CN108321974A - A kind of electric vehicle motor damping maintenance process - Google Patents

A kind of electric vehicle motor damping maintenance process Download PDF

Info

Publication number
CN108321974A
CN108321974A CN201810210278.XA CN201810210278A CN108321974A CN 108321974 A CN108321974 A CN 108321974A CN 201810210278 A CN201810210278 A CN 201810210278A CN 108321974 A CN108321974 A CN 108321974A
Authority
CN
China
Prior art keywords
motor
mounting ring
deflector
electric vehicle
maintenance process
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201810210278.XA
Other languages
Chinese (zh)
Other versions
CN108321974B (en
Inventor
沈玮
陈海涛
李龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Xincheng electric electric electric science and Technology Development Co., Ltd.
Original Assignee
Suzhou Xunchi Electronic Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Xunchi Electronic Technology Co Ltd filed Critical Suzhou Xunchi Electronic Technology Co Ltd
Priority to CN201810210278.XA priority Critical patent/CN108321974B/en
Publication of CN108321974A publication Critical patent/CN108321974A/en
Application granted granted Critical
Publication of CN108321974B publication Critical patent/CN108321974B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/24Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K11/00Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/21Devices for sensing speed or position, or actuated thereby
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/18Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K9/00Arrangements for cooling or ventilating
    • H02K9/02Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K9/00Arrangements for cooling or ventilating
    • H02K9/02Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K2205/00Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
    • H02K2205/09Machines characterised by drain passages or by venting, breathing or pressure compensating means
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K2213/00Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03Machines characterised by numerical values, ranges, mathematical expressions or similar information
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/64Electric machine technologies in electromobility

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Motor Or Generator Frames (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The invention belongs to motor technology field, specifically a kind of electric vehicle motor damping maintenance process is symmetrically installed mounting ring in shell both sides;Bearing periphery ball connects one group of telescopic rod, and telescopic rod other end ball is connected on mounting ring inner ring;Mounting ring side mounting guiding board;Deflector is equipped with one group of arcuate socket;Arcuate socket is tilted from deflector outer ring to deflector side;Mounting ring outer ring is equipped with annular groove, and air bag is equipped in groove, and inside air bag is equipped with one group of damping spring;Mounting ring outer circle is equipped with T stage rank, and step both sides setting offset spring reduces the influence of motor shaft axial dipole field by the laterally disposed offset spring of mounting ring.The damping maintenance process of the present invention can reduce the collision between motor shaft and shell;After motor stalling simultaneously, using inertia so that motor stopping fan continues to radiate to motor;Deflector is set by outside, bottles up dust or water mist enters inside motor, improve the service life of motor.

