CN203522484U - Permanent-magnet wheel hub motor structure - Google Patents
Permanent-magnet wheel hub motor structure Download PDFInfo
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- CN203522484U CN203522484U CN201320563012.6U CN201320563012U CN203522484U CN 203522484 U CN203522484 U CN 203522484U CN 201320563012 U CN201320563012 U CN 201320563012U CN 203522484 U CN203522484 U CN 203522484U
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Abstract
The utility model provides a permanent-magnet wheel hub motor structure applied to the technical field of new energy automobiles. According to the utility model, a motor rotor is arranged on the outer ring of a motor stator. The motor rotor includes a rotor casing (5), a casing rear end cover (4), a casing front end cover (6) and a brake drum (9). The rotor casing (5), the casing rear end cover (4), the casing front end cover (6) and the brake drum (9) are in an integral structure. A motor shaft (1) is installed in the motor stator fixedly. A permanent magnet (3) is installed on the outer ring of the motor stator. A stator iron core assembly (8) and a stator armature winding (7) are installed on the outer ring of the permanent magnet (3) fixedly. The permanent magnet (3) is a Halbach array. According to the utility model, rare earth permanent magnet material of the Halbach array is introduced, so that power density of the wheel hub motor structure is increased, electromagnetic noise is reduced, smooth speed regulation is realized and using efficiency is improved.
Description
Technical field
The utility model belongs to new-energy automobile technical field, more particularly, relates to the permanent magnetism hub motor structure that a kind of new-energy automobile drives use.
Background technology
Halbach arrayed applications has the following advantages in motor tool: (1) power density is large, with respect to common magnet structure, because tangential magnetic field after decomposing of Halbach row and the overlapped magnetic flux density of air gap that makes of radial magnetic field increase substantially, can effectively reduce the volume of motor, improve the power density of motor.(2) stator and rotor no longer need skewed slot.In Halbach row motor, due to air-gap field Sine distribution, harmonic content is little, and stator and rotor are without skewed slot.(3) Halbach row self-shielding effect, for the Halbach motor of external magnetic field, rotor can adopt non-core material; For the Halbach motor of internal magnetic field, housing does not need permeability magnetic material, even can not need shell, to alleviate the volume weight of motor.And make motor have lower moment of inertia.(4) permanent magnet utilization ratio is high.Because Halbach row divide to magnetized result, cause its Operating Point of Permanent Magnet higher, generally all over 0.9, improved the utilance of permanent magnet.(5) can use centralized winding.In Halbach row motor, because its magnetic field sine distributes, harmonic field is less, can adopt centralized winding to improve electric conducting material utilance.
Doubly salient permanent magnet motor (Doubly salient permanent magnet motor is called for short DSPM) is a kind of novel Alternating Current Governor System occurring in the nineties in last century along with power electronics and microelectronic development.This system is comprised of doubly salient permanent magnet motor, power inverter, position transducer and controller four parts.Electric machine rotor construction profile is similar to switched reluctance machines, is double-salient-pole structure, but it is placed with permanent magnet on rotor (or stator), thereby makes operation logic and control strategy and switched reluctance machines have essential distinction.The major advantage of DSPM system be simple in structure, control flexibly, dynamic response is fast, good speed adjustment features, torque/current ratio are large, can realize various specific (special) requirements torque rotary speed property, power factor is close to 1, efficiency is high, is electrician's subject another brand-new research direction after switched reluctance machines in recent years.
DSPM motor can be described as the organic combination of reluctance motor and magneto; it is the creative development of switched reluctance machines; it combines both advantages; both part defects have been solved again; three of switched reluctance machines defects particularly: (1) is because main switch must turn-off at inductance larger part; electric current commutation is slower, thereby has reduced torque output; (2) in order to increase saturation, to improve switched reluctance machines, exert oneself, between rotor, air gap is less, therefore will produce noise and vibration problem; (3) switched reluctance machines can only be exerted oneself in half cycle, when positive half cycle inductance increases, produces electronic torque, and negative half period inductance produces brake torque while reducing, and stock utilization is low.At present, applying more is stator permanent magnetic type doubly salient permanent magnet motor, it is divided into again cutting orientation structure and radial structure, but and the motor comparison of Halbach array, obvious Shortcomings in structure: the outside leakage field of cutting orientation structure permanent magnet is larger, radial structure must have stator magnetic conduction casing, and the air gap flux density that has limited motor improves, and power-weight ratio is lower.
Utility model content
Technical problem to be solved in the utility model is: for the deficiencies in the prior art, provide a kind of leakage field few, air gap flux density is high, the high and simple permanent magnetism hub motor structure of technique of power density.
