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    RESISTANCE SPOT WELDING MANUFACTURE AND METHOD OF FORMING SAME
    2.
    发明申请
    RESISTANCE SPOT WELDING MANUFACTURE AND METHOD OF FORMING SAME 审中-公开
    电阻点焊接制造及其形成方法

    公开(公告)号：US20130327745A1

    公开(公告)日：2013-12-12

    申请号：US13967712

    申请日：2013-08-15

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Chih-Chang Chen ,  Michael J. Bland ,  Daniel C. Hutchinson

    IPC: B23K11/00

    CPC classification number: B23K11/00 ,  B23K11/0033 ,  B23K11/115 ,  B23K33/00 ,  B32B3/263 ,  C22C1/02 ,  Y10T428/12201 ,  Y10T428/12347 ,  Y10T428/12965

    Abstract: A method of forming a resistance spot welding manufacture includes sandwiching a third metal layer between first and second metal layers to form a workpiece. The second layer has a surface defining an embossed region. The first layer has a first thickness, the third layer has a third thickness, and the second layer has a second thickness that is less than the first and third thicknesses so that a ratio of the first thickness to the second thickness is greater than about 2:1. The method includes positioning the workpiece between a first and second electrode so that the workpiece is disposed in electrically-conductive relationship with the first and the second electrodes, and applying an electrical current through the first electrode to concurrently melt the first and third layers and the surface at the embossed region to join the first and second layers to the third layer and form the manufacture.

    Abstract translation: 形成电阻点焊制造的方法包括将第三金属层夹在第一和第二金属层之间以形成工件。 第二层具有限定压花区域的表面。 第一层具有第一厚度，第三层具有第三厚度，并且第二层具有小于第一和第三厚度的第二厚度，使得第一厚度与第二厚度的比率大于约2 ：1。 该方法包括将工件定位在第一和第二电极之间，使得工件与第一和第二电极成导电关系，并且通过第一电极施加电流以同时熔化第一和第三层和 在压花区域处的表面以将第一层和第二层连接到第三层并形成制造。

    One-sided ultrasonic bonding for applications to join battery tabs to bus bars
    3.
    发明授权
    One-sided ultrasonic bonding for applications to join battery tabs to bus bars 有权

    公开(公告)号：US10158114B2

    公开(公告)日：2018-12-18

    申请号：US14932236

    申请日：2015-11-04

    Applicant: GM Global Technology Operations LLC

    Inventor： Chih-Chang Chen ,  Michael J. Bland

    IPC: B23K20/10 ,  H01M2/20 ,  H01M2/10 ,  B23K20/233 ,  B23K101/36 ,  B23K103/10 ,  B23K103/12

    Abstract: A method of ultrasonically bonding a plurality of prismatic battery cell tabs to a bus bar within a battery section. The method includes arranging numerous prismatic battery cells such that cell tabs that extend from their lateral edge are substantially aligned along a stacking dimension defined within the battery section, and positioning a free end of at least one of the plurality of cell tabs in contact with a surface of the bus bar. The method is completed by contacting a bonding tool to no more than one surface of the positioned cell tab free end and ultrasonically bonding the positioned cell tab free end to a bus bar with the bonding tool. The one-sided bonding tool has a bonding tip cooperative with an ultrasonic excitation source.

    Method and clamping fixture for laser welding battery foils to a battery tab
    5.
    发明授权
    Method and clamping fixture for laser welding battery foils to a battery tab 有权

