Method of charging batteries and apparatus therefor

Details Method of charging batteries and apparatus therefor Method of charging batteries and apparatus therefor

H - Electricity

02

J

320/11

H02J 7/00 (2006.01)

Patent

CA 1153061

ABSTRACT A method of fast charging batteries by means of precise analysis of the profile of the variation with time of a charac- teristic of the battery which is indicative of the variation in stored chemical energy as the battery is charged. The meth- od specifically comprises analyzing the profile for the occur- rence of a particular series of events preferably including one or more inflection points which precisely identify the point in time at which the application of a fast charge rate should be discontinued. Additional methods of analysis provide for termi- nation or control of the charging current upon the occurrence of other events such as limiting values on time, voltage or voltage slope or a negative change in the level of stored energy. Apparatus for performing these methods comprises a suitable power supply and a microcomputer for analyzing the profile and controlling the power supply.

328538

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