# US 11,909,337 B2 · Dielectric elastomer power generation system

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- Number: US 11,909,337 B2
- Document ID: US11909337B2
- Status: Granted
- Kind: B2
- Application number: 17/264,845
- Filed: 2019-07-10
- Published: 2021-09-23
- Granted: 2024-02-20
- Earliest claimed: 2018-08-09
- Assignees: Selki Chiba; Mikio Waki; Zeon Corporation
- Applicants: Seiki Chiba; Mikio Waki; Zeon Corporation
- Inventors: Seiki Chiba; Mikio Waki; Makoto Takeshita; Mitsugu Uejima
- Web page: https://patentgrep.com/patent/US11909337B2

## CPC

- H02N 1/08: with conductive charge carrier, i.e. capacitor machines
- H02N 2/181: {Circuits; Control arrangements or methods}
- H10N 30/30: with mechanical input and electrical output, e.g. functioning as generators or sensors
- H10N 30/857: Macromolecular compositions
- H02N: ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H10N: ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR

## Abstract

A dielectric elastomer power generation system A1 includes a dielectric elastomer power generation element 3 having a dielectric elastomer layer 31 and a pair of electrode layers 32 sandwiching the dielectric elastomer layer 31. The dielectric elastomer power generation system A1 further includes a piezoelectric element 1 and a multi-stage voltage multiplier/rectifier circuit 2 that boosts and rectifies the voltage generated by the piezoelectric element 1 and applies the resulting voltage as an initial voltage to the dielectric elastomer power generation element 3. This configuration enables the system to be constructed at a lower cost and increase the amount of power generation.

## Claims

### Claim 1

A dielectric elastomer power generation system comprising:
a dielectric elastomer power generation element including a dielectric elastomer layer and a pair of electrodes sandwiching the dielectric elastomer layer;
a piezoelectric element;
a multi-stage voltage multiplier/rectifier circuit that boosts and rectifies a voltage generated by the piezoelectric element and applies a resulting voltage to the dielectric elastomer power generation element as initial charge;
a power storage circuit that receives electric power generated by the dielectric elastomer power generation element, and
a switching unit that can perform control of an electrical connection between the dielectric elastomer power generation element and the multi-stage voltage multiplier/rectifier circuit, and an electrical connection between the dielectric elastomer power generation element and the power storage circuit based on a vibration state of the piezoelectric element or a stretched or contracted state of the dielectric elastomer power generation element.

### Claim 2 (depends on 1)

The dielectric elastomer power generation system according to claim 1, wherein the multi-stage voltage multiplier/rectifier circuit comprises a Cockcroft-Walton circuit.