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Title: Method for mitigating thermal aging of permanent magnets in organic liquid

Abstract

An electric motor is provided for use in an electromechanical transmission that utilizes automatic transmission fluid. The electric motor includes a stator and a rotor. The rotor includes a plurality of permanent magnets can include magnetic particles coated with hydrogen impermeable material. According to an alternative embodiment, the entire permanent magnet or the rotor itself can be coated with hydrogen impermeable material. According to a further alternative embodiment, the permanent magnet particles can be secured by a binder that includes a hydrogen storage compound that prevents hydrogen from affecting magnetic properties of the permanent magnet.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
GM Global Technology Operations LLC, Detroit, MI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1531375
Patent Number(s):
10141795
Application Number:
15/064,211
Assignee:
GM Global Technology Operations LLC (Detroit, MI)
Patent Classifications (CPCs):
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01F - MAGNETS
H - ELECTRICITY H02 - GENERATION H02K - DYNAMO-ELECTRIC MACHINES
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016-03-08
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Thompson, Margarita P., Pinkerton, Frederick E., Balogh, Michael P., Dadheech, Gayatri Vyas, and Zeng, Xiaoqing. Method for mitigating thermal aging of permanent magnets in organic liquid. United States: N. p., 2018. Web.
Thompson, Margarita P., Pinkerton, Frederick E., Balogh, Michael P., Dadheech, Gayatri Vyas, & Zeng, Xiaoqing. Method for mitigating thermal aging of permanent magnets in organic liquid. United States.
Thompson, Margarita P., Pinkerton, Frederick E., Balogh, Michael P., Dadheech, Gayatri Vyas, and Zeng, Xiaoqing. Tue . "Method for mitigating thermal aging of permanent magnets in organic liquid". United States. https://www.osti.gov/servlets/purl/1531375.
@article{osti_1531375,
title = {Method for mitigating thermal aging of permanent magnets in organic liquid},
author = {Thompson, Margarita P. and Pinkerton, Frederick E. and Balogh, Michael P. and Dadheech, Gayatri Vyas and Zeng, Xiaoqing},
abstractNote = {An electric motor is provided for use in an electromechanical transmission that utilizes automatic transmission fluid. The electric motor includes a stator and a rotor. The rotor includes a plurality of permanent magnets can include magnetic particles coated with hydrogen impermeable material. According to an alternative embodiment, the entire permanent magnet or the rotor itself can be coated with hydrogen impermeable material. According to a further alternative embodiment, the permanent magnet particles can be secured by a binder that includes a hydrogen storage compound that prevents hydrogen from affecting magnetic properties of the permanent magnet.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {11}
}

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Works referenced in this record:

Magnetic core coated with tin free electrodeposition coatings
patent, August 1997


Magnet and a motor component having a coating with anticorrosion and insulation
patent, February 2000


Method of forming film on electronic part metal surface having burrs
patent, September 1995


Oscillating linear compressor
patent, September 2015