CN203135664U

CN203135664U - Axial-radial excitation permanent magnet brushless motor

Info

Publication number: CN203135664U
Application number: CN 201220746244
Authority: CN
Inventors: 曹玉和; 刘晋权
Original assignee: SHENZHEN SHUANGHUAN QX MOTOR CO Ltd
Current assignee: SHENZHEN SHUANGHUAN QX MOTOR CO Ltd
Priority date: 2012-12-31
Filing date: 2012-12-31
Publication date: 2013-08-14
Anticipated expiration: 2022-12-31

Abstract

The utility model applies to the field of motors and provides an axial-radial excitation permanent magnet brushless motor. The motor comprises a first axial rotor, a second axial rotor, a radial rotor and a stator assembly. The stator assembly comprises a fixing shaft, a radial stator support fixed on the fixing shaft, a first axial stator, a second axial stator, a radial stator, a first folding winding and a second folding winding. The first axial stator, the second axial stator and the radial stator are fixed on the radial stator support. The first axial rotor and the second axial rotor are arranged at the two ends of the fixing shaft in a penetrating mode and are arranged in an opposite manner. Permanent magnets are arranged in the rotors respectively. The first axial rotor, the second axial rotor and the radial rotor form an enclosed cavity, and the stator assembly is fixed on the fixing shaft located inside the enclosed cavity. According to the axial-radial excitation permanent magnet brushless motor, the space in the motor can be utilized to the hilt, the magnetic field intensity distribution of the motor is improved, and thus the efficiency of the motor is improved.

Description

The diameter of axle is to the excitation permanent magnetic brushless

Technical field

The utility model relates to electric motors, more particularly, relates to the diameter of axle to the excitation permanent magnet brushless electromotor.

Background technology

The diameter of axle is a kind of electromechanical energy conversion device to the excitation permanent magnet brushless electromotor, and it is widely used in the walking instrument, and the applied motor of walking instrument has its distinctive performance requirement: starting torque is big, stepless time adjustment, electric current is little, power density is big etc.The traveling sparetime university of being expert at requires the high accuracy constant speed to drive more, and is more and more higher in the requirement of aspects such as low vibration, low noise in addition; Therefore except the electromagnetic torque pulsation that requires current of electric to produce want little, it is little also to require to reduce the magnetic response moment variations that permanent magnetic field and core structure produce.Trend when the structure of magneto commonly used is passed air gap by magnetic flux is divided into radial flux column permanent-magnet motor and axial magnetic flux disc-type permanent magnet motor, the structure of every kind of independent type motor is compact not enough, can not effectively improve power density, for example, for radial flux column permanent-magnet motor, when the motor draw ratio hour, winding overhang length accounts for the large percentage of motor axial length, and bottom land is not utilized to a big chunk space of between centers; And for the axial magnetic flux disc-type permanent magnet motor, have a big chunk space to be wasted on the winding of end at internal diameter unshakable in one's determination and external diameter.

The utility model content

The utility model provides a kind of diameter of axle to the excitation permanent magnet brushless electromotor, and it is not enough and magnetic field intensity that cause is not high that purpose is to solve motor internal space utilization in the prior art, and then cause the not high problem of electric efficiency.

In order to address the above problem, the technical solution adopted in the utility model is:

The diameter of axle is to the excitation permanent magnetic brushless, comprise: first axial rotor, second axial rotor, radial rotor and be provided with the stator module of fixed axis, described first axial rotor and second axial rotor are located in the two ends of described fixed axis, and described radial rotor is arranged between first axial rotor and second axial rotor; Described first axial rotor, second axial rotor and radial rotor are formed an enclosed cavity, described stator module is fixed on the described fixed axis that is in the described enclosed cavity, described stator module also comprises: the radial stator support, first axial stator, second axial stator, radial stator, the first folding winding and the second folding winding, described radial stator support is vertically fixed on the described fixed axis, described first axial stator, second axial stator and radial stator are fixed on the described radial stator support, and the described first folding winding and the second folding winding are wrapped in described first axial stator respectively, on second axial stator.

