Battery management methods and equipment

VN127888APending Publication Date: 2026-08-17LG ENERGY SOLUTION LTD
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Patent Information

Application Number
VN1202601295
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 management systems struggle to accurately diagnose and address uneven deterioration among batteries in a battery pack, leading to inefficiencies and capacity loss due to non-uniform degradation.

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 to predetermined conditions, identifying and addressing imbalance through pack balancing functions.

Benefits of technology

Enables precise diagnosis of battery pack deterioration states, optimizing performance by identifying and correcting uneven degradation, thereby enhancing the overall capacity and efficiency of the battery system.

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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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