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A charging method and mobile terminal

A mobile terminal and charging method technology, applied in the field of communication, can solve the problems of short constant current charging time, long constant voltage charging time, long charging time of lithium battery, etc.

Active Publication Date: 2018-07-06
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the actual charging process, due to the internal resistance of the lithium battery, the lithium battery voltage measured by the power management chip is often higher than the actual voltage of the lithium battery, resulting in a shorter constant current charging time and a longer constant voltage charging time of the lithium battery. , making the total charging time of the lithium battery longer

Method used

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  • A charging method and mobile terminal

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Embodiment Construction

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0045] Embodiments of the present invention provide a charging method and a mobile terminal, which can shorten the charging time of a battery. Each will be described in detail below.

[0046] see figure 1 , figure 1 It is a flow chart of a charging method disclosed in the embodiment of the present invention. Such as figure 1 As shown, the charging method described in this embodiment includes steps:

[0047] 101. When charging the battery wit...

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Abstract

The embodiment of the present invention discloses a charging method and a mobile terminal. The method includes: when charging the battery with a constant current, setting the initial cut-off voltage and the initial charging current of the battery, the initial cut-off voltage is greater than the safety cut-off voltage of the battery, and the initial The difference between the cut-off voltage and the safety cut-off voltage is less than or equal to the preset voltage difference; detect the battery voltage of the battery; judge whether the current value of the battery voltage is equal to the initial cut-off voltage; when the current value of the battery voltage is equal to the initial cut-off voltage, gradually lower it Initial cut-off voltage and initial charging current, until the initial cut-off voltage is less than or equal to the safety cut-off voltage, the battery is charged at a constant voltage, and the voltage of the constant-voltage charge is the safety cut-off voltage. By implementing the embodiment of the present invention, the charging time of the battery can be shortened.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a charging method and a mobile terminal. Background technique [0002] At present, mobile terminals such as mobile phones and tablet computers generally use lithium batteries for power supply, and the charging of lithium batteries is generally divided into four processes: trickle charging, pre-charging, constant-current charging, and constant-voltage charging. During the constant current charging process, due to the high current charging, the lithium battery can be charged quickly, saving the charging time of the lithium battery. When the voltage of the lithium battery reaches the safe cut-off voltage, it enters the constant voltage charging stage. In order to ensure the safety of the lithium battery, the safe cut-off voltage is generally set to a fixed value, which is lower than the safe voltage of the lithium battery. However, in the actual charging process, due to the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/0071H02J7/00
Inventor 邓南巍
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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