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公开(公告)号：US20230253667A1
公开(公告)日：2023-08-10
申请号：US18008025
申请日：2021-09-29
发明人： Soodong Noh , Kwan Soo Lee , Jeahyeok Ryu
IPC分类号： H01M50/333 , H01M50/578 , H01M50/102 , H01M50/533 , H01M50/152
CPC分类号： H01M50/333 , H01M50/578 , H01M50/102 , H01M50/533 , H01M50/152 , H01M2200/20
摘要： A secondary battery according to an embodiment of the present disclosure includes an electrode assembly; a battery case that houses the electrode assembly; and a cap assembly that is coupled to an open upper part of the battery case. The cap assembly comprises a current interrupt device (CID); a safety vent located on the current interrupt device and electrically connected to the current interrupt device; and an insulating disk located between the current interrupt device and the safety vent.
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公开(公告)号：US20240204357A1
公开(公告)日：2024-06-20
申请号：US18526218
申请日：2023-12-01
发明人： Seongmo Koo , Young Soo Kim , Jaehee Kim , Taehyun Kim , Kwan Soo Lee , Byeongjoon Lee
IPC分类号： H01M50/46 , H01M50/431 , H01M50/457 , H01M50/466 , H01M50/489
CPC分类号： H01M50/461 , H01M50/431 , H01M50/457 , H01M50/466 , H01M50/489
摘要： A jelly-roll type electrode assembly includes a first separator, a second separator, a negative electrode, and a positive electrode. The first separator and second separator are positioned adjacent each other in a separator overlapping portion and extend with at least three layers in a first direction toward a core of the electrode assembly between an inner surface of the positive electrode and an outer surface of the negative electrode. An adhesive tape is located in at least one of a location between the outer surface of the positive electrode and an inner surface of the first separator, and a location between an outer surface of the negative electrode and the inner surface of the first separator.
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公开(公告)号：US20230231262A1
公开(公告)日：2023-07-20
申请号：US18007817
申请日：2021-08-05
发明人： Eun Sun Choi , Kwan Soo Lee , Wook Hee Jang , Jong Pil Jegal
IPC分类号： H01M50/342 , H01M50/538 , H01M50/107 , H01M50/152 , H01M50/566 , H01M50/167
CPC分类号： H01M50/3425 , H01M50/538 , H01M50/107 , H01M50/152 , H01M50/566 , H01M50/167
摘要： The present invention relates to a secondary battery. The secondary battery includes an electrode assembly in which electrodes and separators are alternately stacked to be wound, a cylindrical can comprising an accommodation part, in which the electrode assembly is accommodated, the can having an opening, and a cap assembly configured to cover the opening. The cap assembly includes a safety vent comprising a notching part that is ruptured when an internal pressure of the battery increases, the notching part has a circular shape in a plan view, the electrode assembly comprises an electrode tab connected to each of the electrodes, the safety vent is connected to the electrode tab and an external terminal, wherein the electrode tab and the external terminal are connected to different sides of an inner side and an outer side with respect to the notching part in the safety vent in the plane view.
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公开(公告)号：US20240339736A1
公开(公告)日：2024-10-10
申请号：US18290627
申请日：2022-12-15
发明人： Young Soo Kim , Kwan Soo Lee
IPC分类号： H01M50/578 , H01M50/107 , H01M50/152 , H01M50/186 , H01M50/342
CPC分类号： H01M50/578 , H01M50/152 , H01M50/186 , H01M50/3425 , H01M50/107 , H01M2200/20
摘要： A secondary battery according to one embodiment of the present disclosure includes an electrode assembly including electrodes and a separator; a battery can housing the electrode assembly and having an upper end; and a safety vent coupled to the open upper end of the battery can. The electrode assembly includes an electrode tab protruding from one of the electrodes in a direction towards the safety vent. The safety vent is formed with a notch part extending along a circumferential direction. The safety vent includes a central portion positioned radially inside the notch part and an outer peripheral portion positioned radially outside the notch part, where the electrode tab is attached to a lower surface of the outer peripheral portion.
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5.发明公开公开(公告)号：US20240322182A1
公开(公告)日：2024-09-26
申请号：US18579023
申请日：2022-11-01
CPC分类号： H01M4/625 , H01M4/0404 , H01M4/0435 , H01M4/13 , H01M4/139 , H01M4/48 , H01M2004/021 , H01M2004/027
摘要： A negative electrode for a secondary battery comprises a negative electrode mixture disposed on at least one surface of a negative electrode current collector, wherein the negative electrode mixture comprises a negative electrode active material and a conductive material, wherein the negative electrode active material comprises a silicon-based active material, and wherein the conductive material is composed of a single-walled carbon nanotube (SWCNT).
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公开(公告)号：US20240186588A1
公开(公告)日：2024-06-06
申请号：US18526439
申请日：2023-12-01
发明人： Seongmo Koo , Young Soo Kim , Eun Ji Park , Kwan Soo Lee , Byeongjoon Lee
IPC分类号： H01M10/0587 , H01M50/451 , H01M50/46
CPC分类号： H01M10/0587 , H01M50/451 , H01M50/46
摘要： A jelly-roll electrode assembly includes first and second electrodes spaced apart from each other and helically arranged in a first direction around a winding axis of a central core of the assembly. A separator overlapping portion includes a first separator positioned adjacent an inner surface of a terminal end of the second electrode and extending in a second direction opposite the first direction toward the central core, and a second separator positioned adjacent a terminal end of the first separator and extending in the second direction opposite the first direction toward the central core. A loop portion in which the first and second separators are looped about each other in the central core to extend in the first direction around the first and second electrodes such that the second separator extends in both the first and second directions within the separator overlapping portion.
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