Flexible and Efficient 6.78MHz High Power Wireless Charging Modules Using Controlled Magnetic Resonance Power Architecture

Flexible wireless charging can bring appealing user experiences to a variety of applications from TRW air pods, smart phones, robots, AGVs to EVs. Traditional magnetic resonance (MR) technology is the architecture widely discussed for flexible wireless charging so far, but its performance is hindered by poor efficiency, low power capability and high system cost. Quanten has developed a modular technology using proprietary Controlled Magnetic Resonance (CMR) power architecture to address these shortcomings and enhance user experiences in higher power designs under a wide range of coupling variation between the RX and TX windings and in a wide range of power and voltage levels. Simulation and testing show that system efficiency can reach close to 90% in typical smart phone and AGV applications, and 95% in EV charging applications, while the benefit of spatial freedom is still maintained.