A Real-time Non-contact Localization Method for Faulty Electric Energy Storage Components using Highly Sensitive Magnetometers

TL;DR

This paper introduces a real-time, non-contact method using highly sensitive magnetometers and beamforming algorithms to accurately locate faulty components in energy storage arrays without damaging them.

Contribution

It presents a novel non-contact, real-time localization technique for faulty energy storage components using magnetic signals and beamforming spatial filtering.

Findings

Achieved 0.72 mm localization accuracy for capacitors.

Achieved 1.60 mm localization accuracy for batteries.

Demonstrated effectiveness within an 80 mm x 80 mm imaging area.

Abstract

With the wide application of electric energy storage component arrays, such as battery arrays, capacitor arrays, inductor arrays, their potential safety risks have gradually drawn the public attention. However, existing technologies cannot meet the needs of non-contact and real-time diagnosis for faulty components inside these massive arrays. To solve this problem, this paper proposes a new method based on the beamforming spatial filtering algorithm to precisely locate the faulty components within the arrays in real-time. The method uses highly sensitive magnetometers to collect the magnetic signals from energy storage component arrays, without damaging or even contacting any component. The experimental results demonstrate the potential of the proposed method in securing energy storage component arrays. Within an imaging area of 80 mm $\times$ 80 mm, the one faulty component out of nine total components can be localized with an accuracy of 0.72 mm for capacitor arrays and 1.60 mm for battery arrays.