PIEZOELECTRIC POWER GENERATOR FOR FEEDING EMERGENCY POWER

• US 20120161583A1
• Filed: 03/29/2011
• Published: 06/28/2012
• Est. Priority Date: 12/23/2010
• Status: Active Grant

• Current Assignee: Korea Electronics Technology Institute (Government of South Korea)
• Original Assignee: Korea Electronics Technology Institute (Government of South Korea)
• Inventors: Lee, Hyeung-Gyu, Lee, Woo Sung, Kang, Hyung-Won, Han, Seung Ho, Yoo, Chan Sei, Park, Hwi Yeol
• Granted Patent: US 8,680,750 B2
• Time in Patent Office: Days
• US Class Current: 310/339
• CPC Class Codes: H02N 2/186 Vibration harvesters
• CPC Class Codes: H10N 30/30 with mechanical input and electrical output, e.g. functioning as generators or sensors

Abstract

A piezoelectric power generator for feeding emergency power, includes a frame; a fixing unit comprising a left fixing body coupled to an upper left side of the frame and a right fixing body coupled to an upper right part of the frame; a first piezoelectric body bonded to a right side of the left fixing body; a second piezoelectric body bonded to a left side of the right fixing body; and a vibration unit bonded between the first piezoelectric body and the second piezoelectric body and vibrating vertically.

Claims

1. A piezoelectric power generator for feeding emergency power, comprising:

a frame;

a fixing unit comprising a left fixing body coupled to an upper left side of the frame and a right fixing body coupled to an upper right part of the frame;

a first piezoelectric body bonded to a right side of the left fixing body;

a second piezoelectric body bonded to a left side of the right fixing body; and

a vibration unit bonded between the first piezoelectric body and the second piezoelectric body and vibrating vertically.

2. The piezoelectric power generator of claim 1, further comprising:

an elastic unit connected to a top part and a bottom part of the vibration unit with one end.

3. The piezoelectric power generator of claim 2, further comprising:

a mass connected to the other end of the elastic unit and disposed inside an upper part and a lower part of the frame respectively.

4. The piezoelectric power generator of claim 2, wherein the elastic unit is an elastic wire or a spring.

8. The piezoelectric power generator of claim 1, further comprising:

an electrode unit connected to the first piezoelectric body and the second piezoelectric body respectively.

9. The piezoelectric power generator of claim 1, wherein two or more piezoelectric power generators for feeding the emergency power are stacked by crossing at 90 degrees.

10. The piezoelectric power generator of claim 1, further comprising:

a case unit for covering an exterior of the piezoelectric power generators.

11. A portable electronic device with the piezoelectric power generators for feeding the emergency power of claim 1 mounted inside or outside, the device receiving at least part of power from the piezoelectric power generator.

5. A piezoelectric power generator for feeding emergency power, comprising:

a frame comprising an exterior unit and a partition unit projecting and extending from an upper part to an inner side of the exterior unit, and dividing an inner space;

a first piezoelectric body disposed between a left side of the exterior unit and a left side of the partition unit;

a second piezoelectric body disposed between a right side of the exterior unit and a right side of the partition unit; and

a vibration unit disposed to vertically vibrate inside the partition unit.

6. The piezoelectric power generator of claim 5, wherein one or more first piezoelectric bodies and second piezoelectric bodies are disposed.

7. The piezoelectric power generator of claim 5, wherein the vibration unit is fabricated with tungsten (W), gold (AU), or Bismuth (Bi).

12. The piezoelectric power generator of claim 5, further comprising:

an electrode unit connected to the first piezoelectric body and the second piezoelectric body respectively.

13. The piezoelectric power generator of claim 5, wherein two or more piezoelectric power generators for feeding the emergency power are stacked by crossing at 90 degrees.

14. The piezoelectric power generator of claim 5, further comprising:

a case unit for covering an exterior of the piezoelectric power generators.

15. A portable electronic device with the piezoelectric power generators for feeding the emergency power of claim 5 mounted inside or outside, the device receiving at least part of power from the piezoelectric power generator.