CN112448555A

CN112448555A - External disk motor with barrier stator

Info

Publication number: CN112448555A
Application number: CN201910795877.7A
Authority: CN
Inventors: 黄思伦
Original assignee: Shenzhen Shanxiang Intelligent Technology Enterprise LP
Current assignee: Shenzhen Shanxiang Intelligent Technology Enterprise LP
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2021-03-05

Abstract

The invention discloses a disc motor and a motor/generator with a fence type H-shaped stator, which comprise a pivot, a disc type outer rotor and a fence type H-shaped stator; the large slits on the upper and lower parts of each H-shaped iron core of the fence type H-shaped stator form four angle bodies, and the contact surface is reduced through the outer rotor permanent magnet and the stator iron core body, so that the starting current is reduced. The coils can be wound on the four horns, wherein any two groups of the coils are short-circuited coils, and the other two groups of the coils are connected motor coil windings; through the magnetic fluxes on the two sides of the magnetic poles or the oblique magnetic fluxes, the orthogonal vectors are effectively concentrated, so that the excitation magnetic fluxes are concentrated and distributed at the tips of the four corner magnetic poles, the magnetic flux offset is kept, and the purposes of reducing the starting current, improving the cogging torque and improving the high-speed rotation efficiency are achieved; in addition, the H-shaped iron core comprises a motor coil winding and a power generation coil winding, so that magnetic induction caused by kinetic energy can be effectively converted into electric energy to be output and stored, and the purpose of electric energy recovery is achieved.

Description

External disk motor with barrier stator

Technical Field

The invention relates to the field of electric energy recovery of an outer disc type motor and a generator, in particular to a disc type motor with a fence type H-shaped stator and a motor/generator.

Background

In a conventional permanent magnet ac servomotor 9, as shown in fig. 1, a permanent magnet 91 is disposed at a rotor 92 of an outer layer of the motor, and an armature coil winding 93 is disposed at a stator 94 of a core, so that it is difficult to easily dissipate heat generated by a resistance when a current passes through the armature coil winding or sudden heat generated when a current is jumped in a phase change process; and because of being limited by the inner-layer and outer-layer coating type structural design, the strain elasticity is reduced when the problems of output torque change, installation space limitation and the like are faced.

The structure of the disc type motor is basically the same as that of a common permanent magnet motor, and the disc type motor also comprises: the disc motor comprises a stator, a rotor and a shell, and is characterized in that the rotor of the disc motor is usually a permanent magnet, an excitation coil arranged on a stator iron core body generates a magnetic field, and repulsion and pulling forces are generated on the rotor to drive the permanent magnet rotor to rotate. Because the permanent magnet rotor is magnetically coupled, it passively interacts with the stator magnetic field. Therefore, not only the pulling force but also the repulsive force can be generated between the stator and the rotor, and since the magnetic pulling force and the repulsive force are different, the difference between the large and small quantities is obtained, and the difference between the positive and negative is obtained. Because the rotor permanent magnet can absorb the stator iron core body when the motor is not started, when the motor is started, the coil of the stator iron core body needs larger starting current to generate pulling force and pushing force, and larger cogging torque can be generated during operation.

The starting current problem of the disc motor has not found an effective solution for a long time, so that the efficiency of the disc motor at high speed is difficult to improve. As shown in fig. 2, although the disc motor 8 is known to have the structure of the disc outer rotor 81, it does not solve the above-mentioned problems of heat generation and energy consumption. Furthermore, the lack of a proper match between the number of permanent magnets 82 and the number of coil windings 83 also results in a non-uniform action of the magnetic circuit, which may result in a rotational non-uniformity condition with an insignificant output force during each action cycle.

The disc motor reduces magnetic attraction, and the design of rotating speed is improved mainly through reducing the great distance in interval of permanent magnet rotor and stator iron core body, or dwindles the contact surface, reduces rotor permanent magnet magnetic attraction and reduces starting current, but only is applicable to high-speed and low torsion, restricts its application occasion. The following can be derived from the theory of electromagnetic field: the unit volume torque of the motor is in direct proportion to the flux variation under the condition that other conditions are not changed. Because of the starting current, after the number of the rotor permanent magnets is larger than a certain number, the contact surface between the rotor permanent magnets and the stator iron core body is reduced along with the increase of the number of the rotor permanent magnets, the starting current is reduced by times, so that the reduction of the magnetic flux amplitude of the stator iron core body is equivalent to the reduction of the volume of the stator iron core body, and the output torque cannot increase along with the increase of the number of the slots.

The magnetic attraction or starting current of the magnetic circuit of the stator iron core body and the permanent magnet in the starting process is improved, the distance between the permanent magnet and the magnetic circuit of the stator iron core body is increased in the prior art, namely the length of an air gap is increased, and the defects that the efficiency of the motor is reduced and the torsion is reduced due to the increase of the magnetic resistance of the air gap are overcome.

In the permanent magnet motor, in a high-speed region, a larger current needs to flow into the electromagnet of the magnetic circuit of the stator core, and a magnetic flux opposite to the permanent magnet magnetic flux is generated. Since the induced voltage of the electromagnet of the magnetic circuit of the stator core body will rise to the upper limit of the power supply voltage as the rotation speed of the motor increases, the rotation speed cannot be increased further. However, the higher the current flowing in is not conducive to an increase in motor torque, and the higher the current ultimately used, the lower the efficiency. Therefore, how to increase the speed or decrease the amount of the starting current becomes a major research topic in the present disc motor.

