CN110329049A - Intelligent time-sharing double-driving force assembly - Google Patents
Intelligent time-sharing double-driving force assembly Download PDFInfo
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- CN110329049A CN110329049A CN201910776681.3A CN201910776681A CN110329049A CN 110329049 A CN110329049 A CN 110329049A CN 201910776681 A CN201910776681 A CN 201910776681A CN 110329049 A CN110329049 A CN 110329049A
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- main motor
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- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000005119 centrifugation Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 2
- 210000003484 anatomy Anatomy 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/02—Arrangement or mounting of electrical propulsion units comprising more than one electric motor
-
- 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
- B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
A kind of Intelligent time-sharing double-driving force assembly disclosed by the invention, is related to electric vehicle engineering field.The power assembly includes duplex motor, the duplex motor includes the clutch being arranged between main motor, auxiliary-motor and main motor and auxiliary-motor, the output shaft front end of the main motor and the transmission shaft of electric car are connected, and the clutch both ends couple with main motor output shaft tail end and auxiliary-motor output shaft front end respectively.A kind of Intelligent time-sharing double-driving force assembly disclosed by the invention, the size of the driving power according to needed for electric car under different road conditions and torque can be achieved, intelligence switches single, double electrical machine working mode, reasonable distribution power, reduce the driving power consumption of electric car, improve course continuation mileage, in the case that if electric car needs lower-wattage and small torque drive, single motor work can be used, if can intelligently switch to bi-motor operating mode in the case that electric car needs higher-wattage and large torque to drive.
Description
Technical field
The present invention relates to electric vehicle engineering fields, and in particular to a kind of Intelligent time-sharing double-driving force assembly.
Background technique
Motor in electric automobile is using vehicle power supply as power, and Motor for Electric Automobile drives wheels travel, due to environment shadow
The opposite orthodox car of sound is smaller, and its prospects are considered optimistic wildly.
Electric car is divided into two drives and two kinds of forms of 4 wheel driven at present, and the power of existing two drive electric automobile mostly uses greatly list
Platform driving motor is all a driving motor job, power consumption unreasonable distribution, as automobile needs on level road regardless of road conditions
Power only needs lower-wattage and small torque, if big motor drives, energy dissipation is larger, course continuation mileage reduces.
Therefore, in view of problem above, it is necessary to propose a kind of Intelligent time-sharing double-driving force assembly, it can be according to road conditions
Motor working method is adjusted, thus realize the reasonable distribution of power consumption, it is energy saving.
Summary of the invention
In view of this, the power assembly includes duplex motor the invention proposes a kind of Intelligent time-sharing double-driving force assembly,
Duplex motor includes main motor and auxiliary-motor, and the two is connected by clutch, it can be achieved that intelligently switching is single, double according to different road conditions
Electrical machine working mode, reasonable distribution power improve course continuation mileage.
A kind of Intelligent time-sharing double-driving force assembly that purpose according to the present invention proposes, including duplex motor, the duplex
Motor includes the clutch being arranged between main motor, auxiliary-motor and main motor and auxiliary-motor, before the output shaft of the main motor
End and the transmission shaft of electric car are connected, the clutch both ends respectively with main motor output shaft tail end and auxiliary-motor output shaft
Front end connection.
When single motor drives, main motor and auxiliary-motor pass through clutch separation, main motor work, auxiliary-motor stopping；Double electricity
When machine drives, main motor and auxiliary-motor by Clutch Coupling, main motor as active motor, auxiliary-motor as slave motor,
Torque is transferred to clutch by the output shaft front end of auxiliary-motor, and torque is transferred to main motor again by clutch, realize main motor and
Transmission shaft of the common output torque of auxiliary-motor to electric car, driving electric car advance.
Preferably, the main motor includes main motor stator, main motor rotor, main motor armature spindle and main motor rotation
Transformer；The auxiliary-motor includes auxiliary-motor stator, auxiliary-motor rotor, auxiliary-motor armature spindle and auxiliary-motor rotary transformer；
It is coaxially disposed before and after the main motor armature spindle and auxiliary-motor armature spindle, the biography of main motor armature spindle front end and electric car
Moving axis is connected, the main motor and auxiliary-motor along armature spindle setting axially back and forth, and main motor it is opposite with auxiliary-motor one
Splined shaft is extended on end, the clutch both ends couple with main motor splined shaft and auxiliary-motor splined shaft respectively.
