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1. 发明申请

US20210203044A1 ELECTRODE ASSEMBLY AND SECONDARY BATTERY COMPRISING SAME 有权
公开(公告)号：US20210203044A1
公开(公告)日：2021-07-01
申请号：US16754190
申请日：2018-07-31
申请人： Samsung SDI Co., Ltd.
发明人： Hyun Ki JEONG , Jung Hyun PARK , Nobuyuki OYAGI
IPC分类号： H01M50/538 , H01M10/04
摘要： An electrode assembly of a secondary battery has positive and negative electrode tabs aligned on a same line approximately at the center of the radius of the cross section of the electrode assembly, and are attached so as not to overlap each other in the longitudinal direction, thereby making it possible to improve winding roundness, and a positive electrode plate coating portion on a positive electrode plate, which is adjacent to the negative electrode tab, and which has no positive electrode tab formed thereon, thereby preventing precipitation of lithium during overcharging. The electrode assembly includes positive and negative electrode plates attached to the positive and negative electrodes tabs, respectively, and a separator interposed between the electrode plates, wherein the electrode plates and the separator are laminated and wound such that the positive and negative electrode tabs respectively protrude from the longitudinal upper and lower portions of the electrode assembly, respectively.

2. 发明申请

US20230059201A1 ELECTRODE ASSEMBLY AND SECONDARY BATTERY COMPRISING THE SAME 有权
公开(公告)号：US20230059201A1
公开(公告)日：2023-02-23
申请号：US17792486
申请日：2021-02-03
申请人： SAMSUNG SDI CO., LTD.
发明人： Hyun Ki JUNG , In Young JANG , Nobuyuki OYAGI , Sung Soo PARK
IPC分类号： H01M10/04 , H01M4/04 , H01M50/46 , H01M50/186
摘要： The present invention relates to an electrode assembly and a secondary battery comprising same, the electrode assembly comprising a cathode plate having a leading side formed to be slanted, so that stress exerted by distortion occurring at a center winding portion during charging and discharging of a secondary battery can be distributed, thus preventing the cathode plate from penetrating a separator at the distorted site causing a short with an anode plate. According to an embodiment, the present invention relates to an electrode assembly comprising: an anode plate having an anode coating layer formed on an anode current collector plate; a cathode plate having a cathode coating layer formed on a cathode current collector plate; and a separator interposed between the cathode plate and the anode plate, the electrode assembly being formed by winding a stack of the anode plate, the separator, and the cathode plate, and disclosed are an electrode assembly and a secondary battery comprising same, the electrode assembly comprising a cathode plate having: a side extending along the lengthwise direction; a side opposite to the side, extending along the lengthwise direction; and a leading side connecting the side and the opposite side and located at a center winding portion of the wound electrode assembly, the leading side being slanted to have an acute angle or obtuse angle with respect to the side; and a terminating side connecting the side and the opposite side and located, as a side opposite to the leading side, on the outermost side of the electrode assembly.

3. 发明申请

US20220278376A1 ELECTRODE ASSEMBLY AND SECONDARY BATTERY COMPRISING THE SAME 有权
公开(公告)号：US20220278376A1
公开(公告)日：2022-09-01
申请号：US17747369
申请日：2022-05-18
申请人： SAMSUNG SDI CO., LTD.
发明人： Jung Hyun PARK , June Hyoung PARK , Hyun Ki JEONG , Nobuyuki OYAGI
IPC分类号： H01M10/0587 , H01M10/04 , H01M10/28 , H01M50/107 , H01M50/116 , H01M50/463
摘要： An electrode assembly and a secondary battery are provided. In an exemplary embodiment, an electrode assembly includes: a first electrode plate having a first electrode tab attached thereto; a second electrode plate having at least one second electrode tab attached thereto; and a separator between the first electrode plate and the second electrode plate, the electrode assembly wound in a state in which the first electrode plate, the separator, and the second electrode plate are stacked, and the first electrode plate includes coating portions formed by coating an active material on first and second surfaces thereof, and a half-coating portion formed by coating the active material on only one of the first and second surfaces at a region corresponding to a leading edge, on the basis of a winding direction, where an active material of the second electrode plate begins.

