Energy storage system for magnetic floating flywheel

Abstract

The utility model discloses a magnetic levitation flywheel energy accumulation system, which has the advantages of small deadweight, large electricity storage, low manufacturing cost, mobile usage, free adjustment of the real-time discharge quantity value to the outside, and quick charge or large real-time discharge; wherein, the axial component of ''the high-vacuum enclosed housing'' is made of materials of low specific gravity. No permanent magnetic material components are positioned on the ''Flywheel'' and the ''Wheel Disk'' is divided into three rings. Four ''Permanent Magnetic Rotating Motor Devices'' are arranged. The ''Magnet bearing'' is ''all magnetic levitation bearing'' or ''semimagnetic levitation bearing''. The utility model is also provided with a device to guarantee the reliability of the mobile usage of the ''Magnet Bearing''.

Description

(1) Technical field [0001] The invention relates to the technical field of electric storage devices. (2) Background technology [0002] The magnetic levitation flywheel energy storage system is a kind of physical battery. [0003] The magnetic levitation flywheel energy storage system in this article refers specifically to one: it consists of "high vacuum sealed shell", "magnetic bearing", "flywheel", and "permanent magnet rotating motor device" "The "permanent magnet rotating motor device" is all The rotor adopts permanent magnets and the stator adopts electric excitation "permanent magnet rotating electrical machine device". It consists of an energy storage system that stores mechanical energy instead of storing electrical energy; for example: "US Patent No. US-5124605" or "China The energy storage system described in Patent No. 01126564.7". [0004] The maglev flywheel energy storage system uses its "permanent magnet rotating motor device" to allow its "flywheel" to exc...

AI Technical Summary

Problems solved by technology

[0014] Because the "flywheel" of the prior art contains many permanent magnet material parts; according to the above-mentioned known one, under the condition of equivalent quality and rotational speed, the rotational angular velocity of the "flywheel" moment of inertia is relatively small because of the low resistance of the permanent magnet material. Due to the influence of tensile strength and large specific gravity, the quality of the "flywheel" cannot be concentrated to the steel parts with higher tensile strength and larger radius of rotation, and the radius of rotation of the moment of inertia is smaller", then, according to the above-mentioned known 2, its " "Flywheel" has less energy storage

[0015] Therefore, according to the above-mentioned known knowledge three, the prior art has the disadvantage of small storage capacity

[0016] 3. The "magnetic bearing" of the prior art is only limited to two groups of "permanent magnetic material part pairs" (that is, a pair of permanent magnetic material parts that use magnetic repulsion to achieve the task of magnetic levitation motion support), axial and radial movement The support is "full magnetic suspension bearing" with magnetic suspension support;

[0023] Therefore, there is the shortcoming that manufacturing cost is high in the prior art

[0024] 4. In the prior art, there is no device specially designed to prevent the "pair of permanent magnetic material parts" of its "magnetic bearing" from colliding with itself

[0035] When the "permanent magnet rotating electrical machine device" of the prior art is in operation, the surface area of ​​its rotor permanent magnet material parts participating in the excitation is fixed; The value corresponds to the real-time rotational angular velocity of its rotor permanent magnet material parts participating in the excitation surface area, which cannot be adjusted freely

[0036] Therefore, according to the above-mentioned known knowledge 3, the prior art has the disadvantage of being unable to freely adjust the real-time discharge value to the outside world

[0037] 6. In the prior art, there is only one set of "permanent magnet rotating electrical machine device" that cannot simultaneously perform two-way conversion of electromechanical energy - no matter how many "rotor and stator pairs" it has - it is called a set of "permanent magnet rotating electrical machine device" ""; moreover, the surface area of ​​the rotor permanent magnet material part participating in the excitation is located on the axial end face of the "flywheel"

[0040] Since there is only one set of "permanent magnet rotating electrical machine device" in the prior art, it can only rely on this set of "permanent magnet rotating electrical machine device" to exchange electromechanical energy with the outside world. However, the rotor permanent magnet material of this set of "permanent magnet rotating electrical machine device" The surface area of ​​the part participating in the excitation is located at the axial end face of the "flywheel", and the permanent magnet material part is limited by the low tensile strength of the permanent magnet material, and the radius of rotation is not large, so the surface area participating in the excitation is very small; then, according to the above-mentioned known one , the power of this set of "permanent magnet rotating motor device" is very small;

[0041] Therefore, according to the above-mentioned known second, the prior art has the disadvantage of not being able to charge quickly or discharge a large amount in real time

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