WO2021008075A1

WO2021008075A1 - Motor stator assembly and motor

Info

Publication number: WO2021008075A1
Application number: PCT/CN2019/125364
Authority: WO
Inventors: 李庆; 高晓峰; 陈东锁; 王莉
Original assignee: 珠海凯邦电机制造有限公司; 珠海格力电器股份有限公司
Priority date: 2019-07-15
Filing date: 2019-12-13
Publication date: 2021-01-21
Also published as: CN110380526A

Abstract

The present application relates to the technical field of motor mechanical equipment, and provides a motor stator assembly and a motor, solving the technical problem in the prior art that an axial magnetic field motor cannot accurately detect the position of a rotor. The motor stator assembly comprises a stator and a controller provided in the stator; the controller comprises a master control board and a Hall plate which is in communication connection with the master control board; the master control board and the Hall plate are respectively provided at two sides of the stator in an axial direction, and the Hall plate is closer to a rotor than the master control board in the axial direction of the stator; Hall elements on the Hall plate are provided directly facing a rotor magnetic ring. In the present application, inductive control of the axial magnetic field motor can be realized. The Hall plate is closer to the rotor, and therefore, the rotor position in the operating process of the motor can be accurately detected by means of the Hall elements on the Hall plate directly facing the rotor magnetic ring, thereby improving the detection precision of the rotor position and also improving the stability of the motor operation.

Description

Motor stator assembly and motor

This application claims the priority of a patent application filed to the State Intellectual Property Office of China on July 15, 2019, with application number 201910634691.3 and the title of the invention "a motor stator assembly and motor".

Technical field

This application relates to the technical field of electrical machinery and equipment, and in particular to a motor stator assembly and a motor.

Background technique

Axial field motors are also called "disc motors", which are motors whose main magnetic field is along the direction of the shaft. In recent years, axial field motors have gained more and more attention due to their compact structure, high efficiency and high power density.

The applicant found that the prior art has at least the following technical problems: due to space constraints, the rotor and controller of the axial field motor in the prior art are located on both sides of the stator, and can only adopt non-inductive control. However, the axial field motor using non-inductive control has the following problems: 1. Because the non-inductive control is adopted, there is no Hall sensor, so the position of the rotor cannot be accurately detected when the motor is started, resulting in a jitter problem when the motor starts, and the motor starts Unsteadiness reduces the operation accuracy; 2. Because the non-inductive control is used and the controller is located far away from the rotor, the sensing distance to the rotor is long, and the rotor position cannot be accurately detected. Therefore, when the motor speed is relatively low, the back electromotive force is relatively high. Small, resulting in abnormalities in the back-EMF zero-crossing detection circuit.

Summary of the invention

The purpose of this application is to provide a motor stator assembly and an axial magnetic field motor to solve the technical problem that the axial magnetic field motor cannot accurately detect the rotor position in the prior art. The many technical effects that can be produced by the preferred technical solutions among the many technical solutions provided in this application are described in detail below.

In order to achieve the above objectives, this application provides the following technical solutions:

A motor stator assembly provided by the present application includes a stator and a controller arranged inside the stator. The controller includes a main control board and a Hall board communicatively connected with the main control board. The main control board And the Hall plate are respectively arranged on both sides of the stator axial direction, and the Hall plate is arranged closer to the rotor in the stator axial direction relative to the main control board, and is positioned at The Hall element on the Hall plate is arranged directly to the rotor magnetic ring.

According to a preferred embodiment, the Hall plate is arranged on the side of the stator close to the rotor in the axial direction in a manner of being embedded in the stator iron core tooth shoe ring.

According to a preferred embodiment, a skeleton is provided in the stator iron core tooth shoe ring, and the skeleton is a boss structure that surrounds the stator iron core tooth shoe ring and extends toward the center of the stator.

According to a preferred embodiment, the boss structure of the skeleton is provided with bosses and through buckles for connecting the Hall plate at intervals.

According to a preferred embodiment, the Hall plate is provided with a through hole that cooperates with the protruding column, so that the Hall plate can be matched with the protruding column through the cooperation of the through hole and the protruding column. The fixed connection of the skeleton.

According to a preferred embodiment, a through hole matched with the through button is provided on the Hall plate, so that the Hall plate can interact with the through hole through the cooperation of the through hole and the through button. The fixed connection of the skeleton.

According to a preferred embodiment, the Hall element is arranged on the side of the Hall plate facing the rotor. When the Hall plate is installed in the stator, the magnetic field lines generated by the rotor magnetic ring can follow the The axial direction of the stator passes through the Hall element.

According to a preferred embodiment, the main control board is arranged on the side of the stator away from the rotor in the axial direction in a manner of being embedded in the stator core yoke ring.

According to a preferred embodiment, the main control board and the inner wall of the stator core yoke ring are fixedly connected by welding.

