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:
Apr. 17, 2018
Filed:
Jul. 03, 2015
Sanyo Electric Co., Ltd., Osaka, JP;
Masaki Yugou, Hyogo, JP;
Kimihiko Furukawa, Hyogo, JP;
SANYO ELECTRIC CO., LTD., Osaka, JP;
Abstract
An electrical current detection device is provided with a shunt resistor that includes a first conducting part, a second conducting part, a center conducting part disposed between the first conducting part and the second conducting part, a first resistor disposed between the first conducting part and the center conducting part, and a second resistor disposed between the second conducting part and the center conducting part, the second resistor having a greater resistance value than the first resistor. The electrical current detection device is further provided with: a signal output unit; an estimation unit that estimates a first estimated current value from the first detection signal, and estimates a second estimated current value from the second detection signal; and an determination unit that compares the first estimated current value and the second estimated current value, and determines the abnormality of the shunt resistor.