A spherical electret wave energy generating device

Abstract

The invention relates to a spherical electret wave energy power generation device. The spherical electret power generation device comprises bottom electrodes, counter electrodes, a core body, a shellbody and an internal circuit. The bottom electrodes and the counter electrodes are repeatedly folded in a cross way to form three-dimensional electric energy harvesting units. The core body and the shell body are connected by a plurality of three-dimensional electric energy harvesting units. The electric energy harvesting units are charged by means of electrode charging. When the spherical electret wave energy power generation device is under the impact of external low-frequency waves, the core body and the shell body produce relative displacement in space, and the three-dimensional electric energy harvesting units produce a continuous high voltage. The three-dimensional electric energy harvesting units are connected in series and pass through the internal circuit, and convert mechanical energy into electric energy. The spherical electret wave energy power generation device of the invention has the characteristics of low cost, small volume, convenient installation and high energy harvesting efficiency.

Description

technical field [0001] The invention belongs to the field of new energy, and in particular relates to a spherical electret wave energy power generation device. Background technique [0002] With the rapid economic growth and the decrease of non-renewable energy sources, the development of new energy sources has been paid more and more attention. The ocean covers more than 70% of the earth, which contains a lot of clean energy, such as: tidal energy, wave energy, ocean current energy, etc. Among them, wave energy is less limited by time, has a large energy flow density, and has a wide distribution area, which plays an important role in the development of ocean energy. For the offshore marine industry construction area, it consumes a lot of energy, but most of the conventional energy sources are far away, so wave energy has great advantages in coastal power supply. The traditional way of collecting wave energy is to use large-scale wave energy harvesting equipment to collect...

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Problems solved by technology

[0004] After searching the existing technology, it was found that in the patent No. "CN 103840700 A", entitled "A multi-layer high-power near-spherical nano-triboelectric generator and its application", a spherical generator based on triboelectric nano-power generation was reported. Generator, the multi-surface contact ball inside the generator can generate friction power in three-dimensional space, but due to the structure and power generation materials, the contact mode between the ball and the shell in three-dimensional space is point contact, which cannot effectively generate friction in all directions. efficient use of energy

Ping Cheng et al. in "Largely enhanced triboelectric nanogenerator efficient harvesting of water wave energy by soft contacted structure." (NanoEnergy 57:432-439) (Chinese title: "Largely enhanced triboelectric nanogenerator efficient harvesting of water wave energy by soft contacted structure." : Nanoenergy) reported a triboelectric nanogenerator based on triboelectrification and electrostatic inductive coupling. The triboelectric effect is generated through the sliding friction between the silicon rubber ball and the contact copper electrode, and positive and negative charges are brought into the two parts and then Electric energy is generated, but the silicone rubber ball of the structure in this paper can only produce triboelectric effect in one direction in the space. The contact area between the silicone rubber ball and the inner wall of the shell is small, and the ability to collect electric energy is limited, so it can only realize the real-time lighting of the LED.

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