公开(公告)号：US09369016B2

公开(公告)日：2016-06-14

申请号：US14133224

申请日：2013-12-18

Applicant: Robert Bosch GmbH

Inventor： Mercedes Herranz Gracia ,  Marcus Alexander ,  Arndt Kelleter ,  Nils Gebert ,  Miguel Ruiz De Larramendi ,  Patrick Heuser ,  Sebastian Tabarelli

IPC: H02K21/12 ,  H02K1/27

CPC classification number: H02K1/276 ,  H02K2213/03

Abstract: A rotor (1) for an electric machine, in particular a permanently excited synchronous machine. At least one recess (20) is formed on the outer wall (12) of the receiving space (6) and forms a non-magnetizable space (29) adjacent to the lengthwise surface (10) of the permanent magnet (7). Due to this non-magnetizable space (29), iron losses in the stator teeth can be reduced in particular during operation of the electric machine in the field weakening range, which may result in a rise in efficacy of up to 3% for the electric machine.

Abstract translation: 一种用于电机的转子（1），特别是永久激励的同步电机。 在容纳空间（6）的外壁（12）上形成至少一个凹槽（20），并形成与永磁体（7）的纵向表面（10）相邻的不可磁化空间（29）。 由于这种不可磁化的空间（29），特别是在电机在弱磁区域的操作期间，定子齿中的铁损可以减小，这可能导致电功率上升高达3％ 机。

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：US09973050B2

公开(公告)日：2018-05-15

申请号：US14650431

申请日：2013-10-15

Applicant: Robert Bosch GmbH

Inventor： Patrick Heuser ,  Miguel Ruiz De Larramendi ,  Mercedes Herranz Gracia

IPC: H02K3/28 ,  H02K17/16 ,  H02K1/16 ,  H02K17/20 ,  H02K3/12

CPC classification number: H02K3/28 ,  H02K1/165 ,  H02K3/12 ,  H02K17/16 ,  H02K17/205 ,  H02K2213/03 ,  Y02T10/641

Abstract: The invention relates to an asynchronous machine (1) as can be used particularly in electric vehicles or hybrid vehicles. The asynchronous machine (1) has a rotor (5) and a stator (3). The asynchronous machine is designed and controlled in such a manner that it has a pole pair number p of p=3. Because of the reduced yoke saturation that can consequently be achieved, the stator yoke (9) can be designed with a lesser height hy1, such that a ratio of the outer rotor diameter D2a to the outer stator diameter D1a can assume values between 0.7 and 0.8. As a result, enlarged rotor teeth (19) and correspondingly enlarged rotor grooves (21) can be formed in the rotor (5), such that electrical losses in the material in the rotor grooves (21) acting as the rotor coil element (23) are smaller in comparison to conventional asynchronous machines. The electrical losses occurring to a greater extent in the stator (3) compensating for this lead to a lesser warming of the stator (3) than would be the case with the rotor (5) as the stator (3) can be cooled by simple means. Overall, a higher continuous torque can thus be achieved with the asynchronous machine (1) according to the invention.

公开(公告)号：US20170331353A1

公开(公告)日：2017-11-16

申请号：US15525551

申请日：2015-09-11

Applicant: Robert Bosch GmbH

Inventor： Marcus Alexander ,  Arndt Kelleter ,  Miguel Ruiz De Larramendi ,  Patrick Heuser ,  Mercedes Herranz Gracia

IPC: H02K17/16 ,  H02K1/26 ,  H02K1/16 ,  H02K17/12 ,  H02K3/12 ,  H02K1/14 ,  H02K15/085

Abstract: The invention relates to an electric asynchronous machine (1), in particular an induction machine, comprising:—a cylindrical stator (2) with stator teeth (22) on a stator yoke (21), wherein a ratio between a yoke height (hy1) of the stator yoke (21) in the radial direction and a groove height (hn1) of the stator grooves (23) in the radial direction ranges from 1.75 to 2.5;—a cylindrical rotor (4) with poles (42) on a rotor yoke which are defined by short-circuit windings in a rotor body (41), wherein a ratio between the yoke height of the rotor body (41) in the radial direction and the groove height of the rotor grooves in the radial direction ranges from 2 to 2.75.

