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1.发明授权公开(公告)号：US12074293B2
公开(公告)日：2024-08-27
申请号：US17470215
申请日：2021-09-09
发明人： Masafumi Kadoi , Takahiro Sakurai , Kosuke Suzuki
IPC分类号： H01M10/0585 , H01M4/13 , H01M4/36 , H01M10/0525 , H01M10/0587 , H01M50/103
CPC分类号： H01M10/0585 , H01M4/13 , H01M4/36 , H01M10/0587 , H01M50/103 , H01M10/0525
摘要： A secondary battery includes a flat wound electrode body in which an electrode sheet is wound, and an electrode terminal. The electrode sheet has a current collector, an electrode active material layer which is formed on a surface of the current collector, and a non-formation portion in which the electrode active material layer is not formed on the surface of the current collector. The wound electrode body has a first end portion in which a rounded portion is formed. A first slit is formed along a winding direction in the non-formation portion at the first end portion. A flat surface portion to which the electrode terminal is joined is provided in a portion positioned further toward opposite than the first slit from the electrode active material layer in a portion of the non-formation portion at the first end portion.
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公开(公告)号：US11878361B2
公开(公告)日：2024-01-23
申请号：US17876020
申请日：2022-07-28
发明人： Takahiro Sakurai , Kosuke Suzuki , Kota Ohata
IPC分类号： B23K20/10
CPC分类号： B23K20/106
摘要： An ultrasonic joining horn disclosed herein can generate ultrasonic vibration in a predetermined vibration direction and includes a base portion, a stand portion that rises from an upper surface of the base portion, and a pressure contact portion formed of a plurality of protrusions that protrude from an upper surface of the stand portion. Each of the protrusions is formed into a pyramid shape or a truncated pyramid shape, the protrusions are arrayed, and when viewed from top, at least a portion of a peripheral edge of a portion in which the protrusions are arrayed has a zigzag shape. The zigzag portion is formed along at least one of the vibration direction and a perpendicular direction to the vibration direction. The upper surface of the base portion has an exposed surface on which the stand portion is not formed.
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3.发明授权公开(公告)号：US12068507B2
公开(公告)日：2024-08-20
申请号：US17876054
申请日：2022-07-28
发明人： Takahiro Sakurai , Kosuke Suzuki , Kota Ohata
IPC分类号： H01M50/557 , H01M50/209 , H01M50/516 , H01M50/562
CPC分类号： H01M50/557 , H01M50/209 , H01M50/516 , H01M50/562
摘要： This disclosure provides a terminal component that can reduce thermal deterioration due to beam irradiation to a metal joining portion. A terminal component disclosed herein includes a first member formed of a metal and a plate-like second member formed of a metal, and a metal joining portion joined by metal joining is formed in a boundary surface where the first member and the second member are stacked. On a surface of the second member in an opposite side to the boundary surface, a raised portion raised from the surface is formed in a peripheral portion close to the metal joining portion.
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公开(公告)号：US11710880B2
公开(公告)日：2023-07-25
申请号：US17409990
申请日：2021-08-24
发明人： Kosuke Suzuki , Takahiro Sakurai
IPC分类号： H01M50/562
CPC分类号： H01M50/562
摘要： A secondary battery terminal is provided which is constituted by dissimilar metals and which has a structure capable of preventing liquid from penetrating into a boundary between the dissimilar metals of the terminal. The terminal disclosed herein includes a plate-like metallic first member and a second member which is metallically joined to one plate surface of the first member and which is constituted by a metal that differs from a metal constituting the first member. A first stepped portion constituted by an end of the second member, which is more protruded than the one plate surface of the first member, is formed at a boundary between the plate surface and the metallically-joined second member and, further, a second stepped portion which protrudes from the one plate surface of the first member is formed on the plate surface.
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公开(公告)号：US12100865B2
公开(公告)日：2024-09-24
申请号：US17404616
申请日：2021-08-17
发明人： Kosuke Suzuki , Takahiro Sakurai
IPC分类号： H01M10/00 , B23K20/10 , H01M50/103 , H01M50/209 , H01M50/502 , H01M50/564 , H01M50/566 , H01M10/0525
CPC分类号： H01M50/566 , B23K20/10 , H01M50/103 , H01M50/209 , H01M50/502 , H01M50/564 , H01M10/0525
摘要： The technique disclosed herein provides a terminal that enables welding with an external member to be realized without requiring surface treatment of a metallic portion having been pressure-welded during ultrasonic welding. The terminal disclosed herein is a terminal constituting any of positive and negative electrodes of a secondary battery and includes a plate-like metallic first member and a metallic second member which is ultrasonically welded to one plate surface of the first member. A recessed portion is formed on a surface on an opposite side to the surface, to which the second member is welded, of the first member, and ultrasonic welding between the first member and the second member is realized in the recessed portion.
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公开(公告)号：US11942663B2
公开(公告)日：2024-03-26
申请号：US17561176
申请日：2021-12-23
发明人： Kosuke Suzuki , Takahiro Sakurai
IPC分类号： H01M50/557 , H01M50/103 , H01M50/147 , H01M50/562 , H01M10/0525
CPC分类号： H01M50/557 , H01M50/103 , H01M50/147 , H01M50/562 , H01M10/0525 , H01M2200/103
摘要： A terminal component includes a first metal and a second metal overlapped on the first metal, the first metal having a part to be connected to an internal terminal, and the second metal having a part to be exposed to the outside of a battery case. At an interface where the first metal and the second metal are overlapped, one of the first metal and the second metal has a protrusion having a flat top portion. The other metal is joined to the top portion. A cross section of the protrusion orthogonal to a projection direction of the protrusion is set such that fusing occurs when a current equal to or higher than a predetermined current value flows between the first metal and the second metal.
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