Systems and methods for simultaneously charging a battery with multiple power sources
First Claim
1. A battery charging controller configured to couple to a battery gauge of a battery and a plurality of power converters, so as to supply power to a terminal of the battery, wherein the controller is configured to:
- assign a priority level to each of the plurality of power converters;
set a target value for each of the plurality of power converters in accordance with a feedback control loop based on a comparison between one or more profile target values of a charging profile and one or more battery metrics measured by one or more sensors; and
cause the plurality of converters to simultaneously charge the battery in accordance with their respective assigned priority levels and target values.
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Abstract
Systems and methods for power management are disclosed herein. In one disclosed embodiment, a battery charging system includes a battery charger for simultaneously charging a battery (and/or providing power to a system load) with multiple power sources, using a closed-loop charging servo target based on measurements taken by one or more gauges. In some embodiments, the multiple power sources may be utilized simultaneously according to a charging profile that specifies, e.g., one or more battery charging parameters, as well as according to determined priority levels for one or more of the multiple power sources coupled to the battery. In some embodiments, the priority level of a given power source is not fixed; rather, the priority level for the given power source may change based upon the characteristics of the given power source. In some embodiments, the priority levels for the multiple power sources are implemented using cascaded voltage target values.
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Citations
19 Claims
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1. A battery charging controller configured to couple to a battery gauge of a battery and a plurality of power converters, so as to supply power to a terminal of the battery, wherein the controller is configured to:
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assign a priority level to each of the plurality of power converters; set a target value for each of the plurality of power converters in accordance with a feedback control loop based on a comparison between one or more profile target values of a charging profile and one or more battery metrics measured by one or more sensors; and cause the plurality of converters to simultaneously charge the battery in accordance with their respective assigned priority levels and target values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method performed by a battery charging system, comprising:
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assigning, by a controller of the battery charging system, a priority level to each of a plurality of power converters; configuring the plurality of power converters to simultaneously charge a battery in accordance with their respective assigned priority levels and responsive to a feedback control loop comprising a comparison between one or more profile target values of a charging profile and one or more battery metrics measured by a battery gauge. - View Dependent Claims (10, 11, 12, 13)
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14. A portable electronic device, comprising:
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a battery; and a controller configured to; couple to a battery gauge configured to measure one or more battery metrics of the battery; couple to a plurality of power converters configured to supply power to a terminal of the battery; assign a priority level to each of the plurality of power converters; and configure the plurality of power converters to simultaneously charge the battery in accordance with their respective assigned priority level and a feedback control loop based on a comparison between a charging profile and the one or more battery metrics. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification