公开(公告)号：US11469634B2

公开(公告)日：2022-10-11

申请号：US16737434

申请日：2020-01-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xiaofeng Yang ,  Wei Zeng ,  Lei Hao ,  Srihari K. Gangaraj

IPC: H02K1/32 ,  H02K9/19 ,  H02K9/193 ,  F04C29/02 ,  F04C29/00

Abstract: A permanent magnet electric motor includes a shaft extending along a longitudinal axis, wherein the shaft defines a shaft jacket extending along a first direction, a rotor mounted on the shaft, a stator disposed about the rotor. The rotor defines a plurality of longitudinal channels each with the shaft jacket. The longitudinal channels are part of a rotor jacket. The rotor jacket includes a plurality of inlets fluidly interconnecting the shaft jacket and the plurality of the longitudinal channels. The rotor jacket includes an inner edge and an outer edge opposite the inner edge. The rotor jacket includes a plurality of outlets each in fluid communication with the plurality of longitudinal channels. Each of the outlets is closer to the inner edge than to the outer edge of the rotor jacket.

公开(公告)号：US20220131120A1

公开(公告)日：2022-04-28

申请号：US17078466

申请日：2020-10-23

Applicant: GM Global Technology Operations LLC

Inventor： Xiaofeng Yang

IPC: H01M2/12 ,  H01M2/10 ,  H01M10/656

Abstract: A battery includes a plurality of battery cells, each battery cell including a core, a source of thermal control fluid in fluid communication with the core, and a first pressure sensitive valve positioned between the core and the source of thermal control fluid, the first pressure sensitive valve adapted to open when pressure within the core exceeds a first pre-determined value.

公开(公告)号：US20210211012A1

公开(公告)日：2021-07-08

申请号：US16736185

申请日：2020-01-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xiaofeng Yang ,  Wei Zeng ,  Lei Hao ,  Srihari K. Gangaraj

IPC: H02K5/20 ,  H02K9/00 ,  H02K15/03

Abstract: A permanent magnet electric motor includes a shaft extending along a longitudinal axis and a rotor mounted on the shaft. The rotor is rotatable concomitantly with the shaft about the longitudinal axis, the rotor defines an innermost rotor edge. The innermost rotor edge is sized to receive the shaft. The permanent magnet electric motor further includes a stator. The shaft defines a jacket configured to receive a coolant. The jacket is disposed about the longitudinal axis. The jacket is elongated in a first direction. The first direction is parallel to the longitudinal axis. The rotor defines a plurality of longitudinal channels. Each of the plurality of longitudinal channel is elongated along the first direction, and each of the plurality of longitudinal channels is in fluid communication with the jacket to allow fluid flow between the jacket and the plurality of the longitudinal channels.

公开(公告)号：US20210135533A1

公开(公告)日：2021-05-06

申请号：US16671732

申请日：2019-11-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Farzad Samie ,  Alireza Fatemi ,  Derek F. Lahr ,  Erik B. Golm ,  Xiaofeng Yang

IPC: H02K5/128 ,  H02K1/27 ,  H02K9/00

Abstract: A rotary electric machine for use with coolant includes a stator and rotor assembly. The rotor assembly includes a rotor, rotor shaft, and first and second end rings. The rotor has inner and outer diameter surfaces and an embedded set of rotor magnets proximate the outer diameter surface. The shaft is connected to the rotor and defines a main coolant passage along an axis of rotation. Radial shaft coolant passages are in fluid communication with the main coolant passage. The end rings are positioned at opposing distal ends of the rotor. The shaft coolant passages direct the coolant into the rotor and/or the end rings such that the coolant flows axially through rotor cavities of the rotor and cools the rotor magnets via forced convection.

公开(公告)号：US12278550B2

公开(公告)日：2025-04-15

申请号：US17690071

申请日：2022-03-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Alireza Fatemi ,  Chih-Hung Yen ,  Farzad Samie ,  SeungHwan Keum ,  Thomas W. Nehl ,  Xiaofeng Yang

IPC: H02K9/22 ,  H02K1/20 ,  H02K9/20

Abstract: A motor stator includes a stator core having a plurality of stator teeth on an inner diameter thereof and defining a respective plurality of slots between the plurality of stator teeth. A plurality of windings are disposed in the slots. A heat pipe network includes a plurality of evaporator portions including a hollow structure disposed in at least a portion of the plurality of slots and including an interior having a wick extending along the interior of the hollow structure. A condenser portion has an interior portion in communication with the plurality of evaporator portions and is located at an end of the stator core. The wick of each of the plurality of evaporator portions extend into the condenser portion.

公开(公告)号：US20240128812A1

公开(公告)日：2024-04-18

申请号：US17968042

申请日：2022-10-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Farzad Samie ,  Xiaofeng Yang ,  Peng Peng

IPC: H02K1/20

CPC classification number: H02K1/20

Abstract: Embodiments include an electric motor and a vehicle including the same. The electric motor has a rotor and a stator having a cavity network include a first set of channels that are interleaved with a second set of channels in an axial direction, wherein each of the first set of channels and the second set of channels have a major axis oriented in a non-radial and non-tangential direction.

公开(公告)号：US20230223630A1

公开(公告)日：2023-07-13

申请号：US17647964

申请日：2022-01-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Xiaofeng Yang ,  Jian Gao ,  Scott E Parrish

IPC: H01M50/211 ,  H01M10/6561

CPC classification number: H01M50/211 ,  H01M10/6561

Abstract: Systems and methods for responding to in a battery. A battery cell for a battery system includes a core of a known battery type, and a cell film having an initial thickness, the cell film configured as a pouch enclosing the core. The battery cell has at least one engraved groove in the cell film, the at least one engraved groove characterized by a groove thickness that is less than the initial thickness. The groove thickness configured to break open responsive to a predetermined gas pressure or target temperature in the pouch.

公开(公告)号：US11606005B2

公开(公告)日：2023-03-14

申请号：US16860695

申请日：2020-04-28

Applicant: GM Global Technology Operations LLC

Inventor： Xiaofeng Yang ,  Wei Zeng ,  Lei Hao

IPC: H02K9/193 ,  H02K1/32

Abstract: An electric motor includes a housing, a stator having end turn windings, a rotatable central shaft, a rotor mounted onto the central shaft, and a rotor end ring mounted onto the central shaft adjacent the rotor, the rotor end ring including an annular disk shaped body having a circumferential outer diameter and a circumferential inner diameter and being formed from a thermally conductive material, a recess formed within a face of the body, an oil jacket formed within a back side of the body, the oil jacket comprising an annular channel having a circumferential outer wall and a circumferential inner wall, two inlets, each inlet extending radially between the inner diameter of the body and the inner wall of the oil jacket, a plurality of outlets, each outlet comprising a circumferential slot, the plurality of outlets equidistantly spaced around the face adjacent the circumferential inner wall of the oil jacket.