Estimating Battery Cell Parameters

摘要

This document describes techniques and apparatuses for estimating battery cell parameters. In some embodiments, these techniques and apparatuses enable the isolation of a battery cell from other battery cells. Voltage levels of the isolated battery cell are measured while varying amounts of current are drawn from the cell. Parameters of the isolated battery cell can then be estimated based on the measured voltage levels and various amounts of current that are drawn from the cell.

主权项

1. A computer-implemented method comprising:
drawing a first amount of current from a battery cell of a computing device; measuring, while the first amount of current is drawn, a first instance of the battery cell's voltage; drawing a second amount of current from the battery cell; measuring, while the second amount of current is drawn, a second instance of the battery cell's voltage; and estimating an internal resistance of the battery cell based on the first and second amounts of current drawn from the battery cell and the first and second instances of the battery cell's voltage.