Method for charging lithium batteries with power dissipation...

Details Method for charging lithium batteries with power dissipation... Method for charging lithium batteries with power dissipation...

2009-06-02

2011-12-27

Aurora, Reena (Department: 2858)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

Regulated discharging

C320S162000, C320S164000

Reexamination Certificate

active

08084999

ABSTRACT:
Herein described are at least methods and systems to control power dissipation while charging a device. In a representative embodiment, the method comprises first monitoring a first voltage output by a charger used for said charging a battery of a device, second monitoring a second voltage at the battery, first determining a first current based on a power dissipation value associated with the device, the first voltage, and the second voltage, second determining a minimum of the first current and a second current, wherein the second current equals the maximum charging current during a typical charge cycle of the device, and applying a control signal to a control circuit to generate the minimum, wherein the control circuit is communicatively coupled to the charger at a first port, and the battery at a second port. An exemplary system comprises one or more circuits operable for, at least performing the aforementioned method.

REFERENCES:
patent: 4897591 (1990-01-01), Spani
patent: 6850040 (2005-02-01), Xiong et al.
patent: 2008/0094037 (2008-04-01), Enjalbert et al.

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