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Magnetic suspension flywheel energy storage system using liquid cooling heat dissipation technology

A flywheel energy storage, liquid-cooled heat dissipation technology, applied in the direction of controlling mechanical energy, cooling/ventilation devices, magnetic circuit rotating parts, etc., can solve the problems of air-cooled heat dissipation, no electrical parts, etc. Safety, the effect of improving the cooling effect

Inactive Publication Date: 2021-10-08
坎德拉(深圳)新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no air inside the maglev flywheel energy storage system, so air-cooled heat dissipation cannot be performed; liquid-cooled heat dissipation is generally a purely mechanical system, and there is no electrical part inside the system, and the electrical part inside the flywheel system causes the ordinary liquid cooling system to affect the electrical part , need to isolate the cooling liquid and electrical part, thus need to design the liquid cooling system specially

Method used

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  • Magnetic suspension flywheel energy storage system using liquid cooling heat dissipation technology
  • Magnetic suspension flywheel energy storage system using liquid cooling heat dissipation technology
  • Magnetic suspension flywheel energy storage system using liquid cooling heat dissipation technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: with reference to attached Figure 1-4 As shown, a magnetic levitation flywheel energy storage system using liquid cooling technology includes a system housing 1, a magnetic bearing, a motor rotor 12, a flywheel rotor 2 and a flywheel shaft 4, wherein the system housing 1 integrates the housing and the stator, The stator includes a magnetic bearing stator and a motor stator. The flywheel rotor 2 includes a mandrel 14 and a flywheel 11 mounted on the mandrel 14. The center of the mandrel 14 is provided with a central hole 3 with a lower opening, and in the central hole 3 The flywheel shaft 4 is provided, and the upper end of the flywheel shaft 4 is fixedly connected to the top of the central hole 3, so that when the flywheel rotor 2 rotates, the flywheel shaft 4 can rotate synchronously, and the upper end and the lower end of the mandrel shaft 14 are respectively provided with protection The bearing 6 and the magnetic bearing rotor 5 are located on the inne...

Embodiment 2

[0030] Embodiment 2: The difference between this embodiment and Embodiment 1 is only the difference in the self-priming structure at the liquid inlet 8 of the flywheel shaft 4, and other structures are the same as Embodiment 1. like Image 6 As shown, in the present embodiment, the self-priming structure adopts the impeller 15 arranged in the liquid inlet 8, and the frame of the impeller 15 is installed on the inner wall of the liquid inlet 8, and the impeller 15 rotates with the rotation of the flywheel shaft 4, and the impeller 15 The blades are arranged obliquely, so the impeller 15 rotates to generate a pump effect, sucking the cooling liquid into the liquid inlet 8 to form an upward liquid flow. When in use, the number of blades and the inclination angle of the impeller 15 can be determined according to actual conditions. Similar to the spiral groove 16, in use, the impeller 15 is fully or partially submerged below the liquid level of the cooling liquid.

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PUM

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Abstract

The invention relates to a magnetic suspension flywheel energy storage system using a liquid cooling heat dissipation technology, which comprises a system shell, a motor rotor, a magnetic bearing, a flywheel rotor and a flywheel shaft, the flywheel shaft is installed in a center hole of the flywheel rotor, the top end of the flywheel shaft is fixedly connected in the center hole of the flywheel rotor, the lower end of the flywheel shaft extends out of the center hole of the flywheel rotor to extend into a cooling liquid groove in the bottom of the system shell, the flywheel shaft is a hollow shaft, a hollow cavity of the flywheel shaft is a liquid inlet flow channel, a liquid inlet opening of the liquid inlet flow channel is formed in the lower end face of the flywheel shaft, and a gap is reserved between the outer circle face of the flywheel shaft and the inner wall of the center hole and serves as a liquid outlet flow channel of cooling liquid. And the upper end of the flywheel shaft is provided with a circulating hole for communicating the liquid inlet flow channel with the liquid outlet flow channel. The cooling liquid can be sucked into the flywheel shaft without depending on external equipment, circulating heat dissipation of the flywheel rotor is completed, the cooling liquid does not make contact with other equipment in the system, and therefore adverse effects on electrical equipment in the system cannot be caused.

Description

technical field [0001] The invention belongs to the field of heat dissipation of flywheel energy storage systems, and in particular relates to a magnetic levitation flywheel energy storage system using liquid cooling heat dissipation technology. Background technique [0002] In the magnetic levitation flywheel energy storage system, the heat source on the rotor includes the iron loss of the motor and the iron loss of the magnetic bearing. Among them, the iron loss of the motor is relatively large, and since the rotor is completely suspended in a vacuum, the rotor can only dissipate heat through radiation. Without heat exchange, heat accumulation will cause the rotor to reach a very high temperature, which will lead to demagnetization of the magnetic steel on the rotor and a decrease in the performance of the material, causing a safety hazard. [0003] Existing rotor heat dissipation systems are generally in an air state, using air cooling or liquid cooling for heat dissipati...

Claims

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Application Information

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IPC IPC(8): H02K7/02H02K9/19H02K1/32
CPCH02K7/025H02K9/19H02K1/32Y02E60/16
Inventor 晏建贺智威柳哲杨科
Owner 坎德拉(深圳)新能源科技有限公司