CN105811701A - Stator applied to thin type PMSM and motor provided with stator - Google Patents
Stator applied to thin type PMSM and motor provided with stator Download PDFInfo
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- CN105811701A CN105811701A CN201410843673.3A CN201410843673A CN105811701A CN 105811701 A CN105811701 A CN 105811701A CN 201410843673 A CN201410843673 A CN 201410843673A CN 105811701 A CN105811701 A CN 105811701A
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- stator
- iron plate
- soft magnetism
- motor
- magnetism iron
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Abstract
The invention provides a stator applied to a thin type PMSM. The stator comprises an iron core and a winding arranged around the iron core. The iron core comprises at least one stator chip. At least one end of the stator chip is provided with a flanging along the length direction thereof, wherein the edge of the end surface of the flanging is turned up along the thickness direction thereof. According to the technical scheme of the stator structure, the stator space of the motor can be fully utilized. Therefore, the power density of the motor is increased and the thickness of the motor is reduced. Meanwhile, the electrical loss of the iron core of the motor is reduced due to the iterated installation of the iron core. The number of turns of an armature winding can be reduced, so that the thickness of the end portion of the winding is reduced. Moreover, the resistance of the winding can be reduced, so that the efficiency of the motor is increased.
Description
Technical field
The present invention relates to the field of the permagnetic synchronous motor with radial magnetic field, be specifically related to a kind of stator for slim permagnetic synchronous motor and apply the motor of this stator.
Background technology
Motor refers to a kind of electrical installation realizing energy converting between mechanical.Permagnetic synchronous motor (PMSM) is because its power density and efficiency are higher, thus plays an increasingly important role in modern industry and household products.
The electromagnetic structure of motor is typically with radial magnetic field, electric machine structure shown as shown in Figure 1, Figure 2.In Fig. 1, Fig. 2, which show the basic structure of a PMSM with outer rotor, it includes rotor rim, rotor-exciting magnet steel, stator core and the armature winding being wrapped on stator core；Fig. 3 is shown that the electromagnetic structure of this motor.
The magnet steel of PMSM is to be made by permanent magnet material.Rotor rim is to be made up of whole steel.In order to reduce iron loss, stator core is usually by the repeatedly dress of the soft magnet sheet material as the such high magnetic conduction of silicon steel sheet.When motor rotates, the magnetic field that the teeth portion of stator core and yoke portion pass through is alternation.The stator core adopting repeatedly assembling structure can efficiently reduce in iron core because the electrical loss caused by alternating magnetic field.
The principal element of limiting motor thickness is at the stator structure of motor, for instance, the thickness of stator core and the thickness of end turn, see Fig. 3.Iron plate shown in Fig. 6 is used to repeatedly dress up Fig. 3 and shown stator core.When the thickness of motor reduces time, it is necessary to reduce the thickness of stator core.Owing to being relevant to the active area iron core and rotor magnetic steel through the magnetic flux of armature winding.The thickness reducing iron core can make this active area reduce, and also just reduces stator core and accepts the ability in magnetic field produced by the permanent-magnet steel of rotor.Torque constant in order to ensure motor can reach required value, and the magnetic linkage between rotor field and armature winding is necessary for reaching required value.So, when stator core thickness reduces, the number of turn of armature winding must increase.But, the number of turn increase of armature winding also implies that the thickness of two ends of armature winding must increase, and sees Fig. 3, Fig. 4 and Fig. 5.Therefore, adopting the motor of radial magnetic field, it is ensured that the electromagnetic performance of motor, motor thickness is difficult to be reduced.High performance thin electric motor implements highly difficult.
It is obvious that for thin electric motor, the gauge of the end of motor winding must be controlled by exactly, so that there being enough air gaps between winding overhang and rotor, thus avoiding in rotor rotation process, rotor and winding overhang are collided.But in the winding process of winding, the thickness of winding overhang is difficult to accurately control, when increasing particularly in umber of turn.This also results in thin electric motor production process, and the yields of motor is relatively low.The reliability of motor is also poor.
When iron core very thin thickness time because and contact surface between motor base only small, it is difficult to be fixed on the support of motor.This reliability that also can cause motor and the problem produced on yield.
Therefore, for existing problems of the prior art, the technology of a kind of reliability stator for slim permagnetic synchronous motor high, high performance and the motor of applying this stator need to be provided to be particularly important.
Summary of the invention
It is an object of the invention to avoid weak point of the prior art to provide a kind of reliability the stator for slim permagnetic synchronous motor high, high performance.
Another goal of the invention of the present invention is in that to avoid weak point of the prior art to provide a kind of reliability the slim permagnetic synchronous motor with radial magnetic field high, high performance.
The goal of the invention of the present invention is achieved through the following technical solutions:
A kind of stator for slim permagnetic synchronous motor is provided, stator includes iron core and is set around the winding of iron core, described iron core includes at least one soft magnetism iron plate, and length direction at least one end of described soft magnetism iron plate is provided with end face edge through-thickness and turns up the flanging of formation.
Wherein, described flanging is vertically arranged with the length direction of described soft magnetism iron plate.
Wherein, the height of described flanging is 0.1 times～1.5 times of the thickness of the end of winding.
Wherein, described iron core includes soft magnetism iron plate and iron plate, described soft magnetism iron plate and described iron plate closed assembly, at least one end of the length direction of described soft magnetism iron plate is provided with flanging, and the end face edge through-thickness that described flanging is soft magnetism iron plate turns up formation to away from iron plate one side.
Wherein, described iron core includes two soft magnetism iron plate closed assemblies, and the two ends of the length direction of two described soft magnetism iron plates are respectively arranged with flanging, and the end face edge through-thickness that described flanging is soft magnetism iron plate outwards turns up formation.
Wherein, described iron core includes two soft magnetism iron plates and at least one of which soft magnetism iron plate, soft magnetism iron plate described at least one of which is arranged between said two soft magnetism iron plate, two soft magnetism iron plates and the repeatedly dress of soft magnetism iron plate described at least one of which, the two ends of the length direction of two described soft magnetism iron plates are respectively arranged with flanging, and the end face edge through-thickness that described flanging is soft magnetism iron plate outwards turns up formation.
Wherein, the stamped molding of flanging of described soft magnetism iron plate.
Another goal of the invention of the present invention is realized by following proposal:
A kind of slim permagnetic synchronous motor with radial magnetic field, including rotor rim, rotor magnetic steel, motor base sum stator, described rotor rim is fixed on motor base, it is provided with rotor magnetic steel in described rotor rim, described motor base is fixed in one end of described stator, and the other end of described stator is arranged in described rotor rim.
Wherein, described in be arranged at soft magnetism iron plate one end turn up towards described rotor magnetic steel, what be arranged at the soft magnetism iron plate other end turns up be connected fixing with described motor base.
Beneficial effects of the present invention:
A kind of stator for slim permagnetic synchronous motor, stator includes iron core and is set around the winding of iron core, described iron core includes at least one soft magnetism iron plate, and at least one end in the radical length direction of described soft magnetism iron plate is provided with end face edge through-thickness and turns up the flanging of formation.
Stator structure disclosed in this invention, can make full use of the stator space of motor, utilize and flanging that winding thickness is suitable improves stator core and active area between magnet steel, thus reducing the integral thickness of iron core, and then add the power density of motor, reduce the thickness of motor.
Repeatedly the iron core of dress can reduce the electrical loss of the iron core of motor, and the number of turn of armature winding can reduce, thus reducing the thickness of the end of winding, and reduces the resistance of winding, improves the efficiency of motor.
The end of winding can be protected by the flanging that the end face in the radical length direction of soft magnetism iron plate is turned up; soft magnet sheet is towards the part of motor base; also the contact surface significantly increasing between iron core and support because of turning up of end face iron core, it is possible to conveniently firmly iron core and winding are arranged on motor base.
Additionally soft magnetism iron plate also is able to effectively strengthen the area in the yoke portion of stator core near the part that the end face of rotor rim is turned up, thus reducing the magnetic resistance of iron circuit, effectively improves the electromagnetic property of motor.Therefore, stator structure disclosed in this invention can be effectively improved the reliability of thin electric motor and the yields of motor production.
