Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1990-09-20
1994-04-05
Shaw, Dale M.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
307 66, 395750, 314492, G06F 126, H02J 700
Patent
active
053008740
ABSTRACT:
An intelligent power supply system for a portable computer, the computer having a central processing unit (CPU), and being operable in response to power supplied from at least two chargeable batteries or an alternating current (AC) adapter, includes means for detachably coupling the batteries to the computer and a PC-CPU for controlling power supply independent of the CPU. The PC-CPU has means for receiving battery select information for controlling power supply and generating a control signal. The power supply system further includes battery control circuit means, connected to the AC adapter and the batteries, for selecting and controlling the AC adapter or one of the batteries based on the control signal. Accordingly, the proper battery for the usage can be installed in the portable computer operable on battery power, and the computer can be operated continuously on the battery power for a long period of time.
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U.S. application Ser. No. 541,978, filed Jun. 22, 1990, inventors: Nobuyuki Nanno et al., entitled: "A Power Supply Control System for a Portable Computer".
Ishida Yasuhiro
Shimamoto Hajime
Kabushiki Kaisha Toshiba
Shaw Dale M.
Shin C.
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