CN113991896B

CN113991896B - Switched Reluctance Motor

Info

Publication number: CN113991896B
Application number: CN202111227263.2A
Authority: CN
Inventors: 杨华; 李保昌; 张涛
Original assignee: Guangdong Chunmi Electrical Technology Co Ltd
Current assignee: Guangdong Chunmi Electrical Technology Co Ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2023-09-01
Anticipated expiration: 2041-10-21
Also published as: CN113991896A

Abstract

The embodiment of the invention discloses a switched reluctance motor, and relates to the field of driving equipment. The switched reluctance motor includes a housing, a rotor assembly, and a stator mechanism. The stator mechanism comprises a plurality of stator poles, the coil is arranged on the stator poles through the insulating piece, and the coil can be wound on the insulating piece in advance and can be installed on the stator poles together with the insulating piece, so that the complexity of the production process of the switch reluctance motor can be reduced, the requirement on winding equipment is reduced, the production efficiency is improved, and the fault rate of turn-to-turn short circuit of the coil is reduced. The mounting protrusion is arranged on the insulating part and is at least partially accommodated in the mounting groove, the circumferential dimension of the stator pole is not increased due to the formation of the mounting groove, the mounting protrusion can be abutted against the stator pole only by small deformation along the inserting direction perpendicular to the stator pole, and the mounting protrusion can slide into the mounting groove along with the movement of the insulating part, so that the insulating part can be prevented from being excessively deformed in the mounting process of the insulating part and the stator pole, and further, the magnetic field precision formed subsequently is prevented from being influenced by the change of the winding position of the coil.

Description

Switched reluctance motor

Technical Field

The invention relates to the field of driving equipment, in particular to a switch reluctance motor.

Background

An insulation structure is arranged in the existing switch reluctance motor to ensure insulation between the iron core and the coil, and the insulation structure is a split structure comprising two parts and is integrally formed after being installed on the iron core. Therefore, before the coil is installed, the insulating structure is installed on the iron core, and then the coil is wound on the insulating structure, so that the production process is relatively complex, the requirement on winding equipment is high, the production efficiency is low, and the turn-to-turn short circuit fault rate of the coil is high. When the coil and the insulation structure are integrally mounted on the iron core, the insulation structure needs to be greatly deformed in the process of mounting the insulation structure and the iron core to realize clamping and fixing with the iron core, and the deformation easily changes the winding position of the coil to influence the magnetic field precision formed subsequently.

Disclosure of Invention

Based on the above, it is necessary to provide a switched reluctance motor, which aims to solve the technical problems of complex production process and poor magnetic field precision of the existing switched reluctance motor.

In order to solve the technical problems, the invention adopts the following technical scheme:

a switched reluctance motor comprising:

a housing;

a rotor assembly rotatably coupled to the housing; a kind of electronic device with high-pressure air-conditioning system

The stator mechanism is arranged on the shell and comprises a plurality of stator poles, the stator poles are distributed around the rotor assembly, the stator mechanism further comprises a plurality of coils, the coils are arranged on the stator poles in a one-to-one correspondence mode through insulating pieces, the insulating pieces are used for electrically isolating the stator poles from the coils, installation spaces are formed in the insulating pieces, the stator poles are inserted into the installation spaces, installation grooves are formed in the stator poles, a certain included angle is formed between the extending direction of the installation grooves and the inserting direction of the stator poles, and installation protrusions are arranged on the insulating pieces and located in the installation spaces and at least partially contained in the installation grooves so as to enable the insulating pieces to be in clamping connection with the stator poles.

In some embodiments of the switched reluctance motor, the insulating member includes a circumferential wall, a first extension portion and a second extension portion, the circumferential wall, the first extension portion and the second extension portion are all disposed around the installation space, the first extension portion and the second extension portion are respectively located at two ends of the circumferential wall opposite to each other along the insertion direction, and extend to a side away from the circumferential wall, so as to form a winding space with the circumferential wall, and the coil is wound around the circumferential wall and is accommodated in the winding space.

In some embodiments of the switched reluctance motor, at least one of the first and second extensions is provided with a wire-dividing slot for isolating phase wires of different phases of the coil.

In some embodiments of the switched reluctance motor, the wire dividing groove is arranged on the first extension part, and a first notch is arranged on one side of the first extension part away from the circumferential wall so as to communicate the winding space with the wire dividing groove; and/or

The branching groove is arranged on the second extension part, and a second notch is arranged on one side, far away from the circumferential wall, of the second extension part so as to communicate the winding space with the branching groove.

In some embodiments of the switched reluctance motor, the stator mechanism further includes a body, and the body is in a polygonal ring-like structure, and each stator pole is accommodated in a space surrounded by the body and is disposed on each side in a one-to-one correspondence manner.

In some embodiments of the switched reluctance motor, a side of the body remote from the stator poles is provided with a plurality of positioning bosses for positioning connection with the housing.

In some embodiments of the switched reluctance motor, the body is further provided with a mounting hole for axial locking with the housing.

In some embodiments of the switched reluctance motor, the housing includes a front end cover and a rear end cover, a plurality of first bosses are arranged on the front end cover, a first socket is arranged on the first bosses, a plurality of second bosses are arranged on the rear end cover, a second socket is arranged on the second bosses, and the front end cover and the rear end cover are arranged on two sides of the body and are respectively inserted and positioned with the positioning bosses through the first socket and the second socket.

In some embodiments of the switched reluctance motor, the first boss and the second boss are provided with mounting portions that mate with the mounting holes.

In some embodiments of the switched reluctance motor, the first boss is provided with a plurality of first attaching portions extending to one side of the body so as to form the first socket, the first attaching portions can be attached to the body, and the second boss is provided with a plurality of second attaching portions extending to one side of the body so as to form the second socket, and the second attaching portions can be attached to the body.

In some embodiments of the switched reluctance motor, the front end cover includes a front end face and a first circumferential face, the first circumferential face is disposed around the front end face and extends from the front end face to one side of the body, the rear end cover includes a rear end face and a second circumferential face, the second circumferential face is disposed around the rear end face and extends from the rear end face to one side of the body, first through holes are formed in the front end face and the rear end face, and second through holes are formed in the first circumferential face and the second circumferential face.

In some embodiments of the switched reluctance motor, the stator mechanism further comprises a monitoring assembly, the monitoring assembly comprises a circuit board, a temperature measuring unit and a plurality of groups of position monitoring unit groups, the temperature measuring unit is electrically connected with the circuit board, the circuit board is arranged on the body so as to enable the temperature measuring unit to be abutted to one of the coils, the position monitoring unit groups comprise two position monitoring units, each position monitoring unit is arranged around a rotating shaft of the rotor assembly and is electrically connected with the circuit board, and the position monitoring units are used for monitoring the rotating position of the rotor assembly.

In some embodiments of the switched reluctance motor, the rotor assembly includes a rotating shaft and rotor poles disposed around the rotating shaft, the rotor assembly further includes a plurality of monitoring portions, each of the monitoring portions corresponds to each of the rotor poles one by one and is disposed on the rotating shaft, the monitoring portions are capable of sequentially passing through each of the position monitoring units along with rotation of the rotating shaft, the monitoring portions have a first edge and a second edge disposed opposite to each other along a rotation path thereof, and a first plane passing through a center line of one of adjacent rotor poles and a rotation axis thereof is tangent to the first edge, and the second edge is located on a symmetry plane between the adjacent rotor poles.

In some embodiments of the switched reluctance motor, one of the two position monitoring units in the same position monitoring unit group is located on a second plane passing through a center line of one of the adjacent stator poles and the rotating shaft, and the other one of the two position monitoring units in the same position monitoring unit group is located on a symmetrical plane between the adjacent stator poles.

In some embodiments of the switched reluctance motor, the circuit board is provided to the body through at least one of the insulators.

In some embodiments of the switched reluctance motor, the stator mechanism further comprises a clamping assembly for clamping and extracting the phase wires from the stator mechanism.

In some embodiments of the switched reluctance motor, the clamping assembly includes a first clamping portion and a second clamping portion, the first clamping portion and the second clamping portion being detachably connected and capable of enclosing to form a plurality of wire slots, each wire slot being respectively configured to receive the phase wires of a different phase.

The implementation of the embodiment of the invention has the following beneficial effects:

the switch reluctance motor of the scheme not only has excellent driving efficiency, but also can reduce the complexity of the production process and improve the magnetic field precision. Specifically, the switched reluctance motor includes a housing, a rotor assembly, and a stator mechanism. The stator mechanism comprises a plurality of stator poles, the coil is arranged on the stator poles through the insulating piece, and the coil can be wound on the insulating piece in advance and can be installed on the stator poles together with the insulating piece, so that the complexity of the production process of the switch reluctance motor can be reduced, the requirement on winding equipment is reduced, the production efficiency is improved, and the fault rate of turn-to-turn short circuit of the coil is reduced. Further, be equipped with the installation space that is used for stator pole to insert and establish on the insulating part, be equipped with the mounting groove on the stator, be equipped with at least part on the insulating part and accept in the installation arch of mounting groove, because the formation of mounting groove does not increase the circumference size of stator pole, the installation arch only need be along perpendicular to stator pole insert establish the direction do a small amount of deformation can with stator pole butt, and can remove the slip mounting groove along with the insulating part, so can avoid the insulating part at too big with stator pole installation in-process deformation, and then avoid the winding position change of coil to influence the magnetic field precision of follow-up formation.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Wherein:

FIG. 1 is an axial view of a switched reluctance motor in one embodiment;

FIG. 2 is a schematic diagram of an exploded structure of the switched reluctance motor of FIG. 1;

FIG. 3 is a front view of a stator mechanism in the switched reluctance motor of FIG. 1;

FIG. 4 is a rear view of a stator mechanism in the switched reluctance motor of FIG. 1;

FIG. 5 is a schematic diagram of an exploded construction of a stator mechanism in the switched reluctance motor of FIG. 1;

FIG. 6 is an axial view of an insulator in the switched reluctance motor of FIG. 1;

FIG. 7 is an axial view of another view of the insulator in the switched reluctance motor of FIG. 1;

FIG. 8 is a schematic diagram illustrating an assembly between stator poles and an insulator in the switched reluctance motor of FIG. 1;

FIG. 9 is an enlarged schematic view of the portion A in FIG. 8;

FIG. 10 is a schematic view showing another construction of the mounting boss in the example;

FIG. 11 is an isometric view of a monitoring assembly in the switched reluctance motor of FIG. 1;

FIG. 12 is an isometric view of another view of a monitoring assembly in the switched reluctance motor of FIG. 1;

FIG. 13 is a diagram of the relationship between the monitoring assembly and the coil in the switched reluctance motor of FIG. 1;

FIG. 14 is a diagram illustrating the positional relationship between a monitoring assembly and stator poles in the switched reluctance motor;

FIG. 15 is an axial view of a rotor assembly in the switched reluctance motor of FIG. 1;

FIG. 16 is an axial view of another perspective of a rotor assembly in the switched reluctance motor of FIG. 1;