In view of the above, the inventor of the present invention, after designing and evaluating in detail the external disk motor with the barrier stator of taiwan patent publication No. L664794 (application No. 107103798), has found practical applicability.

Disclosure of Invention

An object of the present invention is to provide a disc motor with a barrier H-shaped stator, which mainly uses the design of large slits on the top and bottom of the H-shaped iron core body to reduce the contact area between the rotor permanent magnet and the stator iron core body, so as to reduce the starting current and improve the efficiency of the high-speed area.

In order to achieve the purpose, the technical means adopted by the method is as follows: there is provided a disc motor having a barrier type H-shaped stator, comprising at least:

an axially extending pivot shaft;

the disc type outer rotor is arranged in parallel, each disc type outer rotor comprises a disc body and an even number of permanent magnets, the disc bodies are fixedly arranged on the pivot shaft vertically by the centers of the disc bodies, the even number of permanent magnets are arranged on the disc bodies, the disc bodies are arranged on the disc bodies in an annular mode by taking the disc bodies as the centers, every two adjacent permanent magnets on each disc body are arranged by the same magnetic pole, and the permanent magnets in the disc bodies of the two disc type outer rotors are arranged oppositely by different magnetic poles;

a group of fence type H-shaped stators, including multiple H-shaped iron cores, each H-shaped iron core body has big slits up and down, making the body form four angle bodies up and down, wherein the H-shaped iron core body is located between the big slits up and down and winding the motor coil winding in a transverse mode, and multiple H-shaped iron cores use the pivot as the centre of circle respectively, and are arranged in parallel and uniformly along the axial direction, two poles of each of the four angle bodies of each H-shaped iron core are respectively connected to the permanent magnets in the two disk type outer rotors, and the number of the H-shaped iron cores is one time and less than two times of the number of the permanent magnets, or the number of the H-shaped iron cores is less than 0.5 times of the number of the permanent magnets;

a rotor position sensing assembly for measuring the position of the permanent magnet of the disc type outer rotor and outputting at least one position signal; and

an enabling controller, which provides an alternating current frequency type driving signal to the motor coil winding according to the received position signal, and makes the frequency type driving signals of every two adjacent motor coil windings have a uniform phase difference respectively, and the sum of the phase differences between all the adjacent motor coil windings of the group of the fence type stators is a non-zero integral multiple of 360 degrees.

The invention relates to a disc motor with a fence type H-shaped stator, which mainly uses the structure that a group of fence type H-shaped stator iron cores are arranged between every two disc type outer rotors which are arranged in parallel, and uses the design of upper and lower large slits of an H-shaped stator iron core body to magnetize the main magnetic flux of the H-shaped iron core by the alternating current frequency type driving signal of a coil on a stator iron core body to generate distortion offset, so that the distortion offset is effectively and uniformly concentrated on two sides and distributed at the tip parts of four corner magnetic poles, the orthogonal quantity of the main magnetic flux of the H-shaped iron core magnetized by the alternating current frequency type driving signal and a permanent magnet is increased, the magnetic flux offset is kept, the starting current is reduced, and the efficiency of a high. The magnetic attraction force between the permanent magnet of the rotor and the iron core body of the stator is reduced, and the starting current of the motor is reduced.

In the above-mentioned disk motor with fence type H-shaped stator, it is further characterized in that the said group of fence H-shaped stators includes a plurality of H-shaped iron cores, wherein each of the said H-shaped iron cores has large slits on the top and bottom to make the body form four horns, the four horns are respectively wound with coils, wherein the coils on the two horns on one side and the two corners on the other side are wound in a transverse manner to form a motor coil winding, and the coils on the two horns on the other side and the two corners on the other side are respectively wound into short circuit coils.

Another objective of the present invention is to provide a disc motor with a barrier-type H-shaped stator, which mainly penetrates through four horns formed by the large slits on the top and bottom of the H-shaped iron core body, coils are respectively wound on the four horns, coils on two horns on one side of the two horns opposite to each other are wound in a transverse manner to form a motor coil winding, and coils on two horns opposite to each other on the other side are respectively wound to form short-circuit coils; therefore, in the starting process of the motor rotor, the composite magnetic flux flowing through the air gaps of the stator and the rotor is oblique magnetic flux or is positioned on two sides of the magnetic poles, and the magnetic flux can effectively and intensively generate orthogonal vectors with the magnetic flux of the rotor permanent magnet, so that excitation magnetic flux is intensively distributed at the tips of the four corner magnetic poles, the magnetic flux offset is kept, the permanent magnet rotor can be easily pushed, the starting current in the starting process is reduced, the cogging torque of the disc motor is improved, and the high-speed efficiency of the disc motor is improved.

an axially extending pivot shaft;

the disc type outer rotor is arranged in parallel, each disc type outer rotor comprises a disc body and an even number of permanent magnets, the disc bodies are fixedly arranged on the pivot shaft vertically by the centers of the disc bodies, the even number of permanent magnets are arranged on the disc bodies, the disc bodies are arranged on the disc bodies in an annular mode by taking the disc bodies as the centers, every two adjacent permanent magnets on each disc body are arranged by the same magnetic pole, and the permanent magnets in the disc bodies of the two disc type outer rotors are arranged oppositely by the same magnetic pole;

a group of fence type H-shaped stators, including several H-shaped iron cores, each H-shaped iron core body has big slits up and down, making the body form four angle bodies, winding coils on the four angle bodies, wherein, the coils on two angle bodies at one side are wound in transverse mode to form motor coil windings, the coils on two angle bodies at the other side are wound into short circuit coils, several H-shaped iron cores take the pivot as the centre of circle, and are arranged parallel to each other along the axial direction, the two poles of the four angle bodies of each H-shaped iron core are connected to the permanent magnets in the two disc type outer rotors, the number of H-shaped iron cores is more than one time and less than two times of the number of permanent magnets, or the number of H-shaped iron cores is less than 0.5 times of the number of permanent magnets;

