CN113991896A

CN113991896A - Switched reluctance motor

Info

Publication number: CN113991896A
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: 2022-01-28
Anticipated expiration: 2041-10-21
Also published as: CN113991896B

Abstract

The embodiment of the invention discloses a switched reluctance motor, and relates to the field of driving equipment. The switched reluctance motor comprises a shell, 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 part, the coil can be wound on the insulating part in advance and can be arranged on the stator poles together with the insulating part, 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 fault rate of turn-to-turn short circuit of the coil is reduced. The installation bulge that accepts in the mounting groove of at least part is equipped with on the insulating part, because the formation of mounting groove does not increase the circumferential dimension of stator utmost point, the installation bulge only need be along the direction of establishing of inserting of perpendicular to stator utmost point do a small amount of deformations can with stator utmost point butt, and can remove along with the insulating part and slide in the mounting groove, so can avoid the insulating part to warp too big in with stator utmost point installation, and then avoid the winding position of coil to change the magnetic field precision that influences follow-up formation.

Description

Switched reluctance motor

Technical Field

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

Background

Insulation structure is often set up among the current switched reluctance motor in order to guarantee the insulation between iron core and the coil, and this insulation structure is the split type structure including two parts, constitutes a whole after installing in the iron core. Therefore, before the coil is installed, the insulation structure needs to be installed on the iron core, and then the coil is wound on the insulation 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 installed on the iron core, the insulation structure needs to be greatly deformed in the installation process of the insulation structure and the iron core to be clamped and fixed with the iron core, the deformation easily changes the winding position of the coil, and the accuracy of a subsequently formed magnetic field is affected.

Disclosure of Invention

Therefore, a switched reluctance motor is needed to be provided, and the technical problems that the existing switched reluctance motor is complex in production process and poor in magnetic field precision are solved.

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

a switched reluctance machine comprising:

a housing;

a rotor assembly rotatably coupled to the housing; and

stator mechanism locates the casing, stator mechanism includes a plurality of stator poles, each the stator pole encircles the rotor subassembly distributes, stator mechanism still includes a plurality of coils, each the coil one-to-one locates each through the insulator the stator pole, the insulator be used for with the stator pole with the coil electrical isolation, be equipped with installation space on the insulator, the stator pole is inserted and is located installation space, be equipped with the mounting groove on the stator pole, the extending direction of mounting groove with the stator pole insert establish the direction and be certain contained angle, be equipped with the installation arch on the insulator, the installation arch is located installation space and at least part accept in the mounting groove, with the insulator with stator pole joint.

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 all surround the installation space, the first extension portion and the second extension portion are respectively located at two ends of the circumferential wall, which are opposite to each other in the insertion direction, and extend to one side away from the circumferential wall 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.

In some embodiments of the switched reluctance machine, at least one of the first outer extension and the second outer extension is provided with a shunt slot for isolating phase lines of different phases of the coil.

In some embodiments of the switched reluctance motor, the branching groove is provided in the first outward extending portion, and a side of the first outward extending portion away from the circumferential wall is provided with a first notch so as to communicate the winding space with the branching groove; and/or

The wire distributing groove is formed in the second extending portion, and a second notch is formed in one side, far away from the circumferential wall, of the second extending portion so that the winding space is communicated with the wire distributing groove.

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

In some embodiments of the switched reluctance motor, a side of the body away from the stator pole is provided with a plurality of positioning bosses, and the positioning bosses are used for being connected with the shell in a positioning manner.

In some embodiments of the switched reluctance motor, the body is further provided with a mounting hole, and the mounting hole is used for being axially locked with the housing.

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

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

In some embodiments of the switched reluctance motor, a plurality of first attaching portions extending to one side of the body are arranged on the first boss to form the first socket, the first attaching portions can be attached to the body, a plurality of second attaching portions extending to one side of the body are arranged on the second boss 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 cover includes a front end surface and a first circumferential surface, the first circumferential surface is disposed around the front end surface and extends from the front end surface to one side of the body, the rear cover includes a rear end surface and a second circumferential surface, the second circumferential surface is disposed around the rear end surface and extends from the rear end surface to one side of the body, the front end surface and the rear end surface are both provided with first through holes, and the first circumferential surface and the second circumferential surface are both provided with second through holes.

