CN103904791A - High-power efficient motor used for electric vehicle - Google Patents
High-power efficient motor used for electric vehicle Download PDFInfo
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- CN103904791A CN103904791A CN201410110994.2A CN201410110994A CN103904791A CN 103904791 A CN103904791 A CN 103904791A CN 201410110994 A CN201410110994 A CN 201410110994A CN 103904791 A CN103904791 A CN 103904791A
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The invention relates to a high-power efficient motor used for an electric vehicle. The high-power efficient motor comprises a stator and a rotor, wherein the stator comprises a plurality of silicon steel sheets formed in a stamping and stacking mode, large pear-shaped stator tooth grooves are arranged in the silicon steel sheets, and stator windings are arranged in the large pear-shaped stator tooth grooves; the rotor is arranged on the outside of the stator and comprises a rotor rim and a plurality of concentric tile-shaped magnetic steel sheets attached to the inner side of the rotor rim in an adhesive mode, and air gaps are formed between the magnetic steel sheets and the silicon steel sheets. The motor has the advantages of high performance, a high material utilization rate and low magnetic energy loss; on the basis that the rotor guarantees that the performance of the motor meets work requirements, the quantity of magnetic steel sheet rare earth materials which are used is generally lower than that of a motor of the same specification; the groove model of the steel sheets is suitable for various pole-slot ratios and line insertion schemes, and the rotation speed and the power span are large.
Description
Technical field
The present invention relates to the technical field of motor, more particularly, the present invention relates to a kind of electric vehicle large power high efficiency motor.
Background technology
Stator and rotor are the core parts of motor, according to electromagnetic principle, are produced and are revolved varying magnetic field by hot-wire coil, form unbalanced magnetic field moment, make motor produce directional-rotation.And the stock utilization that is related to motor whether rational in infrastructure between stator and rotor, the magnetic Circuit Design of stator grooved rationally can improve motor power conversion using rate greatly.Accurate electric machine rotor structure can realize guaranteeing, under the prerequisite of motor acceptable performance, to effectively reduce the various losses of motor, as air gap loss, iron loss, copper loss etc., reduces the waste of rare earth material ferro-aluminum canopy (magnet steel) and stator silicon steel sheet simultaneously.And magnetic Circuit Design relates to the design of motor stator coil grooved, reasonably magnetic circuit reduces the magnetic energy loss of teeth groove yoke portion greatly, greatly improves magnetic flux, improves motor-field waveform, in essence lifting motor performance.Current man of electrical machinery plant motor physical dimension, teeth groove design is each variant, and it is low that electric efficiency point has height to have, under the unified prerequisite of overall structure size, rare earth material utilance is generally not high, limited by physical dimension, power of motor is generally not high, and motor stator bearing capacity is not strong, once run into climbing road conditions, motor easily generates heat, and electric current greatly strengthens and exceedes stator coil limit and burn out motor, and motor output torque does not reach requirement etc.Therefore, study the magnetic Circuit Design of stator and rotor sructure and the optimization motor performance of heavy-duty motor, contribute to overcome the deficiency of these aspects of motor.
Summary of the invention
In order to solve, the motor material utilance existing in prior art is not high, underpower and the technical problem such as moment is inadequate, the object of the present invention is to provide the electric vehicle large power high efficiency motor of a kind of high-performance, high stock utilization and low magnetic energy loss.
In order to solve the described technical problem of invention and to realize goal of the invention, the technical solution used in the present invention is as follows:
A kind of electric vehicle large power high efficiency motor, comprise stator and rotor, it is characterized in that: described stator comprises the silicon steel sheet being formed by stacking by multiple mutual punching presses, in described silicon steel sheet, be provided with the stator teeth groove of large pyriform, in the stator teeth groove of described large pyriform, be provided with stator winding; Described rotor is arranged on the outside of described stator, and described rotor comprises rotor wheel rim, and is bonded in the multiple concentric machine fro of described rotor wheel rim inner side, and forms air gap between described magnetic links and described silicon steel sheet.
