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公开(公告)号：US20110080065A1
公开(公告)日：2011-04-07
申请号：US12889849
申请日：2010-09-24
申请人： Naoki Watanabe , Yuhito Doi , Takehisa Minowa , Hajime Nakamura , Koichi Hirota
发明人： Naoki Watanabe , Yuhito Doi , Takehisa Minowa , Hajime Nakamura , Koichi Hirota
IPC分类号： H02K21/24
CPC分类号： H02K1/2793 , H01F41/0293
摘要： An axial gap-type permanent magnetic rotating machine comprises a rotor comprising a rotating shaft having an axis of rotation, a rotor yoke of disc shape radially extending from the shaft, and a plurality of permanent magnet segments circumferentially arranged on a surface of the rotor yoke such that each permanent magnet segment may have a magnetization direction parallel to the axis of rotation, and a stator having a plurality of circumferentially arranged coils and disposed to define an axial gap with the rotor. In the rotor, each permanent magnet segment is an assembly of two or more divided permanent magnet pieces, and the coercive force near the surface of the magnet piece is higher than that in the interior of the magnet piece.
摘要翻译： 一种轴向间隙型永磁旋转机械，包括：转子，其包括具有旋转轴的旋转轴，从轴径向延伸的盘形转子轭，以及周向布置在转子轭的表面上的多个永磁体段 使得每个永磁体段可以具有平行于旋转轴线的磁化方向，以及具有多个周向排列的线圈并且被设置成限定与转子的轴向间隙的定子。 在转子中，每个永磁体段是两个或更多个分开的永磁体片的组件，并且磁体片表面附近的矫顽力高于磁片内部的矫顽力。
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公开(公告)号：US08823235B2
公开(公告)日：2014-09-02
申请号：US12889849
申请日：2010-09-24
申请人： Naoki Watanabe , Yuhito Doi , Takehisa Minowa , Hajime Nakamura , Koichi Hirota
发明人： Naoki Watanabe , Yuhito Doi , Takehisa Minowa , Hajime Nakamura , Koichi Hirota
IPC分类号： H02K1/27
CPC分类号： H02K1/2793 , H01F41/0293
摘要： An axial gap-type permanent magnetic rotating machine comprises a rotor comprising a rotating shaft having an axis of rotation, a rotor yoke of disc shape radially extending from the shaft, and a plurality of permanent magnet segments circumferentially arranged on a surface of the rotor yoke such that each permanent magnet segment may have a magnetization direction parallel to the axis of rotation, and a stator having a plurality of circumferentially arranged coils and disposed to define an axial gap with the rotor. In the rotor, each permanent magnet segment is an assembly of two or more divided permanent magnet pieces, and the coercive force near the surface of the magnet piece is higher than that in the interior of the magnet piece.
摘要翻译： 一种轴向间隙型永磁旋转机械，包括：转子，其包括具有旋转轴的旋转轴，从轴径向延伸的盘形转子轭，以及周向布置在转子轭的表面上的多个永磁体段 使得每个永磁体段可以具有平行于旋转轴线的磁化方向，以及具有多个周向排列的线圈并且被设置成限定与转子的轴向间隙的定子。 在转子中，每个永磁体段是两个或更多个分开的永磁体片的组件，并且磁体片表面附近的矫顽力高于磁片内部的矫顽力。
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公开(公告)号：US08269392B2
公开(公告)日：2012-09-18
申请号：US12893772
申请日：2010-09-29
申请人： Yuhito Doi , Takehisa Minowa , Hajime Nakamura , Koichi Hirota
发明人： Yuhito Doi , Takehisa Minowa , Hajime Nakamura , Koichi Hirota
IPC分类号： H02K21/12
CPC分类号： H02K1/276 , H01F1/0577 , H01F41/0293 , H02K1/278
摘要： A permanent magnet rotary machine comprises a rotor comprising a rotor core and a plurality of permanent magnet segments embedded in the rotor core and a stator having a plurality of coils and disposed to define a gap with the rotor, or a permanent magnet rotary machine comprises a rotor comprising a rotor core and a plurality of permanent magnet segments mounted on the surface of the rotor core and a stator having a plurality of coils and disposed to define a gap with the rotor. In the rotor, each permanent magnet segment is an assembly of divided permanent magnet pieces, the coercive force near the surface of the magnet piece is higher than that in the interior of the magnet piece, and the assembly allows for electrical conduction between the magnet pieces.
