Charging control method for lithium battery
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United States of America Patent
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Issued Date -
May 1, 2008
app pub date -
Jan 5, 2007
filing date -
Oct 27, 2006
priority date (Note) -
Abandoned
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Abstract
A charging control method of lithium battery is provided. At the beginning, a voltage detect circuit detects the current voltage of the battery and the microprocessor decides a proper charging stage, and then modulates a power as an appropriate constant current or an appropriate constant voltage by the pulse width modulation (PWM) function of the microprocessor to charge the battery. Next, repeatedly detects the voltage, decides the charging stage, charges the battery, compares the voltage of the battery with the default voltage . . . and so on until the charging process is completed.
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