CN106655547A - New energy automobile motor - Google Patents
New energy automobile motor Download PDFInfo
- Publication number
- CN106655547A CN106655547A CN201610987732.3A CN201610987732A CN106655547A CN 106655547 A CN106655547 A CN 106655547A CN 201610987732 A CN201610987732 A CN 201610987732A CN 106655547 A CN106655547 A CN 106655547A
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- CN
- China
- Prior art keywords
- rotor
- energy automobile
- new energy
- stator
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/15—Sectional machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a new energy automobile motor, which comprises a motor stator and a rotor, wherein the motor stator adopts a fractional slot-concentrated winding mode; the rotor adopts an exotic appearance and comprises inverted eight-shaped magnetic steels. The new energy automobile motor provided by the invention belongs to one of driving motors of a new energy automobile. A close slot-pole structure is adopted, electromagnetic unbalance can be effectively avoided, and low cogging torque and low harmonic for the fractional slot-concentrated winding are realized. The stator adopts the fractional slot-concentrated winding mode, and compared with a distributed winding mode, no end part exists basically, and the mounting space is small; and due to the fractional slot windings, the harmonic content is greatly reduced. The rotor adopts the inverted eight-shaped magnetic steels, and compared with surface-mounted magnetic steels, the magnetic density of an air gap is large. Compared with the existing new energy automobile driving motor technique, the new energy automobile motor disclosed by the invention has the advantages of small mounting space, large power density, high torque density, small cogging torque and low harmonic.
Description
Technical field
The present invention relates to new-energy automobile field, is related to a kind of motor for being applied to new-energy automobile.
Background technology
Automobile is the important component part of modern society, is also one of great achievement of industrial development.It is not only the world
Pillar of the economy, and it is made that huge contribution for quick flowing necessary to people's everyday life.But, it is with carbon resource
The internal-combustion engines vehicle of energy not only discharges the pollutants such as carbon dioxide, causes the climate warming in the whole world, and little in emission
Grain, is also the important arch-criminal of haze.Count according to the Chinese Academy of Sciences, about 22.2% PM2.5 derives from vehicle exhaust.In addition, ground
The petroleum resources of ball are reduced rapidly, study the emphasis that fungible energy source is also the concerns such as current scientific research personnel and industrial quarters.
In recent ten years, new-energy automobile, including pure electric automobile and hybrid vehicle etc., arise at the historic moment, with height
Performance driving electric motor and controller technology and the efficient fusion of energy-storage system, replace the internal combustion engine and its machine driving of orthodox car
System, becomes the milestone formula development node of Study of Transportation Along development field.
Motor and its drive system are the hearts of electric automobile.The system is mainly by electric motor of automobile, power inverter and control
Device composition processed.Wherein, electric motor of automobile directly converts electrical energy into mechanical energy, directly drives vehicle；Power inverter is according to motor
Index, there is provided the driving voltage and electric current of specific indexes；Controller according to the purpose of vehicle condition, road conditions and driver, by becoming
Parallel operation provides the output that signal controls power inverter, and then the operation of adjustment electric motor of automobile, to produce specific torque and turn
Speed.
Electric motor of automobile is the core of whole drive system of electric automobile, and the quality of its performance is not only related to car steering
Comfort level, and determine the endurance of electric automobile.Originally, electric automobile adopts direct current motor system, as motor sets
The continuous development of meter and production technology, asynchronous machine, magneto and switched reluctance machines etc. are also developing progressively electric motor of automobile.
So far, American market is mainly the electric automobile with asynchronous machine as motor, and Tesla is its representative, its production
The asynchronous automobile drive electric motor efficiency that high-performance pure electric automobile T3 is adopted is for 92%；Due to its permanent magnet on European market
Scarcity, mainly studies switched reluctance machines；Asian market is mainly magneto, and wherein Toyota is enjoyed with its Prius motor
Whole electric automobile field is praised, its built-in permanent magnetic synchronization automobile drive electric motor and mixing coordinated drive system are in Oak Ridge country
The overall efficiency test result in laboratory is 77%.
Therefore, magneto with its high efficiency, by new-energy automobile industry welcome by high power density.But, new energy
The efficiency of source automobile permanent magnet motor, needs to improve；In addition, electric motor of automobile runs in sealed environment, and magneto
Performance be greatly influenced by temperature, study cooling means, be also one of focus of New energy automobile motor research.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, a kind of cogging torque of present invention offer is little, and harmonic wave contains
Amount is few, the high New energy automobile motor of power density, improves the efficiency and stability of new-energy automobile operation；In prior art
On the basis of, effectively strengthen the endurance of automobile.
Technical scheme：
A kind of New energy automobile motor, using external stator internal rotor form, the stator is by multiple monodentate stator core couplings
Conjunction is formed, and armature winding of the full tooth around form is provided with the stator tooth in each monodentate stator core, overall after coupling
Form the centralized winding of fractional-slot；The rotor includes rotor core and magnetic pole, and the rotor core includes rotor core main body
Part and rotor core supplement part；For unusual profile, it is cut out along certain radian by the corresponding iron core of each magnetic pole
After make；The rotor core main part includes matrix and the tooth, entirety being arranged on matrix in gear-like, two two adjacent teeths
Between be provided with one piece of rotor core and supplement part, rotor core to be supplemented and be provided with air-cooled passage between part and matrix, each
Magnetic pole is one block of magnet and is divided into both sides and corresponding positions that two magnet steel are separately mounted to same rotor core supplement part
Put between the tooth at place so that each magnetic pole forms splayed structure, wherein splay little end opening points to rotor center, it is adjacent
Two pole polarities formed on the contrary N poles and S interpolars every form.
Further, in the present invention, the motor is less than using the least common multiple of proximal pole groove electric machine structure and pole slot number
Equal to 12.The pole structure of 12 groove 8, the magnetic pole that monodentate stator core has 12, rotor core is specifically adopted there are 8 in the present invention.
Monodentate stator core has in the case of 12, and each monodentate stator core characterizes 30 degree of radians.
Further, in the present invention, the stator adopts modularized design, in each monodentate stator core be used for and
On two side walls of the adjacent monodentate stator core connection in both sides, it is tongue with matching grooves that side is groove, opposite side, phase
Adjacent monodentate stator core forms complete stator structure by the combination of groove and tongue.Full tooth around winding no more than single
The scope of tooth stator core, it is to avoid can not couple between monodentate stator core.
Further, in the present invention, the size of the rotor with after the minimum optimal conditions of cogging torque determine, specifically
Process is：It is determined that initial stator thickness, rotor split the radian that ratio, the thickness of each magnet steel and rotor supplement part；Press
The above each initial parameter is further adjusted according to processing technology precision；Then carry out simulation calculation using simulation software, finally with
Minimum cogging torque is optimization aim, and under minimum cogging torque simulation result, corresponding rotor size is final
Scheme.
Further, in the present invention, the size of the magnet steel is maximum with the air gap average magnetic field density of motor under stable state
Determine after the minimum optimal conditions of harmonic.
Further, in the present invention, the air-cooled passage is located in splayed structure between two magnet steel, and in axial direction
Than magnet steel near the center of rotor；The height of air-cooled passage is not less than the thickness of each magnet steel, and magnetism isolating effect is obvious；Air-cooled passage
Width less than single magnetic pole width, preferably air-cooled channel width is the 1/2 of single magnet pole widths.
In above-mentioned size, the height dimension of air-cooled passage is defined as follows：On the section of motor vertical axial direction, along radial direction point
The size of cloth.The thickness of air-cooled passage is defined as follows：Perpendicular to the size in air-cooled channel height direction.Magnet thickness size
It is defined as follows：It is magnet steel width along radially-arranged size, perpendicular to magnet steel width on the section of motor vertical axial direction
Size be magnet thickness.Single magnet pole widths size is defined as follows：On the section of motor vertical axial direction, along radially-arranged
Size.
Beneficial effect：
The invention belongs to a kind of New energy automobile motor, little with end, detent force is little, and harmonic content is low and power density
Height, the advantages of torque density is high.In the present invention, New energy automobile motor is fully using the spy of the pole external stator internal rotor of 12 groove 8
Property.Using distributed centralization winding construction, the end size of motor is significantly reduced, simplify the production technology of motor, subtracted
Lacked the installing space of motor, there is provided automobile it is comfortable；In addition, significantly reducing for tip lengths, effectively reduces copper
Consumption, reduces copper loss, so as to increased efficiency；Using modular stator structural and full tooth around winding coiling form, have
Beneficial to the mechanization production of motor, there is provided production efficiency, and modular construction, increased the maintainability of motor；Using
Splayed magnet steel, greatly increases air-gap magnetic density, so as to improve the power density and torque density of motor；Using
The air-cooled passage of rotor, significantly reduces the temperature of motor internal, and avoids the magnetic field short circuit in splayed configuration magnetic field；Using unusual
Rotor structure, significantly reduces motor harmonic wave, further improves the effective power density and security and stability of motor.
Description of the drawings
Fig. 1 is the schematic diagram of the present invention；
Fig. 2 is the stator structure schematic diagram of the present invention.
Specific embodiment
The present invention is further described below in conjunction with the accompanying drawings.
