CN110071597A - Power failure-free internal rotor hub motor two keeps off speed change system and electric car - Google Patents
Power failure-free internal rotor hub motor two keeps off speed change system and electric car Download PDFInfo
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- CN110071597A CN110071597A CN201910487840.8A CN201910487840A CN110071597A CN 110071597 A CN110071597 A CN 110071597A CN 201910487840 A CN201910487840 A CN 201910487840A CN 110071597 A CN110071597 A CN 110071597A
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- planet carrier
- fixedly connected
- shell
- internal rotor
- hub motor
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- 230000005611 electricity Effects 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 229920003266 Leaf® Polymers 0.000 description 22
- 238000000034 method Methods 0.000 description 15
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- 230000001360 synchronised effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
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Classifications
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/006—Structural association of a motor or generator with the drive train of a motor vehicle
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Braking Arrangements (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a kind of power failure-free internal rotor hub motors two to keep off speed change system, is mainly made of internal rotor hub motor, No. 1 fastening screw, speed changer circular shell, knuckle, No. 2 fastening screws, speed changer right shell, No. 3 fastening screws, No. 1 electromagnetic brake, the first planetary gear train, one-way clutch, No. 2 electromagnetic brakes, the second planetary gear train, tire, wheel rim, rim bolt, rim nut, wheel hub, round nut, brake disc, caliper and caliper fastening screw.The invention also discloses a kind of electric cars, meet electric car to various demands such as dynamic property, economy, improve the comprehensive performance of electric car.
Description
Technical field
The invention belongs to electric car field, in particular to a kind of power failure-free internal rotor hub motor two keeps off speed change system
System and vehicle.
Background technique
The fast development of auto industry largely changes people's lives mode, improves people's lives matter
Amount.Automobile also brings many negative effects while bringing many convenient: largely consuming petroleum, natural gas etc.
Non-renewable energy resources discharge the toxic and harmful gas such as a large amount of carbon monoxide, nitrogen oxides and carbon dioxide isothermal chamber effect gas
Body generates much noise etc., brings immeasurable harm to people's lives environment.Nowadays, the worldwide energy
Crisis is got worse with environmental problem, moreover, world today's car ownership is rising year by year, then the brought above problem will
It is more acute.Therefore, current auto industry certainly will seek low noise, zero-emission, comprehensive energy utilization developing direction, exploitation has
The inevitable choice in epoch is not become already in the new-energy automobile of orthodox car.Electric car is that new-energy automobile is most important
Form, consumed electric energy are secondary energy sources, can obtain in several ways, avoid and consume excessively to non-renewable energy.
Meanwhile electric car has the advantages that comfortable clean, noise is low, free from environmental pollution, operation is simple and reliable and cost of use is low etc., quilt
Referred to as green car is a kind of no pollution truly, zero-emission vehicle.Therefore, electric car is Economic Sustainability hair
The final trend of inevitable outcome and development of automobile under exhibition trend.
According to the difference of wheel driving motor mode, electric car can be divided into again concentrates type motor-driven and Electric Motor Wheel
Drive form.Concentrate the power transmitting of type motor-driven generally need to be by the transmitting such as speed changer, differential mechanism, universal driving device
To driving wheel, structure is complicated for drive form, and transmission efficiency is low, and wheel is unable to independent control.And the automobile of In-wheel-motor driving form,
Motor can be then mounted directly on the drive wheel or near driving wheel, drive system is simple, and compact-sized, occupied space is few, passes
Efficiency of movement is high, and can carry out independent dynamics Controlling to each Electric Motor Wheel.Therefore, electric wheel truck is pursuing energy conservation and environmental protection
While, the comprehensive performance of vehicle is also improved to the maximum extent, meets demand of the people to driving pleasure.Therefore, electronic
Taking turns automobile is one of mainstream development trend of electric car.In-wheel-motor driving can be divided mainly into Direct wheel drives and hub motor is driven
Dynamic, the power source of Direct wheel drives generally uses inner rotor motor, and retarder is arranged between inner rotor motor and wheel, plays
The effect of deceleration torque increase, but the speed ratio of retarder is fixed；The power source of In-wheel motor driving generally uses external rotor electric machine,
The outer rotor of external rotor electric machine is connected with wheel, thus direct drive of wheel, and its transmission ratio is 1.Therefore, traditional electronic
Wheel drive system, either Direct wheel drives or In-wheel motor driving, the speed ratio of only one fixation of electronic wheel system, without
Speed ratio can rationally be switched according to the Real-road Driving Cycle of electric car, to meet the electric car in the form of In-wheel-motor driving to power
The requirement of property and economy.Therefore, the dynamic property and economy of electric car in order to balance is In-wheel-motor driving electric car
It is just seemed very necessary with speed changer.
Summary of the invention
The present invention has designed and developed a kind of gear of power failure-free internal rotor hub motor two speed change system, arranges in pairs or groups in one
Rotor hub motor is arranged two planetary gear trains and carries out deceleration torque increase as power source.Goal of the invention of the invention is to pass through
Two electromagnetic brakes and an one-way clutch carry out gear shift operation, meet driver according to the actual travel work of electric car
Condition switches over speed changer between different gears, while its response speed is rapid, and shift process moment completes, and power
Always it never interrupts, no shift shock, overcomes existing In-wheel-motor driving electric car two-gear transmission shift process complexity, rings
Answer the technological deficiency of characteristic difference.