摘要翻译： 永磁旋转机械包括转子，转子包括转子芯和嵌入在转子芯中的多个永磁体段，以及具有多个线圈并且设置成与该转子间隔开的定子，或者永磁旋转机械包括： 转子，其包括转子芯和安装在转子芯的表面上的多个永磁体段和具有多个线圈并设置成与转子限定间隙的定子。 在转子中，每个永磁体段是分开的永久磁体块的组件，靠近磁体片表面的矫顽力高于磁片内部的矫顽力，并且组件允许磁体片之间的导电 。
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公开(公告)号：US20110079325A1
公开(公告)日：2011-04-07
申请号：US12889835
申请日：2010-09-24
申请人： Yuhito Doi , Takehisa Minowa , Hajime Nakamura , Koichi Hirota
发明人： Yuhito Doi , Takehisa Minowa , Hajime Nakamura , Koichi Hirota
CPC分类号： H02K15/03 , H01F7/0221 , H02K1/2766 , Y10T29/49009 , Y10T29/49012
摘要： An interior permanent magnet (IPM) rotary machine comprises a rotor comprising a rotor yoke having bores and a plurality of permanent magnet segments disposed in the bores of the rotor yoke, each permanent magnet segment consisting of a plurality of magnet pieces. The rotor is assembled by inserting the plurality of unbound magnet pieces in each bore for stacking the magnet pieces, and fixedly securing the stacked magnet pieces in the bore.
摘要翻译： 内置永磁（IPM）旋转机器包括转子，该转子包括具有孔的转子轭和设置在转子轭的孔中的多个永磁体段，每个永磁体段由多个磁片组成。 通过将多个未结合的磁体片插入每个孔中以堆叠磁体片并将堆叠的磁体片牢固地固定在孔中来组装转子。
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公开(公告)号：US08756793B2
公开(公告)日：2014-06-24
申请号：US12889835
申请日：2010-09-24
申请人： Yuhito Doi , Takehisa Minowa , Hajime Nakamura , Koichi Hirota
发明人： Yuhito Doi , Takehisa Minowa , Hajime Nakamura , Koichi Hirota
IPC分类号： H02K15/02
CPC分类号： H02K15/03 , H01F7/0221 , H02K1/2766 , Y10T29/49009 , Y10T29/49012
摘要： An interior permanent magnet (IPM) rotary machine comprises a rotor comprising a rotor yoke having bores and a plurality of permanent magnet segments disposed in the bores of the rotor yoke, each permanent magnet segment consisting of a plurality of magnet pieces. The rotor is assembled by inserting the plurality of unbound magnet pieces in each bore for stacking the magnet pieces, and fixedly securing the stacked magnet pieces in the bore.
摘要翻译： 内置永磁（IPM）旋转机器包括转子，该转子包括具有孔的转子轭和设置在转子轭的孔中的多个永磁体段，每个永磁体段由多个磁片组成。 通过将多个未结合的磁体片插入每个孔中以堆叠磁体片并将堆叠的磁体片牢固地固定在孔中来组装转子。
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公开(公告)号：US20110080066A1
公开(公告)日：2011-04-07
申请号：US12893772
申请日：2010-09-29
申请人： Yuhito Doi , Takehisa Minowa , Hajime Nakamura , Koichi Hirota
发明人： Yuhito Doi , Takehisa Minowa , Hajime Nakamura , Koichi Hirota
IPC分类号： H02K21/14
CPC分类号： H02K1/276 , H01F1/0577 , H01F41/0293 , H02K1/278
摘要： A permanent magnet rotary machine comprises a rotor comprising a rotor core and a plurality of permanent magnet segments embedded in the rotor core and a stator having a plurality of coils and disposed to define a gap with the rotor, or a permanent magnet rotary machine comprises a rotor comprising a rotor core and a plurality of permanent magnet segments mounted on the surface of the rotor core and a stator having a plurality of coils and disposed to define a gap with the rotor. In the rotor, each permanent magnet segment is an assembly of divided permanent magnet pieces, the coercive force near the surface of the magnet piece is higher than that in the interior of the magnet piece, and the assembly allows for electrical conduction between the magnet pieces.
