作者：洪晓斌, 李年智, 谢烁熳, 刘桂雄

作者单位：华南理工大学机械与汽车工程学院, 广东 广州 510640

关键词：视电阻率; 三维传感模型; 四电极伏安法; 动力电池

摘要：

针对动力电池安全性能在线检测发展趋势,提出基于电阻层析成像的动力电池内部视电阻率三维测量新技术,开发动力电池内部视电阻率三维测量装置。该装置采用双微控制器与PC机复合架构,控制产生增益可调的双极性脉冲电流,并通过三维传感阵列模型对电池进行激励测试。试验证明:测量装置具有良好的重复性,重复测量误差可控制在0.206以内,PC机软件成像效果稳定,可为动力电池内部局部温度异常预警、隔膜结构变形检测等在线安全性能检测研究奠定基础。

Design on three-dimensional apparent resistivity measuring device for power battery cell

HONG Xiaobin, LI Nianzhi, XIE Shuoman, LIU Guixiong

School of Mechanical Engineering, South China University of Technology, Guangzhou 510640, China

Abstract: Aiming at the development trend of on-line detection for power battery safety,a new technique of apparent resistivity measurement on power battery was investigated based on electrical resistance tomography(ERT),and a three-dimensional measuring device was developed. Based on the composite structures of double microcontrollers and PC,the device generated a bipolar pulse current with adjustable gain. The apparent resistivity measurements on battery surface were performed by a three-dimensional sensor array. The experimental results show that the device has a good repeatability with a mean square error under 0.206‰ and the inversion image can be reconstructed stably,which lay the foundation for local anomalous temperature monitoring,structural damage detection of ion exchange membrane and some other cell security applications.

Keywords: apparent resistivity; three-dimensional sensor model; four-electrode voltammetry; power battery

2015, 41(1): 61-65  收稿日期: 2014-5-18;收到修改稿日期: 2014-6-29

基金项目: 粤港关键领域重点突破项目(2012A090200005);广东省科技计划项目(2012B020314001);华南理工大学中央高校基本科研业务费资助滚动项目(2014ZG0016);佛山科技创新专项资金项目(2013GQ100145)

作者简介: 洪晓斌(1979-),男,广东揭阳市人,副教授,博士,研究方向为网络化测量技术及仪器、无损检测技术。

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