An electric vehicle charging management control method

By decoupling multidimensional impedance characteristics and inserting zero-current commands in electric vehicle charging management, a zero-current relaxation window is constructed, and the voltage relaxation curve is analyzed. This solves the problem of insufficient monitoring of battery polarization response under hardware cost constraints in electric vehicle charging management, and realizes accurate identification of battery aging stage and lithium plating reaction and dynamic adjustment of charging strategy.

CN122402272APending Publication Date: 2026-07-17CHONGQING VEHICLE TEST & RES INST CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING VEHICLE TEST & RES INST CO LTD
Filing Date
2026-06-03
Publication Date
2026-07-17

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Abstract

本发明涉及电动汽车充电管理技术领域，公开了一种电动汽车充电管理控制方法，包括：通过不同频段扰动下的电压响应解耦得到多维阻抗特征，以此识别电池老化阶段并重构基础充电策略；在实时充电阶段，基于通信协议时序在电流序列中插入零电流指令，构造零电流弛豫窗口；在窗口内提取欧姆极化电压，并利用非线性函数解析电压弛豫曲线以解耦浓差极化强度；根据曲线特征消散参数调节下一周期的脉冲占空比或电流幅值，使充电电流适配电荷接受能力上限；同时监测弛豫曲线微分特征，若识别到析锂特征平台则触发去极化脉冲序列。本发明实现了在不增加硬件成本的前提下，对极化状态与析锂风险的精确监测与闭环控制。
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