Patent · US Active

Multi-coil wireless charger

US11264823B2 · kind B2 · utility

0Cited by

12References

18Claims

0Family size

Assignee

NXP USA, Inc. · US

Inventors

Li Wang · Plano, US
Dechang Wang · Suzhou, CN
Dengyu Jiang · Suzhou, CN
Huan Mao · Suzhou, CN

Key dates

Filing date	Jun 25, 2019
Grant date	Mar 1, 2022
Priority date	—
Expiry date	Jan 30, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH02J50/80
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A wireless charger includes multiple transmitter coils, first and second drivers, and a controller. The transmitter coils are arranged close to and/or overlap with each other. The first driver is coupled with at least one of the transmitter coils to drive the transmitter coil to communicate with and/or provide power over a first channel to receiver devices. The second driver is coupled with at least another one of the transmitter coils to drive the transmitter coil to communicate with and/or provide power over a second channel to receiver devices. The controller is coupled with the first and second drivers and enables only one of the first and second drivers at a time during a first stage.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.