Improved Method for Measuring and Calculating System Battery Power

Abstract

The invention discloses an improved method for measuring and calculating system battery electricity quantity. The method includes the following steps that: step one, voltage reference U which is obtained through using an ADC battery voltage measurement method is utilized to performed voltage compensation according to the states of main power consumption devices of a system, and corresponding electricity quantity can be obtained through a voltage-electricity quantity relationship according to post-compensation voltage; and step two, one or more kinds of processing of anti-rebound processing, slope limiting processing, simulated charge and discharge processing, electricity quantity filtering processing and electricity quantity saving processing are performed on the measured electricity quantity of the battery, and currently displayed electricity quantity of the battery is updated with the processed electricity quantity. With the improved method for measuring and calculating the system battery electricity quantity of the invention adopted, under the premise that current information is unavailable, a method in which ADC voltage is adopted to measure the electricity quantity of the battery, and one or more kinds of processing of anti-rebound processing, slope limiting processing, simulated charge and discharge processing, electricity quantity filtering processing and electricity quantity saving processing are performed on the measured electricity quantity which is obtained through adopting the above method, and therefore, measurement accuracy is greatly increased.

Description

technical field [0001] The invention relates to a computer automatic measurement method, in particular to an improved method for measuring and calculating battery power. Background technique [0002] In devices using batteries such as tablet computers and mobile phones, it is generally necessary to display the current battery power. For occasions that require high measurement accuracy, special chips such as coulomb counters are generally used. The coulomb counter can accurately calculate the energy stored and consumed by the battery by measuring the voltage and charge / discharge current of the battery, so as to obtain the current battery power. [0003] In order to save costs, for consumer electronics products that do not require very high precision, such dedicated fuel gauge chips are usually not used, but the battery voltage is measured and calculated by only using the ADC to measure and calculate the battery power. The principle of this method is that the output voltage ...

AI Technical Summary

Problems solved by technology

[0008] The present invention mainly solves the problems of large deviation of battery charge and large fluctuation of battery charge and discharge curves when using only voltage mode to measure battery power online under the limitation of no current measurement function.

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