In some embodiments of the switched reluctance motor, the stator mechanism further includes a monitoring assembly, the monitoring assembly includes a circuit board, a temperature measuring unit, and a plurality of position monitoring unit sets, the temperature measuring unit is electrically connected to the circuit board, the circuit board is disposed on the body to abut the temperature measuring unit against one of the coils, the position monitoring unit set includes two position monitoring units, each of the position monitoring units is disposed around the rotating shaft of the rotor assembly and electrically connected to the circuit board, and the position monitoring unit is configured to monitor a rotating position of the rotor assembly.

In some embodiments of the switched reluctance motor, the rotor assembly includes a rotating shaft and rotor poles annularly arranged on the rotating shaft, and the rotor assembly further includes a plurality of monitoring portions, each of the monitoring portions corresponds to each of the rotor poles one to one and is arranged on the rotating shaft, the monitoring portions can sequentially pass through each of the position monitoring units along with the rotation of the rotating shaft, the monitoring portions have first edges and second edges which are arranged along the rotating path of the monitoring portions in an opposite manner, a first plane passing through a center line of one of the adjacent rotor poles and a rotating shaft thereof is tangent to the first edges, and the second edges are located on a symmetrical 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 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 machine, the circuit board is disposed to the body through at least one of the insulators.

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

In some embodiments of the switched reluctance machine, the clamping assembly includes a first clamping portion and a second clamping portion, the first clamping portion and the second clamping portion are detachably connected and can be enclosed to form a plurality of lead slots, and each lead slot is used for accommodating the phase lines of different phases.

The embodiment of the invention has the following beneficial effects:

the switched reluctance motor of the scheme has excellent driving efficiency, and 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, the coil can be wound on the insulating piece in advance and can be arranged on the stator poles together with the insulating piece, the complexity of the production process of the switched reluctance motor can be reduced, the requirement on winding equipment is lowered, the production efficiency is improved, and the fault rate of turn-to-turn short circuit of the coil is reduced. Further, be equipped with on the insulating part and be used for the stator utmost point to insert the installation space of establishing, be equipped with the mounting groove on the stator utmost point, be equipped with at least part on the insulating part and accept the installation arch in the mounting groove, because the formation of mounting groove does not increase the circumference size of stator utmost point, the installation arch only need be along the perpendicular to stator utmost point insert establish the direction do a small amount of deformation can with stator utmost point butt, and can remove along with the insulating part and slide into the mounting groove, so can avoid the insulating part to warp too greatly in with stator utmost point installation, and then avoid the winding position of coil to change the magnetic field precision that influences follow-up formation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Wherein:

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

fig. 2 is an exploded view of the switched reluctance motor shown in fig. 1;

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

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

fig. 5 is an exploded view of a stator mechanism in the switched reluctance motor shown in fig. 1;

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

fig. 7 is an axial view of another perspective of an insulator in the switched reluctance machine of fig. 1;

fig. 8 is a schematic view illustrating an assembly between a stator pole and an insulator in the switched reluctance motor shown in fig. 1;

FIG. 9 is an enlarged view of part A of FIG. 8;

FIG. 10 is another schematic view showing the structure of a mounting projection in the example;

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

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

fig. 13 is a diagram illustrating a positional relationship between a monitoring unit and a coil in the switched reluctance motor shown in fig. 1;

