A method and device for detecting the battery after charging the battery

Abstract

The invention discloses a method and device for detecting the electricity quantity after battery charging. The method comprises: an initial voltage before charging of a battery and charging time of charging of the battery are obtained; according to the initial voltage and the charging time, the voltage of the battery after charging is obtained based on a pre-obtained corresponding relationship table between the battery voltage and the charging time; and on the basis of the voltage of the battery after charging, the electricity quantity of the battery after charging is obtained based on the pre-obtained corresponding relationship table. With the method disclosed by the invention, a problem that the voltage is raised and thus the electricity quantity is too high during the charging process is solved, so that the actual electricity quantity of the current battery is reflected truly and accurately.

Description

technical field [0001] The invention relates to the field of lithium battery products, in particular to a method and a device for detecting the electric quantity of a battery after charging. Background technique [0002] At present, most electronic products are powered by lithium batteries, but the charging and discharging curves of lithium batteries are not linear and there is a big difference between charging and discharging curves. This leads to two obvious problems: [0003] 1. When discharging, the discharge time of different power ranges is not linear. It gives people an intuitive feeling that some ranges of power drop faster, and some ranges of power drop slower. [0004] 2. The charging curve and discharging curve are not the same, resulting in inconsistencies between the power display during charging and the power display during discharging, resulting in an unfriendly user experience. [0005] Due to the above two characteristics of lithium batteries, the traditio...

AI Technical Summary

Problems solved by technology

[0003] 1. When discharging, the discharge time of different power ranges is not linear. It gives people an intuitive feeling that some ranges of power drop faster, and some ranges of power drop slower

[0004] 2. The charging curve and discharging curve are not the same, resulting in inconsistencies between the power display during charging and the power display during discharge, resulting in an unfriendly user experience

[0005] Due to the above two characteristics of lithium batteries, the traditional power detection will encounter many problems, such as: when discharging, due to the nonlinear relationship between the discharge time and the discharge voltage, the traditional method of reflecting the power by voltage will appear. The power of the intervals drops faster, and the power of some intervals drops more slowly; when charging, because the battery voltage is pulled up, the charging curve and the discharging curve are inconsistent, so there will be a problem that the voltage will drop rapidly after the charging is completed.

Images