Coil with a hairpin winding and method for producing said coil

US11990803B2 · kind B2 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Stefan Reuter · Hammelburg, DE
• Matthias Ebert · Dettelbach, DE
• Ralf Wittstadt · Grettstadt, DE
• Christian Brückner · Rimpar, DE
• Katja Willacker · Wiesentheid, DE
• Roland Lindwurm · Schweinfurt, DE
• Jochen Wittmann · Burkardroth, DE
• Christoph Wieder · Küps, DE

Key dates

• Filing date: Aug 26, 2020
• Grant date: May 21, 2024
• Expiry date: May 23, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02K2203/06
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A coil with a distributed winding formed from hairpins that each have two straight-line conductor portions arranged in different slots of a coil body. Contact regions shaped in circumferential direction adjoin the conductor portions at one axial end and are connected at the other axial end through a turning region. The contact regions have at the end remote of the coil body a connection portion that are aligned in radially extending rows. The contact regions of a layer are shaped in the same circumferential direction. A portion of the contact regions of an outer layer is deformed in radial direction to form an additional, and these contact regions are shaped in a circumferential direction opposite to the contact regions of the outer layer.