CN107901751A - Electric automobile coaxial-type In-wheel motor driving system synthesis integral structure - Google Patents
Electric automobile coaxial-type In-wheel motor driving system synthesis integral structure Download PDFInfo
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- CN107901751A CN107901751A CN201711134447.8A CN201711134447A CN107901751A CN 107901751 A CN107901751 A CN 107901751A CN 201711134447 A CN201711134447 A CN 201711134447A CN 107901751 A CN107901751 A CN 107901751A
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- motor
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- wheel
- electric automobile
- driving system
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
- B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
- B60K2007/0092—Disposition of motor in, or adjacent to, traction wheel the motor axle being coaxial to the wheel axle
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Braking Arrangements (AREA)
Abstract
The present invention provides a kind of electric automobile coaxial-type In-wheel motor driving system synthesis, including motor, retarder and the disk braking system being arranged in wheel hub, and motor is segmentation electromagnetic array axial flux motor；Retarder is single planetary reducer；The input terminal for being segmented the motor shaft of electromagnetic array axial flux motor and the solar shaft of single planetary reducer is external splines, motor shaft and solar shaft are on the same line, sleeve is equipped between the output terminal of motor shaft and the input terminal of solar shaft, the both ends of sleeve are equipped with the internal spline engaged with the internal spline.The present invention is used as wheel hub motor, compact-sized single planetary reducer by choosing efficient segmentation electromagnetic array axial flux motor, and be attached motor shaft on the same line with solar shaft using the structure of the jacketed cylinder of outer external splines, so as to fulfill the loss for reducing transmission energy at different levels and the effect of space hold amount.
Description
Technical field
The invention belongs to electric automobile field, and in particular to a kind of electric automobile coaxial-type In-wheel motor driving system synthesis
Integral structure.
Background technology
As the growing lack of petroleum resources and air pollution are increasingly severe, society and expectation of the people to new energy car
It is increasingly stronger, the car of the form such as pure electric vehicle, hybrid power, plug-in fuel cell commercially gradual emersion, new energy car
Type is effective to the anxiety for alleviating oil.
New-energy automobile with respect to the automobile of conventional engines for, due to the difference of type of drive, complete vehicle structure arrangement
Difference, drive assembly arrangement among these is most important for vehicle, directly determines the dynamic property of vehicle, economy, relaxes
Adaptive.In the drive system of current traditional combustion engine, engine, clutch, speed changer, transmission shaft, differential mechanism, semiaxis,
The transfer motion power parts such as universal joint are too busy to get away.And in the vehicle of some new energy, although motor instead of traditional hair
Motivation has certain simplification with clutch configuration form, but this centralization driving is more or less compared with distributed drive assembly
It is increasingly complex, the losses of transmission energy at different levels are caused, cause transmission efficiency to decline, it is larger to also result in dynamical system occupied space,
It is unfavorable for the arrangement in vehicle space.
The content of the invention
The technical problem to be solved in the present invention is：A kind of electric automobile coaxial-type In-wheel motor driving system synthesis one is provided
Body structure, reduces loss and the space hold amount of transmission energy at different levels.
The technical solution taken by the invention to solve the above technical problem is：A kind of electric automobile coaxial-type wheel hub motor
Drive system assembly integral structure, including motor, retarder and the disk braking system being arranged in wheel hub, electric machine casing lead to
Motor connecting base is crossed to be fixed in wheel hub, it is characterised in that：The motor is segmentation electromagnetic array axial flux motor；Institute
The retarder stated is single planetary reducer；It is segmented the motor shaft of electromagnetic array axial flux motor and single planet tooth
The input terminal of the solar shaft of wheel decelerator is external splines, motor shaft with solar shaft on the same line, the output terminal of motor shaft with
Sleeve is equipped between the input terminal of solar shaft, the both ends of sleeve are equipped with the internal spline engaged with the internal spline.
By such scheme, the solar shaft of the single planetary reducer is gear shaft, single planetary gear speed-reduction
3 planetary gears engaged with solar shaft are further included in device, 3 planetary gears are engaged with ring gear respectively, and planetary gear shaft is led to
Planet carrier is crossed to be bolted to connection with wheel hub；The side of solar shaft is equipped with the gear wheel that engage with ring gear, gear wheel and
Motor connecting base is bolted to connection.
By such scheme, oil sealing and circlip are equipped between the input terminal and motor connecting base of the solar shaft.
By such scheme, oil sealing is equipped between the motor connecting base and wheel hub.
By such scheme, the motor connecting base is bolted with electric machine casing, and electric machine casing leaves and the suspension bottom
Arm and the hinged lifting lug of upper swing arm.
By such scheme, the wheel hub is equipped with two spring bearings, is arranged in segmentation electromagnetic array axial magnetic flux
Motor side and single planetary reducer side；Wherein, close to the spring bearing of single planetary reducer side
Equipped with elastic stopping baffle ring.
By such scheme, the spring bearing is taper roll bearing.
By such scheme, the disk braking system includes caliper and brake disc, and wherein caliper passes through motor casing
Lifting lug installation on body, brake disc are bolted with wheel hub.
By such scheme, the junction of the external splines and internal spline is equipped with oil sealing.
By such scheme, it is equipped between the brake disc and segmentation electromagnetic array axial flux motor and is used to set biography
The rectangle gear ring of sensor.
Beneficial effects of the present invention are：Wheel hub is used as by the segmentation electromagnetic array axial flux motor for choosing efficient
Motor, compact-sized single planetary reducer, and using the jacketed cylinder of outer external splines structure by motor shaft and the sun
Axis is attached on the same line, so as to fulfill the loss for reducing transmission energy at different levels and the effect of space hold amount.
Brief description of the drawings
Fig. 1 is the overall structure diagram of one embodiment of the invention.
Fig. 2 is the motor outline drawing of one embodiment of the invention.
Fig. 3 is the reducer structure schematic diagram of one embodiment of the invention.
In figure：1- calipers installation lifting lug 2- wheel rims 3,9,15- oil sealing 4- elastic stoppings baffle ring 5,7- spring bearings 6,16,
18th, 26,30- bolt 8- brake disc 10- caliper 11- electric machine casing 12- internal spline 13- upper swing arm 14- sleeve 17- lower swing arms
19- motors 20,34- outer flower-key 21- motor shaft 22- gear wheel 23- planet carrier 24- solar shaft 25- planetary gear 27- planetary gears
Axis 28- ring gear 29- retarder 31- wheel hub 32- rectangle gear ring 33- motor connecting bases.
Embodiment
With reference to instantiation and attached drawing, the present invention will be further described.
The present invention provides a kind of electric automobile coaxial-type In-wheel motor driving system synthesis, as shown in Figure 1 to Figure 3, including
Motor 19, retarder 29 and the disk braking system being arranged in wheel rim 2, electric machine casing 11 are fixed on by motor connecting base 33
In wheel rim 2, the motor 19 is segmentation electromagnetic array axial flux motor；The retarder 29 is single planetary gear
Retarder；The output terminal for being segmented the motor shaft 21 of electromagnetic array axial flux motor is external splines 20, single planetary gear reduction
The input terminal of the solar shaft 24 of fast device is external splines 34, motor shaft 21 with solar shaft 24 on the same line, motor shaft 21 it is defeated
Sleeve 14 is equipped between the input terminal of outlet and solar shaft 24, the both ends of sleeve 14 are equipped with engages with the external splines 20,34
Internal spline 12.
Further, the solar shaft 24 of the single planetary reducer is gear shaft, single planetary gear speed-reduction
Further include 3 planetary gears engaged with solar shaft 24,25,3 planetary gears 25 in device to engage with ring gear 28 respectively, planet
Gear shaft 27 is fixedly connected by planet carrier 23 with wheel hub 31 by bolt 6；The side of solar shaft 24 is equipped with and is nibbled with ring gear 28
The gear wheel 22 of conjunction, gear wheel 22 are fixedly connected with motor connecting base 33 by bolt 26.
Further, lubrication has all been accomplished in the connection at each position such as spline, gear engagement, in component connecting portion all
Oil sealing, preferably sealing are installed, leaked out to prevent lubricating oil.Set between the input terminal and motor connecting base 33 of the solar shaft 24
There is oil sealing 3.Oil sealing 9 is equipped between the motor connecting base 33 and wheel hub 31.
Preferably, the motor connecting base 33 is connected with 11 bolt 18 of electric machine casing, and electric machine casing 11 leaves and suspension
Lower swing arm 17 and the hinged lifting lug of upper swing arm 13.
