrical connection with the wiring harness of the thermal management system. The length direction of the external segment 1413 is parallel to the length direction of the connecting segment 1411, and the length direction of the intermediate segment 1412 is inclined relative to the first plane towards the Hall component 130, so that the external segment 1413 and the Hall component 130 can be closer together, which helps to reduce the height of the external segment 1413 relative to the Hall component 130.

[0042] like Figure 1 In the first embodiment shown, the length direction of the outer segment 1413 is perpendicular to the axial direction of the coil assembly 120.

[0043] In some embodiments, the length direction of the outer segment 1413 is perpendicular to the length direction of the connecting segment 1411.

[0044] In some embodiments, the length direction of the outer segment 1413 is arranged parallel to the axial direction of the coil assembly 120.

[0045] like Figures 16 to 19 In the third embodiment shown, the middle section 1412 of the first connector pin 141a and the middle section 1412 of the second connector pin 141b are inclined toward each other. This arrangement also makes the outer sections 1413 of the two connector pins 141 closer together, which helps to reduce the size of the interface receiving cavity 153.

[0046] In one possible implementation, there are at least two connector pins 141, including a first connector pin 141a and a second connector pin 141b. The connecting segment 1411 of the first connector pin 141a is located between the connecting segment 1411 of the second connector pin 141b and the Hall component 130, or the Hall component 130 is located between the connecting segment 1411 of the first connector pin 141a and the connecting segment 1411 of the second connector pin 141b.

[0047] like Figure 6 In the first embodiment shown, the shape of the first connector pin 141a is substantially the same as that of the second connector pin 141b, and the connecting segment 1411 of the first connector pin 141a is approximately located between the connecting segment 1411 of the second connector pin 141b and the first segment 1312a of the Hall component 130.

[0048] like Figure 19 In the third embodiment shown, the shape of the first connector pin 141a is symmetrical to the shape of the second connector pin 141b, and the first segment 1312a of the Hall component 130 is approximately located between the connecting segment 1411 of the first connector pin 141a and the connecting segment 1411 of the second connector pin 141b.

[0049] In one possible implementation, the stator assembly 100 has a Hall receiving cavity 154, at least a portion of the Hall assembly 130 is located in the Hall receiving cavity 154, the Hall assembly 130 includes a Hall element 131, the Hall element 131 includes a sensing part 1311 and a terminal 1312, the sensing part 1311 abuts against the inner wall forming the Hall receiving cavity 154, the sensing part 1311 is electrically connected to the circuit board assembly 110 through the terminal 1312, the terminal 1312 includes a first segment 1312a and a second segment 1312b, the length direction of the first segment 1312a is inclined relative to the length direction of the second segment 1312b, and the terminal 1312 is in an elastic deformation state.

[0050] For ease of understanding, such as Figures 2 to 4 and Figure 8In the first embodiment shown, the terminal 1312 is a metal needle capable of elastic deformation. The opening direction of the Hall receiving cavity 154 is perpendicular to the axis of the coil assembly 120. The sensing unit 1311 can generate an electrical signal based on the magnetic field change of the magnetic rotor 211, and the terminal 1312 can transmit the electrical signal to the circuit board assembly 110. The first segment 1312a is soldered and fixed to the substrate 111 of the circuit board assembly 110, and the second segment 1312b is located at the end of the first segment 1312a away from the circuit board assembly 110 and is fixedly connected to the sensing unit 1311. The length direction of the first segment 1312a is basically perpendicular to the axis of the coil assembly 120. The length direction of the second segment 1312b is inclined relative to the length direction of the first segment 1312a. The sensing part 1311 is squeezed by the inner wall forming the receiving cavity, causing the terminal 1312 to undergo elastic deformation. This arrangement allows the sensing part 1311 to remain in contact with the inner wall of the receiving cavity, which can reduce the assembly error between the Hall assembly 130 and the Hall receiving cavity 154, and help improve the positional accuracy of the sensing part 1311, thereby improving the position detection accuracy of the stator assembly 100 for the magnetic rotor 211.

[0051] In some embodiments, the opening of the Hall receiving cavity 154 is arranged parallel to the axial direction of the coil assembly 120, and the length direction of the first segment 1312a is arranged parallel to the axial direction of the coil assembly 120.

