Battery management methods and equipment

VN127887APending Publication Date: 2026-08-17LG ENERGY SOLUTION LTD
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Patent Information

Application Number
VN1202601293
Authority / Receiving Office
VN · VN
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-01-12
Filing Date
2025-01-10
Publication Date
2026-08-17

AI Technical Summary

Technical Problem

Existing battery packs face issues with uneven deterioration of individual batteries, leading to reduced overall capacity utilization due to non-uniform degradation, which is challenging to manage effectively.

Method used

A battery management device and method that acquires profiles for each battery in a pack, calculates target values based on specific points in these profiles, generates distribution profiles, and diagnoses the state of the battery pack by comparing these profiles against predetermined conditions to identify and address imbalance.

Benefits of technology

Enables accurate diagnosis of battery pack degradation states, allowing for timely intervention to balance capacities and maintain optimal performance by identifying and addressing uneven battery degradation.

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Abstract

The invention relates to a battery management device. The battery management device, according to a scheme of the invention, comprises a characteristic curve acquisition unit configured to acquire the first characteristic curve for each of the many batteries included in the battery pack; and a diagnostic unit configured to calculate the target value based on the capacity value for each of these many batteries as a diagnostic factor based on the first target point included in each of the many first characteristic curves, generating a distributed characteristic curve indicating the corresponding relationship between the many calculated target values ​​and the number of each of these many target values, determining whether the distributed characteristic curve satisfies a predefined condition, and diagnosing the state of the battery pack according to the determined result.
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