Battery electric quantity detecting method and device

Abstract

The utility model discloses a detecting method of battery capacity, comprising the following steps: smoothed value of battery voltage can be get through wave filtering of sampling value of the battery voltage; current battery threshold is confirmed according to the prior business mode; promoting information is done according to the comparison result for the smoothed value of battery voltage and the battery threshold and the information is used for promoting current battery capacity. The utility model has the advantages of more accurately weighing rest capacity of the battery, remedying the failure that the rest capacity of the batter is confirmed through only using single sampling value of the battery voltage and single battery threshold for prior art and bringing good using experience for users through the embodiment, current battery threshold which is confirmed according to current business mode and current battery capacity which is get through comparison between the smoothed valve of the battery voltage and the battery threshold through wave filtering of a plurality of sampling value for battery voltage.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for detecting battery power. Background technique [0002] With the advancement of network and communication technology, various wireless mobile terminals, such as portable phones, PDAs (Personal digital assistants, personal digital assistants), notebook computers, etc., are popular because of their complete functions and easy portability. These wireless mobile terminals often need to support various applications and services, such as multimedia functions such as voice calls, video calls, video and audio playback, and are usually powered by batteries due to the requirements of portability and mobility. During use, the user judges and estimates the time that the battery of the wireless mobile terminal can continue to be used according to the indicator light of the terminal, the battery power indication on the LED (Light Emitting Diode, light emitting dio...

AI Technical Summary

Problems solved by technology

[0011] (1) If there is a voltage drop caused by short-term high-current discharge, it may cause a rapid drop in the number of battery cells, making the user mistakenly think that the battery power consumption is fast;

[0012] (2) For the long-term high-current discharge process, if there is no relevant business information to participate in the judgment, the number of battery cells determined according to the discharge curve corresponding to the low-current discharge process has a higher voltage threshold, resulting in a decrease in the number of battery cells Too fast, when the voltage drops to the shutdown threshold, it will trigger an early shutdown when there is still a considerable amount of power remaining;

[0013] (3) Since the existing scheme only uses a single sampling operation to compare and determine the number of battery cells in the sampling process of the battery voltage, the short-term fluctuation of the battery voltage will cause a misjudgment of the number of battery cells

[0014] Therefore, the disadvantage of the existing technology is that it uses a single battery threshold, does not consider the difference between the discharge characteristics of high-current services and low-current services, cannot determine the battery threshold in real time according to different service modes, and cannot accurately measure the current remaining battery capacity. Power, poor user experience

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