Wherein, on described silicon steel sheet, be reserved with Hull cell, in described Hull cell, be placed with Hall element.
Wherein, the number of described concentric machine fro is 32, and described 32 concentric machine fro are uniformly distributed according to N-S-N-S mode, forms 16 pairs of magnetic fields; The number of described stator teeth groove is 36, and 72 winding coils of corresponding motor three phase windings are between two according to the order of connection with in 36 stator teeth groove that put in order described in being placed on.
Compared with immediate prior art, electric vehicle large power high efficiency motor of the present invention has following beneficial effect:
Motor of the present invention, rotor is wherein guaranteeing that motor performance meets on the basis of work requirements, magnetic links rare earth material dosage is generally lower than same specification motor; And stator grooved changes large peariform slot into, can utilize as far as possible silicon steel material, innovation stator grooved, optimizes magnetic circuit and distributes, and the applicable multiple utmost point groove proportioning of steel disc grooved and rule scheme, and rotating speed and power span are larger.
Accompanying drawing explanation
Fig. 1 is the structure diagram of the electric vehicle large power high efficiency motor described in embodiment 1.
Fig. 2 is the rule structural representation of the motor described in embodiment 1.
Fig. 3 is the structural representation of the electric vehicle large power high efficiency motor (disc brake motor) described in embodiment 1.
Embodiment
Below with reference to specific embodiment, electric vehicle large power high efficiency motor of the present invention is further elaborated, to help those skilled in the art to have more complete, accurate and deep understanding to inventive concept of the present invention, technical scheme; It is to be noted that the description of related structure in embodiment, function and material etc. is all exemplary, and do not refer to the restriction to invention protection range.
Embodiment 1
As shown in Figure 1, electric vehicle large power high efficiency motor, comprises stator 10 and rotor 20; Described stator 10 comprises the silicon steel sheet 11 being formed by stacking by multiple mutual punching presses, is provided with the stator teeth groove 12 of large pyriform in described silicon steel sheet 11, in the stator teeth groove 12 of described large pyriform, is provided with stator winding (not shown); Described rotor 20 is arranged on the outside of described stator, and described rotor comprises rotor wheel rim 21, and is bonded in the multiple concentric machine fro 22 of described rotor wheel rim inner side, and forms air gap 30 between described magnetic links 22 and described silicon steel sheet 11; On described silicon steel sheet 11, be reserved with Hull cell 13, in described Hull cell, be placed with Hall element (not shown).As shown in Figure 2, the number of described concentric machine fro is 32, and described 32 concentric machine fro are uniformly distributed according to N-S-N-S mode, forms 16 pairs of magnetic fields; The number of described stator teeth groove is 36, and 72 winding coils of corresponding motor three phase windings are between two according to the order of connection with in 36 stator teeth groove that put in order described in being placed on.As shown in Figure 3, as a concrete example, Fig. 3 shows the example of the present embodiment as the disc brake motor rubbing greatly.Motor described in the present embodiment, described rotor is guaranteeing that motor performance meets on the basis of work requirements, magnetic links rare earth material dosage is generally lower than same specification motor; And stator grooved changes large peariform slot into, can utilize as far as possible silicon steel material, innovation stator grooved, optimizes magnetic circuit and distributes, and the applicable multiple utmost point groove proportioning of steel disc grooved and rule scheme, and rotating speed and power span are larger.
