车用电池管理系统绝缘监测及故障诊断  

Insulation monitoring and fault diagnosis of battery management system of vehicles

作　　者：戚益炝 周文华[1] 朱江华 郭修其[1] QI Yiqiang;ZHOU Wenhua;ZHU Jianghua;GUO Xiuqi

机构地区：[1]浙江大学,浙江杭州310027

出　　处：《现代机械》2023年第5期5-9,共5页Modern Machinery

摘　　要：为提高纯电动汽车动力电池绝缘监测系统的准确性和可靠性,基于相对成熟的硬件方案,设计了绝缘监测系统的故障自诊断策略,并针对电桥法计算绝缘电阻时间长的缺点设计了两种可供选择的计算策略,在MATLAB/Simulink中完成核心控制算法的图形化开发和代码自动生成,最后,硬件在环仿真测试系统上进行试验。试验结果表明,该系统能实时准确监测动力电池组的绝缘电阻,且两种检测方式均能满足电动汽车动力蓄电池的绝缘监测需求。In order to improve the accuracy and reliability of the insulation monitoring system of the power batteries of electric vehicles,a fault self-diagnosis strategy of the insulation monitoring system is designed based on a relatively mature hardware scheme.Aiming at the disadvantage of long calculation time of insulation resistance by the bridge method,two alternative calculation strategies are designed.The graphical development of the core control algorithm and automatic code generation are completed in MATLAB/Simulink,and the test is carried out on the hardware-in-the-loop simulation test platform.The results show that the system can accurately monitor the insulation resistance of the power batteries in real time,and the two detection methods can both meet the insulation monitoring requirements of the power batteries of electric vehicles.

关 键 词：纯电动汽车 绝缘监测 故障自诊断 

分 类 号：U463.6[机械工程—车辆工程]