The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 08, 2012
Filed:
Jun. 25, 2009
Tomoaki Ozawa, Nagoya, JP;
Takahiro Tsuchiya, Anjo, JP;
Yo Kawakami, Kariya, JP;
Masayuki Arai, Toyota, JP;
Tomoaki Ozawa, Nagoya, JP;
Takahiro Tsuchiya, Anjo, JP;
Yo Kawakami, Kariya, JP;
Masayuki Arai, Toyota, JP;
Aisin Seiki Kabushiki Kaisha, Aichi-ken, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
A motor control device includes a motor, a control portion controlling the motor, estimating a heating temperature of the motor on the basis of an electric current value and an energizing time period or a stopping time period of the motor, and restricting an electrification of the motor in a case where the estimated heating temperature becomes equal to or greater than a limit value, and a temperature sensing device for detecting a temperature of a predetermined portion of a vehicle, wherein the control portion estimates an initial temperature of the motor when an engine is started on the basis of a temperature signal outputted from the temperature sensing device and determines the limit value on the basis of the estimated initial temperature.