The present invention provides a disc motor/generator with a barrier-type H-shaped stator, which mainly comprises four horns formed by the large slits on the upper and lower sides of the H-shaped core body, wherein the four horns are wound with coils, wherein the coils on the two horns on one side of the H-shaped core body are wound in a transverse manner to form a motor coil winding, the coils on the two horns on the other side of the H-shaped core body are wound in a short-circuit manner, and the power generation coil winding is wound on the large slits on the upper and lower sides of the H-shaped core body in a longitudinal manner The high-speed rotation efficiency and the electric energy recovery are improved.

In order to achieve the above object, the present invention adopts the following technical means: there is provided a disc motor/generator with a barrier H-type stator comprising at least:

an axially extending pivot shaft;

a set of fence type H-shaped stator comprises a plurality of H-shaped iron cores, wherein each H-shaped iron core body is provided with large slits at the upper and lower parts, so that the upper and lower parts of the body form four angle bodies, the four angle bodies are respectively wound with coils, wherein the coils on the two angle bodies at one diagonal are wound in a transverse mode to form a motor coil winding, the coils on the two angle bodies at the other diagonal are respectively wound to form short-circuit coils, the generating coil winding is longitudinally wound at the upper and lower large slits of the H-shaped iron core body, and a plurality of H-shaped iron cores respectively take the pivot as the circle center, the two poles of the four angle bodies of each H-shaped iron core are respectively close to and correspond to the permanent magnets in the two disc type outer rotors, and the number of the H-shaped iron cores is one time and less than two times larger than that of the permanent magnets, or the number of the H-shaped iron cores is less than 0.5 time of that of the permanent magnets;

a rotor position sensing assembly for measuring the position of the permanent magnet of the disc type outer rotor and outputting at least one position signal;

an enabling controller, for providing an alternating current frequency type driving signal to the motor coil winding according to the received position signal, and enabling the frequency type driving signals of every two adjacent motor coil windings to have a uniform phase difference, and the sum of the phase differences between all the adjacent motor coil windings of the group of the fence type stators is a non-zero integral multiple of 360 degrees; and

and the electric energy recovery loop is used for receiving and storing the electric energy generated by the generating coil winding.

In the above-mentioned disk motor and motor/generator with the H-shaped stator, each H-shaped iron core is formed by stacking a plurality of oriented silicon steel sheets into a circular or square column shape.

In the above disc motor and motor/generator with the H-shaped stator, the H-shaped stator further includes two non-magnetic-conductive stator bases for holding the H-shaped iron core.

In the above-described disk motor and motor/generator having the H-shaped stator of the barrier type, the shortest distance between the top of the four horns of the H-shaped core and the adjacent corresponding permanent magnets is smaller than the thickness of the disk.

The invention relates to a disc motor and a motor/generator with a fence type H-shaped stator, which comprises two disc type outer rotors which are arranged in parallel and a group of fence type H-shaped stators, wherein the distance of an air gap is reduced by skillful arrangement of the rotors and the stators and the series connection of a pivot, so that the magnetic flux mainly passes through an H-shaped iron core and a permanent magnet to form a loop, and a generating coil winding is longitudinally wound at the upper and lower large slits on the H-shaped iron core of the fence type H-shaped stator, so that the magnetic flux path can still be kept smooth when the generator is used, the magnetic resistance is reduced, and the generating efficiency is improved; and because the numbers of the permanent magnets and the H-shaped iron cores are matched with each other, a magnetic loop is formed together, and the rotors run smoothly by matching with frequency type driving signals with specific phase difference; in particular, by combining the structural characteristics that the number of the H-shaped iron cores is one time and less than two times of the number of the permanent magnets or the number of the H-shaped iron cores is less than 0.5 time of the number of the permanent magnets, each permanent magnet is matched with a complete magnetic loop, the energy conversion efficiency of the motor/generator is effectively improved, and all the purposes are achieved.

Drawings

Fig. 1 is a schematic diagram of a conventional outer rotor permanent magnet ac servo motor, illustrating a relative position relationship between a stator and a rotor of the motor;

FIG. 2 is a schematic diagram of a conventional disc motor, illustrating the relationship between the permanent magnets and the coils;

FIG. 3 is an exploded perspective view of the preferred embodiment of the present invention, illustrating the relative positions of the pivot, the two disk outer rotors, the disks, the permanent magnets, the barrier H-shaped stator, the H-shaped iron core and the stator base;

FIG. 4 is a schematic diagram of a circular column shape of the H-shaped iron core;

FIG. 5 is a schematic diagram of a square column shape of the H-shaped iron core;

FIG. 6 is a schematic diagram showing the relative relationship between the permanent magnets and the motor coil winding transversely wound between the large slits and the large slits, wherein the permanent magnets are adjacent and have the same polarity and the opposite positions have different polarities;

FIG. 7 is a schematic cross-sectional view of the permanent magnet of FIG. 6 and the variation of the magnetic field generated inside the H-shaped core;

FIG. 8 is a schematic diagram showing the relative relationship between the permanent magnets and the short-circuit coils wound around the coils A-C on the other side of the H-shaped core body D-B;

