CN112821623A - Motor and disc winding assembly thereof - Google Patents

Abstract

The invention discloses a motor and a disc winding assembly thereof, wherein the disc winding assembly comprises a winding body and a winding integrally formed in the winding body in an injection molding mode, the winding comprises a plurality of circles of winding coils which are annular and coaxially nested, the plurality of circles of winding coils are mutually independent and are respectively provided with an independent wiring terminal. According to the invention, each circle winding coil is provided with an independent wiring terminal to form an independent winding, so that the space can be more effectively utilized, the area of the winding coil is increased, and the motor efficiency is improved; each circle winding can be independently connected with wires and used as motors with different power and different rotating speeds, and the conventional design that the existing winding coil can only be used as one motor is changed in principle. In addition, different windings on the same winding assembly can be used as a motor and a generator when one motor is used, so that the diversity of motor functions is greatly improved.

Description

Motor and disc winding assembly thereof

Technical Field

The invention relates to the technical field of generators, in particular to a motor and a disc type winding assembly thereof.

Background

The existing motor is generally a single-disc motor comprising a set of stators and two rotors located at two sides of the stators, or a multi-layer motor formed by connecting several single discs in series. In the multilayer motor, each single disc works independently, the utilization rate of the permanent magnet is low, and the motor efficiency is low.

In order to improve the conversion efficiency of electrical energy and mechanical energy, chinese patent CN205141955U discloses a coreless multi-layer motor, comprising: the rotor disc is clamped between the flange disc and the pressure disc and fixedly connected through bolts, and the outer rotor disc and the flange disc are connected with the output rotating shaft through flat keys. However, the scheme has low utilization rate of the winding, so that the magnetic flux is low, the conversion rate is low, and the motor efficiency is low.

In view of this, it is urgently needed to improve the structure of the existing motor so as to improve the utilization rate of the winding and improve the efficiency of the motor.

Disclosure of Invention

The invention aims to solve the technical problems of low utilization rate of the existing motor winding, low magnetic flux, low conversion rate and low motor efficiency.

In order to solve the technical problem, the technical scheme adopted by the invention is to provide a disc-type winding assembly, which comprises a winding body and a winding integrally injection-molded in the winding body, wherein the winding comprises a plurality of annular winding coils which are coaxially nested, and the plurality of winding coils are mutually independent and respectively provided with independent connecting terminals.

In the disc winding assembly, the connecting terminals respectively penetrate out of the central shaft hole of the winding body.

In the disc winding assembly, the winding coil is formed by connecting a plurality of fan-shaped winding units in series, the plurality of winding units are arranged in a ring shape at intervals, and in two adjacent turns of the winding coil, the number of the winding units positioned on the outer ring is more than that of the winding units positioned on the inner ring.

In the disc winding assembly, the winding coil is formed by serially connecting a plurality of fan-shaped winding units, the plurality of winding units are arranged in a ring shape at intervals, and in two adjacent circles of windings, the fan-shaped central angle of the winding unit positioned on the outer circle is larger than that of the winding unit positioned on the inner circle.

The invention also provides a motor, which comprises a motor shaft, a motor shell arranged on the motor shaft and the disc winding assembly, wherein at least one disc winding assembly is fixed on the motor shaft, and a plurality of circles of magnetic steel matched with the plurality of circles of winding coils on the winding assembly are arranged in the motor shell.

In the above motor, the motor shaft is fixed, and the motor housing rotates around the motor shaft; or,

the motor shell is fixed, and the motor shaft rotates;

or the motor shaft and the motor housing rotate separately and in opposite directions.

In the above motor, the motor housing is formed by fastening an upper end cover and a lower end cover, and the plurality of circles of magnetic steel corresponding to each circle of the winding coil include first magnetic steel respectively arranged on the upper end cover and the lower end cover.

In the above motor, the motor housing is provided with one of the winding assemblies.

In the motor, two or more winding assemblies are arranged in the motor shell, each winding assembly is arranged at intervals, a magnetic steel disc is arranged between every two adjacent winding assemblies, and the magnetic steel discs are fixed with the motor shell and provided with a plurality of circles of second magnetic steel matched with the winding coils.