摘要翻译： 永磁旋转机械包括转子，转子包括转子芯和嵌入在转子芯中的多个永磁体段，以及具有多个线圈并且设置成与该转子间隔开的定子，或者永磁旋转机械包括： 转子，其包括转子芯和安装在转子芯的表面上的多个永磁体段和具有多个线圈并设置成与转子限定间隙的定子。 在转子中，每个永磁体段是分开的永久磁体块的组件，靠近磁体片表面的矫顽力高于磁片内部的矫顽力，并且组件允许磁体片之间的导电 。
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公开(公告)号：US08420010B2
公开(公告)日：2013-04-16
申请号：US11916498
申请日：2007-03-28
申请人： Hajime Nakamura , Takehisa Minowa , Koichi Hirota
发明人： Hajime Nakamura , Takehisa Minowa , Koichi Hirota
IPC分类号： B22F7/00
CPC分类号： C23C10/30 , B22F3/24 , B22F2003/241 , B22F2003/242 , B22F2003/247 , B22F2003/248 , C21D6/00 , C22C38/005 , C22C2202/02 , C23C10/28 , C23C10/52 , C23C24/08 , H01F1/0577 , H01F41/0293
摘要： A method for preparing a rare earth permanent magnet material is characterized by comprising the steps of disposing a powder mixture on a surface of a sintered magnet body of R1—Fe—B composition wherein R1 is at least one element selected from rare earth elements inclusive of Sc and Y, the powder mixture comprising a powder containing at least 0.5% by weight of M which is at least one element selected from Al, Cu, and Zn and having an average particle size equal to or less than 300 μm and a powder containing at least 30% by weight of a fluoride of R2 which is at least one element selected from rare earth elements inclusive of Sc and Y and having an average particle size equal to or less than 100 μm, and heat treating the magnet body having the powder disposed on its surface at a temperature equal to or below the sintering temperature of the magnet body in vacuum or in an inert gas, for causing at least one of M and R2 in the powder mixture to be absorbed in the magnet body. The invention provides an R—Fe—B sintered magnet with high performance and a minimized amount of Tb or Dy used.
摘要翻译： 一种制备稀土永磁材料的方法的特征在于包括以下步骤：在R1-Fe-B组合物的烧结磁体的表面上设置粉末混合物，其中R 1是选自稀土元素中的至少一种元素，包括 Sc和Y，所述粉末混合物包含含有至少0.5重量％M的至少一种选自Al，Cu和Zn的元素并且具有等于或小于300μm的平均粒度的粉末和包含 至少30重量％的R 2的氟化物，其为选自包括Sc和Y的稀土元素中的至少一种元素，并且具有等于或小于100μm的平均粒度，并且对具有粉末的磁体进行热处理 在真空中或在惰性气体中的等于或低于磁体的烧结温度的温度下，在粉末混合物中使M和R2中的至少一个吸收在磁体中。 本发明提供一种具有高性能和最小量的Tb或Dy的R-Fe-B烧结磁体。
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公开(公告)号：US07955443B2
公开(公告)日：2011-06-07
申请号：US11783639
申请日：2007-04-11
申请人： Hajime Nakamura , Takehisa Minowa , Koichi Hirota
发明人： Hajime Nakamura , Takehisa Minowa , Koichi Hirota
IPC分类号： H01F1/057
CPC分类号： H01F41/0293 , H01F1/0577
摘要： A permanent magnet material is prepared by covering an anisotropic sintered magnet body of formula: R1x(Fe1-yCoy)100-x-z-aBzMa wherein R1 is a rare earth element, M is Al, Cu or the like, with a powder comprising an oxide of R2, a fluoride of R3 or an oxyfluoride of R4 wherein R2, R3, and R4 are rare earth elements, and having an average particle size up to 100 μm, heat treating the powder-covered magnet body in a hydrogen gas-containing atmosphere for inducing disproportionation reaction on R12Fe14B compound, and continuing heat treatment at a reduced hydrogen gas partial pressure for inducing recombination reaction to said compound, thereby finely dividing said compound phase to a crystal grain size up to 1 μm, and for effecting absorption treatment, thereby causing R2, R3 or R4 to be absorbed in the magnet body.
