High Power Density Pulsating Power Electronics Systems for Fast Charging of Li-ion Batteries

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In numerous battery-powered systems, including mobile devices and automotive fast charging is highly desirable feature.However, existing fast charging system cause degradation of the battery negatively affecting its lifetime. Also, the modern batterycharging systems are usually bulky and/or inefficient. As such they are not well suited for integration in space and weightconstrained applications such as mobile and automotive.In most cases the main contributor to the overly large size of the chargers, which are based on power electronics converters, arereactive components of the converters (inductors and capacitors), where in mobile and automotive applications the inductors areoften the bulkiest components of the systems.The goal of this research is to develop a compact power supply that will be able to provide fast charging without negativelyaffecting the battery lifetime and will be able to fit into increasingly stringent volume and weight requirements. The supply will havea novel architecture. It will be based on hybrid power conversion concept, providing small volume and high power processingefficiency (providing high power density), and will be implementing a novel charging algorithm that provides fast charging withoutnegatively affecting battery life time, developed by GBattteries.