WIRELESS POWER TRANSMISSION SYSTEM

Registre Brevet WIPO
Numéro d'application JP2019032283
Numéro de publication 2021/033236
Statut Délivré - en vigueur
Date de dépôt 2019-08-19
Date de publication 2021-02-25
Propriétaire OMRON CORPORATION (Japon)
Inventeur(s)
  • Hamana, Kentaro
  • Nosaka, Tetsuya
  • Nguyen, Manh Tai
  • Murai, Akito
  • Sugimoto, Yoshiki

Abrégé

This wireless power transmission device is provided with: a power transmission circuit for transmitting power for a load device to a wireless power receiving device; a signal transmission circuit for transmitting a control signal for the load device to the wireless power receiving device; a signal receiving circuit for acquiring an estimated value of a power receiving level indicating the level of power that is transmitted from the wireless power transmission device and received by the wireless power receiving device; and a control circuit. The control circuit periodically assigns, to each wireless power receiving device, a plurality of time slots for wirelessly transmitting power to the each wireless power receiving device from the wireless power transmission device. When the power receiving level becomes smaller than a threshold value in a first time slot assigned to a certain wireless power receiving device, the control circuit extends a second time slot assigned to the same wireless power receiving device and preceding or following the first time slot.

Classes IPC  ?

  • H02J 50/40 - Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
  • H02J 50/20 - Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
  • H02J 50/80 - Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices