阅读说明：本技术 外转子马蹄铁型绕组永磁电机 (Outer rotor horseshoe-shaped winding permanent magnet motor ) 是由 吴凡 张少文 张华� 汪源 曹宏 石先平 于 2019-09-27 设计创作，主要内容包括：本发明公开了一种外转子马蹄铁型绕组永磁电机,包括定子单元、转子单元和机壳端盖,定子单元与机壳端盖连接,定子单元装入转子单元内,电机轴连接转子单元且电机轴转动连接机壳端盖。优点,本永磁电机通过对定子上绕组的安装结构进行设计,提出了一种复合磁路结构,从而提高永磁电机转矩密度和功率密度实现轻量化,并将定子总成采用真空灌封方案,提高散热效果,具有较高的转矩密度优。(The invention discloses a kind of outer rotor horseshoe-shaped winding permanent magnet motors, including stator unit, rotor unit and shell end cover, stator unit is connect with shell end cover, and stator unit is packed into rotor unit, motor axis connection rotor unit and motor shaft rotation connection shell end cover.Advantage, this magneto is designed by the mounting structure to winding on stator, propose a kind of composite magnetic circuit structure, lightweight is realized to improve magneto torque density and power density, and field frame assembly is used into vacuum encapsulation scheme, heat dissipation effect is improved, torque density with higher is excellent.)

1. a kind of outer rotor horseshoe-shaped winding permanent magnet motor, including stator unit and rotor unit, it is characterised in that: further include Shell end cover (4), stator unit are connect with shell end cover (4), and stator unit is packed into rotor unit, and motor shaft (8) connection turns Subelement and motor shaft (8) rotation connection shell end cover (4)；

The annular stator that stator unit is surrounded by multiple horseshoe-shaped stators (1), the opening court of all horseshoe-shaped stators (1) Outside, horseshoe-shaped stator (1) is by silicon steel sheet stack at winding stator winding (2) is formed on the two legs of horseshoe-shaped stator (1) Horseshoe-shaped stator core, the U-shaped winding one end magnetic field for defining horseshoe-shaped stator core is the pole N, and other end magnetic field is the pole S； Every leg end secured core frame (3) of horseshoe-shaped stator core, two iron cores on each horseshoe-shaped stator core There are gaps between frame (3)；Constitute the two neighboring iron core on each adjacent two horseshoe-shaped stator core of annular stator There are gaps between frame (3), and constitute the pole N and the pole the S alternating of each adjacent two horseshoe-shaped stator core of annular stator Arrangement；

Shell end cover (4) includes connection end cap and assembly sleeve, and assembly sleeve is vertical in the plate face of connection end cap；Assembly set Cylinder is inserted into annular stator, stator unit and shell end cover (4) is poured, and curing molding using epoxide resin vacuum, is made Obtaining stator core, winding and shell end cover (4) becomes an one-piece stator assembly；

Motor shaft (8) plugging in fitting sleeve simultaneously passes through at least one bearing rotation connection assembly sleeve, motor shaft (8) one end protrusion Assemble sleeve；

Rotor unit includes rotor yoke (5) and multiple magnet (6) being pasted on rotor yoke (5) inner surface, and magnet (6) is right Answer annular stator that two annulars are set, and the magnet (6) being located on same circumference is that the pole N and the pole S are arranged alternately；Positioned at same circle There are gaps between adjacent magnets (6) on week, and the quantity of magnet (6) and the quantity of U-shaped winding are according to arbitrary Conventional permanent magnet Motor slot number cooperates number setting；Rotor yoke (5) is in tubbiness, and connecting method is arranged in the center position at rotor yoke (5) interior bucket bottom Orchid, rotor yoke (5) cover outside stator unit, and coupling flange is connect with motor shaft (8) end.

2. outer rotor horseshoe-shaped winding permanent magnet motor according to claim 1, it is characterised in that: iron core frameworks (3) are Square plate opens up the hole of the leg insertion for horseshoe-shaped stator core in square plate.

3. outer rotor horseshoe-shaped winding permanent magnet motor according to claim 2, it is characterised in that: iron core frameworks (3) are adopted It is made of permeability magnetic material, is No. 45 steel plates or Q235 steel plate or Q195 steel plate.

4. outer rotor horseshoe-shaped winding permanent magnet motor according to claim 1, it is characterised in that: magnet (6) uses magnetic Steel glue is pasted onto rotor yoke (5) surface.

5. outer rotor horseshoe-shaped winding permanent magnet motor according to claim 1, it is characterised in that: connection end cap and assembly Sleeve is structure as a whole.

6. outer rotor horseshoe-shaped winding permanent magnet motor according to claim 1, it is characterised in that: in rotor yoke (5) Bucket bottom on open up heat dissipation ventilation notch.

7. outer rotor horseshoe-shaped winding permanent magnet motor according to claim 1, it is characterised in that: rotor yoke (5) with Dustproof construction is set between connection end cap, and dustproof construction is the maze trough being arranged on connection end cap end face, rotor yoke (5) Bung hole is inserted into maze trough, and it is dust-proof to form labyrinth.

Technical field

The present invention relates to a kind of outer rotor horseshoe-shaped winding permanent magnet motors, belong to magneto technical field.

Background technique

Compared with traditional electro-magnetic motor, magneto has structure simple, compact, and operational reliability is high, small in size, light Low, high-efficient, the advantages such as control precision height are lost in quantization.The shape and size of magneto type unlike conventional induction Motor, can be with equal remarkable advantages versatile and flexible.The thus extensive concern by industry and civilian various industries.

Summary of the invention

The present invention proposes a kind of outer rotor horseshoe-shaped winding permanent magnet motor, using horseshoe-shaped stator core, specific skill Art scheme are as follows:

A kind of outer rotor horseshoe-shaped winding permanent magnet motor, including stator unit, rotor unit and shell end cover, stator list Member is connect with shell end cover, and stator unit is packed into rotor unit, motor axis connection rotor unit and motor shaft rotation connection machine Shell end cap；

The annular stator that stator unit is surrounded by multiple horseshoe-shaped stators, the opening of all horseshoe-shaped stators outwardly, Horseshoe-shaped stator is by silicon steel sheet stack at winding stator winding forms horseshoe-shaped stator on the two legs of horseshoe-shaped stator Iron core, the U-shaped winding one end magnetic field for defining horseshoe-shaped stator core is the pole N, and other end magnetic field is the pole S；Horseshoe-shaped stator Every leg end secured core frame of iron core, between two iron core frameworks on each horseshoe-shaped stator core there are Gap；It constitutes between the two neighboring iron core frameworks on each adjacent two horseshoe-shaped stator core of annular stator there are gap, And constitute annular stator each adjacent two horseshoe-shaped stator core the pole N and the pole S be alternately arranged；

Shell end cover includes connection end cap and assembly sleeve, and assembly sleeve is vertical in the plate face of connection end cap；Assembly Sleeve is inserted into annular stator, stator unit and shell end cover is poured using epoxide resin vacuum, and curing molding, so that Stator core, winding and shell end cover become an one-piece stator assembly；

Motor shaft plugging in fitting sleeve simultaneously passes through at least one bearing rotation connection assembly sleeve, motor shaft one end protrusion dress With sleeve；

Rotor unit includes rotor yoke and multiple magnet being pasted on rotor yoke inner surface, and the corresponding annular of magnet is fixed Son two annulars of setting, and the magnet being located on same circumference is that the pole N and the pole S are arranged alternately；It is adjacent on same circumference There are gap, the quantity of magnet and the quantity of U-shaped winding to cooperate number to set according to arbitrary Conventional permanent magnet motor slot number between magnet It sets；Rotor yoke is in tubbiness, and coupling flange is arranged in the center position at rotor yoke interior bucket bottom, and rotor yoke is covered in stator unit Outside, coupling flange are connect with motor shaft ends.

The principle of outer rotor horseshoe-shaped winding permanent magnet motor of the invention is, horseshoe-shaped stator winding using it is U-shaped around Group one end magnetic field is N, then other end magnetic field must be the pole S principle, and make full use of this principle, and the both ends of the pole N-S are put simultaneously It is placed in air-gap field.I.e. form axial magnetic flux branch forms radial flux branch to motor again in this way, and magnetic is greatly utilized Field action does not have conventional motor stator yoke, increases the torque density and power density of magneto.The adjacent two each winding of stator It is powered when a certain, forms N-S/N-S magnetic pole of the stator, and by adjacent magnet steel N- in these two pair N-S/N-S magnetic pole respective rotor S/N-S。

To the preferred of technical solution of the present invention, iron core frameworks are square plate, are opened up in square plate for horseshoe-shaped stator core Leg insertion hole.Iron core frameworks are made of permeability magnetic material, are No. 45 steel plates or Q235 steel plate or Q195 steel plate.Due to each Horseshoe-shaped stator core is independent unit, and horseshoe-shaped stator core is fixed in iron core frameworks, and iron core frameworks are to lead Magnetic material has magnet accumulating cap, and between each iron core frameworks N-S cannot short-circuit magnetic circuit, need to be separated, therefore two neighboring iron There are gaps between core frame.

