WO2012020349A2 - Agencement d'étanchéité pour moteur ou générateur électrique - Google Patents

Agencement d'étanchéité pour moteur ou générateur électrique Download PDF

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Publication number
WO2012020349A2
WO2012020349A2 PCT/IB2011/053391 IB2011053391W WO2012020349A2 WO 2012020349 A2 WO2012020349 A2 WO 2012020349A2 IB 2011053391 W IB2011053391 W IB 2011053391W WO 2012020349 A2 WO2012020349 A2 WO 2012020349A2
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
bearing
stator
electric motor
radial wall
Prior art date
Application number
PCT/IB2011/053391
Other languages
English (en)
Other versions
WO2012020349A3 (fr
Inventor
Esad Jaganjac
Original Assignee
Protean Electric Limited
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 Protean Electric Limited filed Critical Protean Electric Limited
Publication of WO2012020349A2 publication Critical patent/WO2012020349A2/fr
Publication of WO2012020349A3 publication Critical patent/WO2012020349A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/083—Structural association with bearings radially supporting the rotary shaft at both ends of the rotor
    • 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
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/124—Sealing of shafts
    • 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
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1737—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings
    • H02K7/086—Structural association with bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly
    • H02K7/088—Structural association with bearings radially supporting the rotor around a fixed spindle; radially supporting the rotor directly radially supporting the rotor directly
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/10—Electrical machine types
    • B60L2220/14—Synchronous machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/10—Electrical machine types
    • B60L2220/16—DC brushless machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/40—Electrical machine applications
    • B60L2220/44—Wheel Hub motors, i.e. integrated in the wheel hub
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2220/00—Electrical machine types; Structures or applications thereof
    • B60L2220/50—Structural details of electrical machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2270/00—Problem solutions or means not otherwise provided for
    • B60L2270/10—Emission reduction
    • B60L2270/14—Emission reduction of noise
    • B60L2270/145—Structure borne vibrations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
    • 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

Definitions

  • the present invention relates to a sealing arrangement for an electric motor or generator.
  • Electric motors work on the principle that a current carrying wire will experience a force in the presence of a magnetic field.
  • a rotor carrying a set of permanent magnets, is arranged to rotate about a stator on which a set of coils arranged to carry an electric current are mounted, resulting in the rotor rotating about the stator and generating movement.
  • seal it is desirable for some form of seal to be placed between the rotor and stator, where typically a seal is place between a stator wall and a circumferential wall of a rotor.
  • the seal typically needs to be of a similar diameter to that of the rotor, which may be quite large.
  • the present invention provides the advantage of stabilising rotor dynamics by using a bearing to support the rotor housing on an opposite radial wall to the rotor radial wall used to mount the rotor to the stator.
  • the invention provides support on two faces of a rotor.
  • the present invention allows a seal to be used between a stator and rotor which has a smaller radius than the outer radius of the rotor, thereby reducing the seal wear rate.
  • Figure 1 illustrates an axial cross section of a motor assembly according to an embodiment of the present invention
  • Figure 2 illustrates an isometric view of the motor assembly illustrated in Figure 1.
  • the embodiment of the invention described is an electric motor for use in a wheel of a vehicle.
  • the motor is of the type having a set of coils being part of the stator for attachment to a vehicle, radially surrounded by a rotor carrying a set of magnets for attachment to a wheel.
  • the various aspects of the invention are equally applicable to an electric generator having the same arrangement.
  • some of the aspects of the invention are applicable to an arrangement having the rotor centrally mounted within radially surrounding coils.
  • the motor assembly 40 comprises a stator, a rotor and a bearing block.
  • the stator includes a heat sink 100, multiple coils 110 formed on stator tooth laminations 120 and electronics (not shown) to drive the coils.
  • the rotor comprises a front portion 220 and a rear portion 230.
  • the front portion 220 includes a front radial wall and a cylindrical portion 221.
  • the rear portion 230 comprises a rear radial wall that forms an annular disc.
  • the rear portion 230 is coupled to the front portion 220. When coupled together, the rotor front portion 220 and rear portion 230 substantially surround the stator.
  • the rear portion 230 can be coupled to the front portion 220 by any suitable means, for example the rear portion 230 can be bolted to the front portion 220.
  • the rotor includes a plurality of magnets 242 arranged around the inside of the cylindrical portion 221.
  • the plurality of magnets 242 are preferably mounted on a rotor back iron 243.
  • the magnets 242 are thus in close proximity to the coils 110 mounted on the stator tooth laminations 120 so that magnetic fields generated by the coils 110 generate a force on the magnets 242 arranged around the inside of the cylindrical portion 221 of the rotor thereby causing a torque to be applied to the rotor.
  • the rotor is attached to the stator using the bearing block.
  • the bearing block can be a standard bearing block as would be used in a vehicle to which the motor assembly 40 is to be fitted.
  • the bearing block comprises two parts, a first coupling element 300 that is arranged to be coupled to the rotor and a second coupling element 310 that is arranged to be coupled to the stator.
  • the second coupling element 310 is fixed to a central portion of the heat sink 100, for example by bolting the second coupling element 310 to the heat sink.
  • the first coupling element 300 is fixed to a central portion on the front radial wall of the rotor front portion 220.
  • first coupling element 300 and second coupling element 310 Mounted between the bearing block' s first coupling element 300 and second coupling element 310 are two angular contact ball bearings 320, 330. As shown in Figure 1 and 2, the two angular contact ball bearings 320, 330 are arranged as matching front to front angular contact ball bearings.
  • Angular contact ball bearings can sustain significant axial loads in one direction together with radial loads. As a result of their design, when a radial load is applied an axial force component is produced. Accordingly, in circumstances when radial loads and axial loads in both directions are likely to be sustained, for example when used on a vehicle as a hub motor, it is desirable to use two angular contact ball bearings, for example matched angular contact ball bearings.
  • the first coupling element 300 and the second coupling element 310 act as the inner and outer rings, respectively, of the two angular contact ball bearings 320, 330.
  • the balls (not shown) of the angular contact ball bearings are mounted within cages (not shown) placed between the ball bearings inner and outer rings .
  • the bearing block is described using matched angular contact ball bearings, other types of ball bearings can be used.
  • the rotor can thus be rotationally fixed to a vehicle with which it is to be used via the bearing block at the central portion on the front radial wall of the front portion 220 of the rotor.
  • This has a significant advantage in that a wheel rim and tyre can then be fixed to the rotor at the central portion using the normal wheel bolts to fix the wheel rim to the central portion of the rotor and consequently firmly onto the rotatable side of the bearing block.
  • the wheel bolts may be fitted through the central portion of the rotor through into the bearing block itself.
  • the motor assembly 40 may be retrofitted to an existing vehicle by removing the wheel, bearing block and any other components such as the braking arrangement.