4. 发明申请

US20210344033A1 SECONDARY BATTERY 有权
公开(公告)号：US20210344033A1
公开(公告)日：2021-11-04
申请号：US17283240
申请日：2019-09-24
申请人： Samsung SDI Co., Ltd.
发明人： Jung Hyun PARK , Hyun Ki JEONG , Nobuyuki OYAGI , Won Ik LEE , Young Chang KIM
IPC分类号： H01M10/04 , H01M50/538 , H01M50/533 , H01M4/134
摘要： An embodiment of the present invention relates to a secondary battery, and with respect to a technical problem to be resolved, provided is a secondary battery which has an electrode tab provided by forming a notch on a non-coated part of an electrode plate of an electrode assembly, and which can enable a current collecting plate to come into surface contact with the electrode tab. To this end, disclosed is a secondary battery comprising: an electrode assembly which comprises a first electrode plate coated with a first electrode active material and having a first non-coated part formed along an upper end thereof, a second electrode plate coated with a second electrode active material and having a second non-coated part formed along a lower end thereof, and a separator interposed between the first electrode plate and the second electrode plate, and which is wound in a jelly roll shape; a can for accommodating the electrode assembly; a cap assembly for sealing the can; a first current collecting plate electrically connected to the cap assembly by coming into contact with the first non-coated part; and a second current collecting plate electrically connected to the can by coming into contact with the second non-coated part, wherein the first non-coated part and/or the second non-coated part has a structure in which a plurality of isosceles trapezoidal electrode tabs are arranged to be adjacent to one another with notches formed at a specific angle (α) and at predetermined intervals from a start point thereof that is closest to a winding axis, and thus the first non-coated part and/or the second non-coated part are bent toward the winding axis.

5. 发明申请

US20200343520A1 SECONDARY BATTERY AND MANUFACTURING METHOD THEREFOR 审中-公开
公开(公告)号：US20200343520A1
公开(公告)日：2020-10-29
申请号：US16960293
申请日：2018-10-08
申请人： Samsung SDI Co., Ltd.
发明人： Hyun Ki JEONG , Ho Jae LEE , Jung Hyun PARK , June Hyoung PARK , Sang Mi LEE , Won Ik LEE , Ye Ji CHA , Nobuyuki OYAGI
IPC分类号： H01M2/26 , H01M2/34 , H01M2/12
摘要： Disclosed is a secondary battery, which has a reinforced strength and can simplify the manufacturing process thereof. For example, one embodiment provides a secondary battery which comprises: an electrode assembly including a first electrode plate and a second electrode plate, wherein one of the first electrode plate and the second electrode plate includes a plurality of first tabs formed to protrude in one direction; a first current collection tab coupled to the first tabs; a case housing the electrode assembly; and a cap assembly coupled to the upper part of the case, wherein the first current collection tab is coupled to one of the cap assembly and the bottom surface of the case.

6. 发明申请

US20200235369A1 SECONDARY BATTERY 审中-公开
公开(公告)号：US20200235369A1
公开(公告)日：2020-07-23
申请号：US16754690
申请日：2018-07-31
申请人： SAMSUNG SDI CO., LTD.
发明人： Hyun Ki JEONG , Ho Jae LEE , Jung Hyun PARK , June Hyoung PARK , Nobuyuki OYAGI , Sang Mi LEE , Won Ik LEE , Ye Ji CHA
IPC分类号： H01M2/26 , H01M2/02 , H01M2/24 , H01M2/06
摘要： An embodiment of the present invention relates to a secondary battery, wherein a technical problem to be solved is to provide a secondary battery which has low resistance and can output high power without loss of capacity, and can prevent deformation or cracking of an electrode assembly. To this end, the present invention provides a secondary battery comprising: a cylindrical can; an electrode assembly which is received in the cylindrical can and includes multiple first tabs extending in a first direction which is a longitudinal direction of the cylindrical can, and multiple second tabs extending in a second direction opposite to the first direction; a cap assembly for sealing the cylindrical can; a first current collecting structure which electrically connects the multiple first tabs to the cap assembly while being insulated from the cylindrical can; and a second current collecting structure for electrically connecting the multiple second tabs to the cylindrical can.

7. 发明申请

US20190252732A1 ELECTRODE ASSEMBLY AND SECONDARY BATTERY COMPRISING THE SAME 审中-公开
公开(公告)号：US20190252732A1
公开(公告)日：2019-08-15
申请号：US16275146
申请日：2019-02-13
申请人： SAMSUNG SDI CO., LTD.
发明人： Jung Hyun PARK , June Hyoung PARK , Hyun Ki JEONG , Nobuyuki OYAGI
IPC分类号： H01M10/0587 , H01M10/04 , H01M2/02
CPC分类号： H01M10/0587 , H01M2/022 , H01M2/026 , H01M2/18 , H01M10/0409 , H01M10/0422 , H01M10/0431 , H01M10/286
摘要： An electrode assembly and a secondary battery are provided. In an exemplary embodiment, an electrode assembly includes: a first electrode plate having a first electrode tab attached thereto; a second electrode plate having at least one second electrode tab attached thereto; and a separator between the first electrode plate and the second electrode plate, the electrode assembly wound in a state in which the first electrode plate, the separator, and the second electrode plate are stacked, and the first electrode plate includes coating portions formed by coating an active material on first and second surfaces thereof, and a half-coating portion formed by coating the active material on only one of the first and second surfaces at a region corresponding to a leading edge, on the basis of a winding direction, where an active material of the second electrode plate begins.

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