Electricity: battery or capacitor charging or discharging – Battery or cell charging – Pulsed
Patent
1999-06-04
2000-05-09
Tso, Edward H.
Electricity: battery or capacitor charging or discharging
Battery or cell charging
Pulsed
320141, H01M 1044, H01M 1046
Patent
active
06060865&
ABSTRACT:
The present invention discloses a method for charging a battery. The method includes the steps of (a) charging the battery by a constant charging current with a first magnitude as a first pulsed charge over a first pulse-period. Then, the method is followed by charging the battery with a constant charging current with a second magnitude, substantially lower than the first magnitude, as a second pulsed charge over a second pulsed-period. The method further includes a step of (b) repeating step (a) over a first charge cycle for rapidly charging the battery to a significant percentage of full capacity. In another preferred embodiment, the method further includes a step of (c) repeating steps (a) and (b) by lowering the first magnitude and the second magnitude of the charge currents and by adjusting the first pulsed-period and the second pulsed-period for charging the battery over a second charging cycle. In yet another preferred embodiment, the method further includes a step (d) of continuously repeating steps (c) by further lowering the first magnitude and the second magnitude of the charge currents and by adjusting the first pulsed-period and the second pulsed-period for charging the battery over subsequent charging cycles to fully charge the battery.
REFERENCES:
patent: 5311113 (1994-05-01), Kojima
patent: 5367244 (1994-11-01), Rose et al.
patent: 5412306 (1995-05-01), Meadows et al.
patent: 5510693 (1996-04-01), Theobald
patent: 5646506 (1997-07-01), Suzuki
patent: 5694023 (1997-12-01), Podrazhansky et al.
Lin Bo-In
Tso Edward H.
Yuasa-Delta Technology, Inc.
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