Wireless power system with efficiency prediction
US10978921B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2020 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | Aug 14, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/79
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A wireless power system has a wireless power transmitting device and a wireless power receiving device. During digital ping operations while the transmitting device and receiving device negotiate to establish a power level to use during normal operation, low-power wireless power signals may be transmitted to the receiving device from the wireless power transmitting device. Information gathered during the digital ping may be evaluated using a wireless-power-transmission-efficiency-to-digital-ping-rectifier-output-voltage relationship and using a normal-operation-wireless-power-transmission-efficiency-to-digital-ping-wireless-power-transmission-efficiency relationship to predict a wireless power transmission efficiency that would be experienced if the system were to enter normal operation. Based on this efficiency prediction, the system can issue alerts and can decide whether or not to enter normal operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.