A kind of slim permagnetic synchronous motor with radial magnetic field, including rotor rim, rotor magnetic steel, motor base and stator, described stator is arranged in rotor rim, described rotor rim is fixed on motor base, being provided with rotor magnetic steel in described rotor rim, described stator is fixed on described motor base.
The slim low-power machine that the present invention relates to, the thickness of motor can at about 5mm, even thinner,.To this motor, constituting the iron plate of iron core generally at about 5, even fewer, increasing or reduce one, two iron plates is very big on the impact of this motor, and the impact of winding overhang thickness is also very big on the impact of motor characteristic and structure.
For Ultra-thin electric machine in prior art, common thinking is to reduce the thickness of iron core, owing to iron core is to be formed by many 2D structure iron plate closed assemblies, so cause a problem in that electric property and the mechanical performance of motor all worsen, the coiling of motor becomes extremely difficult, particularly due to, the ferrum core of 2D structure, because the magnetic surface of iron core is long-pending very little, the iron core notch installing coiling is had to become very little, and the number of turn of winding becomes a lot, these cause the coiling difficulty of winding, the bad control of precision of the thickness of winding overhang, special winding technology must be developed to realize the winding of small ultra-thin motor.Further, since the thickness of the end of winding increases, winding is easy to impaired, and this yields also resulting in motor production is low, the less reliable of motor.
The present invention turns up, by the end of soft magnetism iron plate, the problem that flanging solves Ultra-thin electric machine.So, iron core has reformed into 3D structure, change in this structure causes many great changes of Ultra-thin electric machine: reduce iron core thickness time, utilize on iron core and to turn up the edge active area to increase between stator core and rotor magnetic steel towards magnet steel, utilizing the contact area folding up increase iron core and support towards the installed surface of support on iron core, the electrical characteristic of motor and mechanical property can both be fully improved.Therefore, and the project plan comparison of employing traditional stator core structure, adopting the 3D stator core of the present invention, the thickness of motor can be effectively reduced.
Adopting the iron core of the present invention, the number of turn of the winding of motor reduces, thus the winding method of routine can be adopted to carry out the making of winding.Owing to winding is embedded among iron core, well being protected, therefore the reliability of thin electric motor can improve.
The present invention is very meaningful for the realization of small-sized thin electric motor.Thickness can be realized at about 5mm, even thinner, high performance motor.
Accompanying drawing explanation
The invention will be further described to utilize accompanying drawing, but the embodiment in accompanying drawing does not constitute any limitation of the invention.
Fig. 1 is the structural representation of the motor of existing employing radial magnetic field；
Fig. 2 is the assembling schematic diagram of the structure of the motor of existing employing radial magnetic field；
Fig. 3 is the structural representation that existing stator is assemblied in motor；
Fig. 4 is the structural representation of existing stator；
Fig. 5 is the sectional view of existing stator；
Fig. 6 constitutes the iron plate of conventional thin electric motor stator core；
Fig. 7 constitutes the structural representation of another angle of the iron plate of conventional thin electric motor stator core；
Fig. 8 is the stator core construction schematic diagram of embodiments of the invention 1；
Fig. 9 is the structural representation of another angle of the stator core of embodiments of the invention 1；
Figure 10 is the structural representation of the stator of embodiments of the invention 2；
Figure 11 is the sectional view of the stator of embodiments of the invention 2；
Figure 12 is the structural representation that the stator of embodiments of the invention 2 is assemblied in motor；
Figure 13 is the structural representation of the stator of embodiments of the invention 3；
Figure 14 is the structural representation of the stator of embodiments of the invention 4；
Fig. 1～Figure 14 includes:
1 rotor rim, 2 rotor magnetic steels, 3 iron cores, 4 windings, 5 motor bases, 6 flangings, 7 inner rings, 8 outer rings, 9 soft magnetism iron plates, 10 iron plates.
Detailed description of the invention
With the following Examples the present invention is described in further detail.
