Charger

Patent metadata

Field	Value
Publication number	US-12244154-B2
Application number	US-202318124281-A
Country	US
Kind code	B2
Filing date	Mar 21, 2023
Priority date	Mar 29, 2022
Publication date	Mar 4, 2025
Grant date	Mar 4, 2025

Abstract

A charger includes a power receiving unit, a power storage unit, and a power transmission unit. The power receiving unit is configured to receive, through wireless power supply via radio waves, power transmitted from a power transmitting device disposed in a vehicle. The power storage unit is configured to be supplied and charged with the power received by the power receiving unit. The power transmission unit is configured to transmit, through wireless power supply via electromagnetic induction, the power stored in the power storage unit to an electrical device that is to be charged.

First claim

The invention claimed is:

1. A charger comprising:
a power receiving unit configured to receive, through wireless power supply via radio waves, power transmitted from a power transmitting device disposed in a vehicle;
a power storage unit configured to be supplied and charged with the power received by the power receiving unit; and
a power transmission unit configured to transmit, through wireless power supply via electromagnetic induction, the power stored in the power storage unit to an electrical device that is to be charged, wherein
the power transmission unit is prohibited from transmitting the power stored in the power transmission unit to the electrical device when a remaining amount of the power is less than or equal to a predetermined low-amount determination value, and
the power transmission unit is configured to transmit, through wireless power supply via electromagnetic induction, the power received by the power receiving unit to the electrical device when the remaining amount is less than or equal to the low-amount determination value and the power receiving unit is receiving the power transmitted from the power transmitting device.

2. The charger according to claim 1 , wherein the power transmission unit is attached to a vehicle on-board component disposed in a passenger compartment.

3. The charger according to claim 1 , wherein the power receiving unit is prohibited from receiving the power transmitted from the power transmitting device when a remaining amount of the power stored in the power receiving unit is greater than or equal to a predetermined full-amount determination value.

4. The charger according to claim 1 , further comprising a physical switch configured to switch between a state in which power transmission from the power transmission unit to the electrical device is permitted and a state in which the power transmission is prohibited.

Assignees

• Toyoda Gosei Kk

Inventors

• Abe Teppei
• Fuki Shinichiro
• Sakai Tomokazu
• Takeda Shigeo
• Tokuyama Yuki

Classifications

• H02J7/90

  Regulation of charging or discharging current or voltage · CPC title

• Y02T10/70

  Energy storage systems for electromobility, e.g. batteries · CPC title

• H02J50/005

  Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices · CPC title

• B60R16/02

  electric {constitutive elements} · CPC title

• H02J50/20

  using microwaves or radio frequency waves · CPC title