CN207339606U - 4kW asynchronous machines used for electric vehicle - Google Patents
4kW asynchronous machines used for electric vehicle Download PDFInfo
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- CN207339606U CN207339606U CN201720914868.1U CN201720914868U CN207339606U CN 207339606 U CN207339606 U CN 207339606U CN 201720914868 U CN201720914868 U CN 201720914868U CN 207339606 U CN207339606 U CN 207339606U
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Abstract
The utility model discloses a kind of 4kW asynchronous machines used for electric vehicle, including stator and rotor, the stator are made of iron core and winding, and the rotor is mainly made of rotor core, rotor windings and shaft, and the rotor core is by some punchings（1）It is overrided to form, the cylindrical punching of punching has equally distributed hole（2）, the winding is distributed in the hole, the rotor inner wall（3）Section shape be upper end have trapezoid-shaped openings circle.The utility model analyzes the critical datas such as motor each several part flux density, iron core slot and iron core to iron core in stator are highly improved, can effectively save electromagnetic material, motor can with high speed load be connected directly, eliminate mechanical variable speed device, electromagnetic noise reduces 5 decibels, and power density enhancing efficiency improves 3% 5%, weight saving 10% 15%, finally obtain optimal design result, the utility model ensures the lightweight of motor, high-density power, low noise.
Description
Technical field
A kind of asynchronous machine used for electric vehicle is the utility model is related to, belongs to electric automobile research and development technology field.
Background technology
, also there is higher requirement in the characteristics of based on electric automobile to the motor of use.In order to lift the F-Zero of motor,
Motor should have higher instantaneous power and power density (W/kg)；In order to increase by 1 charging operating range, motor should have higher
Efficiency；And electric automobile is speed change work, so motor should have higher high low speed overall efficiency；In addition there is very strong mistake
Loading capability, big detent torque, torque response are fast.Speed is relatively low when electric car starts and climbs, but requires torque larger；Just
The torque often needed during operation is smaller, and speed is very high.It is constant torque characteristic during low speed, when high speed is constant output characteristic, and electricity
The operational speed range of motivation should be wider.In addition, motor should also possess firm, reliable, there is certain dustproof and waterproof ability, and
Cost cannot be excessive.The power density of domestic asynchronous driving motor is generally relatively low, cannot using common high power density motor
Meet the driving demand of electric automobile.
Casting aluminum rotor technique, currently used casting aluminum rotor method mainly have two kinds of pressure cast aluminium and centrifugal aluminum casting.From
The obtained casting of heart cast aluminium, metal structure is closer, and quality is relatively good, and device therefor is less complicated, and operating technology compares
Simply, stray loss is smaller compared with pressure cast aluminium, but its productivity is not high, and working condition is poor, labor intensity compared with
It is high.During pressure cast aluminium, aluminium hydraulic pressure is mapped to the very high speed in rotor slot and cavity, its filling velocity is up to 10~25m/s.Die casting
When, the aluminium water not as centrifugal aluminum casting has one section of flowing time, but what moment completed, therefore iron core and mould can need not be pre-
Heat.Iron core and mould do not preheat, this has just simplified operating procedure significantly, improve working condition.Additionally due to without centrifugal casting
Aluminium solidification feeding process complicated like that, cast-aluminum rotor stable quality, first-time qualification rate is up to more than 99%.
Utility model content
The utility model provides a kind of asynchronous machine used for electric vehicle, from stator, the selection of rotor material, winding technique,
Motor radiating mode and light-weight design etc. design asynchronous machine used for electric vehicle, to improve the work(of motor
Rate density.
The utility model is that technical solution is as follows used by solving above-mentioned technical problem：
A kind of 4kW asynchronous machines used for electric vehicle, it is characterised in that including stator and rotor, the stator by iron core and
Winding forms, and the rotor is mainly made of rotor core, rotor windings and shaft, and the rotor core is laminated by some punchings
Form, the cylindrical punching of punching has equally distributed hole, and the winding is distributed in the hole, on the section shape of the rotor inner wall is
Circle of the end with trapezoid-shaped openings.The rotor core is 125mm by the height that some silicon steel plate stackings form.
Further, the punching burr of the rotor is less than or equal to 0.1mm.
Further, the stacking factor of the iron core is 0.95.
Further, the winding exchanges winding for three-phase symmetrical.