FIG. 17 is a diagram illustrating the relationship between the monitoring portion and the rotor poles in the switched reluctance motor of FIG. 1;

FIG. 18 is an axial view of a front end cap in the switched reluctance motor of FIG. 1;

FIG. 19 is an isometric view of a rear end cap in the switched reluctance motor of FIG. 1;

fig. 20 is a schematic view of another example clamping assembly.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

The invention provides a switch reluctance motor for solving the technical problems. Referring to fig. 1, 2, and 5-8, the switched reluctance motor includes a housing 10, a rotor assembly 20, and a stator mechanism 30. The rotor assembly 20 is rotatably connected to the housing 10, and can rotate relative to the housing 10 under the driving of the stator mechanism 30. Further, a stator mechanism 30 is provided to the housing 10. The stator mechanism 30 includes a plurality of stator poles 31. Each stator pole 31 is distributed around the rotor assembly 20, and the stator mechanism 30 further includes a plurality of coils 32, where each coil 32 is disposed on each stator pole 31 through an insulating member 33. In the present embodiment, the number of the stator poles 31 is 8, and two coils 32, which are opposite to each other in the radial direction and are located in the same radial direction, are connected to form one phase. It will be appreciated that in other embodiments, the number of stator poles 31 may be other values. Further, an insulator 33 is used to electrically isolate the stator poles 31 from the coils 32. The insulator 33 is provided with an installation space 100. The stator pole 31 is inserted into the installation space 100. As shown in fig. 9, the stator pole 31 is provided with a mounting groove 200. The extending direction of the mounting groove 200 forms a certain angle with the inserting direction of the stator pole 31. The insulator 33 is provided with a mounting protrusion 331, and the mounting protrusion 331 is located in the mounting space 100 and at least partially received in the mounting groove 200 to clamp the insulator 33 to the stator pole 31. In this embodiment, a certain insertion direction is parallel to the direction indicated by the arrow X in fig. 5, and the extending direction of the mounting groove 200 is parallel to the direction indicated by the arrow Y in fig. 5.

In summary, the implementation of the embodiment of the invention has the following beneficial effects: the switch reluctance motor of the scheme not only has excellent driving efficiency, but also can reduce the complexity of the production process and improve the magnetic field precision. Specifically, the switched reluctance motor includes a housing 10, a rotor assembly 20, and a stator mechanism 30. The stator mechanism 30 includes a plurality of stator poles 31, the coil 32 is disposed on the stator poles 31 through the insulating member 33, and the coil 32 can be wound on the insulating member 33 in advance and can be mounted on the stator poles 31 together with the insulating member 33, so that the complexity of the production process of the switched reluctance motor can be reduced, the requirement on winding equipment is reduced, the production efficiency is improved, and the failure rate of turn-to-turn short circuit of the coil 32 is reduced. Further, the insulator 33 is provided with the mounting space 100 for inserting the stator pole 31, the stator pole 31 is provided with the mounting groove 200, the insulator 33 is provided with the mounting protrusion 331 at least partially accommodated in the mounting groove 200, the circumferential dimension of the stator pole 31 is not increased due to the formation of the mounting groove 200, the mounting protrusion 331 can be abutted to the stator pole 31 only by small deformation along the inserting direction perpendicular to the stator pole 31, and can slide into the mounting groove 200 along with the movement of the insulator 33, so that the insulator 33 can be prevented from being excessively deformed in the mounting process with the stator pole 31, and further, the influence of the change of the winding position of the coil 32 on the magnetic field precision formed later is avoided.

In one embodiment, referring to fig. 8 and 9 together, the stator pole 31 is inserted into the mounting space 100 and includes at least an initial position and a final position, and the mounting protrusion 331 is disposed near the final position on the insulating member 33. The installation protruding 331 is close to the termination position setting for before the stator pole 31 is close to the termination position, be non-contact state between installation protruding 331 and the stator pole 31, and then can't drive insulating piece 33 deformation, guarantee the stability of coil 32 winding position. Further, the installation protrusion 331 is disposed near the end position, so that the influence of the deformation of the installation protrusion 331 on the whole deformation of the insulating member 33 can be ensured to be as small as possible, the stability of the winding position of the coil 32 is further improved, and the accuracy of forming the magnetic field is ensured. As shown in fig. 9, in the present embodiment, the mounting boss 331 is located on the side of the insulator 33 near the rotor assembly 20. The mounting protrusion 331 has a semi-cylindrical shape with a diameter of 0.2-0.5 mm and a length of 3-10 mm. It will be appreciated that in other embodiments, the mounting boss 331 may also be triangular, trapezoidal, or other polygonal in cross-section. In this embodiment, the coils 32 are wound by enamelled wires, and four groups of two coils are respectively mounted on two radially opposite stator poles 31, and are connected in series in the forward direction or in the reverse direction to form a group.

In one embodiment, referring to fig. 9, the mounting groove 200 is formed in the stator pole 31 to form a stop portion 311 on the stator pole 31, and the formed stop portion 311 can prevent the mounting protrusion 331 from coming out of the mounting groove 200, so as to further improve the connection stability between the insulating member 33 and the stator pole 31. Further, a first arc surface 312 is provided on a side of the stopper 311 facing the insulator 33, and a second arc surface 3311 is provided on a side of the mounting boss 331 facing the stator pole 31. So can make things convenient for installation protruding 331 to slide into mounting groove 200 along backstop portion 311 through first arc surface 312 and second arc surface 3311 direction cooperation, utilize the slip fit between installation protruding 331 and the stator pole 31 to realize the assembly, avoid utilizing external force to increase the deflection of installation protruding 331 along the perpendicular to inserting the direction in order to realize with the stator pole 31 assembly, further reduce the deflection of insulating part 33, guarantee the stability of coil 32 winding position.

