Terminal Device, Method for Monitoring Battery Safety Therefor

Patent metadata

Field	Value
Publication number	US-2020081069-A1
Application number	US-201916684347-A
Country	US
Kind code	A1
Filing date	Nov 14, 2019
Priority date	Nov 13, 2017
Publication date	Mar 12, 2020
Grant date	—

Abstract

Provided are a terminal device and a method for monitoring battery safety therefor. The method for monitoring battery safety includes the following. When a battery of the terminal device is in a stable state, a voltage curve of the battery is generated by acquiring in real time a voltage of the battery. A voltage drop of the battery of a preset duration is obtained according to the voltage curve. Whether the battery is abnormal is determined according to the voltage drop of the preset duration.

First claim

What is claimed is:

1 . A method for monitoring battery safety of a terminal device, comprising:
generating a voltage curve of a battery of the terminal device by acquiring in real time a voltage of the battery, when the battery is in a stable state; acquiring a voltage drop of the battery of a preset duration according to the voltage curve; and determining whether the battery is abnormal according to the voltage drop of the preset duration.

2 . The method of claim 1 , wherein the battery is determined to be in the stable state when the battery is fully charged and the terminal device remains coupled with an adaptor.

3 . The method of claim 1 , wherein when the terminal device is charged for the first time, determining whether the battery is abnormal according to the voltage drop of the preset duration comprises:
obtaining a reference value corresponding to the preset duration; comparing the voltage drop with the reference value; and determining that the battery is abnormal upon determining that the voltage drop is greater than the reference value.

4 . The method of claim 3 , wherein the reference value is obtained according to at least one of capacity, material, usage frequency, and aging degree of the battery.

5 . The method of claim 1 , wherein when the terminal device is charged more than a preset number of times,
acquiring the voltage drop of the battery of the preset duration according to the voltage curve comprises:
acquiring a preset number of voltage drops by acquiring the voltage drop of the preset duration in each of a preset number of previous charging processes before present charging; and
determining whether the battery is abnormal according to the voltage drop of the preset duration comprises:
obtaining a reference value corresponding to the preset duration by calculating an average value of the preset number of voltage drops;
determining whether a difference between the voltage drop of the preset duration after present charging and the reference value is greater than a preset threshold corresponding to the preset duration; and
determining that the battery is abnormal upon determining that the difference is greater than the preset threshold.

6 . The method of claim 1 , wherein when the terminal device is charged less than a preset number of times,
acquiring the voltage drop of the battery of the preset duration according to the voltage curve comprises:
acquiring a plurality of voltage drops by acquiring the voltage drop of the preset duration in each of a plurality of previous charging processes before present charging, wherein the number of voltage drops acquired is equal to the number of times of charging of the terminal device; and
determining whether the battery is abnormal according to the voltage drop of the preset duration comprises:
obtaining a reference value corresponding to the preset duration by calculating an average value of the plurality of voltage drops;
determining whether a difference between the voltage drop of the preset duration after present charging and the reference value is greater than a preset threshold corresponding to the preset duration; and
determining that the battery is abnormal upon determining that the difference is greater than the preset threshold.

7 . The method of claim 2 , further comprising:
sending alert information indicative of battery abnormality by the terminal device or the adaptor, upon determining that the battery is abnormal.

8 . The method of claim 1 , further comprising:
restricting corresponding functions of the terminal device, upon determining that the battery is abnormal.

9 . The method of claim 8 , wherein restricting corresponding functions of the terminal device comprises:
determining abnormality grade of the battery; and restricting corresponding functions of the terminal device according to the abnormality grade.

10 . A terminal device, comprising a memory, a processor, and battery-safety monitoring programs which are stored in the memory and are capable of running on the processor, when executed by the processor, the battery-safety monitoring programs being configured to:
generate a voltage curve of a battery of the terminal device by acquiring in real time a voltage of the battery, when the battery is fully charged and the terminal device remains coupled with an adaptor; acquire a voltage drop of the battery of a preset duration according to the voltage curve; and determine whether the battery is abnormal according to the voltage drop of the preset duration.

11 . The terminal device of claim 10 , wherein the battery-safety monitoring programs configured to determine whether the battery is abnormal is configured to:
determine a reference value corresponding to the preset duration; compare the voltage drop with the reference value; and determine that the battery is abnormal upon determining that the voltage drop is greater than the reference value.

12 . The terminal device of claim 11 , wherein the reference value is determined according to at least of capacity, material, usage frequency, and aging degree of the battery.

13 . The terminal device of claim 10 , wherein when the terminal device is charged more than a preset number of times,
the battery-safety monitoring programs configured to acquire the voltage drop of the battery of the preset duration according to the voltage curve is configured to:
acquire a preset number of voltage drops by acquiring the voltage drop of the preset duration in each of a preset number of previous charging processes before present charging;
the battery-safety monitoring programs configured to determine whether the battery is abnormal according to the voltage drop of the preset duration is configured to:
obtain a reference value corresponding to the preset duration by calculating an average value of the preset number of voltage drops;
determine whether a difference between the voltage drop of the preset duration after present charging and the reference value is greater than a preset threshold corresponding to the preset duration; and
determine that the battery is abnormal upon determining that the difference is greater than the preset threshold.

14 . The terminal device of claim 10 , wherein when the terminal device is charged less than a preset number of times,
the battery-safety monitoring programs configured to acquire the voltage drop of the battery of the preset duration according to the voltage curve is configured to:
acquire a plurality of voltage drops by acquiring the voltage drop of the preset duration in each of a plurality of previous charging processes before present charging, wherein the number of voltage drops acquired is equal to the number of times of charging of the terminal device; and
the battery-safety monitoring programs configured to determine whether the battery is abnormal according to the voltage drop of the preset duration is configured to:
obtain a reference value corresponding to the preset duration by calculating an average value of the plurality of voltage drops;
determine whether a difference between the voltage drop of the preset duration after present charging and the reference value is greater than a preset threshold; and
determine that the battery is abnormal upon determining that the difference is greater than the preset threshold.

15 . A method for monitoring battery safety of a terminal device, comprising:
detecting in real time a voltage of a battery of the terminal device; determining a voltage drop of the battery of a preset duration according to the voltage detected in r

Assignees

• Guangdong Oppo Mobile Telecommunications Corp Ltd

Inventors

• Chen Wei
• Zhang Jun
• Zeng Yuanqing
• Hu Zhihua

Classifications

• G06F1/28

  Supervision thereof, e.g. detecting power-supply failure by out of limits supervision · CPC title

• G06F1/263

  Arrangements for using multiple switchable power supplies, e.g. battery and AC (G06F1/30 takes precedence) · CPC title

• G01R31/3648

  comprising digital calculation means, e.g. for performing an algorithm · CPC title

• G01R31/392 Primary

  Determining battery ageing or deterioration, e.g. state of health · CPC title

• G01R31/52

  Testing for short-circuits, leakage current or ground faults · CPC title