CN108321974B - A kind of electric vehicle motor damping maintenance process - Google Patents
A kind of electric vehicle motor damping maintenance process Download PDFInfo
- Publication number
- CN108321974B CN108321974B CN201810210278.XA CN201810210278A CN108321974B CN 108321974 B CN108321974 B CN 108321974B CN 201810210278 A CN201810210278 A CN 201810210278A CN 108321974 B CN108321974 B CN 108321974B
- 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.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/18—Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2205/00—Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
- H02K2205/09—Machines characterised by drain passages or by venting, breathing or pressure compensating means
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
-
- 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
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 two sides；Bearing periphery ball connects one group of telescopic rod, and telescopic rod other end ball connects 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 two sides setting offset spring reduces the influence of motor shaft axial dipole field by the laterally disposed offset spring of mounting ring.Damping maintenance process of the invention can reduce the collision between motor shaft and shell；After motor stalling simultaneously, motor stopping fan is made to continue to radiate to motor using inertia；Deflector is set by outside, bottles up dust or water mist enters inside motor, improve the service life of motor.
Description
Technical field
The invention belongs to motor technology field, specifically a kind of electric vehicle motor damping maintenance process.
Background technique
Electric bicycle refers to using battery as supplementary energy on the basis of ordinary bicycle, is mounted with motor, control
The Personal Transporter of the electromechanical integration of the control members such as device processed, battery, handle brake lever and display instrument system.
With the development of the society, electric bicycle is more more and more universal, it has also become go on a journey most common one kind of people 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 cause；Existing motor radiating, only passes through wind
Fan heat dissipation just stops operating after motor stalling, and the decline of motor radiating efficiency straight line 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 in shell by motor shaft, serious to restrict making for motor
Use the service life.
Summary of the invention
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, the damping maintenance process the following steps are included:
Step 1 is symmetrically installed mounting ring in shell two sides；Bearing periphery ball connects one group of telescopic rod, will rigidly connect
It connects and is changed to varied rigid link, improve the impact resistance of bearing；The telescopic rod other end ball connects 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 to enter in motor
Portion causes the damage of motor；Deflector rotation, and generated by arcuate socket towards the air-flow on the outside of axis, prevent water mist or dust
Into inside motor.
Step 3, the mounting ring outer ring is equipped with annular groove in step 2, is equipped with air bag, the gas in the groove
Intracapsular portion is equipped with one group of damping spring, and using Multistage damping mechanism, damping vibration improves the shock resistance of motor.
Step 4, the mounting ring outer circle in step 3 are equipped with the T stage rank matched with annular groove, the step two
Side setting offset spring；The both ends of offset spring are contacted with the inner wall of annular groove and step respectively；
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 and deflector end plane angle are set as 140-160 °；On the outside of described arcuate socket one end
Equipped with metal clips, when the speed of electric bicycle is more than 20KM/h, metal clips vibrates whistle, and user is reminded to pay attention to subtracting
Speed.
Further include step 5, on the basis of step 4, is equipped with a fan spindle bearing on the inner wall of the housing；The fan shaft
Bearing outer-ring is connected on the inner wall of the housing；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 after motor stalling, using the centrifugal action of clump weight, 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, oil pocket is equipped with inside the clump weight；The clump weight is equipped with the micro-hole of connection bearing ball,
Since clump weight makes fan spindle bearing eccentric rotary, the ball friction of clump weight side is larger, is added by micro-hole to the ball
Big injection flow reduces and wears at this, improves the service life of fan spindle bearing.
It 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 using heat sink to shell, improves comprehensive heat dissipation effect.
Beneficial effects of the present invention are as follows:
1. rigid connection is changed to semi-rigid by damping maintenance process of the invention 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 is equipped with metal clips on the outside of arcuate socket one end, when electric bicycle is super
When fast, elastic slice vibrates whistle, and user is reminded to pay attention to the generation slowed down, avoided traffic accident.
3. damping maintenance process of the present invention is arranged clump weight by fan spindle bearing inner ring, makes motor stopping using inertia
Fan continues to radiate to motor.
Detailed description of the invention
The present invention will be further explained below with reference to the attached drawings.
Fig. 1 is structure chart of the invention；
Fig. 2 is axonometric drawing of the invention；
Fig. 3 is bearing of the present invention and mounting ring connection figure；
Fig. 4 is deflector structure figure of the 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 elastic slice 72, inflation unit 8, stomata 81, spring 82, gasket 83.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Specific embodiment 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 the following steps are included:
Step 1 is symmetrically installed mounting ring 6 in 4 two sides of shell；The 5 periphery ball of bearing connects one group of telescopic rod 51, will
Rigid connection is changed to varied rigid link, improves the impact resistance of bearing 5；51 other end ball of telescopic rod connects in 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 by arcuate socket 71 towards the air-flow on the outside of axis, prevents
Sealing mist or dust enter inside motor.
Step 3,6 outer ring of mounting ring is equipped with annular groove in step 2, is equipped with air bag 61, institute in the groove
It states and is equipped with one group of damping spring inside air bag 61, using Multistage damping mechanism, damping vibration improves the shock resistance of motor.
Step 4,6 outer circle of mounting ring in step 3 are equipped with the T stage rank 62 matched with annular groove, and described
62 two sides of rank setting offset spring；The both ends of offset spring are contacted with the inner wall of annular groove and step 62 respectively；
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；Described 71 one end of arcuate socket
Outside is equipped with metal clips 72, and when the speed of electric bicycle is more than 20KM/h, metal clips 72 vibrates whistle, reminds and uses
Person pays attention to slowing down.
Further include step 5, on the basis of step 4, is equipped with a fan spindle bearing 41 in 4 inner wall of shell；The wind
Fan 41 outer ring of bearing is connected in 4 inner wall of shell；41 inner ring of fan spindle bearing is equipped with one group of blade 42, and one of blade
42 sides are equipped with clump weight 43, after motor stalling, using the centrifugal action of clump weight 43, so that fan spindle bearing 41 continues rotation one
The section time improves radiating efficiency after motor stalling, improves the service life of motor.
In step 5, oil pocket is equipped with inside the clump weight 43；The clump weight is equipped with the miniature of connection bearing ball
Hole 431, since clump weight 43 makes 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 wears at this, improves the service life of fan spindle bearing 41.
Further include step 6, on the basis of step 5, one group of heat sink 44, the heat dissipation are equipped on the outside of the shell 4
It is equipped with arc wing plate 45 on the outside of plate 44, is drained by arc wing plate 45, is radiated using heat sink 44 to shell 4, improves 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 originals of the 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 the following steps are included:
Step 1 is symmetrically installed mounting ring (6) in the shell (4) two sides；In the bearing (5) periphery, ball connects one group of telescopic rod
(51), telescopic rod (51) other end ball connects 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 inclination；
Step 3, mounting ring (6) outer ring in step 2 is equipped with annular groove, is equipped with air bag (61) in the groove, described
One group of damping spring is equipped with inside air bag (61)；
Step 4, mounting ring (6) outer circle in step 3 are equipped with the T stage rank (62) matched with annular groove, and described
Rank (62) two sides setting offset spring；The both ends of offset spring are contacted with the inner wall of annular groove and step (62) respectively；
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 deflector (7) end plane angle is set as 140-160 °；Metal elastic is equipped on the outside of described arcuate socket (71) one end
Piece (72), when the speed of electric bicycle is more than 20KM/h, metal clips (72) vibrates whistle, and user is reminded to pay attention to subtracting
Speed.
3. a kind of electric vehicle motor damping maintenance process according to claim 1, it is characterised in that: it 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 are clump weight (43), makes motor stopping fan continue to radiate to motor using inertia.
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 and is equipped with oil pocket inside clump weight (43)；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: it 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).
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 CN108321974A (en) | 2018-07-24 |
| CN108321974B true 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)
| 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 |
-
2018
- 2018-03-14 CN CN201810210278.XA patent/CN108321974B/en active Active
Patent Citations (5)
| 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 |
|---|---|
| CN108321974A (en) | 2018-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206379815U (en) | A kind of permanent-magnet brushless DC electric machine of good heat dissipation effect | |
| CN107406134A (en) | Swimming and diving servicing unit | |
| CN105857093B (en) | Automobile wind collecting and power generating system | |
| CN106995033B (en) | Driving mechanism of electric vehicle | |
| CN109038921A (en) | A kind of high-efficient heat-dissipating magneto of built-in jet | |
| CN108321974B (en) | A kind of electric vehicle motor damping maintenance process | |
| CN108462283B (en) | A kind of electronic automobile-used shock-absorbing motor | |
| CN201601542U (en) | Motor rotor with axial-flow fan blade of electric vehicle | |
| CN104638837A (en) | Motor | |
| CN208489764U (en) | A kind of cooling structure of high-speed permanent magnetic generator | |
| CN201122878Y (en) | Novel ventilation flue low-voltage three phase asynchronous motor | |
| CN205901501U (en) | Motor with thermal -insulated spoiler | |
| CN204465263U (en) | A kind of motor | |
| CN208571747U (en) | A kind of automobile-used closed generator housing of engineering and rotor | |
| CN207518397U (en) | A kind of novel aluminum alloy outer shell of motor | |
| CN215486702U (en) | Condensation axial flow fan for train air conditioner | |
| CN209313686U (en) | A kind of water proof type stepper motor shell | |
| CN205945281U (en) | Rotor wind screen used for electric motor coach driving motor | |
| CN207910627U (en) | A kind of Novel variable-frequency motor with cooling mechanism | |
| CN206785739U (en) | Folk art term explosion-proof axial flow fan | |
| CN207609578U (en) | A kind of high safety factor centrifugal fan of vibrationproof | |
| CN104989656B (en) | Without sealing circulating pump | |
| CN209545365U (en) | A kind of air-cooled pressure roller motor of weaving | |
| CN220067080U (en) | High-efficient radiating motor | |
| CN207098864U (en) | A kind of motor with cylindrical annular centrifugation blade structure |
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 |