Preferably, the power assembly further includes controlling the double duplex electric machine controllers for driving operation of timesharing and to switch
Single-motor double drives mode and the switching of the double drive modes of bi-motor switchs.
Preferably, the main motor and auxiliary-motor are the same type DC permanent magnet synchronous motor of same rotational speed, different capacity.
Preferably, the clutch is that drum brake is centrifuged bidirectional automatic clutch.
Preferably, the power assembly further includes the connection cover for coupling main motor and auxiliary-motor fuselage, the connection
Tubulose is covered into, is covered on the clutch coupled between bi-motor, connection cover both ends are removable with main motor and auxiliary-motor respectively
It unloads and is fixedly connected.
Preferably, the connection cover internal diameter is greater than clutch outer diameter, and outer diameter is less than or equal to the outer diameter of motor；The connection cover
The connection type that is detachably fixed with main motor and auxiliary-motor is to be bolted.
Preferably, uniformly distributed multiple grooves in the connection cover outer round surface circumferential direction, the groove is axially extending along connection cover,
One end is penetrating, and the other end is closed by a platform, and the through-hole for passing through bolt is formed on the platform, adjacent grooves end
It platform and penetrating is interspersed.
Preferably, lightening hole is provided between adjacent grooves, the lightening hole is covered along the extending direction of groove through connection.
Preferably, it is described connection cover inner ring two sides be separately formed with main motor and auxiliary-motor match setting boss or
Concave station.
Compared with prior art, a kind of the advantages of Intelligent time-sharing double-driving force assembly disclosed by the invention, is:
(1) power assembly disclosed by the invention includes the duplex motor being made of main motor and auxiliary-motor, main motor and auxiliary-motor
By clutch connection, it can be achieved that the size of the driving power according to needed for electric car under different road conditions and torque, intelligence switch
Single, double electrical machine working mode, reasonable distribution power reduce the driving power consumption of electric car, improve course continuation mileage.If electronic vapour
In the case that vehicle needs lower-wattage and small torque drive, single motor work can be used, if electric car is needed compared with Gao Gong
In the case that rate and large torque drive, bi-motor operating mode can be intelligently switched to.
(2) present invention couples being connected and fixed between cover progress bi-motor by being arranged between main motor and auxiliary-motor,
Not only it ensure that connection cover inner space maximizes, but also very good solution articulation issues between two or multiple electric motors fuselage,
The stability for improving motor connection, to improve the stability of vehicle.
Detailed description of the invention
It, below will be to embodiment or existing for the clearer technical solution for illustrating the embodiment of the present invention or the prior art
Attached drawing needed in technical description does simple introduction, it is clear that, the accompanying drawings in the following description is only this hair
Bright some embodiments, it will be clear to the skilled person that without creative efforts, may be used also
Other accompanying drawings can also be obtained according to these attached drawings.
Fig. 1 is the structure chart of duplex motor.
Fig. 2 is the sectional view of duplex motor.
Fig. 3 is the exploded view of duplex motor.
Fig. 4 is the explosive view of duplex motor.
Fig. 5 is connection cover perspective view.
Fig. 6 is a kind of control system architecture figure of Intelligent time-sharing double-driving force assembly disclosed by the invention.
Parts title representated by number or letter in figure are as follows:
1- main motor；11- main motor stator；111- main motor stator shell；12- main motor rotor；121- main motor rotor endcap；
13- main motor armature spindle；14- main motor rotary transformer；The rotation of 141- main motor becomes end cap；15- main motor drive end bearing bracket；16- master
Back end cover for motor；2- auxiliary-motor；21- auxiliary-motor stator；211- auxiliary-motor stator case；22- auxiliary-motor rotor；221- auxiliary-motor turns
Sub- end cap；23- auxiliary-motor armature spindle；24- auxiliary-motor rotary transformer；The rotation of 241- auxiliary-motor becomes end cap；25- auxiliary-motor front end
Lid；26- auxiliary-motor rear end cap；3- clutch；4- connection cover；41- groove；42- through-hole；43- lightening hole；44- concave station；5- duplex
Electric machine controller；6- switching switch；7- electron accelerator；8- power battery；9- vehicle VCU.
Specific embodiment
A specific embodiment of the invention is described briefly with reference to the accompanying drawing.Obviously, described embodiment is only
It is a part of the embodiments of the present invention, rather than whole embodiments, based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, belongs to the scope of protection of the invention.
