Method of rapidly charging a lithium ion cell

Details Method of rapidly charging a lithium ion cell Method of rapidly charging a lithium ion cell

1993-12-27

1996-01-02

Stephan, Steven L.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 21, H02J 710

Patent

active

054811740

ABSTRACT:
A battery charger for lithium ion cells closely monitors cell voltage, and charge time, so as to avoid the over-application of charge to the cell. Charge pulses (104) are followed by a first rest (110), a discharge (112) and a second rest, (120) period prior to re-initiating the charge pulse. If the battery voltage reaches a preselected maximum, in less than a pre-selected period of time, the charge pulse is reduced by a preselected minimum factor. Cycling of the cell is continued until the cells are fully charged.

REFERENCES:
patent: 3895283 (1975-08-01), Peterson
patent: 4354148 (1982-10-01), Tada et al.
patent: 4385269 (1983-05-01), Aspinwall et al.
patent: 4467265 (1984-08-01), Hierholzer
patent: 4736150 (1988-04-01), Wagner
patent: 4742289 (1988-05-01), Wahlstrom
patent: 4746852 (1988-05-01), Martin
patent: 5130634 (1992-07-01), Kasai
patent: 5307000 (1994-04-01), Podrazhansky et al.

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