An Airflow Energy Harvester Based on Anti-Magnetic Levitation

Abstract

The invention provides an anti-magnetic-suspension-based flowed energy harvester comprising a housing and a cover plate. The cover plate is arranged at the upper part of the housing; and an anti-magnetic-suspension system and induction coils are arranged in the housing. The anti-magnetic-suspension system consists of a lifting permanent magnet, an upper pyrolytic graphite plate, a magnet rotor, and a lower pyrolytic graphite plate that are arranged successively from top to bottom; the lifting permanent magnet is arranged below the cover plate; the magnet rotor is suspended between the upper pyrolytic graphite plate and the lower pyrolytic graphite plate freely; the magnetization direction of the lifting permanent magnet identical with that of the magnet rotor; and the induction coils are fixed at the upper pyrolytic graphite plate and the lower pyrolytic graphite plate. An air inlet hole and an exhaust vent that are opposite to each other are formed in the side wall of the housing; andthe magnet rotor is arranged between the air inlet hole and the exhaust vent. According to the invention, with the anti-magnetic-suspension technology, the magnet rotor is suspended between the pyrolytic graphite plates; and air pushes the magnet rotor to make rotation through the air inlet hole. When the magnet rotor rotates, magnetic fluxes in the induction coils change to generate alternatingcurrents, so that the flowed energy is transformed into electric energy.

Description

technical field [0001] The invention relates to the technical field of energy collection, in particular to an airflow energy harvester based on anti-magnetic levitation, which can convert the flow energy of airflow brought by a mobile device into electric energy to realize energy collection. Background technique [0002] With the rapid development of MEMS technology and wireless sensor networks, wireless sensor networks are used in multiple applications, such as environmental monitoring, medical remote diagnosis, military applications, and structural monitoring. At present, chemical batteries are still used in these wireless sensor networks to supply energy, but batteries have limited energy, short life, and pollution, which is not an ideal energy supply method. At present, there are various energy sources that can be developed and utilized in the environment, such as solar energy, RF energy, mechanical vibration energy, thermal energy, and air flow energy. A wind turbine i...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the technical problem that the existing technology cannot realize the flow conversion of low-speed airflow, the present invention proposes an airflow energy harvester based on anti-magnetic levitation, which can convert the flow energy of tiny airflow into electric energy, realize the collection of airflow energy, and can be used for microelectronic devices provide energy

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