Description

A kind of electric vehicle motor damping maintenance process
Technical field
The invention belongs to motor technology field, specifically a kind of electric vehicle motor damping maintenance process.
Background technology
Electric bicycle, refer to using accumulator as supplementary energy on the basis of ordinary bicycle, be mounted with motor, control The Personal Transporter of the electromechanical integration of the control members such as device processed, accumulator, handle brake lever and display instrument system.
With the development of the society, electric bicycle is more and more universal, it has also become people's most common one kind of going on a journey is ridden instead of walk work Tool.The motor of electric vehicle in the market is generally used exposed or partial occlusion mode to solve its heat dissipation, heat dissipation effect Difference;After the installation of existing motor, the shaft and shell of motor are hard contact, after prolonged use to the abrasion of motor bearings compared with Greatly;When even encountering sharp impacts, bearing damage or motor bending shaft may be caused;Existing motor radiating, only passes through wind Fan heat dissipation just stops operating after motor stalling, and motor radiating efficiency straight line declines, and influences the service life of motor;Simultaneously with electricity The aging of machine internal washer cannot effectively bottle up water mist or dust is entered by motor shaft in shell, serious to restrict making for motor Use the service life.
Invention content
In order to make up for the deficiencies of the prior art, a kind of electric vehicle motor damping maintenance process proposed by the present invention, can subtract Collision between small machine axis and shell;After motor stalling simultaneously, continues to export internal heat using inertia, improve motor Service life;Deflector is set by outside, bottles up dust or water mist enters inside motor, improve the service life of motor.
The technical solution adopted by the present invention to solve the technical problems is:A kind of electric vehicle motor damping of the present invention Maintenance process, the motor include motor shaft, stator, rotor, shell and bearing, which includes the following steps:
Step 1 is symmetrically installed mounting ring in shell both sides;Bearing periphery ball connects one group of telescopic rod, will rigidly connect It connects and makes varied rigid link into, improve the impact resistance of bearing;The telescopic rod other end ball is connected on mounting ring inner ring;
Step 2, the mounting ring side mounting guiding board in step 1;The deflector is equipped with one group of arcuate socket;It is described Arcuate socket is tilted from deflector outer ring to deflector side, and the seal aging of motor be easy to cause dust or water enters in motor Portion causes the damage of motor;Deflector rotates, and is generated towards the air-flow on the outside of axis by arcuate socket, prevents water mist or dust Into inside motor.
Step 3, the mounting ring outer ring is equipped with annular groove in step 2, and air bag, the gas are equipped in the groove Capsule is internally provided with one group of damping spring, and using Multistage damping mechanism, damping vibration improves the shock resistance of motor.
Step 4, mounting ring outer circle is equipped with T stage rank in step 3, and the step both sides setting offset spring passes through The laterally disposed offset spring of mounting ring reduces the influence of motor shaft axial dipole field.
The damping and maintenance of one to four achievable electric vehicle motor through the above steps, can significantly improve electric vehicle motor Service life.
In step 2, the arcuate socket is set as 140-160 ° with deflector end plane angle;On the outside of described arcuate socket one end Equipped with metal clips, when motor high-speed rotation, i.e., when electric bicycle is more than 20KM/h, shrapnel vibrates whistle, reminds user Pay attention to slowing down.
Further include step 5, on the basis of step 4, is set there are one fan spindle bearing in inner walls;The fan shaft Bearing outer-ring is connected in inner walls;The fan spindle bearing inner ring is equipped with one group of blade, and one of blade side is equipped with and matches Pouring weight utilizes the centrifugal action of clump weight after motor stalling so that fan spindle bearing continues spin for some time, improves motor and stops Radiating efficiency after turning, improves the service life of motor.
In step 5, the clump weight is internally provided with oil pocket;The clump weight is equipped with the micro-hole of connection bearing ball, Due to clump weight so that fan spindle bearing eccentric rotary, the ball friction of clump weight side is larger, is added to the ball by micro-hole Big injection flow reduces and is worn at this, improves the service life of fan spindle bearing.
Further include step 6, on the basis of step 5, the hull outside is equipped with one group of heat sink, outside the heat sink Side is equipped with arc wing plate, is drained by arc wing plate, is radiated to shell using heat sink, improves comprehensive heat dissipation effect.
