CN206226246U - Motor - Google Patents

Abstract

The utility model discloses a kind of motor, including：External stator, the external stator includes at least one external stator piecemeal, and the quantity of the external stator piecemeal is less than the quantity of the external stator piecemeal needed for connecting into closed-loop shaped along the circumference of the motor；Inner stator, the inner stator the motor radially positioned at the inner side of the external stator and with the external stator interval setting, the inner stator includes at least one default piecemeal, and the quantity of the default sub-piecemeal is identical with the quantity of the external stator piecemeal；Rotatable rotor, the rotor is the closed-loop shaped of the circumferentially extending along the motor, and the rotor is in the motor radially positioned at the inner side of the external stator and the outside of the inner stator.According to motor of the present utility model, the electric efficiency under low speed high torque drives occasion is improve, can be applied to the occasions such as household electrical appliance, electric automobile, wind-power electricity generation, the simple structure of the motor, system effectiveness are high, cost-effective, have a wide range of application.

Description

Motor

Technical field

The utility model is related to technical field of motors, more particularly, to a kind of motor.

Background technology

At present, direct driving technologies have more and more been applied in industry and life.Due to eliminating transmission device, The system effectiveness of direct driving technologies is effectively improved, and in correlation technique, direct driving technologies are mainly used in low speed The occasion of big torque, in order to improve the electric efficiency under low speed high torque drives occasion as far as possible, motor needs as far as possible Increase external diameter or axial length, the volume of stator is significantly increased, and the cost of stationary part accordingly increases.

Utility model content

The utility model is intended at least solve to a certain extent one of technical problem in correlation technique.

Therefore, the utility model proposes a kind of motor, the simple structure of the motor, system effectiveness are high, cost-effective, application Scope is wide.

According to motor of the present utility model, including：External stator, the external stator includes at least one external stator piecemeal, institute The quantity for stating external stator piecemeal is less than the quantity of the external stator piecemeal needed for connecting into closed-loop shaped along the circumference of the motor；It is default Son, the inner stator the motor radially positioned at the external stator inner side and with the external stator interval setting, institute Stating inner stator includes at least one default piecemeal, and the quantity of the default sub-piecemeal is identical with the quantity of the external stator piecemeal； Rotatable rotor, the rotor is the closed-loop shaped of the circumferentially extending along the motor, radial direction of the rotor in the motor The outside of the upper inner side and the inner stator for being located at the external stator.

According to motor of the present utility model, default sub-piecemeal and external stator are respectively provided with by the inner side and outer side of rotor Piecemeal, and make the quantity of external stator piecemeal and default sub-piecemeal equal, so on the basis of rotor diameter change, the body of stator Product will not occur significant change, save the cost of stationary part, while improve the motor under low speed high torque drives occasion Efficiency；And do not changing the radial dimension of rotor, and the package size of motor can be reduced, make the structure of motor compacter, fit In applying in occasions such as household electrical appliance, electric automobile, wind-power electricity generations.The simple structure of the motor, high working efficiency, cost compared with It is low, have a wide range of application.

In addition, according to motor of the present utility model, can also have following additional technical characteristic：

According to one embodiment of the present utility model, the external stator piecemeal is multiple and along the circumferential uniform of the motor Arrangement, the default sub-piecemeal is circumferential uniform arrangement multiple and along the motor.

According to one embodiment of the present utility model, the external stator piecemeal and the default sub-piecemeal are along the motor It is circumferential to be oppositely disposed one by one.

According to one embodiment of the present utility model, the rotor includes：Multiple conducting magnet cores and multiple non-magnetic intervals Block, multiple conducting magnet cores and multiple non-magnetic spacer blocks are alternately arranged along the circumference of the motor.

According to one embodiment of the present utility model, the external stator piecemeal includes：External stator conducting magnet core and stator around Group, the stator winding is wound on the external stator conducting magnet core.

According to one embodiment of the present utility model, the default sub-piecemeal includes：Inner stator conducting magnet core and permanent magnet, The permanent magnet is located on the inner stator conducting magnet core.

The number of pole-pairs in the magnetic field produced according to one embodiment of the present utility model, each described external stator piecemeal is ps, The quantity of the permanent magnet of the inner stator is npm0 and the number of pole-pairs in the magnetic field of each default sub-piecemeal generation is pf= Npm0/2, the quantity of the conducting magnet core of the rotor is pr and satisfaction：Pr=n0 | ps ± pf |, wherein, n0 is along the motor The quantity of the external stator piecemeal needed for circumferentially connecting into closed-loop shaped.

According to one embodiment of the present utility model, the default sub-piecemeal includes：Inner stator conducting magnet core and stator around Group, the stator winding is wound on the inner stator conducting magnet core.

According to one embodiment of the present utility model, the external stator piecemeal includes：External stator conducting magnet core and permanent magnet, The permanent magnet is located on the external stator conducting magnet core.

