CN105186770A - Differential dual-output motor - Google Patents
Differential dual-output motor Download PDFInfo
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- CN105186770A CN105186770A CN201510462682.2A CN201510462682A CN105186770A CN 105186770 A CN105186770 A CN 105186770A CN 201510462682 A CN201510462682 A CN 201510462682A CN 105186770 A CN105186770 A CN 105186770A
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Abstract
The invention belongs to the technical field of motors, and discloses a differential dual-output motor. The differential dual-output motor comprises a motor shell body, a stator and a rotor, wherein the rotor is relatively fixed to the motor shell body, the rotor is arranged inside the stator in a rotated manner, an axis part of the rotor is of a cavity structure, a differential mechanism is arranged in a cavity body at the axis part of the rotor, and the differential mechanism comprises two coaxial planetary gears which are oppositely arranged and two coaxial half axle gears which are oppositely arranged; and a planetary gear shaft of the differential mechanism is relatively fixed to the rotor, and the two half axle gears of the differential mechanism are respectively connected with two output half shafts of the motor. The differential dual-output motor adopts the dual-half-shaft output and hollow rotor structure design, integrates the differential mechanism in the hollow cavity body of the rotor, achieves the dual-half-shaft differential output function, greatly reduces the occupied space of a power assembly, and has the advantages of high output efficiency, low energy loss, energy saving and environmental protection.
Description
Technical field
The invention belongs to technical field of motors, particularly relate to the motor of electric automobile.
Background technology
Power assembly of electric automobile, mainly comprise motor and differential mechanism, be connected by train of reduction gears between motor with differential mechanism, in the power assembly of existing electric automobile (as the brand automobile such as tesla, BYD), differential output shaft and rotor axis be arranged in parallel, motor and differential mechanism are arranged side by side, and motor is positioned at differential output shaft side, takies volume relatively large.Rotor axis is connected by gear train with differential mechanism.Complex structure, energy loss is large, and transmission efficiency is low.
Summary of the invention
The object of the invention is, the problem comparatively large for above-mentioned existing power assembly of electric automobile volume, complex structure, transmission efficiency are low, proposes a kind of motor scheme of differential dual output.
The present invention for achieving the above object, the technical scheme proposed is: a kind of differential dual-output motor, comprise electric machine casing, establish stators and rotators in electric machine casing, stator is relative with described electric machine casing fixing, and rotor is rotary setting in stator, it is characterized in that, rotor axis place is cavity structure, is provided with box of tricks in the cavity at rotor axis place, and box of tricks comprises two planetary gears that concentric is oppositely arranged and two axle shaft gears that concentric is oppositely arranged; The planet pin of box of tricks is relative with rotor fixing, two axle shaft gears of box of tricks connect two output axle shafts of motor respectively, the axle center of two output axle shafts is coaxial with rotor axis, and the output of two output axle shafts stretches out from electric machine casing two ends respectively.
Particularly, described electric machine casing comprises tubular support and is separately positioned on two end caps at support two ends, and stator is fixed on inboard wall of base, establishes hollow middle shaft in the middle of rotor, the hollow middle shaft two ends of rotor respectively by bearing assemble on two end caps.Described box of tricks is arranged in the hollow middle shaft of rotor.
As the distortion of rotor set-up mode, rotor is unsettled to be arranged in stator, and each output axle shaft passes through together with at least two bearing assembles with rotor.
The set-up mode of described box of tricks in the hollow middle shaft of rotor has two kinds at least: the first, box of tricks comprises box of tricks housing, box of tricks housing and hollow middle shaft inwall are fixed, the planetary gear shaft of box of tricks is assemblied on box of tricks housing, the axle shaft gear of box of tricks by bearing assemble on box of tricks housing.The second, box of tricks does not establish housing, and the planetary gear shaft of box of tricks is directly assemblied on the inwall of the hollow middle shaft of rotor, the axle shaft gear of box of tricks by bearing assemble in the hollow middle shaft of rotor.
Two output axle shafts can be assembled together respectively by bearing and two end caps, also can be assembled together respectively by the hollow middle shaft of bearing and rotor.
Be out of shape as one, the invention provides another kind of differential dual-output motor, comprise electric machine casing, establish stators and rotators in electric machine casing, stator is relative with described housing fixing, and rotor is rotary setting in stator, it is characterized in that, rotor axis place is cavity structure, is provided with box of tricks in the cavity at rotor axis place, and box of tricks comprises two planetary gears that concentric is oppositely arranged and two axle shaft gears that concentric is oppositely arranged; The planetary gear shaft of box of tricks is relative with rotor fixing, and two axle shaft gears of box of tricks are respectively used to connect output axle shaft.
Similarly, the set-up mode of box of tricks in the hollow middle shaft of rotor has two kinds at least: the first, box of tricks comprises box of tricks housing, box of tricks housing and hollow middle shaft inwall are fixed, the planetary gear shaft of box of tricks is assemblied on box of tricks housing, the axle shaft gear of box of tricks by bearing assemble on box of tricks housing.The second, box of tricks does not establish housing, and the planetary gear shaft dress of box of tricks directly fits on the inwall of the hollow middle shaft of rotor, the axle shaft gear of box of tricks by bearing assemble in the hollow middle shaft of rotor.
As improvement, in order to realize to electric motor temperature reduction, play current lubrication to the gear of motor internal and bearing, the present invention devises a set of cooling and lubricating scheme further, particularly: establish on motor front and rear cover and the fuel feed hole of rotor axis inner space and oil outlet simultaneously.Described fuel feed hole is connected with oil pump by oil pipe with oil outlet.
As improvement, oil pump also can not be adopted to provide cutting oil circulation power, but be directly connected by oil pipe with oil outlet by fuel feed hole, what replace oil pump is establish helicla flute on rotor axis inwall.Utilize middle shaft rotation to promote cooling and lubricating oil flow, provide circulation power to cutting oil.
In order to prevent cutting oil from entering motor cavity, affect the rotation of rotor, the oil sealing for gap between enclosed rotor axis and bearing pedestal can be set in the bearing pedestal that motor front and back ends covers for installing rotor axis.
Beneficial effect: the present invention adopts Double half axle to export and sleeve rotor structural design, integrated box of tricks in rotor hollow cavity.Realize Double half axle function of differential speed output, automotive wheel can being used for as action assembly separately and driving, without the need to configuring differential mechanism and the transmission mechanism between motor and differential separately, greatly reducing the employing space of power assembly.Delivery efficiency is high, and energy loss is low, energy-conserving and environment-protective, is especially applicable to dilly, is more suitable for miniature electric automobile.
Accompanying drawing explanation
Fig. 1 is a kind of structural principle schematic diagram of differential dual-output motor of the present invention.
Fig. 2 is the another kind of structural principle schematic diagram of differential dual-output motor of the present invention.
Fig. 3 is the cooling and lubricating system structural principle schematic diagram of differential dual-output motor of the present invention.
Fig. 4 is a kind of schematic diagram arranging structure of differential dual-output motor rotor of the present invention.
Embodiment
With reference to Fig. 1, this figure is depicted as the simplified basic diagram of a kind of execution mode of differential dual-output motor of the present invention, electric machine casing is by comprising tubular support 1 and two end caps 5,14 being separately positioned on support two ends, stator 8 is fixed on inboard wall of base, establishes hollow middle shaft 6 in the middle of rotor 9, hollow middle shaft 6 two ends of rotor respectively by bearing assemble on two end caps.The hollow middle shaft inside of rotor is provided with box of tricks, box of tricks comprises housing 7, the housing of box of tricks and the hollow middle shaft inwall secure fit of rotor, in box of tricks housing, concentric is oppositely arranged two planetary gears 4, and two axle shaft gears 2 that concentric is oppositely arranged.The planet pin 3 of box of tricks is fixed with the housing of box of tricks, two axle shaft gears 2 of box of tricks assemble respectively by bearing and housing 7, the output that two axle shaft gears of box of tricks connect two output axle shafts, 11, two output axle shafts of motor respectively stretches out from electric machine casing two ends respectively.
Substantially identical with electric machine structure shown in Fig. 1 with reference to differential dual-output motor shown in Fig. 2, this figure, difference is described box of tricks, does not establish housing, and the planet pin of box of tricks directly and the hollow middle shaft inwall of rotor is fixing assembles.Two axle shaft gears of box of tricks assemble respectively by the hollow middle shaft inwall of bearing and rotor.
With reference to Fig. 3, be provided with fuel feed hole 15 and oil outlet 16 bottom motor front and rear cover upper rotor part axis installation bearing pedestal, fuel feed hole is connected with oil pump 17 through oil pipe with oil outlet.The hollow middle shaft inwall of rotor establishes helicla flute 18.Under oil pump effect, cutting oil enters in rotor axis mount pad 10 through oil pipe from fuel feed hole, then from rotor, shaft rear end enters rotor axis, from rotor axis inner chamber flow forward, rotor axis is cooled, cutting oil enters in the rotor axis mount pad of front end from rotor axis front end, finally flows out from oil outlet and gets back to oil pump formation circulation through oil pipe.The helicla flute that rotor axis inwall is arranged plays the effect of propelling movement cutting oil, when arranging this structure, also can omit oil pump.
