| 摘要 |
Provided is a charging method of a secondary battery capable of reducing the irreversible quantity in initial charge and discharge cycles after production of the battery and improving charge and discharge cycle characteristics. The secondary battery is at least comprised of an anode, a cathode, and an electrolyte and has a curve of anode potential or cathode potential against storage quantity, or an open-circuit voltage curve of battery against storage quantity. With inflection points. In carrying out a charging operation of the secondary battery in a predetermined waveform, before arrival at the charging quantity on the inflection point, at least until at least at the charging quantity on the inflection point, the charging current and/or charging voltage is charged during the charging. After passing the inflection point, until full charging state, the charging is performed in a different pattern from that before the inflection point. <IMAGE> |
