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公开(公告)号：US11196112B2
公开(公告)日：2021-12-07
申请号：US16322017
申请日：2018-01-25
申请人： LG Chem, Ltd.
发明人： Han Gab Song , Kyung Min Kim , Min Gyu Kim , Pil Kyu Park
IPC分类号： H01M50/116 , H01M10/04 , H01M10/0587 , H01M50/107 , H01M50/411 , H01M50/184 , H01M10/052
摘要： The present disclosure provides an insulation member having excellent mechanical properties having enough shock-absorbing effect in external shock and volume change in a battery and provides a cylindrical secondary battery including the insulation member. The insulation member according to the present disclosure has excellent mechanical properties in high temperature, is composed of polypropylene having narrow molecular weight, and has a fine pattern on the surface.
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公开(公告)号：US20200168875A1
公开(公告)日：2020-05-28
申请号：US16637127
申请日：2018-08-30
申请人： LG Chem, Ltd.
发明人： Kyung Min Kim , Song Taek Oh , Jung Seok Choi
摘要： The present invention relates to a secondary battery. The secondary battery according to the present invention comprises an electrode assembly in which a positive electrode, a separator, and a negative electrode are alternately combined to be stacked; and a pouch that accommodates the electrode assembly therein. The separator comprises a first separator disposed between the positive electrode and the negative electrode and having a through-hole penetrated in a direction that faces the positive electrode and the negative electrode, and a second separator covering the through-hole of the first separator and having an end connected to the pouch. When an internal gas is generated due to overcharging, the pouch is expanded to allow the second separator to move to open the through-hole of the first separator to cause the positive electrode and the negative electrode to contact each other via the through-hole.
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公开(公告)号：US20190173060A1
公开(公告)日：2019-06-06
申请号：US16322017
申请日：2018-01-25
申请人： LG Chem, Ltd.
发明人： Han Gab Song , Kyung Min Kim , Min Gyu Kim , Pil Kyu Park
IPC分类号： H01M2/02 , H01M10/0587 , H01M10/04
摘要： The present disclosure provides an insulation member having excellent mechanical properties having enough shock-absorbing effect in external shock and volume change in a battery and provides a cylindrical secondary battery including the insulation member. The insulation member according to the present disclosure has excellent mechanical properties in high temperature, is composed of polypropylene having narrow molecular weight, and has a fine pattern on the surface.
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公开(公告)号：US20180047969A1
公开(公告)日：2018-02-15
申请号：US15668795
申请日：2017-08-04
申请人： LG Chem, Ltd.
发明人： Kyung Min Kim , Joo Hwan Sung
IPC分类号： H01M2/22 , H01M10/0585
摘要： Provided is an electrode assembly. According to the present invention, a separator or an electrode may be prevented from being damaged by an electrode tab when an external impact is applied to a secondary battery or the electrode assembly to prevent short circuit from occurring in the secondary battery. To achieve the above object, the electrode assembly according to the present invention may include at least one electrode tab, and the electrode tab may include a conductive part and a non-conductive part (or a ductile part).
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公开(公告)号：US20200343519A1
公开(公告)日：2020-10-29
申请号：US16765374
申请日：2019-03-22
申请人： LG Chem, Ltd.
发明人： Kyung Min Kim
IPC分类号： H01M2/26 , H01M10/0585 , H01M2/34
摘要： An electrode assembly having an improved connection structure between electrode tabs includes: an electrode laminate including a plurality of unit cells, each unit cell of the plurality of unit cells formed of a positive electrode having an electrode tab extending from an end thereof, a negative electrode having an electrode tab extending from an end thereof, and a separator disposed between the positive electrode and the negative electrode; and a conductive adhesion portion connecting the electrode tabs of the positive electrode to each other or connecting the electrode tabs of the negative electrode to each other, wherein the conductive adhesion portion includes a safety element material, and wherein the safety element material is applied in the form of a slurry.
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公开(公告)号：US12015177B2
公开(公告)日：2024-06-18
申请号：US16969386
申请日：2019-04-15
申请人： LG CHEM, LTD.
