Thermoelectric conversion energy acquisition device based on drop condensation and preparation method

Abstract

The invention provides a thermoelectric conversion energy acquisition device based on drop condensation and a preparation method. The thermoelectric conversion energy acquisition device comprises a cooling end, an upper polar plate, a lower polar plate, a heat transfer plate and a superhydrophobic wall surface, wherein the heat transfer plate is a metal polar plate with a super strong heat conduction ability, and the lower surface is connected with an outer waste heat source for transferring outer heat energy to liquid water on the upper surface of the heat transfer plate; the side wall and the top layer inner surface of the energy acquisition device adopt superhydrophobic material, water vapors evaporated on the heat transfer plate can be prevented from being condensed on the inner wall, the water vapors are concentrated to be evaporated on the upper polar plate of the top layer inner surface, and dielectric layers of the upper polar plate and the lower polar plate are placed in a vertical opposite mode. When drops condensed on the upper polar plate fall on the surfaces of the dielectric layers, charges on the interface where the drops and the dielectric layers are contacted are redistributed, an instantaneous potential difference between two ends of the inner electrode and the outer electrode is generated, and due to the potential difference, drop collision for power generation is realized, and external heat energy is converted into electric energy.

Description

technical field [0001] The field that the present invention relates to is a thermoelectric conversion energy collection device based on droplet condensation, which belongs to the field of energy collection technology. Background technique [0002] With the development of micro-electro-mechanical systems (MEMS) technology, emerging low-power wireless sensor devices or systems put forward new requirements for micro-power supplies, including portability, wireless remote, separation from redundant power lines, and cost considerations. Portable low-power environmental energy harvesting devices have attracted much attention because they can convert other forms of energy in the environment into electrical energy, and can be used as power sources for microdevices or systems. [0003] The reported energy conversion methods include piezoelectric, electromagnetic, electrostatic and other energy harvesting devices. Among them, the piezoelectric energy harvesting device generates electr...

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Problems solved by technology

Among them, the piezoelectric energy harvesting device generates electric energy through the piezoelectric effect, which increases the cost due to the need for special piezoelectric materials; the electromagnetic energy harvesting device converts energy such as external vibration into electric energy through an electromagnetic field, and the introduced electromagnetic field may cause Interference with the wireless communication of the device or system; and the electrostatic energy harvesting device requires an external power supply to generate the original voltage difference across the energy conversion capacitor, which cannot meet the requirements of low-power devices in the remote field

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