Magnetoelectric micro electric generator of axial magnetic field

Abstract

The invention discloses a magnetoelectric micro electric generator of an axial magnetic field. The magnetoelectric micro electric generator consists of an electric generator part and a power source part, wherein the electric generator part adopts a disc type permanent micro electric generator structure with a single rotor and a power source is a turbine; the electric generator part comprises an electric generator shell, an upper stator, a lower stator, a coil and a central shaft; the stator consists of a magnet yoke and a magnet; the upper stator and the lower stator are respectively arranged in the shell through an annular bump on the inner surface of the shell; the upper magnet yoke and the lower magnet yoke respectively serve as an upper cover plate and a lower cover plate of the electric generator and the axial structure size of the electric generator can be effectively reduced; the coil serving as an electric generator rotor is positioned between the upper stator and the lower stator and is connected with the central shaft; and the turbine drives the coil to rotate through central shaft. The electric generator has the advantages of simple structure, small volume, high power density and high impact resistance.

Description

technical field [0001] The invention relates to a magnetoelectric micro generator, in particular to an axial magnetic field magnetoelectric micro generator, belonging to the technical field of energy development. Background technique [0002] In recent years, micro-mechanical and electrical systems have developed rapidly, and the reduction in the volume of electromechanical systems requires the miniaturization of energy supply devices. Micro energy devices can be divided into two categories: micro chemical batteries and micro generators. The current main problem of micro-chemical batteries is that they carry limited energy, need to replenish energy regularly, and have poor self-sustaining power. The micro generator can actively obtain energy from the environment, which is a self-transducer, does not need to replenish energy regularly, and at the same time has no pollution itself, so it has a good development prospect. [0003] The disc-type permanent magnet synchronous sin...

AI Technical Summary

Problems solved by technology

At present, such micro-generators at home and abroad all use magnet yoke rotation, such as the axial-flow pneumatic micro-turbine power generation system designed by Imperial College London, the variable reluctance micro-generator designed by the University of California, Berkeley, and the French LEG The planar micro-generator designed by the research team of the United States, the micro-generator co-designed by the Georgia Institute of Technology and the Massachusetts Institute of Technology, this type of micro-generator is large in size, complex in structure, and low in conversion efficiency

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