DETECTION CIRCUIT FOR OPEN OR INTERMITTENT MOTOR VEHICLE BATTERY CONNECTION

摘要

A motor vehicle electrical power system provides monitoring of the connection between a vehicle battery and a direct current power source for charging the battery. A voltage transient detector determines if voltage levels on the connection between the vehicle battery and the direct current power supply exceed a minimum threshold. Additionally, a timer or low pass filter passes only voltage transients of a minimum duration. Responsive to detection of a voltage transient exceeding the minimum threshold and duration a load dump event is signaled indicating a possible transient interruption of the connection between the vehicle battery and the direct current power source has occurred.