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1. (WO2013147287) INSULATION STATE DETECTING DEVICE

Pub. No.:    WO/2013/147287    International Application No.:    PCT/JP2013/059793
Publication Date: Fri Oct 04 01:59:59 CEST 2013 International Filing Date: Tue Mar 26 00:59:59 CET 2013
IPC: B60L 3/00
G01R 31/02
Applicants: YAZAKI CORPORATION
HONDA MOTOR CO., LTD.
Inventors: KAWAMURA, Yoshihiro
MATSUMOTO, Mitsunori
Title: INSULATION STATE DETECTING DEVICE
Abstract:
An insulation state detecting device includes a positive side input terminal connected to a positive side power line of a high voltage DC power supply, a negative side input terminal connected to a negative side power line of the high voltage DC power supply, a ground electrode, a controller that detects insulation states between the positive side power line and the negative side power line and the ground electrode based on a charge voltage of a flying capacitor, and an equilibrium state forming circuit that promotes an operation of transiting a charge state of a positive side electrostatic capacitance between the positive side power line and the ground electrode and a charge state of a negative side electrostatic capacitance between the negative side power line and the ground electrode from non-equilibrium states to equilibrium states.