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    ENERGY-DISSIPATING COVER AND METHODS FOR MAKING THE COVER
    11.
    发明申请
    ENERGY-DISSIPATING COVER AND METHODS FOR MAKING THE COVER 有权

    公开(公告)号：US20220039278A1

    公开(公告)日：2022-02-03

    申请号：US16940452

    申请日：2020-07-28

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Erik B. Golm ,  Louis G. Hector, JR. ,  Anil K. Sachdev ,  Andrew C. Bobel ,  Kevin B. Rober ,  Jianfeng Wang

    IPC: H05K5/02 ,  B21D37/10 ,  B21D37/16

    Abstract: An energy-dissipating cover for covering a component sensitive to mechanical impulse includes a sheet of selected ferrous or aluminum alloy, the sheet having a top surface, a bottom surface, an outer perimeter, an overall area within the outer perimeter and a nominal thickness of no more than 2.5 mm. The sheet is configured for connection with one or more external structures at a plurality of connection points within the outer perimeter, wherein the overall area comprises a plurality of supported areas and at least one unsupported area. Embossments are formed within the at least one unsupported area and extend outward from the bottom surface. The embossments are shaped, sized and arranged so as to limit orthogonal deflection of the sheet from a mechanical impulse directed normal to the bottom surface of the sheet at the plurality of embossments.

    Methods for manufacturing connecting rod assemblies and crankshaft assemblies
    12.
    发明授权
    Methods for manufacturing connecting rod assemblies and crankshaft assemblies 有权

    公开(公告)号：US11117191B2

    公开(公告)日：2021-09-14

    申请号：US16175089

    申请日：2018-10-30

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Andrew C. Bobel ,  Tyson W. Brown ,  Whitney A. Poling

    IPC: B22F5/00 ,  F16C7/02 ,  F16C3/06 ,  B22F10/20 ,  B33Y80/00 ,  B33Y10/00

    Abstract: A connecting rod comprises a shaft connecting a first end including a first bore with a second end including a second bore. Methods for forming and assembling a connecting rod and crankshaft assembly include fabricating the second end of the connecting rod via additive manufacturing such that the second end comprises a first and second weakened regions on opposing sides of the second bore, and breaking the second end of the connecting rod at the first and second weakened regions to form a connecting rod assembly comprising a second end base and a second end cap, wherein the base comprises a first fracture face and a second fracture face which each respectively correspond to a first fracture face and a second fracture face of the cap. The methods can further include mating the base and the cap such that a crankpin of a crankshaft is disposed within the second bore.

    METHODS FOR FORMING GRADIENT METALLIC BODIES VIA ADDITIVE MANUFACTURING
    14.
    发明申请
    METHODS FOR FORMING GRADIENT METALLIC BODIES VIA ADDITIVE MANUFACTURING 审中-公开

    公开(公告)号：US20200306885A1

    公开(公告)日：2020-10-01

    申请号：US16371520

    申请日：2019-04-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Andrew C. Bobel ,  Louis G. Hector, JR.

    IPC: B23K26/342 ,  B22F3/105 ,  B23K26/02 ,  B22F1/00

    Abstract: A method for forming a gradient metallic body can include forming a first metallic deposit by providing a first quantity of metal feedstock and selectively applying energy via an energy source to the first quantity of metal feedstock, and iteratively forming additional metallic deposits by providing an additional quantity of metal feedstock contiguous with a previously formed metallic deposit and selectively applying energy via the energy source to the additional quantity of metal feedstock. The energy applied via the energy source while forming the additional metallic deposits is iteratively varied such that the gradient metallic body is formed and comprises a first end, a second end, and a middle portion, wherein a material characteristic of the gradient metallic body transitions in the middle portion between the first end and the second end.

    Pre-lithiation of battery electrode material
    15.
    发明授权
    Pre-lithiation of battery electrode material 有权

    公开(公告)号：US12142751B2

    公开(公告)日：2024-11-12

    申请号：US16912150

    申请日：2020-06-25

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Andrew C. Bobel ,  Anil K. Sachdev ,  Jeffrey D. Cain ,  Leng Mao

    IPC: H01M4/04 ,  H01M4/38 ,  H01M4/46 ,  H01M10/0525

    Abstract: A method for making a pre-lithiated electrode for a lithium ion battery cell, a method for making a battery with a pre-lithiated electrode, and an electric vehicle with a pre-lithiated electrode are provided. An exemplary method for making a pre-lithiated electrode for a lithium ion battery cell includes electrochemically connecting a magnesium-lithium alloy to the electrode. Further, the method includes pre-lithiating the electrode by transferring lithium ions from the magnesium-lithium alloy to the electrode. Also, the method includes electrochemically disconnecting the magnesium-lithium alloy from the electrode.

    RESISTANCE WELDING METHODS, ASSEMBLIES, AND VEHICLES
    17.
    发明公开
    RESISTANCE WELDING METHODS, ASSEMBLIES, AND VEHICLES 审中-公开

    公开(公告)号：US20230373024A1

    公开(公告)日：2023-11-23

    申请号：US17663928

    申请日：2022-05-18

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Zhenke Teng ,  Tingting Zhang ,  Andrew C. Bobel ,  Jason M. Brown

    IPC: B23K11/18 ,  B23K11/11 ,  B23K11/16

    CPC classification number: B23K11/185 ,  B23K11/115 ,  B23K11/163 ,  B23K2103/10

    Abstract: Methods for resistance welding, resistance-welded assemblies, and vehicles including resistance-welded assemblies are provided. The method includes providing a workpiece stack-up including first and second workpieces and an intermediate material located between the faying surfaces thereof. At least one of the first workpiece and the second workpiece is formed of a first metal alloy with a first concentration of an alloying element, and the intermediate material is formed of a second metal alloy of the first metal and a second concentration of the alloying element that is less than the first concentration. The method includes bringing electrodes into contact with the workpieces, passing an electrical current therebetween to form a molten weld pool, and cooling the molten weld pool into a weld nugget that forms all or part of a weld joint between the workpieces and has a composition that is a mixture of the workpieces and the intermediate material.

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