To the preferred of technical solution of the present invention, magnet is pasted on rotor yoke inner surface using magnet steel glue.

To the preferred of technical solution of the present invention, connection end cap and assembly sleeve are structure as a whole.

To the preferred of technical solution of the present invention, heat dissipation ventilation notch is opened up on the bucket bottom of rotor yoke.

To the preferred of technical solution of the present invention, dustproof construction is set, dustproof construction is between rotor yoke and connection end cap Maze trough on connection end cap end face is set, and the bung hole of rotor yoke is inserted into maze trough, and it is dust-proof to form labyrinth.

The present invention compared with prior art the utility model has the advantages that

This magneto is designed by the mounting structure to winding on stator, proposes a kind of composite magnetic circuit structure, Lightweight is realized to improve magneto torque density and power density, and field frame assembly is used into vacuum encapsulation scheme, is mentioned High heat dissipation effect, torque density with higher are excellent.

1, using concentratred winding mode, copper material is saved, while copper loss is greatly reduced.

2, using horseshoe-shaped iron core, iron core uses silicon steel plate stacking or molding bonded, saves silicon steel material and expends.

3, using horseshoe-shaped iron core, one end pole N, the other end must be the pole S, the equal coiling line in horseshoe-shaped iron core both ends Circle has and doubles magnet accumulating cap, and utilization rate is high.

4, using horseshoe-shaped iron core, stator loss is low, and magnetic circuit substantially shortens, and loss reduces.

5, horseshoe-shaped iron core not only utilizes axial magnetic circuit, but also radial magnetic circuit is utilized, and belongs to mixed type magnetic circuit Permanent Magnet and Electric Machine.

6, it using horseshoe-shaped iron core, can be made multipole, be suitble to low-speed big applications, main screw lift can be substantially Mitigate.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of horseshoe-shaped stator core.

Fig. 2 is the schematic diagram that simulated machine forms axial magnetic flux branch.

Fig. 3 is the schematic diagram that simulated machine forms radial flux branch.

Fig. 4 is that two neighboring horseshoe-shaped stator core winding is powered to forming the schematic diagram of N-S/N-S magnetic pole of the stator.

Fig. 5 is the schematic diagram of adjacent magnet steel N-S/N-S in two pairs of N-S/N-S magnetic pole respective rotors by Fig. 4.

Fig. 6 is that iron core frameworks form an annular schematic diagram.

Fig. 7 is the overall schematic of outer rotor horseshoe-shaped winding permanent magnet motor.

Fig. 8 is the cross-sectional view of Fig. 7.

Fig. 9 is the assembling schematic diagram of stator unit and rotor unit.

Figure 10 is the stereoscopic schematic diagram of Fig. 9.

Specific embodiment

To keep the contents of the present invention more obvious and easy to understand, done further below in conjunction with attached drawing 1- Figure 10 and specific embodiment Description.

In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not For limiting the present invention.

According to Fig. 1, Fig. 2 and Fig. 3, the horseshoe-shaped stator winding of outer rotor horseshoe-shaped winding permanent magnet motor is utilized U-shaped winding one end magnetic field is N, then other end magnetic field must be the pole S principle, and make full use of this principle, and the both ends of the pole N-S are same When be placed in air-gap field.I.e. form axial magnetic flux branch forms radial flux branch to motor again in this way, greatly utilizes Magnetic fields, do not have conventional motor stator yoke, increase the torque density and power density of magneto.

According to Figure 4 and 5, the adjacent two each winding of stator is powered when a certain, forms N-S/N-S magnetic pole of the stator, and By adjacent magnet steel N-S/N-S in these two pair N-S/N-S magnetic pole respective rotor.

N horseshoe-shaped stator core is fixed in iron core frameworks, since each horseshoe-shaped stator core is only Vertical unit, is fixed in iron core frameworks, and frame is permeability magnetic material, there is magnet accumulating cap, and cannot short circuit between each frame N-S Magnetic circuit needs to be separated, as shown in Fig. 2, Fig. 3 and Fig. 6.

It should be noted that if rotor is spliced using 16 pole magnet steel using 18 horseshoe-shaped stator cores, Form 18U/16P type magneto model；The invention does not limit 18U/16P；It can arbitrary conventional three-phase motor with permanent magnets slot Pole cooperates number, such as: 9U/8P；12U/10P；36U/24P；36U/32P etc. is not repeated；The invention does not limit three-phase simultaneously, It is equally applicable to five phases, six phases, nine equal magnetoes.Herein only to facilitate illustrating, using 18U/16P type structure explanation Specific summary of the invention.