  • the existing bearing block can then be fitted inside the assembly and the whole arrangement fitted to the vehicle on the stator side and the normal rim and wheel fitted to the rotor so that the rim and wheel surrounds the whole motor assembly. Accordingly, retrofitting to existing vehicles becomes very simple.
  • a further advantage is that there are no forces for supporting the vehicle on the outside of the rotor, particularly on the circumferential wall 221 carrying the magnets on the inside circumference. This is because the forces for carrying the vehicle are transmitted directly from the suspension fixed to one side of the bearing block (via the central portion of the stator) to the central portion of the wheel surrounding the rotor fixed to the other side of the bearing block (via the central portion of the rotor wall) .
  • the rotor also includes a focusing ring and magnets 227 for position sensing. As illustrated in Figures 1 and 2, when mounted to the rotor front portion 220, the rear portion 230 of the rotor extends in a radial direction towards the axis to form an annular disc .
  • the stator' s heat sink 100 includes an annular ring 130 that extends in an axial direction from a radial portion of the heat sink 100.
  • the heat sink's annular ring 130 extends to substantially the same axial position as the rear portion 230 of the rotor so that an inner radial surface 250 of the rear portion 230 of the rotor substantially overlaps the heat sink's annular ring 130.
  • the radius of the heat sink's annular ring 130 is chosen so that a radial gap exists between the inner surface 250 of the rear portion 230 of the rotor and an outer surface 140 of the heat sink's annular ring 130.
  • the third bearing 160 is a deep groove ball bearing having an inner and outer ring 161, 162.
  • the ball bearing is either a non-contact or contact sealed type ball bearing.
  • other types of bearing could be used, for example an conventional radial bearing with an added seal on a side of the bear that faces outwardly from the rear portion 230.
  • the diameter of the inner surface of the third bearings inner ring 161 will typically be slightly smaller than the diameter of the outer surface 140 of the heat sink's annular ring 130 so that the third bearing 160 can be mounted onto the heat sink's annular ring 130.
  • the inner surface 140 of the third bearing 160 is mounted to the annular ring 130 using a press fit.
  • the third bearing 160 is on the same axis as the two bearings 320, 330 incorporated within the bearing block, to compensate for any radial or angular misalignment of the third bearing 160 with respect to the two bearings 320, 330 incorporated within the bearing block, sufficient clearance is provided between the outer surface of the third ball bearings outer ring 162 and the inner radial surface 250 of the rear portion 230 of the rotor.
  • the clearance between the outer surface of the third ball bearing outer ring 162 and the inner radial surface 250 of the rear portion 230 of the rotor is preferably selected to be larger than the cumulative tolerance value for the bearings 320, 330 in the bearing block caused by radial and angular misalignment of these bearings.
  • an elastic element 260 is placed in this gap, for example one or more 0 rings and/or plastic rings that are embedded within the outer ring 162 of the third bearing 160.
  • two 0 rings 260 are located in the clearance between the outer surface of the third ball bearing outer ring 162 and the inner radial surface 250 of the rear portion 230 of the rotor.
  • a tolerance ring could also located in the clearance between the outer surface of the third ball bearing outer ring 162 and the inner radial surface 250 of the rear portion 230 of the rotor .
  • the radius of the inner surface of the third bearings inner ring 161 and the outer surface 140 of the heat sink's annular ring 130 are selected to allow a gap to be formed between these surfaces, which can be used to compensate for radial and angular misalignment between the different bearings.
  • an elastic element is placed between the inner surface of the third bearings inner ring 161 and the outer surface 140 of the heat sink's annular ring 130.
  • the clearance provided between the upper surface of the third ball bearing outer ring 162 and the lower surface 250 of the rear portion 230 can optionally be removed with the third bearing being press fit to the rear portion 230 of the rotor.
  • the rear portion 230 of the rotor is arranged to have a radially extending lip 260 that radially extends from the inner radial surface 250 of the rear portion 230 upon which the third bearing 160 is mounted.
  • the radially extending lip 260 of the rear portion 230 is arranged to extend pass the side of the third bearing 160, thereby at least partially concealing the third bearing 160.
  • the axial length of the heat sink's annular ring 130 is selected so that an axial gap exists between the inner surface of the radially extending lip and the outer surface of the third bearing 160.
  • a bearing preload washer (not shown) is inserted in the axial gap. The use of the preload washer helps to reduce noise from the bearing and reduce wear of the bearing.
  • the dimensions of the rotor' s rear portion and the heat sinks annular ring 130 are selected so that the radius of the third bearing 160 is kept to a minimum while being sufficiently large for any cable and/or conduits required by the motor assembly 40 to be feed through the center of the third bearing 160.
  • the radius of the outer surface of the third ball bearings outer ring 162 is less than half the radius of the rotor.
  • the use of the third bearing 160 provides additional support to a radial wall of the rotor that is opposite to the radial wall used for mounting the rotor to the stator via the bearing block, thereby improving that stability of rotor dynamics, reduces the risk of the cylindrical portion of the rotor touching down on the stator, and reduces motor noise.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