FIG. 9 is a schematic diagram showing the relative relationship between the permanent magnets and the short-circuit coils wound around the same side of the H-shaped core body A-C and the short-circuit coils wound around the same side of the core body B-D;

FIG. 10 is a schematic diagram showing the relative relationship between the short-circuit coil and the permanent magnet formed by winding the diagonal body coils of the H-shaped core bodies C-D connected to form the motor coil winding and the diagonal body A-B coils of the other side respectively;

FIG. 11 is a schematic diagram showing the relative relationship between the permanent magnets and the short-circuit coils wound around the diagonal angle bodies A-B of the H-shaped core body, wherein the permanent magnets are adjacent and have the same polarity and the same polarity at the opposite positions, and the short-circuit coils and the permanent magnets are wound around the diagonal angle bodies C-D at the other side;

FIG. 12 is a schematic diagram showing the relative relationship between the short-circuit coil and the permanent magnet, wherein the permanent magnets are adjacent and have the same polarity and the same polarity at the opposite positions, the diagonal body coils of the H-shaped iron core body are wound to form the motor coil winding, and the diagonal body coils at the other side are respectively wound to form the short-circuit coil;

FIG. 13 is a schematic cross-sectional view of the permanent magnet of FIG. 12 and the variation of the magnetic field generated inside the H-shaped core;

FIG. 14 is a schematic diagram showing the relative relationship between the permanent magnets and the generator coil winding longitudinally wound around the large slits on the upper and lower sides of the body, wherein the permanent magnets are adjacent and have the same polarity and the same polarity at the opposite positions, the diagonal body coils of the H-shaped iron core body are wound to connect the motor coil winding, the diagonal body coils at the other side are respectively wound to form short-circuit coils, and the generator coil winding and the permanent magnets are longitudinally wound around the large slits;

FIG. 15 is a schematic cross-sectional view of the permanent magnet of FIG. 14 and the variation of the magnetic field generated inside the H-shaped core;

fig. 16 is a schematic diagram of the sensing element and the intelligent controller providing the frequency-based driving signal, which is used to illustrate that the enabling controller receives the position signal of the permanent magnet measured by the sensing element and provides the phase difference relationship of the frequency-based driving signal received by the adjacent coil sets with the ac frequency.

Description of reference numerals:

9-permanent magnet ac servomotor; 8-a disc motor; 10-an outer disc motor; 82(91, 122) -permanent magnet; 12(81, 92) -rotor; 83(93, 132) -coil windings; 13(94) -a stator; 11-a pivot; 131-a core; 121-a tray body; 133-a base; 134-slit; 135(A, B, C, D) -horn; 136-a sensing component; 137-intelligent controller; 138-short circuited coil; 139-generating coil winding

Detailed Description

The foregoing and other technical and other features and advantages of the invention will be apparent from the following detailed description of preferred embodiments, which proceeds with reference to the accompanying drawings; in addition, in the embodiments, the same components will be denoted by the same reference numerals, and the axial direction, the longitudinal direction, is defined along the up-down direction of the drawing, and the lateral direction is defined along the left-right direction of the drawing.

As shown in fig. 3, an outer disc motor 10 having a barrier H-type stator of the present invention has a pivot 11 extending in an axial direction, two disc-type outer rotors 12 arranged in parallel with each other, a set of barrier H-type stators 13; each of the disk outer rotors 12 includes a disk 121 and an even number of permanent magnets 122; the barrier H-type stator 13 includes a plurality of H-shaped cores 131 and a motor coil winding 132 wound around each H-shaped core 131.

In this embodiment, the disc body 121 is a circular disc, and 6 of the permanent magnets 122 are slightly in the shape of a long flat arc; it can be easily understood by those skilled in the art that the permanent magnet 122 herein has a horseshoe shape or a rectangular shape, and the permanent magnet is disposed in the disc 121 in the above manner, which does not hinder the implementation of the present invention.

In the present embodiment, the barrier H-shaped stator 13 includes 9 cylindrical H-shaped cores 131 with equal length, and each H-shaped core 131 has a length of 3.5 cm, where the H-shaped is similar to the english letter H; as shown in fig. 4 and 5, the H-shaped iron core 131 may be a circular or square column, which does not hinder the implementation of the present application.

The H-shaped core 131 is formed of a plurality of oriented silicon steel sheets, and any one of ordinary skill in the art can select the H-shaped core, for example, iron powder die-cast or other conventional magnetic conductors, without any hindrance to the practice of the present invention.

As shown in fig. 3, each of the two disc outer rotors 12 disposed in parallel includes a disc body 121 and an even number of permanent magnets 122, wherein the disc body 121 is vertically fixed to the pivot 11 at its center, the even number of permanent magnets 122 are uniformly arranged in a ring shape with the disc body 121 as the center and are flatly embedded in the disc body 121, each two adjacent permanent magnets 122 on the disc body 121 are disposed with the same magnetic pole, and the permanent magnets 122 in the disc bodies of the two parallel disc outer rotors 12 are disposed with different magnetic poles opposite to each other.

As shown in fig. 3, the H-type stator 13 includes a plurality of H-shaped iron cores 131, wherein the H-shaped iron cores 131 are commonly held by two non-magnetic conductive stator bases 133, and the H-shaped iron cores 131 are respectively centered on the pivot 11 and are arranged in parallel and uniformly between the two non-magnetic conductive stator bases 133 along the axial direction.

