A magnetic levitation flywheel battery for spherical electric vehicles

Abstract

The invention discloses a spherical electric vehicle magnetic suspension flywheel battery; an inner housing, a spherical stator, a spherical cavity rotor, two permanent magnets and two magnetic suspension spherical surface bearings are arranged in a vacuum cavity; the spherical stator is arranged in the right center of the flywheel housing; the spherical cavity rotor is arranged outside the spherical stator; the spherical cap shape inner housing having the same spherical core is arranged outside the spherical cavity rotor; the bottom opening of the inner housing is seamlessly fixedly connected with the first permanent magnet in a spherical cap shape; the inner housing and the spherical cavity rotor are fixedly connected through a rotor connector; the second permanent magnet in the spherical cap shape is arranged right below the first permanent magnet, and fixedly connected on the inner surface of the flywheel housing; the two magnetic suspension spherical surface bearings are arranged between the flywheel housing and the inner housing, fixedly connected on the inner wall of the flywheel housing, and two central shafts thereof are intersected. The spherical electric vehicle magnetic suspension flywheel battery can eliminate air friction losses on the flywheel, and can increase the gyro control moment scope, thus inhibiting the flywheel gyroscopic effect.

Description

technical field [0001] The invention relates to the structure of a flywheel battery (also called a flywheel energy storage device), in particular to a magnetic levitation flywheel battery for electric vehicles. Background technique [0002] A flywheel battery is a new type of mechanical energy storage device that uses a high-speed rotating flywheel to store energy in the form of kinetic energy. Compared with existing chemical batteries, flywheel batteries have many advantages such as high energy storage density, long service life, high energy conversion efficiency, no pollution, and short charging time. At present, flywheel batteries are widely used in electric vehicles, aerospace, uninterruptible power supply (UPS) and other fields. [0003] The gyro effect caused by the high-speed rotating flywheel battery rotor encountering external interference is a technical problem restricting the development of flywheel batteries. This problem is mainly reflected in the topology of t...

AI Technical Summary

Problems solved by technology

In addition, the generators / motors used in traditional flywheel batteries usually use permanent magnet motors or asynchronous motors. These conventional motors have the characteristics of low reliability in high-speed operation, high power consumption, and high maintenance costs during operation.

In addition, the flywheel battery installs the flywheel rotor, hybrid magnetic bearing and motor on the shaft as independent individuals. The hybrid magnetic bearing needs to provide the flywheel battery with 5 degrees of freedom controllable suspension support. Therefore, the flywheel battery is large in size, High cost, high energy consumption, and complex structure limit the improvement of the energy storage density and energy storage efficiency of flywheel batteries

Images