Composite type rotation energy collector

Abstract

The invention relates to an energy collector. The energy collector comprises a base, an electromagnetic coil fixed in the base, a circular-disk-shaped stator magnet fixed in the center of the base, afriction sheet fixing ring fixed on the base, at least one friction sheet unit fixed on the inner side surface of the friction sheet fixing ring, a circular-disk-shaped rotor magnet, and an annular friction sheet fixed on the circular-disk-shaped rotor magnet; wherein the bottom of the circular-disk-shaped rotor magnet is in contact with the electromagnetic coil; the circular-disk-shaped rotor magnet is attracted and caught up by the circular-disk-shaped stator magnet; in addition, the outer surface of the circular-disk-shaped rotor magnet and the outer surface of the circular-disk-shaped stator magnet are tangential; and the annular friction sheet and the friction sheet are prepared from materials of different polarities. The energy collector is simple in structure and high in electric energy output efficiency.

Description

technical field [0001] The present invention relates to energy harvesting and in particular to energy harvesters. Background technique [0002] Wireless sensor network technology has been widely used in military, intelligent transportation, environmental monitoring and so on. The complexity of the sensor node deployment environment and the particularity of the actual application requirements determine that the node power supply cannot be powered by the normal power system, and the battery power supply method has problems such as high cost, short life, and troublesome replacement. There are a variety of abundant energy sources in the natural environment. Energy harvesting technology is a technology that obtains energy from the external environment and converts it into electrical energy. It is a potential way to solve the power supply problem of wireless sensor nodes. Collecting environmental kinetic energy and converting it into electrical energy has the advantages of being ...

AI Technical Summary

Problems solved by technology

[0003] However, because the vibration sources in the environment generally have low frequencies and wide frequency bands, and the randomness of vibration amplitude, frequency and direction is large, the current resonant vibration energy harvesters often have a narrow operating frequency band and a single vibration direction, so the common problems It is suitable for narrow vibration range and low output power density, which is difficult to meet the self-power supply requirements of wireless sensor nodes

[0005] At present, vibration energy harvesting devices generally have high operating frequency (greater than 10Hz), and have a narrow operating frequency band and a single vibration direction, and poor environmental adaptability

The power output of the device is low in a low-frequency vibration environment less than 10Hz, and the output of a single-mechanism energy harvester is limited, which cannot meet the power supply requirements of low-power sensor nodes

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