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Title:
COOLING CONTROL DEVICE AND COOLING CONTROL METHOD FOR ELECTRIC-VEHICLE MOTOR
Document Type and Number:
WIPO Patent Application WO/2014/167690
Kind Code:
A1
Abstract:
A cooling control device and cooling control method for an electric-vehicle motor whereby damage to said motor can be reduced without making the user feel as though something is wrong are obtained. A vehicle control unit has the following: a vehicle-stop determination unit that determines whether or not the vehicle is stopped; a clutch control unit that disengages a clutch if it is determined that the vehicle is stopped; a motor control unit that, after the clutch has been disengaged, runs the motor so as to run an oil circulation unit; and a motor-magnet-temperature estimation unit that detects an induced voltage resulting from the motor being run and estimates the temperature of a magnet in the motor from the detected motor-induced voltage. If the estimated motor-magnet temperature is higher than a predetermined temperature threshold above which motor cooling is required, the motor control unit keeps the motor running, but if the motor-magnet temperature is less than or equal to said temperature threshold, the motor control unit stops the motor.

Inventors:
MORI NOBUHIDE (JP)
ENOKI KEIICHI (JP)
KOBAYASHI HIROYUKI (JP)
OGAWA YASUFUMI (JP)
NAKANO KOTARO (JP)
Application Number:
PCT/JP2013/060950
Publication Date:
October 16, 2014
Filing Date:
April 11, 2013
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P29/00; B60L3/00
Foreign References:
JP2011083048A2011-04-21
JP2005127406A2005-05-19
JP2005218271A2005-08-11
JP2001157304A2001-06-08
JP2008206339A2008-09-04
JP2002199776A2002-07-12
Attorney, Agent or Firm:
SOGA, Michiharu et al. (JP)
Michiharu Soga (JP)
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