A method and system for estimating a cell idle voltage, a state of charge, and a health status of a battery during operation of the battery

摘要

A method of monitoring a battery while the battery is connected to a load has been developed. The method includes measuring a first current level flowing through the battery to the load and a first voltage level of the battery at a first time, generating an estimated cell blanking voltage (OCV) of the battery at first time based on the first current level of the first one Voltage level and a predefined model of the battery, identifying a first level of excitation of the battery at the first time based on the first voltage level, the first current level and a cost optimization process and identifying a first state of charge (SoC) and / or a state of health (SoH) of the battery below Using the first estimated OCV only in response to the first excitation level being below a predetermined threshold.