Stator of an electrical machine

US11349364B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Tobias Hein · Gronau, DE
• Fabian Lange · Solingen, DE
• Patrick Priebe · Hannöver, DE
• Stefan Ossenkopp · Harsum, DE

Key dates

• Filing date: May 11, 2017
• Grant date: May 31, 2022
• Expiry date: Feb 13, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02K2213/03
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A stator of an electrical machine which has stator slots and conductor elements arranged in the stator slots, which conductor elements each have two conductor ends, is already known. A plurality of conductor ends, which are situated next to one another, of different conductor elements are in each case connected to one another by means of a weld connection, which is provided at the end sides of the conductor ends in question, without additional material. The conductor ends which are connected to one another in each case form a common rectangular conductor cross section which has a height H and a width B, wherein the height H corresponds to the height h of an individual cross section of the conductor ends, and the width B of the common conductor cross section is made up of the sum of the widths b of the individual cross sections of the conductor ends. The weld connection is in each case provided, as seen in the direction of the width B, between two non-melted edge sections of the outermost conductor ends. The weld cross section in the direction of the height H is comparatively low, this having effects on the long-tem mechanical strength of the weld connection and, during operation of…