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

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

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

fig. 17 is a diagram illustrating a positional relationship between a monitoring part and a rotor pole in the switched reluctance motor shown in 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 axial 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 technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying 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 present invention provides a switched reluctance motor to solve the above technical problems. Referring to fig. 1, 2, and 5 to 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, i.e., can be driven by the stator mechanism 30 to rotate relative to the housing 10. Further, a stator mechanism 30 is provided to the housing 10. The stator mechanism 30 includes a plurality of stator poles 31. The stator poles 31 are distributed around the rotor assembly 20, and the stator mechanism 30 further includes a plurality of coils 32, wherein the coils 32 are disposed on the stator poles 31 through insulators 33. In this embodiment, the number of the stator poles 31 is 8, and each stator pole 31 is two by two diametrically opposite coils 32 located on the same radial direction and connected to form one phase. It is understood that the number of stator poles 31 may also have other values in other embodiments. Further, the insulator 33 serves 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 insulating member 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 insulating member 33 with the stator pole 31. In this embodiment, one of the inserting directions 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 embodiment of the invention has the following beneficial effects: the switched reluctance motor of the scheme has excellent driving efficiency, and 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 comprises a plurality of stator poles 31, the coil 32 is arranged on the stator poles 31 through the insulating piece 33, and the coil 32 can be wound on the insulating piece 33 in advance and can be mounted on the stator poles 31 together with the insulating piece 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 fault rate of turn-to-turn short circuit of the coil 32 is reduced. Furthermore, the insulating member 33 is provided with an installation space 100 for inserting the stator pole 31, the stator pole 31 is provided with an installation groove 200, the insulating member 33 is provided with an installation protrusion 331 at least partially accommodated in the installation groove 200, because the circumferential size of the stator pole 31 is not increased by the formation of the installation groove 200, the installation protrusion 331 can abut against the stator pole 31 only by deforming a small amount in the direction perpendicular to the insertion direction of the stator pole 31, and can slide into the installation groove 200 along with the movement of the insulating member 33, so that the phenomenon that the insulating member 33 deforms too much in the installation process with the stator pole 31 can be avoided, and the influence of the change of the winding position of the coil 32 on the accuracy of a subsequently formed magnetic field can be avoided.

In one embodiment, referring to fig. 8 and 9, the process of inserting the stator pole 31 into the installation space 100 includes at least an initial position and a final position, and the installation protrusion 331 is disposed on the insulating member 33 near the final position. The mounting protrusion 331 is disposed near the end position, so that before the stator pole 31 approaches the end position, the mounting protrusion 331 and the stator pole 31 are in a non-contact state, and further the insulator 33 cannot be driven to deform, thereby ensuring the stability of the winding position of the coil 32. 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 overall 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 the formed magnetic field is ensured. As shown in fig. 9, in the present embodiment, the mounting protrusion 331 is located on the side of the insulator 33 close to the rotor assembly 20. The mounting protrusion 331 is semi-cylindrical, and has a diameter of 0.2 to 0.5mm and a length of 3 to 10 mm. It is understood that in other embodiments, the cross-section of the mounting protrusion 331 may also be triangular, trapezoidal, or other polygonal shape. In this embodiment, the coils 32 are wound by enameled wires, and have four groups, two in each group, and are respectively installed on two stator poles 31 opposite to each other in the radial direction, and are connected in series in the forward direction or the reverse direction to form one group.

In an embodiment, referring to fig. 9, the mounting groove 200 is opened on the stator pole 31 to form a stopping portion 311 on the stator pole 31, and the stopping 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 disposed on a side of the stopping portion 311 facing the insulating member 33, and a second arc surface 3311 is disposed on a side of the mounting protrusion 331 facing the stator pole 31. So can make things convenient for the installation arch 331 to slide into mounting groove 200 along backstop portion 311 through first arc surface 312 and the cooperation of second arc surface 3311 direction, utilize the sliding fit between installation arch 331 and the stator pole 31 to realize the assembly, avoid utilizing external force to increase the deflection of installation arch 331 along the perpendicular to inserting the direction and in order to realize assembling with stator pole 31, further reduce the deflection of insulating part 33, guarantee the stability of coil 32 winding position.

