METHOD AND DEVICE FOR DETECTING STORAGE CAPACITY OF SECONDARY CELL, AND THE CHARGER OF SECONDARY CELL

摘要

PROBLEM TO BE SOLVED: To provide a method and a device for detecting the storage capacity of a secondary cell which enable calculation of the storage capacity of the secondary cell in a short time at any time, not only at charging, and also at checking of a state of deterioration of the secondary cell from the storage capacity, and to provide a charger. SOLUTION: An external voltage Va, equal to or larger than an electromotive force E, is impressed on the secondary cell 10, and a cell terminal voltage VONat impression and a current JONthen are measured, respectively. The external voltage Vabeing cut off, an open-circuit cell terminal voltage VOFFof the secondary cell 10 is measured and the storage capacity Q of the secondary cell is determined by using the cell terminal voltage VON, the above current JONand the open-circuit cell terminal voltage VOFF. COPYRIGHT: (C)2009,JPO&INPIT