VERFAHREN ZUR DETEKTION UND DETEKTOR ZUR BESTIMMUNG DES INNENWIDERSTANDES EINER WIEDERAUFLADBAREN BATTERIE UND EINES WIEDERAUFLADBAREN BATTERIEPACKS MIT EINEM SOLCHEN DETEKTOR

摘要

A detecting method for detecting internal resistance of an inspective rechargeable battery when said inspective rechargeable battery is charged by the constant current-constant voltage charging regime, said detecting method comprising at least a step (a) wherein an accumulated, charged electricity quantity of said inspective rechargeable battery in the constant voltage charging mode is obtained and a step (b) wherein said charged electricity quantity of said inspective rechargeable battery obtained in the constant voltage charging mode in said step (a) is referred to previously acquired data of a normal rechargeable battery, which corresponds to said inspective rechargeable battery, with respect to relationships of charged electricity quantities Qcv thereof versus internal resistances thereof when increased or decreased or their increased or decreased magnitudes in the constant voltage charging mode.