CN112311177A - Motor and equipment comprising same - Google Patents

Abstract

The invention provides a motor and equipment comprising the same. The motor comprises a stator assembly and a rotor assembly; the stator assembly comprises a first stator and at least one second stator; the mover assembly includes at least one mover; the stators in the stator assembly and the movers in the mover assembly are oppositely arranged at intervals, and an air gap exists between the adjacent stators and the movers; each stator has the same pole pair number; a first winding is disposed on the first stator. By adopting the technical scheme of the invention, the magnetic flux saturation limit of a single stator is overcome by arranging the plurality of stators, the maximum output of the motor can be improved, and the current protection degree is reduced.

Description

Motor and equipment comprising same

The present application claims priority from chinese patent application No. 201911179316.0 entitled "an electric motor and apparatus including the same" filed on 27.11.2019, the entire contents of which are incorporated herein by reference.

Technical Field

The invention relates to the technical field of electromagnetism, in particular to a motor and equipment comprising the motor.

Background

With the rapid development of society and science and technology in recent two years, people have increasingly demanded motors capable of outputting large torque/force or high power density.

However, the performance of the motor in this respect has not been satisfactory to date.

Disclosure of Invention

In view of this, embodiments of the present invention provide a motor and an apparatus including the motor.

A first aspect of the present invention provides a motor, comprising a stator assembly and a mover assembly; the stator assembly comprises a first stator and at least one second stator; the mover assembly includes at least one mover;

the stators in the stator assembly and the movers in the mover assembly are oppositely arranged at intervals, and an air gap exists between the adjacent stators and the movers;

each stator has the same pole pair number;

a first winding is arranged on the first stator.

Further, the first stator and the second stator form the same number of teeth on a face corresponding to the mover to have the same number of pole pairs; and/or the first stator and the second stator are provided with the same number of permanent magnets corresponding to the surfaces of the rotor so as to have the same pole pair number.

Further, when one side of the first stator is provided with the rotor;

the first stator comprises a first stator yoke and N first large teeth formed by extending the first stator yoke to the rotor, wherein N is more than or equal to 3; or

When the two sides of the first stator are respectively provided with the rotor;

the first stator comprises N third large teeth which extend towards the directions of the rotors on the two sides respectively, wherein N is more than or equal to 3.

Further, the second stator includes a structure to have the same number of pole pairs as the first stator;

the second stator comprises a second stator yoke and N hidden teeth formed on the second stator yoke corresponding to the surface of the rotor assembly; and/or

The second stator comprises a second stator yoke and N second large teeth formed by extending the second stator yoke towards the direction of the mover arranged at one side, and second windings are arranged on the second large teeth; and/or

The second stator comprises N fourth large teeth which are formed by extending towards the rotor arranged on two sides respectively, and second windings are arranged on the fourth large teeth; and/or

The second stator comprises a second stator yoke part, fourth stator permanent magnets are attached to the surface, corresponding to the rotor, of the second stator yoke part, and the directions of magnetic fields formed in the air gap by the two adjacent fourth stator permanent magnets are opposite to each other so as to form a pair of poles.

Furthermore, each first large tooth forms n first stator small teeth corresponding to the surface of the first rotor; a first stator small groove is formed between every two adjacent first stator small teeth, wherein n is more than or equal to 2;

when the second stator comprises the non-salient teeth, the second big teeth and/or the fourth big teeth; n second small stator teeth are formed on each hidden tooth, the second large tooth and/or the fourth large tooth; and a second small stator slot is formed between every two adjacent small stator teeth.

Further, at least part of the first stator small grooves are internally provided with first stator permanent magnets; the magnetic field directions formed by the first stator permanent magnets corresponding to the same rotor in the air gap are the same; and/or

Second stator permanent magnets are arranged in at least part of the second stator small slots; and the magnetic field directions of the second stator permanent magnets which are positioned on the same second stator and correspond to the same mover in the air gap are the same.

Further, when the two sides of the second stator are respectively provided with the rotor, the second stator comprises the following structure so as to have the same number of pole pairs as the first stator;

the second stator comprises N independent stator units which are sequentially arranged along the motion direction of the rotor;

each stator unit comprises n stator magnetic conduction parts which are sequentially arranged at intervals along the moving direction of the rotor, wherein n is more than or equal to 2;

and a third stator permanent magnet is arranged between every two adjacent stator magnetic conduction parts.

Furthermore, the rotor respectively arranged at two sides of the second stator is respectively provided with a first rotor permanent magnet and/or a second rotor permanent magnet corresponding to the second stator;

the third stator permanent magnet and the first rotor permanent magnet and/or the second rotor permanent magnet form the same magnetic field direction in the air gap.

Furthermore, at least one end or any position of the n stator magnetic conduction parts is connected into a whole through a stator connecting part; or the n stator magnetic conduction parts are prefabricated into a whole.

Further, the mover includes a mover yoke; a plurality of mover small teeth are formed on the surface of the mover yoke part corresponding to the stator component, and a mover small groove is formed between every two adjacent mover small teeth; and/or

The rotor comprises surface-mounted permanent magnets which are sequentially arranged along the motion direction of the rotor; the magnetic field directions formed by the two adjacent surface-mounted permanent magnets in the air gap are opposite to each other so as to form a pair of poles; and/or

The rotor comprises a plurality of spoke-shaped magnetic conduction parts and a fifth rotor permanent magnet embedded between two adjacent spoke-shaped magnetic conduction parts; the magnetic fields of two adjacent fifth rotor permanent magnets are opposite in polarity along the motion direction of the rotor to form a pair of poles.

Further, at least part of the mover small grooves are internally provided with first mover permanent magnets.

Further, the first rotor permanent magnet is in the same direction as a magnetic field formed in the air gap by a first stator permanent magnet correspondingly arranged on the first stator, a second stator permanent magnet correspondingly arranged on the second stator and/or a third stator permanent magnet correspondingly arranged on the second stator.

Further, when the rotors are respectively arranged on two sides of the first stator, if the magnetic field directions formed by the first rotor permanent magnets on the rotors on the two sides in the air gap are opposite, the rotor small teeth on the rotors on the two sides are respectively staggered by half pitch or pole pitch; and if the magnetic field directions formed by the first rotor permanent magnets on the rotors on the two sides in the air gap are the same, the rotor small teeth on the rotors on the two sides are aligned.

Further, when two sides of the rotor are respectively provided with the stator assemblies;

the rotor comprises a plurality of rotor magnetic conduction parts which are arranged at intervals along the motion direction of the rotor;

a second rotor permanent magnet is arranged between two adjacent rotor magnetic conduction parts;

further, the second rotor permanent magnet, the first stator permanent magnet correspondingly arranged on the first stator, the second stator permanent magnet correspondingly arranged on the second stator and/or the third stator permanent magnet correspondingly arranged on the second stator have the same magnetic field direction formed in the air gap.

Furthermore, at least one end or any middle position of the rotor magnetic conduction parts are connected into a whole through a rotor connecting part; or the plurality of rotor magnetic conduction parts are prefabricated into a whole.

Further, when the movers are respectively arranged on two sides of the first stator, if the magnetic field directions formed by the second mover permanent magnets on the movers respectively positioned on the two sides in the air gap are opposite, the mover magnetic conduction parts on the movers positioned on the two sides are respectively staggered by half magnetic conduction part distance or pole distance; and if the magnetic field directions formed by the second rotor permanent magnets on the rotors on the two sides in the air gap are the same, the rotor magnetic conduction parts on the rotors on the two sides are aligned.

Further, N is more than or equal to 3 and less than or equal to 9.

Further, the stator assembly includes at least two of the second stators; and/or

The mover assembly comprises at least two movers; and/or

Each mover in the mover assembly has the same number of pole pairs.

A second aspect of the present invention provides a motor, comprising a stator assembly and a mover assembly; the stator assembly comprises at least a first stator; the mover assembly includes at least two movers;

the stators in the stator assembly and the movers in the mover assembly are oppositely arranged at intervals, and an air gap exists between the adjacent stators and the movers; the at least two rotors are respectively arranged on two sides of the first stator;

each stator in the stator assembly has the same pole pair number; each mover in the mover assemblies has the same number of pole pairs;

a first winding is arranged on the first stator.

Further, the first stator comprises third large teeth which extend towards the rotors respectively arranged at the two sides; or

The first stator comprises third large teeth which extend towards the rotors arranged on the two sides respectively; the third big teeth comprise first surfaces and second surfaces corresponding to the movers on the two sides; the first surface and the second surface form first stator small teeth respectively; or

The first stator comprises third large teeth which extend towards the rotors arranged on the two sides respectively; the third big teeth comprise first surfaces and second surfaces corresponding to the movers on the two sides; the first surface and the second surface form first stator small teeth respectively; at least part of the first stator small teeth are internally embedded with first stator permanent magnets.

Further, the stator assembly further comprises at least one second stator; the second stator comprises the following structure:

the second stator comprises a second stator yoke part and hidden teeth formed on the surface of the second stator yoke part corresponding to the rotor assembly; and/or

The second stator comprises a second stator yoke and a second large tooth formed by extending the second stator yoke towards the direction of the mover arranged at one side, and a second winding is arranged on the second large tooth; and/or

When the two sides of the second stator are respectively provided with the rotor, the second stator comprises fourth large teeth which are respectively formed by extending towards the directions of the rotors respectively arranged at the two sides, and second windings are arranged on the fourth large teeth; and/or

When the two sides of the second stator are respectively provided with the rotor, the second stator comprises a plurality of independent stator units which are sequentially arranged along the motion direction of the rotor; each stator unit comprises a plurality of stator magnetic conduction parts which are sequentially arranged at intervals along the moving direction of the rotor; a third stator permanent magnet is arranged between every two adjacent stator magnetic conduction parts; and/or

The second stator comprises a second stator yoke part, second stator permanent magnets are attached to the surface, corresponding to the rotor assembly, of the second stator yoke part, and the directions of magnetic fields formed in the air gap by the two adjacent second stator permanent magnets are opposite to each other so as to form a pair of poles.

Further, the mover includes the following structure:

the mover includes a mover yoke; a plurality of mover small teeth are formed on the surface of the mover yoke part corresponding to the stator component, and a mover small groove is formed between every two adjacent mover small teeth; and/or

The mover includes a mover yoke; a plurality of mover small teeth are formed on the surface of the mover yoke part corresponding to the stator component, and a mover small groove is formed between every two adjacent mover small teeth; rotor permanent magnets are arranged in at least part of the rotor small grooves; and/or

When the two sides of the rotor are respectively provided with the stators; the rotor comprises a plurality of rotor magnetic conduction parts which are arranged at intervals along the motion direction of the rotor; a second rotor permanent magnet is arranged between two adjacent rotor magnetic conduction parts; and/or

The rotor comprises surface-mounted permanent magnets which are sequentially arranged along the motion direction of the rotor; the magnetic field directions formed by the two adjacent surface-mounted permanent magnets in the air gap are opposite to each other so as to form a pair of poles; and/or

The rotor comprises a plurality of spoke-shaped magnetic conduction parts and a fifth rotor permanent magnet embedded between two adjacent spoke-shaped magnetic conduction parts; the magnetic fields of two adjacent fifth rotor permanent magnets are opposite in polarity along the motion direction of the rotor to form a pair of poles.

Further, the at least two movers include a first mover and a second mover that are adjacent; when the first rotor and the second rotor are respectively positioned at two sides of a certain stator;

when at least part of the mover small slots are internally provided with mover permanent magnets;

if the directions of magnetic fields formed by a third rotor permanent magnet on the first rotor and a fourth rotor permanent magnet on the second rotor in the air gap are opposite, a third rotor small tooth of the first rotor and a fourth rotor small tooth of the second rotor are respectively staggered by half of a tooth pitch or a pole pitch; if the magnetic field directions formed by a third rotor permanent magnet on the first rotor and a fourth rotor permanent magnet on the second rotor in the air gap are the same, a third rotor small tooth of the first rotor is aligned with a fourth rotor small tooth of the second rotor; and/or

When the rotor comprises surface-mounted permanent magnets which are sequentially arranged along the motion direction of the rotor;

if the magnetic field directions formed by the third rotor permanent magnet on the first rotor and the fourth rotor permanent magnet on the second rotor aligned in position in the air gap are opposite, the magnetic field directions formed by the stator permanent magnets arranged on the stator and respectively corresponding to the first rotor and the second rotor in the air gap are opposite; if the magnetic field directions formed by the third rotor permanent magnet and the fourth rotor permanent magnet aligned in position in the air gap are the same, the magnetic field directions formed by the stator permanent magnets arranged on the stator and respectively corresponding to the first rotor and the second rotor in the air gap are the same; and/or

When the rotor comprises a plurality of spoke-shaped magnetic conduction parts and a fifth rotor permanent magnet embedded between two adjacent spoke-shaped magnetic conduction parts;

if the polarities of the magnetic fields of the third rotor permanent magnet on the first rotor and the fourth rotor permanent magnet on the second rotor which are aligned in position are opposite along the moving direction of the rotors, the directions of the magnetic fields formed in the air gaps by the stator permanent magnets which are arranged on the stator and respectively correspond to the first rotor and the second rotor are the same; if the polarities of the magnetic fields of the third rotor permanent magnet and the fourth rotor permanent magnet which are aligned in position are the same along the moving direction of the rotor, the directions of the magnetic fields formed in the air gap by the stator permanent magnets which are arranged on the stator and respectively correspond to the first rotor and the second rotor are opposite.

A third aspect of the invention provides apparatus comprising an electric machine, the apparatus comprising at least one electric machine as claimed in any one of the above.

By arranging the multiple stators, the magnetic flux saturation limit of a single stator is overcome, the maximum output of the motor can be improved, and the current protection degree is reduced.

In addition, by arranging the multilayer stator and/or rotor, the magnetic flux saturation limit of a single stator and/or rotor is overcome, the maximum output of the motor can be further improved, and the current protection degree is reduced.

In addition, the windings with fewer sets of numbers are arranged to drive a greater number of stators to further push the rotor to move, so that the copper loss, the size and the weight of the motor can be reduced.

In addition, the stators are arranged on the two sides of the rotor, and the problem of unbalanced magnetic tension of the number of single slots can be solved due to the fact that the two sides are offset.

In addition, when the number of teeth is small, the problem of eccentric force is easy to generate, and the stators arranged on the two sides can compensate force on the two sides of the rotor, so that the problem of eccentric force is reduced, and the fluctuation generated by the motor is reduced.

The two sides of the stator are respectively provided with the rotor, and each stator and each rotor have the same pole pair number; therefore, each stator and each rotor have the same frequency, so that a plurality of rotors can be driven to move by at least one stator.

In addition, the limitation of magnetic flux saturation of a single rotor is overcome by arranging the multilayer rotors, and the maximum output of the motor can be improved.

In addition, through the effect of first stator with the active cell of both sides simultaneously, can reduce the unbalanced force of motor like this, and make the number of teeth of the big tooth of first stator or the number of slots between two adjacent big teeth can adopt odd number or even number as required, can improve the flexibility of tooth's socket ratio like this, and then provide more flexibility for motor design.

In addition, by adopting the double-stator structure, compared with the double-stator structure described in the above embodiment, the mover is provided with a yoke structure with higher rigidity, or the volume of other rigid structures of the mover itself is increased, so that the mechanical strength of the mover is higher, and the stability of the motor is better.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the embodiments and the drawings used in the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a schematic view of a first overall structure of a motor according to an embodiment of the present invention;

fig. 2 is a partially enlarged schematic view of a first overall structure of the motor according to the embodiment of the present invention;

fig. 3 is a schematic view of a second overall structure of the motor according to the embodiment of the present invention;

fig. 4 is a partially enlarged schematic view of a second overall structure of the motor according to the embodiment of the invention;

fig. 5 is a schematic view of a third overall structure of the motor according to the embodiment of the present invention;

fig. 6 is a partially enlarged schematic view of a third overall structure of the motor according to the embodiment of the invention;

fig. 7 is a schematic view of a fourth overall structure of the motor according to the embodiment of the present invention;

fig. 8 is a partially enlarged schematic view of a fourth overall structure of the motor according to the embodiment of the invention;

fig. 9 is an enlarged view of a fifth part of the motor according to the embodiment of the present invention;

fig. 10 is a schematic view of a sixth overall structure of the motor according to the embodiment of the present invention;

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

fig. 12A is a schematic view of an eighth overall structure of the motor according to the embodiment of the present invention; fig. 12B is a schematic view of a ninth overall structure of the motor according to the embodiment of the present invention; fig. 12C is a schematic view of a tenth overall structure of the motor according to the embodiment of the present invention; fig. 12D is a schematic view of an eleventh overall structure of the motor according to the embodiment of the present invention; fig. 12E is an enlarged schematic view of a second stator magnetic conductive unit in an eighth overall structural schematic diagram of the motor according to the embodiment of the present invention; fig. 12F is a schematic diagram of a twenty-ninth overall structure of the motor according to the embodiment of the present invention; fig. 12G is a schematic diagram of a thirtieth overall structure of the motor according to the embodiment of the present invention;

fig. 13A is a schematic view of a twelfth overall structure of the motor according to the embodiment of the present invention; fig. 13B is an exploded view of a twelfth schematic overall structure of the motor according to the embodiment of the present invention;

fig. 14A is a schematic diagram of a thirteenth overall structure of the motor according to the embodiment of the present invention; fig. 14B is an exploded view of a thirteenth overall structural schematic diagram of the motor according to the embodiment of the present invention;

fig. 15A is a first partially enlarged structural schematic view of a first stator small tooth of the motor according to the embodiment of the present invention; fig. 15B is a second partially enlarged structural schematic view of a first stator small tooth of the motor according to the embodiment of the present invention;

fig. 16 is a first partially enlarged structural schematic view of a mover of the motor according to the embodiment of the present invention;

fig. 17A is an enlarged schematic view of a fourteenth part of the motor according to the embodiment of the present invention; fig. 17B is a schematic diagram of a fifteenth partial enlarged structure of a motor rotor according to an embodiment of the present invention;

fig. 18A is an enlarged schematic view of a sixteenth portion of a motor according to an embodiment of the present invention; fig. 18B is an enlarged schematic view of a seventeenth portion of a motor according to an embodiment of the present invention; fig. 18C is an enlarged schematic diagram of an eighteenth part of the motor according to the embodiment of the invention; fig. 18D is a schematic diagram of a nineteenth enlarged partial structure of the motor according to the embodiment of the present invention;

fig. 19A is a schematic diagram of a twentieth perspective structure of the motor according to the embodiment of the invention; fig. 19B is a schematic diagram of a twentieth plane structure of the motor according to the embodiment of the invention;

fig. 20A is a schematic perspective view of a twenty-first structure of a motor according to an embodiment of the present invention; fig. 20B is a schematic diagram of a twenty-first explosion structure of the motor according to the embodiment of the present invention;

fig. 21 is a schematic diagram of a twenty-second structure of the motor according to the embodiment of the invention;

fig. 22A is a schematic diagram of a twenty-third partially enlarged structure of the motor according to the embodiment of the present invention; fig. 22B is a schematic diagram of a twenty-fourth partially enlarged structure of the motor according to the embodiment of the present invention; fig. 22C is a schematic diagram of a twenty-fifth partially enlarged structure of the motor according to the embodiment of the present invention; fig. 22D is a schematic diagram of a twenty-sixth partially enlarged structure of the motor according to the embodiment of the present invention;

fig. 23A is a schematic diagram of a twenty-seventh partially enlarged structure of a motor according to an embodiment of the present invention; fig. 23B is a schematic diagram of a twenty-eighth partially enlarged structure of the motor according to the embodiment of the present invention.

Description of the symbols of the drawings: 10, a motor; 11 a first stator; 12a second stator; 13a mover; 13' a first mover; 13' second mover; 14a first winding; 17a second winding; an L air gap; 111 a first stator yoke; 112 first large tooth; 113 third large tooth; 114 fourth large tooth; 121 a second stator yoke; 122 second large tooth; 123 hidden teeth; 124 a stator unit; 131 mover yokes; 134' a first mover yoke; 134 "second mover yoke; 132 mover magnetic conductive part; 132 'a first mover magnetic conductive portion, 132' a second mover magnetic conductive portion; 133 mover connecting parts; 135' a first spoke-like magnetically permeable portion; 135' second spoke-like magnetic conductive part; 1121 first stator serration; 1211 second stator teeth; 1241 a stator magnetic conductive part; 1311 first mover small teeth; 1312 second mover small teeth; 1341' third mover toothlet; 1341 "fourth mover tine; m1 first permanent magnet; m2 second permanent magnet; m3 third permanent magnet; m4 fourth permanent magnet; m5 fifth permanent magnet; m6 sixth permanent magnet; m7 seventh permanent magnet; m8 eighth permanent magnet; m9 ninth permanent magnet; m10 tenth permanent magnet.

Detailed Description

In order to make the technical solutions of the embodiments of the present invention better understood, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-11, in one embodiment, an electric machine 10 is provided.

Specifically, the motor 10 may be any type of motor that has been developed now or in the future, such as: the dividing in the relative movement manner of the stator and the first mover of the motor may include: a rotary motor (as shown in fig. 1-6) or a linear motor (as shown in fig. 7-9, 12F); taking the magnetic flux profile of the rotating electrical machine as an example, an axial flux rotating electrical machine (as shown in fig. 13A-14B), a radial flux rotating electrical machine (as shown in fig. 1-6), or an axial-radial mixed flux rotating electrical machine (the drawings are omitted) may be included.