In the present embodiment, in order to reduce the various losses that caused by described stator silicon steel sheet, for example magnetic hysteresis loss, eddy current loss, need described silicon steel sheet surface-coated insulating coating, and because the stack of silicon steel sheet is more, require coating to there is stronger resistance to suppressing and creep resisting ability; Need in addition to there is excellent punching, weldability tack etc., to make silicon steel sheet there is higher interface resistance rate, make silicon steel sheet interlayer power loss reduce to minimum.The thickness of the insulating coating of described silicon steel sheet surface-coated is 1.5～2.5 μ m, and described silicon steel sheet is through the pre-treatment of oil removing, alkali cleaning, acid etching and washing; Then roller coat coatings, curing temperature is 250～280 ℃, the time of staying is 120～180 seconds; Described coatings obtains after being mixed by following raw material: described raw material comprises: phosphonate group compound and/or its salt, tripolyphosphate zinc-aluminium, boric acid, the KR-240 methyl silicon resin that solids content is 25wt%, and waterborne film-forming auxiliary agent alternatively; Wherein, with respect to the water of 100 weight portions, the content of described phosphonate group compound and/or its salt is 3.2～5.0 weight portions, the content of described tripolyphosphate zinc-aluminium is 3.8～5.0 weight portions, the content of boric acid is 1.2～1.8 weight portions, described solids content is that the content of the KR-240 methyl silicon resin (Japanese SHIN-ETSU HANTOTAI) of 25wt% is 8.0～12.0 weight portions, and the content of described waterborne film-forming auxiliary agent is 0～5 weight portion.Wherein, have in more than 2 phosphonate group and molecule containing ester bond in the molecule of described phosphonate group compound and/or its salt, as preferably, it is ATMP or diethylenetriamine pentamethylene phosphonic acids.Described waterborne film-forming auxiliary agent refers to one or more in defoamer, dispersant, levelling agent and thickener.
According to the listed constituent content of table 1, each component is mixed under stirring condition, obtain the coatings described in A1-A6 and B1-B6; First to the oil removing of silicon steel sheet to be coated (non-oriented silicon steel sheet) process, alkali cleaning, acid etching and washing processing; Then the above-mentioned coatings of roller coat, curing temperature is 280 ℃, be 120 seconds curing time, obtains the coatings of silicon steel sheet sample C1-C6(use A1-A6); Coatings with silicon steel sheet duplicate D1-D6(use B1-B6).
The thickness of said sample is measured according to the method for GB1767; Thermal endurance is tested according to the method for GB1735.Interface resistance is according to testing according to the standard of GB/T2522-2007 with adhesive force, wherein adhesive force by by force to a little less than be divided into A-F level.Corrosion resistance is carried out corrosion test according to method and the condition of GB/T10125-1997 regulation, then according to the regulation of GB12335-90, Corrosion results is evaluated to (percentage that the corroded area of 8 hours accounts for the gross area represents).Creep resistant characteristic is to keep the shrinkage after 48 hours to represent under the condition of 150 ℃ and 2MPa.The test result of thermal endurance, interface resistance, adhesive force, corrosion resistance and the creep-resistant property (shrinkage) of described sample is as shown in table 2.
The composition (Unit Weight part) of table 1 coatings
Table 2
Compared with the sample of C1-C6 and D1-D6, by the synergy of phosphonate group compound and boric acid, compare with traditional phosphoric acid and the paint coatings of dihydric phosphate, not only improve significantly adhesive force and insulation property between stator silicon steel sheet; And unexpected, thermal endurance and the creep-resistant property of coating are also improved; Thereby can change described stator slot into large peariform slot, effectively reduce the various losses of motor, compared with the motor of same specification, thereby can reduce the use amount of magnet steel (neodymium iron boron) material; And described silicon steel grooved is applicable to multiple utmost point groove proportioning and rule scheme.
For the ordinary skill in the art; specific embodiment is just exemplarily described the present invention by reference to the accompanying drawings; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; or without improving, design of the present invention and technical scheme are directly applied to other occasion, all within protection scope of the present invention.
Claims (5)
1. an electric vehicle large power high efficiency motor, comprise stator and rotor, it is characterized in that: described stator comprises the silicon steel sheet being formed by stacking by multiple mutual punching presses, in described silicon steel sheet, be provided with the stator teeth groove of large pyriform, in the stator teeth groove of described large pyriform, be provided with stator winding; Described rotor is arranged on the outside of described stator, and described rotor comprises rotor wheel rim, and is bonded in the multiple concentric machine fro of described rotor wheel rim inner side, and forms air gap between described magnetic links and described silicon steel sheet.
2. electric vehicle large power high efficiency motor according to claim 1, is characterized in that: on described silicon steel sheet, be reserved with Hull cell, in described Hull cell, be placed with Hall element.
3. electric vehicle large power high efficiency motor according to claim 1, is characterized in that: the number of described concentric machine fro is 32, described 32 concentric machine fro are uniformly distributed according to N-S-N-S mode, forms 16 pairs of magnetic fields; The number of described stator teeth groove is 36, and 72 winding coils of corresponding motor three phase windings are between two according to the order of connection with in 36 stator teeth groove that put in order described in being placed on.
4. electric vehicle large power high efficiency motor according to claim 1, is characterized in that: described concentric machine fro is neodymium-iron-boron steel disc.
5. electric vehicle large power high efficiency motor according to claim 1, is characterized in that: described silicon steel sheet is non-oriented silicon steel sheet, and its surface-coated has insulating coating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410110994.2A CN103904791B (en) | 2014-03-24 | 2014-03-24 | High-power efficient motor used for electric vehicle |
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| CN201410110994.2A CN103904791B (en) | 2014-03-24 | 2014-03-24 | High-power efficient motor used for electric vehicle |
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| CN103904791A true CN103904791A (en) | 2014-07-02 |
| CN103904791B CN103904791B (en) | 2015-02-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578658A (en) * | 2015-02-02 | 2015-04-29 | 台州市金宇机电有限公司 | Permanent magnetic direct-current brushless motor of biased mounting structure |
| CN104734416A (en) * | 2015-03-20 | 2015-06-24 | 台州市路桥鼎新阳光机电科技有限公司 | Stator offset electric vehicle hub motor |
| CN104734417A (en) * | 2015-03-20 | 2015-06-24 | 台州市路桥鼎新阳光机电科技有限公司 | Electric vehicle hub motor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102142746A (en) * | 2010-11-22 | 2011-08-03 | 常州市裕成富通电机有限公司 | Insulation process of motor stator punching sheet for electric vehicle |
| CN202696438U (en) * | 2012-03-01 | 2013-01-23 | 无锡爱玛车业有限公司 | High magnetic flux permanent magnetism direct current motor |
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2014
- 2014-03-24 CN CN201410110994.2A patent/CN103904791B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102142746A (en) * | 2010-11-22 | 2011-08-03 | 常州市裕成富通电机有限公司 | Insulation process of motor stator punching sheet for electric vehicle |
| CN202696438U (en) * | 2012-03-01 | 2013-01-23 | 无锡爱玛车业有限公司 | High magnetic flux permanent magnetism direct current motor |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578658A (en) * | 2015-02-02 | 2015-04-29 | 台州市金宇机电有限公司 | Permanent magnetic direct-current brushless motor of biased mounting structure |
| CN104578658B (en) * | 2015-02-02 | 2016-03-23 | 台州市金宇机电有限公司 | A kind of electric vehicle non-brush permanent-magnet DC motor of setoff installation structure |
| CN104734416A (en) * | 2015-03-20 | 2015-06-24 | 台州市路桥鼎新阳光机电科技有限公司 | Stator offset electric vehicle hub motor |
| CN104734417A (en) * | 2015-03-20 | 2015-06-24 | 台州市路桥鼎新阳光机电科技有限公司 | Electric vehicle hub motor |
| CN104734416B (en) * | 2015-03-20 | 2017-03-01 | 台州市路桥鼎新阳光机电科技有限公司 | A kind of stator biases wheel hub electric motor of electric vehicle |
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| CN103904791B (en) | 2015-02-25 |
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Denomination of invention: High-power efficient motor used for electric vehicle Effective date of registration: 20160719 Granted publication date: 20150225 Pledgee: Industrial Commercial Bank of China Ltd Taizhou Huangyan branch Pledgor: Taizhou Jinyu Motor Co., Ltd. Registration number: 2016330000047 |
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