Power receiving device, wireless power-supplying system, and cover unit

• US 9,866,037 B2
• Filed: 08/19/2015
• Issued: 01/09/2018
• Est. Priority Date: 05/14/2013
• Status: Active Grant

• Current Assignee: IHI Corporation
• Original Assignee: IHI Corporation
• Inventors: Maekawa, Yuji
• Primary Examiner(s): Skibinski, Thomas
• Application Number:
  US14/829,813
• Publication Number:
  US 20150357833A1
• Time in Patent Office: 874 Days
• Field of Search: 307104, 307 91, 307 101, 307 107, 320103, 320104, 320107-111
• CPC Class Codes: B60L 2270/147 electro magnetic [EMI]
• CPC Class Codes: B60L 53/122 Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
• CPC Class Codes: B60L 53/124 Detection or removal of foreign bodies
• CPC Class Codes: B60L 53/126 Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
• CPC Class Codes: B60L 53/305 Communication interfaces
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction
• CPC Class Codes: H02J 7/0049 Detection of fully charged condition
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

A wireless power-supplying system includes a power-supplying coil disposed on a ground contact surface side, a power-receiving coil mounted on a movable body and to which power is wirelessly supplied from the power-supplying coil, a cover member provided in the movable body and configured to be opened and closed and cover the power-receiving coil in a closed state, and a bag configured to expand and contract and to open and close the cover member.

Claims

1. A power-receiving device comprising:

a power-receiving coil mounted on a movable body and to which power is wirelessly supplied from a power-supplying coil;

a cover member provided in the movable body and configured to be opened and closed and cover the power-receiving coil in a closed state; and

a bag configured to expand and contract and to open and close the cover member.

2. The power-receiving device according to claim 1, wherein a plurality of cover members are provided.

3. The power-receiving device according to claim 2, wherein the bag is provided for each cover member.

4. The power-receiving device according to claim 3, wherein a biasing means configured to bias the cover member so that the cover member is in the closed state is provided in each of the plurality of cover members.

5. The power-receiving device according to claim 2, wherein a biasing means configured to bias the cover member so that the cover member is in the closed state is provided in each of the plurality of cover members.

6. The power-receiving device according to claim 5,

wherein the biasing means provided in each of the plurality of cover members is a spring, and

wherein a spring constant of each spring is different.

7. The power-receiving device according to claim 2, wherein each of the plurality of cover members has approximately an isosceles triangle shape.

8. The power-receiving device according to claim 1, comprising:

a biasing means configured to bias the cover member so that the cover member is in the closed state.

9. The power-receiving device according to claim 1, wherein the cover member is adhered to the bag.

10. The power-receiving device according to claim 1, wherein the bag is formed of a rubber material having elasticity.

11. The power-receiving device according to claim 1, wherein the bag is formed of a predetermined metal except for a portion corresponding to a magnetic path between the power-supplying coil and the power-receiving coil.

12. The power-receiving device according to claim 1, wherein the cover member is formed of a harder metal than the power-receiving coil.

13. A wireless power-supplying system comprising:

a power-supplying coil disposed on a ground contact surface;

a power-receiving coil mounted on a movable body and to which power is wirelessly supplied from the power-supplying coil;

a cover member provided in the movable body and configured to be opened and closed and cover the power-receiving coil in a closed state; and

a bag configured to expand and contract and to open and close the cover member.

14. A cover unit for a power-receiving coil mounted on a movable body and to which power is wirelessly supplied from a power-supplying coil, the cover unit comprising:

a cover member provided in the movable body and configured to be opened and closed and cover the power-receiving coil in a closed state; and

a bag configured to expand and contract and to open and close the cover member.