Battery charger

Details Battery charger Battery charger

1997-07-28

1999-02-02

Tso, Edward H.

Electricity: battery or capacitor charging or discharging

Means to identify cell or battery type

320110, H01M 1046

Patent

active

058670068

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: 4289836 (1981-09-01), Lemelson
patent: 4387334 (1983-06-01), Loper
patent: 5206097 (1993-04-01), Burns et al.
patent: 5254928 (1993-10-01), Young et al.
patent: 5284719 (1994-02-01), Landau et al.
patent: 5357203 (1994-10-01), Landau et al.
patent: 5440221 (1995-08-01), Landau et al.
patent: 5600247 (1997-02-01), Matthews
patent: 5694024 (1997-12-01), Dias et al.

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