Fig. 1-Fig. 6 shows preferred embodiments of the present invention, has carried out detailed anatomy to it from different angles respectively.
A kind of Intelligent time-sharing double-driving force assembly as shown in Figure 1, 2, including duplex motor, the duplex motor include main electricity
The clutch 3 being arranged between machine 1, auxiliary-motor 2 and main motor 1 and auxiliary-motor 2, the power assembly both can be preposition in electronic vapour
Vehicle realizes forerunner, can also be placed on electric car, realizes rear-guard, the output shaft front end of main motor 1 and the transmission shaft of electric car
It is connected, 3 both ends of clutch export shaft tail end with main motor 1 respectively and 2 output shaft front end of auxiliary-motor couples.
When single motor drives, main motor 1 is separated with auxiliary-motor 2 by clutch 3, and main motor 1 works, and auxiliary-motor 2 stops.
When Dual-motors Driving, main motor 1 is coupled with auxiliary-motor 2 by clutch 3, and main motor 1 is used as active motor, 2 conduct of auxiliary-motor
Torque is transferred to clutch 3 by the output shaft front end of slave motor, auxiliary-motor 2, and torque is transferred to main motor 1 again by clutch 3,
Main motor 1 and the common output torque of auxiliary-motor 2 are realized to the transmission shaft of electric car, driving electric car advances.Specifically, main
Motor 1 and auxiliary-motor 2 are the same type DC permanent magnet synchronous motor of same rotational speed, different capacity, and clutch 3 is that drum brake centrifugation is double
To automatic clutch.
Further, as shown in figure 4, main motor 1 is fixed including main motor drive end bearing bracket 15, main motor rear end cap 16, main motor
Son 11, main motor rotor 12, main motor armature spindle 13 and main motor rotary transformer 14；Main motor stator 11 includes main motor
Stator case 111, main motor rotor 12 include main motor rotor endcap 121, and main motor rotary transformer 14 includes that main motor rotation becomes
End cap 141.Auxiliary-motor 2 includes auxiliary-motor drive end bearing bracket 25, auxiliary-motor rear end cap 26, auxiliary-motor stator 21, auxiliary-motor rotor 22, pair
Rotor axis of electric 23 and auxiliary-motor rotary transformer 24；Auxiliary-motor stator 21 includes auxiliary-motor stator case 211, auxiliary-motor rotor
22 include auxiliary-motor rotor endcap 221, and auxiliary-motor rotary transformer 24 includes that auxiliary-motor rotation becomes end cap 241.
It is coaxially disposed before and after main motor armature spindle 13 and auxiliary-motor armature spindle 23,13 front end of main motor armature spindle and electronic vapour
The transmission shaft of vehicle is connected, the setting axially back and forth of main motor 1 and auxiliary-motor 2 along armature spindle, and main motor 1 and 2 phase of auxiliary-motor
Pair one end on be extended with splined shaft, 3 both ends of clutch couple with 1 splined shaft of main motor and 2 splined shaft of auxiliary-motor respectively.It is main
When powering on, main motor 1 is coupled by splined shaft with clutch 3 motor 1, and main motor 1 starts rotational automatic centrifugation coupling
The splined shaft of auxiliary-motor 2 forms the double-driving force output mode of all-in-one machine (two-shipper is coaxial), realizes the double of high level of synchronization revolving speed
Motor works asynchronously state, which realizes two driving motor synchronism output equal-wattages, same rotational speed, identical
The double-driving force of torque.
Further, as shown in fig. 6, the power assembly further include switching switch 6, it is vehicle VCU9, electron accelerator 7, double
Join electric machine controller 5 and the power battery 8 for the power supply of entire power assembly.Wherein switching switch 6 according to road conditions to switch
Single-motor double drives mode or the double drive modes of bi-motor, vehicle VCU9 are electrically connected with switching switch 6, receives the instruction of switching switch 6,
Control signal is issued to the duplex electric machine controller 5 being connected electrically, duplex motor is controlled by duplex electric machine controller 5 and is divided
When double drive operation.
Further, as shown in Fig. 3,5, power assembly further includes the connection for coupling 2 fuselage of main motor 1 and auxiliary-motor
Cover 4, connection cover cover on the clutch 3 coupled between bi-motor 4 at tubulose, 4 both ends of connection cover respectively with main motor 1 and pair
Motor 2 is detachably fixed connection, specifically, this be detachably fixed connection type be bolted, connection cover 4 ends form with
The through-hole that corresponding motor upper screwed hole position, quantity match.
