US 12,476,501 B2
Rotor and electric machine of an electric vehicle
Christian Koenen, Stuttgart (DE)
Assigned to DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFT, Stuttgart (DE)
Filed by Dr. Ing. h.c. F. Porsche Aktiengesellschaft, Stuttgart (DE)
Filed on Jun. 13, 2023, as Appl. No. 18/333,586.
Claims priority of application No. 10 2022 115 420.3 (DE), filed on Jun. 21, 2022.
Prior Publication US 2023/0412021 A1, Dec. 21, 2023
Int. Cl. H02K 1/27 (2022.01); H02K 1/276 (2022.01); H02K 1/28 (2006.01)
CPC H02K 1/276 (2013.01) [H02K 1/28 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A rotor of an electric machine of an electric vehicle, comprising:
a plurality of permanent magnets; and
a rotor core, which comprises a plurality of magnetic receptacle cavities, in each of which one permanent magnet is arranged,
wherein the permanent magnets are respectively connected to the rotor core via a spring-groove connection in a form-fit manner such that a displacement of the permanent magnets in a direction of an outer peripheral surface of the rotor core is blocked,
wherein the permanent magnets are each integrally manufactured by metal injection molding,
wherein, between a respective surface permanent magnet of a plurality of surface permanent magnets and two permanent magnets arranged in a V-shape, an intermediate element is arranged, which abuts the respective surface permanent magnet with a first side and abuts the permanent magnets with a second side subtended relative to the first side, and
wherein the second side of the intermediate element is formed on a protrusion of the spring-groove connection.