WO2021208482A1

WO2021208482A1 - Stator assembly and wiring adjustment method therefor, and magnetic suspension bearing

Info

Publication number: WO2021208482A1
Application number: PCT/CN2020/138267
Authority: WO
Inventors: 陈彬; 张小波; 龚高; 张超; 周东亮
Original assignee: 珠海格力电器股份有限公司
Priority date: 2020-04-13
Filing date: 2020-12-22
Publication date: 2021-10-21
Also published as: CN111396454A

Abstract

Disclosed are a stator assembly and a wiring adjustment method therefor, and a magnetic suspension bearing. The stator assembly comprises a stator iron core (1), an insulation framework (2), a coil winding (3) and a PCB (4). The stator iron core (1) comprises stator teeth (11), the insulation framework (2) is sleeved outside the stator teeth (11), the coil winding (3) is wound around the insulation framework (2), the PCB (4) is arranged on the insulation framework (2), and a wiring path of the coil winding (3) can be adjusted. The stator assembly facilitates the adjustment of the resistance and inductance of a bearing stator according to requirements, and has good applicability and is relatively low-cost.

Description

Stator assembly and its wiring adjustment method and magnetic suspension bearing

Cross-references to related applications

This application is based on a Chinese application with an application number of 202010285233.6 and a filing date of April 13, 2020, and claims its priority. The disclosure of the Chinese application is hereby incorporated into this application as a whole.

Technical field

The application relates to the technical field of magnetic suspension bearings, and in particular to a stator assembly and a wiring adjustment method thereof, and a magnetic suspension bearing.

Background technique

Generally, in the process of manufacturing the radial magnetic bearing stator, the stator assembly includes a stator core, a coil, two stator core skeletons and a PCB board. The two stator core frames are respectively buckled on the two ends of the stator core in the axial direction. One of the stator core frames is provided with a concave portion on the buckling end, and the other stator core frame is provided with a convex portion on the buckling end. The output part, the concave part and the convex part are buckled with each other, and each coil is wound corresponding to the teeth of the stator core. After the stator frame is wound, the enameled copper wire is directly welded to the PCB board through the conductive sheet, and then connected to the controller through the PCB board with wires.

After the bearing stator is manufactured, the wiring method of the entire bearing stator is fixed accordingly. In the subsequent process, the inductance and resistance cannot be adjusted as required, so the applicability is poor. When bearings with different resistances and inductances are required, The cost of replacing the entire bearing stator is relatively high.

Summary of the invention

Therefore, the technical problem to be solved by the present application is to provide a stator assembly and a connection adjustment method thereof, and a magnetic suspension bearing, which facilitates the adjustment of the stator resistance and inductance of the bearing as required, has good applicability and low implementation cost.

In order to solve the above problems, the present application provides a stator assembly including a stator iron core, an insulating frame, coil windings and a PCB board. The stator iron core includes stator teeth, the insulating frame is sleeved outside the stator teeth, and the coil winding is wound on the insulating frame. Above, the PCB board is arranged on the insulating skeleton, and the routing path of the coil winding can be adjusted.

In some embodiments, the PCB board is detachably connected to the insulating frame.

In some embodiments, in a section perpendicular to the central axis of the stator core, stator teeth located in the same quadrant are wound with at least two enameled wires, and each enameled wire is wound with different stator teeth.

In some embodiments, the stator assembly further includes a piercing terminal, the piercing terminal is detachably connected to the insulating frame, the piercing terminal is conductively connected between the PCB board and the enameled wire, or the piercing terminal is electrically connected to the terminals of different enameled wires In between, there are at least two pierced terminals, and the terminals of at least two enameled wires can be selectively conductively connected to the pierced terminals.

In some embodiments, the insulating frame is provided with a slot, the terminal of the enameled wire is set in the corresponding slot, the piercing terminal is inserted into the slot, and the corresponding enameled wire is fixed in the slot and connected to the enameled wire. The terminals are conductively connected.

In some embodiments, at least part of the piercing terminal is welded and fixed to the PCB board, or at least part of the piercing terminal is detachably conductively connected to the PCB board.

In some embodiments, the stator teeth in the same quadrant are wound with two enameled wires, one of the enameled wires includes terminals Yb1 and Yb2, the other enameled wire includes terminals Yb3 and Yb4, and the terminals Yb1 and Yb3 are arranged in the same quadrant. In one slot and fixed by one of the pierced terminals, the terminals Yb2 and Yb4 are set in the other slot and fixed by the other pierced terminal; or, the stator teeth in the same quadrant are wound with two enameled wires, One of the enameled wires includes terminals Yb1 and Yb2, and the other enameled wire includes terminals Yb3 and Yb4. The terminal Yb1 is fixed in the first slot and is fixed by the first pierced terminal. The terminals Yb2 and Yb3 are set at The second slot is fixed by the second pierced terminal, and the terminal Yb4 is arranged in the third slot and fixed by the third pierced terminal.

In some embodiments, the stator teeth in the same quadrant are wound with four enameled wires, where the first enameled wire includes terminals Yc1 and Yc2, the second enameled wire includes terminals Yc3 and Yc4, and the third enameled wire includes terminals. Yc5 and Yc6, the fourth enameled wire includes terminals Yc7 and Yc8, terminals Yc1, Yc3, Yc5 and Yc7 are set in the same slot and fixed by one of the pierced terminals, and terminals Yc2, Yc4, Yc6 and Yc8 are set In another slot and fixed by another pierced terminal; or, the stator teeth in the same quadrant are wound with four enameled wires, the first enameled wire includes terminals Yc1 and Yc2, and the second enameled wire includes terminals Yc3 and Yc4, the third enameled wire includes terminals Yc5 and Yc6, the fourth enameled wire includes terminals Yc7 and Yc8, terminal Yc1 is fixed in the first slot and fixed by the first pierced terminal, terminal Yc2 And Yc3 are set in the second slot and fixed by the second pierced terminal, the terminals Yc4 and Yc5 are set in the third slot and fixed by the third pierced terminal, and the terminals Yc6 and Yc7 are set in The fourth slot is fixed by the fourth pierced terminal, and the terminal Yc8 is arranged in the fifth slot and fixed by the fifth pierced terminal.

