车云协同下动力电池多级安全管理方法研究

doi:10.19562/j.chinasae.qcgc.2025.06.003

Abstract

Abstract:

In order to solve the problem of thermal runaway safety of power batteries in new energy vehicles， in this paper a multi time scale safety management method for batteries based on vehicle-cloud collaboration. On the short time scale， the value-rate model and two-dimensional fault feature are employed for the real-time diagnosis of outliers and inconsistencies pertaining to battery packs on the vehicle-end battery management system. On the long-timescale， the cloud utilizes a substantial quantity of historical data and information about vehicle-end warnings， combined with improved Shannon entropy， multi-scale fuzzy entropy， and anomaly coefficient methods， to predict the trend of the thermal runaway based on incoming data. Finally， validation based on historical data from actual thermal runaway vehicles shows that the proposed method can issue early warnings on the cloud at least five days in advance， achieving multi-level management of the long and short time domain collaboration between the vehicle and cloud ends of power batteries.

Key words: power batteries, thermal runaway, vehicle-cloud collaboration, battery management, multi-entropy fusion

Linsui Cheng,Jibin Yang,Pengyi Deng,Xiaohua Wu,Xiaohui Xu,Ke Deng. Research on Multi-level Safety Management Method of Power Battery Under Vehicle-Cloud Collaboration[J].Automotive Engineering, 2025, 47(6): 1037-1047.

Figures/Tables 20

References 30

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数据分类	字段名称	字段定义
整车数据	yr_modahrmn、speed、vehicle_state、charging_status、Mode、total_volt、total_current、mileage、standard_soc	采集时间、车速、车辆状态、充电状态、运行模式、总电压、总电流、行驶里程、SOC
可充电储能装置	cell_volt_list、cell_temp_list	单体电压列表、单体温度列表
报警标志	max_alarm_lvl、alarm_info	最高报警等级、通用报警标志

危险等级	VDI阈值范围	CND阈值范围
L0	（0，1.2）	（0，10）
L1	（1.2，2.2）	（10，50）
L2	（2.2，+∞）	（50，100）

危险等级	A阈值范围
L0	（0，0.1）
L1	（0.1，0.2）
L2	（0.2，+∞）

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Research on Multi-level Safety Management Method of Power Battery Under Vehicle-Cloud Collaboration

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