US Patent Application 18224388. METHOD FOR DETECTING FOREIGN MATERIAL, AND APPARATUS AND SYSTEM THEREFOR simplified abstract
Contents
METHOD FOR DETECTING FOREIGN MATERIAL, AND APPARATUS AND SYSTEM THEREFOR
Organization Name
Inventor(s)
METHOD FOR DETECTING FOREIGN MATERIAL, AND APPARATUS AND SYSTEM THEREFOR - A simplified explanation of the abstract
This abstract first appeared for US patent application 18224388 titled 'METHOD FOR DETECTING FOREIGN MATERIAL, AND APPARATUS AND SYSTEM THEREFOR
Simplified Explanation
The patent application describes a method for transmitting power wirelessly from a transmitter to a receiver.
- The method involves transmitting sensing signals to the receiver to detect its presence.
- The transmission coils that receive a signal strength indicator from the receiver are identified.
- The transmission coil with the highest signal strength indicator is selected as the power transmission coil.
- A foreign object detection (FOD) status packet is received from the receiver, which includes information about the quality factor or peak frequency.
- Based on the FOD status packet, it is determined whether a foreign object is present in the charging area of the transmitter.
- A foreign object detection indicator is generated based on the determination and transmitted to the receiver.
Original Abstract Submitted
A power transmission method for a wireless power transmitter, the power transmission method including transmitting sequentially a plurality of sensing signals to a wireless power receiver through transmission coils to sense a presence of the wireless power receiver; identifying transmission coils that receives a signal strength indictor transmitted from the wireless power receiver in response to the plurality of sensing signals; selecting, as a power transmission coil, a transmission coil that receives a signal strength indicator having the largest amount or the largest value among the transmission coils, receiving, from a wireless power receiver, a foreign object detection (FOD) status packet including information on a reference quality factor or a reference peak frequency; determining whether a foreign object is present in a charging area of the wireless power transmitter based on the FOD status packet; and generating a foreign object detection indicator indicating whether the foreign object is present in the charging area of the wireless power transmitter based on a result of the determination and transmitting the generated foreign object detection indicator to the wireless power receiver.