Further, 4 internal diameters of connection cover are greater than 3 outer diameter of clutch, and outer diameter is less than or equal to the outer diameter of motor.
Further, uniformly distributed multiple grooves 41 in 4 outer round surface circumferential directions of connection cover, and the position of groove 41 and adjacent grooves
The size of spacing matches setting with the arrangement of bolt according to the motor upper screwed hole coupled between 41.The groove 41 is covered along connection
4 is axially extending, and one end is penetrating, and the other end is closed by a platform, and the through-hole 42 for passing through bolt is formed on platform, adjacent recessed
It the platform of 41 end of slot and penetrating is interspersed.The setting of groove 41 is hidden in groove 41 convenient for the bolt of connection, is avoided
Expose fuselage, play certain protective action, and groove 41 is provided with penetrating end, convenient for putting for motor itself connection bolt
It sets.
Further, lightening hole 43 is provided between adjacent grooves 41, lightening hole 43 runs through along the extending direction of groove 41
Connection cover.The setting of lightening hole 43 reduces connection 4 weight of cover and saves production cost.
Further, 4 inner ring two sides of connection cover are separately formed the boss for the setting that matches with main motor 1 and auxiliary-motor 2
Or concave station 44.The setting of boss or concave station 44 improves the compactedness coupled between connection cover 4 and motor, further increases electricity
The stability of machine connection.
In conclusion a kind of Intelligent time-sharing double-driving force assembly disclosed by the invention can be realized according to electronic under different road conditions
The size of driving power and torque needed for automobile, intelligence switch single, double electrical machine working mode, and reasonable distribution power reduces electronic
The driving power consumption of automobile improves course continuation mileage.
The foregoing description of the disclosed embodiments makes professional and technical personnel in the field can be realized and use the present invention.
Various modifications to these embodiments mode will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit and scope of the present invention.Therefore, originally
Invention is not intended to be limited to the embodiments shown herein, and is to fit to the principles and novel features disclosed herein phase
Consistent widest scope.
Claims (10)
1. a kind of Intelligent time-sharing double-driving force assembly, which is characterized in that including duplex motor, the duplex motor includes main electricity
The clutch being arranged between machine, auxiliary-motor and main motor and auxiliary-motor, the output shaft front end of the main motor and electric car
Transmission shaft be connected, the clutch both ends couple with main motor output shaft tail end and auxiliary-motor output shaft front end respectively；
When single motor drives, main motor and auxiliary-motor pass through clutch separation, main motor work, auxiliary-motor stopping；Bi-motor drives
When dynamic, main motor and auxiliary-motor are by Clutch Coupling, and main motor is as active motor, and auxiliary-motor is as slave motor, secondary electricity
Torque is transferred to clutch by the output shaft front end of machine, and torque is transferred to main motor again by clutch, realizes main motor and pair electricity
Transmission shaft of the common output torque of machine to electric car, driving electric car advance.
2. Intelligent time-sharing double-driving force assembly according to claim 1, which is characterized in that the main motor includes main motor
Stator, main motor rotor, main motor armature spindle and main motor rotary transformer；The auxiliary-motor includes auxiliary-motor stator, pair
Rotor, auxiliary-motor armature spindle and auxiliary-motor rotary transformer；Before and after the main motor armature spindle and auxiliary-motor armature spindle
The transmission shaft of coaxial arrangement, main motor armature spindle front end and electric car is connected, and the main motor and auxiliary-motor edge turn
The setting axially back and forth of sub- axis, and splined shaft, the clutch both ends are extended on main motor one end opposite with auxiliary-motor
Couple respectively with main motor splined shaft and auxiliary-motor splined shaft.
3. Intelligent time-sharing double-driving force assembly according to claim 1, which is characterized in that the power assembly further includes control
The double duplex electric machine controller for driving operation of timesharing processed and cutting for mode and bi-motor pair drive mode is driven to switch single-motor double
Change switch.
4. Intelligent time-sharing double-driving force assembly according to claim 1, which is characterized in that the main motor is with auxiliary-motor
The same type DC permanent magnet synchronous motor of same rotational speed, different capacity.
5. Intelligent time-sharing double-driving force assembly according to claim 1, which is characterized in that the clutch is drum brake centrifugation
Bidirectional automatic clutch.