In one embodiment, with continued reference to fig. 9, the bottom of the mounting groove 200 is matched to the second arc surface 3311 so that the bottom of the groove can conform to the second arc surface 3311. Therefore, the connection stability between the insulating member 33 and the stator pole 31 can be further improved, and the insulating member 33 is prevented from micro-movement relative to the stator pole 31.

In one embodiment, referring to fig. 6 and 7, the insulating member 33 includes a circumferential wall 332, a first extension 333, and a second extension 334. The circumferential wall 332, the first extension 333, and the second extension 334 are disposed around the mounting space 100 so as to be able to be sleeved on the stator pole 31. Further, the first extension 333 and the second extension 334 are respectively located at two ends of the circumferential wall 332 opposite to each other along the insertion direction, and extend to a side away from the circumferential wall 332 to form a winding space 300 with the circumferential wall 332, and the coil 32 is wound around the circumferential wall 332 and is accommodated in the winding space 300. The coil 32 and the stator pole 31 can be electrically isolated by the limitation of the circumferential wall 332, the first extension 333 and the second extension 334, meanwhile, the winding position of the coil 32 is further ensured to be stable, the coil 32 is isolated from an external structure, and the working stability of the coil 32 is ensured. As shown in fig. 9, in the present embodiment, the second extension 334 is provided near the rotor assembly 20, and the mounting boss 331 is provided at the second extension 334. The circumferential wall 332 is in clearance fit with the stator poles 31. This facilitates the circumferential wall 332 to fit over the stator poles 31. In another embodiment, as shown in fig. 10, the mounting boss 331 includes a fixed portion 3312 and a hanging portion 3313. The fixing portion 3312 is provided to the insulator 33. The hanging portion 3313 is bent from the fixing portion 3312 into the installation space 100 and is provided at a distance from the insulator 33. Specifically, the fixing portion 3312 is provided to the second extension portion 334, and the suspending portion 3313 is bent from the fixing portion 3312 into the installation space 100 and is provided to be spaced apart from the circumferential wall 332. As mentioned above, the clearance fit between the circumferential wall 332 and the stator pole 31 can also provide a space for avoiding deformation of the suspension portion 3313 in the direction perpendicular to the insertion direction, further avoiding deformation of the insulating member 33 caused by deformation of the mounting boss 331, and improving stability of the winding position of the coil 32.

In one embodiment, referring to fig. 6 and 7 together, at least one of the first extension 333 and the second extension 334 is provided with a wire dividing slot 400, the wire dividing slot 400 being used to isolate the phase wires 321 of the different phases of the coil 32. I.e., each of the wire-dividing slots 400 is placed with non-adjacent two-phase wires 321 (e.g., AC phase is placed in one of the wire-dividing slots 400 and BD phase is placed in the other 1 wire-dividing slot 400) to achieve phase-separation. In this embodiment, referring to fig. 6 and 7, the branching groove 400 is disposed on the first extension 333. The first extension 333 is provided with a first notch 500 at a side thereof away from the circumferential wall 332 to communicate the winding space 300 with the wire dividing groove 400. This facilitates the introduction of the phase wires 321 of the coil 32 from the winding space 300 into the wire dividing slot 400. It is understood that in other embodiments, the wire-dividing groove 400 may be provided on the first extension 333 only, the second extension 334 only, or the first extension 333 and the second extension 334, respectively. Similarly, the wire dividing groove 400 is disposed on the second extension portion 334, and a second notch is disposed on a side of the second extension portion 334 away from the circumferential wall 332, so as to communicate the winding space 300 with the wire dividing groove 400. This facilitates the introduction of the phase wires 321 of the coil 32 from the winding space 300 into the wire dividing slot 400. In this embodiment, the width of the first notch 500 and the second notch is 3 to 10mm.

In one embodiment, the insulating member 33 is integrally injection molded of nylon or plastic, and has a certain rigidity under the condition of insulation, so as to ensure the stable position of the coil 32 relative to the stator pole 31.

In one embodiment, as shown in fig. 2 to 5, 8 and 14, the stator mechanism 30 further includes a body 34. The main body 34 is of a polygonal ring-like structure, and each stator pole 31 is accommodated in a space surrounded by the main body 34 and is arranged on each side in a one-to-one correspondence manner. When the switch reluctance motor works, the rotor assembly 20 can attract the stator poles 31, radial pulling force is generated on the two stator poles 31 in the same radial direction at a certain moment, the switch reluctance motor is easy to vibrate, the body 34 is of a polygonal ring-like structure, the stator poles 31 are arranged on the sides in a one-to-one correspondence mode, the rigidity of the body 34 can be improved, the deformation of the body 34 caused by the radial pulling force of the rotor assembly 20 is reduced, the stability of the positions of the stator poles 31 is guaranteed, and then vibration of the switch reluctance motor is reduced. In this embodiment, the body 34 and the stator pole 31 are integrally arranged, and are formed by laminating non-oriented silicon steel sheets with low loss and high magnetic permeability. The silicon steel sheet is punched with a plurality of bulges when being punched, and the lamination of a plurality of bulges achieves self-locking, so that iron core locking processes such as gluing, welding, buckling sheets and the like are omitted.

