Patents by Inventor Mao Xiong Jiang

Mao Xiong Jiang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200052532
    Abstract: A magnetic core for an electric motor has a ring-shaped yoke, teeth extending outwardly from the yoke, and a tooth tip extending from a distal end of each tooth. The core is formed from curved or coils strip laminations having teeth arranged in tooth groups. Each group has four tooth types arranged sequentially. Each tooth has left and right half tooth tips. The length of the half tooth tips vary according to tooth type. When assembled, first type tooth overlap with third type teeth and second type teeth overlap with fourth type teeth, whereby the opening of the winding slot is narrowed compared to laminations having all identical teeth.
    Type: Application
    Filed: October 1, 2019
    Publication date: February 13, 2020
    Inventors: Yue LI, Mao Xiong JIANG, Jian ZHAO, Yong WANG, Yong LI, Yan Fei LIAO, Ying Song YE, Hai Jun HUA
  • Patent number: 10476321
    Abstract: A magnetic core for an electric motor has a ring-shaped yoke, teeth extending outwardly from the yoke, and a tooth tip extending from a distal end of each tooth. The core is formed from curved or coils strip laminations having teeth arranged in tooth groups. Each group has four tooth types arranged sequentially. Each tooth has left and right half tooth tips. The length of the half tooth tips vary according to tooth type. When assembled, first type tooth overlap with third type teeth and second type teeth overlap with fourth type teeth, whereby the opening of the winding slot is narrowed compared to laminations having all identical teeth.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: November 12, 2019
    Assignee: Johnson Electric International AG
    Inventors: Yue Li, Mao Xiong Jiang, Jian Zhao, Yong Wang, Yong Li, Yan Fei Liao, Ying Song Ye, Hai Jun Hua
  • Patent number: 10340758
    Abstract: A permanent magnet motor has a number of permanent magnets forming permanent magnet poles. Each magnet has an outer surface that is an arc surface with a convex middle. An inner surface of the magnet is a curved surface with a concave middle. The curved surface has an arc surface section and two planar surface sections. The arc surface has a pole arc angle ? of 0.7 to 0.96, and the ratio of an arc angle ? of the arc surface section to the pole arc angle ? is 0.15 to 0.35. The shape of the inner surface of the magnet creates uneven air gaps between the rotor poles and the stator core poles. This reduces cogging torque, increases the motor efficiency, and reduces the motor noise.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: July 2, 2019
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Mao Xiong Jiang, Jian Zhao, Guo Wei Sun, Yong Li, Yong Wang, Hong Jiang Zhao, Yue Li
  • Patent number: 10291087
    Abstract: An electric motor has a wound stator and an outer rotor. A core of the stator has outer and inner annular portions. Tooth portions extend radially outwardly from the outer annular portion. Connecting arms interconnect the outer and inner annular portions. The width of the connecting arms is less than the width of the tooth portions. The ratio of tooth height L1 to distance between the roots of adjacent teeth L3 is in the range of 1.0 and 1.3. The ratio of tooth width T3 to L3 is in the range of 0.8 and 1.0. The ratio of tooth length T1 to L3 is in the range of 0.5 and 0.6. The ratio of T3 to outer diameter of the stator core D is in the range of 0.07 and 0.1.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: May 14, 2019
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Mao Xiong Jiang, Jian Zhao, Guo Wei Sun, Yong Li, Yong Wang, Hong Jiang Zhao, Yue Li
  • Patent number: 10284045
    Abstract: An electric motor has stator with a core of magnetic material, a winding frame covering the core and windings wound around the winding frame. The core has an annular yoke and a plurality of teeth that extend radially outwardly from the yoke. The winding frame is an overmolded structure and has an insulation part that covers the core, a supporting part disposed inward of the insulation part and a plurality of ribs that connect the insulation part and the supporting part. A reinforcing ring is embedded in the supporting part. The strength of the reinforcing ring is higher than the strength of the winding frame. Thus material utilization is improved and the weight of the stator is reduced while ensuring the strength of the supporting part.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: May 7, 2019
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Yue Li, Mao Xiong Jiang, Jian Zhao, Yong Wang, Yong Li, Yan Fei Liao
  • Publication number: 20180083517
    Abstract: The present invention provides an electric motor which includes a stator and a rotor rotatable relative to the stator. The stator includes a stator core and a winding. The stator core includes a yoke and a plurality of teeth extending from the yoke. The winding is wound on the teeth. The stator further comprises a shielding member mounted to at least one axial end of the stator core, and at least one of opposite axial ends of the winding is completely covered by the shielding member. The electric motor of the present invention has a reduced electromagnetic interference (EMI) and improved electromagnetic compatibility (EMC).
