公开(公告)号：US20250047152A1

公开(公告)日：2025-02-06

申请号：US18643064

申请日：2024-04-23

Applicant: HYUNDAI MOBIS CO., LTD.

Inventor： Yeong Woo SEO ,  Jong Jin PARK

IPC: H02K1/20 ,  H02K1/18 ,  H02K5/20 ,  H02K5/22

Abstract: The present disclosure relates to a system for cooling a stator core of an electric motor. The motor cooling system according to the present disclosure is advantageous in that the number of parts can be minimized, and cooling efficiency can be maximized with a cooling fluid evenly distributed to a heat-generating area, by improving a typical design (a core press-fit stop end) of a housing supporting the stator core to add a fluid guide and a nozzle shape or by applying a nozzle ring formed in a curved shape and capable of spraying the cooling fluid after being received and stored to an end of the housing.

公开(公告)号：US20250015649A1

公开(公告)日：2025-01-09

申请号：US18710310

申请日：2022-11-18

Applicant: David SCHOONE

Inventor： David SCHOONE

IPC: H02K1/20 ,  H02K1/2796 ,  H02K7/00

Abstract: An electric motor is particularly intended for installation within a wheel hub of a motorcycle. The electric motor is constructed in the manner of a double-sided axial flux electric machine and comprises a liquid-cooled stator and a two-sided rotor with permanent magnets arranged on both sides of the stator. The stator includes a cooling body that in a form-fitting manner accommodates the coils. The cooling body features a cooling core with a plurality of cooling fins, between which the coils are arranged and within which radial channels are formed. The radial channels are interconnected at the radially outer ends of the cooling fins. All radial channels terminate at the radially inner ends of the cooling fins into a distributor channel.

公开(公告)号：US12191752B2

公开(公告)日：2025-01-07

申请号：US17994909

申请日：2022-11-28

Applicant: ANHUI WELLING AUTO PARTS CO., LTD. ,  GUANGDONG WELLING AUTO PARTS CO., LTD.

Inventor： Xiaomin Pu ,  Fei Wang ,  Jinjun Gao ,  Yiming Hu ,  Jintao Chen

IPC: H02K9/19 ,  H02K1/20 ,  H02K1/32 ,  H02K5/20

Abstract: A motor and a vehicle are provided. The motor has a housing, a stator, a first end cove, a second end cover, a first oil injection ring, a rotor, a first end plate, and a second end plate. The rotor includes a rotor core, a rotor oil path formed in the rotor core, a rotor magnet steel, a rotation shaft, and a rotation shaft oil path formed in the rotation shaft. A first oil groove is defined on an inner side surface of the first end plate opposite to the rotor core, and is in communication with the rotation shaft oil path and the rotor oil path, respectively. A first end plate oil outlet is defined in an outer side surface of the first end plate and communicates the first oil groove with an inner cavity of the housing.

公开(公告)号：US12184157B2

公开(公告)日：2024-12-31

申请号：US17376020

申请日：2021-07-14

Applicant: Dana Automotive Systems Group, LLC

Inventor： Steven Vanhee ,  Joachim Druant ,  Thibault Devreese

IPC: H02K9/19 ,  H02K1/20 ,  H02K3/24 ,  H02K5/20

Abstract: Systems are provided for an electronic drive unit. In one example, the electronic drive unit comprises a cooling passage integrally arranged therein, wherein the cooling passage is sealed via laminations of the stator. The laminations are further shaped to jet oil from the cooling passage onto end-windings.

公开(公告)号：US20240413721A1

公开(公告)日：2024-12-12

申请号：US18702967

申请日：2022-10-20

Applicant: ZF FRIEDRICHSHAFEN AG

Inventor： Konrad BUETTNER ,  Matthias CUDOK ,  Ignacio LOBO CASANOVA ,  Michael ZÖLLER

IPC: H02K15/12 ,  H02K1/20 ,  H02K3/34

Abstract: A method for producing an electric machine, in particular an electric machine for a motor vehicle, having a can that delimits a rotor chamber of the electric machine from a stator chamber of the electric machine. The method provides for introducing a stator main part into a molding tool having at least one element for keeping an area free, the element engaging into a stator groove of the stator main part when the stator main part is received in the molding tool and defining a receiving region for at least one conductor in the stator groove; introducing a main part, in particular a tubular main part, into an opening of the stator main part; injecting a curable resin material; hardening the resin material; and removing the stator main part from the molding tool.

