Abstract
With the popularity of electric vehicles, the ever-increasing demand for high-capacity batteries highlights the need for monitoring the health status of batteries. In this article, we proposed a magnetic imaging technique (MIT) to investigate the health status of power batteries nondestructively. This technique is based on a magnetic sensor array, which consists of a 16-channel high-performance magnetoelectric sensor, and the noise equivalent magnetic induction (NEB) of each channel reaches 3–5 pT/Hz1/2@10 Hz. The distribution of the magnetic field is imaged by scanning the magnetic field variation of different positions on the surface. Therefore, the areas of magnetic anomalies are identified by distinguishing different magnetic field abnormal results. and it may be possible to classify the battery failure, so as to put forward suggestions on the use of the battery. This magnetic imaging method expands the application field of this high-performance magnetoelectric sensor and contributes to the battery’s safety monitoring. Meanwhile, it may also act as an important role in other nondestructive testing fields.
Highlights
With the extensive application of electric vehicles (EVs) in the world, power batteries, as a core component, determine the power performance and mileage of the car
The high energy density of these batteries leads to increasingly prominent safety problems [1–3]
This analysis method cannot directly and accurately reflect the defect location after the battery pack is connected in series or in parallel [4], which is inefficient for batch inspection of batteries
Summary
Rui Chen 1,2,† , Jie Jiao 1,† , Ziyun Chen 1,3 , Yuhang Wang 1 , Tingyu Deng 1 , Wenning Di 1 , Shunliang Zhu 4 , Mingguang Gong 4 , Li Lu 1, *, Xianyu Xie 4, * and Haosu Luo 1,2, *.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
