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1.发明授权公开(公告)号：US11701738B2
公开(公告)日：2023-07-18
申请号：US17036786
申请日：2020-09-29
Inventor： Nannan Chen , Joshua L. Solomon , Hui-Ping Wang , Zixuan Wan , Blair E. Carlson , Paulina G. Torres Guzman
IPC: B23K26/24 , B23K26/70 , B23K101/00
CPC classification number: B23K26/24 , B23K26/70 , B23K2101/006
Abstract: A laser welded assembly and method of making. The laser welded assembly includes a first work piece having a thickness (T1) defined between an external surface and a faying surface; a second work piece having a thickness (T2) defined between an external surface and a faying surface of the second work piece; a weld seam having a core fusion zone extending from the external surface of the first work piece through the faying interface and at least partially into the thickness (T2) of the second work piece; and a protruding fusion zone extending laterally from the core fusion zone adjacent to the external surface of the first work piece. The protruding fusion zone may be formed by post-heating or concurrently with the core fusion zone.
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公开(公告)号：US20220388096A1
公开(公告)日：2022-12-08
申请号：US17338001
申请日：2021-06-03
Inventor： Hui-ping Wang , Joshua Lee Solomon , Zixuan Wan , Nannan Chen , Scott A. Hooker
IPC: B23K26/354 , B23K26/082 , B23K26/06 , B23K9/013 , B23K15/08
Abstract: A method for healing surface irregularities in a weld joint includes generating a healing energy beam by a focused energy device, where the healing energy beam includes a predefined energy density. The method also includes scanning the healing energy beam along at least a portion of a periphery of the weld joint, where the weld joint includes at least an upper layer and a lower layer. The method also includes melting less than half a thickness of the upper layer of the weld joint. The predefined energy density of the healing energy beam is based on the thickness of the upper layer of the weld joint.
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Patent Agency Ranking
公开(公告)号：US20220134466A1
公开(公告)日：2022-05-05
申请号：US17084076
申请日：2020-10-29
Inventor： Nannan Chen , Hongliang Wang , James G. Schroth
IPC: B23K11/20
Abstract: A method of resistive joining of metal sheets for a battery cell is provided. The method comprises providing an asymmetrical stackup comprising a first set of first metal sheets and a second set of second metal sheets. The first metal sheets arranged in sequence relative the second metal sheets defining the asymmetrical stackup. Each of the first and second metal sheets separated by a coating layer. The first metal sheets include a first material of a first melting point and the second metal sheets include a second material of a second melting point. The coating layer includes a third material of a third melting point. The first melting point is greater than the second melting point. The third melting point is greater than the second melting point and less than the first melting point. The method further comprises heating the first metal sheets to a first temperature to allow solid state bonding of the first metal sheets and to allow solid state bonding of the first set to the second set. The method further comprises heating the second metal sheets to a second temperature to allow fusion bonding of the second metal sheets.
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4.发明申请公开(公告)号：US20220097172A1
公开(公告)日：2022-03-31
申请号：US17036786
申请日：2020-09-29
Inventor： Nannan Chen , Joshua L. Solomon , Hui-Ping Wang , Zixuan Wan , Blair E. Carlson , Paulina G. Torres Guzman
Abstract: A laser welded assembly and method of making. The laser welded assembly includes a first work piece having a thickness (T1) defined between an external surface and a faying surface; a second work piece having a thickness (T2) defined between an external surface and a faying surface of the second work piece; a weld seam having a core fusion zone extending from the external surface of the first work piece through the faying interface and at least partially into the thickness (T2) of the second work piece; and a protruding fusion zone extending laterally from the core fusion zone adjacent to the external surface of the first work piece. The protruding fusion zone may be formed by post-heating or concurrently with the core fusion zone.
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公开(公告)号：US11465227B2
公开(公告)日：2022-10-11
申请号：US17174971
申请日：2021-02-12
Inventor： Nannan Chen , Hongliang Wang , Zhongyi Liu
IPC: B23K11/16 , B32B15/01 , B23K11/24 , H01M50/119 , H01M50/124 , B32B15/20 , B23K11/20 , B23K103/18 , B23K101/18
Abstract: System and method of manufacturing high-strength bonded metal sheets for a battery cell are provided. The method comprises providing a stackup comprising a first metal sheet and a second metal sheet. The first and second metal sheets are separated by a first coating layer. The first coating layer comprises nickel-phosphide. The first metal sheet includes a first material of a first melting point and the second metal sheet includes a second material of a second melting point. The first coating layer including a third material of a third melting point. The method further comprises heating the stackup to allow crystallization of nickel in the first coating layer and remove the residual nickel-phosphide defining an enhanced coating layer. The enhanced coating layer comprises crystallized nickel for high-strength solid state bonding of the first and second metal sheets to the enhanced coating layer.
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公开(公告)号：US20220258274A1
公开(公告)日：2022-08-18
申请号：US17174971
申请日：2021-02-12
Inventor： Nannan Chen , Hongliang Wang , Zhongyi Liu
IPC: B23K11/16 , B32B15/01 , B32B15/20 , H01M50/119 , H01M50/124 , B23K11/24
Abstract: System and method of manufacturing high-strength bonded metal sheets for a battery cell are provided. The method comprises providing a stackup comprising a first metal sheet and a second metal sheet. The first and second metal sheets are separated by a first coating layer. The first coating layer comprises nickel-phosphide. The first metal sheet includes a first material of a first melting point and the second metal sheet includes a second material of a second melting point. The first coating layer including a third material of a third melting point. The method further comprises heating the stackup to allow crystallization of nickel in the first coating layer and remove the residual nickel-phosphide defining an enhanced coating layer. The enhanced coating layer comprises crystallized nickel for high-strength solid state bonding of the first and second metal sheets to the enhanced coating layer.
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公开(公告)号：US20170361392A1
公开(公告)日：2017-12-21
申请号：US15616252
申请日：2017-06-07
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： David R. Sigler , Blair E. Carlson , Hui-Ping Wang , Nannan Chen
CPC classification number: B23K11/115 , B23K11/20 , B23K11/3009 , B23K35/0205 , B23K2103/20
Abstract: A spot welding electrode and a method of using the electrode to resistance spot weld a workpiece stack-up that includes an aluminum workpiece and an adjacent overlapping steel workpiece are disclosed. The spot welding electrode includes a weld face having a multistep conical geometry that includes a series of steps centered on a weld face axis. The series of steps comprises an innermost first step in the form of a central plateau and, additionally, one or more annular steps that surround the central plateau and cascade radially outwardly from the central plateau towards an outer perimeter of the weld face. The weld face has a conical cross-sectional profile in which a periphery of a top plateau surface of the central plateau and a periphery of a top annular step surface of each of the one or more annular steps are contained within a conical sectional area.
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