Near-Field Coupling을 접목한 배터리 셀 밸런싱을 위한 송 · 수신기 코일 모델링

Abstract

This paper proposes a novel cell balancing method with using near-field coupling, which produces higher efficiency than passive type and faster than active type, which is the conventional battery cell balancing approach. As the importance of cell balancing has increased due to the increase in the proportion of renewable energy generation and the recycling of waste batteries, this approach is designed to meet the demand for high-capacity and high-power system. This paper focus on transmitter and receiver coil simulation models required to implement the proposed approach. it is confirmed that the schematic simulation model was sufficiently applicable. the measurement and 3D EM model are similar to the schematic model with only one inductor at the frequency we use. The measurement result of 2 times faster cell balancing with the coil designed with the proposed schematic model is presented