ELECTRICAL CHARGE/DISCHARGE STATE MONITORING SYSTEM

WIPO Patent Application WO/2011/152535

A1

The electrical charge state and discharge state of a monitoring subject are reliably and accurately monitored. An electrical charge/discharge state monitoring system is provided with: current sensors (10) attached to cylindrical bus bars (102) provided between a storage battery (40) and an inverter (60) of a regeneration system (100) and between an electric motor/electric generator (70) and the inverter (60); an ECU (20); and a monitor (30). The current sensors (10) have a current detection element (12) and a 4-pole auxiliary magnet (13), and detect a current (I) by detecting the angle formed when the direction of a combined magnetic field (M) of a magnetic field (Hip) generated by the current (I) flowing in the bus bars (102) and a magnetic field (Hs) created by the 4-pole auxiliary magnet (13) becomes a predetermined direction. The ECU (20) determines that the electrical charge/discharge state is normal when the angle of the combined magnetic field (M) is within the range of ±45º and abnormal when said angle is outside of this range, and stops operations with respect to electrical charging and discharging of the regeneration system (100) when the electrical charge/discharge state is determined to be abnormal.

KURIHARA, Takeo (1312-18, Takata Kashiwa-shi Chiba, 61, 〒2770861, JP)

JP2011/062844

December 08, 2011

June 03, 2011

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TOMEN ELECTRONICS CORPORATION (8-27, Kohnan 1-chome Minato-k, Tokyo 10, 〒1088510, JP)
株式会社トーメンエレクトロニクス (〒10 東京都港区港南１丁目８番２７号 Tokyo, 〒1088510, JP)

H02J7/00; B60L3/00; G01R15/20; H01M10/44; H01M10/48

ITAMI, Masaru et al. (Murata Bldg, Suite 4A 2-5, Kanda-Surugadai, Chiyoda-k, Tokyo 62, 〒1010062, JP)

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