公开(公告)号：US20250149661A1

公开(公告)日：2025-05-08

申请号：US18500366

申请日：2023-11-02

Applicant: GM Global Technology Operations LLC

Inventor： Andrew C. Baughman ,  Shubham Gupta ,  Rajeev M. Ramanan ,  Xiumei Guo

IPC: H01M10/42

Abstract: A power distribution system includes a battery having multiple power cell groups. Each power cell group includes at least two power cells and a state of charge monitoring sensor. A controller is connected to each state of charge monitoring sensor. The controller is configured to run a process causing the processor to detect a slow self-discharge in at least one power cell group by monitoring a cell balancing metric for each power cell group and generating a set of accumulated balance metric values. The set of accumulated balancing metric values includes an accumulated balancing metric value corresponding to each power cell group in the plurality of power cell groups. The process identifies a reference value and a difference between the reference value and the cell balancing metric of each power cell with a cell balancing metric lower than the reference value and comparing the difference to a threshold.

公开(公告)号：US11624303B1

公开(公告)日：2023-04-11

申请号：US17651983

申请日：2022-02-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Timothy Wendling ,  Shubham Gupta

IPC: F01N3/02 ,  F02D41/02 ,  F02D41/00 ,  F02D41/40 ,  F02P5/15 ,  F01N3/023 ,  B60W20/16 ,  B60W20/40 ,  B60W50/02 ,  F02D13/02 ,  B60W10/10 ,  B60W10/06 ,  F02D41/12

Abstract: Systems and methods provide deceleration fuel cutoff regeneration of a gas particulate filter. A powertrain system includes an exhaust system containing the gas particulate filter, which is configured to collect particulate matter from an exhaust gas stream of the powertrain system. A temperature sensor is configured to monitor a temperature of the gas particulate filter. A loading monitor, such as a sensor and/or a model, is configured to provide a loading input of particulate loading of the gas particulate filter. At least one controller is configured to: determine, by comparing the loading input to stored values, whether the gas particulate filter requires the regeneration; effect a warmup of the gas particulate filter when the determination shows the gas particulate filter requires the regeneration; and initiate the regeneration when a value received from the temperature sensor meets a minimum threshold level.