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Method and device for charging batteries in mobile devices

  • US 10,116,157 B2
  • Filed: 07/18/2016
  • Issued: 10/30/2018
  • Est. Priority Date: 07/27/2015
  • Status: Active Grant
First Claim
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1. A method for power charging, comprising:

  • establishing an electrical connection between a first electronic device and a second electronic device;

    acquiring, by the second electronic device via the electrical connection, real-time charging voltage information of a battery in the first electronic device, wherein the real-time charging voltage information varies with a charge state of the battery in the first electronic device; and

    controlling by the second electronic device, during charging of the battery in the first electronic device by the second electronic device, an output voltage of the second electronic device to charge the battery of the first electronic device according to the real-time charging voltage information,wherein the real-time charging voltage information for the first electronic device is a real-time internal resistance of the battery in the first electronic device multiplied by a preset current value when the charge state indicates that a present voltage of the battery is smaller than a preset voltage value, wherein an effective internal resistance of the battery varies with the charge state of the battery in the first electronic device; and

    the real-time charging voltage information of the battery in the first electronic device is the preset voltage value when the charge state indicates that the present voltage of the battery in the first electronic device is equal to or greater than the preset voltage value.

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