A method and system for dynamic equalization charging management of an engineering vehicle battery pack

By monitoring and dynamically grouping the SOC, internal resistance, and temperature parameters of engineering vehicle battery packs, the consistency and safety issues in traditional charging strategies are resolved, achieving safe and efficient charging management.

CN120588863BActive Publication Date: 2026-06-09SHENZHEN QUEEN UNION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENZHEN QUEEN UNION TECH CO LTD
Filing Date
2025-06-23
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Traditional dynamic equalization charging strategies cannot meet the consistency management and charging safety requirements of engineering vehicle battery packs. High-rate charging leads to increased individual differences between individual cells, posing a risk of thermal runaway.

Method used

By monitoring parameters such as SOC, internal resistance, and temperature of each individual cell in the battery pack, dynamic grouping and configuration of corresponding weights and charging rate ranges are performed to ensure that each individual cell is charged under appropriate charging stages and conditions.

Benefits of technology

Effectively ensures the charging safety of engineering vehicle battery packs, prevents thermal runaway, and improves charging efficiency and consistency management.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention proposes a dynamic equalization charging management method and system for engineering vehicle battery packs. During charging, the method monitors the state-of-charge (SOC) parameters of each individual cell in the battery pack. These SOC parameters include one or more of the following: SOC, internal resistance, terminal voltage, and temperature. Based on the SOC and / or terminal voltage of each cell, the current charging stage of each cell is determined. A grouping weight and charging rate range for each SOC parameter in the current charging stage are configured. The rate of change of the SOC parameters of each cell is calculated, and the method is applied based on the grouping weight δ. i The battery pack is grouped into equal groups based on the rate of change, and dynamic equalization management is performed on each equalized group of individual cells within the charging rate range. This effectively ensures the charging safety of the engineering vehicle battery pack and prevents thermal runaway.
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