VERFAHREN ZUR DIAGNOSTIZIERUNG DER BLEIBATTERIE EINES AUTOMOBILS UND SYSTEM ZUR DURCHFÜHRUNG DIESES VERFAHRENS

摘要

The method involves forming a parameter of a state of health (SOH) of a lead acid battery (2) for different values of a state of charge (SOC) of the battery in an experimental phase corresponding to an operating phase of the battery. Temperature and characteristics e.g. current, of the battery are measured in a diagnosing phase corresponding to the operating phase to deduce a parameter value of the battery. A value representing the SOH is determined with help of the measured temperature and parameters values deduced from measurements for the state of charge so as to diagnose the battery. An independent claim is also included for a system for diagnosing a lead-acid starter battery of a motor vehicle.