CN201708671U

CN201708671U - Permanent magnetic slotless brushless direct current motor

Info

Publication number: CN201708671U
Application number: CN201020242579XU
Authority: CN
Inventors: 马玉林; 裴超
Original assignee: XIAN CILIN ELECTRICAL CO Ltd
Current assignee: XIAN CILIN ELECTRICAL CO Ltd
Priority date: 2010-06-29
Filing date: 2010-06-29
Publication date: 2011-01-12
Anticipated expiration: 2020-06-29

Abstract

The utility model relates to a permanent magnetic slotless brushless direct current motor, which comprises a rotor, a stator arranged outside the rotor, and a multi-phase stator winding arranged on the stator, and is characterized in that the stator is internally provided with a winding framework, and the winding framework is provided with a winding slot for placing the stator winding. Single conductor of the stator winding is embedded in the winding slot, and is automatically clamped after the adjacent conductor is embedded, so that the winding process can be simplified, the strength of the winding can be improved, and the precision of the air gap of the winding can be ensured.

Description

A kind of permanent magnetism Slotless Brushless DC Motor

Technical field

The utility model belongs to the mechanical ﹠ electrical technology field, is specifically related to a kind of permanent magnetism Slotless Brushless DC Motor.

Background technology

The most compacting moulding by casting that adopt of existing slotless winding, machining accuracy is poor, intensity is low, be unfavorable for batch process.

The utility model content

The purpose of this utility model provides a kind of permanent magnetism Slotless Brushless DC Motor, to overcome the most compacting moulding by casting that adopt of slotless winding, machining accuracy is poor, intensity is low, be unfavorable for that the problem of producing in batches reaches because existing slotless winding does not have skeleton, increased manufacture difficulty, and very difficult coiling is even, makes the problem of the air gap low precision between winding and the rotor.

Technical solution of the present utility model is: a kind of permanent magnetism Slotless Brushless DC Motor, comprise rotor, be arranged on the outer stator of this rotor, be arranged on the multi phase stator winding on this stator, its special character is, described stator inboard is provided with the winding skeleton, and this winding skeleton is provided with the slot for winding that is used to put described stator winding.

The cross section of slot for winding is by 2/3rds annular of bottom and form with the lozenges that this annular upper end is joined, and this lozenges and this annular joint are to annular inner process, and the top of this lozenges is to annular outer incline.

Be provided with the relative slot for winding in bottom on the above and below of winding skeleton.

Described motor is provided with four pairs of permanent magnets, be nested in the rotor core, and this rotor core is divided into 8 angles is 45 ° zone, on the inner surface of the stator circumference that each zone is corresponding this six phases stator winding is set, the 30 ° of electrical degrees in every group of winding interval, described stator winding is six phases, and every phase stator winding is arranged in the described slot for winding in turn, and the end of the same name of first phase winding, the different name end of second phase winding, the different name end of third phase winding, the end of the same name of the 4th phase winding, the end of the same name of the 5th phase winding, the different name end of the 6th phase winding all is connected to the common junction at desirable zero point; Stator is provided with six rotor-position sensors, and each rotor-position sensor is arranged on the magnetic circuit center of every phase winding, and magnetic flux density reduces the alternate width of the width of part less than described six phase stator winding on the permanent magnet.

The winding skeleton that the utility model provides is provided with a plurality of metallic channels, and the gap between each metallic channel is even, in the winding conducting wire insertion wire groove, is cast for one with stator more at last, so the winding making easily, with rotor airgap precision height.

Description of drawings

Fig. 1 is a six-phase permanent-magnet Slotless Brushless DC Motor structural representation;

Fig. 2 is a winding skeleton structure schematic diagram;

Fig. 3 is the six-phase permanent-magnet Slotless Brushless DC Motor structural representation that is provided with position transducer.

Embodiment

Referring to Fig. 1, be the cross-sectional structure schematic diagram of permanent magnetism Slotless Brushless DC Motor of the present utility model, as can be seen from the figure rotor 1, be arranged on the outer stator 2 of this rotor 1, the permanent magnet 3 on the rotor 1, be arranged on the winding skeleton 4 of these stator 2 inboards.