Solve above-described technical problem, the technical scheme that the utility model is taked is:
The utility model is a kind of permanent magnetism hub motor structure, comprise rotor, motor stator outer ring arranges rotor, rotor comprises rotor casing, casing rear end lid, casing front end housing, brake drum, rotor casing, casing rear end lid, casing front end housing, brake drum are integral type structure, fixed installation motor shaft in motor stator, permanent magnet is installed in motor stator outer ring, permanent magnet outer ring fixed installation stator core assembly and stator armature winding, permanent magnet is Halbach array, and brake drum is fixedly connected with tire wheel hub.
Preferably, the outer ring of described stator core assembly arranges a plurality of stator salient poles, electronics rotor inner ring arranges rotor core, a plurality of rotor with salient pole are set on rotor core inwall, on stator core assembly, by gap, a plurality of pack clearances are set, in groove between every two stator salient poles, a stator armature winding is installed respectively, permanent magnet is set to the structure of arranging for a week along electronics stator.
Preferably, described motor stator outer ring arranges permanent magnet support, and permanent magnet is arranged on permanent magnet support, described permanent magnetism wheel hub motor is three phase electric machine or polyphase machine, and when permanent magnetism wheel hub motor is polyphase machine, permanent magnetism wheel hub motor is 6K/4K structure, K is integer, K=1,2,3 ...
Preferably, between described brake drum and motor shaft, by bearing, be flexibly connected, on motor stator, be also provided with brake-shoe fixed disk, between brake-shoe fixed disk and motor shaft, be fixedly connected with.
Preferably, described a plurality of wheel bolts of brake drum arranged outside, tire wheel hub is connected with brake drum by wheel bolt, and described stator permanent magnet body support frame adopts magnetic conduction or non-magnet material to be made.
Adopt the technical solution of the utility model, can obtain following beneficial effect:
Permanent magnetism hub motor structure of the present utility model, has introduced the rare-earth permanent magnet material of Halbach array, has improved the power density of hub motor structure, has reduced electromagnetic noise, realizes stepless speed control, improves service efficiency.Its major advantage has: 1) simple in structure firmly electronics rotor is without winding, and just punching silicon-steel is overrided to form, and concentrates the permanent magnet of armature winding and Halbach array distribution on motor stator; 2) outer-rotor structure, without reducing gear, can conveniently directly be fixed on tire wheel hub on body fuselage, only need assembling-disassembling bolt just can, conveniently change tire maintenance; 3) moment/electric current is large: during startup, only need 30% left and right of rated current just can obtain 10-150% rated moment; 4) efficiency is high: in very wide velocity interval, its efficiency >=85%, reaches as high as more than 90%; 5) without starting dead angle: 24/16 utmost point, and rotor pole arc equals stator polar arc, and optional position all can start: 6) noise is low, and torque pulsation is little; 7) electric current can be realized quick commutation easily, and owing to introducing permanent magnet, making has forward torque to produce in rising area and the decline district of magnetic linkage, has improved efficiency and stock utilization; 8) technique advantages of simple, motor internal has merged skidding drum, facilitates vehicle to install.
Accompanying drawing explanation
The expressed content of each accompanying drawing of this specification and the mark in figure are made to brief description below:
Fig. 1 is the sectional structure schematic diagram of permanent magnetism hub motor structure described in the utility model;
Fig. 2 is the external structure schematic diagram of permanent magnetism hub motor structure described in the utility model;
Fig. 3 is the theory structure schematic diagram of permanent magnet motor structure of the present invention;
Fig. 4 is the Halbach array schematic diagram of the resultant magnetic field of permanent magnet of the present invention;
Fig. 5 is the Halbach array schematic diagram of the external magnetic field of permanent magnet of the present invention;
Fig. 6 is the Halbach array schematic diagram of the internal magnetic field of permanent magnet of the present invention;
Accompanying drawing acceptance of the bid note is respectively: 1, motor shaft; 2, permanent magnet support; 3, permanent magnet; 4, rear end cap; 5, rotor casing; 6, front end housing; 7, stator armature winding; 8, stator core assembly; 9, brake drum; 10, wheel bolt; 11, brake-shoe fixed disk; 12, bearing; 13, stator salient poles; 14, rotor with salient pole; 15, pack clearance; 16, rotor core.
Embodiment
Contrast accompanying drawing below, by the description to embodiment, embodiment of the present utility model is described in further detail as the effect of the mutual alignment between the shape of each related member, structure, each several part and annexation, each several part and operation principle etc.:
As shown in accompanying drawing 1-accompanying drawing 6, the utility model is a kind of permanent magnetism hub motor structure, comprise rotor, motor stator outer ring arranges rotor, described rotor comprises rotor casing 5, casing rear end lid 4, casing front end housing 6, brake drum 9, rotor casing 5, casing rear end lid 4, casing front end housing 6, brake drum 9 is integral type structure, fixed installation motor shaft 1 in motor stator, permanent magnet 3 is installed in motor stator outer ring, permanent magnet 3 outer ring fixed installation stator core assembly 8 and stator armature windings 7, permanent magnet 3 is Halbach array, brake drum 9 is fixedly connected with tire wheel hub.