In one embodiment, as shown in fig. 5, 6 and 13, the first extension 333 is disposed proximate to the body 34. The first extension 333 is provided with a plurality of strips 3331. Adjacent stripe portions 3331 are spaced apart to form the wire dividing groove 400. The body 34 has an abutting portion 341 parallel to the insertion direction, and at least one strip portion 3331 abuts against the abutting portion 341. In this way, the abutting portion 341 and the strip portion 3331 can be engaged in a direction perpendicular to the insertion direction, so that the stability of the connection between the insulator 33 and the stator pole 31 can be further improved. In this embodiment, the abutting portion 341 is located on one end surface of the main body 34, the strip portions 3331 are parallel to the end surface, and the strip portions 3331 near the end surface abut against the abutting portion 341. Further, the abutting portion 341 is the same as the insulating member 33, as mentioned above, the strip portion 3331 may be made of nylon or plastic, which ensures insulation between the phase line 321 and the main body 34, and meanwhile, the strip portion 3331 is elastically abutted against the main body 34 to further improve the connection stability between the insulating member 33 and the stator pole 31. In this embodiment, the thickness of the strip portion 3331 is 0.5-2 mm, and the dimension of the protruding portion protruding from the first extension portion 333/the second extension portion 334 is 2-6 mm.

In one embodiment, as shown in fig. 8, the mounting slots 200 penetrate the stator poles 31 in the insertion direction perpendicular to the stator poles 31, and the number of the mounting slots 200 is plural and symmetrically disposed with respect to the stator poles 31. This ensures that the stator poles 31 are radially symmetrical about the rotor assembly 20, ensuring that the magnetic field generated at each stator pole 31 position evenly surrounds the rotor assembly 20. In the present embodiment, the number of the mounting grooves 200 is two, and is located at both sides of the stator pole 31. Further, at least two mounting protrusions 331 are provided in each mounting groove 200. The plurality of mounting protrusions 331 located in the same mounting groove 200 are distributed at equal intervals, so that the stress between the insulating piece 33 and the stator pole 31 is ensured to be uniform, and the connection stability is further improved.

In one embodiment, referring to fig. 2-5 and 11-14, the stator mechanism 30 further includes a monitoring assembly 35. The monitoring assembly 35 includes a circuit board 351, a temperature measurement unit 352, and a plurality of position monitoring unit sets. In this embodiment, the circuit board 351 is a PCB board, so as to ensure that the circuit board 351 has a certain rigidity. Further, the temperature measuring unit 352 is electrically connected with the circuit board 351, and the circuit board 351 is disposed on the body 34 to abut the temperature measuring unit 352 with one of the coils 32 for monitoring the temperature of the coil 32, so as to realize over-temperature protection of the switched reluctance motor. In this embodiment, the temperature measuring unit 352 is welded to the circuit board 351, so as to enhance the connection stability between the temperature measuring unit 352 and the circuit board 351, ensure the position accuracy of the temperature measuring unit 352, and further, after the circuit board 351 is connected with the body 34, the temperature measuring unit 352 can effectively abut against the coil 32, thereby improving the monitoring accuracy. Further, in the present embodiment, the temperature measuring unit 352 is only abutted to the coil 32, and no auxiliary fixing of the structure is needed between the temperature measuring unit 352 and the coil 32, so that the temperature measuring unit 352 is separated from the coil 32 when the circuit board 351 is detached from the body 34, the temperature measuring unit 352 is prevented from being fixedly connected to the coil 32, and the lead between the circuit board 351 and the temperature measuring unit 352 is disconnected when the circuit board 351 is detached, thereby simplifying the disassembly and assembly of the circuit board 351. Further, the position monitoring unit group includes two position monitoring units 353, each position monitoring unit 353 is disposed around the rotation axis of the rotor assembly 20 and electrically connected to the circuit board 351, and the position monitoring unit 353 is used for monitoring the rotation position of the rotor assembly 20. Thus, by the cooperation of the position monitoring unit 353 and the rotor assembly 20, different pulse signal combinations are generated for achieving position and speed control of the rotor assembly 20. Further, in this embodiment, the number of the position monitoring unit groups is multiple, so that the number of pulse signals generated by the rotor assembly 20 rotating for one circle can be increased, the control accuracy of the rotor assembly 20 is further improved, the torque pulsation of the switched reluctance motor can be greatly reduced at the low-speed stage of the switched reluctance motor, and the vibration of the switched reluctance motor is reduced.

In one embodiment, referring to fig. 1, 2 and 15-17, the rotor assembly 20 includes a rotating shaft 21 and a rotor pole 22 surrounding the rotating shaft 21. In the present embodiment, the number of the rotor poles 22 is 6, and the rotor poles are uniformly distributed with respect to the rotation shaft 21 together with 8 stator poles 31 and coils 32 to form a four-phase (8/6 pole type) structure. The number of stator poles 31 and rotor poles 22, the number of coils 32, and the number of coils 32 can vary widely and can be selected by the designer to suit design criteria on the hand, as is well known in the art. Further, the rotor assembly 20 further includes a plurality of monitoring portions 23, and each monitoring portion 23 corresponds to each rotor pole 22 one by one and is disposed on the rotating shaft 21. That is, the number of the monitoring sections 23 is identical to the number of the rotor poles 22, and positions of the rotor poles 22 are calibrated in one-to-one correspondence. Further, the monitoring section 23 can sequentially pass through each position monitoring unit 353 as the rotation shaft 21 rotates to generate the aforementioned pulse signal. As shown in fig. 16 and 17, the monitoring portion 23 has a first edge 231 and a second edge 232 disposed opposite to each other along the rotational path thereof, and a first plane passing through the center line a of one of the adjacent rotor poles 22 and the rotational shaft 21 thereof is tangential to the first edge 231, so that the first edge 231 can index the position of the center line a of the rotor pole 22. Further, the second edge 232 is located on the symmetry plane b between the adjacent rotor poles 22. Such that the second edge 232 is able to demarcate the symmetry plane b between adjacent rotor poles 22. In this embodiment, each monitoring portion 23 forms a code disc structure, and the number of the monitoring portions 23 is 6 and has an arc structure of 30 °. The rotor assembly 20 also includes a rotor fan 24.