With reference to Fig. 4, shown in this figure, Scheme Characteristics is, rotor and electric machine casing are not directly assembled together, but is assembled together respectively by duplex bearing with two output axle shafts, supports unsettled being arranged in stator by two output axle shafts.
Claims (10)
1. a differential dual-output motor, comprise electric machine casing, stators and rotators is established in electric machine casing, stator is relative with described housing fixing, rotor is rotary setting in stator, it is characterized in that, rotor axis place is cavity structure, be provided with box of tricks in the cavity at rotor axis place, box of tricks comprises two planetary gears that concentric is oppositely arranged and two axle shaft gears that concentric is oppositely arranged; The planet pin of box of tricks is relative with rotor fixing, two axle shaft gears of box of tricks connect two output axle shafts of motor respectively, the axle center of two output axle shafts is coaxial with rotor axis, and the output of two output axle shafts stretches out from electric machine casing two ends respectively.
2. differential dual-output motor according to claim 1, it is characterized in that, described electric machine casing comprises tubular support and is separately positioned on two end caps at support two ends, stator is fixed on inboard wall of base, hollow middle shaft is established in the middle of rotor, the hollow middle shaft two ends of rotor are respectively by bearing assemble on two end caps, and described box of tricks is arranged in the hollow middle shaft of rotor.
3. differential dual-output motor according to claim 2, it is characterized in that, box of tricks comprises box of tricks housing, box of tricks housing and hollow middle shaft inwall are fixed, the planetary gear shaft of box of tricks is assemblied on box of tricks housing, the axle shaft gear of box of tricks by bearing assemble on box of tricks housing.
4. differential dual-output motor according to claim 2, it is characterized in that, box of tricks does not establish housing, and the planetary gear shaft of box of tricks is directly assemblied on the inwall of the hollow middle shaft of rotor, the axle shaft gear of box of tricks by bearing assemble in the hollow middle shaft of rotor.
5. differential dual-output motor according to claim 2, is characterized in that, two output axle shafts are assembled together respectively by bearing and two end caps.
6. differential dual-output motor according to claim 2, is characterized in that, two output axle shafts are assembled together respectively by the hollow middle shaft of bearing and rotor.
7. differential dual-output motor according to claim 1, is characterized in that, rotor is unsettled to be arranged in stator, and each output axle shaft passes through together with at least two bearing assembles with rotor.
8. a differential dual-output motor, comprise electric machine casing, stators and rotators is established in electric machine casing, stator is relative with described housing fixing, rotor is rotary setting in stator, it is characterized in that, rotor axis place is cavity structure, be provided with box of tricks in the cavity at rotor axis place, box of tricks comprises two planetary gears that concentric is oppositely arranged and two axle shaft gears that concentric is oppositely arranged; The planetary gear shaft of box of tricks is relative with rotor fixing, and two axle shaft gears of box of tricks are respectively used to connect output axle shaft.
9. differential dual-output motor according to claim 8, it is characterized in that, described electric machine casing comprises tubular support and is separately positioned on two end caps at support two ends, stator is fixed on inboard wall of base, hollow middle shaft is established in the middle of rotor, the hollow middle shaft two ends of rotor are respectively by bearing assemble on two end caps, and described box of tricks is arranged in the hollow middle shaft of rotor.
