| 摘要 |
<p>A technique of operating a lithium-ion (Li-ion) battery is proposed for maximizing battery life. In one aspect, this technique calls for charging the battery at a lower temperature than the temperature at which discharge begins. Preferably, the battery is charged at a temperature T1 in the range between about +5°C and -20°C; and discharged at a temperature T2, in the range of about +5°C to +30°C, T2 being higher than T1. In another aspect, the battery is charged to an elevated state of charge which is above an initial state of charge at a temperature T1 between about +5°C and -20°C which is lower than a temperature T2, in the range of about +5°C to +30°C, at which discharge begins. In a further aspect, after the battery has been charged and discharged during the eclipse season, it is then charged to an intermediate charge level between about 40% and about 60% state of charge over a relatively long lapsed duration of time, about one month to about six months, and thereafter, the battery is maintained at this intermediate charge level.</p> |