[0052] like Figure 11 In the second embodiment shown, the Hall component 130 is composed of Hall elements 131.

[0053] In one possible implementation, the inner wall forming the Hall receiving cavity 154 includes a first peripheral wall 1542 and a first bottom wall 1541. The extending direction of the first peripheral wall 1542 is arranged parallel to or perpendicular to the axial direction of the coil assembly 120. The outer peripheral wall of the Hall assembly 130 is limited and fitted with the first peripheral wall 1542. The plane where the first bottom wall 1541 is located is inclined relative to the extending direction of the first peripheral wall 1542. The first bottom wall 1541 abuts against the sensing part 1311.

[0054] For ease of understanding, such as Figure 2 and Figure 3In the first embodiment shown, a first peripheral wall 1542 is disposed around the outer peripheral wall of the Hall assembly 130. The first peripheral wall 1542 can abut against the outer peripheral wall of the Hall assembly 130. The extending direction of the first peripheral wall 1542 is perpendicular to the axial direction of the coil assembly 120. The Hall assembly 130 can be installed into or removed from the Hall receiving cavity 154 along the extending direction of the first peripheral wall 1542. The plane containing the first bottom wall 1541 is inclined relative to the extending direction of the first peripheral wall 1542. The plane containing the first bottom wall 1541 can be regarded as an inclined plane. The first bottom wall 1541 abuts against the outer wall of the sensing part 1311.

[0055] In the first embodiment, the angle between the plane containing the first bottom wall 1541 and the extension direction of the first peripheral wall 1542 is an obtuse angle, defined as a, and the angle between the length direction of the first segment 1312a and the length direction of the second segment 1312b is also an obtuse angle, defined as b, where a is less than b.

[0056] In one possible implementation, the Hall effect assembly 130 includes a retainer 132, which includes a first groove 1321. A portion of the first segment 1312a is located within the first groove. The first groove is recessed inward from the outer peripheral wall of the retainer 132. The first groove 1321 has a first side opening 1321a, a second side opening 1321b, and a third side opening 1321c. The first side opening 1321a is located on the outer peripheral wall of the retainer 132. The second side opening 1321b is located on the front end wall 1322 of the retainer 132. The third side opening 1321c is located on the rear end wall 1323 of the retainer 132. The front end wall 1322 of the retainer 132 is disposed opposite to the side of the sensing part 1311 away from the first bottom wall 1541. The rear end wall 1323 of the retainer 132 is disposed opposite to the circuit board assembly 110.

[0057] For ease of understanding, such as Figure 7 and Figure 8 In the first embodiment shown, the direction of the first side opening 1321a is perpendicular to the length direction of the first segment 1312a, and the directions of the second side opening 1321b and the third side opening 1321c are consistent with the length direction of the first segment 1312a. The first segment 1312a can enter the first groove through the first side opening 1321a, the second side opening 1321b, and the third side opening 1321c. This arrangement facilitates the installation of the Hall element 131 and the holder 132. The front end wall 1322 of the holder 132 can abut against one side wall of the sensing part 1311, and the rear end wall 1323 of the holder 132 can abut against the substrate 111.

[0058] In one possible implementation, the stator assembly 100 includes a cap 155 that protrudes upward from the upper end wall 156 of the stator assembly 100. The stator assembly 100 has a rotor receiving cavity 151. The cap 155 separates the rotor receiving cavity 151 and the Hall receiving cavity 154. At least a portion of the Hall assembly 130 is located on the radial side of the cap 155, and at least a portion of the pin assembly 140 is located on the radial side of the cap 155 near the Hall assembly 130.

[0059] For ease of understanding, such as Figure 1 and Figure 2 In the first embodiment, the cap 155 is part of the stator enclosure 150. The cap protrudes upward from the upper end wall 156 of the stator enclosure 150. The Hall assembly 130 and the pin assembly 140 are located approximately on the same radial side of the cap 155. This arrangement is more conducive to improving the structural compactness of the stator assembly 100.