The number of pole-pairs in the magnetic field produced according to one embodiment of the present utility model, each described default sub-piecemeal is ps, The quantity of the permanent magnet of the external stator is npm0 and the number of pole-pairs in the magnetic field of each external stator piecemeal generation is pf= Npm0/2, the quantity of the conducting magnet core of the rotor is pr and satisfaction：Pr=n0 | ps ± pf |, wherein, n0 is along the motor The quantity of the default sub-piecemeal needed for circumferentially connecting into closed-loop shaped.

According to one embodiment of the present utility model, the motor also includes：Stator fixed plate and rotor fixed plate, it is described Inner stator conducting magnet core is radially led the motor positioned at the inner side of the external stator conducting magnet core and with the external stator Magnetic core interval setting, the rotor fixed plate and the stator fixed plate along the axially spaced arrangement of the motor and with institute State output shaft to be connected, the rotor is located in the rotor fixed plate.

According to one embodiment of the present utility model, each described external stator piecemeal has multiple stator tooths and is located at respectively Multiple teeth groove between adjacent stators tooth, the quantity of the stator tooth of each external stator piecemeal is Ns0, each described external stator The slot-pitch angle of the adjacent sheaves of piecemeal is α 0 and meets：α 0=2 π/Ns0/n0, wherein, n0 is to be connected into along the circumference of the motor The quantity of the external stator piecemeal needed for closed-loop shaped.

According to one embodiment of the present utility model, the central axis of the external stator, the central axis of the inner stator With the central axes of the rotor.

Additional aspect of the present utility model and advantage will be set forth in part in the description, partly by from following description In become obvious, or by it is of the present utility model practice recognize.

Brief description of the drawings

Fig. 1 is the longitudinal sectional view of the motor according to the utility model embodiment；

Fig. 2 is the sectional view of the motor according to the utility model embodiment；

Fig. 3 is the longitudinal sectional view of the motor according to the utility model another embodiment；

Fig. 4 is the sectional view of the motor according to the utility model another embodiment；

Fig. 5 is the enlarged drawing in D portions in Fig. 4.

Reference：

100：Motor；

10：External stator；10a：Stator tooth；10b：Teeth groove；

11：External stator conducting magnet core；12：Stator winding；13：Permanent magnet；

20：Inner stator；

21：Inner stator conducting magnet core；22：Permanent magnet；23：Stator winding；

30：Rotor；

31：Conducting magnet core；32：Non-magnetic interval is fast；

40：Output shaft；

50：Bearing；

60：Stator fixed plate；

70：Rotor fixed plate.

Specific embodiment

Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings.Below by The embodiment being described with reference to the drawings is exemplary, it is intended to for explaining the utility model, and it is not intended that new to this practicality The limitation of type.

1 to Fig. 5 specifically describes the motor 100 according to the utility model embodiment below in conjunction with the accompanying drawings.

Motor 100 according to the utility model embodiment includes：External stator 10, inner stator 20, the and of rotatable rotor 30 Output shaft 40.

Specifically, external stator 10 includes at least one external stator piecemeal, and the quantity of external stator piecemeal is less than along motor 100 Circumference connect into closed-loop shaped needed for external stator piecemeal quantity, inner stator 20 motor 100 radially be located at external stator 10 inner side and with the interval setting of external stator 10, inner stator 20 include at least one default piecemeal, the quantity of default sub-piecemeal with The quantity of external stator piecemeal is identical and external stator piecemeal and default sub-piecemeal are oppositely disposed one by one along the circumference of motor 100, turns Son 30 is the closed-loop shaped of circumferentially extending along motor 100, rotor 30 motor 100 radially positioned at the inner side of external stator 10 with And the outside of inner stator 20, output shaft 40 is connected with rotor 30.

In other words, the motor 100 is mainly made up of external stator 10, inner stator 20, rotatable rotor 30 and output shaft 40, Wherein, external stator 10 is made up of at least one external stator piecemeal, and default sub-piecemeal is made up of at least one default sub-piecemeal, outer fixed Sub-piecemeal is identical with the quantity of default sub-piecemeal, is respectively smaller than along the circumferential block count for being connected as closed ring needs of motor 100 Amount, external stator piecemeal and inner stator 20 are set along circumferential one-to-one corresponding of motor 100, in motor 100 in the radial direction, outward Stator 10 is spaced apart with inner stator 20 and a certain distance, and external stator 10 is separated between setting, i.e. external stator 10 and inner stator 20 Positioned at the outside of inner stator 20.

Additionally, rotor 30 is formed as the closed ring along the circumference of motor 100, in the external stator in the radial direction of motor 100 Rotor 30 is provided with interval between 10 and inner stator 20, i.e., is located in external stator 10 in the radial direction upper rotor part 30 of motor 100 Side and the outside of inner stator 20, rotor 30 are connected with output shaft 40, and rotor 30 is rotated and drives output shaft 40 also to rotate, and is entered And do work to external world.