In some embodiments, the number of PCB boards is multiple, multiple PCB boards can be selectively connected to the insulating frame, and the wiring structure on each PCB board is different.

In some embodiments, the stator teeth in the same quadrant are wound with four enameled wires, where the first enameled wire includes terminals Yc1 and Yc2, the second enameled wire includes terminals Yc3 and Yc4, and the third enameled wire includes terminals. Yc5 and Yc6, the fourth enameled wire includes terminals Yc7 and Yc8, the PCB board includes a connection point Y1 that is conductively connected to terminal Yc1, a connection point Y2 that is conductively connected to terminal Yc2, and a connection point Y3 that is conductively connected to terminal Yc3 , The connection point Y4 conductively connected to the terminal Yc4, the connection point Y5 conductively connected to the terminal Yc5, the connection point Y6 conductively connected to the terminal Yc6, the connection point Y7 conductively connected to the terminal Yc7, and the terminal Yc8 The connection point Y8 of conductive connection, the PCB board includes three, of which the connection point Y2 of the first PCB board is conductively connected to the connection point Y3, the connection point Y4 is conductively connected to the connection point Y5, and the connection point Y6 is conductively connected to the connection point Y7. The connection points Y1, Y3, Y4 of the second PCB board are conductively connected to the connection point Y7, the connection points Y2, Y4, Y6 are conductively connected to the connection point Y8, and the connection point Y1 of the third PCB board is conductively connected to the connection point Y5. The connection point Y6 is conductively connected to the connection point Y7, the connection point Y2 is conductively connected to the connection point Y3, the connection point Y4 is conductively connected to the connection point Y8, and the three PCB boards can be selectively connected to the insulating frame.

In some embodiments, the stator assembly further includes a piercing terminal, the coil winding includes an enameled wire, the piercing terminal is detachably connected to the insulating frame, the piercing terminal is conductively connected between the PCB board and the enameled wire, or the piercing terminal is electrically connected to Between terminals of different enameled wires.

In some embodiments, the pierced terminal includes a male terminal and a female terminal. The male terminal includes a pierced end that is mated with the insulating frame and a plug-in end that is mated with the PCB board. The female terminal includes a plug-in mated with the insulating frame. The female terminal is located on the side of the PCB board close to the insulating frame, and is spaced from the PCB board to achieve insulation between the female terminal and the PCB board.

In some embodiments, the piercing ends of the male terminal and the female terminal are both provided with a piercing slot that matches the enameled wire of the coil winding.

According to another aspect of the present application, there is provided a wiring adjustment method of the above-mentioned stator assembly, including:

Determine the wiring method of the stator assembly;

The connection relationship between the enameled wire and the pierced terminal is adjusted according to the wiring mode of the stator assembly, and the connection position of the enameled wire is adjusted by pulling out and inserting the pierced terminal.

In some embodiments, when the stator teeth in the same quadrant are wound with two enameled wires, the connection relationship between the enameled wire and the pierced terminal is adjusted according to the wiring mode of the stator assembly, and the pierced terminal is pulled out and inserted. The steps to adjust the connection position of the enameled wire include:

When the stator assembly is connected in series, the terminal Yb1 is set in the first slot, and the first pierced terminal connects the terminal Yb1 with the PCB in the slot;

Set the terminals Yb2 and Yb3 in the second slot, and electrically connect the terminals Yb2 and Yb3 in the slot by the second pierced terminal, and the second pierced terminal is insulated from the PCB board;

Set the terminal Yb4 in the third slot, and the third pierced terminal will electrically connect the terminal Yb4 and the PCB in the slot: and/or,

When the stator assembly is connected in parallel, the terminals Yb1 and Yb3 are set in the first slot, and the first pierced terminal will electrically connect the terminals Yb1 and Yb3 with the PCB board in the slot;

The terminals Yb2 and Yb4 are arranged in the second slot, and the second pierced terminal connects the terminals Yb2 and Yb4 with the PCB board in the slot.

In some embodiments, when the stator teeth in the same quadrant are wound with four enameled wires, the connection relationship between the enameled wire and the pierced terminal is adjusted according to the wiring mode of the stator assembly, and the pierced terminal is pulled out and inserted. The steps to adjust the connection position of the enameled wire include:

When the stator assembly is connected in series, set the terminal Yc1 in the first slot, and the first pierced terminal will electrically connect the terminal Yc1 and the PCB in the slot;

Set the terminals Yc2 and Yc3 in the second slot, and electrically connect the terminals Yc2 and Yc3 in the slot by the second pierced terminal, and the second pierced terminal is insulated from the PCB board;

Set the terminals Yc4 and Yc5 in the third slot, and electrically connect the terminals Yc4 and Yc5 in the slot by the third pierced terminal, and the third pierced terminal is insulated from the PCB board;

Set the terminals Yc6 and Yc7 in the fourth slot, and electrically connect the terminals Yc6 and Yc7 in the slot by the fourth pierced terminal, and the fourth pierced terminal is insulated from the PCB board;

The terminal Yc8 is arranged in the fifth slot, and the fifth pierced terminal electrically connects the terminal Yc8 and the PCB board in the slot; and/or,

When the stator assembly is connected in parallel, the terminals Yc1, Yc3, Yc5, and Yc7 are set in the first slot, and the first pierced terminal connects the terminals Yc1, Yc3, Yc5 in the slot. , Yc7 and PCB board conductive connection;

The terminals Yc2, Yc4, Yc6, and Yc8 are arranged in the second slot, and the second pierced terminal connects the terminals Yc2, Yc4, Yc6, Yc8 and the PCB board in the slot.

Determine the wiring method of the stator assembly;

Replace the corresponding PCB board according to the wiring mode of the stator assembly, and conduct a conductive connection between the selected PCB board and the corresponding terminal of the enameled wire of the coil winding.