Preferably, the outer ring of described stator core assembly 8 arranges a plurality of stator salient poles 13, electronics rotor inner ring arranges rotor core 16, a plurality of rotor with salient pole 14 are set on rotor core 16 inwalls, on stator core assembly 8, by gap, a plurality of pack clearances 15 are set, in groove between every two stator salient poles 13, a stator armature winding 7 is installed respectively, permanent magnet 3 is set to the structure of arranging for a week along electronics stator.
Preferably, described motor stator outer ring arranges permanent magnet support 2, and permanent magnet 3 is arranged on permanent magnet support 2, described permanent magnetism wheel hub motor is three phase electric machine or polyphase machine, and when permanent magnetism wheel hub motor is polyphase machine, permanent magnetism wheel hub motor is 6K/4K structure, K is integer, K=1,2,3 ...
Preferably, between described brake drum 9 and motor shaft 1, by bearing 12, be flexibly connected, on motor stator, be also provided with brake-shoe fixed disk 11, between brake-shoe fixed disk 11 and motor shaft 1, be fixedly connected with.
Preferably, described a plurality of wheel bolts 10 of brake drum 9 arranged outside, tire wheel hub is connected with brake drum 9 by wheel bolt 10, and stator permanent magnet body support frame 2 adopts magnetic conduction or non-magnet material to be made.
In permanent magnetism hub motor structure described in the utility model, comprise rotor and motor stator, motor shaft 1 periphery is fixed with stator permanent magnet body support frame 2, around stator permanent magnet body support frame 2, be set to permanent magnet 3, and fixedly become stator one with the stator core assembly 8 and the stator armature winding 7 that are arranged on permanent magnet 3 peripheries.Motor stator periphery is electronics rotor, rotor casing 5, casing rear end lid 4, casing front end housing 6, brake drum 9 are integral type structure, brake drum 9 is provided with four wheel bolts 10, direct mounting tyre wheel hub, and there is bearing 12 to be connected between the brake drum 9 rotating and motor shaft, and brake-shoe fixed disk 11 use axle keys and motor shaft 1 are fixed into one, do not rotate, thereby can reach braking effect.Described permanent magnet 3 is Halbach array, and stator core assembly 8 and rotor casing 5 are salient pole type structure, and wherein rotor casing 5 is electronics rotor, without winding, has stator armature winding 7 on stator core assembly 8.
Described permanent magnetism hub motor structure can be three phase electric machine, can be also polyphase machine, when electric machine structure is three phase electric machine, is 6K/4K structure, and K is integer, K=1,2,3 ...When K=2, it is 12/8 structure, be that stator core is 12 teeth, rotor core is 8 teeth, accompanying drawing 3 be exactly the present invention adopt K=5 time external rotor double salient pole permanent magnet motor principle assumption diagram, be 30/20 structure, for three-phase or when heterogeneous, stator number of teeth Ns, the rotor number of teeth Nr of motor are satisfied equally: Ns/Nr=2mK/ (Ns ± 2K), and the number of phases that wherein m is motor, K is positive integer.Its stator teeth groove is uniformly distributed in stator core, and its stator facewidth equals stator groove width, and rotor teeth groove is to be uniformly distributed in rotor core equally, and general rotor tooth is wider than or equals the stator facewidth, thereby guarantees electric current commutation torque pulsation inhibited.
Permanent magnetism hub motor structure of the present utility model, introduced the rare-earth permanent magnet material of Halbach array, its major advantage has: 1) simple in structure firm, electronics rotor is without winding, just punching silicon-steel is overrided to form, and concentrates the permanent magnet of armature winding and Halbach array distribution on motor stator; 2) outer-rotor structure, without reducing gear, can conveniently directly be fixed on tire wheel hub on body fuselage, only need assembling-disassembling bolt just can, conveniently change tire maintenance; 3) moment/electric current is large: during startup, only need 30% left and right of rated current just can obtain 10-150% rated moment; 4) efficiency is high: in very wide velocity interval, its efficiency >=85%, reaches as high as more than 90%; 5) without starting dead angle: 24/16 utmost point, and rotor pole arc equals stator polar arc, and optional position all can start: 6) noise is low, and torque pulsation is little; 7) electric current can be realized quick commutation easily, and owing to introducing permanent magnet, making has forward torque to produce in rising area and the decline district of magnetic linkage, has improved efficiency and stock utilization; 8) motor internal has merged skidding drum, facilitates vehicle to install.
