One-to-many wireless energy transmission system

• US 8,823,217 B2
• Filed: 08/31/2011
• Issued: 09/02/2014
• Est. Priority Date: 08/31/2011
• Status: Active Grant

• Current Assignee: Alpha Microelectronics Corp.
• Original Assignee: Alpha Microelectronics Corp.
• Inventors: Tang, Chi Chiu
• Primary Examiner(s): Deberadinis, Robert L.
• Application Number:
  US13/223,309
• Publication Number:
  US 20130049480A1
• Time in Patent Office: 1,098 Days
• Field of Search: 307/104
• US Class Current: 307/104
• 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 50/50 using additional energy repeaters between transmitting devices and receiving devices
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices

Abstract

A one-to-many wireless energy transmission system is provided, including a resonance transmission coil and at least a resonance receiving coil, where the resonance transmission coil has a characteristic dimension covering the area or volume larger than or equal to the total area or volume of all of the at least a resonance receiving coil. The one-to-many wireless energy transmission system can further include at least a controllable off-tune relay coil, which is placed within the work range of the resonance transmission coil. The characteristic dimension, resonance frequency and placement location of the at least a controllable relay coil are adjusted in accordance with the characteristic dimension and resonance frequency of the resonance transmission coil so that each of the at least a resonance receiving coil can receive sufficient transmitted energy uniformly within work range of resonance transmission coil to operate normally without interference with each other.

Claims

1. A one-to-many wireless energy transmission system, comprising:

at least a resonance receiving coil; and

a resonance transmission coil having a resonance frequency and using a characteristic dimension to indicate a work range, said work range covering an area or volume larger than or equal to the total area or volume of each of said at least a resonance receiving coil, a magnetic field density within said work range of said resonance transmission coil having sufficient uniformity for each of said at least a resonance receiving coil to uniformly receive a minimum required energy to function normally without interfering each other regardless of locations within said work range;

wherein each of said at least a resonance receiving coil is further connected in parallel with a resonance frequency control element and an energy detection circuit is connected between the resonance receiving coil and a subsequent circuit;

said energy detection circuit receives a signal indicating said minimum required energy from said subsequent circuit and generates a feedback signal to control said resonance frequency control element to off-tune the resonance receiving coil so as to reduce resonance-receiving capability of the resonance receiving coil to only receive said minimum required energy to operate independently and not interfering with each other.

2. The system as claimed in claim 1, wherein said minimum required energy is the energy required to maintain said subsequent circuit to function normally.

3. A one-to-many wireless energy transmission system, comprising:

at least a resonance receiving coil;

a resonance transmission coil having a resonance frequency and using a characteristic dimension to indicate a work range, said work range covering an area or volume larger than or equal to the total area or volume of each of said at least a resonance receiving coil, a magnetic field density within said work range of said resonance transmission coil having sufficient uniformity for each of said at least a resonance receiving coil to uniformly receive a minimum required energy to function normally without interfering each other regardless of locations within said work range; and

at least a controllable relay coil being placed within said work range of said resonance transmission coil, and characteristic dimension, resonance frequency and placement location of said at least a controllable relay coil being adjusted in accordance with the characteristic dimension and resonance frequency of said resonance transmission coil so that each of said at least a resonance receiving coil is able to receive sufficient transmitted energy uniformly within said work range of said resonance transmission coil.

4. The system as claimed in claim 3, wherein said resonance frequency of said controllable off tune relay coil is close to and yet slightly off said resonance frequency of said resonance transmission coil, but not identical to said resonance frequency of said resonance transmission coil.

5. The system as claimed in claim 3, wherein a center point of said controllable off tune relay coil overlaps the center point of said resonance transmission coil, said controllable off tune relay coil and said resonance transmission coil have a similar shape, and a distance from said controllable off tune relay coil to said center point is half of the distance from said resonance transmission coil to said center point.

6. The system as claimed in claim 3, wherein said controllable off tune relay coil has a high Q-value.

7. The system as claimed in claim 3, wherein said system is applied to a two-dimensional game platform with wireless energy transmission system.

8. The system as claimed in claim 7, wherein said two-dimensional game platform with wireless energy transmission system is an international chess set.

9. The system as claimed in claim 7, wherein said two-dimensional game platform with wireless energy transmission system is a jigsaw puzzle.

10. The system as claimed in claim 7, wherein said two-dimensional game platform with wireless energy transmission system is a card game platform.

11. The system as claimed in claim 7, wherein said two-dimensional game platform with wireless energy transmission system is a monopoly board game.

12. The system as claimed in claim 3, wherein said system is applied to a three-dimensional game platform with wireless energy transmission system.

13. The system as claimed in claim 12, wherein said three-dimensional game platform with wireless energy transmission system is a jenga set.

14. The system as claimed in claim 12, wherein said three-dimensional game platform with wireless energy transmission system is a lego set.

15. The system as claimed in claim 12, wherein said three-dimensional game platform with wireless energy transmission system is a building block set.