Battery diagnostic device and method of operating the same

By acquiring and converting time-series voltage data of battery cells and calculating cell diagnostic characteristic values, accurate diagnosis of abnormal battery conditions is achieved, reducing the risk of equipment damage.

CN122459699APending Publication Date: 2026-07-24LG ENERGY SOLUTION LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LG ENERGY SOLUTION LTD
Filing Date
2025-01-20
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

When batteries are defective, the likelihood of equipment (such as EVs and ESSs) being damaged increases, necessitating an effective method for detecting abnormal battery conditions to reduce the risk of damage.

Method used

By acquiring time-series voltage data of battery cells, converting it into standard fractional data, calculating cell diagnostic characteristic values, and diagnosing abnormal states of battery cells based on these characteristic values.

Benefits of technology

This improves the accuracy of battery diagnostics and reduces the likelihood of equipment damage.

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Abstract

A battery diagnostic device according to the embodiments disclosed in this document can include an acquisition unit to acquire time-series voltage data of a plurality of battery cells, a conversion unit to convert the time-series voltage data into Z-score data in units of a cell group, a calculation unit to calculate a cell diagnostic feature value based on the Z-score data, and a diagnosis unit to diagnose an abnormality of the plurality of battery cells based on the calculated cell diagnostic feature value.
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Citation Information

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