公开(公告)号：US20210399354A1

公开(公告)日：2021-12-23

申请号：US17289387

申请日：2018-11-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： YiChun YAN ,  Dave G. RICH ,  Saad HASAN ,  Lyall K. WINGER ,  Varsha K. SADEKAR

IPC: H01M10/48 ,  H01M10/42

Abstract: A battery maintenance system includes an enclosure including a plurality of walls. A plurality of battery cells are located in the enclosure and surrounded by electrolyte. An electrolyte agitator such as a piezoelectric device is attached to at least one of the walls of the enclosure and is configured to selectively agitate the electrolyte.

公开(公告)号：US20200278936A1

公开(公告)日：2020-09-03

申请号：US16290495

申请日：2019-03-01

Applicant: GM Global Technology Operations LLC

Inventor： Suresh GOPALAKRISHNAN ,  Chandra S. NAMUDURI ,  Lyall K. WINGER ,  Dave G. RICH

IPC: G06F12/121 ,  G06F1/26

Abstract: A modular dynamically allocated capacity storage system (MODACS) is provided and includes a housing and a control module. The housing includes source terminals, switches, cells, and sensing module. The source terminals supplying power at a first voltage potential to a first plurality of loads and power at a second voltage potential to a second plurality of loads. The cells are configured to supply power to each of the source terminals based on states of the switches. The sensing modules are configured to determine parameters of each of the cells and generate corresponding status signals. The control module is configured to receive a power request signal, and based on the power request signal and the parameters of each of the cells, determine a connected configuration for the cells relative to each other and the plurality of source terminals and set states of the switches according to the connected configuration.

公开(公告)号：US20240283057A1

公开(公告)日：2024-08-22

申请号：US18360086

申请日：2023-07-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Yong LU ,  Zhe Li ,  Qili SU ,  Dave G. RICH ,  Haijing LIU

IPC: H01M12/02

CPC classification number: H01M12/02 ,  H01M2300/0085

Abstract: A solid-state battery cell includes an anode electrode comprising an anode current collector and an anode coating. A cathode electrode comprises a cathode current collector and a cathode coating, wherein the anode electrode and the cathode electrode exchange lithium ions. A separator layer is arranged between the anode electrode and the cathode electrode. A first capacitor electrode is arranged at least one of between the anode coating and a first side of the separator layer, between the anode coating and the anode current collector, between a second side of the separator layer and the cathode coating, and between the cathode coating and the cathode current collector.

公开(公告)号：US20240038998A1

公开(公告)日：2024-02-01

申请号：US17888613

申请日：2022-08-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhe LI ,  Dave G. RICH ,  Meiyuan WU ,  Jingyuan LIU ,  Haijing LIU

IPC: H01M4/66 ,  H01M10/0585

CPC classification number: H01M4/667 ,  H01M4/661 ,  H01M4/668 ,  H01M4/663 ,  H01M10/0585 ,  H01M2004/021

Abstract: A battery cell includes a plurality of cathodes and a plurality of anodes. A plurality of solid electrolyte layers are arranged between first adjacent ones of the plurality of cathodes and the plurality of anodes. A plurality of clad current collectors are arranged between second adjacent ones of the plurality of cathodes and the plurality of anodes. The plurality of clad current collector includes a first foil layer, a second foil layer and a thermal interface layer including adhesive and at least one material that increases thermal and electrical conductivity of the thermal interface layer.

公开(公告)号：US20230264598A1

公开(公告)日：2023-08-24

申请号：US17676936

申请日：2022-02-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jun-mo KANG ,  Chen-Fang CHANG ,  Dave G. RICH

IPC: B60L58/19 ,  B60L58/21 ,  B60L3/00

CPC classification number: B60L58/19 ,  B60L3/0046 ,  B60L58/21

Abstract: A battery system includes: at least two battery modules, each including at least three strings of battery cells that are configured to, at different times be: connected in series and to a first positive terminal via first switches; connected in parallel and to a second positive terminal via second switches; and disconnected from both of the first and second positive terminals; and a switch control module configured to: during operation in a first power mode: determine periods of phases, respectively; and determine periods for the strings, respectively, to be connected to the second positive terminal during the phases; during operation in a second power mode: set the periods of the phases, respectively, to be equal in length; and set the periods for the strings, respectively, to be equal in length; and selectively actuate the switches based on the periods of the phases and the periods for the strings.

