公开(公告)号：US20220158512A1

公开(公告)日：2022-05-19

申请号：US16949902

申请日：2020-11-19

Applicant: Atieva, Inc

Inventor： Yateendra Deshpande ,  Vivek Meenakshi Sundaram ,  Emad Dlala

IPC: H02K3/12 ,  H02K3/28 ,  H02K15/085

Abstract: An electric motor comprises: a rotor having poles equaling a first number; and a stator having slots equaling a second number, the stator having stator windings formed by conductors wound in a wave pattern around the stator, wherein a third number of the conductors are located in each of the slots, wherein the conductors form three balanced parallel paths through the slots, each of the conductors in the three balanced parallel paths undergoing a same number of pitch turns, each of the pitch turns being either a standard pitch turn or a nonstandard pitch turn, the standard pitch turn involving wrapping around slots equaling the second number divided by the first number, the nonstandard pitch turn involving wrapping around more or fewer slots than the standard pitch turn, wherein each of the three balanced parallel paths forms a repeating pattern throughout the slots.

公开(公告)号：US20250001875A1

公开(公告)日：2025-01-02

申请号：US18704784

申请日：2022-10-26

Applicant: ATIEVA, INC.

Inventor： Yateendra Deshpande ,  Sameer Sudhir Deshmukh

IPC: B60L15/20

Abstract: A method of determining rotor angle limits for static heating of an electric motor comprises: applying a brake to a wheel of a vehicle, wherein the vehicle has an electric motor; while the brake is applied, providing a first current to the electric motor to generate first torque not exceeding a brake torque limit of the brake; while the brake is applied, providing a second current to the electric motor to generate second torque, the second current being opposite, and about equal, to the first current; determining a first rotor rotation angle associated with the first current, and a second rotor rotation angle associated with the second current; and setting the first and second rotor rotation angles as first and second rotor angle limits, respectively, for static heating of the electric motor.

公开(公告)号：US20240022128A1

公开(公告)日：2024-01-18

申请号：US18349469

申请日：2023-07-10

Applicant: Atieva, Inc.

Inventor： Emad Dlala ,  Yateendra Deshpande ,  Vivek Meenakshi Sundaram

IPC: H02K1/276

CPC classification number: H02K1/276 ,  H02K2201/06

Abstract: An electric motor comprises: a stator having slots; and a rotor including a stack of rotor laminations, the rotor comprising: a first substack of the rotor laminations, wherein the rotor laminations in the first substack include first rivet holes and first magnet holes with first permanent magnets; and a second substack of the rotor laminations, wherein the rotor laminations in the second substack include second rivet holes and second magnet holes with second permanent magnets, and wherein an orientation of the first sub stack and the second substack relative to each other provides the rotor with a skew.

公开(公告)号：US11855498B2

公开(公告)日：2023-12-26

申请号：US16949902

申请日：2020-11-19

Applicant: Atieva, Inc.

Inventor： Yateendra Deshpande ,  Vivek Meenakshi Sundaram ,  Emad Dlala

IPC: H02K3/12 ,  H02K3/28 ,  H02K15/085 ,  H02K17/12

CPC classification number: H02K3/12 ,  H02K3/28 ,  H02K15/085 ,  H02K17/12

Abstract: An electric motor comprises: a rotor having poles equaling a first number; and a stator having slots equaling a second number, the stator having stator windings formed by conductors wound in a wave pattern around the stator, wherein a third number of the conductors are located in each of the slots, wherein the conductors form three balanced parallel paths through the slots, each of the conductors in the three balanced parallel paths undergoing a same number of pitch turns, each of the pitch turns being either a standard pitch turn or a nonstandard pitch turn, the standard pitch turn involving wrapping around slots equaling the second number divided by the first number, the nonstandard pitch turn involving wrapping around more or fewer slots than the standard pitch turn, wherein each of the three balanced parallel paths forms a repeating pattern throughout the slots.