18484885. WIRELESS POWER SYSTEMS WITH FOREIGN OBJECT DETECTION simplified abstract (Apple Inc.)
WIRELESS POWER SYSTEMS WITH FOREIGN OBJECT DETECTION
Organization Name
Inventor(s)
Adam L. Schwartz of Redwood City CA (US)
Niloofar Rashidi Mehrabadi of Santa Clara CA (US)
Hossein Sepahvand of Santa Clara CA (US)
WIRELESS POWER SYSTEMS WITH FOREIGN OBJECT DETECTION - A simplified explanation of the abstract
This abstract first appeared for US patent application 18484885 titled 'WIRELESS POWER SYSTEMS WITH FOREIGN OBJECT DETECTION
Simplified Explanation
The abstract of this patent application describes a wireless power system that consists of a wireless power transmitting device and a wireless power receiving device. The transmitting device uses a coil to send wireless power signals to the receiving device. The transmitting device is able to detect the presence of external objects, such as foreign objects or other wireless power receiving devices, using quality-factor measurements. Wireless communications are used to differentiate between foreign objects and legitimate receiving devices. The quality-factor measurements can be adjusted for aging and temperature effects using temperature measurements and compensation factors based on frequency and measured resistance.
- Wireless power system with transmitting and receiving devices
- Transmitting device uses a coil to send wireless power signals
- Detects the presence of external objects using quality-factor measurements
- Can differentiate between foreign objects and legitimate receiving devices
- Uses wireless communications for discrimination
- Quality-factor measurements can be adjusted for aging and temperature effects
- Temperature measurements and compensation factors are used for adjustment
Potential Applications
- Wireless charging systems for electronic devices
- Smart home automation systems
- Electric vehicle charging infrastructure
- Industrial automation and robotics
Problems Solved
- Accidental charging of foreign objects
- Efficient and safe wireless power transmission
- Discrimination between legitimate receiving devices and foreign objects
- Compensation for aging and temperature effects
Benefits
- Convenient and hassle-free wireless charging
- Improved safety by preventing accidental charging of foreign objects
- Efficient use of wireless power transmission
- Reliable discrimination between legitimate devices and foreign objects
- Enhanced performance through compensation for aging and temperature effects
Original Abstract Submitted
A wireless power system has a wireless power transmitting device and a wireless power receiving device. The wireless power transmitting device uses a wireless power transmitting coil to transmit wireless power signals to the wireless power receiving device. The wireless power transmitting device determines whether an external object is present. The external object may be a foreign object such as a coin or paperclip or may be a wireless power receiving device. External objects are detected using quality-factor measurements. Wireless communications are used to discriminate between foreign objects and wireless power receiving devices. Quality factor measurements may be compensated for aging and temperature effects using temperature measurements and compensation factors based on frequency and measured resistance.