As shown in fig. 3, 4 and 5, each H-shaped iron core 131 has large slits 134 on the top and bottom to form four angle bodies 135, wherein the H-shaped iron core 131 is wound in a transverse manner between the large slits 134 to form the motor coil winding 132, and two poles of the four angle bodies 135 are respectively close to the permanent magnets 122 in the two disc-type outer rotors 12, as shown in fig. 6; further, the number of the H-shaped iron cores 131 is one time and less than two times of the number of the permanent magnets 122, or the number of the H-shaped iron cores is less than 0.5 times of the number of the permanent magnets 122, so that no matter the permanent magnets 122 rotate to any position, a part of the permanent magnets 122 can correspond to two adjacent H-shaped iron cores 131, and the two adjacent H-shaped iron cores 131 are respectively close to the N pole and the S pole of the two permanent magnets 122, so as to form two complete magnetic circuits, as shown in fig. 6 and 7.

As shown in fig. 16, the present invention further includes a sensing element 136 and an enable controller 137 connected to the sensing element 136; the sensing element 136 is a hall element, but not limited to this, the sensing element 136 is mainly used to provide a position signal for measuring the position of the permanent magnet 122 of the disc-type outer rotor 12, and output the measured position signal to the enable controller 138, the enable controller 138 can provide an ac frequency-type driving signal to each motor coil winding 132 according to the received position signal from the sensing element 136, and the frequency-type driving signals of each two adjacent motor coil windings 132 respectively have a uniform phase difference, and the sum of the phase differences between all the adjacent motor coil windings 132 of the group of the fence-type H-type stator 13 is a non-zero integer multiple of 360 degrees.

Referring to fig. 6 and 7, fig. 6 is a schematic diagram showing the relative relationship between the motor coil winding and the permanent magnet, wherein the permanent magnets are adjacent and have the same polarity and the opposite positions have different polarities, and the H-shaped core body is located between the upper and lower large slits and is wound transversely. Fig. 7 is a schematic cross-sectional view of the permanent magnet and the change in magnetic field generated inside the H-shaped core of fig. 6.

As shown in the figure, the present invention winds the motor coil winding 132 in a transverse manner between the upper and lower large slits 134 of each H-shaped iron core 131 for receiving an alternating current frequency type driving signal to magnetize the H-shaped iron core 131 to generate a main magnetic field; under the action of the H-shaped core 131, the large slit 134 of the H-shaped core 131 itself is utilized, so that the magnetic pole of the permanent magnet 122 just passes through the end of the H-shaped core 131 corresponding to the angle body 135, and the main magnetic flux of the alternating current frequency type driving signal of the motor coil winding 132 on the body of the H-shaped core 131 is distorted and shifted, and effectively and uniformly concentrated at the two sides and distributed at the magnetic pole tips of the four angle bodies 135, thereby increasing the orthogonal amount of the main magnetic flux of the alternating current frequency type driving signal magnetized H-shaped core 131 and the permanent magnet 122, and maintaining the magnetic flux shift, so as to reduce the starting current and improve the efficiency of the high-speed region. In addition, when the motor is operated at a high speed, the magnetic attraction between the disc permanent magnet 122 and the H-shaped iron core 131 is reduced by a larger orthogonal vector, so as to achieve the effect of reducing the starting current of the motor.

As shown in fig. 7, when the magnetic poles of the permanent magnets 122 of the disk outer rotor 12 axially above the outer disk motor are arranged on the disk 121 in the manner of N-S, S-N, N-S … from left to right and the magnetic poles of the permanent magnets 122 of the disk outer rotor 12 relatively axially below are arranged on the disk 121 in the manner of S-N, N-S, S-N and … from left to right, as shown in fig. 3, if the magnetic poles induced by driving of an H-shaped core 131 are just different from the magnetic poles of the permanent magnets 122 of the disk outer rotor 12 above and close to each other, they form closed magnetic lines of force, and on the other hand, the magnetic poles of the H-shaped core 131 are the same as those of the lower permanent magnets 122, and the H-shaped core 131 pulls the permanent magnets 122 to rotate along the pivot 11 due to the repulsion of the same magnetic poles, that is, the disk outer rotor 12 is driven to rotate by the magnetic fence-type H-shaped stator 13, after the permanent magnet 122 passes through the four corners 135 of the body of the H-shaped iron core 131, the phase of the excited frequency driving signal is gradually changed, and the magnet is pushed again to continue the operation with the opposite magnetism. In the present embodiment, the same pushing or pulling action is generated every 120 degrees on the circumference, so that three times of pushing or pulling force can be generated in each phase of the outer disk motor 10. At the moment shown in fig. 7, the magnetic lines of force of the upper and lower permanent magnets 122 pass through the motor coil 132 and return from the inside of the lower H-shaped iron core 131 and the adjacent H-shaped iron core 131 to form a complete magnetic circuit.

Referring to fig. 8 to 11, in a disc motor with a barrier H-type stator according to the present invention, a barrier H-type stator 13 structure including a plurality of H-type cores 131 is disposed between two disc-type outer rotors 12 disposed in parallel, four horns 135 are formed by large slits 134 of a body of the H-type cores 131, four sets of coils are wound on the four horns 135, two sets of coils among the four sets of coils are selected as short-circuited coils 138, that is, a shielding Coil (shielding Coil) function, and the coils selected for short circuit have a small number of turns and can also be formed using copper rings, so as to be resistive coils with high resistance and low inductance resistance.

