Drahtlose Stromübertragung

Details

Veröffentlichungs-Nr.

EP4757120

Anmeldetag

5. September 2023

Veröffentlichung

10. Juni 2026

Rechtsraum

EP

IPC

H02J50/12, H02J50/80H02J50/80(JOYE NEIL FRANCIS et al.)(KONINKL PHILIPS NV et al.)

Abstract

A wireless power system comprises a power receiver (105) receiving power from a power transmitter (101) which comprises an output resonance circuit comprising a transmitter coil (103) and a capacitor (303). A driver (301) generates a drive signal for the output resonance circuit to generate an inductive power transfer signal. A frequency determiner (313) provides a reduced load sensitivity operating frequency for the drive signal and a frequency controller (311) changes the operating frequency of the drive signal to the reduced load sensitivity operating frequency in response to receiving a load change message from the power receiver. A transmitter (309) transmits a load change acknowledge message to the power receiver (105) to indicate the change of frequency. The frequency controller (311) changes the operating frequency from the reduced load sensitivity operating frequency to a load dependent operating frequency in response to determining that the power receiver (105) has performed the load change.

Anmelder

Firma

Koninklijke Philips N.V.

Land

🇳🇱 Niederlande