La présente invention concerne un moteur ou un générateur électrique, comprenant un dispositif de couplage agencé pour monter un rotor sur un stator. Le dispositif de couplage comprend un premier élément de couplage couplé à une première paroi radiale du rotor et un second élément de couplage couplé au stator, un premier et un deuxième palier étant montés entre le premier élément de couplage et le second élément de couplage afin de permettre au rotor et au stator de tourner l'un par rapport à l'autre. Le moteur ou le générateur électrique comprend également un agencement d'étanchéité, l'agencement d'étanchéité incluant un troisième palier monté entre une surface d'une seconde paroi radiale du rotor et le stator.
PCT/IB2011/053391 2010-08-11 2011-07-29 Agencement d'étanchéité pour moteur ou générateur électrique WO2012020349A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1013492.2 2010-08-11
GB1013492.2A GB2482704B (en) 2010-08-11 2010-08-11 Sealing arrangement for an electric motor or generator

Publications (2)

Publication Number Publication Date
WO2012020349A2 true WO2012020349A2 (fr) 2012-02-16
WO2012020349A3 WO2012020349A3 (fr) 2012-11-08

Family

ID=42931495

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2011/053391 WO2012020349A2 (fr) 2010-08-11 2011-07-29 Agencement d'étanchéité pour moteur ou générateur électrique

Country Status (2)

Country Link
GB (1) GB2482704B (fr)
WO (1) WO2012020349A2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102963247A (zh) * 2012-12-21 2013-03-13 上海中科深江电动车辆有限公司 轮毂驱动装置
CN109412328A (zh) * 2018-11-02 2019-03-01 宁波安信数控技术有限公司 一种汽车增程器用永磁发电机
JP2020167887A (ja) * 2019-03-29 2020-10-08 株式会社デンソー 回転電機
CN112389189A (zh) * 2020-11-02 2021-02-23 浙江旺得福车业有限公司 用于无人车的轮毂电机

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014202279A1 (de) * 2014-02-07 2015-08-13 Bühler Motor GmbH Elektromotorischer Antrieb
CN105553170A (zh) * 2016-01-29 2016-05-04 陈云飞 无出轴轮毂电机
CN105711430B (zh) * 2016-04-12 2018-07-13 哈尔滨阿曼奇新能源技术开发股份有限公司 太阳能混合动力汽车续航能力增强系统
US11637477B2 (en) 2019-01-02 2023-04-25 Joseph Gentile Rotating machine

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB667479A (en) * 1949-03-18 1952-03-05 British Thomson Houston Co Ltd Improvements in and relating to shaft bearings
US6160331A (en) * 1998-12-14 2000-12-12 Bei, Kimco Magnetics Division Apparatus and method for reducing noise and vibration in an electric motor
JP2005121172A (ja) * 2003-10-20 2005-05-12 Ntn Corp 発電機付車輪用軸受装置
JP2005333704A (ja) * 2004-05-18 2005-12-02 Bridgestone Corp インホイールモータシステム
DE112007000576T5 (de) * 2006-03-24 2009-04-02 Mitsubishi Electric Corp. Motor und Antriebssteuerungsvorrichtung dafür
EP2014917B1 (fr) * 2007-07-10 2017-08-30 Siemens Aktiengesellschaft Réduction maximale de l'entrefer du générateur d'une éolienne avec un arrangement spécifique de roulement de l'arbre
EP2164154A1 (fr) * 2008-09-15 2010-03-17 Siemens Aktiengesellschaft Agencement de stator, générateur et éolienne

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102963247A (zh) * 2012-12-21 2013-03-13 上海中科深江电动车辆有限公司 轮毂驱动装置
CN109412328A (zh) * 2018-11-02 2019-03-01 宁波安信数控技术有限公司 一种汽车增程器用永磁发电机
JP2020167887A (ja) * 2019-03-29 2020-10-08 株式会社デンソー 回転電機
WO2020203271A1 (fr) * 2019-03-29 2020-10-08 株式会社デンソー Machine dynamo-électrique
CN113646998A (zh) * 2019-03-29 2021-11-12 株式会社电装 旋转电机
JP7302235B2 (ja) 2019-03-29 2023-07-04 株式会社デンソー 回転電機
CN112389189A (zh) * 2020-11-02 2021-02-23 浙江旺得福车业有限公司 用于无人车的轮毂电机

Also Published As

Publication number Publication date
WO2012020349A3 (fr) 2012-11-08
GB201013492D0 (en) 2010-09-22
GB2482704B (en) 2014-01-15
GB2482704A (en) 2012-02-15

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