	US 12,407,205 B2
	Rotating electrical machine
Masamitsu Kimura, Shizuoka (JP); Reiji Sato, Shizuoka (JP); and Makoto Serizawa, Shizuoka (JP)
Assigned to Mahle International GmbH, (DE)
Filed by MAHLE International GmbH, Stuttgart (DE)
Filed on Nov. 9, 2022, as Appl. No. 17/984,234.
Claims priority of application No. 2021-183712 (JP), filed on Nov. 10, 2021.
Prior Publication US 2023/0145116 A1, May 11, 2023
Int. Cl. H02K 3/28 (2006.01); H02K 3/52 (2006.01); H02K 21/22 (2006.01)

CPC H02K 3/28 (2013.01) [H02K 3/522 (2013.01); H02K 21/22 (2013.01); H02K 2203/06 (2013.01)]

16 Claims

1. A rotating electrical machine, comprising:

a stator including a stator body, a plurality of iron cores arranged along a circumference of the stator body, and a plurality of windings wound on each of the plurality of iron cores;

a rotor including a plurality of permanent magnets arranged to have different magnetism along the circumference;

the plurality of windings including a first phase winding, a second phase winding, and a third phase winding connected in a delta connection;

the first phase winding, the second phase winding, and the third phase winding each connected in series with a respective crossover wire;

wherein a winding direction of the first phase winding and a winding direction of the third phase winding is a first winding direction;

wherein a winding direction of the second phase winding is a second winding direction, which is opposite the first winding direction;

wherein a first crossover wire connecting the first phase winding is arranged on a first side of the stator;

wherein a second crossover wire connecting the second phase winding is arranged on a second side of the stator disposed opposite the first side;

wherein a third crossover wire connecting the third phase winding is arranged on the first side of the stator;

wherein the first phase winding, the second phase winding, and the third phase winding each include a first terminal and a second terminal;

wherein the first terminal of the serially connected first phase winding and the second terminal of the serially connected third phase winding are connected at a first contact point;

wherein the second terminal of the serially connected second phase winding and the second terminal of the serially connected first phase winding are connected at a second contact point;

wherein the first terminal of the serially connected third phase winding and the first terminal of the serially connected second phase winding are connected at a third contact point;

wherein the first contact point, the second contact point, and the third contact point are disposed on a connection area of an axial end face of the stator body, the axial end face of the stator body disposed on the first side of the stator;

wherein the plurality of iron cores includes a first iron core, a second iron core, a third iron core, a fourth iron core, and a fifth iron core disposed sequentially one after another, in that order, along the circumference;

wherein a first circumferential end of the connection area is disposed adjacent to a region between the first iron core and the second iron core; and

wherein an opposite, second circumferential end of the connection area is disposed adjacent to a region between the fourth iron core and the fifth iron core.