Preliminary development of an Energy Logistics as a new wireless power transmission method

In recent years, various types of wireless power transmission method have been proposed. However, assuming the mobile devices in the living space as a target, the traditional methods seem to be ineffective. The only wide range transmission method based on electro-magnetic wave has the problem of the safety to humans, while the effective range of the other transmission methods are too short. Therefore, a new wireless power transmission method called Energy Logistics is proposed in this paper. The method realizes safe and wide range power transmission by the combination of mid-range energy coupling technique and energy delivery robot. The energy delivery works as a substitute for power cable between the power source and the mobile devices, while the energy coupling is used for connecting power source and energy delivery robot or energy delivery robot and mobile device. Basic characteristics of mid-range wireless charging for lithium-ion battery via magnetic resonance coupling is derived since it is the challenging task in the Energy Logistics. Furthermore, some approach for increasing the transmission efficiency together with realizing the suitable charging power and voltage is discussed.