A flywheel battery with double flywheel structure

Abstract

The invention discloses a flying wheel battery with a dual-flywheel structure. The exterior of the axial middle of a rotary shaft is coaxially sleeved with an axial winding structure with a gap; flying wheels, which are coaxially and fixedly arranged on the rotary shaft in a sleeving manner, are arranged on the left and right sides of the axial winding structure respectively; the two flying wheelsare symmetrically arranged left and right relative to the axial winding structure; bearingless permanent magnet motors, which are coaxially and fixedly arranged on the rotary shaft in a sleeving manner, are arranged on the left side of the left-side flying wheel and on the right side of the right-side flying wheel respectively; the two bearingless permanent magnet motors are symmetrically arranged left and right relative to the axial winding structure; 12 circular annular grooves are uniformly formed in the plate surfaces on the left and right sides of a circular plate iron core of the axialwinding structure in the circumferential direction; central cylinders are all wound with axial winding coils; inner and outer circular annular grooves are formed in the wheel surfaces on one sties ofthe flying wheels; annular permanent magnets are embedded in the corresponding circular annular grooves; by adopting one axial winding structure, the axial movement of the rotary shaft is limited; andcompared with a single-fly-wheel structured flying wheel battery with the same radius, the rotational inertia of the flying wheel battery with the dual-flywheel structure is two times of that of thesingle-fly-wheel structured flying wheel battery, so that the flying wheel battery with the dual-flywheel structure is higher in energy storage.

Description

technical field [0001] The invention relates to a magnetic levitation flywheel battery structure, which is suitable for fields such as space and military vehicles or as switching of uninterrupted power supplies. Background technique [0002] Flywheel battery is a new type of battery that breaks through the limitations of chemical batteries and utilizes physical energy storage. Utilizing the high quality of the flywheel so that it has a high moment of inertia, a large amount of kinetic energy can be stored and converted into electrical energy by the motor. Most traditional magnetic levitation flywheel batteries adopt a single flywheel structure, using two radial magnetic bearings and one axial magnetic bearing to provide levitation force, and charging and discharging are completed by two permanent magnet synchronous motors. Due to the large energy storage requirements of the flywheel battery, the flywheel needs a larger radius to increase its moment of inertia, which further...

AI Technical Summary

Problems solved by technology

Due to the large energy storage requirements of the flywheel battery, the flywheel needs a larger radius to increase its moment of inertia, which further increases the radial length of the flywheel battery. At the same time, two radial magnetic bearings and one axial magnetic bearing also occupy The large axial space makes it difficult to reduce the size of the flywheel battery

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