Transmission of power and data for contactless dynamic charging
The major drawback of the battery charging in a electric vehicle is the use of plug-in charging devices. The aim of this paper is to propose a wireless battery charging method, in addition to power transfer, data related to battery status or vehicle ID code, etc. can be mutually transferred between the grid and vehicle. This work applies inductive power transfer (IPT) to complete the charging system. The proposed charging system can monitor the operating status on the secondary side at all times. It can also adjust charging current depending on the monitoring voltage or curent of battery; furthermore, the propsoed charging system can stop charging if any contingency, such as overvoltage or overcurrent, occurs. Therefore, the proposed charging system maintains an efficient and safely charging operaiton.