Thus, the motor 100 according to the utility model embodiment, by the inner side and outer side of rotor 30 is respectively provided with Stator piecemeal and external stator piecemeal, and make that external stator piecemeal is corresponding with the position of default sub-piecemeal and quantity is equal, so turning On the basis of sub 30 external diameters change, the volume of stator will not occur significant change, save the cost of stationary part, while improving Low speed high torque drives motor 100 efficiency under occasion；And do not changing the radial dimension of rotor 30, motor can be reduced 100 package size, makes the structure of motor 100 compacter, is suitable for application in household electrical appliance, electric automobile, wind-power electricity generation etc. Occasion.The simple structure of the motor 100, high working efficiency, cost are relatively low, have a wide range of application.

In some specific embodiments of the present utility model, external stator piecemeal and default sub-piecemeal include one respectively.

Specifically, as shown in Figures 3 to 5, the external stator 10 of motor 100 includes an external stator piecemeal, accordingly, interior Stator 20 also includes a default sub-piecemeal, and external stator piecemeal is corresponding with the position of default sub-piecemeal, i.e. external stator 10 and interior Stator 20 forms be located at the outside of rotor 30 and the segmental arc of inner side respectively, on the basis of ensureing to produce high torque (HT), is conducive to Reduce the volume of motor 100, can both reduce the cost of motor 100, the lightweight of motor 100 can be realized again.

In other specific embodiment modes of the present utility model, external stator piecemeal is multiple and along the week of motor 100 To uniform arrangement, default sub-piecemeal is circumferential uniform arrangement multiple and along motor 100.

That is, external stator 10 includes the external stator piecemeal of multiple evenly spaced arrangements of circumference along motor 100, Inner stator 20 includes the default sub-piecemeal of multiple evenly spaced arrangements of circumference along motor 100, and multiple external stator piecemeals The position of position and multiple default sub-piecemeals correspond, each external stator piecemeal is with corresponding default sub-piecemeal in motor 100 radially interval setting, and external stator piecemeal is located at the outside of inner stator 20, so rotor 30 can be set into fixed outside Between son 10 and inner stator 20, so that ensure that external stator 10 and inner stator 20 can produce uniform magnetic field, so as to improve motor 100 performance, and then improve the quality of motor 100.

It is understood that the quantity of external stator piecemeal and default sub-piecemeal can flexibly set according to actual conditions, example Such as, three external stator piecemeals and three default sub-piecemeals can be such as set；Or the quantity of external stator piecemeal and default sub-piecemeal Include five etc. respectively.

Wherein, rotor 30 includes：Multiple conducting magnet cores 31 and multiple non-magnetic spacer blocks 32, multiple conducting magnet cores 31 and many Individual non-magnetic spacer block 32 is alternately arranged along the circumference of motor 100.

In other words, rotor 30 is mainly made up of multiple conducting magnet cores 31 and multiple non-magnetic spacer blocks 32, multiple magnetic conductions Iron core 31 and multiple non-magnetic spacer blocks 32 alternate arrangement to constitute closed ring respectively in the circumference of motor 100, that is, exist The adjacent both sides of each conducting magnet core 31 are respectively arranged with a non-magnetic spacer block 32, between the non-magnetic spacer block 32 of each two A conducting magnet core 31 is provided with, can so carry out choosing the external diameter of rotor 30 according to the big freedom in minor affairs of load, the volume of stator is not Significant change can occur, influence will not be produced on the consumption of stator.

Motor 100 radially, the closed ring rotor that is formed of multiple conducting magnet cores 31 and multiple non-magnetic spacer blocks 32 30 be located between external stator 10 and inner stator 20, i.e., motor 100 radially, rotor 30 be located at inner stator 20 outside, it is outer fixed The inner side of son 10, and rotor 30 has certain gap with external stator 10 and inner stator 20 respectively, when rotor 30 is rotated, external stator 10 and inner stator 20 will not produce stuck phenomenon to rotor 30, it is ensured that the normal work of motor 100.

In some specific embodiments of the present utility model, external stator piecemeal includes：External stator conducting magnet core 11 and fixed Sub- winding 12, stator winding 12 is wound on external stator conducting magnet core 11.

That is, external stator piecemeal is mainly made up of external stator conducting magnet core 11 and stator winding 12, external stator magnetic conduction Iron core 11 can be processed by high permeability material high, the winding of stator winding 12 on external stator conducting magnet core 11, such as Fig. 2 institutes Show, by the winding of stator winding 12 at A, B and C tri- of external stator conducting magnet core 11, stator winding 12 forms three-phase windings, when logical When entering three-phase current, the corresponding stator winding 12 of each external stator piecemeal will produce magnetic field.

Wherein, each external stator piecemeal has multiple stator tooth 10a and the multiple being located at respectively between adjacent stators tooth 10a The quantity of teeth groove 10b, the stator tooth 10a of each external stator piecemeal is Ns0, the groove of the adjacent sheaves 10b of each external stator piecemeal Elongation is α 0 and meets：α 0=2 π/Ns0/n0, wherein, external stators of the n0 for needed for connecting into closed-loop shaped along the circumference of motor 100 The quantity of piecemeal.

