Current Detection and Energy Harvesting Integrated Magnetoelectric Sensor with Flexibility and Heat Resistance Based on Polylactide/VB₂ Composites and FeCoV

Abstract

contact sensors, such as current shunts, exist safety risk due to lacking of electrical isolation. The contactless sensors are isolated from the primary current, which gives them the advantages of high insulation safety and convenient measurement. Thus, they attract numerous research attentions in recent decades. Typical contactless current sensors include current transformers, optical current sensors, Hall sensors and magnetoresistive sensors. [3][4][5]

Contactless Magnetoelectric Sensor Based on PVDF-TrFE and Metglass Laminates for Lithium-Ion Battery Current and Vibration Monitoring

“…In the existing literature on magnetoelectric composite materials based on organic piezoelectric polymers, the output voltage of PLLA/VB 2 /FeCoV magnetoelectric composite materials is approximately 0.78 mV under a magnetic field of 1590 A m −1 / 60 Hz. 23 Comparison shows that under the same magnetic field intensity, the magnetoelectric performance of the PVDF TrFE/Metglass is about 2.5 times that of PLLA/VB 2 /FeCoV.…”

“…Traditionally, an adhesive layer is used as the transition layer to bond the magnetostrictive and piezoelectric components . However, considering the restrictions on deformations in both components, the adhesive layer is often selected with a low elastic modulus, resulting in significant loss during stress transmission . Efforts have been made to improve the interface coupling by enhancing the interfacial interaction and reducing the thickness of the adhesive layer, but the performance improvement is limited. , Therefore, it is necessary to eliminate the stress transmission loss attributed to the adhesive layer in order to further improve the performance of the magnetoelectric current sensors.…”