According to a preferred embodiment, a communication connection between the main control board and the Hall board is realized through a pin or a wire or a needle seat.

The application also provides a motor, including the aforementioned motor stator assembly.

According to a preferred embodiment, it further includes a rotor, and the rotor is connected with the stator in a manner that the rotor magnetic ring faces the Hall element in the motor stator assembly.

Based on the above technical solution, the motor stator assembly of the embodiment of the present application has at least the following technical effects:

The motor stator assembly provided in the present application includes a stator and a controller arranged inside the stator. The controller includes a main control board and a Hall board communicatively connected with the main control board. The main control board and the Hall board are respectively arranged in the axial direction of the stator The two sides of the direction and the Hall plate are arranged closer to the rotor in the axial direction of the stator relative to the main control plate, and the Hall element on the Hall plate is arranged facing the rotor magnetic ring. By setting the controller to include the main control board and the Hall plate, and setting the Hall plate on the side closer to the rotor relative to the main control board, the sensory control of the axial field motor is realized. The distance between the rotor plate and the rotor is closer, so the Hall element installed on the Hall plate directly opposite to the rotor magnetic ring can accurately detect the rotor position during the motor operation, which improves the detection accuracy of the rotor position and improves the stability of the motor operation. Sex.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

Figure 1 is an exploded view of the motor of the present application;

2 is a schematic diagram of the structure of the controller in the motor stator assembly of the present application;

Fig. 3 is a schematic view of the structure of the motor of the present application;

Fig. 4 is a schematic structural diagram of the motor of the present application from another perspective;

Fig. 5 is a schematic structural diagram of the motor stator assembly of the present application.

In the figure: 10-controller; 11-stator; 12-rotor; 101-main control board; 102-pin; 103-Hall plate; 104-Hall element; 105-through hole; 111-stator core yoke ; 112-skeleton; 113-convex column; 114-through button.

Detailed ways

In order to make the purpose, technical solutions, and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other implementations obtained by a person of ordinary skill in the art without creative work shall fall within the protection scope of this application.

The technical solution of the present application will be described in detail below with reference to Figures 1 to 5 of the specification.

As shown in FIG. 1, the present application provides a motor stator assembly, which includes a stator 11 and a controller 10 arranged inside the stator 11. The controller 10 includes a main control board 101 and a Hall board 103 communicatively connected with the main control board 101. The main control board 101 and the Hall plate 103 are respectively arranged on both sides of the stator 11 in the axial direction, and the Hall plate 103 is arranged closer to the rotor 12 in the axial direction of the stator 11 relative to the main control board 101, and is positioned at The Hall element 104 on the Hall plate 103 is arranged directly opposite to the rotor magnetic ring. Therefore, compared to the existing controller for axial field motors, this application adopts a split-type main control board and a hall board, and the hall board is arranged closer to the rotor, so that the application can The controller can realize the inductive control of the motor. Since the Hall plate is closer to the rotor, the Hall element on the Hall plate is set directly against the rotor magnetic ring, so the Hall element on the Hall plate can accurately detect The rotor position during the operation of the motor improves the detection accuracy of the rotor position and at the same time improves the stability of the motor operation.

Further, as shown in Fig. 2, Fig. 2 shows a schematic structural diagram of the controller in the motor stator assembly of the present application. The controller 10 of the embodiment of the present application includes a main control board 101 at the bottom and a Hall board 103 at the top, so that when the controller including the main control board 101 and the Hall board 103 is installed in the stator 11, the main control The plate 101 and the Hall plate 103 can be respectively located on both sides of the axial direction of the stator, so that the Hall plate 103 is arranged closer to the rotor 12 relative to the main control plate 101. Thus, the Hall element 104 on the Hall plate 103 can accurately detect the position of the rotor. Preferably, the communication connection between the main control board 101 and the Hall board 103 is achieved through a pin 102 or a wire or a needle seat, as shown in FIG. 2.

Further, as shown in Figs. 4 and 5, the Hall plate 103 is arranged on the side of the stator 11 close to the rotor 12 in the axial direction of the stator 11 in a manner of being embedded in the stator iron core tooth shoe ring. Preferably, a skeleton 112 is provided in the stator iron core tooth shoe ring. The frame 112 is used to fix the Hall plate 103. Preferably, the skeleton 112 has a boss structure that surrounds the stator iron core tooth shoe ring and extends toward the center of the stator 11, as shown in FIG. 5. Preferably, the boss structure of the frame 112 is provided with a boss 113 and a through button 114 spaced apart from each other for connecting the Hall plate 103, as shown in the enlarged view of FIG. 5. Preferably, the Hall plate 103 is provided with a through hole 105 that cooperates with the boss 113 and/or the through button 114, so that the Hall plate 103 passes through the through hole 105 and the boss 113 and/or passes through the through hole. The cooperation of 105 and the through button 114 realizes the fixed connection with the frame 112, thereby improving the installation stability of the Hall plate. Preferably, the through hole 105 of the Hall plate 103 and the protrusion 113 of the frame 112 are fixed by interference fit.