In one embodiment, referring to fig. 9, the bottom of the mounting groove 200 is matched with the second arc surface 3311, so that the bottom of the mounting groove can be attached to the second arc surface 3311. Therefore, the connection stability between the insulating piece 33 and the stator pole 31 can be further improved, and the insulating piece 33 is prevented from slightly moving 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 outer extension 333, and a second outer extension 334. The circumferential wall 332, the first outer extension part 333, and the second outer extension part 334 are all disposed around the mounting space 100 so as to be able to be sleeved on the stator pole 31. Further, the first extending portion 333 and the second extending portion 334 are respectively located at two ends of the circumferential wall 332 opposite to each other in the insertion direction, and extend to a side away from the circumferential wall 332 to form a winding space 300 by surrounding the circumferential wall 332, and the coil 32 is wound on the circumferential wall 332 and is accommodated in the winding space 300. The coil 32 can be electrically isolated from the stator pole 31 by the limitation of the circumferential wall 332, the first extension part 333, and the second extension part 334, and the stability of the winding position of the coil 32 can be further ensured, so that the coil 32 is isolated from the external structure, and the stability of the operation of the coil 32 can be ensured. As shown in fig. 9, in the present embodiment, the second outer extension portion 334 is disposed adjacent to the rotor assembly 20, and the mounting projection 331 is disposed on the second outer extension portion 334. The circumferential wall 332 is clearance fit with the stator poles 31. This facilitates the circumferential wall 332 to be sleeved over the stator pole 31. As shown in fig. 10, in another embodiment, the mounting boss 331 includes a fixing portion 3312 and a suspension portion 3313. The fixing portion 3312 is provided in the insulator 33. The overhang portion 3313 is bent and extended from the fixing portion 3312 into the installation space 100 and is spaced apart from the insulator 33. Specifically, the fixing portion 3312 is disposed on the second extension portion 334, and the suspending portion 3313 is bent and extended from the fixing portion 3312 into the installation space 100 and disposed at a distance from the circumferential wall 332. As mentioned above, the clearance fit between the circumferential wall 332 and the stator pole 31 can also provide an avoidance space for the deformation of the suspension portion 3313 in the direction perpendicular to the insertion direction, further avoiding the deformation of the insulator 33 caused by the deformation of the mounting protrusion 331, and improving the 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 and second

outer extensions

333, 334 is provided with a split slot 400, the split slot 400 being used to isolate the phase lines 321 of different phases of the coil 32. Namely, two phase lines 321 which are not adjacent to each other are respectively placed in each splitting slot 400 (for example, an AC phase is placed in one splitting slot 400, and a BD phase is placed in the other 1 splitting slot 400) to realize split-phase isolation. In this embodiment, with continued reference to fig. 6 and 7, the wire-dividing slot 400 is disposed on the first extending portion 333. A side of the first outward extension part 333 away from the circumferential wall 332 is provided with a first notch 500 to communicate the winding space 300 with the branching groove 400. This facilitates the introduction of the phase line 321 of the coil 32 from the winding space 300 into the branching groove 400. It is understood that in other embodiments, the branching slot 400 may be provided only on the first outer extension 333 or only on the second outer extension 334 or on the first outer extension 333 and the second outer extension 334, respectively. Similarly, the branch groove 400 is provided on the second extending portion 334, and a second notch is provided on a side of the second extending portion 334 away from the circumferential wall 332 to communicate the winding space 300 with the branch groove 400. This facilitates the introduction of the phase line 321 of the coil 32 from the winding space 300 into the branching groove 400. In this embodiment, the widths of the first notch 500 and the second notch are 3-10 mm.

In one embodiment, the insulating member 33 is made of nylon or plastic material and is integrally injection-molded, so as to have a certain rigidity under the condition of ensuring insulation, and ensure the position stability 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 body 34 is a polygonal-like ring structure, and the stator poles 31 are accommodated in a space surrounded by the body 34 and are correspondingly arranged on each side. When the switched reluctance motor works, the rotor assembly 20 can attract the stator poles 31, radial tension is generated on the two radial stator poles 31 at a certain moment, the switched reluctance motor is easy to vibrate, the body 34 is of a similar polygonal annular structure, the stator poles 31 are arranged on each side in a one-to-one correspondence mode, the rigidity of the body 34 is improved, deformation of the body 34 caused by the radial tension of the rotor assembly 20 is reduced, the position of each stator pole 31 is stable, and vibration of the switched reluctance motor is reduced. In this embodiment, the body 34 and the stator pole 31 are integrally formed by laminating non-oriented silicon steel sheets with low loss and high magnetic conductance. A plurality of bulges are punched when the silicon steel sheet is stamped, and a plurality of silicon steel sheets are laminated to achieve self-locking, so that iron core locking processes such as gluing, welding, cramping and the like are omitted.

In one embodiment, as shown in fig. 5, 6 and 13, the first outward extension 333 is disposed proximate to the body 34. The first extension 333 has a plurality of stripe portions 3331. The adjacent strips 3331 are spaced apart to form the distribution grooves 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 bar portion 3331 can be engaged with each other in the direction perpendicular to the insertion direction, and the stability of 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 all parallel to the end surface, and the strip portions 3331 close to the end surface abut against the abutting portion 341. Further, the abutting portion 341 and the insulating member 33 are made of the same material, as mentioned above, the strip portion 3331 may also be made of nylon or plastic, so as to ensure the insulation between the phase line 321 and the body 34, and meanwhile, the strip portion 3331 has the characteristic of elasticity and can elastically abut against the body 34, so as to further improve the stability of the connection 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 size of the protrusion outside the first extension portion 333/the second extension portion 334 is 2-6 mm.

In one embodiment, as shown in fig. 8, the mounting grooves 200 penetrate the stator poles 31 in a direction perpendicular to the insertion direction of the stator poles 31, and the mounting grooves 200 are plural in number and symmetrically disposed about the stator poles 31. This ensures that the stator poles 31 are radially symmetrical with respect to the rotor assembly 20, ensuring that the magnetic field generated at each stator pole 31 location is uniform around the rotor assembly 20. In this embodiment, the number of the mounting grooves 200 is two, and the mounting grooves are located on 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 member 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 to 5 and fig. 11 to 14, the stator mechanism 30 further includes a monitoring component 35. The monitoring assembly 35 includes a circuit board 351, a temperature measuring unit 352 and a plurality of position monitoring unit sets. In this embodiment, the circuit board 351 is a PCB board, which ensures that the circuit board 351 has a certain rigidity. Further, the temperature measuring unit 352 is electrically connected to the circuit board 351, and the circuit board 351 is disposed on the body 34, so that the temperature measuring unit 352 is abutted to one of the coils 32 for monitoring the temperature of the coil 32, thereby realizing the 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 and ensure the position accuracy of the temperature measuring unit 352, and then after the circuit board 351 is connected with the body 34, the temperature measuring unit 352 can be effectively abutted against the coil 32, thereby improving the monitoring accuracy. Furthermore, in the embodiment, the temperature measuring unit 352 only abuts against the coil 32, and the temperature measuring unit 352 and the coil 32 are not fixed by structural assistance, so that when the circuit board 351 is detached from the body 34, the temperature measuring unit 352 is separated from the coil 32, the temperature measuring unit 352 is prevented from being fixed to the coil 32, and a lead between the temperature measuring unit 352 and the circuit board 351 needs to be disconnected when the circuit board 351 is detached, thereby simplifying the detachment and installation 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 configured to monitor the rotation position of the rotor assembly 20. In this manner, the position monitoring unit 353 cooperates with the rotor assembly 20 to generate different combinations of pulse signals for achieving position and speed control of the rotor assembly 20. Further, in this embodiment, the number of position monitoring unit group is a plurality of, so can improve the pulse signal quantity that rotor subassembly 20 rotatory a week produced, further promotes rotor subassembly 20's control accuracy, can greatly reduced switched reluctance motor's torque ripple at switched reluctance motor low-speed stage, reduces switched reluctance motor vibration.

