US 11,811,292 B1
Tumbler-type vehicle-mounted flywheel energy storage device with five-degree-of-freedom magnetic suspension support
Weiyu Zhang, Zhenjiang (CN); Lindong Zhang, Zhenjiang (CN); Huangqiu Zhu, Zhenjiang (CN); Long Shan, Zhenjiang (CN); Juexin Yu, Zhenjiang (CN); and Jianping Wang, Zhenjiang (CN)
Assigned to JIANGSU UNIVERSITY, Zhenjiang (CN)
Appl. No. 17/630,939
Filed by JIANGSU UNIVERSITY, Zhenjiang (CN)
PCT Filed Mar. 26, 2021, PCT No. PCT/CN2021/083164
§ 371(c)(1), (2) Date Jan. 28, 2022,
PCT Pub. No. WO2022/193352, PCT Pub. Date Sep. 22, 2022.
Claims priority of application No. 202110286861.0 (CN), filed on Mar. 17, 2021.
Int. Cl. H02K 7/09 (2006.01); H02K 7/02 (2006.01)
CPC H02K 7/025 (2013.01) [H02K 7/09 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A tumbler-type vehicle-mounted flywheel energy storage device with a five-degree-of-freedom magnetic suspension support, having a shell cavity and a five-degree-of-freedom magnetic bearing concentrically disposed within the shell cavity, wherein the five-degree-of-freedom magnetic bearing has an outer rotor, an inner stator, coils, and permanent magnets, a flywheel is used as the outer rotor, and the inner stator is concentrically fitted inside the flywheel, wherein the flywheel is formed into a bowl by a metal flywheel rotor and a composite material ring by means of interference fit, the metal flywheel rotor comprises an upper-section ring, a mid-section hollow hemisphere, and a lower-section ring, the composite material ring is closely fitted outside the upper-section ring to form a bowl-shaped bowl opening part, the mid-section hollow hemisphere forms a bowl-shaped bowl bottom part, and the lower-section ring forms a bowl-shaped bowl base part; an annular axial thrust disc protrudes inward in a radial direction from an inner wall on a bottom end of the upper-section ring, an area above the axial thrust disc is a bowl opening empty slot layer, an area below the axial thrust disc-is a sphere empty slot layer and a bowl bottom empty slot layer in sequence, the bowl opening empty slot layer, the sphere empty slot layer, and the bowl bottom empty slot layer, are connected from top to bottom to form an inner cavity of the flywheel, a supporting frame and the inner stator, the coils, and the permanent magnets of the five-degree-of-freedom magnetic bearing are accommodated in the inner cavity of the flywheel, the supporting frame comprises an upper cylinder and a lower disc, and has an upper end fixedly connected to the shell cavity, and is fixedly fitted in the inner stator; an outer diameter of the lower-section ring is smaller than an inner diameter of the upper-section ring, a solid bowl base central shaft is right in the middle of the lower-section ring, a bowl base annular cavity is formed between the bowl base central shaft and the lower-section ring, and a drive motor is accommodated in the bowl base annular cavity.