Two of the coils are short-circuited coils 138, and the other two coils are connected to form the motor coil winding 132 for receiving an AC frequency-type driving signal to magnetize the H-shaped iron core. Due to the mutual magnetic flux generated in the main magnetic field generated by the two sets of short-circuited coils (motor coil windings 132) by the ac frequency-type driving signal, induced voltages are generated in the two sets of short-circuited coils 138, and a short-circuit current is generated when a short circuit occurs. The short-circuit current is not synchronous with the excitation current generated by the other two groups of un-short-circuited coils (motor coil windings 132) receiving an AC frequency type driving signal. According to lenz's law, the induced potential causes two short-circuit coils 138 to generate induced current to oppose the change in the magnetic flux of the main magnetic flux of the other two short-circuit coils (motor coil windings 132) that magnetize the H-core by receiving an alternating-current frequency-based driving signal, so that the magnetic flux in the short-circuit coils 138 lags behind by 90 degrees with respect to the main magnetic flux of the two short-circuit coils (motor coil windings 132) that magnetize by receiving an alternating-current frequency-based driving signal, and the lagging magnetic flux can change the phase of the main magnetic flux of the two short-circuit coils (motor coil windings 132) that magnetize by receiving an alternating-current frequency-based driving signal, that is, the effect of the magnetic flux of the short-circuit coils 138 and the main magnetic flux of the two short-circuit coils (motor coil windings 132) that magnetize by receiving an alternating-current frequency-based driving signal, so that the main flux direction of the two groups of coils (motor coil windings 132) which are not short-circuited and magnetized by receiving an AC frequency type driving signal can generate distortion.

Therefore, the alternating magnetic field generated by the two short-circuit coils 138 ideally lags behind and phase-shifts 90 degrees with the main magnetic fields generated by the two short-circuit coils (the motor coil windings 132) by the ac frequency driving signal, which will cause the magnetic fields of the two parts of the H-shaped iron core not to be zero at the same time, and the short-circuit current of the short-circuit coil 138 generates a new magnetic field to offset a part of the main magnetic field generated by the original ac frequency driving signal, and causes the main magnetic flux to change slowly, thereby causing the main magnetic field at the tip of the angle magnetic pole of the stator iron core to slightly distort and indirectly cause the phase-shifting phenomenon of the magnetic field.

As shown in fig. 8 and 9, since the short-circuited coil 138 is provided in the H-shaped core, four horns 135 provided at both ends of the stator pole can be formed in the disk motor. When the permanent magnet magnetic circuits are designed differently and the motor needs to turn, the main pole iron core must be turned over to change the position of the copper ring for placing the short circuit, when the permanent magnets 122 are adjacent and have the same polarity and the upper and lower opposite positions have different polarities, the short circuit coil 138 must be arranged on the same side of the H-shaped iron core, and when the short circuit wants to rotate clockwise, as shown in FIG. 8, the A, C copper ring can be short-circuited, and the B, D copper ring is open-circuited; when the rotation is attempted in the counterclockwise direction, as shown in FIG. 9, A, C copper ring is opened and B, D copper ring is short-circuited.

As shown in fig. 10 and 11, when the permanent magnets 122 are adjacent to each other and have the same polarity, and the relative positions of the upper and lower parts are the same, the short-circuit coil 138 needs to be disposed on the diagonal side of the H-shaped iron core, when the motor is rotating, the main pole iron core needs to be turned over to change the position of the copper ring for short-circuit placement, and when the motor is rotating clockwise, as shown in fig. 10, the A, B copper ring can be short-circuited, and the C, D copper ring can be open-circuited; when the rotation is attempted in the counterclockwise direction, as shown in fig. 11, A, B copper ring is opened and C, D copper ring is short-circuited.

As can be seen from the above, in the starting process of the disc outer rotor 12 of the disc motor 10, the resultant magnetic fluxes flowing through the air gaps between the stator 13 and the disc outer rotor 12 are located at both sides of the skew magnetic flux or the magnetic pole, so that the orthogonal vector can be effectively generated in a centralized manner, and the excitation magnetic fluxes are distributed at the tips of the magnetic poles of the four angle bodies 135 in a centralized manner, so as to keep the magnetic fluxes offset, thereby achieving the purposes of reducing the starting current, improving the cogging torque of the disc motor, improving the efficiency of the disc motor at high speed, and greatly improving the performance-to-price ratio (the performance-to-price ratio is performance/price, and.

Referring to fig. 12 and 13, fig. 12 is a schematic diagram showing the relative relationship between the short-circuited coil and the permanent magnet formed by winding the coils of the horns at the opposite corners of one side of the H-shaped core body to form the motor coil winding and the coils of the horns at the opposite corners of the other side of the H-shaped core body to form the short-circuited coil. Fig. 13 is a schematic sectional view of the permanent magnet and the change of the magnetic field generated inside the H-shaped core.

