Operation method of cell residual volume and combined cell

Abstract

A battery residual capacity operating method, the discharge capacity of the battery is operated on the basis of an integrated value of a product of discharge current and voltage of the battery to operate the residual capacity by electric energy. In this residual capacity operating method, the internal resistance of the battery is measured, an integrated value of the electric energy consumed by the internal resistance is added to the discharge capacity operated value operated on the basis of the integrated value of the product of service current and voltage of the battery, to operate the discharge capacity of the battery, and the residual capacity is operated on the basis of the discharge capacity. This pack battery comprises an operating circuit 2 for operating the discharge capacity of the battery on the basis of the integrated value of the product of service current and voltage of the battery, and operating the residual capacity by electric energy. The operating circuit 2 measures the internal resistance of the battery, operates the discharge capacity the the battery by adding the integrated value of the electric energy consumed by the internal resistance to the discharge capacity operated value operated on the basis of the integrated value of service current and voltage of the battery, and the residual capacity is operated on the basis of the discharge capacity.

Description

technical field [0001] The invention relates to an operation method for accurately calculating the remaining capacity of a battery and an assembled battery with a built-in operation circuit. Background technique [0002] Electronic instruments that can calculate and display the remaining capacity of the battery are very user-friendly. With this device, the user can estimate the remaining usage time when using the electronic instrument. It is very important for this electrical device to display the remaining capacity of the battery as accurately as possible. This is because if the remaining capacity is incorrectly displayed, it may be unrealistic to show that there is power but it is actually unusable, or it shows that there is no power but it is actually usable. [0003] There are two ways to display the remaining capacity of the battery, the method expressed by the current expressed in Ah and the method expressed by the electric energy expressed in Wh. In the method of e...

AI Technical Summary

Problems solved by technology

[0005] The discharge capacity calculated by the product of discharge current, voltage and discharge efficiency according to time is not the same as the actual discharge capacity of the battery, and there are some errors

Especially when the discharge current fluctuates, errors are likely to occur between the calculated discharge capacity and the actual discharge capacity

Images