In some embodiments, replacing the corresponding PCB board according to the wiring mode of the stator assembly, and electrically connecting the selected PCB board with the corresponding terminal of the enameled wire of the coil winding includes:

When the stator assembly is connected in series, replace the PCB board with the first PCB board, and electrically connect the terminal of the enameled wire with the corresponding connection point on the PCB, where the connection point Y2 of the first PCB board is connected to the connection point Y3 is conductively connected, connection point Y4 is conductively connected to connection point Y5, and connection point Y6 is conductively connected to connection point Y7;

When the stator assembly is connected in parallel, replace the PCB board with the second PCB board, and electrically connect the terminals of the enameled wire with the corresponding connection points on the PCB. The connection points Y1, Y3, and Y3 of the second PCB board are electrically connected. Y4 is conductively connected to connection point Y7, and connection points Y2, Y4, Y6 are conductively connected to connection point Y8;

When the stator assembly is connected in series and parallel, replace the PCB board with a third PCB board, and electrically connect the terminal of the enameled wire with the corresponding connection point on the PCB. The connection point Y1 of the third PCB board is connected to the The connection point Y5 is conductively connected, the connection point Y6 is conductively connected to the connection point Y7, the connection point Y2 is conductively connected to the connection point Y3, and the connection point Y4 is conductively connected to the connection point Y8.

According to another aspect of the present application, there is provided a magnetic suspension bearing, including a stator assembly, which is the aforementioned stator assembly.

The stator assembly provided by this application includes a stator iron core, an insulating frame, coil windings and a PCB board. The stator iron core includes stator teeth, the insulating frame is sleeved outside the stator teeth, the coil winding is wound on the insulating frame, and the PCB board is arranged on On the insulating skeleton, the routing path of the coil winding can be adjusted. Because the wiring path of the coil winding terminal of the stator assembly can be adjusted, the wiring path of the coil winding terminal can be adjusted as needed, thereby realizing the adjustment of the bearing stator resistance and inductance. There is no need to change the coil winding method. The structure of the stator assembly is greatly adjusted, which has good applicability and low implementation cost.

Description of the drawings

Fig. 1 is a three-dimensional structural diagram of a stator assembly according to an embodiment of the application;

Fig. 2 is a three-dimensional structural diagram of an insulating frame of a stator assembly according to an embodiment of the application;

FIG. 3 is a three-dimensional structure diagram of a transfer assembly of a stator assembly according to an embodiment of the application;

4 is a three-dimensional structural diagram of a male terminal of a stator assembly according to an embodiment of the application;

FIG. 5 is a three-dimensional structure diagram of a female terminal of a stator assembly according to an embodiment of the application;

6 is a schematic diagram of the first wiring structure of the stator assembly according to the embodiment of the application;

FIG. 7 is a schematic diagram of a second wiring structure of a stator assembly according to an embodiment of the application;

FIG. 8 is a schematic diagram of the structure of the first PCB board of the stator assembly according to the embodiment of the application;

FIG. 9 is a schematic structural diagram of a second PCB board of a stator assembly according to an embodiment of the application;

FIG. 10 is a schematic structural diagram of a third PCB board of the stator assembly according to an embodiment of the application.

Detailed ways

With reference to Figures 1 to 10, according to the embodiments of the present application, the stator assembly includes a stator core 1, an insulating frame 2, a coil winding 3, and a PCB board 4. The stator core 1 includes

stator teeth

11 and 2 sets of insulating frames. It is arranged outside the stator teeth 11, the coil winding 3 is wound on the insulating frame 2, and the PCB board 4 is arranged on the insulating frame 2, and the routing path of the coil winding 3 can be adjusted.

Since the wiring path of the terminal of the coil winding 3 can be adjusted in the stator assembly, the wiring path of the terminal of the coil winding 3 can be adjusted as needed, thereby realizing the adjustment of the bearing stator resistance and inductance without changing the coil winding method , There is no need to greatly adjust the structure of the stator assembly, the applicability is good, and the implementation cost is low.

The stator assembly also includes an adapter male 13 and an adapter assembly 14. The insulating frame 2, the PCB board 4, the adapter male seat 13, and the adapter assembly 14 play the role of an adapter cable, and the insulating frame 2 plays a role in the PCB board 4. For supporting function, the PCB board 4 is provided with a copper coating, which functions as a wire, and the transfer male 13 and the transfer assembly 14 function as a transfer between the PCB board 4 and the controller.

In some embodiments, the PCB board 4 is detachably connected to the insulating frame 2. When the PCB board 4 is detachably connected to the insulating frame 2, you can remove the PCB board 4 from the insulating frame 2 when the wiring path of the coil winding 3 needs to be adjusted, and then move the coil winding 3 The line path is adjusted. After the adjustment is completed, the PCB board 4 is fixed on the insulating frame 2 again to complete the installation and fixing of the PCB board 4. The PCB board 4 can also form a non-detachable fixed connection with the insulating skeleton 2. In this case, if the wiring mode of the stator assembly is to be adjusted, it is necessary to adjust the wiring adjustment of the PCB board 4.

In one of the embodiments, in a section perpendicular to the central axis of the stator core 1, the stator teeth 11 located in the same quadrant are wound with at least two enameled wires, and each enameled wire is wound with a different stator tooth 11. Generally speaking, for a radial magnetic bearing, the magnetic force adjustment in four directions is mainly performed, so that the radial magnetic bearing can adjust the part to be adjusted (such as the main shaft) on it at a suitable radial position to ensure Adjust the accuracy and precision of the position. Based on this, the coils located in the four directions for magnetic adjustment can be divided into four quadrants, and the coil winding and wiring methods in each quadrant are the same, so as to ensure the effectiveness of the radial adjustment of the radial magnetic suspension bearing. The adjustment of the routing path of the coil winding 3 in each quadrant is the same, so as to ensure the consistency of the resistance, inductance and magnetic circuit adjustment in the four quadrants. For ease of description, when describing the embodiments in this application, only the adjustment of the wiring mode of the coil winding 3 in one quadrant is described, and the adjustment of the wiring mode of the coil winding 3 in the other quadrants can be deduced by analogy. The four quadrants respectively correspond to the four parts that the entire circumference of the stator core 1 is equally divided into.

The stator teeth 11 located in the same quadrant are wound with at least two enameled wires, which can provide more possibilities for the adjustment of the resistance and inductance of the coil winding 3. The connection state of the enameled wire is adjusted, and then the inductance and resistance can be adjusted by changing the series-parallel connection of the two enameled wires. The adjustment is simpler, more convenient, and easier to implement.

The stator assembly also includes a piercing terminal, which is detachably connected to the insulating frame 2, and the piercing terminal is electrically connected between the PCB board 4 and the enameled wire, or the piercing terminal is electrically connected between the terminals of different enameled wires.

There are at least two pierced terminals, and the terminals of at least two enameled wires can be selectively electrically connected to the pierced terminals. The pierced terminal mainly serves as a transfer function between the coil winding 3 and the PCB board 4.

In order to facilitate the detachable connection between the piercing terminal and the insulating frame 2, the insulating frame 2 is provided with a slot 5, the terminal of the enameled wire is set in the corresponding slot 5, and the piercing terminal is inserted into the slot 5. , Fix the corresponding enameled wire in the slot 5 and conduct conductive connection with the terminal of the enameled wire.

The insulating frame 2 includes a frame body and a boss 15. The boss 15 is arranged on the side of the frame body facing the PCB board 4, and the slot 5 is arranged on the boss 15. Since the boss 15 protrudes from the end surface of the frame body, it is more It is convenient to attach the PCB board 4 to the insulating frame 2 to realize the installation and fixation of the PCB board 4 on the insulating frame 2. In order to make it more convenient to fix the PCB board 4 on the insulating frame 2, a mounting hole 12 is provided on the boss 15 of the insulating frame 2. The mounting hole 12 is a screw hole, and the PCB board 4 is also provided with a connecting hole, screw After passing through the connecting hole, it is fixed on the mounting hole 12, and the PCB board 4 is detachably fixed on the insulating frame 2.

The pierced terminal includes a male terminal 6 and a female terminal 7. The male terminal 6 includes a pierced end 9 that is mated with the insulating frame 2 and a plug-in end 8 mated with the PCB board 4, and the female terminal 7 includes an insulating frame 2 The pierced end 9 is inserted into the mating, and the female terminal 7 is located on the side of the PCB board 4 close to the insulating frame 2 and is spaced apart from the PCB board 4.

In this embodiment, the function of the male terminal 6 is to realize the conductive connection between the terminals of the enameled wire and the PCB board 4, and the function of the female terminal 7 is to realize the conductive connection between the terminals of the enameled wire, and the female terminal 7 is connected to the PCB board. There is no conductive connection between 4, therefore, the height of the female terminal 7 should be designed to be smaller than that of the male terminal 6. For this application, compared to the male terminal 6, the female terminal 7 omits the plug that connects to the PCB board 4. Terminal 8, so that a certain gap can be left between the female terminal 7 and the PCB board 4. While the insulation between the female terminal 7 and the PCB board 4 is achieved, there is no need to open a bypass hole on the PCB board 4, nor Interference is caused during the installation of the PCB board 4.

The pierced ends 9 of the male terminal 6 and the female terminal 7 are both provided with a piercing slot 10 that matches with the enameled wire of the coil winding 3, which can limit the coordination of the enameled wire and the pierced terminal to ensure the gap between the pierced terminal and the enameled wire The piercing conductive effect of the piercing terminal can pierce the surface of the enameled wire during the process of inserting the piercing terminal into the slot 5 to realize the connection between the piercing terminal and the enameled wire. The pierced terminal is tightly matched with the slot 5 to realize the installation and fixation of the pierced terminal on the insulating frame 2. Specifically, the slot 5 includes a first slot portion and a second slot portion, the first slot portion and the second slot portion perpendicularly intersect to form a cross shape, the terminal of the enameled wire is located in the first slot portion, and the pierced terminal is inserted into the second slot. Part, and tightly fit with the second groove part. The first groove portion extends longitudinally in FIG. 2 and has a longer length. The second groove portion extends laterally in FIG. 2 and has a relatively short length.

At least part of the pierced terminal is welded and fixed to the PCB board 4, or at least part of the pierced terminal is detachably connected to the PCB board 4 in a conductive manner. When the piercing terminal includes a male terminal 6 and a female terminal 7, the above-mentioned piercing terminals that form a conductive connection with the PCB board 4 are all the male terminals 6.

For the pierced terminal, since it only needs to be detachably plugged with the insulating frame 2, so that the terminals of the enameled wire can be selectively placed in different slots 5, thereby realizing different enameled wire routing methods Therefore, the connection relationship between the pierced terminal and the PCB board 4 does not affect the adjustment of the wiring mode of the enameled wire, and the connection relationship between the pierced terminal and the PCB board 4 can be selected as required.

In one of the embodiments, the stator teeth 11 located in the same quadrant are wound with two enameled wires, one of the enameled wires includes terminals Yb1 and Yb2, the other enameled wire includes terminals Yb3 and Yb4, and terminals Yb1 and Yb3 are provided In the same slot 5 and fixed by one of the pierced terminals, the terminals Yb2 and Yb4 are arranged in the other slot 5 and fixed by the other pierced terminal. This connection mode can realize the parallel arrangement of two enameled wires. In this case, the two pierced terminals are both male terminals 6.

In one of the embodiments, the stator teeth 11 located in the same quadrant are wound with two enameled wires, one of the enameled wires includes terminals Yb1 and Yb2, and the other enameled wire includes terminals Yb3 and Yb4, and the terminal Yb1 is fixed on the first One slot 5 is fixed by the first pierced terminal, the terminals Yb2 and Yb3 are arranged in the second slot 5 and fixed by the second pierced terminal, and the terminal Yb4 is arranged in the third slot 5 and fixed by the third pierced terminal. This connection mode can realize the serial arrangement of two enameled wires. In this case, the first pierced terminal and the third pierced terminal are the male terminal 6, and the second pierced terminal is the female terminal 7.

