PROBLEM TO BE SOLVED: To provide an electric leakage detector with which it is possible to detect the presence of electric leakage in a battery unit including a battery power supply and its periphery, and to accurately and quickly detect a leakage portion when electric leakage exists.SOLUTION: The electric leakage detector comprises insulation resistance detection means, electric leakage determination means, battery voltage measurement means, potential difference measurement means, and leakage portion determination means. The insulation resistance detection means detects the resistance value of insulation resistance between a battery unit including a battery power supply and its periphery and the ground of a vehicle. The electric leakage determination means determines the presence of electric leakage in the battery unit in accordance with the detection result of the insulation resistance detection means. The battery voltage measurement means measures a battery voltage that is a sum total of a plurality of battery cells. The potential difference measurement means measures a potential difference between the battery unit and ground when the determination result of the electric leakage determination means is that electric leakage exists. The leakage portion determination means determines a leakage portion on the basis of the measurement result of the battery voltage measurement means when a potential difference is measured by the potential difference measurement means and the potential difference measured by the potential difference measurement means.SELECTED DRAWING: Figure 1
【課題】バッテリ電源およびその周辺部を含むバッテリ部の漏電の有無を検出できるとともに、漏電ありの場合はその漏電部位がどこであるかについても的確かつ迅速に検出できる漏電検出装置を提供する。【解決手段】漏電検出装置は、絶縁抵抗検出手段、漏電判定手段、バッテリ電圧測定手段、電位差測定手段、漏電部位判別手段を備える。絶縁抵抗検出手段は、バッテリ電源およびその周辺部を含むバッテリ部と車両のアースとの間の絶縁抵抗の抵抗値を検出する。漏電判定手段は、バッテリ部における漏電の有無を絶縁抵抗検出手段の検出結果に応じて判定する。バッテリ電圧測定手段は、複数の電池セルの合計値であるバッテリ電圧を測定する。電位差測定手段は、漏電判定手段の判定結果が漏電ありの場合に、バッテリ部とアースとの間の電位差を測定する。漏電部位判別手段は、電位差測定手段が前記電位差を測定したときのバッテリ電圧測定手段の測定結果と電位差測定手段が測定した電位差に基づき漏電部位を判別する。【選択図】図1
ELECTRIC LEAKAGE DETECTOR
漏電検出装置
2018-03-29
Patent
Electronic Resource
Japanese
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