公开(公告)号：US11916258B2

公开(公告)日：2024-02-27

申请号：US17282571

申请日：2019-10-04

Applicant: LG Chem, Ltd.

Inventor： Gyung Soo Kang ,  Jee Ho Kim ,  Yong Tae Lee ,  Myung Hoon Ko ,  Jung Il Park ,  Ki Youn Kim

IPC: H01M50/581 ,  H01M10/653 ,  H01M50/107 ,  H01M50/116 ,  H01M50/578 ,  H01M10/04

CPC classification number: H01M50/581 ,  H01M10/0422 ,  H01M10/0431 ,  H01M10/653 ,  H01M50/107 ,  H01M50/116 ,  H01M50/578 ,  H01M2200/10 ,  H01M2200/20

Abstract: A secondary battery comprises an electrode assembly, a can, and an insulator. The electrode assembly includes a first electrode, a separator, and a second electrode alternately stacked and wound. The can has an accommodation part accommodating the electrode assembly therein, and the can comprises a first can and a second can having cylindrical shapes open in a direction facing each other. The insulator insulates an overlapping portion between the first can and the second can. The first can is electrically connected to the first electrode, and the second can is electrically connected to the second electrode. The insulator has a short-circuit induction through-part defined by a through-hole or a cutoff line, such that a short circuit occurs between the first can and the second can through the short-circuit induction through-part when it is deformed in shape as heat or a pressure is applied to contract or expand the insulator.

公开(公告)号：US11940501B2

公开(公告)日：2024-03-26

申请号：US17281361

申请日：2019-10-04

Applicant: LG CHEM, LTD.

Inventor： Yong Tae Lee ,  Myung Hoon Ko ,  Jee Ho Kim ,  Gyung Soo Kang

IPC: G01R31/3842 ,  G01R31/385 ,  H01M10/44 ,  H01M10/48 ,  H02J7/00

CPC classification number: G01R31/3842 ,  G01R31/3865 ,  H01M10/44 ,  H01M10/48 ,  H02J7/0047

Abstract: The present invention relates to a method and an apparatus for diagnosing low voltage of a secondary battery cell. The method for diagnosing low voltage of a secondary battery cell according to an embodiment of the present invention includes pre-aging a battery cell, charging the battery cell according to a preset charging condition, measuring a parameter for determining low voltage failure of the battery cell, comparing the measured parameter with a reference parameter, and performing formation when the battery cell is determined to be normal.

公开(公告)号：US11605830B2

公开(公告)日：2023-03-14

申请号：US17253297

申请日：2020-03-12

Applicant: LG CHEM, LTD.

Inventor： Gyungsoo Kang ,  Yong Tae Lee ,  Jeeho Kim ,  Myung Hoon Ko

IPC: H01M10/04 ,  H01M10/63 ,  H01M50/673

Abstract: An apparatus for manufacturing a battery cell to enhance the electrolyte wettability to an electrode assembly in the battery cell is provided. The apparatus includes a battery cell tray in which one or more preliminary battery cells are housed and an excitation unit which makes a contact opposite to contacting one side of the battery cell tray to apply megasonic vibration to the preliminary battery cell in a state in which the preliminary battery cell is housed. A method for manufacturing a battery cell using the apparatus is also provided.

公开(公告)号：US20210344087A1

公开(公告)日：2021-11-04

申请号：US17282571

申请日：2019-10-04

Applicant: LG Chem, Ltd.

Inventor： Gyung Soo Kang ,  Jee Ho Kim ,  Yong Tae Lee ,  Myung Hoon Ko ,  Jung Il Park ,  Ki Youn Kim

IPC: H01M50/581 ,  H01M50/107 ,  H01M50/116 ,  H01M50/578 ,  H01M10/04 ,  H01M10/653

Abstract: A secondary battery comprises an electrode assembly, a can, and an insulator. The electrode assembly includes a first electrode, a separator, and a second electrode alternately stacked and wound. The can has an accommodation part accommodating the electrode assembly therein, and the can comprises a first can and a second can having cylindrical shapes open in a direction facing each other. The insulator insulates an overlapping portion between the first can and the second can. The first can is electrically connected to the first electrode, and the second can is electrically connected to the second electrode. The insulator has a short-circuit induction through-part defined by a through-hole or a cutoff line, such that a short circuit occurs between the first can and the second can through the short-circuit induction through-part when it is deformed in shape as heat or a pressure is applied to contract or expand the insulator.

公开(公告)号：US10541408B2

公开(公告)日：2020-01-21

申请号：US13738428

申请日：2013-01-10

Applicant: LG Chem, Ltd.

Inventor： Sun Jung Hwang ,  Sin Kyu Kim ,  Yong Tae Lee ,  Hyun Kuk Noh ,  Geun Chang Chung ,  Keun Wan An

IPC: H01M4/36 ,  H01M4/58 ,  H01M4/131 ,  H01M4/525 ,  H01M4/505 ,  H01M4/62 ,  H01M10/052 ,  H01M10/0525

Abstract: Provided is a composite electrode for a lithium secondary battery for improving output and a lithium secondary battery including the composite electrode, in which, in a composite electrode having two or more active materials mixed therein, an active material having a small particle size is included in the composite electrode by being coagulated and secondarily granulated so as to allow mixed active material particles to have a uniform size, and thus, electrical conductivity is improved to have high output characteristics.

公开(公告)号：US20130280610A1

公开(公告)日：2013-10-24

申请号：US13738428

申请日：2013-01-10

Applicant: LG CHEM, LTD.

