Patent ID: 11876409
Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 11:
12. An electric machine comprising:
a stator; and
a rotor rotatable arranged within the stator, the rotor comprising:
a rotor body formed from a plurality of stacked laminations defining a first axial end and an opposing second axial end, each of the plurality of stacked laminations including a plurality of openings that are aligned so as to define a plurality of passages through the rotor body;
a plurality of reinforcement elements extending through the plurality of stacked laminations, each of the plurality of reinforcement elements being arranged in a corresponding one of the plurality of passages and including a first end portion and a second end portion;
a first rotor end ring positioned at the first axial end of the rotor body, the first rotor end ring being formed with select ones of the plurality of reinforcement elements, the plurality reinforcement elements being circumferentially spaced from another about the rotor body and radially spaced from one another across the rotor body; and
a second rotor end ring positioned at the second axial end of the rotor body, the second rotor end ring being formed with other select ones of the plurality of reinforcement elements, wherein the first rotor end ring and the select ones of the plurality of reinforcement elements form a monolithic structure and the second rotor end ring and the other select ones of the plurality of reinforcement elements form another monolithic structure.