Electret Self-Powered Wearable Devices

Abstract

The invention provides an electret self-power generating wearable device, which comprises outer strip-shaped elastic bands, inner strip-shaped elastic bands, electrets thin films, outer electrodes andinner electrodes, wherein the inner strip-shaped elastic bands and the outer strip-shaped elastic bands are arranged oppositely to together form a wearable device carrier, and the middle of the carrier is provided with a cavity; the electret thin films are fixedly arranged in the cavity; the outer electrode is arranged on the outer strip-shaped elastic band and is opposite to one surface of the electret thin film; and the inner electrode is arranged on the inner strip-shaped elastic band and is opposite to the other surface of the electret thin film. Along with movement of the wearable device, the outer strip-shaped elastic bands and / or the inner strip-shaped elastic bands are deformed, the distances and / or the relative positions between the electret thin films and the outer electrodes and / or the inner electrodes change, the induced electric field intensity between the electret thin films and the outer electrodes and the inner electrodes changes, and mechanical energy is thus converted into electrical energy. Effective conversion from mechanical energy to electrical energy is realized, and the conversion efficiency between voltage, current and energy is greatly improved.

Description

technical field [0001] The invention relates to the field of wearable smart devices, in particular to an electret self-generating wearable device. Background technique [0002] Wearable devices, such as bracelets, can be worn on the wrist for decoration and aesthetics, and are common accessories worn by the human body. In daily life, the movement of human arms and legs consumes mechanical energy all the time, especially in the process of human walking and running. If a smart wearable device converts this consumed mechanical energy into electrical energy for conversion and utilization, it will be energy-saving. Transformation has great practical application value. In addition, the disadvantage of conventional active charging is that you need to find a charging source, or a socket, or a mobile power supply. [0003] In addition, existing wearable devices generate electricity mainly based on piezoelectric principles, temperature difference principles, and electromagnetic prin...

AI Technical Summary

Problems solved by technology

In addition, the disadvantage of conventional active charging is that you need to find a charging source, or a socket, or a mobile power supply

[0003] In addition, the existing wearable devices generate electricity mainly based on piezoelectric principles, temperature difference principles, and electromagnetic principles, but due to the disadvantages of low power generation voltage and low current, it is not easy to be used by wearable sensor devices

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