    Type: Application
    Filed: September 18, 2017
    Publication date: March 22, 2018
    Inventors: Yue LI, Mao Xiong JIANG, You Qing XIANG, Chi Wai LAI, Ying Song YE, Hai Jun HUA, Ya Ming ZHANG
  • Publication number: 20180045219
    Abstract: A blower includes a mounting base, a motor, an impeller, and an electronic control unit. The motor is mounted to the mounting base from one direction. The impeller is mounted on the motor. The electronic control unit is mounted on the mounting base from an opposite direction. The mounting base defines a through hole. The through hole is axially aligned with a motor shaft to expose an axial end of the motor shaft opposite from the impeller. The electronic control unit comprises a printed circuit board disposed offset from the through hole.
    Type: Application
    Filed: August 11, 2017
    Publication date: February 15, 2018
    Inventors: Yue Li, Mao Xiong JIANG, Jian ZHAO, Yong Wang, Yong Li, Bei Bei HE
  • Publication number: 20170342987
    Abstract: A motor includes a housing, a stator and a rotor. The stator is disposed in the housing. The rotor is rotatably supported on the stator. The motor further includes a shock absorbing member and a fastener. The fastener extends through the shock absorbing member and the stator, and the fastener is fixedly connected to the housing. The motor of the present invention operates with low noise. The present invention further provides a fluid delivery device using the motor.
    Type: Application
    Filed: May 24, 2017
    Publication date: November 30, 2017
    Inventors: Yue LI, Mao Xiong JIANG, Ke Lin ZHOU, Jian ZHAO, Yong LI, Yong WANG
  • Publication number: 20170338715
    Abstract: A motor includes a rotor having permanent magnets, and a stator having a stator core. The stator core includes a magnetic yoke and a plurality of stator teeth. Each stator tooth includes a tooth portion and a pole shoe. A slot with a width C is defined between neighboring pole shoes. A minimum distance between one of the pole shoes and the corresponding one of the permanent magnets is defined as D. A distance from a slot center point of one of the slot of the stator core to an air gap centreline along a radial direction of the stator core is defined as B. A distance from the air gap centerline to the corresponding one of the permanent magnets along the axial direction of the stator core through the slot center point is defined as A. The values of A, B, C and D satisfy the following formulas: A=B; A+B=(4˜5)*D; C=(0.9˜1.1)*(A+B).
    Type: Application
    Filed: May 17, 2017
    Publication date: November 23, 2017
    Inventors: Yue LI, Mao Xiong JIANG, Xiu Feng ZHANG, Heng Gang WU, Hai Jun HUA, Jian ZHAO, Yong LI, Yong WANG, Ya Ming ZHANG
  • Publication number: 20170179803
    Abstract: A motor includes a stator, a rotor rotatable relative to the stator, a support member, and a circuit assembly. The circuit assembly includes a plurality of electronic components. The rotor is rotatably mounted to the support member. The stator is received in the rotor. The stator is fixed to the support member, and the support member is at least partially received in an inner side of the stator. A portion of the support member received in the inner side of the stator defines a receiving space, and at least part of the electronic components of the circuit assembly is received in the receiving space of the support member. The support member is partially received in the inner side of the stator, and the circuit assembly is at least partially received in the support member, which makes the motor have a relatively smaller axial size.