摘要翻译： 通过覆盖式为：R1x（Fe1-yCoy）100-xz-aBzMa的各向异性烧结磁体，其中R1是稀土元素，M是Al，Cu等，并且包含氧化物 的R2，R3的氟化物或R4的氟氧化物，其中R2，R3和R4是稀土元素，平均粒径高达100μm，在含氢气体的气氛中对粉末包覆的磁体进行热处理 用于在R12Fe14B化合物上诱导歧化反应，并且在降低的氢气分压下继续热处理以诱导与所述化合物的复合反应，从而将所述化合物相细分至1μm以上的晶粒尺寸，从而进行吸收处理 导致R2，R3或R4被吸收在磁体中。
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公开(公告)号：US07531933B2
公开(公告)日：2009-05-12
申请号：US11846690
申请日：2007-08-29
申请人： Koji Miyata , Hajime Nakamura , Koichi Hirota , Takehisa Minowa
发明人： Koji Miyata , Hajime Nakamura , Koichi Hirota , Takehisa Minowa
IPC分类号： H02K1/27
CPC分类号： H02K1/02 , H01F1/0577 , H01F41/0293 , H02K1/278 , H02K15/03 , H02K29/03
摘要： In a rotating machine comprising a rotor including a rotor core and a plurality of permanent magnet segments, and a stator including a stator core and windings, the permanent magnet segment is obtained by disposing a powder comprising an R2 oxide, R3 fluoride or R4 oxyfluoride on a sintered magnet body of R1—Fe—B composition, wherein R1 to R4 are rare earth elements, and heat treating the powder-covered magnet body. The permanent magnet segment of a cross-sectional shape which is tapered from the center toward opposed ends has a higher coercive force at the ends than at the center.
摘要翻译： 在包括转子铁心和多个永久磁铁段的转子和包括定子铁心和绕组的定子的旋转机械中，通过将包含R2氧化物，R3氟化物或R4氟氧化物的粉末设置在 R1-Fe-B组合物的烧结磁体，其中R1至R4为稀土元素，并对粉末覆盖的磁体进行热处理。 从中心向相对端逐渐变细的横截面形状的永磁体段在端部具有比中心更高的矫顽力。
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公开(公告)号：US07488393B2
公开(公告)日：2009-02-10
申请号：US11340498
申请日：2006-01-27
CPC分类号： H01F1/0577 , B22F2009/041 , B22F2009/044 , B22F2998/00 , B22F2998/10 , C22C33/0278 , C22C38/005 , C22C2202/02 , H01F1/058 , H01F41/0266 , H01F41/0293 , B22F9/04 , B22F2201/02 , B22F2202/05 , B22F9/023 , B22F3/02 , B22F3/10
摘要： A rare earth permanent magnet is in the form of a sintered magnet body having a composition R1aR2bTcAdFeOfMg wherein F and R2 are distributed such that their concentration increases on the average from the center toward the surface of the magnet body, the concentration of R2/(R1+R2) contained in grain boundaries surrounding primary phase grains of (R1,R2)2T14A tetragonal system within the sintered magnet body is on the average higher than the concentration of R2/(R1+R2) contained in the primary phase grains, and the oxyfluoride of (R1,R2) is present at grain boundaries in a grain boundary region that extends from the magnet body surface to a depth of at least 20 μm. The invention provides R—Fe—B sintered magnets which exhibit high magnet performance despite minimal amounts of Tb and Dy used.
摘要翻译： 稀土永磁体为具有组成R1aR2bTcAdFeOfMg的烧结磁体的形式，其中F和R2分布成使得它们的浓度从中心向磁体的平均值增加，R2 /（R1 包含在烧结磁体内的（R1，R2）2T14A四方晶系的主相晶粒周围的晶界中的+ R2）平均高于主晶粒中所含的R2 /（R1 + R2）的浓度， （R1，R2）的氟氧化物存在于从磁体表面延伸至至少20μm的深度的晶界区域的晶界处。 本发明提供了尽管使用最少量的Tb和Dy，其表现出高磁性能的R-Fe-B烧结磁体。
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