The present invention has designed and developed a kind of electric car, is kept off and being become by using power failure-free internal rotor hub motor two
Speed system meets electric car to various demands such as dynamic property, economical, improves the comprehensive performance of electric car.
Technical solution provided by the invention are as follows:
Power failure-free internal rotor hub motor two keeps off speed change system, comprising:
Hub motor shell；
Internal rotor is rotatably supported at hub motor shell two sides center；
Motor shaft is fixedly connected with the internal rotor；
First electromagnetic brake shell is fixedly connected with the hub motor shell, and in first electromagnetic system
First annular groove is circumferentially arranged in dynamic device shell；
First magnet exciting coil is arranged in the first annular groove；
Frictional disk is fixedly connected with the motor shaft, and the frictional disk and the first electromagnetic brake shell
Gap setting；
First magnetic yoke, and the frictional disk gap setting, and first magnetic yoke is distributed along the circumference with bellmouth；
Driven disc is rotatably supported on the motor shaft, and the driven disc is evenly distributed the first blind hole；
First spring leaf, be arranged between the driven disc and first magnetic yoke, and first spring leaf with
The driven disc is fixedly connected；
One-way clutch, inner ring are fixedly connected with the driven disc；
First sun gear is fixedly connected with the motor shaft；
Multiple first planetary gears engage matching with first sun gear；
First ring gear engages matching with first planetary gear, and first ring gear is evenly distributed
Second blind hole；
First planet carrier, is equipped with ladder-like solid shafting, and first ring gear is rotatably supported at the first row
On the solid shafting of carrier；
First planet carrier lid is fixedly connected with the outer ring of the one-way clutch, and the first planet carrier lid with
The first planet carrier is fixedly connected；
Second magnetic yoke, is distributed along the circumference with bellmouth；
Second spring piece is arranged between first ring gear and second magnetic yoke, and the second spring
Piece is fixedly connected with first ring gear；
Second electromagnetic brake shell, and the second magnetic yoke gap setting, and in second electromagnetic brake
Second annular groove is circumferentially arranged in shell；
Second magnet exciting coil is arranged in the second annular groove；
Wherein, selective to the energization and power-off of first magnet exciting coil and the second magnet exciting coil selectivity
First magnetic yoke and the frictional disk is set to compress or make second magnetic yoke and the second electromagnetic brake shell to compress.
Preferably, further includes:
Case of transmission, the case of transmission include the first case of transmission and the second case of transmission, described first
Case of transmission is fixedly connected with second case of transmission, and first case of transmission and the hub motor shell
Body is fixedly connected with the second electromagnetic brake shell, and the first planet carrier is rotatably supported at first speed changer
On shell；
Second sun gear is fixedly connected with the first planet carrier；
Multiple second planetary gears engage matching with second sun gear；
Second planet carrier is equipped with ladder-like solid shafting, and second planet carrier is rotatably supported at described the
On two case of transmission；
Second planet carrier lid is rotatably supported on first case of transmission, and second planet carrier
Lid is fixedly connected with second planet carrier；
Second ring gear engages matching with second planetary gear, and second ring gear and described second becomes
Fast device shell is fixedly connected.
Preferably, further includes:
Wheel hub is fixedly connected with second planet carrier；
Brake disc is fixedly connected with the wheel hub；
Wheel rim is fixedly connected with the wheel hub；
Tire is fixedly connected with the wheel rim；
Knuckle is fixedly connected with first case of transmission, and the knuckle is solid by suspension and car body
Fixed connection；
Caliper is fixedly connected with the knuckle.
Preferably, further includes:
First spring catch passes through first magnetic yoke and first spring leaf, and protrudes into the first of the driven disc
In blind hole；
Second spring pin passes through second magnetic yoke and the second spring piece, and protrudes into first ring gear
In second blind hole.
Preferably, further includes:
First friction facing is embedded on the frictional disk, and first friction facing is located at the frictional disk
Between first magnetic yoke；
Second friction facing is embedded on the second electromagnetic brake shell, and second friction facing with
The second magnet exciting coil gap setting, second friction facing are located at second magnetic yoke and second electromagnetic brake
Between shell.
Preferably, the hub motor shell includes first shell and stator case, and the first shell and institute
Stator case is stated to be fixedly connected；And
Further include:
Winding is fixed on the stator case；
Permanent magnet is fixed on the internal rotor.
Preferably, the protrusion that the first planet carrier is formed by first sun gear end face is to first sun
Wheel carries out axial limiting；
Second planet carrier carries out axis to second sun gear by the protrusion that second sun gear end face is formed
To limit；
First case of transmission carries out axial limiting to first ring gear by gasket.
Preferably, when the inner ring of the one-way clutch rotates forward relative to its outer ring, the one-way clutch engagement,
When the outer ring of the one-way clutch rotates forward relative to its inner ring, the one-way clutch is disconnected.
Preferably, first planetary gear two sides have cylindrical shaft；
The first planet carrier and the first planet carrier lid have radial outside circular hole；
Wherein, the cylindrical shaft of first planetary gear and the first planet carrier and the diameter of the first planet carrier lid are outside
Mother rib lateral rotundum Matching installation；
Second planetary gear two sides have cylindrical shaft；
Second planet carrier and the second planet carrier lid have radial outside circular hole；
Wherein, the diameter of the cylindrical shaft of second planetary gear and second planet carrier and the second planet carrier lid is outside
Mother rib lateral rotundum Matching installation.
A kind of electric car keeps off speed change system using the power failure-free internal rotor hub motor two.
Compared with prior art, the present invention possessed by the utility model has the advantages that
1, power failure-free internal rotor hub motor two provided by the invention keeps off speed change system, and axial dimension is small, occupies
Space is small, and structure is simple, and compact layout is reasonable, and integration degree is high, the convenient arrangement near inside wheel or wheel.
2, power failure-free internal rotor hub motor two provided by the invention keeps off speed change system, and shift process need to only pass through
The on-off for controlling two electromagnetic brakes can be automatically performed, and control is simple and convenient, and shift process is easy to accomplish, and shift process is only
There is a few tens of milliseconds, be swift in response, response characteristic is good.
3, power failure-free internal rotor hub motor two provided by the invention keeps off speed change system, in shift process, unidirectionally
Clutch is to complete to engage by critical dotted state moment, and whole process does not have any sluggishness, therefore power begins in shift process
It never interrupts eventually, no shift shock, ride comfort is good.
4, power failure-free internal rotor hub motor two provided by the invention keeps off speed change system, without to one-way clutch into
Row control, the switching between the engagement and disconnection of one-way clutch can be automatically performed according to direction of rotation.
Detailed description of the invention
Fig. 1 is the mechanical structure signal that power failure-free internal rotor hub motor two of the present invention keeps off speed change system
Figure.
Fig. 2 is the structural principle schematic diagram that power failure-free internal rotor hub motor two of the present invention keeps off speed change system.
Fig. 3 is that power failure-free internal rotor hub motor two of the present invention gear speed change system is in forward gear state
When power transmission line schematic diagram.
Fig. 4 is that power failure-free internal rotor hub motor two of the present invention gear speed change system is in advance second gear state
When power transmission line schematic diagram.
Fig. 5 is that power failure-free internal rotor hub motor two of the present invention gear speed change system is in when reversing gear state
Power transmission line schematic diagram.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
As shown in Figure 1, the present invention provides a kind of power failure-free internal rotor hub motors two to keep off speed change system, the nothing is dynamic
Power interrupts internal rotor hub motor two and keeps off speed change system one internal rotor hub motor of collocation as power source, and two planets are arranged
Train carries out deceleration torque increase, and is shifted gears by two electromagnetic brakes and an one-way clutch, allows driver's root
According to the Real-road Driving Cycle of electric car, speed changer is switched between different gears, it is different to adapt to electric car
Driving cycle, while its response speed is rapid, shift process moment completes, and power never interrupts always, no shift shock, full
Foot electric car improves the comprehensive performance of electric car to various demands such as dynamic property, economy.
Power failure-free internal rotor hub motor two provided by the invention keeps off speed change system mainly by internal rotor hub motor
100, speed changer circular shell 110, knuckle 111, speed changer right shell 113, No. 1 electromagnetic brakes 200, the first planetary gears
Be 300, one-way clutch, 310, No. 2 electromagnetic brakes 400, the second planetary gear train 500, tire 601, wheel rim 602, wheel hub 605,
Brake disc 607 and caliper 608 are constituted.
Internal rotor hub motor 100 includes motor left shell 101, internal rotor 102, permanent magnet 103, winding 104, shell
Fastening screw 105,106, No. 1 bearings 107 of stator case and motor shaft 108；
Wherein, motor left shell 101 is fixedly connected by shell fastening screw 105 with stator case 106, permanent magnet
103 are fixed on internal rotor 102, and winding 104 is fixed on stator case 106, motor left shell 101 and stator case 106
It is respectively supported by 1 107 internal rotor 102 of No. 1 bearing, and axis is carried out to No. 1 bearing 107 by the shaft shoulder of internal rotor 102
To limit, internal rotor 102 is equipped with hollow splined hole, connect with 108 left end spline of motor shaft；No. 1 fastening screw 109 is by speed change
Device circular shell 110 is fixedly connected with stator case 106, and No. 2 fastening screws 112 are by knuckle 111 and speed changer circular shell
110 are fixedly connected, and speed changer right shell 113 is fixedly connected by No. 3 fastening screws 114 with speed changer circular shell 110, braking
Caliper 608 is fixedly connected by pincers fastening screw 609 with knuckle 111, and knuckle 111 is fixedly connected with the vehicle body by suspension
To fixed, therefore, motor left shell 101, stator case 106, speed changer circular shell 110, speed changer right side shell
Body 113 and caliper 608 are fixed.
