ONE-TO-MANY WIRELESS ENERGY TRANSMISSION SYSTEM

• US 20130049480A1
• Filed: 08/31/2011
• Published: 02/28/2013
• Est. Priority Date: 08/31/2011
• Status: Active Grant

• Current Assignee: Alpha Microelectronics Corp.
• Original Assignee: Alpha Microelectronics Corp.
• Inventors: Tang, Chi Chiu
• Granted Patent: US 8,823,217 B2
• Time in Patent Office: Days
• 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 a resonance transmission coil and at least a resonance receiving coil;

wherein said resonance transmission coil having a resonance frequency, and using a characteristic dimension to indicate a work range, said work range having to cover an area or volume larger than or equal to total area or volume of each of said at least a resonance receiving coil;

magnetic field density within said work range of said resonance transmission coil showing good uniformity so that each of said at least a resonance receiving coil, regardless of location within said work range of said resonance transmission coil, able to uniformly receive a minimum required energy to function normally and without interfering each other.

2. The system as claimed in claim 1, wherein each of said resonance receiving coil is further connected in parallel with a resonance frequency control element and a power detection circuit is connected between said resonance receiving coil and a subsequent circuit;

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

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

4. The system as claimed in claim 1, further comprising at least a controllable off tune relay coil, said 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 characteristic dimension and resonance frequency of said resonance transmission coil so that each of said at least a resonance receiving coil able to receive sufficient transmitted energy uniformly within said work range of said resonance transmission coil.

5. The system as claimed in claim 4, 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.

6. The system as claimed in claim 4, wherein center point of said controllable off tune relay coil overlaps center point of said resonance transmission coil, said controllable off tune relay coil and said resonance transmission coil have similar shape, and the distance from said controllable off tune relay coil to said center point is half of distance from said resonance transmission coil to said center point.

7. The system as claimed in claim 4, wherein said controllable off tune relay coil has high Q-value.

8. The system as claimed in claim 1, wherein said system is applied to a two-dimensional game platform with wireless energy transmission system.

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

10. The system as claimed in claim 8, wherein said two-dimensional game platform with wireless energy transmission system is a jigsaw puzzle.

11. The system as claimed in claim 8, wherein said two-dimensional game platform with wireless energy transmission system is a card game platform.

12. The system as claimed in claim 8, wherein said two-dimensional game platform with wireless energy transmission system is a monopoly board game.

13. The system as claimed in claim 1, wherein said system is applied to a three-dimensional game platform with wireless energy transmission system.

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

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

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