Referring to Fig. 2, this winding skeleton 4 is provided with the slot for winding 5,6 that is used to put stator winding, the cross section of this slot for winding 5,6 is formed by 2/3rds annular 7 of bottom with the lozenges 8 that these annular 7 upper ends join, this lozenges 5 is jut 9 with these annular 7 joints to annular inner process, and the top of this lozenges 8 is to annular 7 outer inclines.Scheme thus, as seen, slot for winding 5,6 is separately positioned on the above and below of winding skeleton 4, and the bottom of slot for winding 5,6 is relative, all notch is outside, so be provided with, be convenient to winding is placed in the slot for winding 5,6, treat that winding places in the slot for winding 5,6 after, the jut 9 on it is used to block winding, guarantee firm the placing in the slot for winding 5,6 of winding, after finishing the storing of winding, slot for winding 5,6 is closed, the inner surface with slot for winding 5 and stator 2 is cast for one again, be fixed on the inner surface of stator 2 with being about to winding skeleton 4, realize complete stator 2.

When stator winding is six phase times, every phase stator winding is arranged in the described slot for winding in turn, and the different name end of the end of the same name of first phase winding, second phase winding, the different name end of third phase winding, the end of the same name of the 4th phase winding, the end of the same name of the 5th phase winding, the different name end of the 6th phase winding all are connected to the common junction at desirable zero point.At this moment, permanent magnet 3 is four pairs, it is 45 ° zone that rotor core (permanent magnet 3 is nested in this rotor core) is divided into 8 angles, on the inner surface of the stator circumference that each zone is corresponding this 6 groups of multi phase stator windings is set, and every group of winding be 30 ° of electrical degrees at interval.

Referring to Fig. 3, motor of the present utility model is provided with four pairs of permanent magnets 3, be nested in the rotor core 10, and this rotor core 10 is divided into 8 angles is 45 ° zone, on the inner surface of the stator circumference that each zone is corresponding this six phases stator winding is set, the 30 ° of electrical degrees in every group of winding interval, described stator winding is six phases, and every phase stator winding is arranged on slot for winding interior 5 in turn, 6, and the end of the same name of first phase winding, the different name end of second phase winding, the different name end of third phase winding, the end of the same name of the 4th phase winding, the end of the same name of the 5th phase winding, the different name end of the 6th phase winding all is connected to the common junction at desirable zero point; Stator is provided with six rotor-position sensors 11, and each rotor-position sensor 11 is arranged on the magnetic circuit center of every phase winding, and magnetic flux density reduces the alternate width of the width of part less than described six phase stator winding on the permanent magnet 3.Among Fig. 3 12 is for forming the non magnetic rotor block of rotor 1.

Claims

1. permanent magnetism Slotless Brushless DC Motor, comprise rotor, be arranged on the outer stator of this rotor, be arranged on the multi phase stator winding on this stator, it is characterized in that: described stator inboard is provided with the winding skeleton, and this winding skeleton is provided with the slot for winding that is used to put described stator winding.

2. motor according to claim 1, it is characterized in that: the cross section of described slot for winding is by 2/3rds annular of bottom and form with the lozenges that this annular upper end is joined, this lozenges and this annular joint are to annular inner process, and the top of this lozenges is to annular outer incline.

3. motor according to claim 2 is characterized in that: be provided with the relative slot for winding in bottom on the above and below of described winding skeleton.

4. motor according to claim 3, it is characterized in that: described motor is provided with four pairs of permanent magnets, be nested in the rotor core, and this rotor core is divided into 8 angles is 45 ° zone, on the inner surface of the stator circumference that each zone is corresponding this six phases stator winding is set, the 30 ° of electrical degrees in every group of winding interval; Described stator winding is six phases, and every phase stator winding is arranged in the described slot for winding in turn, and the different name end of the end of the same name of first phase winding, second phase winding, the different name end of third phase winding, the end of the same name of the 4th phase winding, the end of the same name of the 5th phase winding, the different name end of the 6th phase winding all are connected to the common junction at desirable zero point;

Described stator is provided with six rotor-position sensors, and each rotor-position sensor is arranged on the magnetic circuit center of every phase winding, and magnetic flux density reduces the alternate width of the width of part less than described six phase stator winding on the permanent magnet.