As shown in figure 1, being disposed with multiple stator tooth 10a on each external stator piecemeal, multiple stator tooth 10a limit many Individual teeth groove 10b, stator tooth 10a are arranged alternately with teeth groove 10b, and the number of the stator tooth 10a of each external stator piecemeal is represented with Ns0 Amount, the slot-pitch angle of the adjacent sheaves 10b of each external stator piecemeal is represented with α 0, then Ns0 and α 0 meets α 0=2 π/Ns0/n0, n0 tables Show the quantity of the external stator piecemeal needed for connecting into closed-loop shaped along the circumference of motor 100, the i.e. adjacent teeth of each external stator piecemeal The slot-pitch angle of groove 10b is equal to n0 times of 360 ° and the business that the quantity of the stator tooth 10a of each external stator piecemeal is Ns0.

Additionally, default sub-piecemeal includes：Inner stator conducting magnet core 21 and permanent magnet 22, permanent magnet 22 are located at inner stator magnetic conduction On iron core 21.As shown in Fig. 2 inner stator 20 is mainly made up of inner stator conducting magnet core 21 and permanent magnet 22, inner stator magnetic conduction iron Core 21 can equally be processed by high permeability material, and permanent magnet 22 is arranged on inner stator conducting magnet core 21, in motor 100 In circumference, permanent magnet 22 be evenly spaced apart to be arranged on inner stator conducting magnet core 21, permanent magnet 22 by the way of parallel magnetization, That is the mode that the permanent magnet 22 of identical polar is relative is uniformly arranged on inner stator conducting magnet core 21, can produce it is equivalent forever Magnetic magnetic field.

Preferably, the number of pole-pairs in the magnetic field that each external stator piecemeal is produced is ps, the quantity of the permanent magnet 22 of inner stator 20 For the number of pole-pairs of npm0 and the magnetic field of each default sub-piecemeal generation is pf=npm0/2, the quantity of the conducting magnet core 31 of rotor 30 It is pr and satisfaction：Pr=n0 | ps ± pf |, wherein, external stator piecemeals of the n0 for needed for connecting into closed-loop shaped along the circumference of motor 100 Quantity.

For example, when the driving current that the correspondence number of phases is passed through to stator winding 12（As threephase stator winding is passed through three-phase current） When, it is the magnetic field of ps that the stator winding 12 of each external stator piecemeal produces number of pole-pairs, and accordingly, the permanent magnet 22 of inner stator 20 is counted It is npm0 to measure, and the number of pole-pairs of the equivalent permanent magnetic field that the permanent magnet 22 of each default sub-piecemeal is produced is pf=npm0/2, i.e., each The magnetic field number of pole-pairs that the permanent magnet 22 of default sub-piecemeal is produced is the half of the number of 20 permanent magnet of inner stator 22.

Additionally, rotor 30 has pr conducting magnet core 31, and the quantity pr of conducting magnet core 31 should meet pr=n0 | ps ± pf |, i.e., the quantity of conducting magnet core 31 of rotor 30 is equal to the external stator piecemeal needed for connecting into closed-loop shaped along the circumference of motor 100 Quantity and each external stator 10 produce magnetic field number of pole-pairs and each inner stator 20 produce magnetic field number of pole-pairs and or differ from it is exhausted To the product being worth, also it is said to as the quantity of conducting magnet core 31 of, rotor 30 is that each external stator 10 produces magnetic field number of pole-pairs and every Individual inner stator 20 produce magnetic field number of pole-pairs and or n0 times of absolute value of difference（N0 is to connect into close along the circumference of motor 100 The quantity of the external stator piecemeal needed for annular）, such as quantity of the conducting magnet core 31 of rotor 30 is pr=30, meets formula pr=n0 | ps ±pf|。

It should be noted that the motor 100 in above-described embodiment mainly includes three-decker, i.e. external stator 10, rotor 30 With inner stator 20, wherein external stator 10 is stator winding including external stator conducting magnet core 11 and stator winding 12, i.e. external stator 10 Excitation side, inner stator 20 includes that inner stator conducting magnet core 21 and permanent magnet 22, i.e. inner stator 20 are stator permanent magnet excitation side, stator Winding excitation side and stator permanent magnet excitation side can be arranged in the outermost of the radial direction of motor 100 as the part of stator Layer and innermost layer, it is also possible to which opposed, i.e. stator winding excitation side are arranged in the innermost layer of the most radial direction of motor 100, and stator is forever Magnetism excitation side is arranged in the outermost layer of the radial direction of motor 100, and rotor 30 is located at stator winding excitation side and stator permanent magnet excitation side It is middle.

