公开(公告)号：US20230027323A1

公开(公告)日：2023-01-26

申请号：US17380530

申请日：2021-07-20

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Shaomao Xu ,  Ryan Curtis Sekol ,  Jin Liu ,  Erik Damon Huemiller ,  Nicholas P. Irish ,  Dmitriy Bruder

IPC: H01M4/74 ,  H01M4/80 ,  H01M4/04

Abstract: Aspects of the disclosure include an electrode coating having a spatially varied porosity and a method of forming the same by using a porous current collector. An exemplary method can include forming a porous current collector having a bulk material and a plurality of voids. The porous current collector can be coated, infused, or otherwise saturated with an electrode coating having an active electrode material. The porous current collector and the electrode coating can be compressed in a calendering process to define the electrode film. The distribution of the plurality of voids in the porous current collector provides for regions of different calendering pressures during the calendering process. The regions of different calendering pressures leads to regions of higher and lower porosity in the resultant electrode film. In other words, an electrode film having a spatially varied porosity.

公开(公告)号：US20220404186A1

公开(公告)日：2022-12-22

申请号：US17350644

申请日：2021-06-17

Applicant: GM Global Technology Operations LLC

Inventor： Dmitriy Bruder ,  James R. Salvador ,  Raffaello Ardanese ,  Ryan C. Sekol ,  Thomas A. Yersak ,  Sean Robert Wagner ,  Ronald M. Lesperance

IPC: G01F22/00 ,  G01B3/38 ,  G01B7/16 ,  G01B11/02 ,  G01F23/00 ,  G01N30/02 ,  G01B5/06 ,  G01N33/00 ,  G06T7/62 ,  G06K7/10 ,  H01M10/42 ,  H01M50/609 ,  H01M10/058 ,  H01M4/04 ,  H01M4/139 ,  H01M4/62

Abstract: A quality control system analyzes the quality of a battery cell, with the battery cell defining a gas pouch configured to expand from a deflated configuration to an inflated configuration when filled with a gas formed during a cell formation process. The system comprises a computational system comprising a processor and a memory and a measurement instrument in electronic communication with the computational system. The measurement instrument is arranged to measure a distance defined by the gas pouch and transmit a signal to the computational system corresponding to the distance. The computational system is arranged to analyze the distance with the processor and determine a volumetric measurement of the gas within the gas pouch and compare the volumetric measurement to a threshold in the memory to assess a quality score for the battery cell. A corresponding method analyzes the quality of the battery cell with the quality control system.

公开(公告)号：US10514096B2

公开(公告)日：2019-12-24

申请号：US15727141

申请日：2017-10-06

Applicant: GM Global Technology Operations LLC

Inventor： Farzad Samie ,  Chunhao J. Lee ,  Derek F. Lahr ,  Dmitriy Bruder

IPC: F16H61/662 ,  F16H9/12

Abstract: The continuously variable transmission (CVT) assembly includes a CVT including a drive pulley, a driven pulley, and an endless rotatable device coupled between the drive pulley and the driven pulley. The CVT assembly also includes an actuator coupled to the drive pulley. The CVT assembly also includes an angle sensor coupled to the endless rotatable device such that the angle sensor is configured to measure an angular position of the endless rotatable device. The CVT assembly also includes a controller in communication with the actuator and the angle sensor. The controller is programmed to: (a) determine a speed ratio of the CVT based on the angular position of the endless rotatable device; and (b) control the actuator to adjust the clamping force exerted on the drive pulley in response to determining the speed ratio of the CVT.

公开(公告)号：US10166975B2

公开(公告)日：2019-01-01

申请号：US15387697

申请日：2016-12-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Derek F. Lahr ,  Chunhao J. Lee ,  Farzad Samie ,  Dongxu Li ,  Dmitriy Bruder

IPC: B60W20/40 ,  B60K6/387 ,  F16D47/04 ,  F16H41/24 ,  F16H45/02 ,  F16H61/14 ,  F16D21/00

Abstract: A transmission includes a housing, and a transmission input member. A torque converter includes a pump and a turbine. The turbine of the torque converter is connected to the transmission input member. A lock-up clutch selectively connects the pump and the turbine. A cover is connected to and rotatable with the pump. The cover at least partially defines an interior of the torque converter. A torque converter input member passes through the cover. A one way clutch interconnects the torque converter input member and the cover. An engine brake friction clutch is disposed within the interior of the torque converter. The engine brake friction clutch selectively interconnects the torque converter input member and the cover in torque communication to transfer a braking torque therebetween.