公开(公告)号：US20210180667A1

公开(公告)日：2021-06-17

申请号：US16079850

申请日：2016-04-11

Applicant: GM Global Technology Operations LLC

Inventor： Chengwu DUAN ,  Jian YAO

IPC: F16H37/02

Abstract: A torque transmission device (100) includes a variator of a continuously variable unit (CVU) (20) arranged in parallel with a layshaft gearset (30). The CVU (20) includes a first pulley (22) rotatably coupled to a second pulley (24), and the layshaft gearset (30) includes a first gear element (32) meshingly engaged with an intermediate gear element (34) meshingly engaged with a second gear element (36). A transmission input member (12) is rotatably coupled to the first pulley (22) of the CVU (20), and is selectively rotatably coupled to the first gear element (32) of the layshaft gearset (30) by activation of a first clutch (37). A transmission output member (14) is rotatably coupled to the second pulley (24) of the CVU (20) and rotatably coupled to the second gear element (36) of the layshaft gearset (30). The transmission is disposed to operate in a continuously variable mode when the first clutch (37) is disengaged, and to operate in a fixed gear mode when the first clutch (37) is engaged.

公开(公告)号：US20210152041A1

公开(公告)日：2021-05-20

申请号：US16785121

申请日：2020-02-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Chengwu DUAN ,  Jian YAO ,  Yusheng ZOU

IPC: H02K1/27

Abstract: The present disclosure relates generally to rotors for electric motor assemblies and methods of making the same, and more specifically, to variable thickness rotors for axial flux motors. More specifically, annular-shaped rotors having interiorly disposed magnets for axial flux motors are provided in certain aspects. The variable thickness rotors may each include an annular-shaped body having a first thickness at a first radial position and a second thickness at a second radial position. The first radial position may be spaced apart from the second radial position. The first thickness may be greater than or equal to about 200% of the second thickness.

公开(公告)号：US20210152040A1

公开(公告)日：2021-05-20

申请号：US16785106

申请日：2020-02-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jian YAO ,  Mingyuan ZHANG ,  Chengwu DUAN ,  Yusheng ZOU

IPC: H02K1/27 ,  H02K1/14 ,  H02K3/52 ,  H02K1/02

Abstract: The present disclosure provides hybrid stator core components for an axial flux motor stator and methods for making the same. The hybrid stator core component includes a molded soft magnetic composite material and a laminated component. In one variation, a laminated insert comprising a plurality of insulated layers is non-releasably seated within a molded soft magnetic composite material. In another variation, a hybrid stator core component has a molded soft magnetic composite core and a laminated shell comprising a plurality of layers disposed around at least a portion of the molded soft magnetic composite core.

公开(公告)号：US20210143700A1

公开(公告)日：2021-05-13

申请号：US16779788

申请日：2020-02-03

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jian YAO ,  Chengwu DUAN ,  Mingyuan ZHANG

IPC: H02K3/28 ,  H02K1/18

Abstract: An axial flux motor having reduced spatial harmonics including a rotor with a plurality of magnets. A rotor shaft is coupled to the rotor. A stator faces the rotor and an air gap defined between the rotor and the stator. The stator includes a plurality of electromagnetic components defining a plurality of magnetic poles. The electromagnetic components include a plurality of posts, a plurality of slots, and a plurality of distributed electrically conductive windings disposed in and spanning across nonadjacent slots of the plurality of slots. At least one electrically conductive winding has a winding pitch span of greater than or equal to about 3 to less than or equal to about 20. The axial flux motor may include two rotors and one stator or alternatively two stators and one rotor. Such axial flux motors have short pitch provide desirable reduced spatial harmonics to enhance motor performance.

公开(公告)号：US20190093744A1

公开(公告)日：2019-03-28

申请号：US16079858

申请日：2016-04-11

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ying HUANG ,  Farzad Samie ,  Chengwu DUAN ,  Jian YAO

IPC: F16H37/08 ,  F16H3/72 ,  F16H9/18

Abstract: A transmission includes a continuously variable unit (CVU) (20) arranged in parallel with an expansion gearset (120). The CVU (20) includes a first pulley (22) that is rotatably coupled to a second pulley (24) and an input member (12). The expansion gearset (120) includes a planetary gearset (130) that is arranged in series with a coplanar second gearset (140), and the second gearset (140) includes a first gear (142) engaged with a layshaft gear (144). The second pulley (24) is rotatably couplable to the first gear (142) of the second gearset (140). The layshaft gear (144) is engaged with a ring gear (136) and a carrier member (134) which is rotatably couplable to an output member (14). The first pulley (22) is rotatably couplable to the sun gear (132) via a first clutch (115). The transmission operates in a continuously variable mode when the first clutch (115) is deactivated, and operates in a power split mode when the first clutch (115) is activated.