Beneficial effects of the present invention are as follows:
1. the damping maintenance process of the present invention is made into rigid connection semi-rigid by the way that telescopic rod is arranged on the outside of bearing Connection, improves the impact resistance of bearing.
2. damping maintenance process of the present invention bottles up dust or water mist by the way that the arcuate socket towards outside is arranged in deflector Into inside motor, the service life of motor is improved, and metal clips is equipped on the outside of arcuate socket one end, when electric bicycle is super When fast, shrapnel vibrates whistle, and user is reminded to pay attention to the generation slowed down, avoided traffic accident.
3. clump weight is arranged by fan spindle bearing inner ring, using inertia so that motor stopping in damping maintenance process of the present invention Fan continues to radiate to motor.
Description of the drawings
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 is the structure chart of the present invention;
Fig. 2 is the axonometric drawing of the present invention;
Fig. 3 is bearing of the present invention and mounting ring connection figure;
Fig. 4 is the deflector structure figure of the present invention;
In figure:Motor shaft 1, stator 2, rotor 3, shell 4, fan spindle bearing 41, blade 42, clump weight 43, micro-hole 431, Heat sink 44, arc wing plate 45, bearing 5, telescopic rod 51, mounting ring 6, air bag 61, step 62, deflector 7, arcuate socket 71, gold Belong to shrapnel 72, inflation unit 8, stomata 81, spring 82, gasket 83.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below Specific implementation mode is closed, the present invention is further explained.
As shown in Figures 1 to 4, a kind of electric vehicle motor damping maintenance process of the present invention, the motor include electricity Arbor 1, stator 2, rotor 3, shell 4 and bearing 5, the damping maintenance process include the following steps:
Step 1 is symmetrically installed mounting ring 6 in 4 both sides of shell;5 periphery ball of the bearing connects one group of telescopic rod 51, will Rigid connection makes varied rigid link into, improves the impact resistance of bearing 5;51 other end ball of the telescopic rod is connected on mounting ring 6 On inner ring;
Step 2, the 6 side mounting guiding board 7 of mounting ring in step 1;The deflector 7 is equipped with one group of arcuate socket 71;The arcuate socket 71 is tilted from 7 outer ring of deflector to 7 side of deflector, and the seal aging of motor be easy to cause dust or water Into inside motor, the damage of motor is caused;Deflector 7 rotates, and is generated towards the air-flow on the outside of axis by arcuate socket 71, prevents Sealing mist or dust enter inside motor.
Step 3,6 outer ring of the mounting ring is equipped with annular groove in step 2, and air bag 61, institute are equipped in the groove It states air bag 61 and is internally provided with one group of damping spring, using Multistage damping mechanism, damping vibration improves the shock resistance of motor.
Step 4,6 outer circle of mounting ring is equipped with T stage rank 62 in step 3, and the setting of 62 both sides of the step deviates spring, By 6 laterally disposed offset spring of mounting ring, the influence of 1 axial dipole field of motor shaft is reduced.
The damping and maintenance of one to four achievable electric vehicle motor through the above steps, can significantly improve electric vehicle motor Service life.
In step 2, the arcuate socket 71 is set as 140-160 ° with 7 end plane angle of deflector;71 one end of the arcuate socket Outside is equipped with metal clips 72, and when motor high-speed rotation, i.e., when electric bicycle is more than 20KM/h, shrapnel 72 vibrates whistle, carries Awake user pays attention to slowing down.
Further include step 5, on the basis of step 4, is set there are one fan spindle bearing 41 in 4 inner wall of shell;The wind 41 outer ring of fan bearing is connected in 4 inner wall of shell;41 inner ring of the fan spindle bearing is equipped with one group of blade 42, and one of blade 42 sides are equipped with clump weight 43 and utilize the centrifugal action of clump weight 43 so that fan spindle bearing 41 continues rotation one after motor stalling The section time improves radiating efficiency after motor stalling, improves the service life of motor.
In step 5, the clump weight 43 is internally provided with oil pocket;The clump weight is equipped with the miniature of connection bearing ball Hole 431, due to clump weight 43 so that 41 eccentric rotary of fan spindle bearing, the ball friction of 43 side of clump weight is larger, by miniature Hole 431 increases injection flow to the ball, reduces and is worn at this, improves the service life of fan spindle bearing 41.
Further include step 6, on the basis of step 5,4 outside of the shell is equipped with one group of heat sink 44, the heat dissipation 44 outside of plate is equipped with arc wing plate 45, is drained by arc wing plate 45, is radiated to shell 4 using heat sink 44, improved comprehensive Close heat dissipation effect.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe the originals of the present invention Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle It is fixed.

Claims (5)

1. a kind of electric vehicle motor damping maintenance process, the motor includes motor shaft (1), stator (2), rotor (3), shell (4) and bearing (5), which is characterized in that the damping maintenance process includes the following steps:
Step 1 is symmetrically installed mounting ring (6) in the shell (4) both sides;In the bearing (5) periphery, ball connects one group of telescopic rod (51), telescopic rod (51) other end ball is connected on mounting ring (6) inner ring;
Step 2, mounting ring (6) side mounting guiding board (7) in step 1;One group of arcuate socket is equipped on deflector (7) (71), it bottles up dust or water mist enters inside motor, and the arcuate socket (71) is from deflector (7) outer ring to deflector (7) Side tilts;
Step 3, mounting ring (6) outer ring in step 2 are equipped with annular groove, and air bag (61) is equipped in the groove, described Air bag (61) is internally provided with one group of damping spring;
Step 4, mounting ring (6) outer circle in step 3 are equipped with T stage rank (62), step (62) the both sides setting offset Spring;
The damping and maintenance of one to four achievable electric vehicle motor through the above steps, can significantly improve making for electric vehicle motor Use the service life.
2. a kind of electric vehicle motor damping maintenance process according to claim 1, it is characterised in that:In step 2, institute It states arcuate socket (71) and is set as 140-160 ° with deflector (7) end plane angle;Metal elastic is equipped on the outside of described arcuate socket (71) one end Piece (72), when electric bicycle exceeds the speed limit, metal clips (72) vibrates whistle, and user is reminded to pay attention to slowing down.
3. a kind of electric vehicle motor damping maintenance process according to claim 1, it is characterised in that:Further include step 5, On the basis of step 4, one fan spindle bearing (41) is installed in shell (4) inner wall;Fan spindle bearing (41) outer ring is connected In shell (4) inner wall;Fan spindle bearing (41) inner ring is equipped with one group of blade (42), and one of blade (42) side is set There is clump weight (43), using inertia so that motor stopping fan continues to radiate to motor.
4. a kind of electric vehicle motor damping maintenance process according to claim 3, it is characterised in that:In step 5, institute It states clump weight (43) and is internally provided with oil pocket;The clump weight (43) is equipped with the micro-hole (431) of connection bearing (5) ball.
5. a kind of electric vehicle motor damping maintenance process according to claim 4, it is characterised in that:Further include step 6, On the basis of step 5, one group of heat sink (44) is equipped on the outside of shell (4), heat sink (44) side is equipped with arc shaped wing Plate (45).
CN201810210278.XA 2018-03-14 2018-03-14 A kind of electric vehicle motor damping maintenance process Active CN108321974B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810210278.XA CN108321974B (en) 2018-03-14 2018-03-14 A kind of electric vehicle motor damping maintenance process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810210278.XA CN108321974B (en) 2018-03-14 2018-03-14 A kind of electric vehicle motor damping maintenance process

Publications (2)

Publication Number Publication Date
CN108321974A true CN108321974A (en) 2018-07-24
CN108321974B CN108321974B (en) 2019-08-02

Family

ID=62902508

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810210278.XA Active CN108321974B (en) 2018-03-14 2018-03-14 A kind of electric vehicle motor damping maintenance process

Country Status (1)

Country Link
CN (1) CN108321974B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101860124A (en) * 2010-03-25 2010-10-13 重庆大学 Hub shock absorption motor system
CN101882834A (en) * 2009-12-26 2010-11-10 张建成 Wheel electrical machine with water-cooling magnetic-damping stator winding
CN102545471A (en) * 2012-02-24 2012-07-04 上海金桥中工电动叉车公司 Double-function output motor
CN103825396A (en) * 2014-01-03 2014-05-28 重庆大学 Motor spindle vibration active control apparatus
CN104901468A (en) * 2014-03-05 2015-09-09 泰州市华源电机有限公司 Internally air-cooled variable-frequency motor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101882834A (en) * 2009-12-26 2010-11-10 张建成 Wheel electrical machine with water-cooling magnetic-damping stator winding
CN101860124A (en) * 2010-03-25 2010-10-13 重庆大学 Hub shock absorption motor system
CN102545471A (en) * 2012-02-24 2012-07-04 上海金桥中工电动叉车公司 Double-function output motor
CN103825396A (en) * 2014-01-03 2014-05-28 重庆大学 Motor spindle vibration active control apparatus
CN104901468A (en) * 2014-03-05 2015-09-09 泰州市华源电机有限公司 Internally air-cooled variable-frequency motor

