DISCONNECTION DETECTION DEVICE AND DISCONNECTION DETECTION METHOD

• Main Authors: KOMIYA MOTOKI, KUME MASAYOSHI, IWAI KENTA, MIYAMOTO MASAKI
• Format: Patent
• Language: English; Japanese
• Published: 03.04.2023
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERATION; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; SYSTEMS FOR STORING ELECTRIC ENERGY; TESTING

To detect a disconnection in a capacitor of a π-type filter.SOLUTION: A disconnection detection device has a filter circuit and a comparator circuit. The filter circuit includes a first capacitor and suppresses noise in a voltage supplied from a battery to a primary power supply of a vehicle. The comparator circuit detects voltage fluctuations occurring at a node between the filter circuit and the primary power supply in accordance with a voltage pulse applied to a second capacitor connected to a portion between the filter circuit and the primary power supply.SELECTED DRAWING: Figure 1 【課題】π型フィルタのコンデンサの断線を検知すること。【解決手段】実施形態に係る断線検知装置は、フィルタ回路と、コンパレータ回路と、を有する。フィルタ回路は、第１のコンデンサを備え、バッテリから車両の１次電源に供給される電圧のノイズを抑制する。コンパレータ回路は、フィルタ回路と１次電源との間に接続された第２のコンデンサに印加された電圧パルスに応じて、フィルタ回路と１次電源との間のノードに生じた電圧変動を検出する。【選択図】図１