In other specific embodiments of the present utility model, default sub-piecemeal includes：The He of inner stator conducting magnet core 21 Stator winding 23, stator winding 23 is wound on inner stator conducting magnet core 21, and external stator piecemeal includes：External stator conducting magnet core 11 With permanent magnet 13, permanent magnet 13 is located on external stator conducting magnet core 11.

In other words, by by the position opposed of the external stator 10 of above-described embodiment and inner stator 20, that is to say, that External stator 10 in Fig. 1 is arranged as the inner stator 20 in Fig. 3, and the inner stator 20 in Fig. 1 is arranged as the external stator in Fig. 3, and Fig. 3 is extremely External stator in Fig. 5 is stator permanent magnet excitation side, and inner stator 20 is stator winding excitation side.

Further, the number of pole-pairs in the magnetic field that each default sub-piecemeal is produced is ps, the quantity of the permanent magnet 13 of external stator For the number of pole-pairs of npm0 and the magnetic field of each external stator piecemeal generation is pf=npm0/2, the quantity of the conducting magnet core 31 of rotor 30 It is pr and satisfaction：Pr=n0 | ps ± pf |, wherein, default sub-piecemeals of the n0 for needed for connecting into closed-loop shaped along the circumference of motor 100 Quantity.

It is understood that by inner stator and external stator after opposed, the stator winding of each default sub-piecemeal The 23 magnetic field numbers of pole-pairs for producing are expressed as ps, and the quantity of permanent magnet 13 of the installation on external stator 10 is npm0, each external stator point It is the half of the number of permanent magnet 13 of placement on external stator 10, the magnetic conduction of rotor 30 that permanent magnet 13 produces the number of pole-pairs in magnetic field on block The quantity of iron core 31 be the magnetic field number of pole-pairs that produces of each default sub-piecemeal with each external stator piecemeal produce magnetic field number of pole-pairs and/or Poor n0 times, wherein, the quantity of default sub-piecemeals of the n0 for needed for connecting into closed-loop shaped along the circumference of motor 100.

Additionally, motor 100 also includes：Stator fixed plate 60 and rotor fixed plate 70, inner stator conducting magnet core 21 is in motor 100 radially positioned at external stator conducting magnet core 11 inner side and with the interval setting of external stator conducting magnet core 11, rotor fixed plate 70 are connected with stator fixed plate 60 along the axially spaced arrangement of motor 100 and with output shaft 40, and rotor 30 is located at rotor and fixes On plate 70.

Specifically, as shown in figures 1 and 3, motor 100 also includes stator fixed plate 60 and rotor fixed plate 70, in motor 100 radially, is provided with external stator conducting magnet core 11, rotor 30 and inner stator conducting magnet core 21 from outside to inside successively, i.e., outer Stator conducting magnet core 11 is located at outermost layer, and inner stator conducting magnet core 21 is located at innermost layer, external stator conducting magnet core 11 and inner stator Certain interval is spaced between conducting magnet core 21, and the interval is provided with rotor 30.

External stator conducting magnet core 11 and inner stator conducting magnet core 21 are respectively placed in stator fixed plate 60, are fixed in stator Output shaft 40 and bearing 50 are connected with the bottom centre of plate 60, rotor fixed plate 70 is solid with stator in the axial direction of output shaft 40 The arranged for interval of fixed board 60, rotor fixed plate 70 be located at stator fixed plate 60 top, rotor fixed plate 70 respectively with output shaft 40 It is connected with rotor 30, rotor 30 can drive output shaft 40 to rotate by rotor fixed plate 70, output shaft 40 passes through bearing 50 The independence rotated with the holding of stator fixed plate 60, additionally, stator fixed plate 60 plays a part of to carry upper part.

Preferably, the central axes of the central axis of external stator 10, the central axis of inner stator 20 and rotor 30.

As shown in Fig. 2 the circumferential uniform intervals of multiple external stator piecemeals and multiple default sub-piecemeals respectively along motor 100 Arrangement, rotor 30 in closing annular, the annular being made up of external stator 10, what the closed ring and inner stator 20 of rotor 30 were constituted The center of circle of three annulars of annular overlaps（That is the position of output shaft 40 in Fig. 2）, i.e. the central axis of external stator 10, inner stator 20 The central axis of central axis and rotor 30 be same central axis.

The motor 100 according to the utility model embodiment is described in detail with reference to specific embodiment.

As shown in Figures 1 to 5, the motor 100 according to the utility model embodiment includes：External stator 10, inner stator 20, can The rotor 30 of rotation, output shaft 40, bearing 50, stator fixed plate 60 and rotor fixed plate 70.