Further, the winding is double-deck stacked winding.
Further, the power of the asynchronous machine used for electric vehicle is 4kW.
The beneficial effects of the utility model are：The utility model divides the critical datas such as motor each several part flux density
Analysis, structure and cast aluminium mode to rotor improved, can effectively save electromagnetic material, motor can load direct with high speed
It is connected, eliminates mechanical variable speed device, electromagnetic noise reduces 5 decibels, and power density enhancing efficiency improves 3%-5%, and weight subtracts
Light 10%-15%, finally obtains optimal design result, and the utility model ensures the lightweight of motor, and high-density power is low dry
Sound.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand the skill of the utility model
Art means, and being practiced according to the content of specification, with the preferred embodiment of the utility model and coordinate attached drawing detailed below
Describe in detail bright as after.
Brief description of the drawings
Fig. 1 is the structure diagram of rotor；
Fig. 2 is the diagrammatic cross-section of rotor inner wall.
Embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment is used to illustrate the utility model, but is not intended to limit the scope of the present invention.
, also there is higher requirement in the characteristics of based on electric automobile to the motor of use.In order to lift F-Zero, motor should
There are higher instantaneous power and power density (W/kg)；In order to increase by 1 charging operating range, motor should have higher efficiency；
And electric automobile is speed change work, so motor should have higher high low speed overall efficiency；In addition there is very strong overload energy
Power, big detent torque, torque response are fast.Speed is relatively low when electric car starts and climbs, but requires torque larger；Normal fortune
The torque needed during row is smaller, and speed is very high.It is constant torque characteristic during low speed, when high speed is constant output characteristic, and motor
Operational speed range should be wider.In addition, motor should also possess firm, reliable, there are certain dustproof and waterproof ability, and cost
Cannot be excessive.The power density of domestic asynchronous driving motor is generally relatively low.Had been unable to meet using common high power density motor
The driving demand of electric automobile, the utility model from rotor structure, casting aluminum rotor technique, winding technique, motor radiating mode with
And light-weight design etc. designs asynchronous machine used for electric vehicle, to improve the power density of motor.Secondly, lead to
Cross magnetic equivalent circuit method and the parameters such as the size of each part of electric machine rotor, winding line gauge and motor performance, Ran Houtong has been calculated
Cross the performance parameter curve that design of electrical motor software emulation has gone out motor, and the different rotor materials on motor performances of simulation analysis
The influence of parameter.Again, simulation study has been carried out to the working characteristics and Distribution of Magnetic Field of motor using FInite Element, demonstrated
The accuracy of Magnetic Circuit Method is imitated, and simulation calculation different electric machine iron core length, gas length and rotor slot number are to motor performance
Influence.In terms of light-weight design, to reduce motor weight, power of motor density is improved, then passes through casting aluminum rotor technique
Improvement staggered form cast-aluminum die is changed to by original normal pressurization cast aluminium die casting, there is centrality simultaneously to accelerate to cast aluminium
The uniform flow of cast aluminium speed, ensure that aluminium density, improve power of motor density.To established motor model, using two dimension
Magnetic field static analysis, analyzes the critical datas such as motor each several part flux density, finally obtains optimal design result.
In one embodiment, the utility model provides a kind of asynchronous machine used for electric vehicle, including stator and rotor, institute
State stator to be made of iron core and winding, the rotor is mainly made of rotor core, rotor windings and shaft, the rotor core
It is overrided to form by some punchings 1, the stacking factor of the iron core is 0.95.The cylindrical punching of punching has equally distributed 2 (such as Fig. 1 of hole
It is shown), the winding is distributed in the hole, and the section shape of the rotor inner wall 3 is the circle that upper end has trapezoid-shaped openings, such as
Shown in Fig. 2.The punching burr of the rotor is less than or equal to 0.1mm.The winding exchanges winding for three-phase symmetrical.The winding
For double-deck stacked winding.
The power of the asynchronous machine used for electric vehicle is 4kW, 4kW, 5kW, 7.5kW, 10kW, 15kW or 20kW.4kW、
Difference lies in the different so as to causing power not of core configuration and flute profile for 4kW, 5kW, 7.5kW, 10kW, 15kW and 20kW motors
Together.