    Type: Application
    Filed: December 14, 2016
    Publication date: June 22, 2017
    Inventors: Yue LI, Mao Xiong JIANG, You Qing XIANG, Jian ZHAO, Yong WANG, Yong LI, Yan Fei LIAO
  • Publication number: 20170149318
    Abstract: A single phase permanent magnet brushless motor includes a stator and a rotor. The stator includes an outer housing, a stator core mounted in the outer housing, and windings wound around the stator core. The stator core includes a yoke and a plurality of poles extending inwardly from the yoke. The yoke is fixed to the outer housing by welding. Reliability of the present motor is enhanced.
    Type: Application
    Filed: November 21, 2016
    Publication date: May 25, 2017
    Inventors: Yue LI, Wai Lun Allan KWAN, Mao Xiong JIANG, Jing Xin SHI, Chui You ZHOU, Ji Cheng PAN, Ji Dong CHAI, Wan You WANG, Yan Fang ZHI
  • Patent number: 9627933
    Abstract: A brushless motor includes a stator comprising a stator core with teeth protruding inwardly and windings wound on the teeth, and a rotor comprising a shaft, a rotor core fixed to the shaft, and a ring magnet fixed to the circumferential outer surface of the rotor core. The ring magnet includes a plurality of magnetic poles radially magnetized so that north poles and south poles are arranged alternately in the circumferential direction, boundary lines between adjacent magnetic poles being skewed by an angle ? relative to an axis of the shaft. A plurality of grooves are formed in a circumferential outer surface of the rotor core. Each groove extends from one axial end to the other axial end of the rotor core, has a circumferential width smaller than each of the magnetic poles, and is covered by the ring magnet with a void formed between the groove and the ring magnet.
    Type: Grant
    Filed: August 22, 2014
    Date of Patent: April 18, 2017
    Assignee: Johnson Electric S.A.
    Inventors: Mao Xiong Jiang, Yue Li, Tao Zhang, San Yuan Xiao, Lik Hon Chan
  • Publication number: 20160352159
    Abstract: A magnetic core for an electric motor has a ring-shaped yoke, teeth extending outwardly from the yoke, and a tooth tip extending from a distal end of each tooth. The core is formed from curved or coils strip laminations having teeth arranged in tooth groups. Each group has four tooth types arranged sequentially. Each tooth has left and right half tooth tips. The length of the half tooth tips vary according to tooth type. When assembled, first type tooth overlap with third type teeth and second type teeth overlap with fourth type teeth, whereby the opening of the winding slot is narrowed compared to laminations having all identical teeth.
    Type: Application
    Filed: May 27, 2016
    Publication date: December 1, 2016
    Inventors: Yue LI, Mao Xiong JIANG, Jian ZHAO, Yong WANG, Yong LI, Yan Fei LIAO, Ying Song YE, Hai Jun HUA
  • Publication number: 20160226322
    Abstract: A motor armature includes a core and windings wound around the core. The core includes an annular yoke and a plurality of teeth extending radially outwardly from the yoke. Each of the teeth includes a winding portion connected with the yoke and a tip formed at a distal end of the winding portion. Each tip has circumferential opposite ends extending beyond the winding portion. A slot opening is forming between ends of adjacent tips. Each of the teeth has a slit on a single circumferential side thereof such that one of the ends of the tip is outwardly tilted relative to the other of end at an original position and is bendable inwardly about the slit to a deformed position where a width of the slot opening is less than that of the slot opening at the original position.
    Type: Application
    Filed: January 29, 2016
    Publication date: August 4, 2016
    Inventors: Yue LI, Mao Xiong JIANG, Jian ZHAO, Yong WANG, Yong LI, Yan Fei LIAO
  • Publication number: 20160226330
    Abstract: An electric motor has a support seat, a stator and a rotor. The rotor is rotatably mounted on the support seat. The stator comprises a magnetic core, a winding frame wrapped over the core, and windings wound around the winding frame. The core includes a ring-shaped yoke and a plurality of teeth extending outwardly from the yoke. The winding frame comprises an insulating part wrapped around the core and a connecting part within the insulating part to fixedly connect to the support seat. The core is fixed to the support seat by the winding frame, which saves material and reduces the weight of the stator and the motor.