In one embodiment, as shown in fig. 14, one of the two position monitoring units 353 in the same position monitoring unit group is located on a second plane passing through the center line c of one of the adjacent stator poles 31 and the rotation shaft 21, and the other one of the two position monitoring units 353 in the same position monitoring unit group is located on the symmetry plane d between the adjacent stator poles 31. This can further improve the accuracy of position and speed control of the rotor assembly 20. In the present embodiment, the number of the rotor poles 22 is 6, and the stator poles 31 and the coils 32 are uniformly distributed with respect to the rotating shaft 21, so that the included angle between the two position monitoring units 353 in the same position monitoring unit group and the rotating shaft 21 is 22.5 °. In this embodiment, the number of the position monitoring unit groups is two. The four position monitoring units 353 are sequentially arranged at intervals of 22.5 degrees and are matched with the 6 monitoring parts 23, 48 pulse signals can be generated when the rotor assembly 20 rotates for one circle, 8 unique position information is obtained, four phases of 8 stator poles 31 are excited, and rotation control of the rotor assembly 20 is achieved.

In one embodiment, the circuit board 351 is disposed on the body 34 by at least one insulator 33. As shown in fig. 6, 7, 11, 12 and 14, in the present embodiment, a circuit board 351 is disposed opposite to a coil 32 to be measured, and the circuit board 351 is connected to insulation members 33 located on both sides of the coil 32 in addition to insulation members 33 corresponding to the coil 32. This further improves the stability of the connection of the circuit board 351 to the body 34. Further, a jack 3510 is provided on the circuit board 351, and the jack 3510 is used for plugging in the insulator 33 connected with the circuit board 351. Specifically, the jack 3510 is a square hole, and the insulating member 33 is provided with a plug 335 that is inserted and matched with the jack 3510, so as to further improve the connection stability between the circuit board 351 and the insulating member 33. The plug 335 is provided on the first extension 333 and/or the second extension 334 and extends to a side away from the circumferential wall 332 by a distance of 1 to 3mm, and the plug 335 has a width of 3 to 8mm.

In one embodiment, as shown in fig. 11, 13 and 14, the monitoring assembly 35 further includes a terminal block 354. The terminal block 354 is electrically connected to the circuit board 351 and is used to electrically connect the circuit board 351 to an external circuit. So can be more convenient with the monitoring data of monitoring subassembly 35 to outside transmission through the setting of binding post seat 354, be convenient for know the state of switch reluctance motor and control switch reluctance motor. In this embodiment, the terminal block 354 is a bent pin connector, and can form a parallel outlet with the circuit board 351, so as to facilitate the operation of plugging with an external circuit. The temperature measuring unit 352 is an NTC thermistor. The position monitoring unit 353 is a photoelectric position sensor.

In one embodiment, referring to fig. 1 to 5 together, a plurality of positioning bosses 342 are disposed on a side of the body 34 away from the stator pole 31, and the positioning bosses 342 are used for positioning connection with the housing 10. Thus, the eccentricity of the rotor assembly 20 caused by assembly can be reduced while the position accuracy between the body 34 and the housing 10 is ensured, and abnormal vibration and noise of the switched reluctance motor caused by misalignment of the rotor assembly 20 can be prevented. Further, the body 34 is further provided with a mounting hole 600, and the mounting hole 600 is used for axially locking with the housing 10. As shown in fig. 1, 18 and 19, specifically, the housing 10 includes a front end cover 11 and a rear end cover 12, a plurality of first bosses 111 are disposed on the front end cover 11, a first socket 700 is disposed on the first bosses 111, a plurality of second bosses 121 are disposed on the rear end cover 12, a second socket 800 is disposed on the second bosses 121, and the front end cover 11 and the rear end cover 12 are disposed on two sides of the body 34 and are respectively inserted and positioned with the positioning bosses 342 through the first socket 700 and the second socket 800. Thus, by the arrangement, the circumferential spigot positioning can be formed between the shell 10 and the body 34, the eccentricity of the rotor assembly 20 caused by assembly is further reduced, the abnormal vibration and noise of the switched reluctance motor caused by the misalignment of the rotor assembly 20 are prevented, and meanwhile, the front end cover 11 and the rear end cover 12 can be installed with the body 34. Further, the first boss 111 and the second boss 121 are provided with mounting portions 900 that are fitted with the mounting holes 600. The mounting portion 900 may be a shaft structure, which may be inserted into the mounting hole 600 to achieve axial fixation. In this embodiment, the mounting hole 600 penetrates the body 34, and the mounting portion 900 is a penetrating hole structure or a threaded hole. The attachment hole 600 and the attachment portion 900 are inserted with the attachment member 40 to axially tighten and fix the front end cover 11 and the rear end cover 12 with respect to the body 34. Further, the mounting hole 600 is a through hole structure or a screw hole.