Preferably, the wheel hub 31 is equipped with two spring bearings 5,7, is arranged in segmentation electromagnetic array axial magnetic flux
Motor side and single planetary reducer side；Wherein, the bearing 5 close to single planetary reducer side is set
Elastic stopping baffle ring 4.
Preferably, the disk braking system includes caliper 10 and brake disc 8, and wherein caliper 10 passes through motor casing
Lifting lug 1 on body 11 is installed, and brake disc 8 is connected with wheel hub 31 by bolt 30.
Preferably, the junction of the external splines 20,34 and internal spline 12 is equipped with the oil sealing 15 of motor output end.
Preferably, it is equipped between the brake disc and segmentation electromagnetic array axial flux motor and is used to set sensor
Rectangle gear ring 32, such as abs sensor can be set.
The electromagnetic principle for being segmented electromagnetic array axial-flux electric machine is the Lorentz law of electromagnetic induction, is determined using right-handed helix
Then judge the direction of electromagnetic force, magnetic direction is axial magnetic field.The general characteristic of the motor is high efficiency, High Power Factor, height
Peak value torsion is strong, low-voltage time constant, small, easy to control, running smoothly, simple construction.Radial dimension is more than axial ruler
Very little shape.The advantages of present invention is using segmentation electromagnetic array axial flux motor：
(1) it is efficient：Segmentation electromagnetic array axial-flux electric machine uses iron-core-free technology, and iron is eliminated than conventional motors
Core loss, it is small, light-weight simultaneously because its space availability ratio is high, therefore mechanical loss is also below conventional motors, this two
Huge change substantially so that motor in axial magnetic field becomes a kind of energy-saving efficient motor truly.
(2) power density is high：Under same volume or weight, the output power of segmentation electromagnetic array axial-flux electric machine is
It is more than conventional motors several times.For needing to control the application of volume and weight, disc type electric machine is undoubtedly optimal selection.
(3) low noise：As a result of iron-core-free winding technique, segmentation electromagnetic array axial-flux electric machine is than traditional electricity
Machine eliminates teeth groove pulsation, makes its vibrating noise and torque pulsation is obtained for significantly relatively low, requiring low noise, torque pulsation
Small occasion, segmentation electromagnetic array axial-flux electric machine is also and its preferably one kind selects.
(4) controllability is strong：Frequency conversion, servo and brush DC control system can be used by being segmented electromagnetic array axial-flux electric machine
System is controlled driving, controls wide adaptability, and the smoothness run when particularly low speed is run is high.With regard to device intelligence
For development, the application of segmentation electromagnetic array axial-flux electric machine would is that a kind of development trend.
(5) constant torque：Constant nominal torque can be exported in full active section by being segmented electromagnetic array axial-flux electric machine.
In addition its stable low-speed running characteristic, can cancel mechanical reduction gear in numerous applications.
Since the distributed driving of wheel hub motor needs motor, retarder, brake to be incorporated into wheel hub, so power
The axial dimension of transmission should try one's best it is equal with tyre width, so size relatively small axial as much as possible.Therefore, the present invention is using single
Rows of planetary gear reduction unit is connected with motor.Planetary gear mechanism is mainly made of sun gear, planetary gear, ring gear.This
The planetary reducer driving link of invention is sun gear, and driven member is planetary gear, and fixing piece is ring gear.Advantage is as follows：
(1) the small of single planetary reducer, quality it is small, it is compact-sized, occupy little space, light weight, structure
Simply, resistance to compression, bearing capacity are strong.
(2) symmetry due to single planetary reducer on drive mechanism so that act on centre wheel and bearing
In reaction force can mutually balance each other, so as to be conducive to improve the transmission efficiency in transmission process, its value can reach 0.97.
(3) ability of even running in the transmission process of single planetary reducer, shock resistance and vibration is more powerful.
(4) since running balance is smooth, the low noise in transmission, single planetary reducer internal gear processing technology
Precision is all higher, and the gap between gear can ensure more than very little arc point, and internal compact fortune impact resistance is strong.
(5) gear range is big, and speed reducing ratio scope is wide, exportable larger moment of torsion, improves the climbable gradient of electric automobile, adds
Fast equidynamic energy.
(6) single planetary reducer only has single-stage driving, so can reduce on axial dimension, is easily installed
In wheel hub in limited space.
To solve wheel hub motor power connector, noise problem, selects motor shaft and planetary reducer sun axis connection
Mode is the structure of the jacketed cylinder of outer external splines.