Also Published As

Publication number Publication date
CN108321974B (en) 2019-08-02

Similar Documents

Publication Publication Date Title
CN202029994U (en) Rear-mounted boosting device with propeller
CN201805342U (en) Water cooling system for cylindrical permanent magnet speed regulation device
CN107406134A (en) Swimming and diving servicing unit
CN108462283B (en) A kind of electronic automobile-used shock-absorbing motor
CN108321974B (en) A kind of electric vehicle motor damping maintenance process
CN105857093A (en) Automobile wind collecting and power generating system
CN201601542U (en) Motor rotor with axial-flow fan blade of electric vehicle
CN104638837A (en) Motor
CN110500293B (en) Centrifugal compressor
CN208489764U (en) A kind of cooling structure of high-speed permanent magnetic generator
CN218897135U (en) Novel cooling device for wind driven generator
CN217508441U (en) Superspeed wind motor vibration/noise reduction structure
CN202900581U (en) External heat dissipation type direct connection portable type oilless air compressor
CN204465263U (en) A kind of motor
CN201810480U (en) Centrifugal variable-pitch device for wind machines
CN205559156U (en) Take high -efficient wind energy conversion system of leading radome fairing
CN215486702U (en) Condensation axial flow fan for train air conditioner
CN205945281U (en) Rotor wind screen used for electric motor coach driving motor
CN209313686U (en) A kind of water proof type stepper motor shell
CN208281386U (en) A kind of birotor hydroelectric generator forging
CN208870738U (en) A kind of passive type yaw wind power generation plant
CN207021840U (en) A kind of motor with dual-cooled device
CN207910627U (en) A kind of Novel variable-frequency motor with cooling mechanism
CN118100528B (en) High-speed magnetic suspension motor cooling system
CN207835186U (en) A kind of storage battery automobile motor

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20190712

Address after: Room A4, Exhibition Hall 2, Yiwu Commercial and Trade City, Longqiao District, Suzhou City, Anhui Province

Applicant after: SUZHOU FUTURE NETWORK SCIENCE AND TECHNOLOGY CO., LTD.

Address before: No. 31, Jiangzhuang Nanxiang, Nanguan Office, Suzhou City, Anhui Province

Applicant before: Suzhou Xunchi Electronic Technology Co. Ltd.

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20191210

Address after: 221700 Fengxian County electric vehicle industry park, Jiangsu, Xuzhou

Patentee after: Jiangsu Xincheng electric electric electric science and Technology Development Co., Ltd.

Address before: Room A4, Exhibition Hall 2, Yiwu Commercial and Trade City, Longqiao District, Suzhou City, Anhui Province

Patentee before: SUZHOU FUTURE NETWORK SCIENCE AND TECHNOLOGY CO., LTD.

EE01 Entry into force of recordation of patent licensing contract
EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20180724

Assignee: Fengxian Huicheng Electric Vehicle Technology Co.,Ltd.

Assignor: JIANGSU XINCHENG ELECTRIC VEHICLE TECHNOLOGY DEVELOPMENT Co.,Ltd.

Contract record no.: X2021980016015

Denomination of invention: A damping maintenance method for electric vehicle motor

Granted publication date: 20190802

License type: Exclusive License

Record date: 20211223