Method and system for charging rechargeable batteries

Details Method and system for charging rechargeable batteries Method and system for charging rechargeable batteries

1998-12-16

1999-09-07

Berhane, Adolf Deneke

Electricity: battery or capacitor charging or discharging

Means to identify cell or battery type

363144, H02J 7200

Patent

active

059492139

ABSTRACT:
A system and method for charging rechargeable batteries is disclosed. A charging circuit monitors aspects of a rechargeable battery during charging and applies power to the terminals of the battery received from a power supply. The charging circuitry signals to a power supply to control the current or voltage applied to the charging circuitry based upon the monitored aspects of the battery and the type of charge storing compound within the cells of the battery. The charging circuitry and battery may be part of a rechargeable battery cartridge disposed within a compartment of a portable electronic device having a dynamic operational load. By controlling the power supply, the charging circuitry can simultaneously apply power to the operational load to operate the device while charging the battery.

REFERENCES:
patent: 4912392 (1990-03-01), Faulkner
patent: 5672951 (1997-09-01), Shiota
patent: 5739672 (1998-04-01), Lane
patent: 5739673 (1998-04-01), Le Van Suu
patent: 5773961 (1998-06-01), Cameron et al.
patent: 5861732 (1999-01-01), Takimoto et al.
Data Sheet for Benchmarq Model bq2002C, Fast-Charge IC, Sep., 1997, 8 pages.
Data Sheet for Benchmarq Model bq2954, Lithium Ion Fast-Charge IC, Nov., 1997, 14 pages.

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