一种用于飞轮储能的低损耗转子结构
By employing magnetic bearings and stabilizing bearings to support the rotor structure, the problem of high frictional loss in flywheel energy storage systems is solved, achieving low-loss and reliable energy storage, which is suitable for industrial-grade flywheel energy storage applications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAMEN DONGGANG INTELLIGENT TECH
- Filing Date
- 2025-09-19
- Publication Date
- 2026-07-17
AI Technical Summary
Existing flywheel energy storage systems use mechanical bearings to support the rotor structure, resulting in high frictional losses, low energy efficiency, and frequent maintenance requirements. The mechanical bearings generate significant frictional heat when rotating at high speeds, causing a large amount of energy loss.
The rotor structure is supported by magnetic bearings and stabilizing bearings. The rotor is supported by non-contact suspension. Combined with auxiliary bearings as a safety redundancy design, mechanical support is provided to prevent the rotor from falling and enhance the system's impact resistance.
Significantly reduces frictional losses, extends equipment life, enhances system reliability and safety, reduces downtime risks, and optimizes energy storage performance.
Smart Images
Figure CN224515800U_ABST
Abstract
Claims
1. A low-loss rotor structure for a flywheel energy storage, comprising a base (1), characterized in that: The base (1) is fixedly provided with two groups of first supporting seats (2), magnetic bearings (3) are arranged on the two groups of first supporting seats (2), shafts (4) are coaxially arranged on the two groups of magnetic bearings (3), flywheels (5) are coaxially arranged on the shafts (4), reinforcing portions (6) are arranged on the outer edge portions of the flywheels (5), position sensors (8) are arranged on the two groups of first supporting seats (2), signal conducting wires (9) are arranged at the bottoms of the two groups of position sensors (8), and a controller (10) is arranged on the base (1) and electrically connected with the two groups of position sensors (8) through the two groups of signal conducting wires (9).
2. A low-loss rotor structure for a flywheel energy storage according to claim 1, characterized in that: The magnetic bearing (3) comprises a first outer ring (31), a plurality of radial magnetic poles (32) are uniformly arranged on the inner side of the first outer ring (31), and a first magnetic rotor (33) is coaxially arranged on the shaft (4) and arranged in contactless mode on the inner side of the plurality of radial magnetic poles (32).
3. A low-loss rotor structure for a flywheel energy storage according to claim 1, characterized in that: The base (1) is further fixedly connected with two groups of second supporting seats (11), and stable bearings (12) are arranged on the two groups of second supporting seats (11). The stable bearing (12) comprises a second outer ring (121) fixed on the second supporting seat (11), an axial magnetic pole (122) arranged on the inner side of the second outer ring (121), and a second magnetic rotor (123) coaxially arranged on the shaft (4) and arranged in contactless mode on the inner side of the axial magnetic pole (122).
4. A low-loss rotor structure for a flywheel energy storage according to claim 1, characterized in that: The base (1) is further fixedly connected with two groups of third supporting seats (13), and auxiliary bearings (14) are arranged on the two groups of third supporting seats (13). The two groups of auxiliary bearings (14) are coaxially arranged on the shaft (4) respectively.
5. A low-loss rotor structure for a flywheel energy storage according to claim 4, characterized in that: The auxiliary bearing (14) comprises a third outer ring (141), a retainer (142) arranged on the inner side of the third outer ring (141), a plurality of rollers (143) arranged on the inner side of the retainer (142), and a protection rotor (144) coaxially arranged on the shaft (4) and arranged in contactless mode on the inner side of the plurality of rollers (143).
6. A low-loss rotor structure for a flywheel energy storage according to claim 5, characterized in that: The roller (143) is a cylindrical roller.
7. A low-loss rotor structure for a flywheel energy storage according to claim 1, characterized in that: The outer side of the reinforcing portion (6) is fixedly connected with a plurality of rotary arms (7).