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 annularly disposed on the rotating shaft 21. In this embodiment, the number of the rotor poles 22 is 6, and 8 stator poles 31 and coils 32 are uniformly distributed with respect to the rotation shaft 21, thereby forming a four-phase (8/6-pole type) structure. As is well known in the art, 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 the design criteria at hand. 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 portions 23 is the same as the number of the rotor poles 22, and the positions of the rotor poles 22 are calibrated in a one-to-one correspondence. Further, the monitoring portion 23 can sequentially pass through the position monitoring units 353 as the rotating shaft 21 rotates to generate the aforementioned pulse signals. As shown in fig. 16 and 17, the monitoring portion 23 has a first edge 231 and a second edge 232 disposed opposite each other along its rotational path, and a first plane passing through the center line a of one of the adjacent rotor poles 22 and the rotational axis 21 thereof is tangent to the first edge 231, such that the first edge 231 can demarcate 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 above-mentioned adjacent rotor poles 22. Such that the second edge 232 can demarcate a symmetry plane b between adjacent rotor poles 22. In the present embodiment, each monitoring unit 23 constitutes a code wheel structure, and the number of monitoring units 23 is 6, and the monitoring units are in an arc-shaped 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 rotating shaft 21, and the other 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 this embodiment, the number of the rotor poles 22 is 6, and the rotor poles are uniformly distributed with 8 stator poles 31 and coils 32 relative 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, and 8 unique position information is obtained, so that four phases of 8 stator poles 31 are excited, and the rotation control of the rotor assembly 20 is realized.

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

In one embodiment, as shown in fig. 11, 13 and 14, the monitoring assembly 35 further includes a terminal block 354. The connection terminal block 354 is electrically connected to the circuit board 351 and is used to electrically connect the circuit board 351 with an external circuit. The arrangement of the terminal block 354 can more conveniently transmit the monitoring data of the monitoring assembly 35 to the outside, so that the state of the switched reluctance motor can be conveniently known and the switched reluctance motor can be controlled. In this embodiment, the connection terminal block 354 is a bent pin connector, which can form a parallel outlet with the circuit board 351 to facilitate the plugging operation with the external circuit. The temperature measuring unit 352 is an NTC thermistor. The position monitoring unit 353 is an optoelectronic position sensor.

In one embodiment, referring to fig. 1 to 5, 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 and connecting with the housing 10. Therefore, the position accuracy between the body 34 and the shell 10 is ensured, and meanwhile, the eccentricity of the rotor assembly 20 caused by assembly can be reduced, and abnormal vibration and noise of the switched reluctance motor caused by the misalignment of the rotor assembly 20 are 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, the front end cover 11 is provided with a plurality of first bosses 111, the first bosses 111 are provided with first sockets 700, the rear end cover 12 is provided with a plurality of second bosses 121, the second bosses 121 are provided with second sockets 800, the front end cover 11 and the rear end cover 12 are provided at two sides of the body 34, and are respectively inserted into and positioned on the positioning bosses 342 through the first sockets 700 and the second sockets 800. Thus, through the above arrangement, a circumferential spigot can be formed between the shell 10 and the body 34 for positioning, the eccentricity of the rotor assembly 20 caused by assembly is further reduced, 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 to be fitted with the mounting holes 600. The mounting portion 900 may be a shaft structure that is 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 has a through-hole structure or a screw hole. The mounting hole 600 and the mounting portion 900 are inserted with a connecting member 40 to axially tension and fix the front cover 11 and the rear cover 12 relative 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, the first boss 111 is provided with a plurality of first attaching portions 1111 extending toward one side of the body 34 to form the first socket 700. The size that first laminating portion 1111 extends is 1 ~ 5mm, and the size that evades in first boss 111 promptly is 1 ~ 5mm, and the thickness of first laminating portion 1111 is 1 ~ 3 mm. The first fitting portion 1111 can be fitted to 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 fitting portions 1211 extending toward one side of the body 34 to form a second socket 800. The extension of the second bonding portion 1211 is 1-5 mm, that is, the protrusion of the second projection 121 is 1-5 mm, and the thickness of the second bonding portion 1211 is 1-3 mm. The second fitting portion 1211 can be fitted to the body 34 to achieve radial positioning between the rear end cap 12 and the body 34. In this embodiment, the body 34 is an octagon-like ring structure, the sides of the four corners of the body have arc surfaces, the positioning boss 342 is formed on the arc surfaces, and the first attaching portion 1111 and the second attaching portion 1211 are attached to the arc surfaces. In this embodiment, the width of the first and

second sockets

700 and 800 is 3-10 mm. The first boss 111 protrudes from the front end cover 11 by 3-15 mm. The size of the second boss 121 protruding out of the rear end cover 12 is 3-15 mm.

