发明名称 |
Rotor permanent magnet apparatus for drive motor based on temperature distribution |
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. |
申请公布号 |
US9385563(B2) |
申请公布日期 |
2016.07.05 |
申请号 |
US201313851369 |
申请日期 |
2013.03.27 |
申请人 |
Hyundai Motor Company |
发明人 |
Kim Kyoung Bum;Moon Sang Hoon;Cho Hyoung Jun;Kim Jung Shik |
分类号 |
H02K1/02;H01F41/02 |
主分类号 |
H02K1/02 |
代理机构 |
Mintz Levin Cohn Ferris Glovsky and Popeo, P.C. |
代理人 |
Mintz Levin Cohn Ferris Glovsky and Popeo, P.C. ;Corless Peter F. |
主权项 |
1. A rotor permanent magnet apparatus within a drive motor, the apparatus comprising:
a permanent magnet mounted within a rotor of the drive motor; and a material, formed on the surface of the permanent magnet that enhances coercivity of the permanent magnet, wherein a predetermined amount of the material is diffused on a portion of the permanent magnet, to prevent demagnetization, wherein the amount of the material is gradually increased as the portion of the permanent magnet approaches a central portion of the permanent magnet from both ends of the permanent magnet. |
地址 |
Seoul KR |