In the above motor, further comprising a magnetic levitation device, the magnetic levitation device comprises:

the lower surface of the upper shell is fixedly provided with a first magnet, and the upper shell is fixed with the motor shell;

the lower shell is fixed on the motor shaft, a second magnet is fixedly arranged on the upper surface of the lower shell, and the homopolar poles of the first magnet and the second magnet are opposite.

Compared with the prior art, each circle winding coil is provided with an independent wiring terminal to form an independent winding, so that the space can be more effectively utilized, the area of the winding coil is increased, and the motor efficiency is improved; each circle winding can be independently connected with wires and used as motors with different power and different rotating speeds, and the conventional design that the existing winding coil can only be used as one motor is changed in principle. In addition, different windings on the same winding assembly can be used as a motor and a generator when one motor is used, so that the diversity of motor functions is greatly improved.

Drawings

Fig. 1 is a schematic view of a motor shown in embodiment 1;

FIG. 2 is a schematic view of a motor assembly according to embodiment 1;

FIG. 3 is a schematic view of an upper end cap in embodiment 1;

FIG. 4 is a view showing the outer shape of a winding assembly in embodiment 1;

FIG. 5 is a cross-sectional view of the winding assembly shown in FIG. 4;

FIG. 6 is a schematic view of a winding coil in the winding assembly of FIG. 4;

fig. 7 is a schematic view showing the arrangement of winding coils in a conventional winding assembly;

fig. 8 is a schematic diagram showing the arrangement of winding coils in the winding assembly according to embodiment 1 of the present invention;

fig. 9 is a schematic view of a winding assembly in embodiment 2 of the present invention;

FIG. 10 is a cross-sectional view of the winding assembly shown in FIG. 11;

fig. 11 is a schematic view of a motor according to embodiment 2 of the present invention;

FIG. 12 is a schematic view of a magnet steel disk of the present invention;

FIG. 13 is a cross-sectional view of the magnetic steel disk of FIG. 12;

FIG. 14 is an enlarged view of portion A of FIG. 11;

FIG. 15 is an enlarged view of portion B of FIG. 1;

FIG. 16 is a schematic structural diagram of embodiment 3 of the present invention;

FIG. 17 is a schematic structural diagram of embodiment 3 of the present invention;

fig. 18 is a schematic structural diagram of embodiment 3 of the present invention.

The correspondence between reference numbers and component names in fig. 1-18 is:

the motor comprises a motor shaft 100, a motor base 200, a base 300, a fastening screw 400, an elastic cushion 500 and a rib plate 600;

an upper end cover 101, a lower end cover 102, a first inner ring magnetic steel 103, a first outer ring magnetic steel 104,

an inner ring winding 111, an outer ring winding 112, an intermediate winding 113, an inner ring terminal 114, an outer ring terminal 115, an annular flange 116, an axial fixing hole 117, a winding fastening bolt 118, an annular shoulder 119,

the first winding unit 121, the second winding unit 122,

a magnetic steel disk body 131, a second inner ring magnetic steel 132, a second outer ring magnetic steel 133, a through hole 134,

outer sleeve 140, inner sleeve 150, retaining ring 160, bolt 170,

a first winding assembly 161, a second winding assembly 162, a third winding assembly 163, a first winding fastening bolt 164, a second winding fastening bolt 165,

the first bearing 181, the second bearing 182,

an upper housing 501, a lower housing 502, a first magnet 503, a second magnet 504, a fixing sleeve 505, and a bolt 506;

slip ring assembly 600, wire 610.

Detailed Description

The invention provides a motor and a disc type winding assembly thereof, which improve the utilization rate of winding coils and the efficiency of the motor. The invention is described in detail below with reference to the drawings and the detailed description.

As shown in fig. 1 and 11, the motor of the present invention includes a motor shaft 100 and a motor assembly disposed on the motor shaft 100.

The motor assembly includes a motor housing formed by fastening an upper end cap 101 and a lower end cap 102, and one or more winding assemblies disposed in an inner cavity of the motor housing, the winding assemblies being fixed to the motor shaft 100 to constitute a stator of the motor. The motor shell is fixedly provided with magnetic steel matched with the winding assembly, and the motor shell is driven by an external driving device to further drive the magnetic steel to rotate to form a rotor of the motor and rotate around the stator.

In one embodiment, the motor shaft 100 is stationary and forms the stator of the motor. The motor shell is driven by an external driving device to drive the magnetic steel to rotate relative to the winding assembly to form a rotor of the motor.

In another embodiment, the motor housing is fixed and forms the stator of the motor. The motor shaft 100 is driven by an external driving device to drive the winding assembly to rotate relative to the magnetic steel, thereby forming a rotor of the motor.

In another embodiment, the motor shaft 100 and the motor housing are driven by different driving devices, and the magnetic steel and the winding assembly rotate relatively to each other to form a double-rotor motor, as shown in fig. 15-17.

In the invention, the winding assembly adopts an injection molding structure, a plurality of circles (multilayer) of winding coils which are arranged in a ring shape and are coaxially nested are integrally injected and molded in a winding body, and each circle of winding coils are provided with independent connecting terminals to form mutually independent winding coils. The winding coil of each circle is formed by connecting a plurality of fan-shaped winding units in series, the plurality of winding units are arranged at intervals to form a ring shape, and in two adjacent circles of winding coils, the fan-shaped central angle of the winding unit positioned on the outer circle is larger than that of the winding unit positioned on the inner circle, or the number of the winding units positioned on the outer circle is larger than that of the winding units positioned on the inner circle.

Example 1.

This embodiment 1 is a configuration in which only one winding assembly is provided in the motor case.

Referring to fig. 1 to 6, fig. 1 is a schematic diagram of a motor according to embodiment 1, fig. 2 is a schematic diagram of a motor component according to embodiment 1, fig. 3 is a schematic diagram of an upper end cap according to embodiment 1, fig. 4 is an external view of a winding component according to embodiment 1, fig. 5 is a cross-sectional view of the winding component shown in fig. 4, and fig. 6 is a schematic diagram of a winding coil in the winding component shown in fig. 4.

As shown in fig. 1, an electric motor according to embodiment 1 of the present invention includes a motor assembly disposed on a motor shaft 100, the motor assembly includes a motor housing formed by fastening an upper end cap 101 and a lower end cap 102, and a winding assembly disposed in an inner cavity of the motor housing, and the winding assembly is fixed on the motor shaft 100. The upper end cover 101 and the lower end cover 102 are respectively provided with first magnetic steel matched with the winding assembly.

As shown in fig. 2 to 6, the motor housing is formed by oppositely fastening an upper end cover 101 and a lower end cover 102, the winding assembly is formed by coaxially surrounding two windings of an inner winding 111 and an outer winding 112, the inner winding 111 and the outer winding 112 are spaced apart from each other and are independent of each other, and the inner winding 111 and the outer winding 112 are respectively provided with an inner winding terminal 114 and an outer winding terminal 115.

The inner ring winding 111 is formed by sequentially connecting a plurality of fan-shaped first winding units 121 in series, the plurality of first winding units 121 are arranged in a ring shape at intervals, the outer ring winding 112 is formed by sequentially connecting a plurality of fan-shaped second winding units 122 in series, and the plurality of second winding units 122 are also arranged in a ring shape at intervals.

In the present embodiment, the number of the second winding units 122 is greater than that of the first winding units 121, whereby the outer ring space of the winding body is fully utilized.

In addition, the number of the second winding units 122 may be the same as the number of the first winding units 121, but the sector central angle of the second winding unit 122 may be larger than the sector central angle of the first winding unit 121, and the outer ring space of the winding body may be also sufficiently utilized.