In one of the embodiments, the stator teeth 11 located in the same quadrant are wound with four enameled wires. The first enameled wire includes terminals Yc1 and Yc2, the second enameled wire includes terminals Yc3 and Yc4, and the third enameled wire includes terminals Yc3 and Yc4. Terminals Yc5 and Yc6, the fourth enameled wire includes terminals Yc7 and Yc8, terminals Yc1, Yc3, Yc5 and Yc7 are set in the same slot 5 and fixed by one of the pierced terminals, terminals Yc2, Yc4, Yc6 Yc8 and Yc8 are arranged in another slot 5 and fixed by another piercing terminal. This connection mode can realize the parallel setting of four enameled wires. In this case, the two pierced terminals are both male terminals 6.

The stator teeth 11 in the same quadrant are wound with four enameled wires. The first enameled wire includes terminals Yc1 and Yc2, the second enameled wire includes terminals Yc3 and Yc4, and the third enameled wire includes terminals Yc5 and Yc6. The four enameled wires include terminals Yc7 and Yc8. The terminal Yc1 is fixed in the first slot 5 and is fixed by the first pierced terminal. The terminals Yc2 and Yc3 are arranged in the second slot 5 and are fixed by the second slot. Two pierced terminals are fixed, the terminals Yc4 and Yc5 are arranged in the third slot 5 and are fixed by the third pierced terminal, and the terminals Yc6 and Yc7 are arranged in the fourth slot 5 and are fixed by the fourth slot. The broken terminal is fixed, and the terminal Yc8 is arranged in the fifth slot 5 and fixed by the fifth broken terminal. This connection mode can realize the serial arrangement of four enameled wires. In this case, the first pierced terminal and the fifth pierced terminal are male terminals 6, and the second to fourth pierced terminals are female terminals 7.

In the above-mentioned several embodiments, the adjustment of the connection mode of the coil winding 3 is mainly achieved by adjusting the connection position of the terminal of the enameled wire.

In another embodiment, there are multiple PCB boards 4, and multiple PCB boards 4 can be selectively connected to the insulating frame 2, and the wiring structure on each PCB board 4 is different. In this embodiment, the specifications of the multiple PCB boards 4 are the same, but the wiring methods on them are different. Therefore, the wiring of the coil winding 3 can be realized by replacing the different PCB boards 4 and the coil winding 3 to cooperate with each other. Mode of adjustment.

In one of the embodiments, the stator teeth 11 located in the same quadrant are wound with four enameled wires. The first enameled wire includes terminals Yc1 and Yc2, the second enameled wire includes terminals Yc3 and Yc4, and the third enameled wire includes terminals Yc3 and Yc4. Terminals Yc5 and Yc6, the fourth enameled wire includes terminals Yc7 and Yc8, PCB board 4 includes a connection point Y1 that is conductively connected to terminal Yc1, a connection point Y2 that is conductively connected to terminal Yc2, and is conductively connected to terminal Yc3 Connection point Y3, connection point Y4 conductively connected to terminal Yc4, connection point Y5 conductively connected to terminal Yc5, connection point Y6 conductively connected to terminal Yc6, connection point Y7 conductively connected to terminal Yc7, and The connection point Y8 of the conductive connection of the terminal Yc8, the PCB board 4 includes three, of which the connection point Y2 of the first PCB board 4 is conductively connected to the connection point Y3, the connection point Y4 is conductively connected to the connection point Y5, and the connection point Y6 is connected to the connection. Point Y7 is conductively connected, the connection points Y1, Y3, Y4 of the second PCB board 4 are conductively connected to the connection point Y7, the connection points Y2, Y4, Y6 are conductively connected to the connection point Y8, and the connection point Y1 of the third PCB board 4 Conductive connection with connection point Y5, connection point Y6 and connection point Y7 conductive connection, connection point Y2 and connection point Y3 conductive connection, connection point Y4 and connection point Y8 conductive connection, three PCB boards 4 can be selectively connected to the insulating frame 2 . In this embodiment, the first enameled wire and the second enameled wire are connected in series, the third enameled wire and the fourth enameled wire are connected in series, and then the first enameled wire and the second enameled wire are connected in series with the third enameled wire in series. The enameled wire and the fourth enameled wire are connected in parallel, so as to realize the serial and parallel wiring of the enameled wire.

In this embodiment, the piercing terminals used are all male terminals 6, and the male terminals 6 are used to realize the conductive connection between each terminal and the corresponding connection point. When you need to adjust the wiring of the coil winding 3, you only need to remove the PCB board 4 together with the male terminal 6 from the insulating frame 2, and then replace it with the required PCB board, and use the male terminal 6 to wind the coil 3 and the PCB board 4 can be electrically connected together, the adjustment method is simple and convenient, easy to implement, and the replacement cost is low.

When assembling the stator assembly, first install the two sides of the stator core 1 into the insulating frame 2, so that the insulating frame 2 completely enters the stator tooth slot, and the concave and convex parts of the two corresponding insulating frames 2 are buckled with each other; Then, each stator tooth 11 is wound in the radial direction. After the stator core 1 completes the frame assembly and radial winding, the winding end is placed at the slot 5 of the insulating frame 2, and then the side of the pierced terminal is inserted into the slot 5 reserved for the insulating frame. At this time, the pierced terminal will pierce the surface of the enameled copper wire and connect the pierced terminal with the enameled wire. Then connect the PCB board 4 to the insulating frame 2 by locking screws. At this time, the other side of the pierced terminal corresponds to the hole reserved for the PCB board 4. Determine the connection mode between each winding, and connect the pierced terminal to the The PCB board 4 is welded, and then the adapter male 13 is welded to the PCB board 4 to achieve the purpose of drawing out the radial bearing winding and complete the radial bearing stator production. The adapter assembly 14 functions to lead the radial bearing winding to the cylinder. Specifically, the barrel may be a casing of a compressor including a magnetic suspension bearing.

After the radial magnetic bearing is wired, it needs to be led out with the help of the adapter assembly 14. The adapter assembly 14 is mainly composed of an 8-pin female socket, an 8-pin adapter socket and a certain length of lead wire. When wiring, only need to match the 8-pin female socket with the 8-pin adapter male socket on the PCB board, and then connect the 8-pin adapter socket with the aviation plug on the cylinder. At this time, the coil wiring of the radial magnetic bearing has been led out to the cylinder. When working, you only need to connect the aviation plug to the controller.