In one embodiment, as shown in fig. 18 and 19, a plurality of first fitting portions 1111 extending to one side of the body 34 are provided on the first boss 111 to form a first socket 700. The first fitting portion 1111 extends to a size of 1 to 5mm, that is, a size protruding outside the first boss 111 is 1 to 5mm, and the thickness of the first fitting portion 1111 is 1 to 3mm. The first fitting portion 1111 is capable of fitting the body 34 to achieve radial positioning between the front end cover 11 and the body 34. The second boss 121 is provided with a plurality of second attaching portions 1211 extending to one side of the body 34 to form a second socket 800. The second fitting portion 1211 extends to a size of 1 to 5mm, that is, a size protruding outside the second boss 121 is 1 to 5mm, and the thickness of the second fitting portion 1211 is 1 to 3mm. The second engaging portion 1211 can engage the body 34 to effect radial positioning between the rear end cap 12 and the body 34. In this embodiment, the body 34 is in an octagonal ring-like structure, the sides of the four corners thereof have arc surfaces, the positioning boss 342 is formed on the arc surfaces, and the first fitting portion 1111 and the second fitting portion 1211 are both fitted to the arc surfaces. In this embodiment, the width of the first socket 700 and the second socket 800 is 3 to 10mm. The first boss 111 protrudes outside the front end cover 11 by a size of 3-15 mm. The second boss 121 protrudes outside the rear end cover 12 by a size of 3-15 mm.

In one embodiment, referring to fig. 1, 2, 18 and 19, the front end cover 11 includes a front end surface 112 and a first circumferential surface 113, the first circumferential surface 113 is annularly disposed on the front end surface 112 and extends from the front end surface 112 to the body 34, the rear end cover 12 includes a rear end surface 122 and a second circumferential surface 123, the second circumferential surface 123 is annularly disposed on the rear end surface 122 and extends from the rear end surface 122 to the body 34, the front end surface 112 and the rear end surface 122 are each provided with a first through hole 13, and the first circumferential surface 113 and the second circumferential surface 123 are each provided with a second through hole 14. The arrangement of the first through hole 13 and the second through hole 14 can enable the switch reluctance motor to have heat dissipation holes in the axial direction and the circumferential direction, so that the switch reluctance motor is prevented from being shielded in the circumferential direction or the axial direction, and heat dissipation of the switch reluctance motor is affected. Further, in the present embodiment, the rotating shaft 21 penetrates the front end face 112 and the rear end face 122 and is rotatably connected with the front end face 112 and the rear end face 122 through the bearing 50, and the annular protrusions 15 for fixing the bearing 50 are provided on the front end face 112 and the rear end face 122 to improve the connection stability of the bearing 50 with the front end face 112 and the rear end face 122.

In one embodiment, as shown in fig. 1, 18 and 19, the first through holes 13 are fan-shaped and uniformly distributed around the rotation shaft 21 of the rotor assembly 20, and in this embodiment, the number of the first through holes 13 is 8. The second through hole 14 is a kidney-shaped hole. It will be appreciated that in other embodiments, the first through holes 13 and the second through holes 14 may be of other shapes, so long as they are uniformly distributed. Further, the second through holes 14 are formed in a plurality of groups, and correspond to one side of the body 34, and the second through holes 14 of each group are arranged at intervals, so that the rigidity of the first circumferential surface 113 and the second circumferential surface 123 is ensured while the heat dissipation uniformity of the switched reluctance motor is ensured. In this embodiment, each set of second through holes 14 includes 3 to 15 second through holes 14. Further, the case 10 is provided with a through groove 16, and the phase line 321 can be led out from the through groove 16, and the circuit board 351 can be exposed to the case 10 through the through groove 16. It will be appreciated that in other embodiments, the number of through slots 16 may be plural for different phase wires 321 exiting and circuit board 351 exposed to housing 10.

In one embodiment, referring to fig. 2 and 5 in combination, the stator mechanism 30 further includes a clamping assembly 36, the clamping assembly 36 being configured to clamp the phase wires 321 and to extract the phase wires from the stator mechanism 30. So make the phase line 321 not draw forth through circuit board 351 for the strong and weak electricity separation of switched reluctance motor, and then prevent that the signal of temperature measurement unit 352 and position monitoring unit 353 from being disturbed, improve switched reluctance motor's operational reliability. As shown in fig. 2, the clamping assembly 36 may be received in the through slot 16.

In one embodiment, as shown in fig. 20, the clamping assembly 36 includes a first clamping portion 361 and a second clamping portion 362, where the first clamping portion 361 and the second clamping portion 362 are detachably connected and can enclose a plurality of wire slots 363, each wire slot 363 being configured to receive a phase line 321 of a different phase. Thus, the phase lines 321 of different phases can be separated by the plurality of lead slots 363, so that mutual interference is prevented.

In one embodiment, referring to fig. 20, the lead slot 363 is opened at one of the first clamping portion 361 and the second clamping portion 362, the other of the first clamping portion 361 and the second clamping portion 362 is provided with a pressing protrusion 364, and the pressing protrusion 364 can extend into the lead slot 363 to abut the phase line 321 against the slot bottom of the lead slot 363. The arrangement of the wire pressing protrusions 364 can ensure that the phase wires 321 can be stably clamped between the first clamping portion 361 and the second clamping portion 362, and the phase wires 321 are prevented from interfering with the operation of the switched reluctance motor. In this embodiment, the wire slot 363 is formed on the first clamping portion 361, and the wire pressing protrusion 364 is formed on the second clamping portion 362.

In one embodiment, referring to fig. 20, a receiving slot 365 is formed between adjacent wire pressing protrusions 364, and the slot wall of the wire guiding slot 363 can be partially received in the receiving slot 365. Thus, the wire pressing protrusions 364 and the slot walls of the wire guiding slots 363 are staggered to further enhance the isolation effect on the phase wires 321 of different phases. In this embodiment, the first clamping portion 361 and the second clamping portion 362 are further provided with a through hole 366, and the fastening member is inserted through the through hole 366 to connect with the body 34 and clamp the phase line 321. Further, the fastener is a threaded member.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The foregoing disclosure is illustrative of the present invention and is not to be construed as limiting the scope of the invention, which is defined by the appended claims.