Embodiment 1
Such as Fig. 8, Fig. 9, Figure 10, shown, a kind of slim permagnetic synchronous motor with radial magnetic field, including rotor rim 1, rotor magnetic steel 2, motor base 5 and described stator, described stator is arranged in rotor rim 1, described rotor rim 1 is fixed on motor base 5, it is provided with rotor magnetic steel 2 in described rotor rim 1, described stator is fixed on described motor base 5, stator includes iron core and is set around the winding of iron core 3, described iron core 3 includes at least one soft magnetism iron plate 9, at least one end of the length direction of described soft magnetism iron plate 9 is provided with end face edge through-thickness and turns up the flanging 6 of formation.
Soft magnetism iron plate 9 arranges flanging 6 towards the end face of rotor magnetic steel 2, namely in the face of the area of rotor magnetic steel 2 can substantially increase, due to iron core 3 body still by the soft magnetism iron plate 9 of high magnetic conduction, motor rotate time because alternating magnetic field and the iron loss caused on the iron core 3 of motor still can effectively be contained.Adopting such iron core 3, because the magnetic flux of linkage substantially increases in winding 4, the number of turn of winding 4 can reduce, and the end thickness of winding 4 also just can reduce.These, be very effective for reducing the thickness of motor.And the minimizing of winding 4 number of turn can also reduce the resistance of winding 4.Therefore, the efficiency of motor can be improved.
Soft magnetism iron plate 9, towards the part of motor base 5, is provided with flanging 6, it will be apparent that add the contact surface between iron core 3 and motor base 5, it is possible to convenient firm iron core 3 and winding 4 being arranged on motor base 5；Additionally soft magnetism iron plate 9 also is able to effectively strengthen the area in the yoke portion of stator core 3 near the part that the end face of motor base 5 is turned up, thus reducing the magnetic resistance of iron core 3 magnetic circuit, effectively improves the electromagnetic property of motor.
Concrete, the length direction of described flanging 6 and described soft magnetism iron plate 9 is vertically arranged.Can improve to greatest extent and the contact area of rotor magnetic steel 2, or with the fixed-area of motor base 5.
Concrete, the height of described flanging 6 is 0.1 times～1.5 times of the thickness of the end of winding 4.Adopting the flanging of this parameter, be easiest to processing, efficiency is preferably also.
The described stamped molding of flanging 6.
The described flanging 6 being arranged at soft magnetism iron plate 9 one end towards described rotor magnetic steel 2, is arranged at that the flanging 6 of soft magnetism iron plate 9 other end is fixing with described motor base 5 to be connected.
Embodiment 2
Itself and embodiment 1 are distinctive in that:
As shown in Figure 11, Figure 12, a kind of slim permagnetic synchronous motor with radial magnetic field, including rotor rim 1, rotor magnetic steel 2, motor base 5 and stator, described rotor rim 1 is fixed on motor base 5, being provided with rotor magnetic steel 2 in described rotor rim 1, described stator is fixed on described motor base 5；Iron core includes two soft magnetism iron plates 9 and at least one of which iron plate 10, iron plate 10 described at least one of which is arranged between said two soft magnetism iron plate 9, two soft magnetism iron plates 9 and iron plate described at least one of which 10 repeatedly dress, the two ends of the length direction of two described soft magnetism iron plates 9 are respectively arranged with flanging 6, and the end face edge through-thickness that described flanging 6 is soft magnetism iron plate 9 outwards turns up formation.
Two soft magnetism iron plates 9 and iron plate 10 repeatedly dress, the two ends of two soft magnetism iron plates 9 are respectively arranged with flanging 6, and the end face edge through-thickness that described flanging 6 is soft magnetism iron plate 9 turns up formation laterally.
Embodiment 3
Itself and embodiment 1 are distinctive in that:
A kind of slim permagnetic synchronous motor with radial magnetic field, including rotor rim 1, rotor magnetic steel 2, motor base 5 and stator, described stator is arranged in rotor rim 1, described rotor rim 1 is fixed on motor base 5, being provided with rotor magnetic steel 2 in described rotor rim 1, described stator is fixed on described motor base 5；Described iron core includes soft magnetism iron plate 9 and iron plate 10, described soft magnetism iron plate 9 and described at least a piece of iron plate 10 closed assembly, at least one end of the length direction of described soft magnetism iron plate 9 is provided with flanging 6, and the end face edge through-thickness that described flanging 6 is soft magnetism iron plate 9 turns up formation to away from iron plate 10 1 side
As shown in figure 13, the two ends of the length direction of the soft magnetism iron plate 9 of this embodiment are both provided with flanging 6, and the flanging 6 that one end is arranged is towards rotor magnetic steel 2, and the other end is provided with flanging 6, fix with motor base 5 and are connected.
