A novel microprocessor-based battery charger circuit with power factor correction

An effective microcontrolled battery charger circuit that monitors the charging process avoiding the battery damage by overcharge is described, where a PWM forward topology with power factor correction is employed in order to provide DC/DC conversion. Depending on the battery charge state, which is determined by microcontroller PIC 16F873, the charging process is modified. In this way, fast charging does not have negative effects on the effective capacity of the battery and on battery cycle-life.

[1]  C.A. Gallo,et al.  Soft-switched PWM high-frequency with PFC converter using boost-flyback converter interleaved , 2002, 24th Annual International Telecommunications Energy Conference.

[2]  I. Damlund.  Analysis and interpretation of AC-measurements on batteries used to assess state-of-health and capacity-condition , 1995, Proceedings of INTELEC 95. 17th International Telecommunications Energy Conference.

[3]  Leopoldo Rossetto.  Control techniques for power factor correction converters , 1994 .

[4]  L. H. Dixon,et al.  Average current mode control of switching power supplies , 1990 .

[5]  M. H. Pong,et al.  A constant power battery charger circuit with inherent soft switching and PFC , 2000, APEC 2000. Fifteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.00CH37058).