Specifically, the motor can be an electric motor which converts electric energy into kinetic energy and outputs the kinetic energy; the generator can also convert kinetic energy into electric energy to be output. The two can be realized by adopting the same structure in some cases, and the functions of the generator or the motor are realized by adopting different electric connection and mechanical connection modes for the same structure. For convenience of understanding, the present embodiment will be described in further detail below by taking the motor 10 as an example.

An embodiment of the present invention provides a motor, including: the stator assembly and the rotor assembly;

the stator assembly comprises a first stator and at least one second stator; the mover assembly includes at least one mover;

the stators in the stator assembly and the movers in the mover assembly are oppositely arranged at intervals, and an air gap exists between the adjacent stators and the movers to form a magnetic gap;

it should be noted that the stator in the stator assembly and the mover in the mover assembly may be arranged in a manner that each stator and each mover are arranged in a spaced manner, or may be arranged in a manner that a part of the stators and the movers are arranged in a spaced manner, for example: two rotors are correspondingly arranged between the two stators in parallel. Preferably, each stator and each mover are spaced relative to each other (as shown in fig. 12A-12D).

As shown in fig. 1-11, for ease of understanding, in one embodiment, a motor 10 includes a stator assembly and a mover assembly; the stator assembly comprises a first stator 11 and a second stator 12; the mover assembly includes one mover 13 as an example for detailed description.

The first stator 11, the mover 13 and the second stator 12 are arranged at intervals, that is, the first stator 11 and the second stator 12 are respectively located at two sides of the mover 13; and air gaps L are respectively formed among the first stator 11, the mover 13 and the second stator 12.

Each stator in the stator assembly has the same pole pair number. Since each stator has the same pole pair number, each stator has the same frequency, so that a plurality of stators without windings can be driven by one stator with windings.

Specifically, in order to make each stator have the same number of pole pairs, the same number of teeth may be formed on the surface of each stator corresponding to the mover, such as: the surface of each stator corresponding to the rotor forms the same number of small stator teeth; or each stator corresponds to the rotor to form large teeth and/or hidden teeth with the same number, and further, in one embodiment, each large tooth or hidden tooth is provided with small stator teeth with the same number; or the same number of separate magnetic conducting elements (the magnetic conducting elements are regarded as teeth), etc. It is preferable to form a structure of large teeth and/or hidden teeth so that the output of the motor can be improved. In one embodiment, it may also be indicated that the same number of permanent magnets or the like are provided for each stator corresponding to the face of the mover. For convenience of understanding, the following embodiments will be described in further detail by taking the first stator and the second stator as examples.

It should be noted that, the pole pair number of the stator +/-the pole pair number of the winding is equal to the pole pair number of the mover; when the number of pole pairs of the stator is fixed, the number of pole pairs of each rotor can be correspondingly known according to the number of pole pairs of the windings, and if only one set of windings is arranged on one motor, the number of pole pairs of the windings is fixed, so that the number of pole pairs of each rotor is also fixed. Or when the motor includes a second stator except the first stator, and when the second stator is provided with a second winding, since the number of pole pairs of each stator is the same, when the number of pole pairs of the second winding 17 is the same as that of the first winding 14 (as shown in fig. 7 or 9), the number of pole pairs of each mover is also the same. In addition, as shown in fig. 12A to 12D, in some cases, when the movers 13 are respectively disposed on both sides of the first stator 11 or the second stator of the motor 10, the above-mentioned each stator having the same number of pole pairs also means that the first stator 11 or the second stator 12 respectively has the same number of pole pairs corresponding to both ends of the mover 13.

The first stator 11 is provided with a first winding 14.

It should be noted that, the first winding 14 provided on the first stator 11 may be only provided on the first stator; in addition, a second winding may be provided on the second stator. Preferably only set up first winding on first stator, as long as guarantee that each stator has the same number of pole pairs, just can realize driving one or more second stators through first stator, and then promote the active cell motion, owing to reduced the use of winding, the copper loss that can reduce the winding of motor and bring, in addition, also corresponds the use that reduces magnetic conduction portion, and then reduces the volume and the weight of motor.

Specifically, the first winding may be disposed on the first stator in various configurations, such as: according to the following embodiments, the first large tooth or the third large tooth may be formed on the first stator, the first winding may be disposed on the first large tooth or the third large tooth (for example, wound on the first large tooth or accommodated in the large slot between the first large teeth), and so on; or the first stator forms a plurality of first stator serrations directly on the yoke, winds a winding on the plurality of first stator serrations, and so on. The winding manner of the first winding 14 may be centralized or distributed, and the present embodiment is not limited.

By adopting the technical scheme of the embodiment, the limitation of single stator magnetic flux saturation is overcome by arranging the multilayer stators, the maximum output (such as output torque/force) of the motor can be improved, and the current protection degree is reduced.

In addition, the stators are arranged on the two sides of the rotor, and the problem of unbalanced magnetic tension of the number of single slots can be solved due to the fact that the two sides are offset.

In addition, the first stator and the second stator are respectively arranged on the two sides of the rotor, and compared with a structure that the rotors are respectively arranged on the two sides of the stators, the rotor is integrally positioned between the stators, so that the output end of the rotor can be conveniently connected with the outside.

The number of the first stator in the motor may be one or more, and when the number of the first stator is plural, the first stator may be regarded as a combination of the above-described plural stator assemblies and mover assembly structures.

According to the above embodiments, the second stator and the mover are at least one. In a preferred embodiment, more than two second stators 12 and/or more than two movers 13 may be provided. Such as: as shown in fig. 12C or 12G, the motor includes two movers 13 and two second stators 12; as shown in fig. 12B, the motor includes one second stator 12 and two movers 13; as shown in fig. 12A, 12D, 12F, 14A, or 14B, the motor includes three second stators 12 and three movers 13. By arranging more layers of stators and/or movers, the magnetic flux saturation limit of a single stator and/or mover is overcome, the maximum output of the motor can be further improved, and the current protection degree is reduced.

In addition, besides the first stator, the second stator and the mover structure described in the embodiment, the motor may also include a stator and a mover in the same, similar or other structural forms, as long as the stators in the motor are ensured to have the same number of pole pairs, which all belong to the protection scope of the present invention.

For ease of understanding, the structure in which each stator has the same pole pair number is described in further detail below in specific embodiments.

As shown in FIGS. 1-6, in one embodiment, when the mover 13 is disposed at one side of the first stator 11, the first stator 11 includes a first stator yoke portion 111 and N first large teeth 112 formed by extending the first stator yoke portion 111 toward the mover 13, where N ≧ 3, i.e., N is an integer greater than or equal to 3;

it should be noted that in the concepts of the first stator yoke, the second stator yoke, the rotor yoke, and the like mentioned in this embodiment, each yoke may be prefabricated or connected by splicing, or may be divided into a plurality of independent units.

1-6, further, in an embodiment, n first stator small teeth 1121 are formed on each of the first large teeth corresponding to the surface of the rotor, where n is greater than or equal to 2, that is, n is an integer greater than or equal to 2; a first stator small groove is formed between two adjacent first stator small teeth 1121;

specifically, the first large tooth 112 may be, but is not limited to: t-shaped teeth (as shown in fig. 15B) or straight teeth (as shown in fig. 15A), which are preferred in this embodiment.

Further, in one embodiment, at least part of the first stator small grooves are provided with first stator permanent magnets; the first stator permanent magnets corresponding to the same rotor form the same magnetic field direction in the air gap L.

It should be noted that different motors form different magnetic field directions in the air gap, such as: in the radial flux rotary electric machine, the direction of the magnetic field formed in the air gap may be a radial direction; in the linear motor, the direction of the magnetic field formed in the air gap may be a direction perpendicular to the air gap.

As shown in FIGS. 12B-12D, 12F, in one embodiment, when the rotors 13 are respectively disposed on both sides of the first stator 11 of the motor 10, the first stator 11 includes N third large teeth 113 formed to extend in the direction of the rotors 13 on both sides, wherein N ≧ 3.

It should be noted that the N third large teeth may be separately and independently provided from each other (as shown in fig. 12B to 12D and 12F), or may be integrally connected to each other through the stator yoke (the drawings are omitted); preferably, the N third large teeth are arranged separately and independently from each other; or the third large teeth 113 which are arranged independently are connected into a whole through the non-magnetic conduction part (the drawing is omitted), namely, the adjacent two third large teeth 113 are fixedly connected together through the non-magnetic conduction part, no magnetic line of force passes through the non-magnetic conduction part between the adjacent two third large teeth 113, and the stator assembly of the motor can be prevented from being dislocated or loosened in the moving process through the non-magnetic conduction part. Specifically, the non-magnetic conductive portion may be made of any material that is not magnetically conductive.

Further, in an embodiment, n first stator small teeth 1121 are formed on a surface (i.e., two surfaces) of each third large tooth corresponding to the mover (i.e., n first stator small teeth are formed on each surface, so that two surfaces of the third large tooth have the same number of pole pairs), where n is greater than or equal to 2, that is, n is an integer greater than or equal to 2; a first stator small groove is formed between two adjacent first stator small teeth 1121;

further, in one embodiment, at least part of the first stator small grooves are provided with first stator permanent magnets; the magnetic field directions formed by the first stator permanent magnets in the air gap L are the same.

In one embodiment, in order to make the first stator 11 have the same number of pole pairs as described in the above embodiment; the second stator may include, but is not limited to, the following structure:

as shown in fig. 1 to 6, in one embodiment, the second stator 12 includes a second stator yoke portion 121 and N hidden teeth 123 formed on a face of the second stator yoke portion 121 corresponding to the mover 13.

The hidden teeth may be provided on one side of the second stator (when one side corresponds to the mover), or may be provided on both sides of the second stator (when both sides correspond to the mover).

1-6, further, in one embodiment, n second stator teeth 1211 are formed on each of the hidden teeth; a second stator small slot is formed between two adjacent second stator small teeth 1211.

It should be noted that the first stator small slot and the second stator small slot may be an open slot (as shown in fig. 2, 4, 6 or 8), a half-open slot, or a closed slot, etc.

1-6, further, in one embodiment, a second stator permanent magnet is disposed within at least a portion of the second stator mini-slots; the magnetic field directions formed by the second stator permanent magnets corresponding to the same mover on the same second stator in the air gap L are the same.

As shown in fig. 2, 4 or 6, for convenience of understanding, a first permanent magnet M1 (i.e., a first stator permanent magnet) corresponding to the same mover 13 is disposed in each first stator small slot on the first stator, and a second permanent magnet M2 (i.e., a second stator permanent magnet) corresponding to the same mover 13 is disposed in each second stator small slot on the second stator. The magnetic field formed by each first permanent magnet M1 in the air gap L is in the same direction; the magnetic field direction formed by each second permanent magnet M2 in the air gap L is the same; and the first permanent magnet M1 and the second permanent magnet M2 may have the same direction of the magnetic field formed in the air gap (as shown in fig. 4 or 6) or opposite directions (as shown in fig. 2).

