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:
Dec. 11, 2018
Filed:
Jan. 14, 2015
Mazda Motor Corporation, Hiroshima, JP;
Takuo Hirano, Higashihiroshima, JP;
Takahiko Miura, Hatsukaichi, JP;
MAZDA MOTOR CORPORATION, Hiroshima, JP;
Abstract
In a vehicular air conditioning device, a heater core is disposed on a circulation passage for cooling water for cooling a motor, and an inverter configured to control an output of the motor by changing a carrier frequency, and heats conditioning air. An air conditioning controller sets a required calorific value of the motor and the inverter according to a vehicle compartment temperature requested by a passenger. A carrier frequency changing unit sets a carrier frequency at which a calorific value of the motor and the inverter is made equal to the required calorific value, out of carrier frequencies capable of implementing a target output of the motor to be set depending on a traveling state of a vehicle. An electric power conversion device converts direct-current power of a battery into alternating-current power at the set carrier frequency, and supplies the alternating-current power to the motor.