    Type: Application
    Filed: January 29, 2016
    Publication date: August 4, 2016
    Inventors: YUE LI, YONG WANG, YONG LI, WAI FAT PANG, YA MING ZHANG, YAN FEI LIAO, YING SONG YE, MAO XIONG JIANG, JIAN ZHAO
  • Publication number: 20160226320
    Abstract: An electric motor has stator with a core of magnetic material, a winding frame covering the core and windings wound around the winding frame. The core has an annular yoke and a plurality of teeth that extend radially outwardly from the yoke. The winding frame is an overmolded structure and has an insulation part that covers the core, a supporting part disposed inward of the insulation part and a plurality of ribs that connect the insulation part and the supporting part. A reinforcing ring is embedded in the supporting part. The strength of the reinforcing ring is higher than the strength of the winding frame. Thus material utilization is improved and the weight of the stator is reduced while ensuring the strength of the supporting part.
    Type: Application
    Filed: January 29, 2016
    Publication date: August 4, 2016
    Inventors: Yue LI, Mao Xiong JIANG, Jian ZHAO, Yong WANG, Yong LI, Yan Fei LIAO
  • Patent number: 9397525
    Abstract: An electric motor includes a stator and a rotor installed in the stator. The stator has a laminated stator core and at least two stator windings wound on the stator core. The stator core has at least two stator poles facing the rotor and at least two yokes connecting adjacent stator poles. T stator core is constituted by at least two separate members joined together. The at least two stator poles are only arranged at a single one of the at least two separate members.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: July 19, 2016
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: Yue Li, Mao Xiong Jiang, Bao Ting Liu, Chui You Zhou, Jin Yun Gan, Jian Zhao, Yong Li, Hong Wei Zhang
  • Patent number: 9343934
    Abstract: An electric motor has a wound stator and a permanent magnet rotor. The rotor includes a shaft, a hub fixed on the shaft, a plurality of rotor core segments and magnets fixed around the hub. The rotor core segment includes at least two rotor blocks inwardly extending from the innermost portion thereof. The hub includes a plurality of hub blocks equidistantly and outwardly extending from the outer surface thereof. The rotor blocks of each rotor core segment engage with at least one hub block to fix the rotor core segment to the hub. The number of rotor blocks is greater than the number of hub blocks.
    Type: Grant
    Filed: August 21, 2012
    Date of Patent: May 17, 2016
    Assignee: Johnson Electric S.A.
    Inventors: Jian Zhao, Yue Li, Mao Xiong Jiang, Chui You Zhou, Yong Wang, Ya Ming Zhang
  • Patent number: 9263930
    Abstract: An electric machine has a stator and a rotor. The stator has a housing and at least one pair of magnetic poles. Each magnetic pole has a primary magnet and two auxiliary magnets disposed on respective sides of the primary magnet. All of the magnets are disposed on an inner surface of the housing. All the magnets of a magnetic pole have the same polarity.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: February 16, 2016
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: Mao Xiong Jiang, Yue Li, Jian Zhao, Yong Li, Yu Hong Guo
  • Patent number: 9225209
    Abstract: A permanent magnet rotor includes a shaft, a rotor core fixed to the shaft, and multiple magnet sets. The rotor core has multiple groove sets for receiving the magnet sets. Each groove set has two grooves spaced apart by a first section of the rotor core. The first section has a width gradually decreasing from a radially inner end to a radially outer end. Each groove has a width gradually increasing from a radially inner end to a radially outer end. Each magnet set includes two magnets respectively received in the grooves of a respective groove set. The magnets of a magnet set are magnetized in a same direction, and every two adjacent magnet sets are magnetized in contrary directions creating multiple magnetic poles. The number of magnetic poles is equal to the number of magnet sets.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: December 29, 2015
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: Yue Li, Mao Xiong Jiang, Jian Zhao, Shi Xing Huang, Ya Ming Zhang, Xiao Ning Zhu