Battery Diagnosis Apparatus and Operating Method Thereof

Abstract

A battery diagnosis apparatus includes an obtaining unit configured to obtain open circuit voltage (OCV) data of a plurality of battery units, a deviation calculating unit configured to calculate OCV variances of the plurality of battery units in a designated time period, based on the OCV data and calculate an OCV deviation with respect to an average, which is a difference between an average OCV variance of the plurality of battery units and an OCV variance of a target battery unit among the plurality of battery units, an exponential moving average (EMA) calculating unit configured to calculate an EMA deviation by applying an EMA filter to the OCV deviation with respect to the average for the target battery unit, and a diagnosing unit configured to diagnose abnormality of the target battery unit based on the EMA deviation.

Dependencies are inferred from the claim text.