According to an embodiment of the present application, a method for adjusting the wiring of the stator assembly described above includes: determining the wiring mode of the stator assembly; adjusting the connection relationship between the enameled wire and the pierced terminal according to the wiring mode of the stator assembly, by pulling out and inserting the puncture Adjust the connection position of the enameled wire by breaking the terminal.

When the stator teeth 11 in the same quadrant are wound with two enameled wires, the connection relationship between the enameled wire and the pierced terminal is adjusted according to the wiring mode of the stator assembly, and the connection position of the enameled wire is adjusted by pulling out and inserting the pierced terminal. The adjustment steps include: when the stator assembly is connected in series, the terminal Yb1 is set in the first slot 5, and the first pierced terminal connects the terminal Yb1 to the PCB in the slot 5. Conductive connection between the boards 4; the terminals Yb2 and Yb3 are arranged in the second slot 5, and the second pierced terminal connects the terminals Yb2 and Yb3 in the slot 5 conductively, and the second pierced The broken terminal is insulated from the PCB board 4; the terminal Yb4 is set in the third slot 5, and the third pierced terminal connects the terminal Yb4 with the PCB board 4 in the slot 5 in a conductive manner .

When the stator assembly is connected in parallel, the terminals Yb1 and Yb3 are set in the first slot 5, and the first pierced terminal connects the terminals Yb1, Yb3 and the PCB board 4 in the slot 5. Conductive connection; the terminals Yb2 and Yb4 are arranged in the second slot 5, and the terminals Yb2, Yb4 and the PCB board 4 are conductively connected in the slot 5 by the second pierced terminal.

When the stator teeth 11 in the same quadrant are wound with four enameled wires, the connection relationship between the enameled wire and the pierced terminal is adjusted according to the wiring mode of the stator assembly, and the connection position of the enameled wire is adjusted by pulling out and inserting the pierced terminal. The adjustment steps include: when the stator assembly is connected in series, the terminal Yc1 is set in the first slot 5, and the first pierced terminal connects the terminal Yc1 to the PCB in the slot 5. Conductive connection between the boards 4; the terminals Yc2 and Yc3 are arranged in the second slot 5, and the second pierced terminal connects the terminals Yc2 and Yc3 in the slot 5 conductively, and the second pierced The broken terminal is insulated from the PCB board 4; the terminals Yc4 and Yc5 are set in the third slot 5, and the third punctured terminal connects the terminals Yc4 and Yc5 in the slot 5. The three pierced terminals are insulated from the PCB board 4; the terminals Yc6 and Yc7 are arranged in the fourth slot 5, and the fourth pierced terminal conducts the terminals Yc6 and Yc7 in the slot 5 The fourth pierced terminal is insulated from the PCB board 4; the terminal Yc8 is set in the fifth slot 5, and the fifth pierced terminal connects the terminal Yc8 to the PCB in the slot 5. The plates 4 are electrically connected.

When the stator assembly is connected in parallel, the terminals Yc1, Yc3, Yc5, and Yc7 are set in the first slot 5, and the first pierced terminal connects the terminals Yc1, Yc3 in the slot 5. , Yc5, Yc7 and PCB board 4 are conductively connected; the terminals Yc2, Yc4, Yc6 and Yc8 are arranged in the second slot 5, and the second pierced terminal connects the terminals Yc2 and Yc2 in the slot 5. Yc4, Yc6, Yc8 and PCB board 4 are electrically connected.

According to an embodiment of the present application, a method for adjusting the wiring of the stator assembly described above includes: determining the wiring manner of the stator assembly; replacing the corresponding PCB board 4 according to the wiring manner of the stator assembly, and combining the selected PCB board 4 with the coil winding 3 The corresponding terminals of the enameled wire are conductively connected.

Replace the corresponding PCB board 4 according to the wiring mode of the stator assembly, and conduct the conductive connection between the selected PCB board 4 and the corresponding terminal of the enameled wire of the coil winding 3. 4 Replace with the first PCB board 4, and electrically connect the terminals of the enameled wire to the corresponding connection points on the PCB. The connection point Y2 of the first PCB board 4 is electrically connected to the connection point Y3, and the connection point Y4 is connected to the connection point. Y5 is conductively connected, and the connection point Y6 is conductively connected to the connection point Y7; when the stator assembly is connected in parallel, replace the PCB board 4 with the second PCB board 4, and connect the terminal of the enameled wire to the corresponding connection point on the PCB Conductive connection, where the connection points Y1, Y3, Y4 of the second PCB board 4 are conductively connected to the connection point Y7, and the connection points Y2, Y4, Y6 are conductively connected to the connection point Y8; when the stator assembly is connected in series and parallel connection , Replace the PCB board 4 with the third PCB board 4, and electrically connect the terminals of the enameled wire with the corresponding connection points on the PCB. The connection point Y1 of the third PCB board 4 is electrically connected to the connection point Y5. The connection point Y6 is conductively connected to connection point Y7, connection point Y2 is conductively connected to connection point Y3, and connection point Y4 is conductively connected to connection point Y8.

According to an embodiment of the present application, the magnetic suspension bearing includes a stator assembly, which is the aforementioned stator assembly.

It is easy for those skilled in the art to understand that, on the premise that there is no conflict, the above advantageous methods can be freely combined and superimposed.

The above are only preferred embodiments of this application and are not intended to limit this application. Any modification, equivalent replacement and improvement made within the spirit and principle of this application shall be included in the protection scope of this application. Inside. The above are only the preferred embodiments of this application. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principles of this application, several improvements and modifications can be made, and these improvements and modifications should also be made. Treated as the scope of protection of this application.