公开(公告)号：US20230219459A1

公开(公告)日：2023-07-13

申请号：US18093413

申请日：2023-01-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Saad HASAN ,  Dave G. RICH

IPC: B60L58/22 ,  H02J7/00

CPC classification number: B60L58/22 ,  H02J7/00712 ,  B60L2240/547

Abstract: A battery system includes at least one battery including a plurality of cells and a hybrid control module configured to monitor a differential capacity of the at least one battery, determine when the monitored differential capacity of the at least one battery corresponds to a predetermined differential capacity of the at least one battery, and determine a state of charge of the battery in response to the determination that the monitored differential capacity corresponds to the predetermined differential capacity.

公开(公告)号：US20230179000A1

公开(公告)日：2023-06-08

申请号：US17541097

申请日：2021-12-02

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Jun-mo KANG ,  Charles W. WAMPLER, II ,  Dave G. RICH

IPC: H02J7/00

CPC classification number: H02J7/0014 ,  H02J7/0024 ,  H02J7/0048

Abstract: A battery system includes: a first positive terminal; a second positive terminal; a negative terminal; switches; two battery modules, each including three strings of battery cells that are configured to, at different times be: connected in series and to the first positive terminal via first ones of the switches; connected in parallel and to the second positive terminal via second ones of the switches; and disconnected from both of the first and second positive terminals; and a switch control module configured to: determine state of charges (SOCs) of the strings of battery cells, respectively; determine, using model predictive control, periods of phases, respectively, to balance SOCs of the battery modules; determine, using model predictive control, periods for the strings, respectively, including setting one of the periods for one of the strings to be included in at least two of the phases; and selectively actuate the switches based on the periods of the phases and the periods for the strings of battery cells.

公开(公告)号：US20200276911A1

公开(公告)日：2020-09-03

申请号：US16290541

申请日：2019-03-01

Applicant: GM Global Technology Operations LLC

Inventor： Dave G. RICH ,  Lyall K. Winger ,  Saad Hasan ,  Varsha K. Sadekar ,  Robert A. De Stefano ,  Gary W. Gantt, JR.

IPC: B60L58/19 ,  H02J7/00

Abstract: In an example, a battery control system is disclosed. The battery control system can include a plurality of batteries, a first terminal, a second terminal, and a third terminal. The battery control system also includes a plurality of switches configured to connect a first battery of the plurality of batteries to and from the first terminal and the third terminal and to connect a second battery of the plurality of batteries to and from the second terminal and the third terminal. The battery control system also discloses a switch resistance modulation module configured to modulate a resistance of at least one switch of the plurality of switches between zero ohms and infinity ohms based on a battery parameter and a control signal.

公开(公告)号：US20200235444A1

公开(公告)日：2020-07-23

申请号：US16487914

申请日：2017-03-22

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhiqiang YU ,  Haijing LIU ,  Xiaochao QUE ,  Dave G. RICH ,  Saad HASAN ,  Meiyuan WU

IPC: H01M10/615 ,  H01M4/66 ,  H01M4/04 ,  H01M4/80 ,  H01M4/75

Abstract: Lithium-based and sodium-based batteries and capacitors using metal foil current collectors, coated with porous layers of particles of active electrode materials for producing an electric current, may adapted to produce heat for enhancing output when the cells are required to periodically operate during low ambient temperatures. A self-heating cell may be placed in heat transfer contact with a working cell that is temporarily in a cold environment. Or one or both of the anode current collector and cathode current collectors of a heating cell may be formed with shaped extended portions, uncoated with electrode materials, through which cell current may be passed for resistance heating of the extended current collector areas. These extended current collector areas may be used to heat the working area of the cell in which they are incorporated, or to contact and heat an adjacent working cell.

公开(公告)号：US20240396077A1

公开(公告)日：2024-11-28

申请号：US18365365

申请日：2023-08-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Zhe LI ,  Qili SU ,  Yong LU ,  Dave G. RICH ,  Haijing LIU

IPC: H01M10/056

Abstract: A solid-state battery cell includes an anode electrode comprising an anode current collector, anode active material, a solid electrolyte, and a gel polymer electrolyte. A cathode electrode comprises a cathode current collector, a cathode active material, a solid electrolyte, and the gel polymer electrolyte. A separator layer comprises the gel polymer electrolyte and a solid electrolyte composite including a solid electrolyte coating arranged on an outer surface of an oxide core.