Lead-acid starter battery diagnosing method for motor vehicle, involves determining value representing state of health of battery with help of measured temperature and parameters values for state of charge so as to diagnose battery

摘要

#CMT# #/CMT# 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. #CMT# : #/CMT# An independent claim is also included for a system for diagnosing a lead-acid starter battery of a motor vehicle. #CMT#USE : #/CMT# Method for diagnosing a lead-acid starter battery equipped in a motor vehicle during a starting phase of the battery. #CMT#ADVANTAGE : #/CMT# The method diagnoses the lead-acid starter battery which is equipped in the motor vehicle in simple and inexpensive manner. The method provides the information such as starting trouble, or difficult starting or impossible starting of the battery, thus allowing loading or changing of the battery having problems, and hence warning the failure of the battery to the user of the vehicle in order to immobilization of the vehicle. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of a lead-acid starter battery diagnosing system. 1 : Lead-acid starter battery diagnosing system 2 : Lead acid battery 3, 4 : Positive and negative battery terminals 8 : Case 10 : Sensor.