公开(公告)号：US20210376678A1

公开(公告)日：2021-12-02

申请号：US16755671

申请日：2018-09-04

Applicant: Robert Bosch GmbH

Inventor： Andreas Herzberger ,  Armin Elser ,  Martin Ermer ,  Patrick Heuser ,  Tobias Hein ,  Johannes Riedl

IPC: H02K3/12 ,  H02K3/28

Abstract: The invention relates to a stator having a multi-phase wave winding made of hairpin conductor elements (5). Each phase consists of two parallel or serially connected branches (6, 6.1, 6.2). Each branch has a first (3.1) and a second (3.2) winding portion, which are connected to each other in series. The slot position of the two limbs (5.1) of each hairpin conductor element alternates by +−1. The first winding portion (3.1) extends clockwise along the stator circumference; the second winding portion (3.2) extends counterclockwise and is connected to the first winding portion via a reverse-connector conductor element (12, 12.1, 12.2). Both limbs of the reverse-connector conductor element (12.1) of the first winding branch (6.1) are located in the uppermost slot position; the limbs of the reverse-connector conductor element (12.2) of the second winding branch (6.2) are located in the lowermost slot position.

公开(公告)号：US11296565B2

公开(公告)日：2022-04-05

申请号：US16755671

申请日：2018-09-04

Applicant: Robert Bosch GmbH

Inventor： Andreas Herzberger ,  Armin Elser ,  Martin Ermer ,  Patrick Heuser ,  Tobias Hein ,  Johannes Riedl

IPC: H02K3/12 ,  H02K3/28

Abstract: The invention relates to a stator having a multi-phase wave winding made of hairpin conductor elements (5). Each phase consists of two parallel or serially connected branches (6, 6.1, 6.2). Each branch has a first (3.1) and a second (3.2) winding portion, which are connected to each other in series. The slot position of the two limbs (5.1) of each hairpin conductor element alternates by +−1. The first winding portion (3.1) extends clockwise along the stator circumference; the second winding portion (3.2) extends counterclockwise and is connected to the first winding portion via a reverse-connector conductor element (12, 12.1, 12.2). Both limbs of the reverse-connector conductor element (12.1) of the first winding branch (6.1) are located in the uppermost slot position; the limbs of the reverse-connector conductor element (12.2) of the second winding branch (6.2) are located in the lowermost slot position.