A method for detecting the remaining power of a storage battery

Abstract

The invention discloses a method for detecting the remaining power of a storage battery, which includes the following steps: S1: initialization; S2: judging whether the storage battery is currently in a charging state or a discharging state, and if it is in a charging state, it will detect the amount of electricity in the charging state, and if it is in a discharging state, it will perform discharge State power detection; S3: Dynamically set the sampling frequency, return to step S2. On the premise of not increasing the hardware cost, the present invention makes the battery power detection result very accurate, solves the problem that the user of the charging device cannot accurately grasp the remaining power of the device, and has the ability of automatic calibration of accumulated errors during use, It can automatically adapt to the impact of battery aging and environmental temperature changes on the storage capacity and discharge capacity of the battery, and can automatically adjust the working frequency to adapt to the changing working state of the battery, realizing frequency conversion sampling, and can be widely used in smart phones, tablet computers, portable Computers, electric vehicles and other charging equipment.

Description

technical field [0001] The invention relates to an analog quantity detection method, in particular to a storage battery remaining power detection method. Background technique [0002] In the charging equipment, the analog quantity collector is usually used to obtain the voltage between the plates of the battery, and the percentage of the remaining power of the battery is obtained indirectly from the mapping relationship between the percentage of the remaining power of the battery and the voltage between the plates of the battery. [0003] However, if figure 1 As shown, the percentage of remaining battery capacity and the voltage between the plates of the battery often only show an approximate linear correlation in the middle of the function image, but when the power is low or high, the voltage between the plates of the battery increases with the percentage of remaining battery power. decrease and a rapid decline. As a result, when the charging device is just fully charged ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the disadvantages in the prior art that the user cannot accurately grasp the remaining power of the charging device, and provide a device with very accurate detection results that can avoid rebounding errors in the percentage of remaining power displayed by the charging device. , which can ensure the accuracy of the detection result of the remaining power percentage and at the same time, take into account the power saving characteristics of the battery remaining power detection method

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