发明人： Kyung Min Kim
IPC分类号： H01M50/581 , H01M10/0587 , H01M50/531 , H01M50/534 , H01M50/574
CPC分类号： H01M50/581 , H01M10/0587 , H01M50/531 , H01M50/534 , H01M50/574 , H01M2200/106
摘要： An electrode assembly with improved connection between current collectors and electrode tabs, and a method for manufacturing the same, for assuring safety with respect to overcharge, and battery capacity by improving a connection structure between the electrode tab and the current collector are provided. The electrode assembly for a rechargeable battery includes: an electrode current collector; an uncoated region in which an electrode active material layer is not formed, and provided on one side of the electrode current collector; an electrode tab disposed in the uncoated region; and a conductive adhesion portion that is disposed between the uncoated region and the electrode tab. The conductive adhesion portion comprises a positive temperature coefficient (PTC) material.
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公开(公告)号：US11581616B2
公开(公告)日：2023-02-14
申请号：US16770867
申请日：2019-01-29
申请人： LG CHEM, LTD.
发明人： Kyung Min Kim
IPC分类号： H01M50/578 , H01M50/152 , H01M50/30 , H01M50/536 , H01M50/147 , H01M10/04 , H01M50/574 , H01M50/572 , H01M10/0587
摘要： A cylindrical secondary battery configured to have a structure to which an adhesion unit, including an adhesive material, a conductive material, and a gas-generating material, is provided. The adhesion unit is configured to couple a cap assembly, which functions as a positive electrode terminal of the cylindrical secondary battery, and a positive electrode tab of a jelly-roll type electrode assembly to each other.
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公开(公告)号：US10784489B2
公开(公告)日：2020-09-22
申请号：US15668795
申请日：2017-08-04
申请人： LG Chem, Ltd.
发明人： Kyung Min Kim , Joo Hwan Sung
IPC分类号： H01M2/22 , H01M10/04 , H01M2/26 , H01M10/0585
摘要： Provided is an electrode assembly. According to the present invention, a separator or an electrode may be prevented from being damaged by an electrode tab when an external impact is applied to a secondary battery or the electrode assembly to prevent short circuit from occurring in the secondary battery. To achieve the above object, the electrode assembly according to the present invention may include at least one electrode tab, and the electrode tab may include a conductive part and a non-conductive part (or a ductile part).
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公开(公告)号：US20200212416A1
公开(公告)日：2020-07-02
申请号：US16631329
申请日：2018-11-09
申请人： LG Chem, Ltd.
发明人： Kyoung Ho Kim , Jung Seok Choi , Song Taek Oh , Jong Pil Park , Kyung Min Kim
摘要： A secondary battery comprises: a pouch; an electrode assembly mounted within the pouch and having a structure in which electrodes and separators are alternately laminated, the electrode assembly having a tab connection part in which electrode tabs extending from ends of the electrodes overlap each other; a lead comprising a first lead having one end electrically connected to the tab connection part and a second lead having one end electrically connected to the first lead and the other end extending outside of the pouch, each of the first lead and the second lead being fixed to respective portions of an inner surface of the pouch; an adhesion unit mechanically and electrically coupling the first lead and the second lead to each other; and a high-voltage decomposition material that is configured to generate a gas when a high voltage having a predetermined level or more is applied to the adhesion unit.
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公开(公告)号：US10403924B2
公开(公告)日：2019-09-03
申请号：US15711584
申请日：2017-09-21
申请人： LG Chem, Ltd.
发明人： Kyung Min Kim , Joo Hwan Sung
摘要： A rechargeable battery comprises an electrode assembly having an electrode and a separator are alternately stacked and wound, a fixing tape attached to an exterior surface of the electrode assembly to prevent the electrode assembly from being unwound, and a battery case that receives the electrode assembly and the fixing tape therein. The fixing tape comprises a material that is expanded when an electrolyte is impregnated and absorbs an impact in the expanded state to buffer an impact applied to the electrode assembly.
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