Resonance-type non-contact power supply system, power-receiving-side device and power-transmission-side device

Patent metadata

Field	Value
Publication number	US-9299492-B2
Application number	US-201314046563-A
Country	US
Kind code	B2
Filing date	Oct 4, 2013
Priority date	Apr 22, 2011
Publication date	Mar 29, 2016
Grant date	Mar 29, 2016

Abstract

A resonance-type non-contact power supply system includes a power-transmission-side metal shield to cover an area around a primary coil and a primary resonance coil, and a power-receiving-side metal shield to cover an area around a secondary coil and a secondary resonance coil, and when charging is performed, the power-transmission-side metal shield and the power-receiving-side metal shield are connected with a case connector to be at the same potential.

First claim

What is claimed is:

1. A power-transmission-side device used in a resonance-type non-contact power supply system, which transmits electric power by a non-contact resonance effect from a power-transmission-side resonance coil part connected to a high frequency power supply by a coaxial cable to a power-receiving-side resonance coil part, the power-transmission-side device comprising:
a power-transmission-side shield part which is a good conductor and covers from outside to accommodate the power-transmission-side resonance coil part, and which is electrically connected to a housing of the high frequency power supply by an outer conductor of the coaxial cable, and
a case connecting part which electrically connects the power-transmission-side shield part to a power-receiving-side shield part which is a good conductor and covers from outside to accommodate the power-receiving-side resonance coil part so that a positional deviation between the power-transmission-side shield part and the power-receiving-side shield part can be absorbed.

2. The power-transmission-side device according to claim 1 , wherein the case connecting part is constructed to connect the power-transmission-side shield part and the power-receiving-side shield part when non-contact power supply is performed, and to be accommodated when the non-contact power supply is not performed.

3. A power-receiving-side device used in a resonance-type non-contact power supply system, which transmits electric power by a non-contact resonance effect from a power-transmission-side resonance coil part which is connected to a high frequency power supply to a power-receiving-side resonance coil part connected to a load device by a coaxial cable, the power-receiving-side device comprising:
a power-receiving-side shield part which is a good conductor and covers from outside to accommodate the power-receiving-side resonance coil part, and which is electrically connected to a housing of the load device by an outer conductor of the coaxial cable, and
a case connecting part which electrically connects the power-receiving-side shield part to a power-transmission-side shield part which is a good conductor and covers from outside to accommodate the power-transmission-side resonance coil part so that a positional deviation between the power-transmission-side shield part and the power-receiving-side shield part can be absorbed.

4. The power-receiving-side device according to claim 3 , wherein the case connecting part is constructed to electrically connect the power-receiving-side shield part and the power-transmission-side shield part when non-contact power supply is performed, and to be accommodated when the non-contact power supply is not performed.

5. A resonance-type non-contact power supply system that transmits electric power by a non-contact resonance effect from a power-transmission-side resonance coil part, which is connected to a high frequency power supply by a first coaxial cable, to a power-receiving-side resonance coil part, which is connected to a load device by a second coaxial cable, the system comprising:
a power-transmission-side shield part which is a good conductor and covers from outside to accommodate the power-transmission-side resonance coil part, and which is electrically connected to a housing of the high frequency power supply by an outer conductor of the first coaxial cable;
a power-receiving-side shield part which is a good conductor and covers from outside to accommodate the power-receiving-side resonance coil part, and which is electrically connected to a housing of the load device by an outer conductor of the second coaxial cable, and
a case connecting part which electrically connects the power-transmission-side shield part and the power-receiving-side shield part so that a positional deviation between the power-transmission-side shield part and the power-receiving-side shield part can be absorbed.

6. The resonance-type non-contact power supply system according to claim 5 , wherein the power-receiving-side shield part is provided with the case connecting part which is constructed to electrically connect the power-receiving-side shield part and the power-transmission-side shield part when non-contact power supply is performed, and to be accommodatable when the non-contact power supply is not performed.

7. The resonance-type non-contact power supply system according to claim 5 , wherein the power-transmission-side shield part is provided with the case connecting part which is constructed to electrically connect the power-receiving-side shield part and the power-transmission-side shield part when non-contact power supply is performed, and to be accommodatable when the non-contact power supply is not performed.

8. The resonance-type non-contact power supply system according to claim 6 , wherein the power-transmission-side shield part is provided with the case connecting part which is constructed to electrically connect the power-receiving-side shield part and the power-transmission-side shield part when non-contact power supply is performed, and to be accommodatable when the non-contact power supply is not performed.

Assignees

• Yazaki Corp

Inventors

• Nakahara Takahiro
• YANAGIDA You
• NGAHU Antony

Classifications

• B60L53/122

  Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil · CPC title

• H02J7/42

  with electronic devices having internal batteries, e.g. mobile phones · CPC title

• B60L53/30 Primary

  Constructional details of charging stations · CPC title

• Y02T90/14

  Plug-in electric vehicles · CPC title

• B60L53/12

  Inductive energy transfer · CPC title