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:
Oct. 13, 2026
Filed:
May. 15, 2024
Mazda Motor Corporation, Aki-gun, JP;
Genri Suzuki, Aki-gun, JP;
Abstract
A device is attached to an inverter installed with a power device, and estimates a temperature of the power device on the basis of a temperature of a freewheel diode. The device includes a voltage divider section having a voltage divider circuit that includes a first element and a second element connected in series, a diode voltage detection section detecting a forward voltage of the freewheel diode on the basis of a divided voltage of the second element, a diode current detection section detecting a forward current of the freewheel diode, and a diode temperature estimation section estimating the temperature of the freewheel diode on the basis of the detected forward voltage, the detected forward current, and characteristic data. The first element is a diode arranged in forward parallel with the freewheel diode, and the second element is a resistor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile