公开(公告)号：US20240410786A1

公开(公告)日：2024-12-12

申请号：US18331447

申请日：2023-06-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ehsan Jafarzadeh ,  Hossein Sadjadi ,  Paola Scarassatti Sant Anna ,  Dezhi Li ,  Sara Sadat Rahimifard ,  Yu Cao

IPC: G01M13/045 ,  F16C19/52

Abstract: Vehicles and systems and methods for health monitoring drive unit bearings in vehicles are provided. A system for health monitoring a drive unit bearing in a vehicle includes a sensor mounted to a drive unit of the vehicle and configured to provide a vibration signal; and a processor configured to: pre-process the vibration signal from the sensor to enhance a fault signature and form a frequency domain signal; and process the frequency domain signal to estimate a health stage of the drive unit bearing.

公开(公告)号：US20250052830A1

公开(公告)日：2025-02-13

申请号：US18366284

申请日：2023-08-07

Applicant: GM Global Technology Operations LLC

Inventor： Xinyu Du ,  Kevin Matthew Corr ,  Mateusz M. Nowak ,  Tung-Wah Frederick Chang ,  Sara Sadat Rahimifard ,  Hong Wong ,  Huaizheng Mu

IPC: G01R31/392 ,  G01R31/36 ,  G01R31/367 ,  G01R31/388 ,  G01R31/389

Abstract: A method of evaluating a low voltage (LV) battery system includes collecting parameters of the LV battery system, determining a health of the LV battery system based on one or more health indicators of a plurality of health indicators, and based on determining that the battery system is in an unhealthy condition, identifying a cause of the unhealthy condition based on selection of a set of health indicators. Determining the health includes identifying an enabling condition related to charging or discharging of the LV battery system, selecting a set of health indicators from the plurality of health indicators based on the identified enabling condition, estimating a value of each of the set of health indicators, and determining whether the LV battery system is in a healthy condition or the unhealthy condition based on the collected parameters and the value of each of the set of health indicators.