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MOBILE TERMINAL, DC-CHARGING POWER SOURCE ADAPTOR, AND CHARGING METHOD

  • US 20170040812A1
  • Filed: 02/24/2016
  • Published: 02/09/2017
  • Est. Priority Date: 08/05/2015
  • Status: Active Grant
First Claim
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1. A mobile terminal, comprising:

  • a battery configured to store electric energy;

    a USB interface configured to have an external device inserted there into; and

    a microprocessor configured to judge whether two differential data pins of the USB interface are shorted, upon detecting an external device being inserted into the USB interface;

    if the two differential data pins of the USB interface are not shorted, to conduct USB communication with the inserted external device;

    if the USB communication fails, to conduct UART communication with the inserted external device;

    if the UART communication succeeds, to determine the inserted external device as a DC-charging power source adaptor; and

    to detect voltage of the battery, and if the voltage of the battery is in a range delimited by preset DC-charging thresholds, to control charging voltage output by the DC-charging power source adaptor to DC-charge the battery, and to determine a charging voltage value of the DC-charging power source adaptor according to the current voltage of the battery.

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