It should be noted that the first permanent magnet M1 and the second permanent magnet M2 may be a permanent magnet (as shown in fig. 15A), a plurality of permanent magnets, or an array formed by a plurality of permanent magnets, such as: halbach array (as shown in figure 15B). The present embodiment is described by taking a Halbach array permanent magnet as an example.

As shown in FIG. 12A, 12D or 12F, in another embodiment, when the movers 13 are respectively disposed at both sides of the second stator 12, the second stator 12 includes N independent stator units 124 sequentially arranged along the moving direction of the movers 13, wherein N ≧ 3. It should be noted that the independent stator units 124 may mean that the stator units 124 are disposed at a certain distance from each other (as shown in fig. 12A or 12D); or the individual stator units 124 may be integrally connected by a non-magnetic conductive portion (the drawings are omitted).

As shown in fig. 12E, further, in an embodiment, each stator unit 124 includes n stator magnetic conductive portions 1241 arranged at intervals in sequence along the moving direction of the mover 13, and a third stator permanent magnet is disposed between the n stator magnetic conductive portions 1241, where n ≧ 2;

further, in one embodiment, when the movers 13 respectively disposed at both sides of the second stator 12 are respectively disposed with the first mover permanent magnet and/or the second mover permanent magnet corresponding to the second stator 12; the third stator permanent magnet and the first rotor permanent magnet and/or the second rotor permanent magnet form the same magnetic field direction in the air gap.

Reference is made to the following embodiments for a description of the first mover permanent magnet and the second mover permanent magnet.

For the third stator permanent magnet, reference may be made to the first stator permanent magnet and the second stator permanent magnet, and the related description of the second rotor permanent magnet in the following embodiments, which is not repeated herein.

Further, in one embodiment, at least one end of each of the n stator magnetic conduction parts of each stator unit is connected into a whole through the stator connecting part, so that the plurality of stator magnetic conduction parts are integrally and tidily arranged, and the step of splicing the single stator magnetic conduction part subsequently is reduced. For the related description of the stator connection portion, reference may be made to the related description of the mover connection portion in the following embodiments, and details are not repeated here.

By adopting the second stator with the structure, the usage of the yoke part is reduced, so that the volume and the weight of the second stator can be reduced, and the volume and the weight of the motor are further reduced.

As shown in fig. 7 or 8, in another embodiment, the second stator 12 may include a second stator yoke portion 121 and N second large teeth 122 formed by the second stator yoke portion 121 extending toward the first mover 13'; a second winding 17 is provided on the second stator 12. Specifically, the second winding 17 may be disposed on the second large tooth 122, for example, wound on the second large tooth, or disposed in a second large slot formed between two adjacent second large teeth.

Further, in one embodiment, each of the second large teeth 122 forms n second stator small teeth 1211 corresponding to a face of the first mover 13'; a second stator small slot is formed between two adjacent second stator small teeth 1211.

Further, in one embodiment, a second stator permanent magnet is arranged in at least part of the second stator small slot; and the magnetic field directions formed by the second stator permanent magnets of the corresponding rotor on the same stator in the air gap are the same.

Other relevant descriptions of the second stator and the second stator permanent magnet can be found in the above embodiment, and are not repeated herein.

As shown in fig. 9, in another embodiment, when the movers 13 are respectively disposed on two sides of the second stator 12, the second stator 12 may also include N fourth large teeth 114 respectively extending in the mover direction on two sides of the second stator, and the second winding 15 may be disposed on the fourth large teeth 114.

Further, in one embodiment, a plurality of second stator small teeth 1211 are respectively formed on two sides of each fourth large tooth 114 corresponding to the surfaces of the two side movers 13; a second stator small slot is formed between two adjacent second stator small teeth 1211.

Further, in one embodiment, a second stator permanent magnet is arranged in at least part of the second stator small slot; and the magnetic field directions formed by the second stator permanent magnets corresponding to the same rotor on the same stator in the air gap are the same.

Other relevant descriptions of the second stator and the second stator permanent magnet can be found in the above embodiment, and are not repeated herein.

As shown in fig. 18B, in one embodiment, the second stator 12 includes a second stator yoke and a fourth stator permanent magnet (e.g., a tenth permanent magnet M10) attached to a surface of the second stator yoke corresponding to the mover, and the attached tenth permanent magnet M10 may form a plurality of independent units corresponding to the first large teeth or the third large teeth of the first stator, such as: as shown in fig. 18B, the plurality of first large teeth 112 corresponding to the first stator 11 form a plurality of independent units, and in a preferred embodiment, the direction of the magnetic field formed by the fourth stator permanent magnet of each unit in the air gap is the same as the direction of the magnetic field formed by the first stator or other second stators (if a plurality of second stators are present) in the air gap, which are aligned, so as to form a larger output; or as shown in fig. 18C, the tenth permanent magnets M10 are arranged in series in order, etc., as long as the first stator 11 and the second stator 12 are ensured to have the same number of pole pairs. It should be noted that, the directions of the magnetic fields formed in the air gap by two adjacent permanent magnets M10 are opposite, so that two adjacent permanent magnets form a pair of poles, and each of the first small stator teeth 1121 at the end of the first large tooth 112 or the third large tooth 113 and the first small slot or the first permanent magnet M1 located in the first small slot form a pair of poles, and based on this principle, the number of the tenth permanent magnets M10 is adjusted according to the pole pair number of the first stator 11, so that the first stator 11 and the second stator 12 have the same pole pair, or a plurality of second stators have the same pole pair.

It should be noted that each of the above second stators may all adopt only one of the hidden teeth, the stator unit, the second large teeth, the four large teeth, or other structures with the fourth stator permanent magnet attached to the surface, or a combination of at least two of these structures.

The positions of the hidden teeth, the stator unit, the second large teeth, the fourth large teeth or the fourth stator permanent magnets of the second stator and the like do not necessarily need to completely correspond to the position of the first large teeth of the first stator, and can be staggered by a certain distance as long as the number of pole pairs between the first stator and the second stator is the same.

Further, in a preferred embodiment, the second stator adopts a structure of hidden teeth, stator units and/or surface-attached fourth stator permanent magnets, the first winding is arranged on the first big teeth or the third big teeth of the first stator, the second stator forms hidden teeth, the stator units and/or surface-attached fourth stator permanent magnets, further no winding is arranged, a plurality of sets of stators can be driven through one set of winding, and then the rotor is pushed to move.

As shown in fig. 1-4, in one embodiment, mover 13 includes a mover yoke; a plurality of mover small teeth 1311 are formed on the surface of the mover yoke corresponding to the stator assembly, and mover small grooves are formed between every two adjacent mover small teeth 1311.

For convenience of understanding, the two sides of the mover are respectively corresponding to the first stator and the second stator, which is taken as an example for further detailed description. The mover 13 includes a mover yoke 131.

A plurality of first mover small teeth 1311 are formed on the surface of the mover yoke 131 corresponding to the first stator 11, and a first mover small slot is formed between every two adjacent first mover small teeth 1311;

the mover yoke 131 has a plurality of second mover small teeth 1312 formed on a surface corresponding to the second stator 12, and a second mover small groove is formed between two adjacent second mover small teeth 1312.

As further shown in fig. 1-4, further, in an embodiment, at least a portion of the mover small slots (including the first mover small slot and the second mover small slot) are provided with a first mover permanent magnet; the first stator permanent magnet is arranged corresponding to the first stator corresponding to the first rotor permanent magnet in the first rotor small groove; and the second stator permanent magnet is correspondingly arranged on the second stator corresponding to the first rotor permanent magnet in the small slot of the second rotor, and/or the third stator permanent magnet is correspondingly arranged on the second stator.

Further, in one embodiment, the first stator permanent magnet, the corresponding second stator permanent magnet, and/or the corresponding third stator permanent magnet form the same magnetic field direction in the air gap L. Namely, the first rotor permanent magnet in the first rotor small slot and the corresponding first stator permanent magnet form the same magnetic field direction in the air gap L; and the first rotor permanent magnet in the small slot of the second rotor and the corresponding second stator permanent magnet and/or the corresponding third stator permanent magnet form the same magnetic field direction in the air gap L.

For convenience of understanding, based on the above embodiments of the first permanent magnet M1 and the second permanent magnet M2, the third permanent magnet M3 is arranged in at least part of the small slots of the first mover; and/or a fourth permanent magnet M4 is arranged in at least part of the second mover small slot. The third permanent magnet M3 has the same direction of magnetic field formed in the air gap as the first permanent magnet M1; the second permanent magnet M2 and the fourth permanent magnet M4 form a magnetic field in the same direction in the air gap. For the related description of the third permanent magnet M3 and the fourth permanent magnet M4, reference is made to the first permanent magnet M1 and the second permanent magnet M2, and the description is not repeated here.

Further, in one embodiment, according to the above embodiment, when the movers 13 are respectively disposed on both sides of the first stator 11, that is, when the first stator 11 includes the third large tooth 113, if the magnetic fields formed in the air gap by the first mover permanent magnets on the movers 13 on both sides are opposite, the mover small teeth on both sides of the movers are respectively staggered by half pitch (linear motor) or pole pitch (rotary motor); if the magnetic field directions formed by the first mover permanent magnets on the two sides in the air gap are the same, the mover small teeth on the movers 13 on the two sides are aligned.

In one embodiment, as shown in fig. 5 or 6, when the stator assemblies (e.g., the first stator 11 and the second stator 12, respectively, as shown in fig. 5; or the second stator 12, respectively, as shown in fig. 12A) are respectively disposed at two sides of the mover 13, the mover 13 may include a plurality of mover magnetic conductive portions 132 disposed at intervals along the moving direction of the mover; a second mover permanent magnet is disposed between two adjacent mover magnetic conductive portions 132.

For convenience of understanding, the following description will take the first stator and the second stator respectively corresponding to the two sides of the mover as an example. The mover 13 includes a plurality of mover magnetic conductive portions 132 and a second mover permanent magnet (e.g., a fifth permanent magnet M5) disposed at intervals in a moving direction of the mover 13.

Further, as shown in fig. 6, in an embodiment, taking a fifth permanent magnet M5 as an example, the Halbach array permanent magnet may include: a middle permanent magnet M51 located in the middle, and a lower permanent magnet M52 corresponding to the first stator 11 and an upper permanent magnet M53 corresponding to the second stator 12 located at both sides of the middle permanent magnet.

Other relevant descriptions about the fifth permanent magnet are found in the first permanent magnet and the second permanent magnet, and are not repeated herein.

Further, in one embodiment, the second rotor permanent magnet and the first stator permanent magnet are correspondingly arranged on the first stator; the second stator permanent magnet is correspondingly arranged on the second stator; and/or the magnetic field directions formed in the air gap by the third stator permanent magnets correspondingly arranged on the second stator are the same.

Continuing with fig. 6, based on the above embodiment, the directions of the magnetic fields formed in the air gap by the fifth permanent magnet M5, the first permanent magnet M1, and the second permanent magnet M2 are the same.

The mover adopting the structure reduces the usage of the yoke part, so the volume and the weight of the mover can be reduced, and the volume and the weight of the motor are further reduced.

As shown in fig. 16, in an embodiment, at least one end (one end or both ends) or any position in the middle of each mover magnetic conductive portion 132 may be integrally connected through a mover connecting portion 133, or may be integrally prefabricated, and a permanent magnet (for example, a fifth permanent magnet M5) may be embedded in the middle of each mover magnetic conductive portion 132, so that the plurality of mover magnetic conductive portions 132 are integrally arranged in order, and the number of steps for subsequently splicing the single magnetic conductive portion is reduced.

As shown in fig. 17A or 17B, further, in an embodiment, according to the above embodiment, when the movers 13 are respectively disposed on both sides of the first stator 11, that is, when the first stator 11 includes the third large tooth 113, as shown in fig. 17A, if the magnetic field directions formed in the air gap by the mover permanent magnets on the movers on both sides are opposite, the mover magnetic conductive parts 132 on the movers on both sides are respectively staggered by half of the magnetic conductive part distance or the pole distance d; as shown in fig. 17B, when the mover permanent magnets located on both sides form the same magnetic field direction in the air gap, the mover magnetic conductive portions 132 of the movers 13 on both sides are aligned.

As shown in fig. 18A-18C, in one embodiment, the mover 13 may include surface-mounted permanent magnets (e.g., an eighth permanent magnet M8), where the surface-mounted permanent magnets are arranged in sequence along the moving direction of the mover, and the directions of the magnetic fields formed by two adjacent permanent magnets in the air gap are opposite to each other to form a pair of poles, such as: when the number of the surface-mounted permanent magnets is 32, the number of the pole pairs of the mover is 16. Specifically, the magnetic conductive ring may be disposed in the middle, and each surface-mounted permanent magnet may be sequentially attached to both ends of the magnetic conductive ring, or the magnetic conductive ring may be disposed at least one end, and each surface-mounted permanent magnet may be attached to one end of the magnetic conductive ring, or the like, so that each surface-mounted permanent magnet is fixed in position.

As shown in fig. 18D, in one embodiment, the mover 13 includes a plurality of spoke-shaped mover magnetic conductive portions 135 arranged in sequence according to the moving direction of the mover, and a fifth mover permanent magnet (for example, a ninth permanent magnet M9) embedded between two adjacent spoke-shaped mover magnetic conductive portions 135. In one embodiment, the ninth permanent magnet M9 may be embedded in the gap between the spoke-like rotor magnetic conductive portions 135, such as by integrally prefabricating the spoke-like rotor magnetic conductive portions 135, or by fixedly connecting at least one end or any middle position thereof to form a whole via a rotor connecting portion. It should be noted that the magnetic field directions of every two adjacent ninth permanent magnets M9 are opposite in polarity along the moving direction of the mover, and every two adjacent ninth permanent magnets M9 form a pair of poles.

In one embodiment, the magnetic fields of two adjacent ninth permanent magnets M9 have opposite polarities in the moving direction of the mover (specifically, see the magnetic field direction of the sixth permanent magnet M6 or the seventh permanent magnet M7 in fig. 22D), and further, in one embodiment, the magnetic field directions formed in the air gap by the position-aligned portions of the first stator 11 and the second stator 12 on both sides of the mover 13 are the same, such as: as shown in fig. 18D, the first permanent magnet M1 on the first stator 11 and the second permanent magnet M2 on the second stator 12, which is aligned in the radial direction position of the rotary electric machine, form magnetic fields in the air gap in the same direction, and are staggered from each other by half a pitch or pole pitch; further, in another embodiment, the position-aligned portions of the first and second stators 11 and 12 located at both sides of the mover 13 form opposite magnetic fields in the air gap (the drawings are omitted). It should be noted that, when the motor includes a plurality of second stators 12, the above description may also be applied to the second stators 12 respectively disposed on both sides.

The number N of the first large tooth, the second large tooth, the third large tooth, the fourth large tooth, and the like may be arbitrarily designed as necessary.

In a preferred embodiment, 3 ≦ N ≦ 9;

as shown in fig. 10 or 11, taking the first large tooth as an example for further description, the amount of the windings used is reduced by reducing the number of the first large teeth 112, so that copper loss can be saved; in addition, the width of the first large teeth 112 may be increased, and thus the height of the first large teeth 112 may be decreased, so that the thickness of the first stator yoke portion 111 may be increased, thereby improving the mechanical strength of the first stator yoke portion 111.

Further, it should be noted that, when the rotating electrical machine is provided with a single-side stator, the motor generates a large eccentric force in the rotating process due to the reduction of the number of the first large teeth 112, and when the double-side stator structure is adopted, the forces generated at both sides can be offset, so that the fluctuation generated in the rotating process of the motor can be reduced.

As shown in fig. 19A, 19B, 20A, 20B, or 21, in one embodiment, an electric machine 10 is also provided.

Specifically, the motor 10 may be any type of motor that has been developed now or in the future, such as: the dividing in the relative movement manner of the stator and the first mover of the motor may include: a rotary motor (as shown in fig. 19A or 20A) or a linear motor (as shown in fig. 21); taking the magnetic flux profile of the rotating electrical machine as an example, an axial flux rotating electrical machine (as shown in fig. 20A), a radial flux rotating electrical machine (as shown in fig. 19A), an axial-radial mixed flux rotating electrical machine (the drawings are omitted), or the like may be included.

Specifically, the motor may be a motor that converts electric energy into kinetic energy and outputs the kinetic energy, or may be a generator that converts kinetic energy into electric energy and outputs the electric energy. The two can be realized by adopting the same structure in some cases, and the functions of the generator or the motor are realized by adopting different electric connection and mechanical connection modes for the same structure. For convenience of understanding, the present embodiment will be described in further detail below by taking the motor as an example.

The motor 10 includes: the stator assembly and the rotor assembly;

the stator assembly comprises at least a first stator 11; the rotor assembly comprises at least two rotors;

the stators in the stator assembly and the movers in the mover assembly are oppositely arranged at intervals, and an air gap exists between the adjacent stators and the movers; wherein, at least two movers are respectively arranged at two sides of the first stator 11.

The stator assembly at least comprises the first stator, and the stator assembly only comprises the first stator or comprises the first stator and a second stator except the first stator; the mover assembly comprises at least two movers means that the mover assembly may comprise only two movers or any number of movers above two.

It should be noted that the stator in the stator assembly and the mover in the mover assembly may be arranged in a manner that each stator and each mover are arranged in a spaced manner, or may be arranged in a manner that a part of the stators and the movers are arranged in a spaced manner, for example: two first rotors are correspondingly arranged on one side of the first rotor in parallel. Preferably, each stator and each mover are oppositely disposed with a space therebetween.

Each stator in the stator assembly has the same pole pair number; each rotor in the rotor assembly has the same pole pair number;

the first stator 11 is provided with a first winding 14.

Continuing with fig. 19A, 19B, 20A, 20B, or 21, to facilitate understanding, the present embodiment includes a stator assembly including a first stator 11; the mover assembly includes a first mover 13 'and a second mover 13 ″, and the first mover 13' and the second mover 13 ″ are respectively disposed at both sides of the first stator 11 for further detailed description.

It should be noted that, the pole pair number of the stator +/-the pole pair number of the winding is equal to the pole pair number of the mover; when the number of pole pairs of the stator is fixed, the number of pole pairs of each rotor can be correspondingly known according to the number of pole pairs of the windings, and if only one set of windings is arranged on one motor, the number of pole pairs of the windings is fixed, so that the number of pole pairs of each rotor is also fixed and the same; or when the motor comprises a second stator except the first stator, when the second stator is provided with a second winding, because the number of pole pairs of each stator is the same, when the number of pole pairs of the second winding is the same as that of the first winding, the number of pole pairs of each rotor is also the same. In addition, when the motor 10 includes only one first stator 11 or one second stator, and the movers are respectively disposed on both sides of the first stator 11 or the second stator, the above-mentioned each stator having the same number of pole pairs also means that the first stator 11 or the second stator 12 has the same number of pole pairs corresponding to both ends of the first mover 13' and the second mover 13 ″ respectively.

The two sides of the stator are respectively provided with the rotor, and each stator and each rotor have the same pole pair number, so that each stator and each rotor have the same frequency, and the plurality of rotors can be driven to move by at least one stator.

In addition, the limitation of magnetic flux saturation of a single rotor is overcome by arranging the multilayer rotors, and the maximum output of the motor can be improved.

In addition, through the active cell effect of first stator with both sides simultaneously, can reduce the unbalanced force of motor like this, and make the number of teeth of the big tooth of first stator or the groove number between the big tooth adopt odd number or even number as required, can improve the flexibility of tooth's socket ratio like this, for example: taking a three-phase motor as an example, 3 slots, 9 slots and 15 slots can be adopted, while only 6 slots, 12 slots and 18 slots can be adopted originally, different slot numbers can influence the copper loss, the maximum output and the like of the motor, and as the flexibility of the tooth space ratio is improved, more flexibility can be provided for the motor design, so that the better motor can be designed by starting from the factors of the copper loss, the maximum output and the like.

In addition, compared with the motor comprising the first stator and the at least one second stator structure described in the above embodiments, the motor comprising at least two mover structures of the present embodiment may increase the yoke structure with higher rigidity on the mover, or increase the volume of other rigid structures of the mover itself, so that the mechanical strength of the mover is higher, and the stability of the motor is better.

Specifically, in order to make each stator have the same number of pole pairs, the same number of teeth may be formed on the surface of each stator corresponding to the mover, such as: the surface of each stator corresponding to the rotor forms the same number of small stator teeth; or each stator corresponds to the rotor to form large teeth and/or hidden teeth with the same number, and further, in one embodiment, each large tooth or hidden tooth is provided with small stator teeth with the same number; or the same number of individual stator units (which may be considered as teeth), etc.; in one embodiment, the same number of permanent magnets may be used, and the present embodiment is not limited.

Specifically, in order to make the number of pole pairs of each mover the same, the number of small teeth formed on the surface of the stator corresponding to each mover may be the same, or the number of permanent magnets arranged on each mover or on the surface of the stator corresponding to each mover may be the same.

For convenience of understanding, the structure of each mover is exemplified below based on the first stator 11:

it should be noted that, in addition to the first stator 11, when the motor includes a second stator, the structure of the mover in each of the following embodiments may also be based on the second stator 12, and the first stator 11 and all the second stators 12 may be collectively referred to as a stator; the first stator permanent magnet arranged on the first stator, and/or other permanent magnets arranged on stators such as the second stator permanent magnet, the third stator permanent magnet and/or the fourth permanent magnet arranged on the second stator, etc. are collectively referred to as stator permanent magnets.

