System and method for wireless vehicle battery charging

A mobile platform for wirelessly charging an in-vehicle rechargeable battery by a charge receiver in an electric vehicle (EV) that is located in a stationary location on a surface, the mobile platform comprising:

• a charge transmitter for generating a field for a wireless charging by a wireless energy transfer to the charge receiver in the field;
• a movement sensor that provides an output in response to a movement of the platform;
• multiple wheels that are independently-controlled for moving the platform on the surface;
• a drive chain for powering the multiple wheels for propelling and steering the platform on the surface;
• a wireless transmitter for transmitting data to, and a wireless receiver for receiving data from, a wireless network;
• a memory storing software, and a processor coupled to the memory for executing the software;
• a rechargeable electric power storage for electrically powering the charge transmitter, the movement sensor, the memory, the drive chain, the wireless transmitter, the wireless receiver, and the processor;
• and
• a housing sized and shaped to fit under the EV,
• wherein the rechargeable electric power storage, the charge transmitter, the movement sensor, the memory, the processor, the drive chain, the wireless transmitter, the wireless receiver, or any combination thereof, are attached to, or mounted in, the housing,
• wherein the processor is coupled to the movement sensor and to the drive chain for controlling the propelling and steering to automatically travel to the EV location in response to a receiving of a message over the wireless network that is indicative of the EV stationary location,
• wherein the platform is further configured for localizing the housing under the EV using a feedback-based closed control loop of the wireless energy transfer of the in-vehicle rechargeable battery by the charge transmitter, and
• wherein the platform is further configured for vertically moving the charge transmitter upwards or downwards for optimizing of the wireless energy transfer between the platform and the EV.