Further: described first axial rotor comprises: the first axial permanent magnetic iron, first end cap, first magnetic conductive disk and first rolling bearing; Described first end cap is connected by an end of first rolling bearing and described fixed axis; Described first magnetic conductive disk is fixed on the described first end cap inboard, and the described first axial permanent magnetic body is fixed on the described first magnetic conductive disk inboard; Described second axial rotor also comprises: the second axial permanent magnetic iron, second end cap, second magnetic conductive disk and second rolling bearing; Described second end cap is connected by the other end of second rolling bearing and described fixed axis; Described second magnetic conductive disk is fixed on the second end cap inboard, and the described second axial permanent magnetic body is fixed on the second magnetic conductive disk inboard.。

Further: described radial rotor comprises: radial permanent magnet iron, casing and magnetic guiding loop; Described casing is cylindric, and its both ends of the surface are fixed with first axial rotor, second axial rotor respectively; Described magnetic guiding loop is fixed on described casing inboard, and described radial permanent magnet body is fixed on described magnetic guiding loop inboard.

Further: described radial stator support is hollow tubular and is connected with described fixed axis square crossing; Described radial stator is fixed in the both ends of the surface of described radial stator support, and described first axial stator and second axial stator are fixed on described radial stator support excircle and are symmetrically distributed with respect to described fixed axis axial line.

Further: described first axial rotor and second axial rotor are oppositely arranged.

Further: also comprise the three phase mains lead-in wire, described three phase mains lead-in wire is connected with the first folding winding or the second folding winding.

The technology that the utility model provides beneficial effect compared with prior art is: the utility model is by arranging first axial stator, second axial stator respectively and at the radial stator bracket end face radial rotor being set on the circumference side of the radial stator support of open circles tubulose, and in first axial stator, second axial stator first folding winding and the second folding winding are set respectively, utilized the space of motor internal to greatest extent, improve the magnetic density of motor internal, therefore also improved the power of motor.

Description of drawings

The diameter of axle that Fig. 1 provides for the utility model embodiment is to excitation permanent magnet brushless electromotor structural representation;

The diameter of axle that Fig. 2 provides for the utility model embodiment is to the first axial rotor structure schematic diagram of excitation permanent magnet brushless electromotor;

The diameter of axle that Fig. 3 provides for the utility model embodiment is to the radial rotor structural representation of excitation permanent magnet brushless electromotor;

The diameter of axle that Fig. 4 provides for the utility model embodiment is to the stator module structural representation of excitation permanent magnet brushless electromotor.

Embodiment

In order to make technical problem to be solved in the utility model, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.With reference to figure 1 and in conjunction with Fig. 2, Fig. 3, Fig. 4.The diameter of axle that Fig. 1 provides for the utility model embodiment is to excitation permanent magnet brushless electromotor structural representation.Fig. 2 is the structural representation of first axial rotor 1, and it is identical with second axial rotor, 2 structures.

With reference to figure 1, this diameter of axle is made up of first axial rotor 1, second axial rotor 2, radial rotor 3, stator module 4 to the excitation permanent magnet brushless electromotor.Stator module 4 includes fixed axis 46, the first axial rotors 1 and the second axial rotor 2 relative fixed axis 46 that passes respectively, and is oppositely arranged on the two ends of fixed axis 46.3 of radial rotor are set on the fixed axis 46, and it is the open circles tubular on the whole, its two end faces respectively with the inboard fixed seal connection of inboard and second axial rotor 2 of first axial rotor 1.Therefore, first axial rotor 1, second axial rotor 2 and radial rotor 3 have constituted a cylindrical cavity that is enclosed within on the fixed axis 46.Stator module 4 also includes first axial stator 41, radial stator support 42, radial stator 43, the first folding winding 44, second folding winding 48, the second axial stator 45, fixed axis 46.Radial stator support 42 is the open circles tubulose, its axial line and fixed axis 46 vertical distribution.First axial stator 41, second axial stator 45 are fixed on the radial stator support 42 sidewall circumference, and the first folding winding 44 and second folding 48 of the windings be wrapped in first axial stator 41 respectively, above second axial stator 45.And at the two ends of radial stator support 42, radial stator 43 is arranged fixedly then.The design main points of said structure are, utilize the finite length of radial stator support 42, as much as possible twine folding winding more, improve the motor internal utilization of space, promote motor power.