Specifically, external stator 10 is made up of multiple stator piecemeals（It is 3 piecemeal external stators of external stator 10 point shown in Fig. 2 Block）, inner stator 20 is made up of multiple stator piecemeals（It is 3 default sub-piecemeals of piecemeal of inner stator 20 shown in Fig. 2）, 3 fixed outward Sub 10 piecemeal external stator piecemeals and 3 default sub-piecemeals of the piecemeal of inner stator 20 are arranged respectively along the circumferential uniform intervals of motor 100 Cloth, in motor 100 radially, the piecemeal external stator piecemeal of external stator 10 and the default sub-piecemeal interval setting of the piecemeal of inner stator 20, And position corresponds, the piecemeal external stator piecemeal of external stator 10 is located at the outside of the default sub-piecemeal of piecemeal of inner stator 20, rotor 30 are arranged on external stator 10 by between inner stator 20, forming the annular of closing, in motor 100 radially, from outside to inside successively It is external stator 10, rotor 30 and inner stator 20.

External stator 10 and inner stator 20 are placed in stator fixed plate 60, and output shaft 40 is located in stator fixed plate 60 The heart, is connected by bearing 50 with stator fixed plate 60, in the axial direction of output shaft 40, rotor fixed plate 70 and stator fixed plate 60 arranged for interval, rotor fixed plate 70 is connected with output shaft 40 and rotor 30.

As depicted in figs. 1 and 2, in the present embodiment, it is necessary to further illustrate, the motor 100 mainly includes three layers Structure, i.e. stator winding excitation side, stator permanent magnet excitation side, and reluctance rotor 30, stator winding excitation side and stator permanent magnet Excitation side can be arranged in the outermost layer and innermost layer of the radial direction of motor 100 as the part of stator, it is also possible to anti- It, that is, be arranged in innermost layer and outermost layer, and rotor 30 is located at the centre of stator winding excitation side and stator permanent magnet excitation side, And interval is kept by fixed the air gap therewith.

Stator winding excitation side（That is external stator 10）Be made up of high permeability material piecemeal external stator conducting magnet core 11 and The stator winding 12 of winding thereon is constituted, and stator winding 12 can be single-phase or multiphase, and its actual block count n1 is with it along motor 100 it is circumferential fill up full circle needed for theoretical block count n0（External stator corresponding to the i.e. one stator conducting magnet core of full circumferences The number of conducting magnet core 11）Meet 1≤n1<N0, the span of the coil of stator winding 12 can for 1 or arbitrarily with piecemeal conducting magnet core The positive integer that 11 numbers of teeth match, the number of teeth of each piecemeal conducting magnet core 11 is Ns0, and slot-pitch angle meets α 0=2 π/Ns0/n0, when When being passed through the driving current with the corresponding number of phases of stator winding 12, it is ps that each stator winding excitation side piecemeal produces number of pole-pairs Magnetic field.

Stator permanent magnet excitation side（That is inner stator 20）The inner stator conducting magnet core 21 and permanent magnet being made up of high permeability material 22 are constituted, and permanent magnet 22, along the circumferential uniform arrangement of motor 100, can use any installation of rotor 30 in the way of alternately polarity Form, i.e., it is built-in（IPM）, surface-adhered type（SPM）, surface flush type（Inset-SPM）Etc..The theory of stator permanent magnet side Block count is n0（The number of the inner stator conducting magnet core 21 corresponding to the i.e. one stator conducting magnet core of full circumferences）, its reality Block count is identical with stator winding excitation side, and the number of permanent magnet 22 of stator permanent magnet excitation side is npm0, the stator of each piecemeal The Equivalent Magnetic Field number of pole-pairs that permanent magnet excitation side produces is pf=npm0/2.

Reluctance rotor（That is rotor 30）What the conducting magnet core 31 and non-magnet material being made up of high permeability material were constituted non-leads Magnetic spacer block 32 is arranged alternately one complete circumference of composition（Closed ring）, not in the form of piecemeal, the iron of reluctance rotor Pellet number is pr.Preferably, the quantity of conducting magnet core 31 of reluctance rotor should meet pr=n0 | ps ± pf |.Reluctance rotor passes through Rotor fixed plate 70 and output shaft 40 are joined directly together and connect, used as the torque output member of motor 100.

The motor 100 of the utility model embodiment is described in detail below according to multiple embodiments are combined.

Embodiment one

As depicted in figs. 1 and 2, external stator 10 is arranged in the outermost of the radial direction three-decker of motor 100, and inner stator 20 is arranged In the most inner side of the radial direction three-decker of motor 100, rotor 30 is located at the centre of two-layer stator, and keeps one between two-layer stator Fixed gap, external stator 10 and inner stator 20 are respectively placed in stator fixed plate 60, rotor 30 by rotor fixed plate 70 with Output shaft 40 is directly connected to, and output shaft 40 is connected by bearing 50 with stator fixed plate 60, and keeps rotational independence.

The actual block count n1=3 of external stator 10, theoretical block count n0=12, external stator 10 is by the He of external stator conducting magnet core 11 Coiling stator winding 12 thereon is constituted, the number N of teeth s0=3 of each external stator piecemeal, and stator winding 12 is three-phase windings, around Group coil spread is 1, and when three-phase current is injected, each external stator piecemeal produces the magnetic field of number of pole-pairs ps=1.