Claims

1. A switched reluctance motor, comprising:

A housing;

The stator mechanism is arranged on the shell and comprises a plurality of stator poles, a body, clamping assemblies and monitoring assemblies, each stator pole is distributed around the rotor assemblies, the stator mechanism further comprises a plurality of coils, each coil is arranged on each stator pole in a one-to-one correspondence manner through an insulating piece, the insulating piece is used for electrically isolating the stator pole from the coil, an installation space is formed in the insulating piece, the stator poles are inserted in the installation space, an installation groove is formed in each stator pole, the extending direction of each installation groove forms a certain included angle with the inserting direction of each stator pole, an installation protrusion is arranged on the insulating piece, and the installation protrusions are located in the installation space and are at least partially accommodated in the installation grooves so as to clamp the insulating piece with the stator poles;

each stator pole is accommodated in a space surrounded by the body, the monitoring assembly comprises a circuit board and a temperature measuring unit, the temperature measuring unit is electrically connected with the circuit board, and the circuit board is arranged on the body so as to enable the temperature measuring unit to be abutted with one of the coils;

The insulation piece comprises a circumferential wall, a first extension part and a second extension part, wherein the circumferential wall, the first extension part and the second extension part are all arranged around the installation space, the first extension part and the second extension part are respectively positioned at two ends of the circumferential wall, which are oppositely arranged along the inserting direction, and extend to one side far away from the circumferential wall so as to form a winding space with the circumferential wall, and the coil is wound on the circumferential wall and is accommodated in the winding space; at least one of the first and second extensions is provided with a wire dividing slot for isolating phase wires of different phases of the coil;

the clamping assembly is used for clamping the phase lines and leading out the phase lines from the stator mechanism, the clamping assembly comprises a first clamping part and a second clamping part, the first clamping part is detachably connected with the second clamping part and can enclose to form a plurality of lead grooves, and each lead groove is respectively used for accommodating the phase lines of different phases so that each phase line is not led out through the circuit board.

2. The switched reluctance motor according to claim 1, wherein the wire dividing groove is provided in the first extension portion, and a first notch is provided on a side of the first extension portion away from the circumferential wall to communicate the winding space with the wire dividing groove; and/or

3. The switched reluctance motor of claim 2, wherein the body has a polygonal ring-like structure, and each of the stator poles is accommodated in a space surrounded by the body and disposed on each side in one-to-one correspondence.

4. A switched reluctance machine as claimed in claim 3, wherein the side of the body remote from the stator poles is provided with a plurality of locating bosses for locating connection with the housing.

5. The switched reluctance motor of claim 4, wherein the body is further provided with a mounting hole for axial locking with the housing.

6. The switched reluctance motor of claim 5, wherein the housing comprises a front end cover and a rear end cover, a plurality of first bosses are arranged on the front end cover, a first socket is arranged on the first bosses, a plurality of second bosses are arranged on the rear end cover, a second socket is arranged on the second bosses, and the front end cover and the rear end cover are arranged on two sides of the body and are respectively inserted and positioned with the positioning bosses through the first socket and the second socket.

7. The switched reluctance motor of claim 6, wherein the first boss and the second boss are provided with mounting portions that mate with the mounting holes.

8. The switched reluctance motor according to claim 7, wherein the first boss is provided with a plurality of first attaching portions extending to one side of the body to form the first socket, the first attaching portions are capable of attaching to the body, and the second boss is provided with a plurality of second attaching portions extending to one side of the body to form the second socket, and the second attaching portions are capable of attaching to the body.

9. The switched reluctance motor according to claim 8, wherein the front end cover includes a front end surface and a first circumferential surface, the first circumferential surface is annularly provided on the front end surface and extends from the front end surface toward the body side, the rear end cover includes a rear end surface and a second circumferential surface, the second circumferential surface is annularly provided on the rear end surface and extends from the rear end surface toward the body side, first through holes are provided on the front end surface and the rear end surface, and second through holes are provided on the first circumferential surface and the second circumferential surface.

10. The switched reluctance machine of claim 9, wherein the monitoring assembly further comprises a plurality of sets of position monitoring units, the sets of position monitoring units comprising two position monitoring units, each of the position monitoring units disposed about the rotational axis of the rotor assembly and electrically connected to the circuit board, the position monitoring units configured to monitor the rotational position of the rotor assembly.

11. The switched reluctance machine of claim 10 wherein the rotor assembly comprises a shaft and rotor poles looped around the shaft, the rotor assembly further comprising a plurality of monitoring portions each in one-to-one correspondence with each rotor pole and disposed on the shaft, the monitoring portions being capable of passing through each of the position monitoring units in turn as the shaft rotates, the monitoring portions having first and second edges disposed opposite one another along a rotational path thereof, a first plane passing through a centerline of one of adjacent rotor poles and a rotational axis thereof being tangential to the first edge, the second edge being located on a plane of symmetry between the adjacent rotor poles.

12. The switched reluctance machine of claim 11, wherein one of the two position monitoring units in the same set of position monitoring units is located in a second plane passing through a centerline of one of the adjacent stator poles and the rotating shaft, and the other of the two position monitoring units in the same set of position monitoring units is located on a plane of symmetry between the adjacent stator poles.

13. The switched reluctance machine of claim 10, wherein the circuit board is provided to the body via at least one of the insulators.