Above-mentioned stator structure, it is also possible to develop into other form to coordinate different thin electric motor structures.
Embodiment 4
Itself and embodiment 1 are distinctive in that:
A kind of slim permagnetic synchronous motor with radial magnetic field, including rotor rim 1, rotor magnetic steel 2, motor base 5 and stator, described stator is arranged in rotor rim 1, described rotor rim 1 is fixed on motor base 5, being provided with rotor magnetic steel 2 in described rotor rim 1, described stator is fixed on described motor base 5；Described iron core includes two soft magnetism iron plate 9 closed assemblies, and the two ends of the length direction of two described soft magnetism iron plates 9 are respectively arranged with flanging 6, and the end face edge through-thickness that described flanging 6 is soft magnetism iron plate 9 turns up formation laterally.
As shown in figure 14, the two ends of two soft magnetism iron plates 9 are respectively arranged with flanging 6, and the end face edge through-thickness that described flanging 6 is soft magnetism iron plate 9 turns up formation laterally
Electric machine structure disclosed in this invention, it is adaptable to the motor of single-phase, three-phase and other numbers of phases.Although the motor introduced in figure is external rotor electric machine, but this iron core 3 structure is easy to develop into the structure of internal rotor.
Finally should be noted that; above example is only in order to illustrate technical scheme but not limiting the scope of the invention; although the present invention being explained in detail with reference to preferred embodiment; it will be understood by those within the art that; technical scheme can be modified or equivalent replacement, without deviating from the spirit and scope of technical solution of the present invention.
Claims (9)
1. the stator for slim permagnetic synchronous motor, it is characterized in that: stator includes iron core and is set around the winding of iron core, described iron core includes at least one stator chip, and at least one end of the length direction of described stator chip is provided with end face edge through-thickness and turns up the flanging of formation.
2. a kind of stator for slim permagnetic synchronous motor according to claim 1, it is characterised in that: the length direction of described flanging and described soft magnetism iron plate is vertically arranged.
3. a kind of stator for slim permagnetic synchronous motor according to claim 1, it is characterised in that: the height of described flanging is 0.1 times～1.5 times of the thickness of the end of winding.
4. a kind of stator for slim permagnetic synchronous motor according to any one of claims 1 to 3, it is characterized in that: described stator chip includes soft magnetism iron plate and iron plate, described soft magnetism iron plate and described iron plate closed assembly, at least one end of the length direction of described soft magnetism iron plate is provided with flanging, and the end face edge through-thickness that described flanging is soft magnetism iron plate turns up formation to away from iron plate one side.
5. a kind of stator for slim permagnetic synchronous motor according to any one of claims 1 to 3, it is characterized in that: described stator chip includes two soft magnetism iron plates, two described soft magnetism iron plate closed assemblies connect, the two ends in the radical length direction of two described soft magnetism iron plates are respectively arranged with turns up, described in turn up the end face edge through-thickness for soft magnetism iron plate and outwards turn up formation.
6. a kind of stator for slim permagnetic synchronous motor according to any one of claims 1 to 3, it is characterized in that: described stator chip includes two soft magnetism iron plates and at least one of which iron plate, iron plate described at least one of which is arranged between said two soft magnetism iron plate, two soft magnetism iron plates and the repeatedly dress of iron plate described at least one of which, the both ends of the surface in the radical length direction of two described soft magnetism iron plates are respectively arranged with to be turned up, described in turn up the end face edge through-thickness for soft magnetism iron plate and outwards turn up formation.
7. a kind of stator for slim permagnetic synchronous motor according to claim 1, it is characterised in that: the stamped molding of flanging of described soft magnetism iron plate.
