Battery charger

Details Battery charger Battery charger

1992-10-07

1997-01-07

Tso, Edward H.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

H01M 1044, H01M 1046

Patent

active

055920691

ABSTRACT:
A battery charger with charging parameter values derived from communication with a battery pack to be charged. Communication is over a one-wire bus with battery pack transmissions in response to charger inquiries. The battery charger may be in the form an integrated circuit driving a power transistor or other controllable DC supply. A battery pack may contain a program with multiple charging currents and charging interval termination methods such as time, temperature rise, and incremental voltage polarity. A lack of communication may be invoke a default charging program or denial of access to the charger. The charger also communicates over a high-speed three-wire bus with an external computer for analysis of identification information acquired from the battery and for control of the charger.

REFERENCES:
patent: 4370606 (1983-01-01), Kakumoto et al.
patent: 4385269 (1983-05-01), Aspinwall et al.
patent: 4746852 (1988-05-01), Martin
patent: 4806840 (1989-02-01), Alexander et al.
patent: 4965738 (1990-10-01), Bauer et al.
patent: 5164652 (1992-11-01), Johnson et al.

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