Energy storage device of magnetic suspension flywheel

Abstract

The invention discloses an energy storage device of magnetic suspension flywheel, comprising an energy storing and converting part, a magnetic suspension supporting part and an auxiliary part, wherein the energy storing and converting part includes a flywheel, a rotor of the motor / generator and a stator part; the magnetic suspension supporting part comprises a radial magnetic bearing, an axial magnetic bearing, an axial sensor, a radial sensor and a protection bearing; the auxiliary part includes a shell and a mounting shaft; the radial magnetic bearing is a radial mixed conical magnetic bearing; the suction disk of each axial magnetic bearing is respectively installed on two side wheel surfaces of the flywheel; the radial mixed conical magnetic bearing and the axial magnetic bearing are non-mechanically contacted magnetic suspension bearings; the mounting shafts of the energy storing and converting part, the magnetic suspension supporting part and the auxiliary part are sealed in the shell of the auxiliary part; the inside of the shell is in vacuum state. The invention has the characteristics of compact structure, high specific energy density and discharge depth, long service life, low power consumption and stable performance without pollution.

Description

technical field [0001] The invention relates to a magnetic levitation flywheel energy storage device, which can be used in aerospace (satellite energy storage battery, integrated power and attitude control), military (high-power electromagnetic gun), electric power (power peak regulation), communication (UPS), automobile industry (electric vehicles) and other fields. Background technique [0002] The magnetic levitation flywheel energy storage device, also known as the magnetic levitation flywheel battery, uses a high-speed rotating flywheel to store energy. It is being favored by all walks of life for its high specific power, high specific energy, fast charging, long life and no chemical pollution. Attention, it has been used in military and civilian industries such as automobiles, trains, aerospace, and aviation abroad. [0003] When the maglev flywheel battery is charging, its motor acts as a motor, which drives the flywheel to rotate at a high speed, converting electric...

AI Technical Summary

Problems solved by technology

Many of the existing magnetic levitation flywheel batteries at home and abroad use superconducting magnetic levitation bearings to reduce frictional resistance, but the auxiliary system required by such bearings has a complex structure and high production costs, which is not suitable for popularization

In addition, the existing magnetic levitation flywheel battery also has certain defects in structure. For example, the suction disc of the axial magnetic bearing is an independent component. Such a component is installed on the shaft, which undoubtedly increases the axial dimension and improves the installation requirements.

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