No. 1 electromagnetic brake 200 is located at 100 right side of internal rotor hub motor, including 201, No. 1 electromagnetism of No. 4 fastening screws
204, No. 1 spring catch 205 of the spring leaf of friction facing 203,1 of brake casing 202,1, frictional disk 206, axle sleeve 207,5
208, No. 1 retaining rings 209 of fastening screw, snap ring 210,2 bearing 211,1 magnet exciting coil 212, No. 1 magnetic yokes 213 and driven discs
214；
Wherein, No. 1 electromagnetic brake shell 202 is fixedly connected by No. 4 fastening screws 201 with stator case 106, No. 1 electricity
Magnetic brake shell 202 is equipped with the annular groove of opening to the right, is disposed with No. 1 magnet exciting coil 212 in annular groove；No. 1 friction facing
203 are embedded in 206 right side of frictional disk, and frictional disk 206 is located at 202 right side of No. 1 electromagnetic brake shell, and with No. 1 electromagnetic system
There are certain interval between dynamic device shell 202, frictional disk 206 is connect with 108 spline of motor shaft, and passes through the axis of motor shaft 108
Shoulder and axle sleeve 207 carry out axial limiting；No. 1 magnetic yoke 213 is located at 206 right side of frictional disk, and it is right that driven disc 214 is located at No. 1 magnetic yoke 213
Side, No. 1 spring leaf 204 is between No. 1 magnetic yoke 213 and driven disc 214, and its left and right end face and No. 1 magnetic yoke 213 and driven disc
214 are in close contact, and No. 1 spring leaf 204 is fixedly connected by No. 5 fastening screws 208 with driven disc 214, No. 1 spring leaf 204 and No. 5
No. 1 retaining ring 209 is disposed between fastening screw 208, driven disc 214 extends to form to the right hollow shaft, and passes through 2 No. 2 bearings
211 are supported on motor shaft 108, and by 207 axial limiting of axle sleeve, No. 1 bearing 211 on right side passes through No. 1 bearing 211 in left side
210 axial limiting of snap ring；No. 1 magnetic yoke 213 is provided with bellmouth, and driven disc 214 is equipped with the blind hole of opening to the left, No. 1 spring catch 205
It across No. 1 magnetic yoke 213 and No. 1 spring leaf 204, and protrudes into the blind hole of driven disc 214, the conical surface of No. 1 spring catch 205 and No. 1
The conical surface of the bellmouth of magnetic yoke 213 is in close contact, the right end face of the vertical end face of No. 1 spring catch 204 and No. 1 spring leaf 204
It is in close contact.
First planetary gear train 300 is single single-planetary gear train, is located at 200 right side of No. 1 electromagnetic brake, including first
Planetary gear 301, the first sun gear 302, first planet carrier 303, first planet carrier lid 304, first planet carrier fastening screw 305,
First bearing 307 of ring gear 306,3, gasket 308 and No. 4 bearing 309；
Wherein, the first sun gear 302 is connect with 108 right end spline of motor shaft, 302 left end face of the first sun gear and motor
The shaft shoulder of axis 108 contacts, and right side forms protrusion, and contacts with 303 left end face of first planet carrier, thus to the first sun gear
302 carry out axial limiting；First planetary gear 301 stretches out cylindrical shaft to two sides, and protrudes into first planet carrier 303 and first planet carrier
It is in the radial outside circular hole of lid 304 and free to rotate, pass through first between first planet carrier 303 and first planet carrier lid 304
Planet carrier fastening screw 305 is fixedly connected, and first planet carrier 303 extends to form to the right ladder-like solid shafting, and passes through No. 4 bearings
309 are supported on speed changer circular shell 110, and the shaft shoulder of the solid shafting of first planet carrier 303 carries out axial direction to No. 4 bearings 309
Limit；First ring gear 306, which is shunk to the right, forms hollow shaft, and the reality of first planet carrier 303 is supported on by No. 3 bearings 307
In mandrel, No. 3 bearings 307 carry out axial limiting by the shaft shoulder of the solid shafting of first planet carrier 303, and in first planet carrier
The gasket 308 being disposed on 303 solid shafting between the first ring gear 306 and speed changer circular shell 110, thus to
One ring gear 306 carries out axial limiting, and the first ring gear 306 is equipped with the blind hole of opening to the right；First planet carrier lid 304 is to the left
Hollow shaft is extended to form, and is supported on one-way clutch 310；
In the present embodiment, as a preference, the planet row characteristic parameter of the first planetary gear train 300 is greater than 1, planet row
Characteristic parameter is that machinery field usually defines, and refers to the ratio between ring gear and the number of teeth of sun gear in planetary gear train.
One-way clutch 310 is located between the hollow shaft of driven disc 214 and the hollow shaft of first planet carrier lid 304, unidirectionally
The inner ring of clutch 310 and outer ring are machined with internal spline and external splines, the inner ring and driven disc 214 of one-way clutch 310 respectively
Hollow shaft spline connection, the outer ring of one-way clutch 310 is connect with the hollow shaft spline of first planet carrier lid 304；Unidirectionally from
When the inner ring of clutch 310 rotates forward relative to its outer ring, one-way clutch 310 is engaged；The outer ring of one-way clutch 310 is opposite
It is enclosed when rotating forward in the inner, one-way clutch 310 disconnects.
No. 2 electromagnetic brakes 400 are located at 300 right side of the first planetary gear train, including No. 2 electromagnetic brake shell 401,2
406, No. 2 friction facings 407,2 of spring catch of fastening screw 405,2 of retaining ring 404,6 of spring leaf 403,2 of magnetic yoke 402,2
Number magnet exciting coil 408 and No. 7 fastening screw 409；
Wherein, No. 2 electromagnetic brake shells 401 are fixedly connected by No. 7 fastening screws 409 with speed changer circular shell 110,
No. 2 electromagnetic brake shells 401 are equipped with the annular groove of opening to the left, are disposed with No. 2 magnet exciting coils 408, while ring in annular groove
No. 2 friction facings 407 are inlaid at shape slot；No. 2 magnetic yokes 402 are located at 401 left side of No. 2 electromagnetic brake shells, No. 2 spring leafs
403 between No. 2 magnetic yokes 402 and the first ring gear 306, and its left and right end face and No. 2 magnetic yokes 402 and the first ring gear 306
It is in close contact, No. 2 spring leafs 403 are fixedly connected by No. 6 fastening screws 405 with the first ring gear 306, No. 2 spring leafs 403 and 6
No. 2 retaining rings 404 are disposed between number fastening screw 405；No. 2 magnetic yokes 402 are provided with bellmouth, and No. 2 spring catch 406 pass through No. 2 magnetic
Yoke 402 and No. 2 spring leaf 403, and protrude into the blind hole of the first ring gear 306, the conical surface and No. 2 magnetic yokes of No. 2 spring catch 406
The conical surface of 402 bellmouth is in close contact, and the vertical end face of No. 2 spring catch 406 and the left end face of No. 2 spring leafs 403 are close
Contact.
Second planetary gear train 500 is single single-planetary gear train, is located at 400 right side of No. 2 electromagnetic brakes, including second
504, No. 5 planetary gear 501, the second sun gear 502, the second planet carrier 503, the second planet carrier lid bearings 505, the second planet carriers are tight
Gu screw 506, the second ring gear 507 and No. 6 bearing 508；
Wherein, the second sun gear 502 is connect with the solid shafting right end spline of first planet carrier 303, and the second sun gear 502 is left
Side end face is contacted with the shaft shoulder of the solid shafting of first planet carrier 303, and right side forms protrusion, and with 503 left-hand end of the second planet carrier
Face contact, to carry out axial limiting to the second sun gear 502；Second ring gear 507 is welded on speed changer circular shell 110
On；Second planetary gear 501 stretches out cylindrical shaft to two sides, and the diameter for protruding into the second planet carrier 503 and the second planet carrier lid 504 is outside
It is in mother rib lateral rotundum and free to rotate, pass through the second planet carrier fastening screw between the second planet carrier 503 and the second planet carrier lid 504
506 are fixedly connected；Second planet carrier lid 504 extends to form hollow shaft to the left, and is supported on speed changer ring by No. 5 bearings 505
On shape shell 110, the shaft shoulder of the hollow shaft of the second planet carrier lid 504 carries out axial limiting to No. 5 bearings 505；
In the present embodiment, as a preference, the planet row characteristic parameter of the second planetary gear train 500 is greater than 1；
Second planet carrier 503 extends to form to the right ladder-like solid shafting, and connect with 605 inner hole spline of wheel hub, the second row
No. 6 bearings 508 are disposed between the solid shaft transmission right shell 113 of carrier 503 to be supported, and pass through the second planet carrier
The shaft shoulder of 503 solid shafting carries out axial limiting to No. 6 bearings 508；The hollow shaft of wheel hub 605 protrudes into 602 centre bore of wheel rim,
Wheel hub 605, brake disc 607 are fixedly connected by rim bolt 603 and rim nut 604 with wheel rim 602, wheel rim 602 and and tire
601 are connected；The solid shafting right end of second planet carrier 503 is machined with external screw thread, and is threadedly coupled with round nut 606, and round nut
606 left side and the right end face contact of wheel hub 605, to carry out axial restraint to wheel hub 605.
The present invention is in assembling process, by internal rotor hub motor 100, No. 1 fastening screws 109, speed changer circular shells
110,300, No. 2 fastening screw 114,1 of speed changer right shell 113,3 electromagnetic brake 200, the first planetary gear train electromagnetism
Brake 400, the second planetary gear train 500 are used as a power assembly, connect by the way that No. 2 fastening screws 112 and knuckle 111 are fixed
It connects, the solid shafting of the second planet carrier 503 stretched out by right end is fixedly connected with wheel rim 602 and wheel hub 605, and caliper 608 is logical
Caliper fastening screw 609 is crossed to be fixedly connected with knuckle 111.
As shown in Fig. 2, indicating that the power failure-free internal rotor hub motor two keeps off the main connection pass of speed change system
System；Power failure-free internal rotor hub motor two provided by the invention keeps off speed change system, and there are three types of operating modes altogether: forward gear
State；Advance second gear state；It reverses gear state；
The working principle of Three models is illustrated separately below: in terms of rotation speed relation, when setting electric car advances
The direction of rotation of wheel is positive direction, and wheel direction of rotation is negative direction when retroversion；
1, forward gear state: when electric car is in forward gear state, No. 1 magnet exciting coil 212 is powered off, and No. 2 are encouraged
Magnetic coil 408 is powered；At this point, No. 1 magnetic yoke 213 and No. 1 friction facing 203 separates under the action of No. 1 spring leaf 204, eliminate
Pressing force between frictional disk 206 and No. 1 magnetic yoke 213；No. 2 magnet exciting coils 408 attract No. 2 magnetic yokes 402 to press to No. 2 friction linings
Piece 407 engages No. 2 magnetic yoke 402 and No. 2 electromagnetic brake shells 401, and then makes No. 2 spring leafs 403 and the first ring gear
306 engage with No. 2 electromagnetic brake shells 401, and the first ring gear 306 is fixed, and internal rotor hub motor 100 exports forward direction
Torque, motor shaft 108 is synchronous with internal rotor 102 to be rotated forward, and sets the revolving speed of motor shaft 108 at this time as n, then the first sun gear 302
Revolving speed be n because the first ring gear 306 is fixed, therefore its revolving speed is 0, then public according to single single-planetary gear train revolving speed
The revolving speed of formula, the revolving speed and first planet carrier lid 304 that can obtain first planet carrier 303 is(k1For the first planetary gear train
300 planet row characteristic parameter, and k1> 1), then the revolving speed of the outer ring of the revolving speed and one-way clutch 310 of the second sun gear 502
It isAt this point, the outer ring of one-way clutch 310 rotates forward relative to its inner ring, one-way clutch 310 is disconnected, unidirectionally
The inner ring revolving speed of clutch 310 is 0, and the revolving speed of driven disc 214 and No. 1 magnetic yoke 213 is also 0；Because of the second ring gear 507 and change
Fast device circular shell 110 is fixedly connected, therefore its revolving speed is 0, then according to single single-planetary gear train revolving speed formula, can obtain the second row
The revolving speed of carrier 503 is(k2For the planet row characteristic parameter of the second planetary gear train 500, and k2> 1), then
The revolving speed of wheel hub 605, wheel rim 602 and tire 601 is
Therefore, as shown in figure 3, power is successively through motor shaft 108, first when electric car is in forward gear state
Sun gear 302, the first planetary gear 301, first planet carrier 303, the second sun gear 502, the second planetary gear 501, the second planet carrier
503, wheel hub 605, rim bolt 603, wheel rim 602 pass to tire 601, so that electric car be driven to move forward；At this point, nothing
The gear transmission ratio that power interruption internal rotor hub motor two keeps off speed change system is (k1+1)(k2+1)。
2, it advance second gear state: when electric car is switched to advance second gear state by forward gear state, is first encouraged to No. 1
Magnetic coil 212 is powered, and No. 2 magnet exciting coils 408 still remain powered on；At this point, No. 1 magnet exciting coil 212 attracts No. 1 magnetic yoke 213 to press to
Frictional disk 206 engages No. 1 magnetic yoke 213 with frictional disk 206, and then makes No. 1 spring leaf 204 and driven disc 214 and frictional disk
206 engagements；Internal rotor hub motor 100 exports forward torque, and motor shaft 108 is synchronous with internal rotor 102 to be rotated forward, and sets electric at this time
The revolving speed of arbor 108 is n, when being kept off by forward gear state aware, one, No. 1 magnetic yoke 213, driven disc 214 and one-way clutch
The revolving speed of 310 inner ring is 0, first planet carrier 303, first planet carrier lid 304 and one-way clutch 310 the revolving speed of outer ring beFrictional disk 206 is rotated forward with motor shaft 108 is synchronous, therefore its revolving speed is n, then frictional disk 206 drives No. 1 213 turns of magnetic yoke
It is dynamic, so that its revolving speed is increased sharply since 0, increases in the revolving speed of No. 1 magnetic yoke 213Before, one-way clutch 310
Outer ring rotates forward relative to its inner ring always, and one-way clutch 310 disconnects, when the revolving speed of No. 1 magnetic yoke 213 increases to
When, the inner ring of one-way clutch 310 is identical as outer ring revolving speed, and one-way clutch 310 is in the critical dotted state of engagement；At this point, 2
Number magnet exciting coil 408 powers off, and under the action of No. 2 spring leaf 403, eliminates No. 2 magnetic yoke 402 and No. 2 electromagnetic brake shells
Pressing force between 401, the first ring gear 306 is free to rotate, under the drive of frictional disk 206, the revolving speed of No. 1 magnetic yoke 213
It continues growing, and moment is greater thanAnd at this time the inner ring revolving speed moment of one-way clutch 310 be greater than its outer ring revolving speed, i.e.,
The inner ring of one-way clutch 310 rotates forward relative to its outer ring, then 310 moment of one-way clutch is become engaging from critical dotted state
State, power pass to its outer ring by the inner ring of one-way clutch 310, and drive its outer ring revolving speed is synchronous to increase；Frictional disk 206
Continue drive No. 1 magnetic yoke 213 revolving speed byIncreasing is n, and then the two rotates synchronously, in the process, one-way clutch
The revolving speed of the inner ring of device 310 and the revolving speed of outer ring, first planet carrier 303 and first planet carrier lid 304 byIt synchronizes to increase and is
N, according to single single-planetary gear train revolving speed formula, it is n, No. 2 magnetic yokes 402 and 2 that the revolving speed of the first ring gear 306, which is also increased by 0,
The revolving speed of number spring leaf 403 is also n by 0 synchronous increase with the revolving speed of the first ring gear 306, in entire shift process, unidirectionally
Clutch 310 is to complete to engage by critical dotted state moment, and whole process does not have any sluggishness, therefore power in shift process