公开(公告)号：US20140167552A1

公开(公告)日：2014-06-19

申请号：US14133224

申请日：2013-12-18

Applicant: ROBERT BOSCH GMBH

Inventor： Mercedes Herranz Gracia ,  Marcus Alexander ,  Arndt Kelleter ,  Nils Gebert ,  Miguel Ruiz De Larramendi ,  Patrick Heuser ,  Sebastian Tabarelli

IPC: H02K1/27

CPC classification number: H02K1/276 ,  H02K2213/03

Abstract: A rotor (1) for an electric machine, in particular a permanently excited synchronous machine. At least one recess (20) is formed on the outer wall (12) of the receiving space (6) and forms a non-magnetizable space (29) adjacent to the lengthwise surface (10) of the permanent magnet (7). Due to this non-magnetizable space (29), iron losses in the stator teeth can be reduced in particular during operation of the electric machine in the field weakening range, which may result in a rise in efficacy of up to 3% for the electric machine.

Abstract translation: 一种用于电机的转子（1），特别是永久激励的同步电机。 在容纳空间（6）的外壁（12）上形成至少一个凹槽（20），并形成与永磁体（7）的纵向表面（10）相邻的不可磁化空间（29）。 由于这种不可磁化的空间（29），特别是在电机在弱磁区域的操作期间，定子齿中的铁损可以减小，这可能导致电功率上升高达3％ 机。

公开(公告)号：US20190238014A1

公开(公告)日：2019-08-01

申请号：US16336457

申请日：2017-08-17

Applicant: Robert Bosch GmbH

Inventor： Murat Kol ,  Patrick Heuser

IPC: H02K1/27

CPC classification number: H02K1/276 ,  H02K1/2766 ,  H02K29/03 ,  H02K2201/06 ,  H02K2213/03

Abstract: The invention relates to an electric machine comprising a rotor (10) and a stator (20). The rotor (10) has magnet pockets for receiving permanent magnets (55, 56, 85, 86), and the magnet pockets comprise at least one first pair of magnet pockets (50, 51) and a second pair of magnet pockets (80, 11). The second pair (80, 81) is arranged further inwards than the first pair (50, 51) when viewed in a radial direction with respect to a rotational axis, and the magnet pockets of each pair of magnet pockets (50, 51, 80, 81) are arranged symmetrically to one another with respect to an axis of symmetry (45), wherein the axis of symmetry (45) runs in the radial direction and through the center of the rotor (10). The magnet pockets of each pair of magnet pockets (50, 51, 80, 81) are arranged such that the distance of each magnet pocket to the axis of symmetry (45) increases as the distance to the circumferential edge (110) of the rotor (10) decreases. The magnet pockets of the first pair (50, 51) are arranged at a first mechanical angle to one another, and the magnet pockets of the second pair (80, 81) are arranged at a second mechanical angle to one another. The invention is characterized in that the first angle ranges from ca. 100° to ca. 140°, in particular from ca. 120° to ca. 140°, and the second angle ranges from ca. 65° to ca. 112°, in particular from ca. 88° to ca. 112°.

公开(公告)号：US20150311759A1

公开(公告)日：2015-10-29

申请号：US14650431

申请日：2013-10-15

Applicant: ROBERT BOSCH GMBH

Inventor： Patrick Heuser ,  Miguel Ruiz De Larramendi ,  Mercedes Herranz Gracia

IPC: H02K3/28 ,  H02K3/12 ,  H02K17/16

CPC classification number: H02K3/28 ,  H02K1/165 ,  H02K3/12 ,  H02K17/16 ,  H02K17/205 ,  H02K2213/03 ,  Y02T10/641

Abstract: The invention relates to an asynchronous machine (1) as can be used particularly in electric vehicles or hybrid vehicles. The asynchronous machine (1) has a rotor (5) and a stator (3). The asynchronous machine is designed and controlled in such a manner that it has a pole pair number p of p=3. Because of the reduced yoke saturation that can consequently be achieved, the stator yoke (9) can be designed with a lesser height hy1, such that a ratio of the outer rotor diameter D2a to the outer stator diameter D1a can assume values between 0.7 and 0.8. As a result, enlarged rotor teeth (19) and correspondingly enlarged rotor grooves (21) can be formed in the rotor (5), such that electrical losses in the material in the rotor grooves (21) acting as the rotor coil element (23) are smaller in comparison to conventional asynchronous machines. The electrical losses occurring to a greater extent in the stator (3) compensating for this lead to a lesser warming of the stator (3) than would be the case with the rotor (5) as the stator (3) can be cooled by simple means. Overall, a higher continuous torque can thus be achieved with the asynchronous machine (1) according to the invention.

