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公开(公告)号：US20220344082A1
公开(公告)日：2022-10-27
申请号：US17451721
申请日：2021-10-21
发明人： Seok Jin Ha , Sang Hwa Do , Kyoung Bum Kim , Nyeon Han Hong , Koon Seung Kong , Dong Hwan Kim , Sang Hyub Lee
摘要： Disclosed is a segmented magnet which may adjust the application direction of a heavy rare earth element for grain boundary diffusion depending on the magnetization direction of the segmented magnet so as to simplify the manufacturing process of the segmented magnet while reducing eddy current loss, and a method for manufacturing the same. The method includes preparing a plurality of permanent magnet parent bodies having a constant magnetization direction, diffusing a diffusion material into the prepared permanent magnet parent bodies via a pair of planes thereof opposite each other and parallel to the magnetization direction along grain boundaries so as to form a pair of diffusing surfaces, preparing a permanent magnet assembly by stacking the permanent magnet parent bodies in a line such that the diffusing surfaces thereof face each other, and segmenting the permanent magnet assembly into a plurality of pieces along planes perpendicular to the magnetization direction.
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公开(公告)号：US20230318374A1
公开(公告)日：2023-10-05
申请号：US18206272
申请日：2023-06-06
发明人： Sang Hwa Do , Nyeon Han Hong , Kyoung Bum Kim
CPC分类号： H02K1/276 , H02K15/03 , H02K2201/09
摘要： A method of fixing a permanent magnet in a rotor core includes: forming a magnet accommodation portion into which a permanent magnet is to be inserted and an internal hole defined in an area adjacent to one end of the magnet accommodation portion; inserting the permanent magnet into the magnet accommodation portion; performing a caulking process by inserting a bar into the internal hole; and pressing a pressing portion toward the permanent magnet using the bar. In particular, the pressing portion is provided between the internal hole and the magnet accommodation portion
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公开(公告)号：US20230223827A1
公开(公告)日：2023-07-13
申请号：US17879553
申请日：2022-08-02
发明人： Sang Hwa Do , Nyeon Han Hong , Kyoung Bum Kim , Yong Sung Jang
IPC分类号： H02K15/12 , H02K15/03 , H02K1/28 , H02K1/2791
CPC分类号： H02K15/12 , H02K15/03 , H02K1/28 , H02K1/2791
摘要： A motor core assembly and a manufacturing method for the motor core assembly include a permanent magnet inside a motor that may be recovered, in its original state without damage and at a low cost, from a motor to be disposed of together with a device when the device to which the motor is applied is disposed of in a state in which the permanent magnet wrapped with an injection part is inserted into a rotor core. Accordingly, the number of manufacturing processes and the cost may be reduced.
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公开(公告)号：US11722023B2
公开(公告)日：2023-08-08
申请号：US17091175
申请日：2020-11-06
发明人： Sang Hwa Do , Nyeon Han Hong , Kyoung Bum Kim
CPC分类号： H02K1/276 , H02K15/03 , H02K2201/09
摘要： A structure for fixing a permanent magnet in a rotor core. The structure includes a magnet accommodation portion into which a permanent magnet is to be inserted, an internal hole formed in an area adjacent to one end of the magnet accommodation portion, a pressing portion provided between the magnet accommodation portion and the internal hole. The pressing portion forms a convex shape toward the permanent magnet to be in contact with the permanent magnet.
