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公开(公告)号：US20250105688A1
公开(公告)日：2025-03-27
申请号：US18474605
申请日：2023-09-26
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Xiaofeng Yang , Peng Peng , Farzad Samie
Abstract: A radial flux electric motor includes a stator having a radially inner stator surface and a rotor mounted inside the stator. The rotor defines a rotational axis and has axially opposite rotor ends and a radially outer rotor surface positioned proximate the radially inner stator surface, thereby establishing an airgap therebetween. The rotor also includes a fluid circulation arrangement having at least one fluid channel extending through the rotor to the radially outer rotor surface and configured to receive a liquid via a first passage and a gas via at least one second passage. The fluid circulation arrangement is also configured to direct the liquid and the gas, via centrifugal force, into the airgap as the rotor rotates inside the stator sufficiently to discharge the liquid and the gas out of the airgap at the axially opposite ends of the rotor, thereby cooling the electric motor.
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公开(公告)号：US20230088026A1
公开(公告)日：2023-03-23
申请号：US17478297
申请日：2021-09-17
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Xiaofeng Yang , Jian Gao , Scott E. Parrish
IPC: B60L58/26 , H01M10/613 , H01M10/625 , H01M10/44 , B60L3/00
Abstract: A control system to prevent thermal runaway includes an enclosure housing a plurality of battery cells of a battery module. Each of the battery cells is a pouch-type battery cell includes a core and a pouch enclosing the core and including one or more portions along one or more side surfaces thereof that are attached together by adhesive to form a seal. The adhesive is configured to release the seal when pressure within the pouch exceeds a predetermine pressure value. A gas sensor is configured to sense a predetermined gas in the enclosure. A valve is configured to selectively deliver thermal control fluid from a source. A controller is configured to open the valve in response to the gas sensor sensing the predetermined gas in the enclosure.
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公开(公告)号：US11476733B2
公开(公告)日：2022-10-18
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
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.
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公开(公告)号：US11043875B2
公开(公告)日：2021-06-22
申请号：US16196379
申请日：2018-11-20
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Alireza Fatemi , Xiaofeng Yang , Thomas W. Nehl , Farzad Samie , Srihari K. Gangaraj
Abstract: An apparatus for cooling an electric machine includes a plurality of fluid channels disposed in a first surface that surrounds at least part of the electric machine. Each of the plurality of fluid channels defines a circumferential path in the first surface, including a first channel section extending at least substantially parallel to first and second circumferences defined by ends of the electric machine, and including a second channel section configured to direct a cooling fluid between a central region of the first surface and an end region of the first surface. The apparatus also includes an outer shell configured to surround the first surface and define a fluid tight chamber between the first surface and the outer shell, the outer shell having at least one inlet through which the cooling fluid is introduced into the chamber and at least one outlet from which the cooling fluid exits the volume.
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公开(公告)号：US12107285B2
公开(公告)日：2024-10-01
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.
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Patent Agency Ranking
公开(公告)号：US20240235453A1
公开(公告)日：2024-07-11
申请号：US18150392
申请日：2023-01-05
Applicant: GM Global Technology Operations LLC
Inventor： Chunhao J. Lee , Farzad Samie , Xiaofeng Yang
CPC classification number: H02P29/0027 , B60L15/20 , B60L2240/421 , B60L2240/425
Abstract: A system and control method for displacing a fluid out of an air gap of a propulsion motor is based upon at least one electric propulsion motor parameter and may include actuating an air injection pump configured to inject air into the air gap.
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7.发明公开公开(公告)号：US20240145858A1
公开(公告)日：2024-05-02
申请号：US17973933
申请日：2022-10-26
Applicant: GM Global Technology Operations LLC
Inventor： SeungHwan Keum , Ronald O. Grover, JR. , Jian Gao , Xiaofeng Yang
IPC: H01M50/375 , B60L50/64 , H01M10/48 , H01M50/249
CPC classification number: H01M50/375 , B60L50/64 , H01M10/486 , H01M50/249 , B60L58/24 , H01M2220/20
Abstract: A rechargeable energy storage system (RES S) including a thermal runaway propagation (TRP) mitigation system includes a housing having at least one outlet, a plurality of energy storage cells arranged in the housing, and at least one duct extending along the plurality of energy storage cells. The at least one duct is fluidically connected to the at least one outlet. A gas delivery system including a gas generation system is operable to deliver an amount of inert gas into the housing to purge gases from one or more of the plurality of energy storage cells through the at least one outlet.
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公开(公告)号：US20210211008A1
公开(公告)日：2021-07-08
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
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.
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公开(公告)号：US20200161938A1
公开(公告)日：2020-05-21
申请号：US16196379
申请日：2018-11-20
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Alireza Fatemi , Xiaofeng Yang , Thomas W. Nehl , Farzad Samie , Srihari K. Gangaraj
Abstract: An apparatus for cooling an electric machine includes a plurality of fluid channels disposed in a first surface that surrounds at least part of the electric machine. Each of the plurality of fluid channels defines a circumferential path in the first surface, including a first channel section extending at least substantially parallel to first and second circumferences defined by ends of the electric machine, and including a second channel section configured to direct a cooling fluid between a central region of the first surface and an end region of the first surface. The apparatus also includes an outer shell configured to surround the first surface and define a fluid tight chamber between the first surface and the outer shell, the outer shell having at least one inlet through which the cooling fluid is introduced into the chamber and at least one outlet from which the cooling fluid exits the volume.
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公开(公告)号：US20240348126A1
公开(公告)日：2024-10-17
申请号：US18298724
申请日：2023-04-11
Applicant: GM Global Technology Operations LLC
Inventor： Farzad Samie , Peng Peng , Xiaofeng Yang , Derek Frei Lahr
CPC classification number: H02K9/00 , H05K7/20845
Abstract: A vehicle, system, and method of operating a motor of the vehicle. The motor includes a stator and a rotor. A motor controller controls a motor torque of the motor. A sensor measures a motor speed. A rotor temperature sensor measures a temperature of the rotor. A stator temperature sensor measures a temperature of the stator. A processor determines a stator heat loss at the stator based on the motor torque, the motor speed, and the stator temperature, determines a rotor heat loss at the rotor based on the motor torque, the motor speed, and the rotor temperature, and controls flow of a stator coolant stream through the stator at a stator coolant flow rate based on the stator heat loss and a rotor coolant stream through the rotor at a rotor coolant flow rate based on the rotor heat loss.
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