H - Electricity – 02 – J
Patent
H - Electricity
02
J
H02J 15/00 (2006.01) H02J 7/00 (2006.01)
Patent
CA 2284966
A technique of operating a lithium-ion (Li-ion) battery is proposed for maximizing battery life. In a first instance, 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 instance proposed by the invention, 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 still another instance proposed by the invention, 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.
Chang Rebecca R.
Lenhart Stephen J.
Chang Rebecca R.
Lenhart Stephen J.
Sim & Mcburney
Space Systems/loral Inc.
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