[0060] In one possible implementation, the stator assembly 100 has a control receiving cavity 152 and an interface receiving cavity 153, the circuit board assembly 110 is located in the control receiving cavity 152, the stator encapsulation portion 150 is injection molded with the coil assembly 120 and the pin assembly 140 as inserts, and the stator encapsulation portion 150 cooperates with the cover 160 to form the control receiving cavity 152.

[0061] For ease of understanding, such as Figure 1 and Figure 2 In the first embodiment shown, a portion of the first segment 1312a is located in the control receiving cavity 152, the connecting segment 1411 is located in the control receiving cavity 152, the interface receiving cavity 153 is formed in the stator encapsulation portion 150, and the external segment 1413 is located in the interface receiving cavity 153.

[0062] like Figure 1 In the first embodiment shown, the circuit board assembly 110 is generally located on the radial side of the coil assembly 120, the opening direction of the control cavity 152 is perpendicular to the axial direction of the coil assembly 120, and the opening direction of the interface cavity 153 is perpendicular to the axial direction of the coil assembly 120.

[0063] In some embodiments, the circuit board assembly 110 is located generally on one axial side of the coil assembly 120.

[0064] In some embodiments, the opening direction of the control cavity 152 is arranged parallel to the axial direction of the coil assembly 120.

[0065] In some embodiments, the opening direction of the interface receiving cavity 153 is parallel to the axial direction of the coil assembly 120.

[0066] like Figure 5In the first embodiment shown, the pin assembly 140 includes a pin encapsulation portion 142, which is injection molded with at least two wiring pins 141 as inserts, and the stator encapsulation portion 150 is injection molded with the pin encapsulation portion 142 as an insert.

[0067] like Figure 1 and Figure 2 In the first embodiment shown, the Hall cavity 154 is connected to the control cavity 152, the opening of the Hall cavity 154 is located on the inner wall of the control cavity 152, and the opening direction of the Hall cavity 154 is parallel to the opening direction of the control cavity 152.

[0068] In the first embodiment, the cover 160 is welded and fixed to the stator enclosure 150, so that the cover 160 is sealed to the control receiving cavity 152.

[0069] like Figure 1 In the first embodiment shown, the coil assembly 120 includes a winding 121, an insulating frame 122, a claw pole housing 123, and a winding pin 124.

[0070] For ease of understanding, such as Figure 1 As shown, the insulating frame 122 is made of insulating plastic, the winding 121 is wound around the insulating frame 122, the claw pole housing 123 is made of galvanized steel sheet, the winding 121 and the insulating frame 122 are basically located inside the claw pole housing 123, the winding pin 124 is limited and engaged with the insulating frame 122, the winding 121 is also wound around the winding pin 124, and part of the winding pin 124 is located in the metal via 1111 of the circuit board assembly 110 and is welded and fixed to the metal inner wall forming the metal via 1111.

[0071] The following is combined Figure 1 This application provides a detailed description of an electric valve according to an embodiment. Such an electric valve includes the stator assembly 100 described above, and also includes a valve assembly 200. The valve assembly 200 includes a valve port 220, a rotor assembly 210, and a sleeve 240. The rotor assembly 210 includes a magnetic rotor 211 and a valve core 212.

[0072] like Figure 1In the first embodiment shown, the valve port 220 and the valve core 212 form a throttling orifice 230. At least a portion of the magnetic rotor 211 is located within the sleeve 240, and at least a portion of the sleeve 240 is located within the rotor receiving cavity 151. When a drive signal is applied to the coil assembly 120, the stator assembly 100 generates an alternating magnetic field in the magnetic rotor 211. Under the action of this magnetic field, the magnetic rotor 211 rotates relative to the stator assembly 100, thereby causing the valve core 212 to rise or fall relative to the valve port 220. The valve core 212 is generally needle-shaped, and at least a portion of the valve core 212 is located at the valve port of the valve port 220. A throttling orifice 230 is formed between the outer peripheral wall of the valve core 212 and the inner peripheral wall forming the valve port. When the valve core 212 rises or falls relative to the valve port 220, the flow area of ​​the throttling orifice 230 changes. This arrangement allows the throttling orifice 230 to throttle the refrigerant, thereby achieving the effect of changing the refrigerant pressure.

[0073] The embodiments described above are merely examples of several implementations of this application, and while the descriptions are quite specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications without departing from the concept of this application, and these modifications all fall within the scope of protection of this application.

Claims

1. A stator assembly, characterized in that, The device includes a coil assembly (120), a circuit board assembly (110), a Hall effect assembly (130), and a pin assembly (140). The circuit board assembly (110) is electrically connected to the coil assembly (120), the Hall effect assembly (130), and the pin assembly (140). At least a portion of the Hall effect assembly (130) is located on one axial side of the coil assembly (120), and at least a portion of the pin assembly (140) is located on the axial side of the coil assembly (120) near the Hall effect assembly (130). A first plane is defined, which is parallel to the axial direction of the coil assembly (120). The projection of the Hall effect assembly (130) onto the first plane overlaps with the projection of the pin assembly (140) onto the first plane.

2. The stator assembly according to claim 1, characterized in that, A second plane is defined, which is perpendicular to the axial direction of the coil assembly (120), and the projection of the Hall assembly (130) on the second plane overlaps with the projection of the pin assembly (140) on the second plane.

3. The stator assembly according to claim 1 or 2, characterized in that, The pin assembly (140) includes a connector pin (141) with a connecting segment (1411) which is welded to the circuit board assembly (110) and defines a first radial direction of the coil assembly (120). The first radial direction is perpendicular to the first plane, and the connecting segment (1411) and the Hall assembly (130) are arranged along the first radial direction.

4. The stator assembly according to claim 3, characterized in that, The connector pin (141) includes an outer section (1413) and an intermediate section (1412). The length direction of the outer section (1413) is parallel or perpendicular to the length direction of the connecting section (1411). The intermediate section (1412) is located between the outer section (1413) and the connecting section (1411). The length direction of the intermediate section (1412) is inclined relative to the first plane toward the Hall component (130).

5. The stator assembly according to claim 3, characterized in that, There are at least two wiring pins (141), including a first wiring pin (141a) and a second wiring pin (141b). The connection segment (1411) of the first wiring pin (141a) is located between the connection segment (1411) of the second wiring pin (141b) and the Hall component (130), or the Hall component (130) is located between the connection segment (1411) of the first wiring pin (141a) and the connection segment (1411) of the second wiring pin (141b).

6. The stator assembly according to claim 4, characterized in that, There are at least two wiring pins (141), including a first wiring pin (141a) and a second wiring pin (141b). The connection segment (1411) of the first wiring pin (141a) is located between the connection segment (1411) of the second wiring pin (141b) and the Hall component (130), or the Hall component (130) is located between the connection segment (1411) of the first wiring pin (141a) and the connection segment (1411) of the second wiring pin (141b).

7. The stator assembly according to any one of claims 1 to 2, 4 to 6, characterized in that, The stator assembly (100) has a Hall receiving cavity (154), at least a portion of the Hall assembly (130) is located in the Hall receiving cavity (154), the Hall assembly (130) includes a Hall element (131), the Hall element (131) includes a sensing part (1311) and a terminal (1312), the sensing part (1311) abuts against the inner wall forming the Hall receiving cavity (154), the sensing part (1311) is electrically connected to the circuit board assembly (110) through the terminal (1312), the terminal (1312) includes a first segment (1312a) and a second segment (1312b), the length direction of the first segment (1312a) is inclined relative to the length direction of the second segment (1312b), and the terminal (1312) is in an elastic deformation state.

8. The stator assembly according to claim 7, characterized in that, The inner wall forming the Hall receiving cavity (154) includes a first peripheral wall (1542) and a first bottom wall (1541). The outer peripheral wall of the Hall assembly (130) is limited and fitted with the first peripheral wall (1542). The plane of the first bottom wall (1541) is inclined relative to the extension direction of the first peripheral wall (1542). The first bottom wall (1541) abuts against the sensing part (1311).

9. The stator assembly according to claim 8, characterized in that, The Hall effect assembly (130) includes a retainer (132), the retainer (132) including a first groove (1321), a portion of the first segment (1312a) being located within the first groove (1321), the first groove (1321) being recessed inward from the outer peripheral wall of the retainer (132), the first groove (1321) having a first side opening (1321a), a second side opening (1321b) and a third side opening (1321c), the first side opening (1321a) being located within the retainer (1322a). The second side opening (1321b) is located on the front end wall (1322) of the retainer (132) and the rear end wall (1323) of the retainer (132). The front end wall (1322) of the retainer (132) is disposed opposite to the side of the sensing part (1311) away from the first bottom wall (1541), and the rear end wall (1323) of the retainer (132) is disposed opposite to the circuit board assembly (110).

10. The stator assembly according to claim 3, characterized in that, The stator assembly (100) has a Hall receiving cavity (154), at least a portion of the Hall assembly (130) is located in the Hall receiving cavity (154), the Hall assembly (130) includes a Hall element (131), the Hall element (131) includes a sensing part (1311) and a terminal (1312), the sensing part (1311) abuts against the inner wall forming the Hall receiving cavity (154), the sensing part (1311) is electrically connected to the circuit board assembly (110) through the terminal (1312), the terminal (1312) includes a first segment (1312a) and a second segment (1312b), the length direction of the first segment (1312a) is inclined relative to the length direction of the second segment (1312b), and the terminal (1312) is in an elastic deformation state.

11. The stator assembly according to claim 7, characterized in that, The stator assembly (100) includes a cap (155) which protrudes upward from the upper end wall (156) of the stator assembly (100). The stator assembly (100) has a rotor receiving cavity (151). The cap (155) separates the rotor receiving cavity (151) and the Hall receiving cavity (154). At least a portion of the Hall assembly (130) is located on the radial side of the cap (155), and at least a portion of the pin assembly (140) is located on the radial side of the cap (155) near the Hall assembly (130).

12. The stator assembly according to any one of claims 8 to 10, characterized in that, The stator assembly (100) includes a cap (155) which protrudes upward from the upper end wall (156) of the stator assembly (100). The stator assembly (100) has a rotor receiving cavity (151). The cap (155) separates the rotor receiving cavity (151) and the Hall receiving cavity (154). At least a portion of the Hall assembly (130) is located on the radial side of the cap (155), and at least a portion of the pin assembly (140) is located on the radial side of the cap (155) near the Hall assembly (130).

13. The stator assembly according to any one of claims 1 to 2, 4 to 6, 8 to 11, characterized in that, The stator assembly (100) has a control receiving cavity (152) and an interface receiving cavity (153). The circuit board assembly (110) is located in the control receiving cavity (152). The stator assembly (100) includes a stator encapsulation part (150) and a cover (160). The stator encapsulation part is injection molded with the coil assembly (120) and the pin assembly (140) as inserts. The stator encapsulation part (150) and the cover (160) cooperate to form the control receiving cavity (152).

14. The stator assembly according to claim 3, characterized in that, The stator assembly (100) has a control receiving cavity (152) and an interface receiving cavity (153). The circuit board assembly (110) is located in the control receiving cavity (152). The stator assembly (100) includes a stator encapsulation part (150) and a cover (160). The stator encapsulation part is injection molded with the coil assembly (120) and the pin assembly (140) as inserts. The stator encapsulation part (150) and the cover (160) cooperate to form the control receiving cavity (152).

15. The stator assembly according to claim 7, characterized in that, The stator assembly (100) has a control receiving cavity (152) and an interface receiving cavity (153). The circuit board assembly (110) is located in the control receiving cavity (152). The stator assembly (100) includes a stator encapsulation part (150) and a cover (160). The stator encapsulation part is injection molded with the coil assembly (120) and the pin assembly (140) as inserts. The stator encapsulation part (150) and the cover (160) cooperate to form the control receiving cavity (152).

16. The stator assembly according to claim 12, characterized in that, The stator assembly (100) has a control receiving cavity (152) and an interface receiving cavity (153). The circuit board assembly (110) is located in the control receiving cavity (152). The stator assembly (100) includes a stator encapsulation part (150) and a cover (160). The stator encapsulation part is injection molded with the coil assembly (120) and the pin assembly (140) as inserts. The stator encapsulation part (150) and the cover (160) cooperate to form the control receiving cavity (152).

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