The New energy automobile motor of the present invention is illustrated in figure 1, using external stator internal rotor form, between stator and rotor
With air breath 5；The stator is coupled to form by multiple monodentate stator cores 1, each monodentate stator core 1 and its stator tooth
The full tooth of employing arranged on 3 forms a module, 12 modules of the same race, by monodentate stator core 1 around the armature winding 2 of form
Projection and groove fit be coupled into after stator and the centralized winding of fractional-slot be integrally formed, form fixed between adjacent stator tooth 3
Pilot trench mouth 4；Using fractional-slot concentratred winding, its winding by full tooth around, it is not necessary to bridge wire, whole end is extremely short.Fig. 2 is
Monodentate stator core 1, while being bossing, while being groove, characterizes 30 radians.
The rotor includes rotor core and magnetic pole, and the rotor core includes rotor core main part 7 and rotor iron
The heart supplements part 6；The rotor core main part 7 includes that matrix is in gear-like with the tooth, entirety being arranged on matrix, two-by-two
One piece of rotor core is provided between adjacent teeth and supplements part 6, rotor core supplements and air-cooled leading to is provided between part 6 and matrix
Road 10, has 8 magnetic poles, and each magnetic pole is one block of magnet and is divided into two magnet steel and is separately mounted to same rotor core to be mended
Fill between the both sides of part 6 and the tooth of corresponding position so that each magnetic pole forms splayed structure, wherein splay small end
Opening points to rotor center, and two adjacent pole polarities form on the contrary the form of N poles 8 and the interval of S poles 9.Splayed structure, its
Size and mounting means are to determine after the minimum optimal conditions of air gap average magnetic field density maximum harmonic under stable state.
In present configuration, to determine after the minimum optimal conditions of cogging torque, detailed process is the size of the rotor：
It is determined that initial stator thickness, rotor split the radian that ratio, the thickness of each magnet steel and rotor supplement part；According to processing work
Skill precision further adjusts the above each initial parameter；Then simulation calculation is carried out using simulation software, finally with minimum tooth
Groove torque is optimization aim, and under minimum cogging torque simulation result, corresponding rotor size is final scheme.
Above-mentioned air-cooled passage is located in splayed structure between two magnet steel, and axial direction than magnet steel in rotor
The heart；The height of air-cooled passage 10 is not less than the thickness of each magnet steel, and magnetism isolating effect is obvious；The width of air-cooled passage 10 is single magnetic pole
The 1/2 of width.
It is of the invention mainly to adopt the technologies such as fractional-slot concentratred winding, splayed structure, modular stator, realize the invention
The Low gullet torque of motor, few harmonic wave, without end, the feature such as power density is big.Described modular stator structural, such as Fig. 2 institutes
Show.
The above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of New energy automobile motor, it is characterised in that：Using external stator internal rotor form, the stator is determined by multiple monodentates
Sub- iron core (1) is coupled to form, and on the stator tooth (3) in each monodentate stator core (1) electricity of the full tooth around form is provided with
Pivot winding (2), is integrally formed the centralized winding of fractional-slot after coupling；The rotor includes rotor core and magnetic pole, the rotor
Iron core includes that rotor core main part (7) and rotor core supplement part (6)；The rotor core main part (7) includes
Matrix and the tooth being arranged on matrix, rotor core main part (7) is in integrally gear-like, and between two two adjacent teeths one is provided with
Block rotor core supplements part (6), and rotor core supplements part (6) and air-cooled passage (10), each magnetic are provided with and matrix between
Pole is one block of magnet and is divided into both sides and corresponding positions that two magnet steel are separately mounted to same rotor core supplement part (6)
Put between the tooth at place so that each magnetic pole forms splayed structure, wherein splay little end opening points to rotor center, it is adjacent
Two pole polarities formed on the contrary N poles and S interpolars every form.
2. a kind of New energy automobile motor according to claim 1, it is characterised in that：The motor is tied using proximal pole groove motor
The least common multiple of structure and pole slot number is less than or equal to 12.
3. New energy automobile motor according to claim 2, it is characterised in that：The stator adopts modularized design,
It is used for two side walls of monodentate stator core (1) connection adjacent with both sides in each monodentate stator core (1), side is recessed
Groove, opposite side are the tongues with matching grooves, and adjacent monodentate stator core (1) is formed completely by the combination of groove and tongue
Stator structure.
4. a kind of New energy automobile motor according to claim 3, it is characterised in that：The size of the rotor is turned with teeth groove
Determine after the minimum optimal conditions of square, detailed process is：It is determined that initial stator thickness, rotor split ratio, each magnet steel it is thick
Degree and rotor supplement the radian of part (6)；The above each initial parameter is further adjusted according to processing technology precision；It is then sharp
Simulation calculation is carried out with simulation software, finally with minimum cogging torque as optimization aim, in minimum cogging torque emulation knot
Under fruit, corresponding rotor size is final scheme.
5. a kind of New energy automobile motor according to claim 3, it is characterised in that：The size of the magnet steel is with stable state
Determine after the minimum optimal conditions of air gap average magnetic field density maximum harmonic of motor.
6. a kind of New energy automobile motor according to claim 3, it is characterised in that：The air-cooled passage (10) is positioned at eight
In character form structure between two magnet steel, and in axial direction than magnet steel near the center of rotor；The height of air-cooled passage (10) is not less than
The thickness of each magnet steel, magnetism isolating effect is obvious；Width of the width of air-cooled passage (10) less than single magnetic pole.
7. a kind of New energy automobile motor according to claim 6, it is characterised in that：Air-cooled passage (10) width is single
The 1/2 of magnet pole widths.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610987732.3A CN106655547A (en) | 2016-11-10 | 2016-11-10 | New energy automobile motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610987732.3A CN106655547A (en) | 2016-11-10 | 2016-11-10 | New energy automobile motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106655547A true CN106655547A (en) | 2017-05-10 |
Family
ID=58805580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610987732.3A Pending CN106655547A (en) | 2016-11-10 | 2016-11-10 | New energy automobile motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106655547A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1180457A (en) * | 1996-02-23 | 1998-04-29 | 松下电器产业株式会社 | Motor |
| CN101106294A (en) * | 2006-07-16 | 2008-01-16 | 万德鸿 | High-speed self started frequency conversion generator |
| WO2008023413A1 (en) * | 2006-08-23 | 2008-02-28 | Kabushiki Kaisha Toshiba | Permanent magnetic type electric motor |
| CN201918812U (en) * | 2010-12-10 | 2011-08-03 | 上海电机学院 | Enhanced magnetic flux switching doubly salient motor with magnetic gathering effect for outer rotor magnetic field |
| CN202076907U (en) * | 2011-04-02 | 2011-12-14 | 浙江博望科技发展有限公司 | Ferrite three-phase permanent magnet motor with double-layer windings |
| CN202524184U (en) * | 2012-03-05 | 2012-11-07 | 德昌电机(深圳)有限公司 | Permanent magnetic motor and bladeless fan applying the same |
| CN202918085U (en) * | 2012-10-31 | 2013-05-01 | 大洋电机新动力科技有限公司 | Oblique pole rotor structure of permanent magnet synchronous motor |
| CN103701287A (en) * | 2013-03-21 | 2014-04-02 | 广东肇庆新广仪科技有限公司 | Hybrid excitation multi-flux switching type automobile hub motor |
| CN105723594A (en) * | 2013-11-18 | 2016-06-29 | 操纵技术Ip控股公司 | Low cost permanent magnet motor for an electric power steering system |
-
2016
- 2016-11-10 CN CN201610987732.3A patent/CN106655547A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1180457A (en) * | 1996-02-23 | 1998-04-29 | 松下电器产业株式会社 | Motor |
| CN101106294A (en) * | 2006-07-16 | 2008-01-16 | 万德鸿 | High-speed self started frequency conversion generator |
| WO2008023413A1 (en) * | 2006-08-23 | 2008-02-28 | Kabushiki Kaisha Toshiba | Permanent magnetic type electric motor |
| CN201918812U (en) * | 2010-12-10 | 2011-08-03 | 上海电机学院 | Enhanced magnetic flux switching doubly salient motor with magnetic gathering effect for outer rotor magnetic field |
| CN202076907U (en) * | 2011-04-02 | 2011-12-14 | 浙江博望科技发展有限公司 | Ferrite three-phase permanent magnet motor with double-layer windings |
| CN202524184U (en) * | 2012-03-05 | 2012-11-07 | 德昌电机(深圳)有限公司 | Permanent magnetic motor and bladeless fan applying the same |
| CN202918085U (en) * | 2012-10-31 | 2013-05-01 | 大洋电机新动力科技有限公司 | Oblique pole rotor structure of permanent magnet synchronous motor |
| CN103701287A (en) * | 2013-03-21 | 2014-04-02 | 广东肇庆新广仪科技有限公司 | Hybrid excitation multi-flux switching type automobile hub motor |
| CN105723594A (en) * | 2013-11-18 | 2016-06-29 | 操纵技术Ip控股公司 | Low cost permanent magnet motor for an electric power steering system |
Non-Patent Citations (1)
| Title |
|---|
| 刘奇林，沈启平: "车用高功率密度永磁同步电机设计及试验研究", 《电机与控制应用》 * |
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Application publication date: 20170510 |
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