Electrostatic induction generation device and electrostatic induction generation apparatus having a movable electrode formed between a first fixed electrode substrate and a second fixed electrode substrate

Abstract

An electrostatic induction generation device comprising a first fixed electrode substrate having a first electret electrode, a second fixed electrode substrate having a second electret electrode, a movable electrode substrate having a movable electrode, a holding frame formed separately from the movable electrode, a first pair of electrode support beams and a second pair of electrode support beams connected with the movable electrode and the holding frame, and wherein the movable electrode substrate is formed between the first fixed electrode substrate and the second fixed electrode substrate, and the movable electrode is opposed to the first electret electrode and the second electret electrode.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This is a continuation application of U.S. patent application Ser. No. 13 / 214,538 filed Aug. 22, 2011 which claims priority to Japanese Patent Application No. 2010-185854 filed Aug. 23, 2010 all of which are expressly incorporated by reference herein in their entireties.BACKGROUND[0002]1. Technical Field[0003]The present invention relates to an electrostatic induction generation device and an electrostatic induction generation apparatus.[0004]2. Related Art[0005]In accordance with the recent environmental concerns, electrical power generation using natural energy such as electrical power generation using solar energy or wind energy has been starting to spread widely. However, both of the solar energy and the wind energy must depend on the conditions for installation, namely the environment such that the sunlight is not blocked or that the stable wind is blowing. In contrast thereto, a method of converting the environmental vibration into ...

AI Technical Summary

Benefits of technology

The invention is a device that can efficiently generate electrical power from external vibration. It uses a movable electrode that is supported by electrode support beams that prevent the electrode from moving in other directions. The device also includes a first fixed electrode substrate and a second fixed electrode substrate with electret electrodes that oppose each other, which increases the amount of static charge and improves the efficiency of power generation. Additionally, the device prevents displacement in the direction perpendicular to the vibration direction of the movable electrode, resulting in a highly efficient device with minimal conversion loss from vibration to electricity.

Problems solved by technology

In the electrical power generation using the electrostatic method, the charge held by the electret and the dielectric charge generated on the opposed electrode cause the Coulomb force in the attracting direction to act between electrodes to thereby make the electrodes opposed to each other with a small gap have contact with each other, which hinders the relative displacement or causes displacement (behavior) in a direction different from the relative displacement direction to thereby make the efficient electrical power generation difficult.

However, even in the device of Document 2, the contact between the guard and the electrode hinders the normal relative displacement between the electrodes to thereby make the electrical power generation unstable.

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