Battery diagnosis device and operation method thereof
WO2026135325A1PCT designated stage Publication Date: 2026-06-25LG ENERGY SOLUTION LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- LG ENERGY SOLUTION LTD
- Filing Date
- 2025-12-18
- Publication Date
- 2026-06-25
AI Technical Summary
Technical Problem
Conventional battery cell diagnosis methods are limited to low charge/discharge rates, failing to detect abnormalities at higher rates due to overvoltage issues, posing a risk of device damage from undetected failures.
Method used
A battery diagnostic device that utilizes temperature-voltage data to diagnose abnormalities in battery units by identifying specific poles on temperature-voltage graphs, allowing for accurate diagnosis at various charge/discharge rates.
Benefits of technology
Enables accurate detection of battery abnormalities, including capacity loss and lithium loss, independent of charge/discharge rates, thereby reducing the risk of device damage.
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Smart Images
Figure KR2025022204_25062026_PF_FP_ABST
Abstract
A battery diagnosis device according to an embodiment disclosed in the present document may comprise: an interface for acquiring temperature-voltage data of a battery unit; and one or more processors for diagnosing an abnormality of the battery unit on the basis of positions of multiple pole points on the temperature-voltage data.
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