AMPG device for generation of electrical energy from vibrations, an AMPG device assemby, and a method to optimize the generation of said electrical energy

• US 8,304,937 B2
• Filed: 12/19/2007
• Issued: 11/06/2012
• Est. Priority Date: 12/21/2006
• Status: Active Grant

• Current Assignee: Revibe Energy AB
• Original Assignee: Saab AB
• Inventors: Erichsen, Dan, Cederwall, Per
• Primary Examiner(s): Leung, Quyen
• Assistant Examiner(s): KENERLY, TERRANCE L
• Application Number:
  US12/003,045
• Publication Number:
  US 20080174188A1
• Time in Patent Office: 1,784 Days
• Field of Search: 310/29, 310/36, 310/328, 310/330, 731/465, 731/468, 340/445, 340/447
• US Class Current: 310/36
• CPC Class Codes: H02K 35/02 with moving magnets and stationary coil systems

Abstract

An AMPG device for generation of electrical energy, including a bobbin, at least one magnet, and at least one spring member. The magnet is arranged to be movable together with the spring member. The device is arranged so that when exposed to an acceleration component in a possible path of mobility of the first magnet, the first magnet will, due to its association with the spring member, move in an oscillating manner in relation to the bobbin, so as to generate electrical energy. The device is arranged to at a limiting position of the mobile magnet'"'"'s path of mobility a spring member with an equal or higher spring constant than the remainder portions of the magnet'"'"'s mobile path acting on the magnet. An AMPG device assembly includes several AMPG devices. A method to optimize the electrical output of the device adapts the device to the frequencies appearing in the application where it shall be used.

Claims

1. An accumulating motion pulse generator device for generation of electrical energy, comprising,

three bobbins arranged in a row, wherein a central bobbin does not include a core and bobbins arranged on opposite sides of the central bobbin each include a core,

at least one magnet, and

at least one first spring member, wherein said at least one magnet is arranged to be movable together with said at least one first spring member, wherein said device is arranged so that when exposed to an acceleration component in a possible path of mobility of said at least one magnet, said at least one magnet will due to an association with said at least one first spring member arranged to move along an arcuate path in an oscillating manner in relation to said bobbins, so as to generate electrical energy, and

a second spring member at a limiting position of said path of mobility of the at least one magnet, for limiting said path of mobility.

2. The accumulating motion pulse generator device according to claim 1, wherein the second spring member has an equal or higher spring constant than the spring constant of the first spring member.

3. The accumulating motion pulse generator device according to claim 1, wherein said at least one magnet comprises Neodymium.

4. The accumulating motion pulse generator device according to claim 1, wherein said second spring member comprises a helical spring.

5. The accumulating motion pulse generator device according to claim 1, wherein said second spring member comprises a plate spring.

6. The accumulating motion pulse generator device according to claim 1, wherein said second spring member comprises a cloth.

7. The accumulating motion pulse generator device according to claim 6, wherein said cloth comprises a rubber cloth.

8. The accumulating motion pulse generator device according to claim 1, wherein said second spring member comprises second magnets, with reversed magnetic field to each other so as to act as a spring.

9. The accumulating motion pulse generator device according to claim 8, wherein said second magnets comprises Neodymium.

10. The accumulating motion pulse generator device according to claim 1, wherein said first spring member comprises a spiral spring.

11. The accumulating motion pulse generator device according to claim 10, wherein said second spring member comprises a plate spring member comprised in said first spring.

12. The accumulating motion pulse generator device according to claim 1, wherein said second spring member comprises a combination of second magnets and mechanical springs.

13. The accumulating motion pulse generator device according to claim 1, wherein the outer shape of the accumulating motion pulse generator device is arranged so that said accumulating motion pulse generator device is mountable in a standard holder for a battery for use in a standard battery demanding application.

14. The accumulating motion pulse generator device according to claim 13, wherein an outer shell of the accumulating motion pulse generator device comprises a high friction material.

15. The accumulating motion pulse generator device according to claim 14, wherein the outer shell comprises elastomer.

16. The accumulating motion pulse generator device according to claim 14, wherein the outer shell comprises rubber.

17. The accumulating motion pulse generator device according to claim 1, wherein the device is optimized for collection of acceleration components in its transversal direction by comprising a rotor with an eccentric mass balance, said rotor comprises said first magnet.

18. The accumulating motion pulse generator device according to 1, wherein the first spring member is a spiral spring associated with said rotor.

19. The accumulating motion pulse generator device according to claim 1, wherein the first spring member comprises a pair of spiral springs, oriented towards each other in opposite direction.

20. The accumulating motion pulse generator device according to claim 1, wherein the device is optimized for collection of acceleration components in a longitudinal direction of the device, by associating said at least one magnet with a spring member of helical type allowing said at least one magnet to move close to said three bobbins in the longitudinal direction of said device.

21. The accumulating motion pulse generator device according to claim 1, wherein the cores are arranged to guide the changing magnetic field through the coil in the bobbin.

22. The accumulating motion pulse generator device according to claim 21, wherein the cores are laminated.

23. The accumulating motion pulse generator device according to claim 21, wherein the core comprises μ

-metal.

24. The accumulating motion pulse generator device according to claim 1, wherein the device includes three magnets mounted close to each other with essentially the reversed magnetic field direction so as to provide for achieving a quick change of magnetic field, when the magnets with reversed magnetic fields pass a gap in the core which passes through the bobbin.

25. An accumulating motion pulse generator device according to claim 24, the magnets are mounted close to each other at equally distances between each other, with alternating magnetic field directions.

26. The accumulating motion pulse generator device according to claim 1, wherein the device comprises three magnets arranged in a row and having reversed magnetic field direction.

27. The accumulating motion pulse generator device according to claim 26, wherein the magnets are arranged in an arc.

28. The accumulating motion pulse generator device according to claim 1, wherein the bobbins are arranged in an arc.

29. The accumulating motion pulse generator device according to claim 1, wherein the cores comprise μ

-metal.

30. A printed circuit board, comprising:

at least one accumulating motion pulse generator device comprising three bobbins arranged in a row, wherein a central bobbin does not include a core and bobbins arranged on opposite sides of the central bobbin each include a core, at least one magnet, and at least one first spring member, wherein said at least one magnet is arranged to be movable together with said at least one first spring member, wherein said device is arranged so that when exposed to an acceleration component in a possible path of mobility of said at least one magnet, said at least one magnet will due to an association with said at least one first spring member arranged to move along an arcuate path in an oscillating manner in relation to said bobbins, so as to generate electrical energy, and a second spring member at a limiting position of said path of mobility of the at least one magnet, for limiting said path of mobility.

31. An accumulating motion pulse generator device assembly comprising

at least two of the accumulating motion pulse generator devices each comprising three bobbins arranged in a row, wherein a central bobbin does not include a core and bobbins arranged on opposite sides of the central bobbin each include a core, at least one magnet, and at least one first spring member, wherein said at least one magnet is arranged to be movable together with said at least one first spring member, wherein said device is arranged so that when exposed to an acceleration component in a possible path of mobility of said at least one magnet, said at least one magnet will due to an association with said at least one first spring member arranged to move along an arcuate path in an oscillating manner in relation to said bobbins, so as to generate electrical energy, and a second spring member at a limiting position of said path of mobility of the at least one magnet, for limiting said path of mobility, wherein the accumulating motion pulse generator devices are mounted angularly displaced relative to each other, whereby the accumulating motion pulse generator device assembly is able to collect acceleration components in more than one direction.