Storage battery residual electric quantity detection method

Abstract

The invention discloses a storage battery residual electric quantity detection method. The method comprises the following steps (1) conducting initializing; (2) judging whether a storage battery is in a charging state or a discharging state currently, conducting charging state electric quantity detection if the storage battery is in the charging state, and conducting discharging state electric quantity detection if the storage battery is in the discharging state; (3) dynamically setting the sampling frequency, and executing the step (2) again. According to the storage battery residual electric quantity detection method, on the premise that the hardware cost is not increased, the storage battery electric quantity detection result becomes quite accurate, the problem that a user of charging equipment cannot accurately know the equipment residual electric quantity is solved, the capacity of automatically correcting an accumulated error in the using process is achieved, the storage battery residual electric quantity detection method can automatically adapt to the influences of storage battery aging and environment temperature changes on the electricity storage capacity and the discharging capacity of the storage battery, the working frequency can be automatically adjusted so as to adapt to the changing working condition of the storage battery, frequency conversion sampling is achieved, and the storage battery residual electric quantity detection method can be widely applied to charging equipment for a smart phone, a tablet personal computer, a portable computer, an electric car and the like.

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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