The present invention is installed on the drive system, braking system, deceleration system of motor in the space in wheel hub, and height collects
Cheng Hua, simplification eliminate the driving sections such as all clutches of traditional combustion engine automobile, speed changer, transmission shaft, differential mechanism, semiaxis
Part, largely alleviates complete vehicle quality, substantially increases the mechanical efficiency in transmission, the space saved can be used to hold
Receive storage battery, in single reduction gear, planet carrier is output mechanism, and sun shaft gear is input mechanism, and ring gear is fixing piece,
The effect of deceleration increment is realized, improves the dynamic property of electric automobile.The coaxial transmission of motor shaft and solar shaft causes transmission to imitate
The problem of rate is high, and noise is big is addressed, and improves electric automobile comfort.
Type of drive process of the present invention：
Entire car controller gives motor torque input, and storage battery is powered to motor stator, and electronic coil produces magnetic induction force,
It is allowed to drive the rotor of motor to rotate, wheel hub motor rotor is with regard to drive motor shaft output torque.
Motor shaft output internal spline and planetary reduction gear solar shaft internal spline, are connected by the external splines of connecting shaft, this
Sample power passes to solar shaft from motor shaft, and solar shaft makes gear shaft, and central gear is engaged with planetary gear, and power passes to
Planetary gear, the planetary gear number of teeth are more than the sun gear number of teeth, and such power just completes deceleration and increases square.Planetary gear and planet carrier
Fixed, power is exported from planet carrier.
The power of planet carrier output passes to wheel hub by bolt, and wheel hub imparts power to wheel rim, such to transmit
Journey completes the driving to wheel, and the rotating speed of controllable motor realizes the adjusting of speed.
The gearratio of retarder
Z2For the planetary gear number of teeth, Z1For the sun gear number of teeth.
Mode of braking process of the present invention
In the process of moving, brake disc, wheel hub and wheel are to rotate synchronously to automobile, caliper and electric machine casing fix,
Not with disc rotation.After driver's brake pedal, brake system hydraulic oil is oily from brake piping input brake oil cylinder
The propelling piston that increases of hydraulic pressure travels forward, and braking clamp body overcomes gap to promote brake block brake pad and brake disc friction,
Complete braking.
Above example is merely to illustrate the design philosophy and feature of the present invention, and its object is to make technology in the art
Personnel can understand present disclosure and implement according to this, and protection scope of the present invention is not limited to above-described embodiment.So it is all according to
The equivalent variations made according to disclosed principle, mentality of designing or modification, within protection scope of the present invention.
Claims (10)
1. a kind of electric automobile coaxial-type In-wheel motor driving system synthesis integral structure, including the electricity being arranged in wheel hub
Machine, retarder and disk braking system, electric machine casing are fixed in wheel hub by motor connecting base, it is characterised in that：Described
Motor is segmentation electromagnetic array axial flux motor；The retarder is single planetary reducer；It is segmented electromagnetism battle array
The input terminal of the solar shaft of the motor shaft of row axial flux motor and single planetary reducer be external splines, motor shaft and
Solar shaft on the same line, is equipped with sleeve between the output terminal of motor shaft and the input terminal of solar shaft, the both ends of sleeve are equipped with
The internal spline engaged with the internal spline.
2. electric automobile coaxial-type In-wheel motor driving system synthesis integral structure according to claim 1, its feature
It is：The solar shaft of the single planetary reducer is gear shaft, further included in single planetary reducer 3 with
The planetary gear of solar shaft engagement, 3 planetary gears are engaged with ring gear respectively, and planetary gear shaft is led to by planet carrier and wheel hub
Bolt is crossed to be fixedly connected；The side of solar shaft is equipped with the gear wheel engaged with ring gear, and gear wheel passes through spiral shell with motor connecting base
Bolt is fixedly connected.
3. electric automobile coaxial-type In-wheel motor driving system synthesis integral structure according to claim 1, its feature
It is：Oil sealing and circlip are equipped between the input terminal and motor connecting base of the solar shaft.
4. electric automobile coaxial-type In-wheel motor driving system synthesis integral structure according to claim 1, its feature
It is：Oil sealing is equipped between the motor connecting base and wheel hub.
5. electric automobile coaxial-type In-wheel motor driving system synthesis integral structure according to claim 1, its feature
It is：The motor connecting base is bolted with electric machine casing, and electric machine casing leaves to be hinged with suspension lower swing arm and upper swing arm
Lifting lug.
6. electric automobile coaxial-type In-wheel motor driving system synthesis integral structure according to claim 1, its feature
It is：The wheel hub is equipped with two spring bearings, is arranged in segmentation electromagnetic array axial flux motor side and list
Rows of planetary gear reduction unit side；Wherein, the spring bearing close to single planetary reducer side is kept off equipped with elastic stopping
Circle.
7. electric automobile coaxial-type In-wheel motor driving system synthesis integral structure according to claim 6, its feature
It is：The spring bearing is taper roll bearing.
8. electric automobile coaxial-type In-wheel motor driving system synthesis integral structure according to claim 1, its feature
It is：The disk braking system includes caliper and brake disc, and wherein caliper is installed by the lifting lug on electric machine casing,
Brake disc is bolted with wheel hub.
9. electric automobile coaxial-type In-wheel motor driving system synthesis integral structure according to claim 1, its feature
It is：The external splines and the junction of internal spline are equipped with oil sealing.
10. electric automobile coaxial-type In-wheel motor driving system synthesis integral structure according to claim 8, its feature
It is：The rectangular teeth that being used for, sensor is set is equipped between the brake disc and segmentation electromagnetic array axial flux motor
Circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711134447.8A CN107901751A (en) | 2017-11-16 | 2017-11-16 | Electric automobile coaxial-type In-wheel motor driving system synthesis integral structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711134447.8A CN107901751A (en) | 2017-11-16 | 2017-11-16 | Electric automobile coaxial-type In-wheel motor driving system synthesis integral structure |
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| CN107901751A true CN107901751A (en) | 2018-04-13 |
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| CN201711134447.8A Pending CN107901751A (en) | 2017-11-16 | 2017-11-16 | Electric automobile coaxial-type In-wheel motor driving system synthesis integral structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109017271A (en) * | 2018-10-10 | 2018-12-18 | 核心驱动科技（金华）有限公司 | A kind of electric car and its power drive unit |
| CN110504790A (en) * | 2019-08-26 | 2019-11-26 | 合肥骐骥电驱动技术有限公司 | A kind of high power density axial magnetic flux hub motor of short axial structure |
| CN110654224A (en) * | 2018-06-29 | 2020-01-07 | 比亚迪股份有限公司 | Wheel driving system and vehicle |
| CN116552236A (en) * | 2023-04-19 | 2023-08-08 | 东南大学 | Power transmission device for in-wheel motor driving unit |
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| CN103442918A (en) * | 2011-03-09 | 2013-12-11 | 沃尔沃拉斯特瓦格纳公司 | Wheel hub motor arrangement |
| CN104228549A (en) * | 2014-10-09 | 2014-12-24 | 上海交通大学 | Hub motor driving electric wheel with electromagnetism damping device |
| CN107117005A (en) * | 2017-04-27 | 2017-09-01 | 北京理工大学 | A kind of power transmission integrated electric wheel |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2009204016A (en) * | 2008-02-26 | 2009-09-10 | Hitachi Constr Mach Co Ltd | Traveling device |
| CN103442918A (en) * | 2011-03-09 | 2013-12-11 | 沃尔沃拉斯特瓦格纳公司 | Wheel hub motor arrangement |
| CN102384222A (en) * | 2011-11-22 | 2012-03-21 | 北京科技大学 | Hub reductor for mine electric drive heavy-duty car |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110654224A (en) * | 2018-06-29 | 2020-01-07 | 比亚迪股份有限公司 | Wheel driving system and vehicle |
| CN109017271A (en) * | 2018-10-10 | 2018-12-18 | 核心驱动科技（金华）有限公司 | A kind of electric car and its power drive unit |
| CN109017271B (en) * | 2018-10-10 | 2024-01-19 | 浙江盘毂动力科技有限公司 | Electric automobile and power driving device thereof |
| CN110504790A (en) * | 2019-08-26 | 2019-11-26 | 合肥骐骥电驱动技术有限公司 | A kind of high power density axial magnetic flux hub motor of short axial structure |
| CN116552236A (en) * | 2023-04-19 | 2023-08-08 | 东南大学 | Power transmission device for in-wheel motor driving unit |
| CN116552236B (en) * | 2023-04-19 | 2023-12-12 | 东南大学 | Power transmission device for in-wheel motor driving unit |
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Application publication date: 20180413 |
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