Claims

A stator assembly, characterized in that it comprises a stator core (1), an insulating framework (2), coil windings (3) and a PCB board (4), the stator core (1) includes stator teeth (11), The insulation framework (2) is sleeved outside the stator teeth (11), the coil winding (3) is wound on the insulation framework (2), and the PCB board (4) is arranged on the insulation On the bobbin (2), the routing path of the coil winding (3) can be adjusted.
The stator assembly according to claim 1, wherein the PCB board (4) is detachably connected to the insulating frame (2).
The stator assembly according to claim 2, characterized in that, in a section perpendicular to the central axis of the stator core (1), the stator teeth (11) located in the same quadrant are wound with at least two enameled wires The stator teeth (11) wound by each enameled wire are different.
The stator assembly according to claim 3, wherein the stator assembly further comprises a pierced terminal, the pierced terminal is detachably connected to the insulating frame (2), and the pierced terminal is conductively connected to the insulating frame (2). Between the PCB board (4) and the enameled wire, or the piercing terminal is electrically connected between the terminals of different enameled wires, the number of piercing terminals is at least two, and the at least two enameled wires are The terminal can be selectively conductively connected with the piercing terminal.
The stator assembly according to claim 4, characterized in that the insulating frame (2) is provided with a slot (5), and the terminal of the enameled wire is arranged in the corresponding slot (5), so The piercing terminal is inserted into the slot (5), the corresponding enameled wire is fixed in the slot (5), and is conductively connected to the terminal of the enameled wire.
The stator assembly according to claim 5, characterized in that at least part of the pierced terminal and the PCB board (4) are welded and fixed, or at least part of the pierced terminal and the PCB board (4) can be Remove the ground conductive connection.
The stator assembly according to claim 5 or 6, characterized in that the stator teeth (11) located in the same quadrant are wound with two enameled wires, one of the enameled wires includes terminals Yb1 and Yb2, and the other enameled wire It includes terminals Yb3 and Yb4. The terminals Yb1 and Yb3 are arranged in the same slot (5) and are fixed by one of the pierced terminals. The terminals Yb2 and Yb4 are arranged in the other slot (5) and are fixed by The other pierced terminal is fixed; or, the stator teeth (11) located in the same quadrant are wound with two enameled wires, one of the enameled wires includes terminals Yb1 and Yb2, and the other enameled wire includes terminals Yb3 and Yb4, The terminal Yb1 is fixed in the first slot (5) and is fixed by the first pierced terminal, and the terminals Yb2 and Yb3 are arranged in the second slot (5) and are fixed by the second pierced terminal, The terminal Yb4 is arranged in the third socket (5) and is fixed by the third pierced terminal.
The stator assembly according to claim 5 or 6, characterized in that the stator teeth (11) located in the same quadrant are wound with four enameled wires, wherein the first enameled wire includes terminals Yc1 and Yc2, and the second one The enameled wire includes terminals Yc3 and Yc4, the third enameled wire includes terminals Yc5 and Yc6, the fourth enameled wire includes terminals Yc7 and Yc8, and the terminals Yc1, Yc3, Yc5 and Yc7 are arranged in the same slot (5) Inside and fixed by one of the pierced terminals, the terminals Yc2, Yc4, Yc6 and Yc8 are arranged in the other slot (5) and fixed by the other pierced terminal; or, the stator teeth (11) located in the same quadrant ) Four enameled wires are used for winding. The first enameled wire includes terminals Yc1 and Yc2, the second enameled wire includes terminals Yc3 and Yc4, the third enameled wire includes terminals Yc5 and Yc6, and the fourth enameled wire includes terminals Yc7 and Yc8, the terminal Yc1 is fixed in the first slot (5) and is fixed by the first pierced terminal, and the terminals Yc2 and Yc3 are arranged in the second slot (5) and are pierced by the second The broken terminal is fixed, the terminals Yc4 and Yc5 are set in the third slot (5) and are fixed by the third pierced terminal, and the terminals Yc6 and Yc7 are set in the fourth slot (5) and are fixed by the fourth slot (5). One pierced terminal is fixed, and the terminal Yc8 is arranged in the fifth slot (5) and is fixed by the fifth pierced terminal.
The stator assembly according to any one of claims 3 to 6, characterized in that there are multiple PCB boards (4), and multiple PCB boards (4) can be selectively connected to the insulation On the skeleton (2), the wiring structure on each PCB board (4) is different.
The stator assembly according to claim 9, wherein the stator teeth (11) located in the same quadrant are wound with four enameled wires, wherein the first enameled wire includes terminals Yc1 and Yc2, and the second enameled wire includes Terminals Yc3 and Yc4, the third enameled wire includes terminals Yc5 and Yc6, the fourth enameled wire includes terminals Yc7 and Yc8, the PCB board (4) includes a connection point Y1 electrically connected to the terminal Yc1, and the terminal Yc2 conductive connection point Y2, conductive connection point Y3 connected to terminal Yc3, connection point Y4 conductive connection to terminal Yc4, connection point Y5 conductive connection to terminal Yc5, connection point conductive connection to terminal Yc6 Y6, the connection point Y7 that is conductively connected to the terminal Yc7, and the connection point Y8 that is conductively connected to the terminal Yc8, the PCB board (4) includes three, of which the connection point Y2 of the first PCB board (4) is connected to The connection point Y3 is conductively connected, the connection point Y4 is conductively connected to the connection point Y5, the connection point Y6 is conductively connected to the connection point Y7, and the connection points Y1, Y3, Y4 of the second PCB board (4) are conductively connected to the connection point Y7, wiring Points Y2, Y4, Y6 are conductively connected to connection point Y8, connection point Y1 of the third PCB board (4) is conductively connected to connection point Y5, connection point Y6 is conductively connected to connection point Y7, and connection point Y2 is conductive to connection point Y3 Connection, the connection point Y4 and the connection point Y8 are conductively connected, and the three PCB boards (4) can be selectively connected with the insulating frame (2).
The stator assembly according to claim 1, wherein the stator assembly further comprises a pierced terminal, the coil winding (3) comprises enameled wire, and the pierced terminal is detachably connected to the insulating frame (2) The piercing terminal is electrically connected between the PCB board (4) and the enameled wire, or the piercing terminal is electrically connected between the terminals of different enameled wires.
The stator assembly according to claim 11, wherein the piercing terminal includes a male terminal (6) and a female terminal (7), and the male terminal (6) includes a plug-in connection with the insulating frame (2). The mating piercing end (9) and the plug-in end (8) mated with the PCB board (4), and the female terminal (7) includes a piercing mated with the insulating frame (2) At the end (9), the female terminal (7) is located on the side of the PCB board (4) close to the insulating frame (2), and is spaced apart from the PCB board (4) to realize the female terminal ( 7) Insulation with the PCB board (4).
The stator assembly according to claim 12, characterized in that the pierced end (9) of the male terminal (6) and the female terminal (7) are both provided with phases with the enameled wire of the coil winding (3). Matching puncture slot (10).
A method for adjusting the wiring of a stator assembly according to any one of claims 4 to 8, characterized in that it comprises:

