Wireless power transfer with in-band preamble monitoring and control

• Main Authors: KEPPLER MICHAEL, WALLEY JOHN, LE JIMMY
• Format: Patent
• Language: Chinese; English
• Published: 01.03.2024
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention relates to wireless power transfer with in-band preamble monitoring and control. A wireless power transfer device may include circuitry that may be coupled with a coil to transmit or receive a first signal providing wireless power through the coil. The first signal may be modulated with a second signal. A packet within any of the second signals may include a first bit associated with a preamble and a second bit associated with data. The apparatus may further include a controller to measure a time change in at least one of the first signal, a rectified version of the first signal, or the one or more second signals. The controller may further determine a threshold for distinguishing bits in the packet based on the temporal variation. The device may further demodulate the signal using the one or more thresholds to identify the preamble of the packet and extract the second bit associated with data from the packet when identifying the preamble of the packet. 本公开涉及具有带内前导码监测及控制的无线功率传送。一种无线功率传送装置可包含可与线圈