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公开(公告)号：US10903497B2
公开(公告)日：2021-01-26
申请号：US16086339
申请日：2017-03-31
申请人： LG Chem, Ltd.
发明人： Su-Rim Lee , Su-Hyun Kim , Hye-Won Jeong , Jae-Hyun Lee
摘要： The present disclosure relates to a cathode including a cathode active material and poly(amic acid). When the lithium secondary battery including the cathode is in an abnormal operation range of 160° C. or higher, condensation reaction of poly(amic acid) occurs to form polyimide. The polyimide surrounds cathode active material particles in the form of a coating film and prevents transport of lithium ions and electrons to interrupt current flow, and inhibits abnormal heat emission and thermal runaway or combustion caused by additional reactions.
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公开(公告)号：US10897066B2
公开(公告)日：2021-01-19
申请号：US16093391
申请日：2017-12-07
申请人： LG Chem, Ltd.
发明人： Su-Hyun Kim , Su-Rim Lee , Song-Taek Oh
IPC分类号： H01M10/48 , H01M2/26 , H01M2/30 , H01M4/66 , H01M10/0583 , H01M10/42 , H01M10/0585 , H01M10/04 , H01M10/0587 , G01R31/374 , G01R31/389
摘要： Disclosed is a battery cell having an electrode assembly configured as a structure in which a cathode, an anode, and a separator interposed between the cathode and the anode, wherein a surface or both surfaces of respective electrode current collectors of the cathode and the anode are coated with an electrode mixture including an electrode active material, the cathode and the anode are provided with a first cathode terminal and a first anode terminal respectively serving as external input/output terminals of the battery cell, and at least one of the cathode and the anode is provided with a resistance measurement terminal at a position opposite to the external input/output terminal, for measuring a resistance of an electrode current collector.
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公开(公告)号：US10184778B2
公开(公告)日：2019-01-22
申请号：US15308893
申请日：2015-11-26
申请人： LG Chem, Ltd.
发明人： Du-Seong Yoon , Su-Hyun Kim , Ji-Hyun Kim , Jae-Hyun Lee
摘要： Provided are a device and method for measuring the thickness of a secondary battery cell. The device comprises: a mounting stand on which a secondary battery cell is positioned; a pressurizing plate which is installed so as to be variable in distance from the mounting stand; a pressurizing device which pushes or pulls the pressurizing plate; a measurement device for measuring the pressurization force applied to the pressurizing plate; and a controller which is configured to control charging, discharging or temperature of the secondary battery cell according to measurement conditions, receive a pressurization force measurement value and a thickness measurement value from the measurement device to thereby determine the magnitude of the pressurization force applied to the pressurizing plate and the thickness of the secondary battery cell, and vary, or maintain the pressurization force applied to the pressurizing plate to be constant.
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公开(公告)号：US20190190092A1
公开(公告)日：2019-06-20
申请号：US16093391
申请日：2017-12-07
申请人： LG Chem, Ltd.
发明人： Su-Hyun Kim , Su-Rim Lee , Song-Taek Oh
CPC分类号： H01M10/486 , G01R27/00 , G01R31/36 , H01M2/26 , H01M2/263 , H01M2/30 , H01M4/661 , H01M10/0431 , H01M10/045 , H01M10/0583 , H01M10/0585 , H01M10/0587 , H01M10/4285 , H01M10/48 , H01M2200/00
摘要： Disclosed is a battery cell having an electrode assembly configured as a structure in which a cathode, an anode, and a separator interposed between the cathode and the anode, wherein a surface or both surfaces of respective electrode current collectors of the cathode and the anode are coated with an electrode mixture including an electrode active material, the cathode and the anode are provided with a first cathode terminal and a first anode terminal respectively serving as external input/output terminals of the battery cell, and at least one of the cathode and the anode is provided with a resistance measurement terminal at a position opposite to the external input/output terminal, for measuring a resistance of an electrode current collector.
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公开(公告)号：US20190088950A1
公开(公告)日：2019-03-21
申请号：US16086339
申请日：2017-03-31
申请人： LG Chem, Ltd.
发明人： Su-Rim Lee , Su-Hyun Kim , Hye-Won Jeong , Jae-Hyun Lee
IPC分类号： H01M4/62 , H01M4/36 , H01M10/42 , H01M10/0525
摘要： The present disclosure relates to a cathode including a cathode active material and poly(amic acid). When the lithium secondary battery including the cathode is in an abnormal operation range of 160° C. or higher, condensation reaction of poly(amic acid) occurs to form polyimide. The polyimide surrounds cathode active material particles in the form of a coating film and prevents transport of lithium ions and electrons to interrupt current flow, and inhibits abnormal heat emission and thermal runaway or combustion caused by additional reactions.
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公开(公告)号：US20170074634A1
公开(公告)日：2017-03-16
申请号：US15308893
申请日：2015-11-26
申请人： LG Chem, Ltd.
发明人： Du-Seong Yoon , Su-Hyun Kim , Ji-Hyun Kim , Jae-Hyun Lee
CPC分类号： G01B7/06 , G01B7/063 , G01B11/026 , G01B11/06 , G01B21/08 , G01B2210/44 , G01L1/16 , G01L5/0028 , G01L5/0038 , H01M10/48 , H02J7/0029 , H02J7/0047
摘要： Provided are a device and method for measuring the thickness of a secondary battery cell. The device according to the present invention comprises: a mounting stand on which a secondary battery cell is positioned; a pressurizing plate which is installed so as to be variable in distance from the mounting stand; a pressurizing means which pushes or pulls the pressurizing plate toward or from the pressurizing plate; a measurement means for measuring the pressurization force applied to the pressurizing plate by the pressurizing means and the thickness of the secondary battery cell; and a controller which is configured to control charging, discharging or temperature of the secondary battery cell according to measurement conditions, receive a pressurization force measurement value and a thickness measurement value from the measurement means to thereby determine the magnitude of the pressurization force applied to the pressurizing plate and the thickness of the secondary battery cell, and vary, or maintain the pressurization force applied to the pressurizing plate to be constant.
摘要翻译： 提供了用于测量二次电池单元的厚度的装置和方法。 根据本发明的装置包括：安装在二次电池单元上的安装台; 加压板，其安装成距离安装台的距离可变; 加压装置，其朝向或从加压板推压或拉动加压板; 用于测量通过加压装置施加到加压板的加压力和二次电池单元的厚度的测量装置; 以及控制器，被配置为根据测量条件控制二次电池的充电，放电或温度，从测量装置接收加压力测量值和厚度测量值，从而确定施加到二次电池的加压力的大小 加压板和二次电池单元的厚度，并且改变或保持施加到加压板的加压力恒定。
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