WIRELESS POWER SUPPLY SYSTEM

• US 20160013664A1
• Filed: 09/18/2015
• Published: 01/14/2016
• Est. Priority Date: 05/10/2013
• Status: Active Grant

• Current Assignee: IHI Corporation
• Original Assignee: IHI Corporation
• Inventors: MAEKAWA, Yuji, NIIZUMA, Motonao
• Granted Patent: US 9,997,964 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60L 2200/32 Waterborne vessels
• 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 53/36 by positioning the vehicle
• CPC Class Codes: B60L 53/38 specially adapted for charging by inductive energy transfer
• CPC Class Codes: B60M 7/003 for vehicles using stored power (e.g. charging stations)
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/50 using additional energy repeaters between transmitting devices and receiving devices
• 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 50/90 involving detection or optimisation of position, e.g. alignment
• 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

Abstract

A wireless power supply system includes a power supply coil installed on the ground, an inner balloon in which a power supply coil is mounted and configured to expand and contract to adjust a vertical position of the power supply coil, and an outer balloon provided to cover both the power supply coil and the inner balloon and configured to expand to occupy a space between the power supply coil and a power receiving coil, and wirelessly supplies power from the power supply coil to the power receiving coil.

Claims

1. A wireless power supply system including a power supply coil disposed on the ground and configured to wirelessly supply power from the power supply coil to a power receiving coil disposed above the power supply coil, the wireless power supply system comprising:

a first bag on which the power supply coil is mounted and configured to expand or contract to adjust a vertical position of the power supply coil; and

a second bag provided to cover both the power supply coil and the first bag and configured to expand to occupy a space between the power supply coil and the power receiving coil.

2. The wireless power supply system according to claim 1, comprising:

a gas supply and exhaust apparatus configured to individually perform supply of a gas to the first bag, supply of the gas to the second bag, exhaust of the gas from the first bag, and exhaust of the gas from the second bag.

3. The wireless power supply system according to claim 2, wherein the gas supply and exhaust apparatus finely adjusts the vertical position of the power supply coil by finely adjusting an amount of the gas supplied to the first bag and an amount of the gas exhausted from the first bag.

4. The wireless power supply system according to claim 2, wherein the gas supply and exhaust apparatus starts the supply of the gas to the first bag after a start of the supply of the gas to the second bag when the first bag is expanded and starts the exhaust of the gas from the second bag after a start of the exhaust of the gas from the first bag when the first bag is contracted.

5. The wireless power supply system according to claim 1, comprising:

an auxiliary bag configured to abut a periphery of the first bag and expand or contract to adjust a position within a horizontal plane of the power supply coil.

6. The wireless power supply system according to claim 5, comprising:

a hold mechanism configured to hold the auxiliary bag in the ground when the first bag is contracted and cause the auxiliary bag held in the ground to appear on the ground when the first bag is expanded.

7. A wireless power supply system including a power supply apparatus having a power supply coil, a power receiving apparatus having a power receiving coil, and a relay coil positioned between the power supply coil and the power receiving coil, the wirelessly power supply system configured to wirelessly supply power from the power supply coil to the power receiving coil via the relay coil, the wireless power supply system comprising:

a first bag configured to support the relay coil and expand or contract to move the relay coil between the power supply coil and the power receiving coil; and

a gas supply means configured to supply a gas to the first bag.

8. The wireless power supply system according to claim 7, comprising:

a second bag configured to expand or contract between the power supply coil and the power receiving coil,

wherein the gas supply means supplies the gas to the second bag.

9. The wireless power supply system according to claim 7, comprising:

a third bag configured to expand or contract to move the relay coil in a direction orthogonal to a direction connecting the power supply coil and the power receiving coil,

wherein the gas supply means supplies the gas to the third bag.

10. The wireless power supply system according to claim 7,

wherein an inside of the first bag is divided when viewed in a direction connecting the power supply coil and the power receiving coil,

wherein the gas supply means individually supplies the gas to each division region of the first bag.

11. A wireless power supply system including a power supply apparatus having a power supply coil and a power receiving apparatus having a power receiving coil, the wireless power supply system configured to wirelessly supply power from the power supply coil to the power receiving coil, the wireless power supply system comprising:

a first bag configured to support the power supply coil and expand to move the power supply coil toward the power receiving coil;

a spacer supported by the power supply coil and configured to abut the power receiving apparatus and cause the power supply coil and the power receiving coil to be spaced at a distance between the power supply coil and the power receiving coil and disposed to face each other; and

a gas supply means configured to supply the gas to the first bag.

12. The wireless power supply system according to claim 11, wherein the spacer abuts a power receiving coil of the power receiving apparatus.

13. The wireless power supply system according to claim 11,

wherein the power receiving apparatus is a vehicle and has a base on which the power receiving coil is provided, and

wherein the spacer has a flat upper surface.

14. The wireless power supply system according to claim 13, wherein the power supply coil and the first bag are provided within a concave portion provided on a ground side of a place in which the vehicle is able to stop.

15. The wireless power supply system according to claim 14, further comprising:

a movement restricting member provided within the concave portion and configured to restrict movement of the power supply coil.

16. The wireless power supply system according to claim 11, wherein the spacer is detachable from the power supply coil.

17. A wireless power supply system including a power supply coil disposed on the ground and a power receiving coil mounted on a movable object and wirelessly supplied with power from the power supply coil, the wireless power supply system comprising:

a second bag provided on a ground side or a movable object side and configured to expand between the power supply coil and the power receiving coil when power is supplied; and

a magnetic material disposed in a magnetic path formed between the power supply coil and the power receiving coil inside the second bag that has expanded.

18. The wireless power supply system according to claim 17,

wherein the magnetic material includes a powder, and

wherein the wireless power supply system comprises:

a magnetic material storage unit disposed in the magnetic path when the second bag has expanded, the magnetic material storage configured to store the magnetic material; and

a magnetic material supply apparatus configured to supply the magnetic material to the magnetic material storage unit.

19. The wireless power supply system according to claim 18, comprising:

a retrieving means configured to retrieve the magnetic material stored in the magnetic material storage unit to the magnetic material supply apparatus.

20. The wireless power supply system according to claim 18, wherein the magnetic material storage unit includes a magnetic material storage bag configured to expand and contract together with the second bag.