As shown in fig. 22A, in one embodiment, the first mover 13 ' includes a first mover yoke 134 ', a plurality of third mover small teeth 1341 ' are formed on a surface of the first mover yoke 134 ' corresponding to the first stator 11, and a third mover small slot is formed between adjacent two third mover small teeth 1341 '; the second mover 13 "includes a second mover yoke 134", a plurality of fourth mover small teeth 1341 "are formed on a surface of the second mover yoke 134" corresponding to the first mover 11, and a fourth mover small groove is formed between two adjacent fourth mover small teeth 1341 ".

Specifically, in order to make the first mover 13 'and the second mover 13 ″ have the same number of pole pairs, the number of the third mover small teeth 1341' and the fourth mover small teeth 1341 ″ may be made the same.

Further, in one embodiment, a third mover permanent magnet is disposed in at least a portion of the third mover small slot and/or a fourth mover permanent magnet is disposed in at least a portion of the fourth mover small slot.

Further, in one embodiment, the magnetic field direction formed by each of the third mover permanent magnets in the air gap L is the same; each fourth mover permanent magnet forms the same magnetic field direction in the air gap L. Continuing with fig. 22A, for convenience of understanding, taking the third mover permanent magnet as the sixth permanent magnet M6 and the fourth mover permanent magnet as the seventh permanent magnet M7 as an example for further details, the magnetic field direction formed by each sixth permanent magnet M6 in the air gap is the same, and the magnetic field direction formed by each seventh permanent magnet M7 in the air gap L is the same; in addition, the direction of the magnetic field formed by the sixth permanent magnet M6 in the air gap L may be the same as or opposite to the direction of the magnetic field formed by the seventh permanent magnet M7 in the air gap L (as shown in fig. 23A) or fig. 23B.

As further shown in fig. 22A, in one embodiment, the first stator includes a first surface corresponding to the first mover and a second surface corresponding to the second mover, and the first surface and the second surface respectively form a first stator small tooth 1211 corresponding to the first mover 13' and the second mover 13 ″. If the first permanent magnet M1 is arranged in at least part of the first stator small teeth 1211 of the first face, the magnetic field formed by the first permanent magnet M1 and the sixth permanent magnet M6 on the first face in the air gap L is in the same direction; and/or if the first permanent magnet M1 is arranged in at least part of the first stator small teeth 1211 of the second face, the direction of the magnetic field formed in the air gap L by the first permanent magnet M1 and the seventh permanent magnet M7 on the second face is the same.

As shown in fig. 23B, further, in one embodiment, if the magnetic field directions formed in the air gap by the sixth permanent magnet M6 and the seventh permanent magnet M7 are opposite, the first mover magnetic conductive part 134 'on the first mover 13' and the second mover magnetic conductive part 134 "on the second mover 13" are respectively staggered by half a pitch (linear motor) or a half a pole pitch d (rotary motor); further, as shown in fig. 23A, in one embodiment, if the magnetic field directions formed in the air gap by the sixth permanent magnet M6 and the seventh permanent magnet M7 are the same, the positions of the first mover magnetic conductive part 134' and the second mover magnetic conductive part 134 ″ are aligned.

As shown in fig. 22B and 22C, in another embodiment, a third mover permanent magnet may be directly attached to a surface of the first mover 13' corresponding to the first stator 11, and a fourth mover permanent magnet may be directly attached to a surface of the second mover 13 ″ corresponding to the first stator; the third mover permanent magnets and the fourth mover permanent magnets are equal in number, so that the number of pole pairs of the third mover and the fourth mover is equal. Specifically, the directions of magnetic fields formed by every two adjacent third mover permanent magnets in the air gap L are opposite, so that every two adjacent third mover permanent magnets form a pair of poles; and the directions of magnetic fields formed by every two adjacent fourth mover permanent magnets in the air gap L are opposite, so that every two adjacent fourth mover permanent magnets form a pair of poles. For convenience of understanding, the third mover permanent magnet is hereinafter referred to as a sixth permanent magnet M6; the fourth mover permanent magnet is exemplified by a seventh permanent magnet M7.

As shown in fig. 22B, further, in an embodiment, the first stator 11 includes a first surface corresponding to the first mover 13 'and a second surface corresponding to the second mover 13 ″, and when the first stator permanent magnet M1 disposed on the first surface of the first stator 11 and the first stator permanent magnet M1 disposed on the second surface of the first stator form the same magnetic field direction in the air gap L, the sixth permanent magnet M6 of the first mover 13' and the seventh permanent magnet M7 of the second mover 13 ″, which are aligned in position, form the same magnetic field direction in the air gap L; if the first stator permanent magnet M1 disposed on the first surface of the first stator 11 and the first stator permanent magnet M1 disposed on the second surface form a magnetic field in the air gap L in the opposite direction, the sixth permanent magnet M6 and the seventh permanent magnet M7 aligned with each other form a magnetic field in the opposite direction in the air gap L (the drawings are omitted).

It should be noted that the third mover permanent magnet and the fourth mover permanent magnet described in the above embodiments may be one permanent magnet (as shown in fig. 22B), a plurality of permanent magnets, or an array formed by a plurality of permanent magnets, such as: halbach array (as shown in figure 22C). Further, in an embodiment, as shown in fig. 22C, when the sixth permanent magnet M6 and the seventh permanent magnet M7 are Halbach array permanent magnets directly attached to the surface of the mover, an auxiliary permanent magnet part may be shared between two adjacent sixth permanent magnets M6 to enhance the air gap flux density. For example, the Halbach array permanent magnet M6 may include a main permanent magnet in the middle and auxiliary permanent magnets on both sides of the main permanent magnet, and the auxiliary permanent magnet part may be shared between two adjacent Halbach array permanent magnets M6.

As shown in fig. 22D, in another embodiment, the first mover 13 ' includes a plurality of first spoke-shaped magnetic conductive portions 135 ' arranged in sequence along the mover moving direction and a third mover permanent magnet embedded between two adjacent first spoke-shaped magnetic conductive portions 135 ', and the second mover 13 ″ includes a plurality of second spoke-shaped magnetic conductive portions 135 ″ arranged in sequence along the mover moving direction and a fourth mover permanent magnet embedded between two adjacent second spoke-shaped magnetic conductive portions 135 ″. The third mover permanent magnets and the fourth mover permanent magnets are equal in number, so that the number of pole pairs of the third mover and the fourth mover is equal. It should be noted that the magnetic field directions of every two adjacent third mover permanent magnets are opposite in polarity along the moving direction of the mover, and every two adjacent third mover permanent magnets form a pair of poles; the magnetic field directions of every two adjacent fourth mover permanent magnets are opposite in polarity along the moving direction of the mover, and every two adjacent fourth mover permanent magnets form a pair of poles.

Further, in one embodiment, at least one end or any middle position of the first spoke-shaped magnetic conduction part 135 'and the second spoke-shaped magnetic conduction part 135 ″ may be respectively connected to each other through the rotor connection part, or respectively prefabricated into a whole, so that the motor is integrally arranged, and the steps of subsequently splicing the single spoke-shaped rotor magnetic conduction parts 135', 135 ″ are reduced.

As shown in fig. 22D, further, in an embodiment, the first stator 11 includes a first surface corresponding to the first mover 13' and a second surface corresponding to the second mover 13 ″, and if the first stator permanent magnet M1 disposed on the first surface has the same polarity as the first stator permanent magnet M1 disposed on the second surface, the direction of the magnetic field of the sixth permanent magnet M6 is opposite to that of the seventh permanent magnet M7 aligned; if the direction of the magnetic field of the first stator permanent magnet M1 disposed on the first surface is opposite to that of the first stator permanent magnet M1 disposed on the second surface, the polarities of the magnetic fields of the sixth permanent magnet M6 and the seventh permanent magnet M7 aligned with each other are the same (the drawings are omitted).

In another embodiment, referring to the motor shown in fig. 12A, when the motor further includes a second stator 12 in addition to the first stator 11, two sides of at least one of the movers 13 in the mover assembly are made to correspond to the first stator 11 and the second stator 12, respectively (besides, when the motor includes a plurality of second stators, it may also be referred to that two sides of one of the movers correspond to the second stators, respectively). Referring to the partially enlarged structure of the motor shown in fig. 6, further, in an embodiment, the mover 13 includes a plurality of mover magnetic conductive portions 132 disposed at intervals along a moving direction of the mover 13, and a second mover permanent magnet is disposed between two adjacent mover magnetic conductive portions 132. (e.g., a fifth permanent magnet M5).

It should be noted that the fifth permanent magnet M5 may be a permanent magnet, a plurality of permanent magnets, or an array formed by a plurality of permanent magnets, for example: halbach array. With continued reference to the enlarged partial structure of the motor shown in fig. 6, further, in an embodiment, taking the fifth permanent magnet M5 as a Halbach array permanent magnet as an example, the Halbach array permanent magnet may include: a middle permanent magnet M51 located in the middle, and a lower permanent magnet M52 corresponding to the first stator 11 and an upper permanent magnet M53 corresponding to the second stator 12 located at both sides of the middle permanent magnet.

Further, in an embodiment, the second mover permanent magnet is the same as the first stator permanent magnet correspondingly disposed on the first stator, and the direction of the magnetic field formed in the air gap by the second stator permanent magnet correspondingly disposed on the second stator and/or the third stator permanent magnet correspondingly disposed on the second stator is the same. Continuing with the enlarged partial structure of the electric machine shown in fig. 6, illustratively, the fifth permanent magnet M5 is oriented in the same direction as the magnetic field formed in the air gap by the first permanent magnet M1 and the second permanent magnet M2.

The mover adopting the structure reduces the usage of the yoke part, so the volume and the weight of the mover can be reduced, and the volume and the weight of the motor are further reduced.

Referring to the partially enlarged structure of the mover shown in fig. 16, further, in an embodiment, at least one end or any middle position of each mover magnetic conductive portion 132 may be integrally connected or integrally prefabricated by a mover connecting portion 133, so that the plurality of mover magnetic conductive portions 132 are integrally arranged in order, the number of steps of subsequently splicing the single magnetic conductive portion is reduced, and the stability of the mover is enhanced.

In the embodiments of the above-described movers, various movers having different structures can be combined in the same motor, as long as the number of pole pairs of each mover is the same.

For ease of understanding, the structure of the stator assembly is illustrated below:

as further shown in fig. 19A, 19B, 20A, 20B or 21, in one embodiment, the first stator 11 includes N third large teeth 113 formed to extend in the direction of the movers 13 on both sides, respectively, where N ≧ 3. In addition, if the motor is smaller than three phases, the number of the third large teeth may be smaller than 3.

It should be noted that the N third large teeth 113 may be provided separately and independently from each other (as shown in fig. 19B, 20B, and 21), or may be integrally connected to each other by a stator yoke (the drawings are omitted); preferably, the N third large teeth are arranged separately and independently from each other; or the independent third large teeth are connected into a whole through the non-magnetic conduction part (the attached drawing is omitted), namely the two adjacent independent third large teeth are fixedly connected together through the non-magnetic conduction part, no magnetic line of force passes through the non-magnetic conduction part between the two adjacent third large teeth, and the stator assembly of the motor can be prevented from being dislocated or loosened in the moving process through the non-magnetic conduction part. Specifically, the non-magnetic conductive portion may be made of any material that is not magnetically conductive.

As shown in fig. 22A-22D, further, in an embodiment, the third large tooth 113 includes a first surface corresponding to the first mover 13' and a second surface corresponding to the second mover 13 ″, where the first surface and the second surface respectively form n first stator small teeth, where n ≧ 2, i.e., n is an integer greater than or equal to 2, and a first stator small slot is formed between two adjacent first stator small teeth 1121. It should be noted that the number of the first stator small teeth formed on the first surface is the same as that of the first stator small teeth formed on the second surface, so that the first surface and the second surface of the first stator 11 have the same number of pole pairs.

As further shown in fig. 22A-22D, in one embodiment, a first stator permanent magnet (e.g., first permanent magnet M1) is disposed in at least a portion of the first stator slot of the first and/or second faces.

It should be noted that the first permanent magnet M1 may be a permanent magnet, a plurality of permanent magnets, or an array formed by a plurality of permanent magnets, such as: halbach arrays (as shown in fig. 22A-22D), etc., and the present embodiment is not limited.

In one embodiment, as shown with reference to the electric machine shown in fig. 12A-12D of the previous embodiment, the stator assembly further includes at least one second stator 12, the structure of the second stator 12 being exemplified below:

in one embodiment, the second stator 12 includes a second stator yoke portion 121 and N hidden teeth 123 formed on a face of the second stator yoke portion 121 corresponding to the mover 13.

The hidden teeth may be provided on one side of the second stator (when one side corresponds to the mover), or may be provided on both sides of the second stator (when both sides correspond to the mover).

Further, in one embodiment, n second stator small teeth are formed on each hidden tooth; and a second stator small slot is formed between every two adjacent second stator small teeth.

Further, in one embodiment, a second stator permanent magnet is arranged in at least part of the second stator small slot; and the magnetic field directions formed by the second stator permanent magnets corresponding to the same rotor on the same second stator in the air gap are the same.

In another embodiment, referring to the motor shown in FIG. 12A, 12D or 12F of the previous embodiment, when the movers 13 are respectively disposed at both sides of the second stator 12, the second stator 12 includes N independent stator units 124 sequentially arranged along the moving direction of the movers 13, wherein N ≧ 3. It should be noted that the independent stator units 124 may mean that the stator units 124 are disposed at a certain distance from each other (as shown in fig. 12A, 12D or 12F); or the individual stator units 124 may be integrally connected by a non-magnetic conductive portion (the drawings are omitted).

Further, in one embodiment, referring to the motor shown in fig. 12E of the previous embodiment, each stator unit 124 includes n stator magnetic conductive portions 1241 sequentially arranged at intervals along the moving direction of the mover, and a third stator permanent magnet is disposed between the n stator magnetic conductive portions 1241, where n ≧ 2;

further, in one embodiment, when the movers 13 respectively disposed at both sides of the second stator 12 are respectively disposed with the first mover permanent magnet and/or the second mover permanent magnet corresponding to the second stator 12; the third stator permanent magnet and the first rotor permanent magnet and/or the second rotor permanent magnet form the same magnetic field direction in the air gap.

Further, in one embodiment, at least one end or any middle position of the n stator magnetic conduction parts of each stator unit is connected into a whole through the stator connecting part or is prefabricated into a whole, so that the plurality of stator magnetic conduction parts are integrally arranged in order, the step of splicing the single stator magnetic conduction part subsequently is reduced, and the mechanical strength of the motor is enhanced.

By adopting the second stator with the structure, the usage of the yoke part is reduced, so that the volume and the weight of the second stator can be reduced, and the volume and the weight of the motor are further reduced.

In another embodiment, referring to the second stator 12 portion of the motor shown in fig. 7 and 8 in the previous embodiments, the second stator 12 may include a second stator yoke 121 and N second large teeth 122 formed by the second stator yoke 121 extending toward the mover 13; further, in one embodiment, the second large tooth 122 is provided with a second winding 17. It should be noted that the second winding 17 has the same number of pole pairs as the first winding 14, so that the number of pole pairs of each stator is the same, and the number of pole pairs of each mover is also the same.

Further, in one embodiment, each of the second large teeth 122 forms n second stator small teeth 1211 corresponding to the face of the mover 13; a second stator small slot is formed between two adjacent second stator small teeth 1211.

Further, in one embodiment, a second stator permanent magnet is arranged in at least part of the second stator small slot; and the magnetic field directions formed by the second stator permanent magnets of the corresponding rotor on the same stator in the air gap are the same.

In another embodiment, referring to the second stator 12 in the motor shown in fig. 9 in the previous embodiment, when the movers 13 are respectively disposed at two sides of the second stator 12, the second stator 12 may also include N fourth large teeth 114 respectively extending to the mover direction at two sides of the second stator; further, in one embodiment, a second winding 17 may be disposed on the fourth large tooth 114.

Further, in one embodiment, a plurality of second stator small teeth 1211 are respectively formed on both sides of each fourth large tooth 114 corresponding to the surface of the mover 13; a second stator small slot is formed between two adjacent second stator small teeth 1211.

Further, in one embodiment, a second stator permanent magnet is arranged in at least part of the second stator small slot; and the magnetic field directions formed by the second stator permanent magnets corresponding to the same rotor on the same stator in the air gap are the same.

In another embodiment, referring to the second stator 12 portion of the motor shown in fig. 18B and 18C in the previous embodiments, as shown in fig. 18B, in one embodiment, the second stator 12 includes a second stator yoke and a fourth stator permanent magnet (e.g., a tenth permanent magnet M10) attached to a face of the second stator yoke corresponding to the mover, the attached tenth permanent magnet M10 may form a plurality of independent units corresponding to the first big tooth or the third big tooth of the first stator, etc., such as: as shown in fig. 18B, the plurality of first large teeth 112 corresponding to the first stator 11 form a plurality of independent units, and in a preferred embodiment, the direction of the magnetic field formed by the fourth stator permanent magnet of each unit in the air gap is the same as the direction of the magnetic field formed by the first stator or other second stators (if a plurality of second stators are present) in the air gap, which are aligned, so as to form a larger output; or as shown in fig. 18C, the tenth permanent magnets M10 are arranged in series in order, etc., as long as the first stator 11 and the second stator 12 are ensured to have the same number of pole pairs. It should be noted that, the directions of the magnetic fields formed in the air gap by two adjacent permanent magnets M10 are opposite, so that two adjacent permanent magnets form a pair of poles, and each of the first small stator teeth 1121 at the end of the first large tooth 112 or the third large tooth 113 and the first small slot or the first permanent magnet M1 located in the first small slot form a pair of poles, and based on this principle, the number of the tenth permanent magnets M10 is adjusted according to the pole pair number of the first stator 11, so that the first stator 11 and the second stator 12 have the same pole pair, or a plurality of second stators have the same pole pair.

For other relevant descriptions of the second stator, reference is made to the above embodiments, and the description is not repeated here.

In one embodiment, more than two second stators 12 and/or more than three movers 13 may also be provided. Such as: as shown in fig. 12C or 12G, the motor includes two movers 13 and two second stators 12; as shown in fig. 12B, the motor includes one second stator 12 and two movers 13; as shown in fig. 12A, 12D, 12F, 14A, or 14B, the motor includes three second stators 12 and three movers 13. By arranging more layers of stators and/or movers, the magnetic flux saturation limit of a single stator and/or mover is overcome, and the maximum output of the motor can be further improved.

In addition, besides the structures of the first stator, the second stator and the mover listed in the embodiment, the motor may also include a stator and a mover in the same, similar or other structural forms, as long as the stators and the movers in the motor are ensured to have the same number of pole pairs, which belongs to the protection scope of the present invention.

For other relevant descriptions of the motor of this embodiment, reference may be made to the relevant descriptions of the above other motor embodiments, and no repeated description is provided here.

In one embodiment, the embodiment of the present invention further provides an apparatus (the drawings are omitted), which includes the motor described in the above embodiment.

In some preferred embodiments, the device may be an automated device or a semi-automated device.

It should be noted that the automated or semi-automated device may be applied to various fields, such as: industrial, educational, nursing, entertainment, or medical, among others.

In some preferred embodiments, a robot (e.g., a robotic arm or a humanoid robot) can be considered to be an advanced automation device.

In some embodiments, the automobile may also be considered an automation device.

In some embodiments, the device may also be a power generation device.

For the related description of the motor, reference is made to the above embodiments, and the description is not repeated here.

When an element is referred to as being "disposed on" another element, it can be secured to the other element or movably coupled to the other element. When an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "longitudinal," "lateral," "left," "right," "inner," "outer," and the like as used herein are for descriptive purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The term "and/or" herein is merely an association relationship describing an associated object, and means that three relationships may exist, for example: a and/or B may mean that A is present alone, A and B are present simultaneously, and B is present alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

The terms "first," "second," "third," and the like in the description and in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and any variations thereof, are intended to cover non-exclusive inclusions. For example: a product or device that comprises a list of structures or modules, etc., is not necessarily limited to those structures or modules explicitly listed, but may include other structures or modules not explicitly listed or inherent to such product or device.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.

It should be noted that the embodiments described in the specification are preferred embodiments, and the structures and modules involved are not necessarily essential to the invention, as will be understood by those skilled in the art.

The motor and the device including the motor provided by the embodiment of the present invention are described in detail above, but the above description of the embodiment is only for helping understanding the method and the core idea of the present invention, and should not be construed as limiting the present invention. Those skilled in the art should also appreciate that various modifications and substitutions can be made without departing from the scope of the present invention.

Claims (19)

1. An electric machine, comprising a stator assembly and a mover assembly; the stator assembly comprises a first stator and at least one second stator; the mover assembly includes at least one mover;

the stators in the stator assembly and the movers in the mover assembly are oppositely arranged at intervals, and an air gap exists between the adjacent stators and the movers;

each stator of the stator assembly has the same pole pair number;

a first winding is arranged on the first stator.

2. The motor of claim 1, wherein when the first stator is provided at one side thereof with the mover;

the first stator comprises a first stator yoke and N first large teeth formed by extending the first stator yoke to the rotor, wherein N is more than or equal to 3; or

When the two sides of the first stator are respectively provided with the rotor;

the first stator comprises N third large teeth which extend towards the directions of the rotors on the two sides respectively, wherein N is more than or equal to 3.

3. The electric machine of claim 2, wherein the second stator comprises a structure to have the same number of pole pairs as the first stator;

the second stator comprises a second stator yoke and N hidden teeth formed on the second stator yoke corresponding to the surface of the rotor assembly; and/or

The second stator comprises a second stator yoke and N second large teeth formed by extending the second stator yoke towards the direction of the mover arranged at one side, and second windings are arranged on the second large teeth; and/or

The second stator comprises N fourth large teeth which are formed by extending towards the rotor arranged on two sides respectively, and second windings are arranged on the fourth large teeth; and/or

The second stator comprises a second stator yoke part, fourth stator permanent magnets are attached to the surface, corresponding to the rotor, of the second stator yoke part, and the directions of magnetic fields formed in the air gap by the two adjacent fourth stator permanent magnets are opposite to each other so as to form a pair of poles.

