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公开(公告)号：US20170063180A1
公开(公告)日：2017-03-02
申请号：US15249887
申请日：2016-08-29
Applicant: Johnson Electric S.A.
Abstract: A single phase permanent magnet motor includes a stator. The stator includes a stator core and windings. The stator core includes a ring portion, tooth bodies extending radially from the ring portion, and a pole shoe extending from a distal end to two circumferential sides of each tooth body. Each pole shoe defines a positioning slot. A center of each positioning slot is offset from a center of symmetry of one adjacent tooth body so that a torque fluctuation of an output torque of the single phase permanent magnet motor during operation is less than 50%. As a result, the motor vibration and noise are small.
Abstract translation: 单相永磁电动机包括定子。 定子包括定子铁芯和绕组。 定子铁芯包括环部，从环部径向延伸的齿体，以及从每个齿体的远端延伸到两个圆周侧的极靴。 每个极靴定义一个定位槽。 每个定位槽的中心偏离一个相邻齿体的对称中心，使得单相永磁电动机的运行中的输出转矩的转矩波动小于50％。 结果，电动机的振动和噪音小。
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公开(公告)号：US20180006541A1
公开(公告)日：2018-01-04
申请号：US15632980
申请日：2017-06-26
Applicant: Johnson Electric S.A.
Inventor： Yue LI , Chui You ZHOU , Jie CHAI , Tao ZHANG , Yong WANG
CPC classification number: H02K21/145 , H02K1/2746 , H02K13/00 , H02K21/16 , H02K21/24 , H02K29/03 , H02K29/08
Abstract: A single phase motor includes an excitation part and an armature part. The excitation part includes N magnets that result in 2N magnetic poles being formed on the excitation part, and the armature part includes 2N tooth portions forming 2N pole portions, where N is an integer greater than one. The present invention further provides a rotor for the single phase motor. The present invention allows each magnet to be fully used, reduces the number of the magnets used in the single phase phase and the workload during motor assembly, as well as reduces the motor fabriction cost.
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公开(公告)号：US20170222527A1
公开(公告)日：2017-08-03
申请号：US15421544
申请日：2017-02-01
Applicant: Johnson Electric S.A.
Inventor： Yue LI , Tao ZHANG , Jie CHAI , Chui You ZHOU
CPC classification number: H02K21/16 , H02K1/146 , H02K1/2706 , H02K1/276 , H02K19/04 , H02K29/03 , H02K2213/03
Abstract: A single phase motor includes a stator and a rotor. The stator includes a stator core. The stator core includes an outer yoke and a plurality of stator teeth. Each stator tooth includes a winding portion and a pole shoe coupled to the winding portion. The rotor includes a rotor core and a plurality of permanent magnets. The permanent magnets are embedded in the rotor core and evenly distributed in the circumferential direction of the rotor core. Each permanent magnet has a stripe-shaped asymmetric structure, and cross-sectional areas at both ends of each permanent magnet are not equal. The initial position of the rotor is able to avoid the dead point position, and the start-up of the motor is stable. The present invention also provides a rotor for the single phase motor.
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公开(公告)号：US20170222498A1
公开(公告)日：2017-08-03
申请号：US15421527
申请日：2017-02-01
Applicant: Johnson Electric S.A.
Inventor： Yue LI , Tao ZHANG , Jie CHAI , Chui You ZHOU
IPC: H02K1/14 , H02K15/02 , H02K15/095 , H02K3/18
CPC classification number: H02K1/146 , H02K3/18 , H02K15/022 , H02K15/095 , H02K2213/09
Abstract: A motor stator and a method for forming the motor stator are provided. The method includes the steps of: providing a plurality of plates or metal powder, forming the plate or the metal powder into a plurality of magnetic laminations, wherein each magnetic lamination comprises a yoke portion and a plurality of stator teeth, each of the stator teeth comprises a tooth portion and two pole shoes, and one end of one of the pole shoes extends towards the direction away from the yoke portion to form a bent portion; axially overlapping the plurality of magnetic laminations and fixing the magnetic laminations to form a stator core; winding wires to the stator core; and bending the bent portions towards adjacent stator teeth, to form a smooth transition connection between the bent portions and the pole shoes connected thereto. The method makes the winding convenient and fast.
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公开(公告)号：US20160341202A1
公开(公告)日：2016-11-24
申请号：US15157687
申请日：2016-05-18
Applicant: Johnson Electric S.A.
Inventor： Jie CHAI , Ching Hang LEUNG , Kwong Yip POON , Chun Kei YU , Wei Feng YUAN , Tao ZHANG , San Yuan XIAO
Abstract: An electric pump has a pump body, a pump magnet received in the pump body, an impeller received in the pump body and fixed to the pump magnet, and a disc type electric motor. The electric motor includes a stator, disc type coils fixed to a surface of the stator, a rotor rotatably positioned above the coils, and a circuit board electrically connected to the coils. The rotor has a rotor magnet positioned beneath the pump body and magnetically coupled to the pump magnet. When the coils are energized, an axial magnetic field is generated to drive the rotor and, through the magnetic coupling between the rotor magnet and the pump magnet, rotate the impeller.
