Composite type electric generator based on electromagnetism and friction principle

Abstract

The invention relates to the field of micro energy, in particular to a composite type electric generator based on an electromagnetism and friction principle. The composite type electric generator comprises a shell, a top mass block, a top permanent magnet, a friction layer, a metal coil and a bottom permanent magnet, wherein the top mass block, the top permanent magnet, the friction layer, the metal coil and the bottom permanent magnet are arranged in the shell from top to bottom. The shell is of a cylinder shape, the top mass block, the top permanent magnet, the friction layer, the metal coil and the bottom permanent magnet are all cylindrical, and a film wraps the metal coil. The composite type electric generator has the advantages that the composite type electric generator replaces a traditional battery to supply power for a lower-power-consumption electronic component, mutual advantage compensation of an electromagnetic generator and a friction type generator is achieved, energy conversion efficiency of the generator is improved, reliability is high, the separating speed is high, the structure of the component is simplified, and large-scale production is facilitated.

Description

technical field [0001] The invention relates to the field of micro energy, in particular to a compound generator based on the principle of electromagnetic and friction. Background technique [0002] In recent years, the world energy crisis has made the research and application of new energy increasingly urgent. Therefore, energy harvesting technology has received extensive attention. Energy harvesting technology is to collect energy in the environment and convert it into electrical energy for use. Devices for collecting solar energy and wind energy, such as solar cells and windmills, have been industrialized. In contrast, the existence of vibration energy in the environment is more stable and widely distributed. In 2012, the first nanogenerator based on the friction principle was successfully prepared and achieved high-performance output [Wang, Z.L. et al. Nano energy, vol.1, pp.328, 2012]. Subsequently, nanogenerators based on the friction principle developed rapidly, a...

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Problems solved by technology

However, the output current of the triboelectric nanogenerator is very small, generally in the microampere level, which cannot be applied in some occasions that require large currents.

In addition, the matching load of the triboelectric nanogenerator is too high, generally in the megohm level, and it cannot provide energy efficiently for devices with small internal resistance

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