CHARGE CONTROL DEVICE FOR LITHIUM ION BATTERY PACK, AND LITHIUM ION BATTERY PACK SYSTEM

摘要

PPROBLEM TO BE SOLVED: To miniaturize a balance circuit to lower the voltage of an individual lithium ion secondary battery. PSOLUTION: A charge control device for a lithium ion battery pack includes a balance circuit 3 provided in each lithium ion cell 2 to lower a voltage by individually discharging the lithium ion cell 2, a suppression resistor 54 provided in a charging circuit for supplying power to the lithium ion battery pack 20 to suppress a charging current to the lithium ion battery pack 20, and discharges the lithium ion cell 2 by a corresponding balance circuit 3 with the charging current to the lithium ion battery pack 20 lowered by operating the suppression resistor 54. PCOPYRIGHT: (C)2011,JPO&INPIT