Automotive battery packs typically contain hundreds of individual cells in a series/parallel configuration. Failure of electrical junctions between cells, caused by faults introduced during manufacturing or by deterioration during operation can lead to early pack failure, with significant cost and quality implications for OEMs.
This project aims to develop an electrical technique, based on time domain reflectometry (TDR), for the detection and localisation of electrical faults within a battery pack or module. TDR is a well-established technique in the power distribution and semiconductor industries, used to detect faults on high-voltage transmission lines and integrated circuit packages. In this project, we will adapt the technique to operate on smaller length scales (sub-cm), and parallel electrical architectures relevant to battery packs.
The project will involve the following: