Battery charger
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United States of America Patent
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N/A
Issued Date -
N/A
app pub date -
Oct 9, 2001
filing date -
Oct 7, 1992
priority date (Note) -
Abandoned
status (Latency Note)
Importance
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.
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