Contactless Charging Apparatus Foreign Object Detection

The system performs preliminary authentication using IC cards before initiating the charging operation. The determination unit checks whether each placed object is a chargeable device by verifying its IC card, and only devices that pass authentication are included in the charging group. This preliminary identification prevents non-chargeable devices from causing heat generation while allowing multiple chargeable devices to be charged simultaneously.

The system continuously monitors the charging state and adjusts the charging groups dynamically. When a non-chargeable device is detected during authentication, the control unit excludes it from the charging group and notifies the user. This feedback mechanism ensures that only authenticated chargeable devices receive power, preventing heat generation while maintaining efficient parallel charging of compatible devices.

The system divides the placed objects into separate charging groups based on authentication results. Chargeable devices that pass IC card verification are placed in active charging groups, while non-chargeable devices are excluded and placed in a separate category. This segmentation allows the system to charge multiple compatible devices simultaneously while ignoring non-compatible objects, thus suppressing heat generation without reducing overall charging productivity.

The system performs authentication and identification actions for all placed objects, which may seem excessive, but this partial action (authenticating each object) enables the system to precisely identify which devices should be charged. By applying authentication to all objects rather than assuming all are chargeable, the system suppresses heat generation from non-chargeable devices while maintaining high productivity for authenticated chargeable devices.