    公开(公告)号：US11618103B2

    公开(公告)日：2023-04-04

    申请号：US17085162

    申请日：2020-10-30

    Applicant: GM Global Technology Operations LLC

    Inventor： Teresa J. Rinker ,  Hongliang Wang ,  Chih-Chang Chen ,  Erik B. Golm

    IPC: B23K26/244 ,  B23K26/70 ,  B23K101/36

    Abstract: A method and fixture for welding a battery foil-tab assembly is disclosed. The fixture includes a first clamp member having a first clamping surface defining an opening extending into the first clamp member and a second clamp member having a protrusion surrounding a weld slot. The opening of the first clamp member is configured to receive a portion of the protrusion with the battery foil-tab assembly disposed therebetween. The second clamp member is moveable toward the first clamp member to align the weld slot of the second clamp member with the opening of the first clamp member, thereby causing the protrusion to cooperate with the opening of the first clamp to deflect a portion of the battery foil-tab assembly out of a plane parallel with the battery foil-tab assembly. A laser beam is directed at the out of plane portion to laser weld the battery foil-tab assembly.

    Structure and method of bonding copper and aluminum
    6.
    发明授权
    Structure and method of bonding copper and aluminum 有权
    键合铜和铝的结构和方法

    公开(公告)号：US09289842B2

    公开(公告)日：2016-03-22

    申请号：US13741454

    申请日：2013-01-15

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Chih-Chang Chen ,  Corey Simone

    IPC: B23K9/00 ,  B23K33/00 ,  B23K35/30 ,  B32B15/01 ,  B32B15/10 ,  B23K9/23 ,  B23K9/235 ,  B23K35/28 ,  B23K35/365

    CPC classification number: B23K9/0008 ,  B23K9/232 ,  B23K9/235 ,  B23K35/286 ,  B23K35/302 ,  B23K35/365 ,  B23K2103/10 ,  B23K2103/12 ,  B32B15/01 ,  B32B15/017 ,  Y10T428/12736

    Abstract: A bonded structure of aluminum and copper is formed by bonding a copper workpiece and an aluminum workpiece together along a joint via an arc welding process. The copper workpiece has a first coating, having a lower melting point than copper, applied to at least a portion of it. The first coating allows the copper workpiece to be wetted and brazed, while the aluminum workpiece is melted and fused along the joint. The arc welding process involves the cyclic alternating of a first stage, in which an electric current is supplied to a welding wire as it is moved toward the workpieces, and a second stage, in which the electric current is reduced and the welding wire is moved away from the workpieces, to generate and detach a plurality of molten droplets along the joint. Each molten droplet is formed from the welding wire in the first stage.

    Abstract translation: 铝和铜的结合结构是通过电弧焊接方法将铜工件和铝工件沿着接头一起接合而形成的。 铜工件具有比铜更低的熔点的第一涂层，其施加到其至少一部分上。 第一个涂层允许铜工件被润湿和钎焊，而铝工件沿着接头熔化和熔合。 电弧焊接工艺涉及第一阶段的循环交替，在第一阶段中，当电线向工件移动时，电流被提供给焊丝;以及第二阶段，其中电流减小并且焊丝移动 远离工件，沿着接头产生和分离多个熔融液滴。 在第一阶段，每个熔滴由焊丝形成。

    METHOD AND CLAMPING FIXTURE FOR LASER WELDING BATTERY FOILS TO A BATTERY TAB
    8.
    发明申请
    METHOD AND CLAMPING FIXTURE FOR LASER WELDING BATTERY FOILS TO A BATTERY TAB 有权

    公开(公告)号：US20220134478A1

    公开(公告)日：2022-05-05

    申请号：US17085162

    申请日：2020-10-30

    Applicant: GM Global Technology Operations LLC

    Inventor： Teresa J. Rinker ,  Hongliang Wang ,  Chih-Chang Chen ,  Erik B. Golm

    IPC: B23K26/244 ,  B23K26/70

    Abstract: A method and fixture for welding a battery foil-tab assembly is disclosed. The fixture includes a first clamp member having a first clamping surface defining an opening extending into the first clamp member and a second clamp member having a protrusion surrounding a weld slot. The opening of the first clamp member is configured to receive a portion of the protrusion with the battery foil-tab assembly disposed therebetween. The second clamp member is moveable toward the first clamp member to align the weld slot of the second clamp member with the opening of the first clamp member, thereby causing the protrusion to cooperate with the opening of the first clamp to deflect a portion of the battery foil-tab assembly out of a plane parallel with the battery foil-tab assembly. A laser beam is directed at the out of plane portion to laser weld the battery foil-tab assembly.