Further, the Hall element 104 is arranged on the side of the Hall plate 103 facing the rotor 12. When the Hall plate 103 is installed in the stator 11, the magnetic field lines generated by the rotor magnetic ring can pass through the Hall element along the axial direction of the stator 11. 104. In order to make the axial excitation surface generated by the rotor magnetic ring pass through the Hall element in parallel, the Hall element 104 can accurately detect the position of the rotor.

Further, as shown in FIGS. 1, 3 and 5, the main control board 101 is arranged on the side of the stator 11 away from the rotor 12 in the axial direction. Preferably, the main control board 101 is arranged on the side of the stator 11 away from the rotor 12 in the axial direction in a manner of being embedded in the stator core yoke 111 ring. Preferably, the main control board 101 and the inner wall of the stator core yoke 111 are fixedly connected by welding. Preferably, a welding hole is provided on the outer wall of the main control board 101 to realize welding with the stator core yoke through the welding hole.

The motor stator assembly of the embodiment of the present application solves the problem of limited installation space for the controller of the axial field motor. By arranging the Hall plate and the main control plate on both sides of the stator axial direction, the Hall plate is closer to the rotor, and the distance between the Hall plate and the rotor is closer, and the Hall plate is set directly opposite to the rotor magnetic ring. The Hall element detects the rotor position more accurately, which improves the stability of the motor operation.

According to another preferred embodiment of the present application, the present application also provides a motor including the aforementioned motor stator assembly. Further, it also includes a rotor 12, and the rotor 12 is connected with the stator 11 in a manner that the rotor magnetic ring faces the Hall element 104 in the motor stator assembly. Thus, the motor can accurately detect the rotor position through the Hall element, realize the sensory control of the controller, and improve the stability of the motor operation.

The above are only specific implementations of this application, but the protection scope of this application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application. Should be covered within the scope of protection of this application.

Claims

A motor stator assembly, characterized in that it comprises a stator (11) and a controller (10) arranged inside the stator (11). The controller (10) comprises a main control board (101) and The main control board (101) is communicatively connected to the Hall board (103). The main control board (101) and the Hall board (103) are respectively arranged on both sides of the stator (11) in the axial direction and are The Hall plate (103) is arranged closer to the rotor (12) in the axial direction of the stator (11) relative to the main control board (101), and is positioned on the Hall plate (103) The upper Hall element (104) is arranged directly opposite to the rotor magnetic ring.
The motor stator assembly according to claim 1, wherein the Hall plate (103) is arranged on the stator (11) close to the stator (11) in the axial direction in a manner of being embedded in the stator iron core tooth shoe ring. The side of the rotor (12).
The motor stator assembly according to claim 2, characterized in that a skeleton (112) is provided in the stator iron core tooth shoe ring, and the skeleton (112) surrounds the stator iron core tooth shoe ring and faces the A boss structure extending from the center of the stator (11).
The motor stator assembly according to claim 3, characterized in that, on the boss structure of the frame (112), there are provided with a boss (113) for connecting the Hall plate (103) and a communication at a distance from each other. Buckle (114).
The motor stator assembly according to claim 4, characterized in that, the Hall plate (103) is provided with a through hole (105) that matches with the boss (113), so that the Hall plate (103) The board (103) is fixedly connected with the frame (112) through the cooperation of the through hole (105) and the convex column (113).
The motor stator assembly according to claim 4, characterized in that a through hole (105) matching the through button (114) is provided on the Hall plate (103), so that the Hall plate (103) The plate (103) is fixedly connected with the frame (112) through the cooperation of the through hole (105) and the through button (114).
The motor stator assembly according to claim 1, wherein the Hall element (104) is disposed on the side of the Hall plate (103) facing the rotor (12), and the Hall element (103) When installed in the stator (11), the magnetic field lines generated by the rotor magnetic ring can pass through the Hall element (104) along the axial direction of the stator (11).
The motor stator assembly according to any one of claims 1 to 7, characterized in that the main control board (101) is arranged in the stator (11) in a manner of being embedded in the stator core yoke (111) ring The side away from the rotor (12) in the axial direction.
The motor stator assembly according to claim 8, wherein the main control board (101) and the inner wall of the stator core yoke (111) are fixedly connected by welding.
The motor stator assembly according to claim 1, wherein the main control board (101) and the Hall board (103) are connected through a pin, a wire, or a needle seat.
A motor, characterized by comprising the motor stator assembly according to any one of the preceding claims 1 to 10.
The motor according to claim 11, further comprising a rotor (12), and the rotor (12) interacts with the Hall element (104) in the stator assembly of the motor in such a way that the rotor magnetic ring faces the Hall element (104) in the stator assembly of the motor. The stator (11) forms a connection.