Method of estimating remaining constant current/constant voltage charging time

CAFC
  • US 8,712,708 B2
  • Filed: 10/25/2010
  • Issued: 04/29/2014
  • Est. Priority Date: 10/25/2010
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • detecting, by an apparatus, an availability of a charger adapter;

    determining, by the apparatus, whether a battery charging point is in a constant current phase or in a constant voltage phase, based on pre-determined battery charging characteristics, wherein the pre-determined battery charging characteristics comprise constant current phase charging characteristics and constant voltage phase charging characteristics;

    calculating, by the apparatus, a time remaining to charge in the constant current phase based on the constant current phase charging characteristics, if the battery charging point is in the constant current phase; and

    calculating, by the apparatus, a time remaining to charge in the constant voltage phase based on the constant voltage phase charging characteristics, if the battery charging point is in the constant voltage phase;

    wherein the time remaining to charge in the constant current phase is based on stored charge characteristics in the constant current phase, when the battery charging point is in the constant current phase and wherein battery stored charge characteristics comprises a battery stored charge value based on monitored tracking of battery charging and discharging.

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