6. Intelligent time-sharing double-driving force assembly according to claim 1, which is characterized in that the power assembly further includes using
In the connection cover of connection main motor and auxiliary-motor fuselage, the connection cover covers at the clutch coupled between bi-motor at tubulose
On, connection cover both ends are detachably fixed with main motor and auxiliary-motor respectively to be connect.
7. Intelligent time-sharing double-driving force assembly according to claim 6, which is characterized in that the connection cover internal diameter be greater than from
Clutch outer diameter, outer diameter are less than or equal to the outer diameter of motor；The connection cover is detachably fixed connection side with main motor and auxiliary-motor
Formula is to be bolted.
8. Intelligent time-sharing double-driving force assembly according to claim 7, which is characterized in that the connection cover outer round surface week
Uniformly distributed multiple grooves upwards, the groove is axially extending along connection cover, and one end is penetrating, and the other end is closed by a platform, described flat
It forms the through-hole for passing through bolt on platform, the platform of adjacent grooves end and penetrating is interspersed.
9. Intelligent time-sharing double-driving force assembly according to claim 8, which is characterized in that be provided with and subtract between adjacent grooves
Repeated hole, the lightening hole are covered along the extending direction of groove through connection.
10. Intelligent time-sharing double-driving force assembly according to claim 6, which is characterized in that connection cover inner ring two sides
It is separately formed the boss or concave station of the setting that matches with main motor and auxiliary-motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910776681.3A CN110329049A (en) | 2019-08-22 | 2019-08-22 | Intelligent time-sharing double-driving force assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910776681.3A CN110329049A (en) | 2019-08-22 | 2019-08-22 | Intelligent time-sharing double-driving force assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110329049A true CN110329049A (en) | 2019-10-15 |
Family
ID=68150073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910776681.3A Pending CN110329049A (en) | 2019-08-22 | 2019-08-22 | Intelligent time-sharing double-driving force assembly |
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| Country | Link |
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| CN (1) | CN110329049A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112491196A (en) * | 2020-11-20 | 2021-03-12 | 无锡南洋职业技术学院 | New energy automobile variable power motor |
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| CN201800514U (en) * | 2010-09-01 | 2011-04-20 | 安徽欧霖机电有限公司 | Dual-motor driving assembly for electric vehicle |
| CN105346410A (en) * | 2015-10-27 | 2016-02-24 | 重庆大学 | Dual-motor power driving assembly |
| CN108045213A (en) * | 2017-11-14 | 2018-05-18 | 河南科技大学 | Electric vehicle and its motor rotating speed and torque coupling power set |
| CN207955316U (en) * | 2017-12-29 | 2018-10-12 | 重庆瑞阳鑫驰新能源汽车有限责任公司 | A kind of electric vehicle and its double-motor device |
| CN109278549A (en) * | 2018-11-23 | 2019-01-29 | 宁波华表机械制造有限公司 | A kind of pure electric Time Division Synchronous four-driving-force assembly |
| CN210309885U (en) * | 2019-08-22 | 2020-04-14 | 宁波华表机械制造有限公司 | Intelligent time-sharing dual-drive assembly |
-
2019
- 2019-08-22 CN CN201910776681.3A patent/CN110329049A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201800514U (en) * | 2010-09-01 | 2011-04-20 | 安徽欧霖机电有限公司 | Dual-motor driving assembly for electric vehicle |
| CN105346410A (en) * | 2015-10-27 | 2016-02-24 | 重庆大学 | Dual-motor power driving assembly |
| CN108045213A (en) * | 2017-11-14 | 2018-05-18 | 河南科技大学 | Electric vehicle and its motor rotating speed and torque coupling power set |
| CN207955316U (en) * | 2017-12-29 | 2018-10-12 | 重庆瑞阳鑫驰新能源汽车有限责任公司 | A kind of electric vehicle and its double-motor device |
| CN109278549A (en) * | 2018-11-23 | 2019-01-29 | 宁波华表机械制造有限公司 | A kind of pure electric Time Division Synchronous four-driving-force assembly |
| CN210309885U (en) * | 2019-08-22 | 2020-04-14 | 宁波华表机械制造有限公司 | Intelligent time-sharing dual-drive assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112491196A (en) * | 2020-11-20 | 2021-03-12 | 无锡南洋职业技术学院 | New energy automobile variable power motor |
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