8. a slim permagnetic synchronous motor with radial magnetic field, it is characterized in that: include rotor rim, rotor magnetic steel, motor base and the stator as described in claim 1 to 7 any one, described rotor rim is fixed on motor base, it is provided with rotor magnetic steel in described rotor rim, described motor base is fixed in one end of described stator, and the other end of described stator is arranged in described rotor rim.
9. a kind of slim permagnetic synchronous motor with radial magnetic field according to claim 8, it is characterized in that: described in be arranged at stator chip one end turn up towards described rotor magnetic steel, what be arranged at the stator chip other end turns up be connected fixing with described motor base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410843673.3A CN105811701A (en) | 2014-12-30 | 2014-12-30 | Stator applied to thin type PMSM and motor provided with stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410843673.3A CN105811701A (en) | 2014-12-30 | 2014-12-30 | Stator applied to thin type PMSM and motor provided with stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105811701A true CN105811701A (en) | 2016-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410843673.3A Pending CN105811701A (en) | 2014-12-30 | 2014-12-30 | Stator applied to thin type PMSM and motor provided with stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105811701A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11299133A (en) * | 1998-04-16 | 1999-10-29 | Tokyo Parts Ind Co Ltd | Core for cored motor |
| US6326711B1 (en) * | 1999-09-07 | 2001-12-04 | Tokyo Parts Industrial Co., Ltd. | DC brushless motor having eccentric rotor |
| US20050082919A1 (en) * | 2001-02-01 | 2005-04-21 | Encap Motor Corporation | Motor with stator made from linear core preform |
| CN101951040A (en) * | 2009-07-07 | 2011-01-19 | 松下电器产业株式会社 | Motor and the electronic equipment that has used this motor |
| JP5352982B2 (en) * | 2007-10-09 | 2013-11-27 | パナソニック株式会社 | Motor and electronic equipment using it |
| CN204304746U (en) * | 2014-12-30 | 2015-04-29 | 峰岹科技（深圳）有限公司 | A kind of stator for ultrathin permagnetic synchronous motor and apply the motor of this stator |
| CN204517514U (en) * | 2014-12-30 | 2015-07-29 | 峰岹科技（深圳）有限公司 | A kind of stator for slim permagnetic synchronous motor and apply the motor of this stator |
| CN204615604U (en) * | 2014-12-30 | 2015-09-02 | 峰岹科技（深圳）有限公司 | A kind of stator for slim permagnetic synchronous motor and motor |
| CN204835726U (en) * | 2014-12-30 | 2015-12-02 | 峰岹科技（深圳）有限公司 | A motor that is used for slim PMSM's stator and uses this stator |
-
2014
- 2014-12-30 CN CN201410843673.3A patent/CN105811701A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11299133A (en) * | 1998-04-16 | 1999-10-29 | Tokyo Parts Ind Co Ltd | Core for cored motor |
| US6326711B1 (en) * | 1999-09-07 | 2001-12-04 | Tokyo Parts Industrial Co., Ltd. | DC brushless motor having eccentric rotor |
| US20050082919A1 (en) * | 2001-02-01 | 2005-04-21 | Encap Motor Corporation | Motor with stator made from linear core preform |
| JP5352982B2 (en) * | 2007-10-09 | 2013-11-27 | パナソニック株式会社 | Motor and electronic equipment using it |
| CN101951040A (en) * | 2009-07-07 | 2011-01-19 | 松下电器产业株式会社 | Motor and the electronic equipment that has used this motor |
| CN204304746U (en) * | 2014-12-30 | 2015-04-29 | 峰岹科技（深圳）有限公司 | A kind of stator for ultrathin permagnetic synchronous motor and apply the motor of this stator |
| CN204517514U (en) * | 2014-12-30 | 2015-07-29 | 峰岹科技（深圳）有限公司 | A kind of stator for slim permagnetic synchronous motor and apply the motor of this stator |
| CN204615604U (en) * | 2014-12-30 | 2015-09-02 | 峰岹科技（深圳）有限公司 | A kind of stator for slim permagnetic synchronous motor and motor |
| CN204835726U (en) * | 2014-12-30 | 2015-12-02 | 峰岹科技（深圳）有限公司 | A motor that is used for slim PMSM's stator and uses this stator |
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Application publication date: 20160727 |
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