Abstract translation: 电动泵具有泵体，容纳在泵体内的泵用磁体，容纳在泵体内并固定在泵用磁铁上的叶轮，以及盘式电动机。 电动机包括定子，固定在定子的表面上的盘状线圈，可旋转地定位在线圈上方的转子以及与线圈电连接的电路板。 转子具有位于泵体下方并与磁铁耦合的转子磁体。 当线圈通电时，产生轴向磁场以驱动转子，并且通过转子磁体和泵磁体之间的磁耦合旋转叶轮。
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Patent Agency Ranking
公开(公告)号：US20140217847A1
公开(公告)日：2014-08-07
申请号：US14172023
申请日：2014-02-04
Applicant: Johnson Electric S.A.
Inventor： Wai Lun Allan KWAN , Jie CHAI , Tao ZHANG , Jingping TAO
IPC: H02K1/27
CPC classification number: H02K1/2793 , H02K1/2786 , H02K29/03
Abstract: A brushless permanent magnet electric motor (10) configured to have high saliency and low cogging torque, comprises a stator (30) having a plurality of stator teeth (36), and a rotor (50) having a permanent magnet (56) having a plurality of magnetic poles. The stator teeth (36) contain pole heads (37) having grooves (39) substantially parallel to the axial direction of the motor (10) formed thereon, which function to increase the number of magnetic stator poles of the motor (10), increasing saliency. The permanent magnet (56) contains a plurality of notches (58) on one side positioned between the plurality of magnetic poles, configured to decrease the coefficient of pole arc of the rotor (50), thereby decreasing cogging torque.
Abstract translation: 具有高凸度和低齿槽转矩的无刷永磁电动机（10）包括具有多个定子齿（36）的定子（30）和具有永磁体（56）的转子（50） 多个磁极。 定子齿（36）包括具有大致平行于形成在其上的电动机（10）的轴向方向的槽（39）的极头（37），其功能是增加电动机（10）的磁性定子极数，增加 显着性 永磁体（56）在位于多个磁极之间的一侧上包含多个切口（58），其构造为降低转子（50）的极弧系数，从而减小齿槽转矩。
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公开(公告)号：US20170353095A1
公开(公告)日：2017-12-07
申请号：US15601608
申请日：2017-05-22
Applicant: Johnson Electric S.A.
Inventor： Ronny KEIL , Jie CHAI , Jing CHEN , Tao ZHANG , Yue LI
CPC classification number: H02K49/102 , F04B35/04 , F04F5/20 , H02K1/2786
Abstract: A driving device configured to drive a rotary body includes a motor assembly and a plurality of first magnets disposed on the rotary body along a circumferential direction thereof. Sides of the magnets facing the motor assembly form a plurality of magnetic poles. Upon rotation of the motor assembly, the magnets is driven by magnetic interaction between the motor assembly and the magnetic member to rotate to drive the rotary body to rotate. The present invention also provides a bladeless fan including this driving device.
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公开(公告)号：US20170244299A1
公开(公告)日：2017-08-24
申请号：US15435786
申请日：2017-02-17
Applicant: Johnson Electric S.A.
Inventor： Kwong Yip POON , Jie CHAI , San Yuan XIAO , Kun Zhou LU , Tao ZHANG
CPC classification number: H02K5/225 , H02K3/50 , H02K3/522 , H02K2203/06 , H02K2203/12
Abstract: An endcap assembly for an electric motor and a stator having same are provided. The endcap assembly includes an endcap, a first wire, and two terminals corresponding to the first wire. The two terminals are fixed to the endcap and configured to connect with corresponding windings of the electric motor. The endcap defines a first accommodating groove extending from one terminal to the other terminal. The first wire is received in the first accommodating groove, and two ends of the first wire are electrically connected to the two terminals, respectively.
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公开(公告)号：US20170222524A1
公开(公告)日：2017-08-03
申请号：US15421535
申请日：2017-02-01
Applicant: Johnson Electric S.A.
Inventor： Yue LI , Tao ZHANG , Jie CHAI , Chui You ZHOU
Abstract: A single phase motor includes a stator and a rotor. The stator includes a stator core. The stator core includes an outer yoke and a plurality of stator teeth. Each stator tooth includes a winding portion and a pole shoe coupled to the winding portion. The rotor includes a rotor core and a plurality of permanent magnets. The permanent magnets are evenly spaced and embedded in the rotor core. An outer circumferential wall of the rotor core is an irregular cylinder and includes a plurality of spaced circular arc surfaces and transition surfaces. The starting of the single phase motor is stable and reliable. The present invention also provides a rotor for the single phase motor.
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公开(公告)号：US20170207669A1
公开(公告)日：2017-07-20
申请号：US15407649
申请日：2017-01-17
Applicant: Johnson Electric S.A.
Inventor： Tao ZHANG , Jie CHAI , San Yuan XIAO
CPC classification number: H02K1/146 , H02K1/2706 , H02K1/276 , H02K5/15 , H02K7/14 , H02K9/06 , H02K21/16 , H02K2213/03
Abstract: A motor including a motor outer magnetic core and a motor inner magnetic core. The motor outer magnetic core includes an annular yoke and a plurality of teeth. Each tooth includes a tooth body and a pole shoe. The pole shoes of the plurality of teeth cooperatively define a discontinuous inner ring. The motor inner magnetic core is surrounded by the inner ring. The motor inner magnetic core includes a central portion and a plurality of pole portions surrounding an outer side of the central portion. Each of the pole portions and the central portion define a gap therebetween for receiving a permanent magnet. First connecting portions are connected between adjacent ones of the pole portions. Second connecting portions are connected between the first connecting portions and the central portion.
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