SPACE-DIVISION MULTIPLE POWER FEEDING AND COLLECTING APPARATUS

• US 20130154353A1
• Filed: 06/03/2011
• Published: 06/20/2013
• Est. Priority Date: 06/03/2010
• Status: Abandoned Application

• Current Assignee: Korea Advanced Institute of Science and Technology
• Original Assignee: Korea Advanced Institute of Science and Technology
• Inventors: Suh, Nam Pyo, Cho, Gyu Hyeong, Cho, Dong Ho, Rim, Chun Taek, Chang, Sun Heung, Huh, Jin, Lee, Sung Woo, Kim, Hyun Jae, Park, Chang Byung
• Application Number:
  US13/701,739
• Publication Number:
  US 20130154353A1
• Time in Patent Office: Days
• US Class Current: 307/9.1
• CPC Class Codes: B60L 2200/26 Rail vehicles
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2240/529 Current
• CPC Class Codes: B60L 5/005 without mechanical contact between the collector and the power supply line
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• CPC Class Codes: B60L 53/39 with position-responsive activation of primary coils
• 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 2310/40 The network being an on-board power network, i.e. within a vehicle
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• 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 10/72 Electric energy management in electromobility
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

The present invention relates to a space-division multiple power feeding and collecting apparatus, and more specifically to a space-division multiple power feeding and collecting apparatus which is composed of multiple power feeding type lines using phase division, time division or frequency division and the like along a traveling direction of a moving body and receives electric power therethrough so as to feed the electric power to and to collect electric power from various moving bodies of a vehicle, and underwater moving body or a robot and the like in a non-contact manner. The present invention can obtain a constant output voltage through the minimization of a regular variation of an output voltage in the traveling direction of the moving body by applying the space-division multiple feeding method along the travelling direction of the moving body on an I-shaped feeding line, and increases an air gap by improving the mean output power to be transmitted to a secondary side and reducing the leakage flux generated between adjacent magnetic poles.

Claims

1. A phase division multiple power feeding apparatus that feeds electric power to a moving body using magnetic induction which comprises

A power feeding core which has multiple magnetic poles arranged at regular intervals along the traveling direction of a moving body;

A certain number (‘

α

’

) of feeding line pairs in which along the traveling direction of a moving body, electric currents flow countercurrent to the traveling direction of a moving body, and

An inverter which controls electric currents flowing in each of said feeding line pairs;

In each of feeding line pairs, electric currents of different phase flow, and each feeding line pair is arranged so that the N and S poles are alternately generated at every α

out of a certain number of magnetic poles (‘

magnetic pole group’

), and the N-S pole pairs generated by each feeding line pair are not overlapped each other.

2. A phase division multiple power feeding apparatus as claim 1, wherein in each of α

sequential magnetic pole groups along the traveling direction of a moving body the N poles of different phases generated by each of the feeding line pairs from the 1^st feeding line pair to the α

th feeding line pair can be sequentially generated, and

In each of the next α

sequent magnetic pole groups, the S poles of different phases generated by each of the feeding line pairs from the 1^st feeding line pair to the α

th feeding line pair can be sequentially generated.

3. A phase division multiple power feeding apparatus as claim 2, wherein the pole groups composing said α

N poles and said α

S poles can be arranged in a line along the traveling direction of a moving body on a feeding line.

4. A phase division multiple power feeding apparatus as claim 2, wherein the magnetic pole groups composing said α

N poles and said α

S poles can be sequentially arranged along the traveling direction of a moving body on α

parallel lines on a feeding line.

5. A phase division multiple power feeding apparatus as claim 1, wherein said magnetic pole groups can be composed of one magnetic pole or α

magnetic poles.

6. A phase division multiple power feeding apparatus as claim 1, wherein if the number of said feeding line pairs is 2, a desirable phase difference of electric currents flowing in each of said feeding line pairs is 90 degree.

7. A phase division multiple power feeding apparatus as claim 1, wherein if the number of said feeding line pairs is 3, a desirable phase difference of electric current flowing in each of said feeding line pairs is 120 degree.

8. A phase division multiple power feeding apparatus as claim 1, wherein for said magnetic poles, the cross section perpendicular to the traveling direction of a moving body may be I-shaped and the width perpendicular to the traveling direction of a moving body may be less than half of the length of the traveling direction of a moving body.

9. A phase division multiple power feeding apparatus as claim 1, wherein for said magnetic poles, the cross section viewed from the road may be I-shaped and the width perpendicular to the traveling direction of a moving body may be greater than twice of the length of the traveling direction of a moving body.

10. A phase division multiple power feeding apparatus that feeds electric power to a moving body using magnetic induction which comprises

A power feeding core which have multiple magnetic poles arranged at regular intervals along the traveling direction of a moving body,

Three feeding lines in which along the traveling direction of a moving body, electric current of phase difference of 120 degree flows, and an inverter which controls electric current flowing in each of said feeding lines;

Each of feeding lines is arranged so that the N and S poles are alternately generated at every 3 out of a certain number of magnetic poles (‘

magnetic pole group’

), and the N-S pole pairs generated by each of feeding lines are not overlapped each other.

11. A time division multiple power feeding apparatus that feeds electric power to an electric vehicle using magnetic induction of the present invention which comprises

A power feeding core which has multiple magnetic poles arranged at regular intervals along the traveling direction of a moving body,

A certain number (‘

b’

) of feeding line pairs in which along the traveling direction of a moving body, electric current flows countercurrent to the traveling direction of a moving body, and an inverter which controls electric current flowing in each of said feeding line pairs in which electric current flows in different time zones;

Each of feeding line pairs is arranged so that the N and S poles are alternately generated at every b magnetic poles.

12. A time division multiple power feeding apparatus as claim 11, wherein said inverter can control the switch corresponding to each feeding line pair so that the N and S poles are generated at the magnetic pole corresponding to the location of a traveling vehicle.

13. A time division multiple power feeding apparatus as claim 12, wherein said magnetic poles are arranged in a line on the feeding line along the traveling direction of a moving body.

14. A time division multiple power feeding apparatus as claim 12, wherein said magnetic poles are arranged on the feeding line along b rows parallel to the traveling direction of a moving body (‘

magnetic pole row’

), and the magnetic pole row in which said N and S poles are generated may move sequentially from the 1st to the bth magnetic pole row along the traveling of a vehicle.

15. A time division multiple power feeding apparatus as claim 11, wherein for said magnetic poles, the cross section perpendicular to the traveling direction of a moving body may be I-shaped and the width perpendicular to the traveling direction of a moving body may be less than half of the length of the traveling direction of a moving body.

16. A time division multiple power feeding apparatus as claim 11, wherein for said magnetic poles, the cross section viewed from the road may be I-shaped and the width perpendicular to the traveling direction of a moving body may be more than twice of the length of the traveling direction of a moving body.

17. A frequency division multiple power feeding apparatus that feeds electric power to an electric vehicle using magnetic induction of the present invention which comprises

A power feeding core which have multiple magnetic poles arranged at regular intervals along the traveling direction of a moving body,

A certain number (‘

c’

) of feeding line pairs in which along the traveling direction of a moving body, electric current flows countercurrent to the traveling direction of a moving body, and

An inverter which controls electric current flowing in each of said feeding line pairs in which electric current of different frequency flows;

Each of feeding line pairs is arranged so that the N and S poles are alternately generated at every c magnetic pole and the N-S pole pairs generated by each feeding line pairs are not overlapped each other.

18. A frequency division multiple power feeding apparatus as claim 17, wherein in each of c sequential magnetic poles along the traveling direction of a moving body, the N poles of different frequencies generated by each of feeding line pairs from the 1st to the cth feeding line pair can be sequentially generated, and in each of the next c sequent magnetic poles, the S poles of different frequencies generated by each of feeding line pairs from the 1st to the cth feeding line pair can be sequentially generated.

19. A frequency division multiple power feeding apparatus as claim 18, wherein the magnetic poles composing said c N poles and said c S poles can be arranged in a line along the traveling direction of a moving body.

20. A frequency division multiple power feeding apparatus as claim 18, wherein the magnetic poles composing said c N poles and said S poles can be sequentially arranged along the traveling direction of a moving body on c parallel lines on a feeding line.

21. A frequency division multiple power feeding apparatus as claim 17, wherein for said magnetic poles, the cross section perpendicular to the traveling direction of a moving body may be I-shaped and the width perpendicular to the traveling direction of a moving body may be less than half of the length of the traveling direction of a moving body.

22. A frequency division multiple power feeding apparatus as claim 17, wherein for said magnetic poles, the cross section viewed from the road may be I-shaped and the width perpendicular to the traveling direction of a moving body may be more than twice of the length of the traveling direction of a moving body.

23. A power collecting apparatus which collects electric power from the space division multiple power feeding apparatus which feeds electric power to a moving body using magnetic induction which comprises

A power collecting core which is installed at the bottom of a moving body with space from the power feeding apparatus, and

A power collecting coil which is wound around said power collecting core so that electric current induced by the power feeding apparatus may flow, and the power collecting coil comprises more than two pairs so as to multiple collect electric power.

24. A multiple power collecting apparatus as claim 23, wherein said power feeding apparatus can generate more than two magnetic fields of different phases using phase division multiplexing, and in each of the pairs of said power collecting coil, electric current of different phase can be induced by said magnetic fields.

25. A multiple power collecting apparatus as claim 23, wherein said power feeding apparatus can generate more than two magnetic fields of different frequencies using frequency division multiplexing, and in each of the pairs of said power collecting coil, electric current of different frequency can be induced by said magnetic field.