The block count of inner stator 20 is also n1=3, is made up of inner stator conducting magnet core 21 and permanent magnet 22, and permanent magnet 22 is adopted Parallel magnetization mode is used, is uniformly placed in inner stator conducting magnet core 21 in the relative mode of identical polar permanent magnet 22, produced Equivalent permanent magnetic field number of pole-pairs pf=1.5, rotor 30 is made up of conducting magnet core 31 and non-magnetic spacer block 32, and rotor 30 is led The block number pr=30 of magnetic core 31, meets preferred formula, i.e. pr=n0 | ps ± pf |.

Embodiment two

As shown in Figures 3 to 5, external stator 10 is arranged in the outermost of the radial direction three-decker of motor 100, and inner stator 20 is arranged In the most inner side of the radial direction three-decker of motor 100, rotor 30 is located at the centre of two-layer stator, and keeps certain with two-layer stator Gap, external stator 10 and inner stator 20 are placed in stator fixed plate 60, and rotor 30 is by rotor fixed plate 70 and output shaft 40 It is directly connected to, output shaft 40 is connected by bearing 50 with stator fixed plate 60, and keeps rotational independence.

The actual block count n1=1 of inner stator 20, theoretical block count n0=16, inner stator 20 is by the He of inner stator conducting magnet core 21 Coiling stator winding 23 thereon is constituted, the number N of teeth s0=3 of each default sub-piecemeal, and stator winding 23 is three-phase windings, around Group coil spread is 1, and when three-phase current is injected, each default sub-piecemeal produces the magnetic field of number of pole-pairs ps=1.

The block count of external stator 10 is also n1=1, is made up of external stator conducting magnet core 11 and permanent magnet 13, and permanent magnet 13 is adopted With parallel magnetization, be uniformly placed in each external stator 10 in the relative mode of identical polar permanent magnet 13, generation it is equivalent forever Magnetic magnetic field number of pole-pairs pf=3.Rotor 30 is made up of conducting magnet core 31 and non-magnetic spacer block 32, the conducting magnet core 31 of rotor 30 Block number pr=64, meet preferred formula, i.e. pr=n0 | ps ± pf |.

Additionally, the inner stator conducting magnet core 21 and rotor 30 of the external stator conducting magnet core 11 of external stator 10, inner stator 20 Conducting magnet core can be made using the high-permeability material such as silicon steel sheet, cobalt steels piece, permalloy, SMC, but the utility model is not It is only limitted to this.Stator winding 23 can be single-phase or multiphase, and the form of stator winding 23 can be fractional-slot winding or integer groove Winding, the material of stator winding 23 can be using copper enamel-covered wire, aluminium enamel-covered wire etc., but the utility model makes specific limit not to this It is fixed.

Inner stator 20 can be that is, built-in using any installation form of Conventional permanent magnet rotor 30（IPM）, surface-adhered type （SPM）, surface flush type（Inset-SPM）Deng, permanent magnet 13 can using ferro-aluminum boron, ferrite, SmCo, aluminium nickel cobalt is contour rectifys Stupid power permanent-magnet material is made, and the utility model is also not limited to this.

The external diameter of rotor of the present utility model 30 can freely be chosen with loadtype, will not substantially change stator body Product, and on the premise of the external diameter of rotor 30 changes, the consumption of permanent magnet 13 will not be significantly affected.In certain stator excitation magnetic field Under effect, the output torque of motor 100 increases with the external diameter of motor 100 into quadratic relationship, therefore, it can substantially do not changing over this And in the case of stator volume, by increasing the external diameter of rotor 30, greatly improve the torque density of motor 100.

Thus, by the equal external stator piecemeal of the circumferentially disposed one-to-one corresponding and quantity along motor 100 and inner stator point Block, setting is spaced apart with external stator 10 in the inner stator in the radial direction 20 of motor 100, and inner stator 20 is located at external stator 10 Inner side, rotor 30 is formed as the closed-loop shaped circumferentially extended along motor 100, is arranged between external stator 10 and inner stator 20, so When the external diameter of rotor 30 changes, the volume of stator will not occur significant change, save the cost of stationary part, while improve Low speed high torque drives the efficiency of motor 100 under occasion, simple structure to can apply to household electrical appliance, electric automobile, wind-force hair The occasions such as electricity.The simple structure of the motor 100, system effectiveness are high, cost-effective, have a wide range of application.

Other compositions of motor 100 and operation according to the utility model embodiment are for those of ordinary skill in the art Speech is all known, is not detailed herein.

In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " suitable The orientation or position relationship of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " are based on orientation shown in the drawings Or position relationship, be for only for ease of description the utility model and simplify and describe, rather than indicate or imply signified device or Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the present utility model System.

Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or Implicitly include at least one this feature.In description of the present utility model, " multiple " is meant that at least two, such as two It is individual, three etc., unless otherwise expressly limited specifically.

In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integrally；Can be Mechanically connect, or electrically connect or can communicate each other；Can be joined directly together, it is also possible to by the indirect phase of intermediary Even, can be two element internals connection or two interaction relationships of element, unless otherwise clearly restriction.For this For the those of ordinary skill in field, concrete meaning of the above-mentioned term in the utility model can be as the case may be understood.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term State and be necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be with Combined in an appropriate manner in any one or more embodiments or example.Additionally, in the case of not conflicting, this area Technical staff the feature of the different embodiments or example described in this specification and different embodiment or example can be entered Row is combined and combined.

Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is Exemplary, it is impossible to it is interpreted as to limitation of the present utility model, one of ordinary skill in the art is in scope of the present utility model It is interior above-described embodiment to be changed, changed, replaced and modification.

Claims (13)

1. a kind of motor, it is characterised in that including：

External stator, the external stator includes at least one external stator piecemeal, and the quantity of the external stator piecemeal is less than along the electricity The circumference of machine connect into closed-loop shaped needed for external stator piecemeal quantity；

Inner stator, the inner stator is radially spaced the motor positioned at the inner side of the external stator and with the external stator Set, the inner stator includes at least one default piecemeal, the number of the quantity of the default sub-piecemeal and the external stator piecemeal Amount is identical；

Rotatable rotor, the rotor is the closed-loop shaped of the circumferentially extending along the motor, and the rotor is in the motor Radially positioned at the inner side of the external stator and the outside of the inner stator.

2. motor according to claim 1, it is characterised in that the external stator piecemeal is multiple and along the week of the motor To uniform arrangement, the default sub-piecemeal is circumferential uniform arrangement multiple and along the motor.

3. motor according to claim 1, it is characterised in that the external stator piecemeal and the default sub-piecemeal are along described The circumference of motor is oppositely disposed one by one.

4. motor according to claim 1, it is characterised in that the rotor includes：

Multiple conducting magnet cores；

Multiple non-magnetic spacer blocks, multiple conducting magnet cores and multiple non-magnetic spacer blocks are handed over along the circumference of the motor For arrangement.

5. motor according to claim 4, it is characterised in that the external stator piecemeal includes：

External stator conducting magnet core；

Stator winding, the stator winding is wound on the external stator conducting magnet core.

6. motor according to claim 5, it is characterised in that the default sub-piecemeal includes：

Inner stator conducting magnet core；

Permanent magnet, the permanent magnet is located on the inner stator conducting magnet core.

7. motor according to claim 6, it is characterised in that the number of pole-pairs in the magnetic field that each described external stator piecemeal is produced It is ps, the quantity of the permanent magnet of the inner stator is npm0 and the number of pole-pairs in the magnetic field of each default sub-piecemeal generation is pf =npm0/2, the quantity of the conducting magnet core of the rotor is pr and satisfaction：

Pr=n0 | ps ± pf |, wherein, the number of external stator piecemeals of the n0 for needed for connecting into closed-loop shaped along the circumference of the motor Amount.

8. motor according to claim 4, it is characterised in that the default sub-piecemeal includes：

Inner stator conducting magnet core；

Stator winding, the stator winding is wound on the inner stator conducting magnet core.

9. motor according to claim 8, it is characterised in that the external stator piecemeal includes：

External stator conducting magnet core；

Permanent magnet, the permanent magnet is located on the external stator conducting magnet core.

10. motor according to claim 9, it is characterised in that the magnetic field that each described default sub-piecemeal is produced it is extremely right Number is ps, and the quantity of the permanent magnet of the external stator is npm0 and the number of pole-pairs in the magnetic field of each external stator piecemeal generation is Pf=npm0/2, the quantity of the conducting magnet core of the rotor is pr and satisfaction：

Pr=n0 | ps ± pf |, wherein, the number of default sub-piecemeals of the n0 for needed for connecting into closed-loop shaped along the circumference of the motor Amount.

11. motor according to claim 6 or 9, it is characterised in that also include：

Stator fixed plate, the inner stator conducting magnet core is radially located in the external stator conducting magnet core the motor Side and with the external stator conducting magnet core interval setting；

Rotor fixed plate, the rotor fixed plate and the stator fixed plate along the axially spaced arrangement of the motor and with it is defeated Shaft is connected, and the rotor is located in the rotor fixed plate.

12. motors according to claim 5, it is characterised in that each described external stator piecemeal have multiple stator tooths and The multiple teeth groove between adjacent stators tooth are located at respectively, and the quantity of the stator tooth of each external stator piecemeal is Ns0, each institute The slot-pitch angle for stating the adjacent sheaves of external stator piecemeal is α 0 and satisfaction：

α 0=2 π/Ns0/n0, wherein, the number of external stator piecemeals of the n0 for needed for connecting into closed-loop shaped along the circumference of the motor Amount.

13. motors according to claim 1, it is characterised in that in the central axis of the external stator, the inner stator The central axes of heart axis and the rotor.