By reference to the accompanying drawings the utility model has been carried out to exemplary description above; obviously the concrete realization of the utility model is not subject to the restrictions described above; as long as the various improvement that adopted method design of the present utility model and technical scheme to carry out; or without improving, design of the present utility model and technical scheme are directly applied to other occasions, all in protection range of the present utility model.
Claims (5)
1. a permanent magnetism hub motor structure, comprise rotor, motor stator outer ring arranges rotor, it is characterized in that: described rotor comprises rotor casing (5), casing rear end lid (4), casing front end housing (6), brake drum (9), rotor casing (5), casing rear end lid (4), casing front end housing (6), brake drum (9) is integral type structure, fixed installation motor shaft (1) in motor stator, permanent magnet (3) is installed in motor stator outer ring, permanent magnet (3) outer ring fixed installation stator core assembly (8) and stator armature winding (7), permanent magnet (3) is Halbach array, brake drum (9) is fixedly connected with tire wheel hub.
2. permanent magnetism hub motor structure according to claim 1, it is characterized in that: the outer ring of described stator core assembly (8) arranges a plurality of stator salient poles (13), electronics rotor inner ring arranges rotor core (16), on rotor core (16) inwall, a plurality of rotor with salient pole (14) are set, stator core assembly (8) is upper arranges a plurality of pack clearances (15) by gap, a stator armature winding (7) is installed respectively in the groove between every two stator salient poles (13), and permanent magnet (3) is set to the structure of arranging for a week along electronics stator.
3. permanent magnetism hub motor structure according to claim 1 and 2, it is characterized in that: described motor stator outer ring arranges permanent magnet support (2), permanent magnet (3) is arranged on permanent magnet support (2), described permanent magnetism wheel hub motor is three phase electric machine or polyphase machine, when permanent magnetism wheel hub motor is polyphase machine, permanent magnetism wheel hub motor is 6K/4K structure, and K is integer, K=1,2,3 ...
4. permanent magnetism hub motor structure according to claim 3, it is characterized in that: between described brake drum (9) and motor shaft (1), by bearing (12), be flexibly connected, on motor stator, be also provided with brake-shoe fixed disk (11), between brake-shoe fixed disk (11) and motor shaft (1), be fixedly connected with.
5. permanent magnetism hub motor structure according to claim 4, it is characterized in that: a plurality of wheel bolts of described brake drum (9) arranged outside (10), tire wheel hub is connected with brake drum (9) by wheel bolt (10), and described stator permanent magnet body support frame (2) adopts magnetic conduction or non-magnet material to be made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320563012.6U CN203522484U (en) | 2013-09-11 | 2013-09-11 | Permanent-magnet wheel hub motor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320563012.6U CN203522484U (en) | 2013-09-11 | 2013-09-11 | Permanent-magnet wheel hub motor structure |
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| Publication Number | Publication Date |
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| CN203522484U true CN203522484U (en) | 2014-04-02 |
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| CN201320563012.6U Expired - Fee Related CN203522484U (en) | 2013-09-11 | 2013-09-11 | Permanent-magnet wheel hub motor structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104354585A (en) * | 2014-11-13 | 2015-02-18 | 江苏浩元动力科技有限公司 | Electric automobile rear driving device based on three-phase doubly salient external rotor permanent magnet motor |
| CN108092480A (en) * | 2018-01-11 | 2018-05-29 | 南方科技大学 | Permanent magnet motor |
| CN111917203A (en) * | 2019-05-08 | 2020-11-10 | 劳斯莱斯有限公司 | Electric machine |
-
2013
- 2013-09-11 CN CN201320563012.6U patent/CN203522484U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104354585A (en) * | 2014-11-13 | 2015-02-18 | 江苏浩元动力科技有限公司 | Electric automobile rear driving device based on three-phase doubly salient external rotor permanent magnet motor |
| CN108092480A (en) * | 2018-01-11 | 2018-05-29 | 南方科技大学 | Permanent magnet motor |
| CN108092480B (en) * | 2018-01-11 | 2024-04-23 | 南方科技大学 | Permanent magnet motor |
| CN111917203A (en) * | 2019-05-08 | 2020-11-10 | 劳斯莱斯有限公司 | Electric machine |
| CN111917203B (en) * | 2019-05-08 | 2023-05-12 | 劳斯莱斯有限公司 | Motor with a motor housing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151021 Address after: 321301 No. 9 Beihu Road, Yongkang Economic Development Zone, Zhejiang, China Patentee after: Zhejiang Zhongtai Automobile Manufacturing Co., Ltd. Address before: 321301 Yongkang City, Jinhua Province Hardware Science and Technology Industrial Park, North Lake Road, No. 1 Patentee before: Zotye Holding Group Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20200911 |