Energy generating system with integrated energy generator and energy storage

Patent metadata

Field	Value
Publication number	US-10938323-B2
Application number	US-201916358872-A
Country	US
Kind code	B2
Filing date	Mar 20, 2019
Priority date	Apr 4, 2018
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

Disclosed is an energy generating system having an integrated energy generator and energy storage. According to one embodiment, energy generation and storage may be performed using external kinetic energy, and output from a generator device may be improved using a voltage stored in the energy storage. A storage efficiency of the energy storage may be further increased via the improved output from the generator device. Further, the energy generator and energy storage may be integrated with each other to improve a space utilization.

First claim

What is claimed is:

1. An energy generating system having an integrated energy generator and energy storage, wherein the system includes:
a first electrode:
a first triboelectric layer, where the first electrode is disposed on one face of the first triboelectric layer;
a second triboelectric layer facing the first triboelectric layer and being spaced from the first triboelectric layer;
a second electrode disposed on a partial area of one face of the second triboelectric layer facing away from the first triboelectric layer;
a third electrode coplanar with the second electrode, wherein the third electrode disposed on another partial area of the one face of the second triboelectric layer, wherein the third electrode is spaced from the second electrode;
an energy storage layer disposed on the second electrode and the third electrode and facing the second triboelectric layer while being spaced from the second triboelectric layer; and
a fourth electrode disposed on the energy storage layer and facing the second electrode and the third electrode while being spaced from the second electrode and the third electrode,
wherein triboelectric ratings of the first and second triboelectric layers are different from each other, wherein a combination of the first triboelectric layer and the second triboelectric layer defines the energy generator,
wherein when the first and second triboelectric layers are brought into a contact state and then a noncontact state with each other, triboelectric energy is generated,
wherein the generated triboelectric energy is transferred via a rectifier to the third electrode and the fourth electrode and then is stored in the energy storage layer, thereby to generate a potential difference between the third electrode and the fourth electrode,
wherein the generated potential difference allows the energy generator to have an increased generated output.

2. The energy generating system of claim 1 , wherein the first electrode and the second electrode are respectively connected to first and second leads, wherein the first and second leads are connected to the rectifier.

3. The energy generating system of claim 2 , wherein the third electrode and the fourth electrode are respectively connected to third and fourth leads, wherein the third and fourth leads are connected to the rectifier.

4. The energy generating system of claim 1 , wherein an area occupied by the second electrode is substantially equal to an area occupied by the third electrode.

5. The energy generating system of claim 1 , wherein the first triboelectric layer is made of a metal and functions as the first electrode.

6. An energy generating system having an integrated energy generator and energy storage, wherein the system includes:
a first electrode:
a first triboelectric layer, where the first electrode is disposed on one face of the first triboelectric layer;
a second triboelectric layer facing the first triboelectric layer and being spaced from the first triboelectric layer;
a second electrode disposed on a partial area of one face of the second triboelectric layer facing away from the first triboelectric layer;
a third electrode coplanar with the second electrode, wherein the third electrode disposed on another partial area of the one face of the second triboelectric layer, wherein the third electrode is spaced from the second electrode;
an energy storage layer disposed on the second electrode and the third electrode and facing the second triboelectric layer while being spaced from the second triboelectric layer; and
a fourth electrode disposed on the energy storage layer and facing the second electrode and the third electrode while being spaced from the second electrode and the third electrode,
wherein the second electrode includes a first electrode pattern composed of a first bridge sub-electrode extending in one direction and a plurality of first finger sub-electrodes branched from the first bridge sub-electrode and extending perpendicularly thereto,
wherein the third electrode includes a second electrode pattern composed of a second bridge sub-electrode extending in one direction and a plurality of second finger sub-electrodes branched from the second bridge sub-electrode and extending perpendicularly thereto,
wherein the first bridge sub-electrode and the second bridge sub-electrode of the third electrode extend to be parallel to each other,
wherein the plurality of first finger sub-electrodes are interdigitated with the plurality of second finger sub-electrodes,
wherein triboelectric ratings of the first and second triboelectric layers are different from each other, wherein a combination of the first triboelectric layer and the second triboelectric layer defines the energy generator,
wherein when the first and second triboelectric layers are brought into a contact state and then a noncontact state with each other, triboelectric energy is generated,
wherein the generated triboelectric energy is transferred via a rectifier to the third electrode and the fourth electrode and then is stored in the energy storage layer, thereby to generate a potential difference between the third electrode and the fourth electrode,
wherein the generated potential difference allows the energy generator to have an increased generated output.

7. The energy generating system of claim 6 , wherein the first electrode and the second electrode are respectively connected to first and second leads, wherein the first and second leads are connected to the rectifier.

8. The energy generating system of claim 7 , wherein the third electrode and the fourth electrode are respectively connected to third and fourth leads, wherein the third and fourth leads are connected to the rectifier.

9. The energy generating system of claim 6 , wherein an area occupied by the second electrode is substantially equal to an area occupied by the third electrode.

10. The energy generating system of claim 6 , wherein the first triboelectric layer is made of a metal and functions as the first electrode.

11. The energy generating system of claim 6 , wherein a power generation and storage efficiency of the system is proportional to a number of interdigitatings between the first and second finger sub-electrodes.

12. An energy generating system having an integrated energy generator and energy storage, wherein the system includes:
a first electrode:
a first triboelectric layer, where the first electrode is disposed on one face of the first triboelectric layer;
a second triboelectric layer facing the first triboelectric layer and being spaced from the first triboelectric layer;
a second electrode disposed on a partial area of one face of the second triboelectric layer facing away from the first triboelectric layer;
a third electrode coplanar with the second electrode, wherein the third electrode disposed on another partial area of the one face of the second triboelectric layer, wherein the third electrode is spaced from the second electrode;
an energy storage layer disposed on the second electrode and the third electrode and facing the second triboelectric layer while being spaced from the second triboelectric layer; and
a fourth electrode disposed on the energy storage layer and facing the second electrode and the third electrode while being spaced from the second electrode and the third electrode,
wherein each of the second electrode and the third electrode extends to wind around a center in a continuous and diverging manner and in a polygonal or circular shape, wherein the second electrode and the third electrode are alternated with each other,
wherein triboelectric ratings of the first and second triboelectric layers are

Assignees

• Research & Business Found Sungkyunkwan Univ

Inventors

• Kim Sangwoo
• Kim Jihye
• Ryu Hanjun
• KWAK Sungsoo
• YOON Hongjoon

Classifications

• H02N1/04 Primary

  Friction generators · CPC title