Wireless power transfer system

Patent metadata

Field	Value
Publication number	US-11337280-B2
Application number	US-201716612489-A
Country	US
Kind code	B2
Filing date	Jul 13, 2017
Priority date	Jul 13, 2017
Publication date	May 17, 2022
Grant date	May 17, 2022

Abstract

A wireless power transfer system includes an induction heating cooking apparatus including a heating coil that produces a high-frequency magnetic field, a power reception device including a power reception coil that receives power from the heating coil, a first communication device provided on the power reception device to transmit a communication signal, a second communication device provided above the induction heating cooking apparatus to receive the communication signal from the first communication device, and a notification unit that indicates whether the power reception coil is located within a predetermined region that is set in advance with respect to the heating coil, when the second communication device receives the communication signal from the first communication device.

First claim

The invention claimed is:

1. A wireless power transfer system comprising:
an induction heating cooking apparatus including a heating coil configured to produce a high-frequency magnetic field;
a power reception device including a power reception coil configured to receive power from the heating coil;
a first communication device provided on the power reception device, and configured to transmit a communication signal;
a second communication device provided above the induction heating cooking apparatus, and configured to receive the communication signal from the first communication device; and
a notification unit configured to indicate whether the power reception coil is located within a predetermined region that is set in advance with respect to the heating coil, when the second communication device receives the communication signal from the first communication device.

2. The wireless power transfer system of claim 1 , comprising
a position detection unit,
wherein the second communication device includes a plurality of receiving units, and
wherein the position detection unit is configured to cause, when a predetermined one of the plurality of receiving units receives the communication signal, the notification unit to indicate that the power reception coil is located within the predetermined region.

3. The wireless power transfer system of claim 2 ,
wherein the plurality of receiving units are a plurality of infrared sensors, and
wherein the first communication device transmits the communication signal upwardly, the communication signal being infrared radiation.

4. The wireless power transfer system of claim 2 , comprising:
a position indicating element provided on the power reception device, the position indicating element including a mark having a predetermined color or shape; and
an imaging device provided above the induction heating cooking apparatus, and configured to capture an image of the power reception device placed on the induction heating cooking apparatus,
wherein the position detection unit determines whether the power reception coil is located within the predetermined region set in advance with respect to the heating coil, based on a position of the position indicating element in the image captured by the imaging device, and
wherein the notification unit indicates a result of determination by the position detection unit.

5. The wireless power transfer system of claim 1 ,
wherein the induction heating cooking apparatus includes
a third communication device configured to communicate with the second communication device,
an inverter circuit configured to supply a high-frequency current to the heating coil, and
a controller configured to control the inverter circuit based on the communication signal transmitted from the first communication device and received by the third communication device from the second communication device.

6. The wireless power transfer system of claim 1 , comprising
a ventilation control device configured to control an operation of a ventilator provided above the induction heating cooking apparatus in accordance with the communication signal received by the second communication device from the first communication device.

7. The wireless power transfer system of claim 5 ,
wherein the power reception device includes an operating unit configured to perform an input operation for the power reception device,
wherein the first communication device transmits the communication signal, the communication signal including information on the input operation performed by the operating unit, and
wherein the controller controls an operation of the inverter circuit in accordance with the information on the input operation.

8. The wireless power transfer system of claim 6 ,
wherein the power reception device includes an operating unit configured to perform an input operation for the power reception device,
wherein the first communication device transmits the communication signal, the communication signal including information on the input operation performed by the operating unit, and
wherein the ventilation control device controls an operation of the ventilator in accordance with the information on the input operation.

9. A wireless power transfer system comprising:
an induction heating cooking apparatus including a heating coil configured to produce a high-frequency magnetic field;
a power reception device including a power reception coil configured to receive power from the heating coil;
a position indicating element provided on the power reception device, the position indicating element including a mark having a predetermined color or shape;
an imaging device provided above the induction heating cooking apparatus, and configured to capture an image of the power reception device placed on the induction heating cooking apparatus;
a position detection unit configured to determine whether the power reception coil is located within a predetermined region that is set in advance with respect to the heating coil, based on a position of the position indicating element in an image captured by the imaging device; and
a notification unit configured to indicate a result of determination by the position detection unit.

Assignees

• Mitsubishi Electric Corp

Inventors

• Bunya Jun
• Suga Ikuro
• Takeshita Miyuki
• Kuwano Hirohisa
• Asakura Ryota
• Kameoka Kazuhiro

Classifications

• H02J50/90

  involving detection or optimisation of position, e.g. alignment · CPC title

• H02J50/10

  using inductive coupling · CPC title

• H05B2213/06

  Cook-top or cookware capable of communicating with each other · CPC title

• H02J50/80

  involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices · CPC title

• H05B6/1236 Primary

  adapted to induce current in a coil to supply power to a device and electrical heating devices powered in this way · CPC title