Current sensor

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United States of America Patent

PATENT NO 11815531
APP PUB NO 20230054772A1
SERIAL NO

17875677

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Abstract

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A current sensor of a detection target current using a shunt resistor includes: a resistance value correction circuit having: a correction resistor; a signal application unit that applies an alternating current signal to a series circuit of the shunt resistor and the correction resistor; a first voltage detection unit that detects the terminal voltage of the shunt resistor; a second voltage detection unit that detects a terminal voltage of the correction resistor; and a correction unit that calculates the resistance value of the shunt resistor based on a first voltage detection value by the first voltage detection unit and a second voltage detection value by the second voltage detection unit, and corrects the resistance value for current detection based on a calculated resistance value of the shunt resistor.

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Patent Owner(s)

Patent OwnerAddress
TOYOTA JIDOSHA KABUSHIKI KAISHA1 TOYOTA-CHO TOYOTA-SHI AICHI-KEN 471-8571
DENSO CORPORATION1-1 SHOWA-CHO KARIYA-CITY AICHI-PREF 448-8661
MIRISE TECHNOLOGIES CORPORATION500-1 MINAMIYAMA KOMENOKI-CHO NISSHIN-SHI AICHI-KEN 470-0111

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Furuta, Yoshikazu Nisshin, JP 32 42
Nezuka, Tomohiro Nisshin, JP 49 81
Wada, Shotaro Nisshin, JP 11 1

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