10. differential dual-output motor according to claim 8, is characterized in that, rotor is unsettled to be arranged in stator, and each output axle shaft passes through together with at least two bearing assembles with rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510462682.2A CN105186770A (en) | 2015-08-01 | 2015-08-01 | Differential dual-output motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510462682.2A CN105186770A (en) | 2015-08-01 | 2015-08-01 | Differential dual-output motor |
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| Publication Number | Publication Date |
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| CN105186770A true CN105186770A (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510462682.2A Pending CN105186770A (en) | 2015-08-01 | 2015-08-01 | Differential dual-output motor |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107781378A (en) * | 2016-08-26 | 2018-03-09 | 东风德纳车桥有限公司 | A kind of motor differential assembly |
| CN108183580A (en) * | 2018-02-08 | 2018-06-19 | 西安六环传动新能源科技有限公司 | A kind of permanent magnet synchronous motor of built-in spur-gear differential |
| CN108407586A (en) * | 2018-02-08 | 2018-08-17 | 西安六环传动新能源科技有限公司 | A kind of horizontal coaxial subtractive integrated electric bridge |
| WO2018161645A1 (en) * | 2017-03-08 | 2018-09-13 | 王怀平 | Direct current motor having one-way bearings |
| CN109106239A (en) * | 2018-08-27 | 2019-01-01 | 滦南建国科技有限公司 | Egg mix processing unit (plant) and its processing method |
| CN111520453A (en) * | 2020-03-25 | 2020-08-11 | 湖南农业大学 | Embedded differential mechanism rotor |
| CN112092540A (en) * | 2020-08-24 | 2020-12-18 | 北汽福田汽车股份有限公司 | Electric drive axle assembly and vehicle |
| CN112389178A (en) * | 2019-08-19 | 2021-02-23 | 比亚迪股份有限公司 | Axle assembly and vehicle |
| CN112677760A (en) * | 2019-10-18 | 2021-04-20 | 比亚迪股份有限公司 | Axle assembly and vehicle |
| CN112928859A (en) * | 2021-01-21 | 2021-06-08 | 清研众智测试技术（天津）有限公司 | Differential function rotor and driving motor |
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| CN101521431A (en) * | 2009-03-10 | 2009-09-02 | 江西江铃汽车集团实业有限公司 | Motor with double output shaft sleeves and differential function |
| CN101707412A (en) * | 2009-11-13 | 2010-05-12 | 北京科技大学 | Driving motor with function of differential speed output |
| CN201985686U (en) * | 2011-05-04 | 2011-09-21 | 李领领 | Dual-output motor transmission integrated system |
| CN203567535U (en) * | 2013-12-04 | 2014-04-30 | 张�杰 | Power device for electromobile direct-driven axle |
| CN104052189A (en) * | 2013-11-26 | 2014-09-17 | 马力 | Rotor structure of differential motor for electric vehicle |
| CN204992910U (en) * | 2015-08-01 | 2016-01-20 | 谷伟 | Differential dual output motor |
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2015
- 2015-08-01 CN CN201510462682.2A patent/CN105186770A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521431A (en) * | 2009-03-10 | 2009-09-02 | 江西江铃汽车集团实业有限公司 | Motor with double output shaft sleeves and differential function |
| CN101707412A (en) * | 2009-11-13 | 2010-05-12 | 北京科技大学 | Driving motor with function of differential speed output |
| CN201985686U (en) * | 2011-05-04 | 2011-09-21 | 李领领 | Dual-output motor transmission integrated system |
| CN104052189A (en) * | 2013-11-26 | 2014-09-17 | 马力 | Rotor structure of differential motor for electric vehicle |
| CN203567535U (en) * | 2013-12-04 | 2014-04-30 | 张�杰 | Power device for electromobile direct-driven axle |
| CN204992910U (en) * | 2015-08-01 | 2016-01-20 | 谷伟 | Differential dual output motor |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107781378A (en) * | 2016-08-26 | 2018-03-09 | 东风德纳车桥有限公司 | A kind of motor differential assembly |
| WO2018161645A1 (en) * | 2017-03-08 | 2018-09-13 | 王怀平 | Direct current motor having one-way bearings |
| CN108183580A (en) * | 2018-02-08 | 2018-06-19 | 西安六环传动新能源科技有限公司 | A kind of permanent magnet synchronous motor of built-in spur-gear differential |
| CN108407586A (en) * | 2018-02-08 | 2018-08-17 | 西安六环传动新能源科技有限公司 | A kind of horizontal coaxial subtractive integrated electric bridge |
| CN108407586B (en) * | 2018-02-08 | 2021-07-30 | 西安六环传动新能源科技有限公司 | Transverse coaxial differential-reduction integrated electric bridge |
| CN109106239A (en) * | 2018-08-27 | 2019-01-01 | 滦南建国科技有限公司 | Egg mix processing unit (plant) and its processing method |
| CN112389178A (en) * | 2019-08-19 | 2021-02-23 | 比亚迪股份有限公司 | Axle assembly and vehicle |
| CN112677760A (en) * | 2019-10-18 | 2021-04-20 | 比亚迪股份有限公司 | Axle assembly and vehicle |
| CN111520453A (en) * | 2020-03-25 | 2020-08-11 | 湖南农业大学 | Embedded differential mechanism rotor |
| CN112092540A (en) * | 2020-08-24 | 2020-12-18 | 北汽福田汽车股份有限公司 | Electric drive axle assembly and vehicle |
| CN112928859A (en) * | 2021-01-21 | 2021-06-08 | 清研众智测试技术（天津）有限公司 | Differential function rotor and driving motor |
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Application publication date: 20151223 |
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| WD01 | Invention patent application deemed withdrawn after publication |