Display electric quantity value calibration method and device

Abstract

The invention relates to a display electric quantity value calibration method and a device. The display electric quantity value calibration method and the device are used for avoiding the phenomenon that an electric quantity value changes in a non-smooth mode or in a fluctuating mode. The display electric quantity value calibration method and the device include that when in an electric discharge condition and a acquired electric discharge detection electric quantity value is larger than a display electric quantity value and smaller than a threshold value, the display electric quantity value is not updated; when the acquired electric discharge detection electric quantity value is smaller than the display electric quantity value, the display electric quantity value subtracts 1; when the acquired electric discharge detection electric quantity value is larger than the threshold value, a novel electric discharge detection period is determined; when in an electric charge condition and a acquired electric charge detection electric quantity value is smaller than the display electric quantity value, the display electric quantity value is not updated; when the acquired electric charge detection electric quantity value is larger than the display electric quantity value, the display electric quantity value adds 1; when in a wake-up condition, and resting time is larger than first preset time, the display electric quantity is reacquired; when the resting time is smaller than the first preset time, a novel display electric quantity value is acquired; and when the device is restarted and a difference of starting time and shut-down time is larger than a second preset time, the display electric quantity value is re-determined. The method can avoid the phenomenon that the electric quantity value changes in the non-smooth mode or in the fluctuating mode.

Description

technical field [0001] The invention relates to the technical field of communication electronics, in particular to a calibration method and device for displaying power values. Background technique [0002] At present, lithium-ion batteries are used for power supply in most mobile devices, and correspondingly, the display power value is used to indicate the power status of the lithium-ion battery on the display screen of the mobile device, for example, a percentage is used as a display power value for display. Since the voltage of the lithium-ion battery can basically reflect the power condition, the existing detection of the lithium-ion power is based on the voltage. The specific process is as follows: [0003] Measure the voltage of the battery when it is in the shutdown state to obtain the shutdown voltage n, that is, the power value at this time is 0%; measure the voltage of the battery when it is fully charged to obtain the full voltage m, that is, the power value is 100...

AI Technical Summary

Problems solved by technology

[0007] First, it is impossible to directly measure the real measured electricity by using the existing technology, and only the voltage value is directly measured, and the measured voltage must be calculated from the relevant voltage value, so there may be errors in the measured voltage

There is a linear relationship between the voltage of the lithium-ion battery and the measured power, but due to the existence of errors, the linear relationship does not have a one-to-one correspondence. It took two hours to charge the battery, but it took only half an hour to drain from 80% to 70%, so it will give users a feeling that the displayed battery value changes in a non-smooth way, and they will directly feel that the battery detection is not accurate ;

[0008] Second, the detected power value fluctuates greatly, and there may be a maximum error of 20%. For example, when the system performs some operations with high power consumption, such as playing a movie, the battery voltage will be pulled down. When the movie is finished playing , the voltage of the battery will rise again, so the current solution has the situation that the display power value fluctuates

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