Correspondingly, the first magnetic steel includes a first inner ring magnetic steel 103 and a first outer ring magnetic steel 104, which are respectively and fixedly disposed on the upper end cover 101 and the lower end cover 102. Taking the upper end cover shown in fig. 3 as an example, the first inner ring magnetic steel 103 and the first outer ring magnetic steel 104 are respectively disposed on the lower surface of the upper end cover 101, and the number of the first outer ring magnetic steel 104 is greater than that of the first inner ring magnetic steel 103.

Therefore, the inner ring winding 111 and the first inner ring magnetic steel 103 form an inner ring motor, the outer ring winding 112 and the first outer ring magnetic steel 104 form an outer ring motor, and the inner ring motor and the outer ring motor are two independent motors independent of each other. The conventional design that the existing winding coil can only be used as a motor is changed from the principle.

Be equipped with annular shaft shoulder 119 on motor shaft 100, be equipped with the screw hole of a plurality of axial settings on annular shaft shoulder 119, the screw hole is the annular and arranges, and winding assembly's shaft hole one end is equipped with annular flange 116, is equipped with a plurality of axial fixity hole 117 on the annular flange 116, and axial fixity hole 117 corresponds the setting with the screw hole. The winding assembly is sleeved on the motor shaft 100, the inner end surface of the annular flange 116 abuts against the annular shoulder 119, and then the winding assembly is fixed on the annular shoulder 119 on the motor shaft 100 by passing a winding fastening bolt 118 through an axial fixing hole 117 on the annular flange 116 and fixing the winding fastening bolt in a threaded hole on the annular shoulder 119.

Referring to fig. 7 and 8, fig. 7 is a conventional winding form, and fig. 8 is a winding form in the present invention, in which hatched portions are winding coils.

In the conventional winding form shown in fig. 7, the dashed line is a reference line, and in view of the characteristics of the multi-pole winding, for the winding coil wound along the fan-shaped frame in the fan-shaped area, the S1 part of the inner coil is usually not available, so that the coil is wound only in the S2 part, and the S1 part is wasted. In the winding provided by the present invention as shown in fig. 8, the inner coil S1 can be designed as another independent coil with a smaller fan angle, so that the inner coil S1 is used, and the area occupied by the winding coil is S1+ S3. Through comparison, the scheme provided by the invention can more fully utilize the inner ring space of the winding body and increase the area of the winding coil. Therefore, the winding assembly provided by the invention increases the magnetic flux and improves the efficiency.

The arrangement of the winding coils can be selected according to the winding diameter, the coil circle number and the like.

In the embodiment, the inner ring motor and the outer ring motor can be connected separately and used as motors with different powers and also can be used as motors with different rotating speeds; in addition, when one motor is used as a motor, the other motor can also be used as a generator, and the diversity of the functions of the motor is greatly improved.

Example 2.

This embodiment 2 is a further improvement of the winding assembly in embodiment 1, and as shown in fig. 9 and 10, the number of winding coils is increased from two inner and outer turns to three, that is, an intermediate winding 113 is additionally arranged between the inner winding 111 and the outer winding 112. An intermediate winding 113 is additionally arranged between the inner ring winding 111 and the outer ring winding 112, is mutually independent and is respectively provided with an independent connecting terminal.

In the invention, the winding assembly adopts the structural form of the inner winding, and the inner winding terminal 114 of the inner winding 111 and the outer winding terminal 115 of the outer winding 112 both penetrate out of the shaft hole of the winding assembly, as shown in fig. 4, 5 and 6.

Example 3.

This embodiment 3 is a modification of embodiment 1, and as shown in fig. 11, in this embodiment 3, a first, a second and a third winding assemblies 161, 162 and 163 having the above-described structures are provided in the motor housing.

The first, second and third winding assemblies 161, 162 and 163 are spaced apart, and a magnetic steel disk 130 is disposed between the adjacent two winding assemblies. As shown in fig. 12 and 13, the magnetic steel disk 130 is an injection molding structure, and includes a magnetic steel disk body 131 and a second magnetic steel injection-molded on the magnetic steel disk body 131, where the second magnetic steel includes a second inner ring magnetic steel 132 and a second outer ring magnetic steel 133, and the second inner ring magnetic steel 132 and the second outer ring magnetic steel 133 are respectively disposed corresponding to the inner ring winding 111 and the outer ring winding 112 on the winding assembly.

A plurality of through holes 134 are uniformly distributed at the outer edge of the magnetic steel disc 130 along the circumferential direction, through holes corresponding to the through holes 134 are also respectively arranged at the outer edges of the upper end cover 101 and the lower end cover 102, outer sleeves 140 are respectively arranged between adjacent magnetic steel discs and between the magnetic steel disc and the upper end cover 101 and between the magnetic steel disc and the lower end cover 102, and the upper end cover 101, the outer sleeves 140, the magnetic steel disc 130 and the lower end cover 102 are fixed together through bolts 150 to form the motor shell.

The assembly process of the three winding assemblies of the present invention is described below with reference to fig. 14.

As shown in fig. 14, an annular shoulder 119 is disposed on the motor shaft 100, a plurality of axially disposed threaded through holes are disposed on the annular shoulder 119, the first winding assembly 161 is sleeved on the motor shaft 100 from top to bottom, and the lower end surface of the annular flange 116 abuts against the upper step surface of the annular shoulder 119, and then passes through the axial fixing hole 117 on the annular flange 116 and is fixed in the threaded through hole on the annular shoulder 119 by the first winding fastening bolt 164, so that the first winding assembly is fixed above the annular shoulder 119 on the motor shaft 100.

The second winding assembly 162 is sleeved on the motor shaft 100 from bottom to top, the upper end face of the annular flange 116 abuts against the lower step face of the annular shaft shoulder 119, an inner sleeve 150 is arranged between the first winding assembly 161 and the second winding assembly 162, the inner sleeve 150 is sleeved on the annular shaft shoulder 119, the thickness of the inner sleeve 150 is larger than that of the magnetic steel disc, so that a gap between the first winding assembly 161 and the second winding assembly 162 is ensured, and the magnetic steel disc can flexibly rotate.

A positioning ring 160 is disposed below the second winding assembly 162, and the positioning ring 160 is disposed on the motor shaft 100 and below the annular shoulder 119. The retaining ring 160 is provided with a retaining ring through hole corresponding to the axial securing hole 117 in the winding assembly.

The third winding assembly 163 is disposed below the positioning ring 160, and the second and third winding assemblies are fixed below the annular shoulder 119 on the motor shaft 100 by passing the annular flange of the third winding assembly 163, the positioning ring, and the annular flange of the second winding assembly through the threaded through holes in the annular shoulder 119 in this order by the second winding fastening bolt 165.

In this embodiment, the retaining ring is disposed below the annular shoulder 119, although it could be disposed above.

And more winding assemblies can be assembled by increasing the number of the positioning rings.

Although the above embodiments have been described with reference to the vertical motor as an example, the present invention is not limited to the vertical motor, and is also applicable to the horizontal motor.

Example 4.

This embodiment 4 is a further improvement made on the basis of embodiments 1 and 3, and a magnetic suspension device is provided on the shaft seat of the motor base 200 to reduce the pressure of the motor assembly and improve the motor efficiency. This scheme is applicable to the upright motor structure.

As shown in fig. 1 and 11, the motor shaft 100 is vertically inserted into a shaft hole of the upper shaft seat of the motor base 200 and is radially fixed to the upper shaft seat of the motor base 200 by a fastening screw 400, thereby forming a motor with a vertical structure.

The magnetic suspension device is composed of an upper shell 501 and a lower shell 502, a first magnet 503 is fixedly arranged on the lower surface of the upper shell 501, a second magnet 504 is fixedly arranged on the upper surface of the lower shell 502, and the first magnet 503 and the second magnet 504 are annular and arranged in a manner that the same poles are opposite.