With reference to figure 1 and in conjunction with Fig. 2, Fig. 3.First axial rotor 1 comprises: first end cap 11, first magnetic conductive disk 12, the first axial permanent magnetic body 13, first rolling bearing 14.First magnetic conductive disk 12 is fixed on the inboard of first end cap 11, and the first axial permanent magnetic body 13 is fixed on the inboard of first magnetic conductive disk 12, and first end cap 11 is connected an end of fixed axis 46 by clutch shaft bearing 14.Because structure and first axial rotor of second axial rotor 2 are identical, namely comprise: second end cap 21, second magnetic conductive disk 22, the second axial permanent magnetic body 23, second bearing 24; The inboard that is fixed on second end cap 21 of second magnetic conductive disk 22, the second axial permanent magnetic body 23 is fixed on the inboard of second magnetic conductive disk 22.Second end cap 21 is connected the other end of fixed axis 46 by clutch shaft bearing 24.Because first axial rotor 1 and second axial rotor 2 are oppositely arranged on the two ends of fixed axis 46 respectively, therefore the first axial permanent magnetic body 13 and the second axial permanent magnetic body 23 are oppositely arranged.

With reference to figure 1 and in conjunction with Fig. 3, Fig. 3 is the structural representation of radial rotor 3.Radial rotor 3 comprises: casing 31, magnetic guiding loop 32, radial permanent magnet body 33.Casing 31 is cylindric, and magnetic guiding loop 32 is fixed on the inboard of casing 31, and radial permanent magnet body 33 is fixed on the inboard of magnetic guiding loop 32.The both ends of the surface of radial rotor 3 are connected with first end cap 11 of first axial rotor 1 and second end cap, the 21 usefulness bolt (not shown) removable seals of second axial rotor 2 respectively.Therefore first axial rotor 1, second axial rotor 2 and radial rotor 3 have constituted the columnar cavity of a sealing, and the inside circumference of this cavity is provided with radial permanent magnet body 33, two bottoms and then is provided with the first axial permanent magnetic body 13 and the second axial permanent magnetic body 23.The inboard that is equivalent to whole cavity all has been covered with magnetic field, and this provides necessary magnetic field environment for motor produces electric current.

With reference to figure 4, in order more effectively to utilize the confined space of motor internal, first axial stator 41 and second axial stator 45 are symmetrically distributed with respect to fixed axis 46 axial lines.Because the first folding winding 44 and the second folding winding 48 are wrapped in first axial stator 41 and second axial stator, 45 outsides, therefore, the first folding winding 44 and the second folding winding 48 also are symmetrically distributed with respect to the axial line of fixed axis 46, it is more even that this structure distributes coil windings, can utilize the magnetic flux of motor internal to greatest extent.

With reference to figure 4, in addition, for the electric current that motor is produced effectively transfers out, also comprise three phase mains lead-in wire 47, it is connected with the first folding winding 44 or the second folding winding 48, and is connected with outside electrical energy storage by fixed axis 46.In order to reach the steady reliability service of motor, the apolegamy of magnetic pole logarithm and number of stator slots is extremely important.Q (every extremely every phase groove number) equals integer, is integer groove winding; Equal mark, be fractional slot winding.If in permagnetic synchronous motor, adopt integer groove winding, the magnetic pole that tends to produce the tooth of stator and rotor is inhaled mutually and is produced the phenomenon of " the tooth utmost point aligns " of similar and stepping motor, the pulsation that causes of slot effect just, operation produces harmful effect to motor, therefore adopts fractional slot winding here.

