Miniature electric generator utilizing rotary electret

A technology of micro-generators and electrets, which is applied in the direction of induction generators, etc., can solve the problems that the air flow cannot respond and occupies a large area.

Active Publication Date: 2018-02-27
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Wind turbines are a common device that collects air flow energy, but wind turbines cannot respond to small air flows and occupy a large area

Method used

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  • Miniature electric generator utilizing rotary electret
  • Miniature electric generator utilizing rotary electret
  • Miniature electric generator utilizing rotary electret

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as Figure 1-4 Shown, this example is based on a kind of miniature generator that utilizes rotating electret, and it comprises electret, pyrolytic graphite rotor, magnet and housing 4 and cover plate 10, is provided with electret assembly 2, magnet inside the housing Structure 3. A cover plate 10 is provided on the upper end of the housing. The collection electrode assembly 1 is composed of a cover plate 10 and a collection electrode 11. A collection electrode 11 is provided on the inside of the cover plate 10. The collection electrode assembly 1 is generally circular. It includes at least two collecting electrodes, and a gap is set between the collecting electrode assembly 1 and the electret assembly 2 . The electret assembly 2 is composed of a pyrolytic graphite rotor 22, an insulating layer, and an electret layer 21 stacked from bottom to top. The electret assembly 2 is suspended directly above the magnet structure 3, and the magnet structure 3 is selected as N...

Embodiment 2

[0029]This example is based on a micro-generator that utilizes a rotating electret, including a housing, an electret assembly 2, a magnet structure 3, and a cover plate 10 are arranged on the upper end of the housing, and the collection electrode assembly 1 is covered by the cover plate. 10 and a collection electrode 11, the inside of the cover plate 10 is provided with a collection electrode 11, the collection electrode assembly 1 is circular as a whole, and it includes at least two collection electrodes, between the collection electrode assembly 1 and the electret assembly 2 There is a gap, the electret assembly 2 is composed of pyrolytic graphite rotor 22, insulating layer, and electret layer 21 from bottom to top, the electret assembly 2 is suspended directly above the magnet structure, and the magnet structure 3 is selected The brand is N35 NdFeB magnet, the magnet structure includes an inner magnet and an outer ring magnet, the diameter of the outer ring magnet is 25mm, t...

Embodiment 3

[0034] This example is based on a micro-generator utilizing a rotating electret, comprising a housing, an electret assembly 2, a magnet structure 3, and a cover plate 10 are arranged on the upper end of the housing 4 inside the housing, and the collection electrode assembly 1 is covered by a cover. plate 10 and collection electrodes 11, the inside of the cover plate 10 is provided with a collection electrode 11, the collection electrode assembly 1 is circular as a whole, and it includes at least two collection electrodes, between the collection electrode assembly 1 and the electret assembly 2 There is a gap between them. The electret component 2 is composed of a pyrolytic graphite rotor 22, an insulating layer, and an electret layer 21 from bottom to top. The electret component 1 is suspended directly above the magnet structure 3, and the magnet structure 3 is selected as N35. NdFeB magnets, the magnet structure 3 includes an inner magnet and an outer ring magnet, the diameter...

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PUM

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Abstract

The invention discloses a miniature electric generator utilizing a rotary electret. The miniature electric generator comprises a sampling electrode assembly, an electret assembly, a magnet assembly and a shell. The sampling electrode assembly is composed of a sampling electrode and an insulating cover plate; the electret assembly is composed of electret thin film and a pyrolytic graphite rotor, and the electret thin film is attached to blades of the pyrolytic graphite rotor; the magnet assembly is embedded by an annular magnet and a cylindrical magnet; the shell is provided with air holes. Thediamagnetism of pyrolytic graphite is utilized, the pyrolytic graphite rotor suspends above the magnet assembly, the blades of the pyrolytic graphite rotor are provided with the electret thin film, the rotor is pushed to rotate through flowing of air flow, when the rotor rotates, the relative areas of the electret and the sampling electrode are changed, and therefore the charge on the sampling electrode is changed.

Description

technical field [0001] The present invention relates to the technical field of micro-motors, in particular to a micro-generator using a rotating electret, which can respond to air flow, thereby realizing energy collection, converting energy distributed in the environment into electrical energy, and providing a A new way of energy harvesting. Background technique [0002] With the continuous growth of the world population and the continuous consumption of oil resources, the problem of energy shortage has increasingly become the focus of attention of the whole world. Compared with the energy contained in nature, petrochemical energy is only a part of energy, and many energy sources are still unused, such as solar energy, mechanical vibration energy, biochemical reaction energy, thermal energy, and air flow energy. Wind turbines are a common device that collects air flow energy, but wind turbines cannot respond to small air flows and occupy a large area. In addition, in addit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N1/08
Inventor 苏宇锋张坤段智勇郭丹李霞聂惠娟张振宇丁建桥
Owner ZHENGZHOU UNIV
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