As shown in fig. 15, the upper housing 501 is fixed to the lower end cap 102 of the motor housing and rotates together with the lower end cap 102 of the motor housing. An annular boss is arranged on the bottom surface of the upper shell 501, the first magnet 503 is arranged inside the annular boss, an annular fixing sleeve 505 is sleeved on the outer ring of the annular boss, and the fixing sleeve 505 and the upper shell 501 are fixed into a whole through a bolt 506. The lower housing 502 is fixed on the outer circumferential surface of the upper shaft seat of the motor base 200, and a gap is provided between the outer circumferential surface of the lower housing 502 and the inner wall of the fixing sleeve 505, so that the upper housing 501 and the lower housing 502 can rotate.

Go up casing 501 and lower casing 502 cooperation and form the structure of magnetic suspension, according to the principle that the homopolar repulsion of magnet, lower casing 502 has the effect of an ascending thrust to last casing 501, act on lower extreme cover 102, the pressure of lower extreme cover 102 to motor cabinet 200 has been reduced, make the rotation of upper extreme cover 101 and lower extreme cover 102 more smooth, the friction has been reduced, the rotational speed of motor casing has been improved indirectly, the motor efficiency has been promoted, it is high to have energy utilization, the characteristics that the motor stability factor is big.

In the magnetic suspension structure, the upper shell 501 is fixed with the lower end cover 102 of the motor shell, the lower shell 502 is fixed with the motor base 200, for the rotation form of the motor shell, the upper shell 501 rotates along with the motor shell, and the lower shell 502 and the motor shaft 100 are kept fixed; for the form of motor shaft rotation, the upper housing 501 remains stationary with the motor housing, and the lower housing 502 rotates with the motor shaft 100.

The lower housing 502 is connected with the shaft seat of the motor base 200 by threads, so that the upper and lower positions can be conveniently adjusted, the magnitude of magnetic levitation force can be adjusted, and after the position is adjusted properly, the upper housing 501 and the lower housing 502 are respectively fixed with the shaft seat of the motor base 200 by fastening bolts.

In the present invention, it is preferable that a first bearing 181 is provided between the upper end cap 101 and the motor shaft 100, and a second bearing 182 is provided between the lower end cap 102 and the motor shaft 100. The upper end cover 101 and the lower end cover 102 are supported by the first bearing 181 and the second bearing 182, so that friction is effectively reduced, loss of mechanical energy is reduced, and motor efficiency is improved. Wherein the first bearing 181 may be a tapered roller bearing, and the second bearing 182 may be a deep groove ball bearing.

In an embodiment of the present invention, preferably, a plurality of rib plates 600 are disposed on the motor base 200 to facilitate strengthening the stability of the motor base 200 and improve the overall stability and reliability of the motor. Wherein, the number of the rib plates 600 can be 6, and the rib plates are uniformly arranged at intervals.

In an embodiment of the present invention, preferably, a base 300 is disposed below the motor base 200, the motor base 200 is fixed on the base 300, and an elastic pad 500 is disposed between the base 300 and the motor base 200 to reduce vibration generated during operation of the motor and improve overall stability of the motor.

In one embodiment of the present invention, the motor shaft 100 is preferably a hollow structure, which can reduce weight and improve motor efficiency.

Examples 5, 6 and 7.

The embodiments 5, 6 and 7 provide solutions that the winding assemblies and the motor housing can be driven by different driving devices to rotate relatively, respectively, to form a dual-rotor motor, as shown in fig. 15 to 17.

In which figure 16 shows a dual rotor motor having a single set assembly 161.

Fig. 17 shows a double-rotor motor having two winding assemblies, a first winding assembly 161 and a second winding assembly 162.

Fig. 18 shows a double-rotor motor having three winding assemblies, a first winding assembly 161, a second winding assembly 162, and a third winding assembly 163.

The above three structural forms are applied to a double-rotor motor with winding assemblies and a motor shaft respectively driven by different driving devices, wherein the winding assemblies and the motor shaft are opposite to each other in rotation direction.

The outer circumferential surface of the motor base 200 is provided with a slip ring device 600, and the connection terminal of the winding assembly is connected with the slip ring device 600 through a lead 610.

The dual rotor motor shown in fig. 16-18 can also be provided with the magnetic levitation device of fig. 1 or fig. 11. The single rotor machines shown in fig. 1 and 11 may also be provided with the slip ring arrangements of fig. 16-18.

In combination with the above description of the specific embodiments, compared with the prior art, the present invention has the following advantages:

firstly, the winding assembly is formed by integrally injection molding winding coils which are arranged in a ring shape in a plurality of layers (a plurality of circles) which are coaxially nested in the radial direction, and each circle of winding coil is provided with an independent terminal to form an independent winding. The space can be more effectively utilized, the area of the winding coil is increased, and the motor efficiency is improved.

Secondly, each circle winding can be independently connected and used as a motor with different power and a motor with different rotating speed, and the conventional design that the existing winding coil can only be used as one motor is changed in principle.

And thirdly, different windings on the same winding assembly can be used as a motor and a generator when one motor is used, so that the diversity of motor functions is greatly improved.

Fourthly, the magnetic suspension device is arranged below the motor shell, so that the pressure of the motor assembly can be reduced, and the motor efficiency is improved.

Fifthly, the reasonable structure is adopted to realize the assembly of a plurality of winding assemblies, the structure is simple, and the assembly is convenient.

In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The present invention is not limited to the above-mentioned preferred embodiments, and any structural changes made under the teaching of the present invention shall fall within the scope of the present invention, which is similar or similar to the technical solutions of the present invention.

Claims (10)

1. The disc type winding assembly comprises a winding body and is characterized by further comprising a winding which is integrally injection-molded in the winding body, wherein the winding comprises a plurality of annular winding coils which are coaxially nested, the plurality of winding coils are mutually independent and are respectively provided with an independent wiring terminal.

2. The disc winding assembly of claim 1 wherein the terminals each extend through a central axial bore of the winding body.

3. The disc winding assembly according to claim 1, wherein the winding coil is formed by serially connecting a plurality of fan-shaped winding units, the plurality of winding units are arranged in a ring shape at intervals, and the number of the winding units positioned at the outer ring is greater than that of the winding units positioned at the inner ring in two adjacent turns of the winding coil.

4. The disc winding assembly according to claim 1, wherein the winding coil is formed by serially connecting a plurality of sector-shaped winding units, the plurality of winding units are arranged in a ring shape at intervals, and in two adjacent turns of the winding, a sector central angle of the winding unit positioned at an outer circle is larger than a sector central angle of the winding unit positioned at an inner circle.

5. An electric machine comprising a motor shaft and a motor housing disposed on said motor shaft, and further comprising at least one disc winding assembly according to any one of claims 1-4, said disc winding assembly being secured to said motor shaft, said motor housing having a plurality of turns of magnetic steel matching a plurality of turns of said winding coil on said winding assembly.

6. The electric machine of claim 5,

the motor shaft is fixed, and the motor shell rotates around the motor shaft; or,

the motor shell is fixed, and the motor shaft rotates;

or the motor shaft and the motor housing rotate separately and in opposite directions.

7. The electric motor of claim 5, wherein said motor housing is fastened by an upper end cover and a lower end cover, and a plurality of turns of said magnetic steel corresponding to each circle of said winding coil comprise first magnetic steel provided on said upper end cover and said lower end cover, respectively.

8. The electric machine of claim 7 wherein said motor housing has said winding assembly disposed therein.

9. An electric machine as claimed in claim 7, wherein two or more winding assemblies are provided in said machine housing, each winding assembly being spaced apart and a magnetic steel disc being provided between adjacent two winding assemblies, said magnetic steel disc being secured to said machine housing and being provided with a plurality of turns of second magnetic steel matching each turn of said winding coil.

10. The electric machine of claim 5, further comprising a magnetic levitation device, the magnetic levitation device comprising:

the lower surface of the upper shell is fixedly provided with a first magnet, and the upper shell is fixed with the motor shell;

the lower shell is fixed on the motor shaft, a second magnet is fixedly arranged on the upper surface of the lower shell, and the homopolar poles of the first magnet and the second magnet are opposite.

Images