Title:
ELECTRIC VEHICLE ABNORMALITY DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/093381
Kind Code:
A1
Abstract:
Provided is an electric vehicle abnormality detection device capable of quickly detecting the occurrence of an abnormality in a motor-and-reduction-gear unit in which a motor and reduction gear are integrally provided and simply specifying the location of the occurrence of the abnormality. This abnormality detection device (50) is for an electric vehicle provided with a motor-and-reduction-gear unit (Gu) having a motor (1) for driving wheels and a reduction gear (2) that is provided integrally with the motor (1), decelerates the rotation of the motor (1), and transmits the same to the wheels. The motor-and-reduction-gear unit (Gu) is provided with a vibration sensor (Sa). An abnormality detection means (48) is provided that detects that an abnormality has occurred in the motor-and-reduction-gear unit (Gu) and whether the location of the occurrence of the abnormality is the motor (1) or the reduction gear (2) when a detected value in a specified frequency range in the vibration information measured by the vibration sensor (Sa) exceeds a prescribed threshold.
Inventors:
OKADA KOICHI (JP)
SUZUKI KENICHI (JP)
SUZUKI KENICHI (JP)
Application Number:
PCT/JP2014/082782
Publication Date:
June 25, 2015
Filing Date:
December 11, 2014
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
OKADA KOICHI (JP)
SUZUKI KENICHI (JP)
OKADA KOICHI (JP)
SUZUKI KENICHI (JP)
International Classes:
B60L3/00; B60K7/00; F16H1/32
Domestic Patent References:
| WO2012026204A1 | 2012-03-01 |
Foreign References:
| JP2006067669A | 2006-03-09 | |||
| JPH11311591A | 1999-11-09 | |||
| JP2013076602A | 2013-04-25 |
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
Shuji Sugimoto (JP)
Shuji Sugimoto (JP)
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