4. The motor of claim 3, wherein each of said first large teeth forms n first stator small teeth corresponding to a face of said first mover; a first stator small groove is formed between every two adjacent first stator small teeth, wherein n is more than or equal to 2;

when the second stator comprises the non-salient teeth, the second big teeth and/or the fourth big teeth; n second small stator teeth are formed on each hidden tooth, the second large tooth and/or the fourth large tooth; and a second small stator slot is formed between every two adjacent small stator teeth.

5. The motor of claim 4, wherein at least a portion of the first stator slots have first stator permanent magnets disposed therein; the magnetic field directions formed by the first stator permanent magnets corresponding to the same rotor in the air gap are the same; and/or

Second stator permanent magnets are arranged in at least part of the second stator small slots; and the magnetic field directions of the second stator permanent magnets which are positioned on the same second stator and correspond to the same mover in the air gap are the same.

6. The motor of claim 2, wherein when the movers are respectively provided at both sides of the second stator, the second stator comprises a structure to have the same number of pole pairs as the first stator;

the second stator comprises N independent stator units which are sequentially arranged along the motion direction of the rotor;

each stator unit comprises n stator magnetic conduction parts which are sequentially arranged at intervals along the moving direction of the rotor, wherein n is more than or equal to 2;

and a third stator permanent magnet is arranged between every two adjacent stator magnetic conduction parts.

7. The motor according to claim 6, wherein the movers respectively disposed at both sides of the second stator are respectively provided with a first mover permanent magnet and/or a second mover permanent magnet corresponding to the second stator;

the third stator permanent magnet and the first rotor permanent magnet and/or the second rotor permanent magnet form the same magnetic field direction in the air gap.

8. The electric machine of any of claims 1-7, wherein the mover comprises a mover yoke; a plurality of mover small teeth are formed on the surface of the mover yoke part corresponding to the stator component, and a mover small groove is formed between every two adjacent mover small teeth; and/or

When two sides of the rotor are respectively provided with at least one stator in the stator assemblies; the rotor comprises a plurality of rotor magnetic conduction parts which are arranged at intervals along the motion direction of the rotor; a second rotor permanent magnet is arranged between two adjacent rotor magnetic conduction parts; and/or

The rotor comprises surface-mounted permanent magnets which are sequentially arranged along the motion direction of the rotor; the magnetic field directions formed by the two adjacent surface-mounted permanent magnets in the air gap are opposite to each other so as to form a pair of poles; and/or

The rotor comprises a plurality of spoke-shaped magnetic conduction parts and a fifth rotor permanent magnet embedded between two adjacent spoke-shaped magnetic conduction parts; the magnetic fields of two adjacent fifth rotor permanent magnets are opposite in polarity along the motion direction of the rotor to form a pair of poles.

9. The motor of claim 8, wherein when said mover small teeth form a mover small slot therebetween; a first rotor permanent magnet is arranged in at least part of the rotor small grooves;

the first rotor permanent magnet and the first stator permanent magnet correspondingly arranged on the first stator, the second stator permanent magnet correspondingly arranged on the second stator and/or the third stator permanent magnet correspondingly arranged on the second stator are in the same magnetic field direction formed in the air gap.

10. The motor of claim 9, wherein when said rotors are respectively disposed on two sides of said first stator, if the magnetic field formed by said first rotor permanent magnets on said rotors on two sides in said air gap is opposite, said rotor small teeth on said rotors on two sides are respectively staggered by half pitch or pole pitch; and if the magnetic field directions formed by the first rotor permanent magnets on the rotors on the two sides in the air gap are the same, the rotor small teeth on the rotors on the two sides are aligned.

11. The motor of claim 8, wherein when said mover is provided with said second mover permanent magnet; the second rotor permanent magnet, the first stator permanent magnet correspondingly arranged on the first stator, the second stator permanent magnet correspondingly arranged on the second stator and/or the third stator permanent magnet correspondingly arranged on the second stator have the same magnetic field direction formed in the air gap.

12. The motor of claim 11, wherein when said rotors are respectively disposed on two sides of said first stator, if the magnetic field directions formed in said air gap by said second rotor permanent magnets on said rotors on two sides are opposite, said rotor magnetic conductive portions on said rotors on two sides are respectively staggered by half magnetic conductive portion distance or pole distance; and if the magnetic field directions formed by the second rotor permanent magnets on the rotors on the two sides in the air gap are the same, the rotor magnetic conduction parts on the rotors on the two sides are aligned.

13. The electric machine of any of claims 1-7, wherein the stator assembly comprises at least two of the second stators; and/or

The mover assembly comprises at least two movers; and/or

Each mover in the mover assembly has the same number of pole pairs.

14. An electric machine, comprising a stator assembly and a mover assembly; the stator assembly comprises at least a first stator; the mover assembly includes at least two movers;

the stators in the stator assembly and the movers in the mover assembly are oppositely arranged at intervals, and an air gap exists between the adjacent stators and the movers; the at least two rotors are respectively arranged on two sides of the first stator;

each stator in the stator assembly has the same pole pair number; each mover in the mover assemblies has the same number of pole pairs;

a first winding is arranged on the first stator.

15. The motor of claim 14, wherein said first stator includes third large teeth extending toward said movers provided at said both sides, respectively; or

The first stator comprises third large teeth which extend towards the rotors arranged on the two sides respectively; the third big teeth comprise first surfaces and second surfaces corresponding to the movers on the two sides; the first surface and the second surface form first stator small teeth respectively; or

The first stator comprises third large teeth which extend towards the rotors arranged on the two sides respectively; the third big teeth comprise first surfaces and second surfaces corresponding to the movers on the two sides; the first surface and the second surface form first stator small teeth respectively; at least part of the first stator small teeth are internally embedded with first stator permanent magnets.

16. The electric machine of claim 14 wherein the stator assembly further comprises at least one second stator; the second stator comprises the following structure:

the second stator comprises a second stator yoke part and hidden teeth formed on the surface of the second stator yoke part corresponding to the rotor assembly; and/or

The second stator comprises a second stator yoke and a second large tooth formed by extending the second stator yoke towards the direction of the mover arranged at one side, and a second winding is arranged on the second large tooth; and/or

When the two sides of the second stator are respectively provided with the rotor, the second stator comprises fourth large teeth which are respectively formed by extending towards the directions of the rotors respectively arranged at the two sides, and second windings are arranged on the fourth large teeth; and/or

When the two sides of the second stator are respectively provided with the rotor, the second stator comprises a plurality of independent stator units which are sequentially arranged along the motion direction of the rotor; each stator unit comprises a plurality of stator magnetic conduction parts which are sequentially arranged at intervals along the moving direction of the rotor; a third stator permanent magnet is arranged between every two adjacent stator magnetic conduction parts; and/or

The second stator comprises a second stator yoke part, second stator permanent magnets are attached to the surface, corresponding to the rotor assembly, of the second stator yoke part, and the directions of magnetic fields formed in the air gap by the two adjacent second stator permanent magnets are opposite to each other so as to form a pair of poles.

17. A machine as claimed in any of claims 14-16, wherein said mover comprises the structure:

the mover includes a mover yoke; a plurality of mover small teeth are formed on the surface of the mover yoke part corresponding to the stator component, and a mover small groove is formed between every two adjacent mover small teeth; and/or

The mover includes a mover yoke; a plurality of mover small teeth are formed on the surface of the mover yoke part corresponding to the stator component, and a mover small groove is formed between every two adjacent mover small teeth; rotor permanent magnets are arranged in at least part of the rotor small grooves; and/or

When the two sides of the rotor are respectively provided with the stators; the rotor comprises a plurality of rotor magnetic conduction parts which are arranged at intervals along the motion direction of the rotor; a second rotor permanent magnet is arranged between two adjacent rotor magnetic conduction parts; and/or

The rotor comprises surface-mounted permanent magnets which are sequentially arranged along the motion direction of the rotor; the magnetic field directions formed by the two adjacent surface-mounted permanent magnets in the air gap are opposite to each other so as to form a pair of poles; and/or

The rotor comprises a plurality of spoke-shaped magnetic conduction parts and a fifth rotor permanent magnet embedded between two adjacent spoke-shaped magnetic conduction parts; the magnetic fields of two adjacent fifth rotor permanent magnets are opposite in polarity along the motion direction of the rotor to form a pair of poles.

18. The electric machine of claim 17, wherein the at least two movers comprise adjacent first and second movers; when the first rotor and the second rotor are respectively positioned at two sides of a certain stator;

when at least part of the mover small slots are internally provided with mover permanent magnets;

if the directions of magnetic fields formed by a third rotor permanent magnet on the first rotor and a fourth rotor permanent magnet on the second rotor in the air gap are opposite, a third rotor small tooth of the first rotor and a fourth rotor small tooth of the second rotor are respectively staggered by half of a tooth pitch or a pole pitch; if the magnetic field directions formed by a third rotor permanent magnet on the first rotor and a fourth rotor permanent magnet on the second rotor in the air gap are the same, a third rotor small tooth of the first rotor is aligned with a fourth rotor small tooth of the second rotor; and/or

When the rotor comprises surface-mounted permanent magnets which are sequentially arranged along the motion direction of the rotor;

if the magnetic field directions formed by the third rotor permanent magnet on the first rotor and the fourth rotor permanent magnet on the second rotor aligned in position in the air gap are opposite, the magnetic field directions formed by the stator permanent magnets arranged on the stator and respectively corresponding to the first rotor and the second rotor in the air gap are opposite; if the magnetic field directions formed by the third rotor permanent magnet and the fourth rotor permanent magnet aligned in position in the air gap are the same, the magnetic field directions formed by the stator permanent magnets arranged on the stator and respectively corresponding to the first rotor and the second rotor in the air gap are the same; and/or

When the rotor comprises a plurality of spoke-shaped magnetic conduction parts and a fifth rotor permanent magnet embedded between two adjacent spoke-shaped magnetic conduction parts;

if the polarities of the magnetic fields of the third rotor permanent magnet on the first rotor and the fourth rotor permanent magnet on the second rotor which are aligned in position are opposite along the moving direction of the rotors, the directions of the magnetic fields formed in the air gaps by the stator permanent magnets which are arranged on the stator and respectively correspond to the first rotor and the second rotor are the same; if the polarities of the magnetic fields of the third rotor permanent magnet and the fourth rotor permanent magnet which are aligned in position are the same along the moving direction of the rotor, the directions of the magnetic fields formed in the air gap by the stator permanent magnets which are arranged on the stator and respectively correspond to the first rotor and the second rotor are opposite.

19. An apparatus comprising an electric machine, characterized in that the apparatus comprises at least one electric machine according to any of claims 1-18.

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