Always it never interrupts；The revolving speed of first planet carrier 303 byAfter becoming n, the revolving speed of the second sun gear 502 also becomes n, because
It is fixedly connected for the second ring gear 507 with speed changer circular shell 110, therefore its revolving speed is 0, then according to single single-planetary gear train
Revolving speed formula, the revolving speed that can obtain the second planet carrier 503 areThen the revolving speed of wheel hub 605, wheel rim 602 and tire 601 is
Therefore, as shown in figure 4, power is through motor shaft 108 by two lines when electric car is in advance second gear state
First planet carrier 303 is passed to, first article successively passes to through motor shaft 108, the first sun gear 302, the first planetary gear 301
One planet carrier 303, Article 2 successively pass to the first row through motor shaft 108, No. 1 electromagnetic brakes 200, one-way clutch 310
Carrier 303, then power couples at first planet carrier 303, so successively through first planet carrier 303, the second sun gear 502,
Second planetary gear 501, the second planet carrier 503, wheel hub 605, rim bolt 603, wheel rim 602 pass to tire 601, to drive
Electric car moves forward；At this point, the second gear transmission ratio that power failure-free internal rotor hub motor two keeps off speed change system is (k2+
1)。
3, reverse gear state: when electric car, which is in, reverses gear state, No. 1 magnet exciting coil 212 is powered off, No. 2 magnet exciting coils 408
It is powered；At this point, No. 1 magnetic yoke 213 and No. 1 friction facing 203 separates under the action of No. 1 spring leaf 204, frictional disk is eliminated
Pressing force between 206 and No. 1 magnetic yokes 213；No. 2 magnet exciting coils 408 attract No. 2 magnetic yokes 402 to press to No. 2 friction facings 407, make
No. 2 magnetic yoke 402 and No. 2 electromagnetic brake shells 401 engage, and then make No. 2 spring leafs 403 and the first ring gear 306 and No. 2 electricity
Magnetic brake shell 401 engages, and the first ring gear 306 is fixed, and internal rotor hub motor 100 exports negative sense torque, motor
The reversion synchronous with internal rotor 102 of axis 108, and set the revolving speed of motor shaft 108 at this time as-n, then the revolving speed of the first sun gear 302 for-
N, because the first ring gear 306 is fixed, therefore its revolving speed is 0, then according to single single-planetary gear train revolving speed formula, can obtain the
The revolving speed of one planet carrier 303 and the revolving speed of first planet carrier lid 304 areThen the revolving speed of the second sun gear 502 and
The revolving speed of the outer ring of one-way clutch 310 isAt this point, the inner ring of one-way clutch 310 is with respect to its outer ring to forward
Dynamic, one-way clutch 310 combines, and the inner ring of one-way clutch 310 is rotated synchronously with outer ring, and revolving speed isDriven disc
214 are also with the revolving speed of No. 1 magnetic yoke 213Because of the second ring gear 507 and the fixed company of speed changer circular shell 110
It connects, therefore its revolving speed is 0, then according to single single-planetary gear train revolving speed formula, the revolving speed that can obtain the second planet carrier 503 isThen the revolving speed of wheel hub 605, wheel rim 602 and tire 601 is
Therefore, as shown in figure 5, power is successively through motor shaft 108, first sun when electric car is in and reverses gear state
Take turns the 302, first planetary gear 301, first planet carrier 303, the second sun gear 502, the second planetary gear 501, the second planet carrier 503,
Wheel hub 605, rim bolt 603, wheel rim 602 pass to tire 601, so that electric car be driven to travel backward；At this point, unpowered
Interrupting internal rotor hub motor two and keeping off the back gear ratio of speed change system is (k1+1)(k2+1)。
Although the embodiments of the present invention have been disclosed as above, but it is not limited in listed fortune in specification and embodiments
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily real
Now other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is not limited to
Specific details and legend shown and described herein.
Claims (10)
1. power failure-free internal rotor hub motor two keeps off speed change system characterized by comprising
Hub motor shell；
Internal rotor is rotatably supported at hub motor shell two sides center；
Motor shaft is fixedly connected with the internal rotor；
First electromagnetic brake shell is fixedly connected with the hub motor shell, and in first electromagnetic brake
First annular groove is circumferentially arranged in shell；
First magnet exciting coil is arranged in the first annular groove；
Frictional disk is fixedly connected with the motor shaft, and the frictional disk and the first electromagnetic brake body clearance
Setting；
First magnetic yoke, and the frictional disk gap setting, and first magnetic yoke is distributed along the circumference with bellmouth；
Driven disc is rotatably supported on the motor shaft, and the driven disc is evenly distributed the first blind hole；
First spring leaf, be arranged between the driven disc and first magnetic yoke, and first spring leaf with it is described
Driven disc is fixedly connected；
One-way clutch, inner ring are fixedly connected with the driven disc；
First sun gear is fixedly connected with the motor shaft；
Multiple first planetary gears engage matching with first sun gear；
First ring gear engages matching with first planetary gear, and first ring gear is evenly distributed second
Blind hole；
First planet carrier, is equipped with ladder-like solid shafting, and first ring gear is rotatably supported at the first planet carrier
Solid shafting on；
First planet carrier lid is fixedly connected with the outer ring of the one-way clutch, and the first planet carrier lid with it is described
First planet carrier is fixedly connected；
Second magnetic yoke, is distributed along the circumference with bellmouth；
Second spring piece, be arranged between first ring gear and second magnetic yoke, and the second spring piece with
First ring gear is fixedly connected；
Second electromagnetic brake shell, and the second magnetic yoke gap setting, and in the second electromagnetic brake shell
Circumferential setting second annular groove；
Second magnet exciting coil is arranged in the second annular groove；
Wherein, to the energization and power-off of first magnet exciting coil and the second magnet exciting coil selectivity, selective makes institute
It states the first magnetic yoke and the frictional disk compresses or make second magnetic yoke and the second electromagnetic brake shell to compress.
