公开(公告)号：US20240047979A1

公开(公告)日：2024-02-08

申请号：US17879972

申请日：2022-08-03

Applicant: GM Global Technology Operations LLC

Inventor： Chunhao J. Lee ,  Yongjie Zhu ,  Suresh Gopalakrishnan ,  Dongxu Li ,  Chen-fang Chang ,  Junfeng Zhao ,  Matthew Rademacher

IPC: H02J7/00 ,  B60L58/21

CPC classification number: H02J7/0024 ,  B60L58/21

Abstract: A system in an electric or hybrid vehicle includes two or more battery packs to power one or more motors of the vehicle to move the vehicle. A controller dynamically activates an operational mode of the vehicle during vehicle operation, the operational mode being one of a plurality of possible operational modes. Each of the possible operational modes defines which of the two or more battery packs are connected to the one or more motors and, based on two or more of the two or more battery packs being connected to the one or more motors, also defines an interconnection among the two or more of the two or more battery packs. The plurality of possible operational modes includes a first operational mode defining a series connection between the two or more battery packs and second operational mode defining a parallel connection between the two or more battery packs.

公开(公告)号：US20210061278A1

公开(公告)日：2021-03-04

申请号：US16559738

申请日：2019-09-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC ,  Carnegie Mellon University

Inventor： Junfeng Zhao ,  Chen-fang Chang ,  Bharatkumar Hegde ,  Insu Chang ,  Ragunathan Rajkumar

IPC: B60W30/18 ,  G05D1/00 ,  B60W10/04 ,  B60W10/20 ,  B60W40/06

Abstract: A method for controlling automated driving operations of a vehicle includes determining vehicle origin and destination data, and generating a graphical representation of a road network with multiple candidate routes between the vehicle's origin and destination. Road-level data, including speed, turn angle, and/or gradient data, is received for each candidate route, and respective total energy uses are estimated for the vehicle to traverse across the candidate routes. Multiple candidate driving strategies, each having respective speed and acceleration profiles, are determined for the candidate route with the lowest estimated total energy use. An optimal candidate driving strategy is selected through a cost evaluation of the associated speed and acceleration profiles and forward movement simulations of the vehicle over a prediction horizon. Command signals are transmitted to the vehicle's steering and/or powertrain systems to execute control operations based on the optimal driving strategy and the candidate route with the lowest energy use.

公开(公告)号：US20190375403A1

公开(公告)日：2019-12-12

申请号：US16003223

申请日：2018-06-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yiran Hu ,  Junfeng Zhao ,  Steven E. Muldoon ,  Chen-Fang Chang

IPC: B60W30/14

Abstract: A system and method are provided for operating a powertrain control system. The method includes receiving data measured from a plurality of sensors, the measured data relating to distance dependent speed values, and receiving information from one or more vehicle modules, the vehicle module information relating to distance independent speed values. The method further includes building a speed trajectory profile for a horizon window that includes a plurality of speed change regions represented by at least some distance dependent speed values or at least some distance independent speed values, and creating a synthesized speed profile for the horizon window by processing the speed trajectory profile. The synthesized speed profile optimizes efficiency of the powertrain control system at each of the plurality of speed change regions.

公开(公告)号：US20190234750A1

公开(公告)日：2019-08-01

申请号：US15880918

申请日：2018-01-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Steven E. Muldoon ,  Yiran Hu ,  Junfeng Zhao ,  Vivek Vijaya Kumar

IPC: G01C21/34 ,  H04W24/08

Abstract: A system and method for routing based on a predicted connectivity quality is disclosed. The method includes receiving, by a controller, map information corresponding to a geographical area. The method also includes receiving, by the controller, wireless connectivity information corresponding to the geographical area. The method also includes generating output data of at least one route between a starting location and a destination location within the geographical area. The generating is based on the wireless connectivity information.