초록 ▼

A system for charging dual battery packs. The system includes a charger for supplying current to charge a first battery pack when the first battery pack is electrically coupled to the computer system. The charger supplies current to charge a second battery pack when the second battery pack is electr

A system for charging dual battery packs. The system includes a charger for supplying current to charge a first battery pack when the first battery pack is electrically coupled to the computer system. The charger supplies current to charge a second battery pack when the second battery pack is electrically coupled to the computer system. The system also includes a charge controller, such as a keyboard controller executing a program stored in a memory, for controlling the charging of the first battery pack and the second battery pack such that the charger charges the first battery pack to a first level, the charger charges the second battery pack to a second level, and the charger simultaneously charges the first battery pack and the second battery pack when the first battery pack is charged above the first level and below a third level and the second battery pack is charged above the second level and below a fourth level. Each battery pack includes a processor, an associated memory, back to back FETs, and lithium ion cells.

대표청구항 ▼

[ What is claimed is:] [1.] A computer system comprising:a processor;a memory electrically coupled to the processor;a charger for supplying current to charge a first battery pack when the first battery pack is electrically coupled to the computer system, the charger for supplying current to charge a

[ What is claimed is:] [1.] A computer system comprising:a processor;a memory electrically coupled to the processor;a charger for supplying current to charge a first battery pack when the first battery pack is electrically coupled to the computer system, the charger for supplying current to charge a second battery pack when the second battery pack is electrically coupled to the computer system;a charge controller for controlling the charging of the first battery pack and the second battery pack such that the charger charges the first battery pack to a first level, the charger charges the second battery pack to a second level, and the charger simultaneously charges the first battery pack and the second battery pack when the first battery pack is charged above the first level and below a third level and the second battery pack is charged above the second level and below a fourth level;wherein the charger supplies current to the first battery pack via a first switch to charge the first battery pack, the charge controller making conductive the first switch to charge the first battery pack;wherein the charger supplies current to the second battery pack via a second switch to charge the second battery pack the charge controller making conductive the second switch to charge the second battery pack;wherein the charge controller makes a third switch and a fourth switch non conductive when the charger is simultaneously charging the first battery pack and the second battery pack, the computer system capable of being powered by current supplied via the third switch from the first batter pack, the computer system capable of being powered by current supplied via the fourth switch from the second battery pack.