2. power failure-free internal rotor hub motor two as described in claim 1 keeps off speed change system, which is characterized in that also wrap
It includes:
Case of transmission, the case of transmission include the first case of transmission and the second case of transmission, first speed change
Device shell is fixedly connected with second case of transmission, and first case of transmission and the hub motor shell and
The second electromagnetic brake shell is fixedly connected, and the first planet carrier is rotatably supported at first case of transmission
On；
Second sun gear is fixedly connected with the first planet carrier；
Multiple second planetary gears engage matching with second sun gear；
Second planet carrier is equipped with ladder-like solid shafting, and second planet carrier is rotatably supported at described second and becomes
On fast device shell；
Second planet carrier lid is rotatably supported on first case of transmission, and the second planet carrier lid with
Second planet carrier is fixedly connected；
Second ring gear engages matching, and second ring gear and second speed changer with second planetary gear
Shell is fixedly connected.
3. power failure-free internal rotor hub motor two as claimed in claim 2 keeps off speed change system, which is characterized in that also wrap
It includes:
Wheel hub is fixedly connected with second planet carrier；
Brake disc is fixedly connected with the wheel hub；
Wheel rim is fixedly connected with the wheel hub；
Tire is fixedly connected with the wheel rim；
Knuckle is fixedly connected with first case of transmission, and the knuckle connects by the way that suspension and car body are fixed
It connects；
Caliper is fixedly connected with the knuckle.
4. power failure-free internal rotor hub motor two as claimed in claim 3 keeps off speed change system, which is characterized in that also wrap
It includes:
First spring catch passes through first magnetic yoke and first spring leaf, and protrudes into the first blind hole of the driven disc
In；
Second spring pin passes through second magnetic yoke and the second spring piece, and protrudes into the second of first ring gear
In blind hole.
5. power failure-free internal rotor hub motor two as claimed in claim 4 keeps off speed change system, which is characterized in that also wrap
It includes:
First friction facing is embedded on the frictional disk, and first friction facing is located at the frictional disk and institute
It states between the first magnetic yoke；
Second friction facing is embedded on the second electromagnetic brake shell, and second friction facing with it is described
Second magnet exciting coil gap setting, second friction facing are located at second magnetic yoke and the second electromagnetic brake shell
Between.
6. the power failure-free internal rotor hub motor two as described in any one of claim 2-5 keeps off speed change system, feature
It is, the hub motor shell includes first shell and stator case, and the first shell and the stator case are solid
Fixed connection；And
Further include:
Winding is fixed on the stator case；
Permanent magnet is fixed on the internal rotor.
7. power failure-free internal rotor hub motor two as claimed in claim 6 keeps off speed change system, which is characterized in that described the
One planet carrier carries out axial limiting to first sun gear by the protrusion that first sun gear end face is formed；
The protrusion that second planet carrier is formed by second sun gear end face carries out axial limit to second sun gear
Position；
First case of transmission carries out axial limiting to first ring gear by gasket.
8. power failure-free internal rotor hub motor two as claimed in claim 7 keeps off speed change system, which is characterized in that the list
When being rotated forward to the inner ring of clutch relative to its outer ring, the one-way clutch engagement, the outer ring phase of the one-way clutch
When rotating forward to its inner ring, the one-way clutch is disconnected.
9. power failure-free internal rotor hub motor two as claimed in claim 8 keeps off speed change system, which is characterized in that described the
One planetary gear two sides have cylindrical shaft；
The first planet carrier and the first planet carrier lid have radial outside circular hole；
Wherein, the radial outside of the cylindrical shaft of first planetary gear and the first planet carrier and first planet carrier lid circle
Hole Matching installation；
Second planetary gear two sides have cylindrical shaft；
Second planet carrier and the second planet carrier lid have radial outside circular hole；
Wherein, the radial outside of the cylindrical shaft of second planetary gear and second planet carrier and the second planet carrier lid circle
Hole Matching installation.
10. a kind of electric car, which is characterized in that use power failure-free internal rotor wheel hub electricity as claimed in claims 1-9
Machine two keeps off speed change system.
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| CN112440727A (en) * | 2019-08-27 | 2021-03-05 | 比亚迪股份有限公司 | Wheel hub electric drive system, driving wheel and vehicle |
| CN115257352A (en) * | 2022-07-25 | 2022-11-01 | 重庆青山工业有限责任公司 | Stepless speed regulation dual-motor hub driving system and driving method |
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|---|---|
| CN110071597B (en) | 2023-12-29 |
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