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5.发明申请ROTOR PERMANENT MAGNET APPARATUS FOR DRIVE MOTOR BASED ON TEMPERATURE DISTRIBUTION 有权基于温度分配的驱动电机转子永磁电机公开(公告)号：US20140159528A1
公开(公告)日：2014-06-12
申请号：US13851369
申请日：2013-03-27
发明人： Kyoung Bum Kim , Sang Hoon Moon , Hyoung Jun Cho , Jung Shik Kim
IPC分类号： H02K1/02
CPC分类号： H02K1/02 , H01F41/0293
摘要： Disclosed herein is a rotor permanent magnet apparatus for a drive motor based on temperature distribution. The permanent magnet may enhance coercivity without a substantial decrease in magnetic flux density Br by applying a grain boundary diffusion process of diffusing dysprosium on the surface of the permanent magnet based on the temperature distribution of the permanent magnet
摘要翻译： 本文公开了一种基于温度分布的用于驱动电动机的转子永磁体装置。 基于永久磁铁的温度分布，永磁体可以通过在永磁体的表面上施加扩散镝的晶界扩散过程而提高矫顽力，而不会明显降低磁通密度Br
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6.发明申请公开(公告)号：US20220063422A1
公开(公告)日：2022-03-03
申请号：US17143764
申请日：2021-01-07
发明人： Sang Hwa Do , Nyeon Han Hong , Myung Gyu Kim , Kyoung Bum Kim
摘要： A motor noise reduction control apparatus of an eco-friendly vehicle includes: a driving mode selector for selecting one of a high fuel economy driving mode and a low-noise driving mode; and a motor controller configured to generate a current command for motor drive using a maximum motor efficiency control application current map when the high fuel economy driving mode is selected, and to generate a current command for motor drive using a minimum torque ripple control application current map when the low-noise driving mode is selected.
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公开(公告)号：US20210111602A1
公开(公告)日：2021-04-15
申请号：US16939551
申请日：2020-07-27
发明人： Hong Seok Yang , Sang Hwa Do , Ji Yeon Kim , Kyoung Bum Kim
摘要： The present disclosure provides a motor having an asymmetric rotor core that can more effectively improve operation efficiency of a motor and improve NVH performance in correspondence to the tendency of high power and high efficiency of motors by asymmetrically forming a first slot and a second slot for inserting permanent magnets of the rotor core, arranging a first permanent magnet and a second permanent magnet at different embedment angles, and forming a separation wall inclined at a predetermined angle and having a uniform thickness between the first slot and the second slot.
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公开(公告)号：US20200212740A1
公开(公告)日：2020-07-02
申请号：US16566114
申请日：2019-09-10
发明人： Sang Hwa Do , Kyoung Bum Kim , Yeon Ho Kim , Jae Bum Park , Nyeon Han Hong , Hee Ra Lee
IPC分类号： H02K1/27
摘要： An interior permanent magnet electric motor forms a buried angle of a left permanent magnet of a slot part of a rotor differently from a buried angle of a right permanent magnet of the slot part of the rotor, so as to reduce torque ripple while sufficiently maintaining motor efficiency as compared to an I-type rotor to effectively improve noise, vibration, and harshness performance.
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9.发明授权公开(公告)号：US12054054B2
公开(公告)日：2024-08-06
申请号：US17143764
申请日：2021-01-07
发明人： Sang Hwa Do , Nyeon Han Hong , Myung Gyu Kim , Kyoung Bum Kim
CPC分类号： B60L15/2045 , H02P6/10 , B60L2240/421 , B60L2240/423 , B60L2240/427 , B60L2240/429
摘要： A motor noise reduction control apparatus of an eco-friendly vehicle includes: a driving mode selector for selecting one of a high fuel economy driving mode and a low-noise driving mode; and a motor controller configured to generate a current command for motor drive using a maximum motor efficiency control application current map when the high fuel economy driving mode is selected, and to generate a current command for motor drive using a minimum torque ripple control application current map when the low-noise driving mode is selected.
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公开(公告)号：US11611251B2
公开(公告)日：2023-03-21
申请号：US16939551
申请日：2020-07-27
发明人： Hong Seok Yang , Sang Hwa Do , Ji Yeon Kim , Kyoung Bum Kim
摘要： The present disclosure provides a motor having an asymmetric rotor core that can more effectively improve operation efficiency of a motor and improve NVH performance in correspondence to the tendency of high power and high efficiency of motors by asymmetrically forming a first slot and a second slot for inserting permanent magnets of the rotor core, arranging a first permanent magnet and a second permanent magnet at different embedment angles, and forming a separation wall inclined at a predetermined angle and having a uniform thickness between the first slot and the second slot.
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