In an embodiment, referring to fig. 1, fig. 2, fig. 18 and fig. 19 together, the front cover 11 includes a front end surface 112 and a first circumferential surface 113, the first circumferential surface 113 is disposed around the front end surface 112 and extends from the front end surface 112 to the side of the body 34, the rear cover 12 includes a rear end surface 122 and a second circumferential surface 123, the second circumferential surface 123 is disposed around the rear end surface 122 and extends from the rear end surface 122 to the side of the body 34, the front end surface 112 and the rear end surface 122 are both provided with a first through hole 13, and the first circumferential surface 113 and the second circumferential surface 123 are both provided with a second through hole 14. So can make switched reluctance motor's axial and circumference all have the louvre with the setting of first through-hole 13 and second through-hole 14 to prevent that switched reluctance motor from receiving in circumference or axial and sheltering from, influence switched reluctance motor's heat dissipation. Further, in this embodiment, the rotating shaft 21 penetrates through the front end surface 112 and the rear end surface 122 and is rotatably connected with the front end surface 112 and the rear end surface 122 through the bearing 50, and the annular protrusions 15 for fixing the bearing 50 are arranged on the front end surface 112 and the rear end surface 122, so as to improve the connection stability of the bearing 50 with the front end surface 112 and the rear end surface 122.

In one embodiment, as shown in fig. 1, 18 and 19, the first through holes 13 are fan-shaped and evenly distributed around the rotation axis 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 is understood that in other embodiments, the first through holes 13 and the second through holes 14 may have other shapes, and the uniform distribution may be ensured. Further, the plurality of second through holes 14 form a group, and the second through holes 14 in each group are arranged at intervals of one side corresponding to one side of the body 34, 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 group of the second through holes 14 includes 3 to 15 second through holes 14. Further, a through groove 16 is formed in the housing 10, the phase line 321 can be led out from the through groove 16, and the circuit board 351 can be exposed from the housing 10 through the through groove 16. It is understood that in other embodiments, the number of through slots 16 may be multiple, for different phase line 321 leads and circuit board 351 exposed in the housing 10.

In one embodiment, referring to fig. 2 and 5 together, the stator mechanism 30 further includes a clamping assembly 36, and the clamping assembly 36 is used for clamping the phase wire 321 and leading out of the stator mechanism 30. So make phase line 321 not draw forth through circuit board 351 for the strong and weak electric 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 clip member 36 may be received in the channel 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, the first clamping portion 361 and the second clamping portion 362 are detachably connected and can be enclosed to form a plurality of lead slots 363, and each lead slot 363 is used for accommodating the phase lines 321 of different phases. Therefore, the phase lines 321 of different phases can be separated through the plurality of lead slots 363, and mutual interference is prevented.

In one embodiment, with continued reference to fig. 20, the lead groove 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 line pressing protrusion 364, and the line pressing protrusion 364 can extend into the lead groove 363 to abut the phase wire 321 at the bottom of the lead groove 363. So can guarantee through the setting of line ball arch 364 that phase line 321 can stabilize the centre gripping between first clamping part 361 and second clamping part 362, avoid phase line 321 to disturb switched reluctance motor's operation. In this embodiment, the lead groove 363 is formed on the first clamping portion 361, and the pressing protrusion 364 is formed on the second clamping portion 362.

In one embodiment, with reference to fig. 20, a receiving groove 365 is formed between adjacent wire pressing protrusions 364, and a groove wall of the wire guiding groove 363 can be partially received in the receiving groove 365. This allows the groove walls of the lead groove 363 and the lead protrusions 364 to be staggered to further enhance the isolation effect of the phase lines 321 of different phases. In this embodiment, the first clamping portion 361 and the second clamping portion 362 are further provided with through holes 366, and the phase line 321 can be clamped by the fasteners passing through the through holes 366 so as to be connected with the body 34. Further, the fastener is a threaded member.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.

Claims

1. A switched reluctance machine, comprising:

a housing;

a rotor assembly rotatably coupled to the housing; and

2. The switched reluctance motor of claim 1, wherein 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, which are oppositely disposed along the insertion direction, and extend toward a side away from the circumferential wall 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.

3. The switched reluctance machine of claim 2, wherein at least one of the first and second extensions is provided with a split slot for isolating phase lines of different phases of the coil.

4. The switched reluctance motor of claim 3, wherein the dividing slot is disposed on the first outward extending portion, and a first notch is disposed on a side of the first outward extending portion away from the circumferential wall to communicate the winding space with the dividing slot; and/or

5. The switched reluctance motor of claim 4, wherein the stator mechanism further comprises a body, the body has a polygonal-like ring structure, and each of the stator poles is received in a space defined by the body and is disposed on each side in a one-to-one correspondence.

6. The switched reluctance machine of claim 5, wherein a plurality of positioning bosses are provided on a side of the body away from the stator poles, and the positioning bosses are configured to be connected to the housing.

7. The switched reluctance machine of claim 6, wherein the body further comprises a mounting hole for axial locking with the housing.

8. The switched reluctance motor of claim 7, wherein the housing comprises a front cover and a rear cover, the front cover is provided with a plurality of first bosses, the first bosses are provided with first sockets, the rear cover is provided with a plurality of second bosses, the second bosses are provided with second sockets, the front cover and the rear cover are disposed on two sides of the body and are respectively inserted into and positioned by the first sockets and the second sockets and the positioning bosses.

9. The switched reluctance motor of claim 8, wherein the first boss and the second boss are provided with mounting portions to be fitted with the mounting holes.

10. The switched reluctance motor of claim 9, 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 can be attached to the body, 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 can be attached to the body.

11. The switched reluctance motor of claim 10, wherein the front cover comprises a front surface and a first circumferential surface, the first circumferential surface is disposed around the front surface and extends from the front surface to one side of the body, the rear cover comprises a rear surface and a second circumferential surface, the second circumferential surface is disposed around the rear surface and extends from the rear surface to one side of the body, the front surface and the rear surface are both provided with first through holes, and the first circumferential surface and the second circumferential surface are both provided with second through holes.

12. The switched reluctance motor of claim 11 wherein the stator mechanism further comprises a monitoring assembly, the monitoring assembly comprises a circuit board, a temperature measuring unit and a plurality of sets of position monitoring units, the temperature measuring unit is electrically connected to the circuit board, the circuit board is disposed on the body to abut the temperature measuring unit against one of the coils, the sets of position monitoring units comprise two position monitoring units, each of the position monitoring units is disposed around the rotating shaft of the rotor assembly and is electrically connected to the circuit board, and the position monitoring units are configured to monitor the rotating position of the rotor assembly.

13. The switched reluctance machine of claim 12 wherein the rotor assembly includes a shaft and rotor poles circumferentially disposed on the shaft, the rotor assembly further includes a plurality of monitoring portions, each of the monitoring portions corresponds to each of the rotor poles and is disposed on the shaft, the monitoring portions can sequentially pass through each of the position monitoring units as the shaft rotates, the monitoring portions have first and second edges disposed opposite to each other along a rotational path thereof, a first plane passing through a center line of one of the adjacent rotor poles and a rotational axis thereof is tangent to the first edge, and the second edge is disposed on a symmetry plane between the adjacent rotor poles.

14. The switched reluctance machine of claim 13, wherein 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 of the two position monitoring units in the same position monitoring unit group is located on a symmetrical plane between the adjacent stator poles.

15. The switched reluctance machine of claim 12, wherein the circuit board is disposed to the body through at least one of the insulators.

16. The switched reluctance machine of claim 4 wherein the stator mechanism further comprises a clamping assembly for clamping the phase wires and exiting the stator mechanism.

17. The switched reluctance machine of claim 16, wherein the clamping assembly comprises 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 lead slots, each of the lead slots being adapted to receive the phase wires of a different phase.