| abstract |
In the method of charging a secondary battery, the first n I -ΔI (after carrying out a constant current charging up to the predetermined voltage V 0, the first subjected to constant-voltage charge for a given voltage V 0, the charge current from the n I n ), the first constant voltage charging is completed, n is increased by 1, and then constant voltage charging is performed at voltage V n =V n -1 +ΔV n , and the charging current is from I n to ( When I n -ΔI n ), the process of completing the n-th constant voltage charging is increased by 1 and is repeated, so that the value of the voltage V n reaches the second predetermined voltage V N (>V 0 ). The reached N-th constant voltage charging is completed, and the constant voltage charging is ended. |