Active Li-ion Battery Charge Balancing System Based on Flyback Converter

Abstract

The paper deals with the design of an active battery charge balancing system for Li-ion batteries. The Li-ion batteries are sensitive to series connection and thus some sort of balancing system must be implemented in battery packs and modules. An active system for batteries balancing based on flyback converter is chosen to deal with this issue. In the first part of the paper a brief presentation of the issue and proposal of system solution is given along with simulation verification. The second part of the paper provides insight into a design together with a hardware and software solutions, mainly focusing on subsystems and initial choice of components. Finally, an experimental verification is conducted for presented design approval.