公开(公告)号：US20240413710A1

公开(公告)日：2024-12-12

申请号：US18678442

申请日：2024-05-30

Applicant: Dana Automotive Systems Group, LLC

Inventor： Eric M. ENGERMAN ,  Ryan D. NELMS ,  Gopinathan THIRUNAVUKKARASU

IPC: H02K9/193 ,  H02K1/20 ,  H02K5/20

Abstract: Methods and systems for an electric machine. The electric machine includes, in one example, a sleeve that encloses a stator and a rotor, a housing removably coupled to the sleeve and circumferentially enclosing a portion of the sleeve. The electric machine further includes a fluid inlet that extends through at least one of the sleeve and the housing and is in fluidic communication with a stator cooling assembly.

公开(公告)号：US20240380279A1

公开(公告)日：2024-11-14

申请号：US18314927

申请日：2023-05-10

Applicant: GM Global Technology Operations LLC

Inventor： Xiaofeng Yang ,  Peng Peng ,  Farzad Samie

IPC: H02K9/19 ,  H02K1/20 ,  H02K1/32 ,  H02K21/14

Abstract: An electric propulsion motor system includes a rotary electric propulsion motor that has a stator and a rotor. An air gap is present between the stator and rotor. A fluid circulation system provides pressurized liquid and gas, which is directed through fluid passages in the stator and/or rotor and into the air gap to establish a mixture of pressurized liquid and pressurized gas therein. The pressurized gas dilutes the mixture and pushes the pressurized liquid and pressurized gas against the stator and rotor, forcing it to exit the air gap at the opposite ends of the motor leaving the air gap free of accumulated liquid.

公开(公告)号：US20240356391A1

公开(公告)日：2024-10-24

申请号：US18684892

申请日：2022-10-04

Applicant: BAYERISCHE MOTOREN WEREK AKTIENGESELLSCHAFT

Inventor： Wilfried BARTH ,  Peter DAVISON ,  Thomas EIDENBOECK ,  Andreas WAGNER

IPC: H02K1/20 ,  H02K9/19

CPC classification number: H02K1/20 ,  H02K9/19

Abstract: A stator for an electric machine of a motor vehicle includes with a laminated core in which at least one cooling channel runs, through which a cooling fluid for cooling the stator can flow, and at least one winding which is held on the laminated core and has a winding head. At least one ring is provided which adjoins a laminated core at least partially in the axial direction of the stator, has at least one guide channel which is connected fluidically to the cooling channel and through which the cooling fluid from the cooling channel can flow as a result, which guide channel has at least one outlet opening which is directed towards the winding head and via which the cooling fluid which flows through the cooling channel can be discharged from the ring and can be sprayed against the winding head.

公开(公告)号：US20240339875A1

公开(公告)日：2024-10-10

申请号：US18297855

申请日：2023-04-10

Applicant: ABB Schweiz AG

Inventor： William E. Martin ,  John M. Zedek ,  Stephen T. Evon

IPC: H02K1/20 ,  H02K5/15 ,  H02K15/02

CPC classification number: H02K1/20 ,  H02K5/15 ,  H02K15/02

Abstract: A lamination for a stator of an electric motor includes: a material sheet having a generally circular shape with a center and a radial direction, an outer contour, and an inner contour, the outer and inner contours being generally concentric with the center. The inner contour is defined by an arrangement of a plurality of teeth and a plurality of stator slots, each tooth of the plurality of teeth having one stator slot of the plurality of stator slots to a first side of the tooth and one stator slot of the plurality of stator slots to a second side of the tooth, the inner contour defining a rotor hole for receiving a rotor of the electric motor. The material sheet has a plurality of internal cooling holes arranged around the rotor hole.

公开(公告)号：US20240339872A1

公开(公告)日：2024-10-10

申请号：US18225268

申请日：2023-07-24

Applicant: Hitachi Astemo Electric Motor Systems, Ltd.

Inventor： Takayuki KOIZUMI ,  Kiyoshi ITO

IPC: H02K1/16 ,  H02K1/14 ,  H02K1/20 ,  H02K3/24

CPC classification number: H02K1/16 ,  H02K1/146 ,  H02K1/20 ,  H02K3/24

Abstract: The rotating electric machine comprises: a stator core that has a first stator core portion and a second stator core portion, and an air gap portion, the first and the second stator core portions having slots and being divided in the axial direction, the air gap portion being formed between the first stator core portion and the second stator core portion by making the first stator core portion and the second stator core portion face each other in the axial direction; a plurality of coil conductors inserted into the slots; a wall portion covering the air gap portion on the inner circumference side of the air gap portion; and a coolant flow passage that sends a coolant supplied from the outer circumference side of the stator core to the air gap portion through between the plurality of coil conductors to both end surfaces of the stator core.