Invention Grant
- Patent Title: Current sensor
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Application No.: US17834061Application Date: 2022-06-07
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Publication No.: US11846656B2Publication Date: 2023-12-19
- Inventor: Tomohiro Nezuka , Yoshikazu Furuta , Shotaro Wada
- Applicant: DENSO CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA , MIRISE Technologies Corporation
- Applicant Address: JP Kariya
- Assignee: DENSO CORPORATION,TOYOTA IDOSHA KABUSHIKI KAISHA,MIRISE Technologies Corporation
- Current Assignee: DENSO CORPORATION,TOYOTA IDOSHA KABUSHIKI KAISHA,MIRISE Technologies Corporation
- Current Assignee Address: JP Kariya; JP Toyota; JP Nisshin
- Agency: POSZ LAW GROUP, PLC
- Priority: JP 21132749 2021.08.17
- Main IPC: G01R15/14
- IPC: G01R15/14 ; G01R19/252

Abstract:
A current sensor for detecting a current based on a terminal voltage and a resistance value of a shunt resistor, includes: a resistance value correction circuit having: correction resistors; a signal application unit; a voltage detection unit that detects terminal voltages of the shunt resistor and a part of the correction resistors in a first period, and terminal voltages of all of the correction resistors in a second period; and a correction unit that corrects the resistance value for current detection based on a calculated resistance value of the shunt resistor. Resistance values and resistance accuracies of the correction resistors are higher as the plurality of correction resistors are disposed farther from the shunt resistor.
Public/Granted literature
- US20230059928A1 CURRENT SENSOR Public/Granted day:2023-02-23
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