VERFAHREN ZUM MESSEN DER RESTKAPAZITÄT EINER SEKUNDÄRZELLE MIT EINER POSITIVEN PLATTE AUS NICKELHYDROXID

摘要

When determining a voltage for determination (V0) for detecting whether or not SOC at the final discharge in a secondary battery using a nickel-hydroxide positive electrode has reached a permissible lower limit, not only the voltage (V1) when the SOC reaches the lower limit at the first discharge but also the voltage after second discharge that gradually decreases due to a memory effect is taken into consideration. The voltage for determination (V0) is thus determined lower than the voltage (V1) at the first discharge, and judgement is made whether or not the SOC has reached the lower limit based on this voltage for determination (V0).