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Charging control method and device and terminal device

A charging control method and terminal equipment technology, applied in the electronic field, can solve the problems of shortening battery life, battery explosion, voltage and current value deviation, etc., and achieve the effect of improving safety and accuracy and prolonging life

Active Publication Date: 2016-06-08
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the deviation of the voltage and current values ​​sampled by the charging chip, the control accuracy presents a normal distribution. If the battery is charged at a higher than normal cut-off voltage due to the sampling error of the charging chip, the battery life will be shortened. , and even cause the battery to explode, seriously affecting the user experience

Method used

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  • Charging control method and device and terminal device
  • Charging control method and device and terminal device
  • Charging control method and device and terminal device

Examples

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Embodiment Construction

[0030] Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, and are intended to explain the present application, and should not be construed as limiting the present application.

[0031] The charging control method, device and terminal device according to the embodiments of the present application will be described below with reference to the accompanying drawings.

[0032] First, in order to describe the embodiments of the present application more clearly, some terms in the present application are explained first.

[0033] The "cut-off voltage value of the charging chip" in the embodiment of the present application refers to the reference value that can be set to judge whether the battery is fully ch...

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PUM

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Abstract

The invention provides a charging control method and device and a terminal device. The method comprises the steps that whether a current voltage value of a battery equals a reference voltage value or not is judged, and the reference voltage value is smaller than or equal to a cut-off voltage value of a charging chip; if the current voltage value of the battery equals the reference voltage value, whether a charging current of the battery is zero or not is judged; if not, the reference voltage value of the charging chip is adjusted according to a preset rule till the charging current of the battery is zero. By means of the charging control method and device and the terminal device, it is guaranteed that the charging voltage of the battery cannot be higher than the safety voltage, the safety and accuracy of the battery charging process are improved, and the service life of the battery is prolonged.

Description

technical field [0001] The present application relates to the field of electronic technology, and in particular to a charging control method, device and terminal equipment. Background technique [0002] At present, the power supply of the mobile terminal generally uses a rechargeable lithium battery, and the lithium battery is charged through a DC converter charging chip. [0003] The charging process of the battery is generally divided into four stages: trickle charging, pre-charging, constant current charging, and constant voltage charging. In the constant voltage charging stage, the charging chip monitors the current voltage of the battery, and when the battery voltage reaches the set cut-off voltage, the charging ends. [0004] However, due to the deviation of the voltage and current values ​​sampled by the charging chip, the control accuracy presents a normal distribution. If the battery is charged at a higher than normal cut-off voltage due to the sampling error of th...

Claims

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Application Information

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IPC IPC(8): H02J7/02H01M10/44
CPCH01M10/44H02J7/0026H02J7/0027H02J7/02Y02E60/10
Inventor 邓南巍
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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