Abstract translation: 本发明涉及可以特别用于电动车辆或混合动力车辆中的异步机（1）。 异步机（1）具有转子（5）和定子（3）。 异步电机的设计和控制方式使其具有p = 3的极对数p。 由于可以实现减小的磁轭饱和度，定子磁轭（9）可以设计成具有较小的高度hy1，使得外转子直径D2a与外定子直径D1a之比可以为0.7至0.8之间的值 。 结果，可以在转子（5）中形成扩大的转子齿（19）和相应地扩大的转子槽（21），使得用作转子线圈元件（23）的转子槽（21）中的材料的电损耗 ）比传统的异步机更小。 与定子（3）的转子（5）相比，在定子（3）中发生更大程度的电损耗可以通过简单的 手段。 总之，通过根据本发明的异步机（1）可以实现更高的连续转矩。

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.

公开(公告)号：US10770956B2

公开(公告)日：2020-09-08

申请号：US15525551

申请日：2015-09-11

Applicant: Robert Bosch GmbH

Inventor： Marcus Alexander ,  Arndt Kelleter ,  Miguel Ruiz De Larramendi ,  Patrick Heuser ,  Mercedes Herranz Gracia

IPC: H02K1/16 ,  H02K1/26 ,  H02K17/12 ,  H02K17/16 ,  H02K1/14 ,  H02K3/12 ,  H02K15/085

Abstract: The invention relates to an electric asynchronous machine (1), in particular an induction machine, comprising: —a cylindrical stator (2) with stator teeth (22) on a stator yoke (21), wherein a ratio between a yoke height (hy1) of the stator yoke (21) in the radial direction and a groove height (hn1) of the stator grooves (23) in the radial direction ranges from 1.75 to 2.5; —a cylindrical rotor (4) with poles (42) on a rotor yoke which are defined by short-circuit windings in a rotor body (41), wherein a ratio between the yoke height of the rotor body (41) in the radial direction and the groove height of the rotor grooves in the radial direction ranges from 2 to 2.75.

公开(公告)号：US10666106B2

公开(公告)日：2020-05-26

申请号：US15525361

申请日：2015-09-10

Applicant: Robert Bosch GmbH

Inventor： David Bauer ,  Patrick Heuser

IPC: H02K3/14 ,  H02K3/28

Abstract: Stators are already known which in each case comprise an annular stator stack having grooves which are open towards an axis of the stator and in which an electrical winding is provided which comprises a plurality of winding branches. The plurality of winding branches each have a plurality of parallel wires for reducing the so-called skin effect. The parallel wires are arranged in the grooves, wherein the winding branches in their configuration each form a plurality of turns of a coil which are each part of an electrical coil, wherein a turn of a coil is formed in each case by two sides of a turn, lying in different grooves, of one of the winding branches and by a turn side connector which connects the two sides of a turn to one another. In electrical windings having parallel wires, an unfavourable wire position and a resulting linking of different magnetic flows may lead to disadvantageous compensating or circular currents which produce additional copper losses in the electric motor. In the stator according to the invention the compensating or circular currents in the parallel wires are avoided or at least decreased. According to the invention, the parallel wires (Z) which are arranged in the same groove (2) are in each case provided in a common groove section (yf) of the respective channel (2) having a groove section height (Hf), wherein the groove section (yf) in each case comprises, arranged one above the other in the radial direction, layered regions (y1 . . . yn), wherein in each case the parallel wires ( ) which belong to the same side of a turn are arranged in the same layered region (y1 . . . yn) of the groove section (yf).