One of advantage of fractional slot winding can stagger the tooth on the stator and epitrochanterian magnetic pole mutually exactly, thereby has improved the runnability of motor.

According to formula q=Z/2pm, when q is integer, claim integer groove winding; When q is mark, claim fractional slot winding.Wherein: q-every extremely every phase groove number; Z-groove number; 2P-number of pole-pairs; M-number of phases.In the present embodiment, motor adopts fractional slot winding.The groove of fractional slot winding and magnetic pole cooperate a lot, mainly see whole motor technology index, particularly rotating speed, and high rotating speed magnetic pole apolegamy is few; The apolegamy of low speed magnetic pole is more.As: m=3, Z=36, P=20, q=Z/2pm=3/10 is applicable to slowspeed machine; M=3, Z=12, P=7, q=Z/2pm=2/7 is applicable to middle slowspeed machine.The design is 8 pairs of magnetic poles, both 16 utmost points, and then: this is the mark that can not make an appointment with again for q=Z/2pm=18/16*3=3/8, so it is a fractional slot winding motor.

The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.

Claims

1. the diameter of axle is to the excitation permanent magnetic brushless, it is characterized in that: comprising: first axial rotor, second axial rotor, radial rotor and the stator module that is provided with fixed axis, the relative two ends of being located at described fixed axis with second axial rotor of described first axial rotor, described radial rotor is arranged between first axial rotor and second axial rotor, make described first axial rotor, second axial rotor and radial rotor are formed an enclosed cavity, described stator module is in this enclosed cavity, described stator module also comprises: the radial stator support, first axial stator, second axial stator, radial stator, the first folding winding and the second folding winding, described radial stator support is vertically fixed on the described fixed axis, described first axial stator, second axial stator and radial stator are fixed on the described radial stator support, and the described first folding winding and the second folding winding are wrapped in described first axial stator respectively, on second axial stator.

2. the diameter of axle as claimed in claim 1 is characterized in that to the excitation permanent magnetic brushless: described first axial rotor comprises: the first axial permanent magnetic iron, first end cap, first magnetic conductive disk and first rolling bearing; Described first end cap is connected by an end of first rolling bearing and described fixed axis; Described first magnetic conductive disk is fixed on the described first end cap inboard, and the described first axial permanent magnetic body is fixed on the described first magnetic conductive disk inboard; Described second axial rotor comprises: the second axial permanent magnetic iron, second end cap, second magnetic conductive disk and second rolling bearing, and described second end cap is connected by the other end of second rolling bearing and described fixed axis; Described second magnetic conductive disk is fixed on the second end cap inboard, and the described second axial permanent magnetic body is fixed on the second magnetic conductive disk inboard.

3. the diameter of axle as claimed in claim 1 is characterized in that to the excitation permanent magnetic brushless: described radial rotor comprises: radial permanent magnet iron, casing and magnetic guiding loop; Described casing is cylindric, and its both ends of the surface are fixed with first axial rotor, second axial rotor respectively; Described magnetic guiding loop is fixed on described casing inboard, and described radial permanent magnet body is fixed on described magnetic guiding loop inboard.

4. the diameter of axle as claimed in claim 1 is characterized in that to the excitation permanent magnetic brushless: described radial stator support is hollow tubular and is connected with described fixed axis square crossing; Described radial stator is fixed in the both ends of the surface of described radial stator support, and described first axial stator and second axial stator are fixed on described radial stator support excircle and are symmetrically distributed with respect to described fixed axis axial line.

5. the diameter of axle as claimed in claim 1 is characterized in that to the excitation permanent magnetic brushless: also comprise the three phase mains lead-in wire, described three phase mains lead-in wire is connected with the first folding winding or the second folding winding.