Method and apparatus for charging a battery
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United States of America Patent
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-
Aug 2, 1983
Grant Date -
N/A
app pub date -
Jun 5, 1981
filing date -
Jun 5, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A battery is charged by repeatedly alternating between test and charge cycles. During the test cycle, the dynamic voltage-current characteristic of the battery is obtained as a function of the charge condition of the battery. During the charge cycle, a gradually varying voltage is supplied to the battery, substantially without controlling the current supplied thereto, for a predetermined time. The rate at which this supplied voltage varies is related to the dynamic voltage-current characteristic obtained during the test cycle. Alternating between test and charge cycles continues until the dynamic voltage-current characteristic last obtained is substantially identical to the preceding dynamic voltage-current characteristic, whereupon the charging of the battery is terminated.
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