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:
Jun. 25, 2019
Filed:
Jan. 07, 2016
Hitachi Metals, Ltd., Tokyo, JP;
Naoki Futakuchi, Tokyo, JP;
Katsuya Akimoto, Tokyo, JP;
HITACHI METALS, LTD., Tokyo, JP;
Abstract
A current detection device includes plural bus bars, plural magnetic detection elements that are arranged respectively corresponding to the bus bars, a magnetic shield arranged to surround parts of the bus bars and the magnetic detection elements, a correction factor calculation unit that, on the basis of voltages output from the magnetic detection elements when any two or more of the bus bars are supplied with inversely phased currents, calculates correction factors for correcting mutual interference between the magnetic detection elements, a recording medium that holds the correction factors calculated by the correction factor calculation unit, and a current calculation unit that, using the correction factors held in the recording medium, calculates the currents flowing through the bus bars on the basis of the voltages output from the magnetic detection elements.