Mobile terminal, DC-charging power source adaptor, and charging method
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United States of America Patent
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Feb 20, 2018
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N/A
app pub date -
Mar 8, 2016
filing date -
Aug 5, 2015
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Abstract
The disclosure discloses a mobile terminal, a DC-charging power source adaptor, and a charging method, the mobile terminal comprising: a battery configured to store electrical energy; a USB interface configured to be engaged with an external device; and a microprocessor configured to determine whether two differential data pins of the USB interface are shorted, upon detecting an external device being inserted into the USB interface; and if so, to communicate with the inserted external device, wherein if the external device is a DC-charging power source adaptor, then the DC-charging power source adaptor switches two communication pins of a charging interface thereof from being shorted by default to being disconnected, and communicates with the microprocessor; and the microprocessor detects voltage of the battery after communicating successfully with the DC-charging power source adaptor, and if the voltage of a battery core lies in a range delimited by preset DC-charging thresholds, then the microprocessor controls the battery to be DC-charged using charging voltage output by the DC-charging power source adaptor, and determines a value of the charging voltage of the DC-charging power source adaptor from the current voltage of the battery core.
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