Determine the wiring method of the stator assembly;

The connection relationship between the enameled wire and the pierced terminal is adjusted according to the wiring mode of the stator assembly, and the connection position of the enameled wire is adjusted by pulling out and inserting the pierced terminal.
The wiring adjustment method of the stator assembly according to claim 14, characterized in that, when the stator teeth (11) located in the same quadrant are wound with two enameled wires, the enameled wire and puncture are performed according to the wiring mode of the stator assembly. The connection relationship of the terminals is adjusted. The steps of adjusting the connection position of the enameled wire by pulling out and inserting the punctured terminal include:

When the stator assembly is connected in series, the terminal Yb1 is set in the first slot (5), and the first pierced terminal connects the terminal Yb1 with the PCB board ( 4) Conductive connection between;

Set the terminals Yb2 and Yb3 in the second slot (5), and connect the terminals Yb2 and Yb3 conductively in the slot (5) by the second pierced terminal, and the second pierced terminal is connected to the Insulation between PCB boards (4);

Set the terminal Yb4 in the third slot (5), and electrically connect the terminal Yb4 with the PCB board (4) in the slot (5) by the third pierced terminal: and/or ,

When the stator assembly is connected in parallel, the terminals Yb1 and Yb3 are set in the first slot (5), and the first pierced terminal connects the terminals Yb1 and Yb3 in the slot (5). Conductive connection with PCB board (4);

The terminals Yb2 and Yb4 are arranged in the second slot (5), and the second pierced terminal connects the terminals Yb2, Yb4 and the PCB board (4) in the slot (5).
The wiring adjustment method of the stator assembly according to claim 14, characterized in that, when the stator teeth (11) located in the same quadrant are wound with four enameled wires, the enameled wire and puncture are performed according to the wiring mode of the stator assembly. The connection relationship of the terminals is adjusted. The steps of adjusting the connection position of the enameled wire by pulling out and inserting the punctured terminal include:

When the stator assembly is connected in series, the terminal Yc1 is set in the first slot (5), and the first pierced terminal connects the terminal Yc1 with the PCB board ( 4) Conductive connection between;

Set the terminals Yc2 and Yc3 in the second slot (5), and the second pierced terminal will electrically connect the terminals Yc2 and Yc3 in the slot (5), the second pierced terminal and Insulation between PCB boards (4);

Set the terminals Yc4 and Yc5 in the third socket (5), and connect the terminals Yc4 and Yc5 conductively in the socket (5) by the third pierced terminal, and the third pierced terminal is connected to the Insulation between PCB boards (4);

Set the terminals Yc6 and Yc7 in the fourth slot (5), and connect the terminals Yc6 and Yc7 conductively in the slot (5) by the fourth pierced terminal, and the fourth pierced terminal is connected to the Insulation between PCB boards (4);

The terminal Yc8 is arranged in the fifth slot (5), and the fifth pierced terminal electrically connects the terminal Yc8 and the PCB board (4) in the slot (5); and/or ,

When the stator assembly is connected in parallel, set the terminals Yc1, Yc3, Yc5 and Yc7 in the first slot (5), and the first pierced terminal will connect the wires in the slot (5) The terminals Yc1, Yc3, Yc5, Yc7 and the PCB board (4) are electrically connected;

Set the terminals Yc2, Yc4, Yc6 and Yc8 in the second slot (5), and connect the terminals Yc2, Yc4, Yc6, Yc8 and PCB in the slot (5) by the second pierced terminal The board (4) is electrically conductively connected.
A method for adjusting the wiring of a stator assembly according to claim 9 or 10, characterized in that it comprises:

Determine the wiring method of the stator assembly;

The corresponding PCB board (4) is replaced according to the wiring mode of the stator assembly, and the selected PCB board (4) is electrically connected with the corresponding terminal of the enameled wire of the coil winding (3).
The wiring adjustment method of the stator assembly according to claim 17, characterized in that the corresponding PCB board (4) is replaced according to the wiring mode of the stator assembly, and the selected PCB board (4) and the enameled wire of the coil winding (3) are replaced The steps for conducting a conductive connection on the corresponding terminal include:

When the stator assembly is connected in series, replace the PCB board (4) with the first PCB board (4), and electrically connect the terminals of the enameled wire with the corresponding connection points on the PCB, where the first PCB board ( 4) The connection point Y2 is conductively connected to the connection point Y3, the connection point Y4 is conductively connected to the connection point Y5, and the connection point Y6 is conductively connected to the connection point Y7;

When the stator assembly is connected in parallel, replace the PCB board (4) with the second PCB board (4), and electrically connect the terminals of the enameled wire with the corresponding connection points on the PCB, where the second PCB board ( 4) The connection points Y1, Y3, Y4 are conductively connected to the connection point Y7, and the connection points Y2, Y4, Y6 are conductively connected to the connection point Y8;

When the stator assembly is connected in series and parallel, replace the PCB board (4) with the third PCB board (4), and electrically connect the terminal of the enameled wire with the corresponding connection point on the PCB, where the third PCB The connection point Y1 of the board (4) is conductively connected to the connection point Y5, the connection point Y6 is conductively connected to the connection point Y7, the connection point Y2 is conductively connected to the connection point Y3, and the connection point Y4 is conductively connected to the connection point Y8.
A magnetic suspension bearing comprising a stator assembly, wherein the stator assembly is the stator assembly according to any one of claims 1 to 13.