Wireless power transmission system for free-position wireless charging of multiple devices
US10141105B2 · kind B2 · utility
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1References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2017 |
| Grant date | Nov 27, 2018 |
| Priority date | — |
| Expiry date | Jun 15, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2027/2809
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a near-field wireless power transfer system capable of having a constant efficiency regardless of a charging position of a receiver by only using a simple impedance matching circuit without using a separate existing complex adaptive impedance matching circuit or a control circuit, and simultaneously transmitting power without having difficulty with impedance matching even for wireless power transmission to a plurality of electronic devices by applying a structure having a uniform mutual inductance between a wireless power transmitter and a wireless power receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.