磷酸铁锂电池在电力应用中输出电流异常状态监测方法  

Monitoring Method for Abnormal Output Current of Lithium Iron Phosphate Batteries in Power Applications

作　　者：蒋仕平 代云飞 沙树勇 JIANG Shiping;DAI Yunfei;SHA Shuyong(Huafu(Jiangsu)Lithium Battery New Technology Co.,Ltd.,Gaoyou 225600,China)

机构地区：[1]华富(江苏)锂电新技术有限公司,江苏高邮225600

出　　处：《电工技术》2024年第16期38-40,共3页Electric Engineering

摘　　要：为实现电池电流的高精度监测,提出磷酸铁锂电池在电力应用中输出电流异常状态监测方法。利用电流传感器采集磷酸铁锂电池输出电流信号并对信号进行转换,利用扩展卡尔曼滤波技术降噪处理并进行归一化,进而修正信号误差,提取电流异常特征,识别异常状态。实验证明,该方法的漏检率在1%以内。In order to achieve high-precision monitoring of battery current requirements,this paper proposes a monitoring method for abnormal output current status of lithium iron phosphate batteries in power applications.Using current sensors,the output current signal of lithium iron phosphate batteries are collected and converted.Using extended Kalman filtering technology,noise reduction and normalization are achieved,thereby correcting signal errors,extracting abnormal current characteristics,and identifying abnormal states.Experimental results have shown that the undetected rate of the proposed method is within 1%.

关 键 词：磷酸铁锂电池 输出电流 异常状态 扩展卡尔曼滤波技术 归一化 异常特征 

分 类 号：TM912[电气工程—电力电子与电力传动]