As shown in the figure, two coils of the two opposite angles 135 of each H-shaped iron core 131 are wound into a motor coil 132, and the coils on the two opposite angles 135 are wound into short-circuit coils 138, respectively, in this embodiment, two groups of coils of the H-shaped iron core 131 opposite angles are connected into a motor coil winding 132 for receiving an ac frequency-type driving signal (not shown) to magnetize the H-shaped iron core 131. Since the short-circuit current of the short-circuit coil 138 generates a new magnetic field and cancels a portion of the main magnetic field generated by the original ac frequency-type driving signal, and the main magnetic flux changes slowly, so that the tip portion of the magnetic pole of the horn 135 of the H-shaped iron core 131 slightly distorts and deforms, and indirectly causes a phase shift phenomenon of the magnetic field, as shown in fig. 13, the magnetic poles of the permanent magnets 122 of the axially upper disc-type outer rotor 12 are arranged on the disc body 121 from left to right in an N-S, S-N, N-S … manner, and the magnetic poles of the permanent magnets 122 of the axially lower disc-type outer rotor 12 are arranged on the disc body 121 from left to right in an N-S, S-N, N-S … manner, as shown in fig. 3, at this time, if a magnetic pole induced by driving of the H-type iron core 131 is exactly different from the magnetic pole of the permanent magnets 122 of the upper disc-type outer rotor 12 that are close, on the other hand, the magnetic poles of the magnetic field lines are opposite to the magnetic poles of the permanent magnets 122 of the lower disc-type outer rotor 12, and the magnetic poles of the magnetic field lines attract and repel each other, so that the H-shaped iron core 131 pulls the permanent magnets 122 to rotate along the pivot 11, that is, the disc-type outer rotor 12 is magnetically driven to rotate by the fence-type H-shaped stator 13, in this embodiment, the same pushing or pulling action is generated every 120 degrees on the circumference, so that the outer disc-type motor 10 can generate three times of pushing force or pulling force per phase. As shown in fig. 13, at the moment of the upper and lower permanent magnets 122, the magnetic lines of force travel through the motor coil winding 132 and return from the inner cross bar below the body of the H-shaped iron core 131 and the adjacent body of the H-shaped iron core 131 to form a complete magnetic circuit.

Since the number (9 pieces) of the H-shaped iron cores 131 in this embodiment is 1.5 times of the number (6) of the permanent magnets, no matter the disc-type outer rotor 14 rotates to any position, some of the permanent magnets 122 exactly correspond to two adjacent H-shaped iron cores 131, and the two adjacent H-shaped iron cores 131 are respectively close to the N pole and the S pole thereof, so that the two corresponding permanent magnets 122 of the upper and lower disc-type outer rotors 12 can respectively pass through the H-shaped iron cores 131 by the internal cross bar of one of the H-shaped iron cores 131 and return to the other pole of the permanent magnets 122 to form upper and lower complete magnetic circuits.

In addition, the inner cross bar of each H-shaped iron core 131 makes the magnetic lines of force of the permanent magnet 122 pass through the H-shaped iron core 131 densely, so the magnetic resistance is greatly reduced. Of course, those skilled in the art will understand that, in order to form the corresponding magnetic circuit, the number of the H-shaped iron cores 131 is a positive integer which is radially symmetrical with respect to the pivot 11, and the number of the H-shaped iron cores is more than one time and less than two times the number of the permanent magnets 122, or the number of the H-shaped iron cores is less than 0.5 times the number of the permanent magnets.

Referring to fig. 14 and 15, fig. 14 is a schematic diagram showing the relative relationship between the permanent magnets and the coils of the power generation coil longitudinally wound around the large slits on the body, wherein the magnets of the H-shaped core body are adjacent to each other and have the same polarity, and the coils of the H-shaped core body are wound diagonally to form the coils of the motor coil, and the coils of the H-shaped core body are wound diagonally to form the short-circuit coils. Fig. 15 is a schematic sectional view showing the change in the magnetic field generated inside the permanent magnet and the H-shaped core.

As shown in the figure, each of the large slits 134 of the H-shaped iron core 131 has a generator coil winding 139 wound around it to receive the alternating mutual inductance flux generated by the motor coil winding 132 and magnetizing the H-shaped iron core 131; when the motor is running, the power generation coil winding 139 arranged in the upper and lower large slits 134 of the body of the H-shaped iron core 131 cuts magnetic lines of force during the movement due to the rotation of the barrier type H-shaped stator 13, recovers part of kinetic energy and converts the kinetic energy into electric energy.

According to lenz's law, the induced potential causes the generation coil winding 139 to generate an induced current or a load current to oppose the magnetic flux change of the main magnetic flux of the H-shaped core 131 magnetized by the frequency-based driving signal of the motor coil winding 132, so that the magnetic flux in the generation coil winding 132 lags behind the main magnetic flux of the motor coil winding 132 magnetized by receiving an alternating current frequency-based driving signal by 90 degrees, and the generation coil winding 139 and the motor coil winding 132 are 90 degrees different from each other. Therefore, the motor magnetic flux and the generator magnetic flux can be designed to be in the same phase, a complete magnetic line of force path of the permanent magnet is provided, the magnetic resistance is greatly reduced, the rotation movement of the permanent magnet can periodically weaken the hysteresis phenomenon of the iron core in the process of being excited by an alternating current signal, and the heat generation and energy loss caused by the hysteresis phenomenon are reduced, so that the motor disclosed by the invention has low heat generation and high energy conversion efficiency in the operation process, and the aim of the invention exceeding the prior art is fulfilled.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention made by those skilled in the art without departing from the spirit of the present invention should fall within the scope covered by the present patent.

Claims

1. A disc motor with a barrier H-type stator comprising at least:

an axially extending pivot shaft;

two disc type outer rotors which are arranged in parallel, wherein each disc type outer rotor comprises a disc body and an even number of permanent magnets, the disc bodies are respectively and fixedly arranged on the pivot shaft vertically by the centers of the disc bodies, the even number of permanent magnets are arranged on the disc bodies, and are arranged on the disc bodies in a ring shape by taking the disc bodies as the centers, wherein every two adjacent permanent magnets on each disc body are arranged by the same magnetic pole, and the permanent magnets in the disc bodies of the two disc type outer rotors are arranged oppositely by different magnetic poles;

a group of fence type H-shaped stators, including multiple H-shaped iron cores, each H-shaped iron core body has big slits up and down, making the body form four angle bodies up and down, wherein the H-shaped iron core body is located between the big slits up and down and winding the motor coil winding in a transverse mode, and multiple H-shaped iron cores use the above-mentioned pivot as the centre of a circle respectively, and arrange in parallel each other along the axial direction, the two poles of the above-mentioned four angle bodies of each H-shaped iron core are close to the permanent magnets in the above-mentioned two disk type outer rotors respectively, and the number of the above-mentioned H-shaped iron cores is more than one times and less than two times of the number of the above-mentioned permanent magnets, or the number of the H-shaped iron cores is less than 0.5;

2. A disc motor with a barrier H-type stator comprising at least:

an axially extending pivot shaft;

a group of fence type H-shaped stators, including multiple H-shaped iron cores, each H-shaped iron core body has big slits up and down, making the body form four angle bodies up and down, winding coils on the four angle bodies, wherein the coils on the two angle bodies on one side are wound in transverse mode to connect into motor coil winding, the coils on the two angle bodies on the other side are wound into short circuit coils, multiple H-shaped iron cores take the pivot as circle center, and are arranged parallel to each other along axial direction, the two poles of the four angle bodies of each H-shaped iron core are respectively close to the permanent magnets in the two disc type outer rotors, the number of the H-shaped iron cores is one time and less than two times of the number of the permanent magnets, or the number of the H-shaped iron cores is less than 0.5 times of the number of the permanent magnets;

3. A disc motor with a barrier H-type stator comprising at least:

an axially extending pivot shaft;

two disc type outer rotors which are arranged in parallel, wherein each disc type outer rotor comprises a disc body and an even number of permanent magnets, the disc bodies are respectively and fixedly arranged on the pivot shaft vertically by the centers of the disc bodies, the even number of permanent magnets are arranged on the disc bodies and are arranged on the disc bodies in a ring shape by taking the disc bodies as the centers, each two adjacent permanent magnets on each disc body are arranged by the same magnetic pole, and the permanent magnets in the disc bodies of the two disc type outer rotors are arranged oppositely by the same magnetic pole;

a group of fence type H-shaped stators, including several H-shaped iron cores, each H-shaped iron core body has big slits up and down, making the body form four angle bodies, winding coils on the four angle bodies, wherein, the coils on two angle bodies at one side are wound in transverse mode to form motor coil windings, the coils on two angle bodies at the other side are wound into short circuit coils, several H-shaped iron cores take the pivot as the centre of circle, and are arranged in parallel and uniformly along the axial direction, the two poles of the four angle bodies of each H-shaped iron core are connected to the permanent magnets in the two disc type outer rotors, the number of H-shaped iron cores is more than one time and less than two times of the number of permanent magnets, or the number of H-shaped iron cores is less than 0.5 times of the number of permanent magnets;

4. The disc motor with the H-type stator of any one of claims 1 to 3, wherein each H-type core is formed by stacking a plurality of oriented silicon steel sheets into a circular or square column shape. Also included is a motor housing connected to the barrier stator.

5. The disc motor with the barrier H-stator as claimed in any one of claims 1 to 3, wherein the barrier H-stator further comprises two non-magnetic stator bases holding the H-core.

6. The disc motor with the fence type H-stator as claimed in any one of claims 1 to 3, wherein the shortest distance between the top of the four horns of the H-shaped iron core and the closely corresponding permanent magnets is smaller than the thickness of the disc.

7. A disc motor/generator with a barrier H-type stator comprising at least:

an axially extending pivot shaft;

a group of fence type H-shaped stator comprises a plurality of H-shaped iron cores, wherein each H-shaped iron core body is provided with large slits at the upper and lower parts, so that the body forms four angle bodies, coils are respectively wound on the four angle bodies, wherein the coils on the two diagonal corner bodies on one side are wound in a transverse mode to form a motor coil winding, the coils on the two diagonal corner bodies on the other side are respectively wound into short-circuit coils, the power generation coil winding is longitudinally wound at the upper and lower large slits of the H-shaped iron core body, and a plurality of H-shaped iron cores take the pivot as the circle center respectively, the two poles of the four angle bodies of each H-shaped iron core are respectively close to and correspond to the permanent magnets in the two disc type outer rotors, and the number of the H-shaped iron cores is one time and less than two times larger than that of the permanent magnets, or the number of the H-shaped iron cores is less than 0.5 time of that of the permanent magnets;

an enabling controller, for providing an alternating current frequency type driving signal to the motor coil winding according to the received position signal, and making the frequency type driving signals of every two adjacent motor coil windings have a uniform phase difference, and the sum of the phase differences between all adjacent motor coil windings of the group of the fence type stators is a non-zero integral multiple of 360 degrees; and

8. The disc motor/generator with a barrier type H-shaped stator as claimed in claim 7, wherein each H-shaped iron core is formed by stacking a plurality of oriented silicon steel sheets into a cylindrical shape. Also included is a motor housing connected to the barrier stator.

9. The disc motor/generator with a barrier H-stator as in claim 7, wherein the barrier H-stator further comprises two non-magnetic conducting stator bases holding the H-core.

10. The disc motor/generator with the barrier H-stator as claimed in claim 7, wherein the shortest distance between the top of the four horns of the H-core and the adjacent corresponding permanent magnets is smaller than the thickness of the disc.