US 7,482,782 B2
Charge control system using pulse width modulation
Chih-Min Hsu, Hsinchu (Taiwan); Dar-Cherng Su, Hsinchu (Taiwan); Albert Chen, Hsinchu (Taiwan); Cheng-Chieh Ku, Hsinchu (Taiwan); Jui-Liang Wang, Hsinchu (Taiwan); and Charles Huang, Hsinchu (Taiwan)
Assigned to Integrated Systems Solution Corp., Hsinchu (Taiwan)
Filed on Sep. 06, 2006, as Appl. No. 11/515,728.
Prior Publication US 2008/0054846 A1, Mar. 06, 2008
Int. Cl. H01M 10/46 (2006.01)
U.S. Cl. 320—107 17 Claims
OG exemplary drawing
 
1. A charge control system for a lithium battery using pulse width modulation, applied to a hand-held apparatus, comprising:
a microprocessor processing and controlling said hand-held apparatus;
a control unit electrically connected to said microprocessor and receiving a control signal which comes from said microprocessor;
a charging unit electrically connected to said control unit; and a voltage detector including an input terminal to receive an analog voltage value and an output terminal to electrically connect to said microprocessor.