MOTOR FAULT DETECTION DEVICE FOR ELECTRIC AUTOMOBILE

WIPO Patent Application WO/2014/054454

A1

Provided is a motor fault detection device for an electric automobile that is able to detect faults in an electric motor in an electric automobile precisely, and with which costs can be reduced in comparison with the prior art. This detection device is equipped with: a steering angle detection sensor (15b) that detects the steering angle of the vehicle; a rotational angle sensor (36) that determines the rotational angle of electric motors (6); a vehicle speed sensor (9); a control map (10a), in which is set the relationship between the steering angle, the vehicle speed, and a value based on the difference between the normal rotational angles of the left/right electric motors (6, 6), which respectively drive a pair of wheels, that is, the left/right wheels (2, 2); and a fault determination means (11) that determines that there is a fault with the electric motors (6) when the difference in the rotational angles of the left/right electric motors (6, 6) as determined by the rotational angle sensor (36) deviates from a value that is based on the difference in the rotational angles obtained by referencing the control map (10a) with respect to the steering angle and the vehicle speed obtained by the steering angle detection sensor (15b) and the vehicle speed sensor (9).

JP4277884	Vehicle drive
JP5832620	Electric vehicle charging system and electric vehicle

LI GUODONG (JP)

PCT/JP2013/075653

April 10, 2014

September 24, 2013

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NTN TOYO BEARING CO LTD (JP)

B60L3/00; B60K7/00; B60L15/20

WO2009004826A1

2009-01-08

JP2012029475A	2012-02-09
JP2005168184A	2005-06-23
JP2008126752A	2008-06-05
JP2010166740A	2010-07-29
JP2006333603A	2006-12-07

SUGIMOTO, Shuji et al. (JP)
Shuji Sugimoto (JP)

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