    WELDING SYSTEMS AND METHODS WITH KNURLED WELD INTERFACES FOR METALLIC WORKPIECES
    9.
    发明申请
    WELDING SYSTEMS AND METHODS WITH KNURLED WELD INTERFACES FOR METALLIC WORKPIECES 有权

    公开(公告)号：US20210276134A1

    公开(公告)日：2021-09-09

    申请号：US16811627

    申请日：2020-03-06

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Chih-Chang Chen ,  Jacob W. Disbro ,  Robert H. Dietze

    IPC: B23K28/02 ,  B23K33/00 ,  B23K26/322 ,  B23K26/244 ,  H01M2/26 ,  H01M10/0525

    Abstract: Presented are metalworking systems for joining metallic workpieces, methods for forming and welding such workpieces, and lithium-ion battery pouch cells with anodized aluminum tabs joined via knurling and laser welding. A method for laser welding abutting sections of a workpiece or stackup of workpieces includes receiving, via a workpiece support frame, one or more metallic workpieces each with a surface having applied thereto a treatment layer. This treatment layer releases a gas during welding. A metalworking device forms a knurl pattern into the workpiece surface with the treatment layer. The knurl pattern includes a network of channels, such as one or more series of mutually parallel, rectilinear vent channels, designed to exhaust therethrough the gas released from a welded section of the treatment layer. A laser welding device thereafter welds a joint region of the surface(s) of the one or more metallic workpiece with the knurl pattern.

    STRUCTURE AND METHOD OF BONDING COPPER AND ALUMINUM
    10.
    发明申请
    STRUCTURE AND METHOD OF BONDING COPPER AND ALUMINUM 有权
    键合铜和铝的结构和方法

    公开(公告)号：US20140197148A1

    公开(公告)日：2014-07-17

    申请号：US13741454

    申请日：2013-01-15

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC ,  FRONIUS INTERNATIONAL GMBH

    Inventor： Chih-Chang Chen ,  Corey Simone

    IPC: B23K9/00 ,  B32B15/01

    CPC classification number: B23K9/0008 ,  B23K9/232 ,  B23K9/235 ,  B23K35/286 ,  B23K35/302 ,  B23K35/365 ,  B23K2103/10 ,  B23K2103/12 ,  B32B15/01 ,  B32B15/017 ,  Y10T428/12736

    Abstract: A bonded structure of aluminum and copper is formed by bonding a copper workpiece and an aluminum workpiece together along a joint via an arc welding process. The copper workpiece has a first coating, having a lower melting point than copper, applied to at least a portion of it. The first coating allows the copper workpiece to be wetted and brazed, while the aluminum workpiece is melted and fused along the joint. The arc welding process involves the cyclic alternating of a first stage, in which an electric current is supplied to a welding wire as it is moved toward the workpieces, and a second stage, in which the electric current is reduced and the welding wire is moved away from the workpieces, to generate and detach a plurality of molten droplets along the joint. Each molten droplet is formed from the welding wire in the first stage.

    Abstract translation: 铝和铜的结合结构是通过电弧焊接方法将铜工件和铝工件沿着接头一起接合而形成的。 铜工件具有比铜更低的熔点的第一涂层，其施加到其至少一部分上。 第一个涂层允许铜工件被润湿和钎焊，而铝工件沿着接头熔化和熔合。 电弧焊接工艺涉及第一阶段的循环交替，在第一阶段中，当电线向工件移动时，电流被提供给焊丝;以及第二阶段，其中电流减小并且焊丝移动 远离工件，沿着接头产生和分离多个熔融液滴。 在第一阶段，每个熔滴由焊丝形成。

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