Patent ID: 6979978
Filing Date: 2005-12-27
Classification: H01M,H02J,Y02E

Abstract:
1. A battery pack comprising: a rechargeable secondary cell; a charge control device for controlling charging of the secondary cell by monitoring a charge state thereof; feed terminals connected to a direct-current electric power supply; and a switch device for opening and closing a path by way of which electric power is fed from the feed terminals to the secondary battery, wherein the charge control device comprises a full charge detection circuit for checking whether the secondary cell is in a fully charged state or not based on a charge voltage and/or a charge current of the secondary cell, a control circuit for controlling driving of the switch device according to an output of the full charge detection circuit, a storage circuit for storing control information, and a setting circuit for setting a level of the charge voltage and/or the charge current at which the full charge detection circuit recognizes the fully charged state according to the control information read from the storage circuit, the control information being fed into the storage circuit from outside of the charge control device.