Specifically, the utility model asynchronous machine used for electric vehicle, including stator and rotor, stator is by iron core 1 and winding 2
Composition, rotor are mainly made of rotor core, rotor windings and shaft, and the rotor core is overrided to form by some punchings 1, institute
The stacking factor for stating iron core is 0.95.The cylindrical punching of punching has equally distributed hole 2 (as shown in Figure 1), and the winding is distributed in this
Kong Zhong, the section shape of the rotor inner wall 3 are the circles that upper end has trapezoid-shaped openings.
Rotor core is a part for motor magnetic circuit, for placing rotor windings.General 0.5 millimeters thick of rotor core
Silicon steel sheet (i.e. punching) punching, be overrided to form, silicon steel sheet it is cylindrical punching have equally distributed hole, for disposing rotor windings.Turn
The effect of sub- winding is that cutting stator rotating excitation field produces induced electromotive force and electric current, and forms electromagnetic torque and revolve motor
Turn.Cage rotor and phase-wound rotor are divided into according to the difference of construction.The rotor core flute profile dimensional tolerance of the utility model
By the H10 of GB1801-79, width of rebate tolerance presses the H12 of GB1801-79, and yoke height is not much different in 0.2, the cast aluminium work of rotor
Skill meets OLD.549.001 " cast-aluminum rotor technical conditions ".The utility model to rotor note aluminium technique improvement by it is original just
Often pressurization cast aluminium die casting is changed to staggered form cast-aluminum die.
The utility model analyzes the critical datas such as motor each several part flux density, to the iron core slot and iron of iron core in stator
Core is highly improved, can effectively save electromagnetic material, motor can with high speed load be connected directly, eliminate mechanical speed change
Device, electromagnetic noise reduce 5 decibels, and power density enhancing efficiency improves 3%-5%, weight saving 4kg, finally obtains optimal
Design result, the utility model ensure motor lightweight, high-density power, low noise.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model technical principle is not departed from, some improvement and modification can also be made, these change
The scope of protection of the utility model is also should be regarded as into modification.
Claims (6)
- A kind of 1. 4kW asynchronous machines used for electric vehicle, it is characterised in that including stator and rotor, the stator by iron core and around Group composition, the rotor are made of rotor core, rotor windings and shaft, and the rotor core is by some punchings（1）Laminate and Into the cylindrical punching of punching has equally distributed hole（2）, the winding is distributed in the hole, the rotor inner wall（3）Section shape It is the circle that upper end has trapezoid-shaped openings, the rotor core is 125mm by the height that some silicon steel plate stackings form.
- 2. 4kW asynchronous machines used for electric vehicle as claimed in claim 1, it is characterised in that the punching burr of the rotor is small In or equal to 0.1mm.
- 3. 4kW asynchronous machines used for electric vehicle as claimed in claim 1, it is characterised in that the stacking factor of the iron core is 0.95。
- 4. 4kW asynchronous machines used for electric vehicle as claimed in claim 2 or claim 3, it is characterised in that the winding is three-phase symmetrical Exchange winding.
- 5. 4kW asynchronous machines used for electric vehicle as claimed in claim 2 or claim 3, it is characterised in that the winding is double-deck stacked Winding.
- 6. 4kW asynchronous machines used for electric vehicle as claimed in claim 2 or claim 3, it is characterised in that described used for electric vehicle asynchronous The power of motor is 4kW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720914868.1U CN207339606U (en) | 2017-07-26 | 2017-07-26 | 4kW asynchronous machines used for electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720914868.1U CN207339606U (en) | 2017-07-26 | 2017-07-26 | 4kW asynchronous machines used for electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207339606U true CN207339606U (en) | 2018-05-08 |
Family
ID=62376797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720914868.1U Active CN207339606U (en) | 2017-07-26 | 2017-07-26 | 4kW asynchronous machines used for electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207339606U (en) |
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2017
- 2017-07-26 CN CN201720914868.1U patent/CN207339606U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200630 Address after: No.6, SHUNFA Road, photovoltaic industry base, Xiamei Town, Nan'an City, Quanzhou City, Fujian Province Patentee after: Fujian Dongjing Technology Co., Ltd Address before: 350000 first floor of No.6 factory building, No.16, Xincheng West Road, Qingkou Town, Minhou County, Fuzhou City, Fujian Province Patentee before: FUJIAN BAILONG POWER SYSTEM Co.,Ltd. |