Inventor： Sun Jung Hwang ,  Sin Kyu Kim ,  Yong Tae Lee ,  Hyun Kuk Noh ,  Geun Chang Chung ,  Keun Wan An

IPC: H01M4/131

CPC classification number: H01M4/131 ,  H01M4/364 ,  H01M4/505 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0525

Abstract: Provided is a composite electrode for a lithium secondary battery for improving output and a lithium secondary battery including the composite electrode, in which, in a composite electrode having two or more active materials mixed therein, an active material having a small particle size is included in the composite electrode by being coagulated and secondarily granulated so as to allow mixed active material particles to have a uniform size, and thus, electrical conductivity is improved to have high output characteristics.

Abstract translation: 提供一种用于改善输出的锂二次电池用复合电极和包括复合电极的锂二次电池，其中在具有两种或更多种活性材料的复合电极中混合有具有小粒径的活性材料 复合电极通过凝固并二次造粒使得混合的活性材料颗粒具有均匀的尺寸，从而提高导电性以具有高的输出特性。

公开(公告)号：US12132173B2

公开(公告)日：2024-10-29

申请号：US17282127

申请日：2019-10-01

Applicant: LG Chem, Ltd.

Inventor： Jung Il Park ,  Jee Ho Kim ,  Yong Tae Lee ,  Myung Hoon Ko ,  Ki Youn Kim ,  Gyung Soo Kang

IPC: H01M10/0587 ,  H01M10/04 ,  H01M50/107 ,  H01M50/536 ,  H01M50/538 ,  H01M50/10

CPC classification number: H01M10/0587 ,  H01M10/0431 ,  H01M50/107 ,  H01M50/536 ,  H01M50/538 ,  H01M50/10

Abstract: A secondary battery comprises an electrode assembly including a first electrode, a separator, and a second electrode alternately stacked and wound about a central axis. A first non-coating portion that is not coated with an electrode active material protrudes farther than the separator in a first direction along the central axis and a second non-coating portion that is not coated with the electrode active material protrudes farther than the separator in a second, opposite direction along the central axis. The first non-coating portion contacts a first connection part disposed on an end of a first can of the battery, and the second non-coating portion contacts a second connection part disposed on an end of a second can. At least one of the first connection part or the second connection part comprises a protrusion having a shape protruding towards the electrode assembly.

公开(公告)号：US09379387B2

公开(公告)日：2016-06-28

申请号：US13752739

申请日：2013-01-29

Applicant: LG CHEM, LTD.

Inventor： YoungHwa Jung ,  Young Sun Choi ,  Yong Tae Lee ,  Seung-tae Hong

IPC: H01M4/66 ,  H01B1/12 ,  H01M4/58 ,  H01M10/054 ,  H01M4/136

CPC classification number: H01M4/667 ,  H01B1/122 ,  H01M4/136 ,  H01M4/5815 ,  H01M4/662 ,  H01M4/668 ,  H01M10/054 ,  Y02E60/122

Abstract: Disclosed is a current collector prepared by coating a primer on a metallic base and a magnesium secondary battery including the same. The primer includes a conductive material and a polymer material and enhances adhesive strength between a cathode current collector and an active material, thereby maintaining stability in an operating voltage range of the battery without increasing internal resistance.

Abstract translation: 公开了通过在金属基底上涂布底漆和包含该集电体的镁二次电池制备的集电体。 引物包括导电材料和聚合物材料，并且增强了阴极集电器和活性材料之间的粘合强度，从而保持了电池工作电压范围的稳定性，而不增加内阻。

公开(公告)号：US12272782B2

公开(公告)日：2025-04-08

申请号：US17251968

申请日：2019-10-01

Applicant: LG CHEM, LTD.

Inventor： Myung Hoon Ko ,  Yong Tae Lee ,  Jung Il Park ,  Jee Ho Kim

IPC: H01M10/04 ,  H01M10/0587 ,  H01M50/107 ,  H01M50/116

Abstract: A secondary battery having an electrode assembly in which a positive electrode, a separator, and a negative electrode are alternately stacked, and a can configured to accommodate the electrode assembly is provided. The negative electrode is disposed on an end of the electrode assembly in a direction of one side of the electrode assembly so that a negative electrode non-coating portion protrudes more than the separator with respect to a direction of a winding center axis of the electrode assembly. The positive electrode is disposed on an end of the electrode assembly in a direction of the other side of the electrode assembly so that a positive electrode non-coating portion protrudes more than the separator with respect to the direction of the winding center axis of the electrode assembly. The can includes a first can contacting the positive electrode and a second can contacting the negative electrode.

公开(公告)号：US09331329B2

公开(公告)日：2016-05-03

申请号：US13623570

申请日：2012-09-20

Applicant: LG CHEM, LTD.

Inventor： Sang Hoon Choy ,  Yong Tae Lee ,  Hong Kyu Park ,  Sung-Kyun Chang

IPC: H01M4/02 ,  H01M4/36 ,  H01M4/52 ,  H01M4/131 ,  B60L11/18 ,  H01M4/58 ,  C01B25/45 ,  H01M4/62 ,  C01B25/37 ,  H01M10/052

CPC classification number: H01M4/131 ,  B60L11/1879 ,  B60L2200/30 ,  B60L2260/28 ,  C01B25/375 ,  C01B25/45 ,  H01M4/366 ,  H01M4/5825 ,  H01M4/62 ,  H01M4/625 ,  H01M10/052 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7005 ,  Y02T10/7011 ,  Y02T10/705

Abstract: Disclosed is a lithium iron phosphate with an olivine crystal structure wherein the lithium iron phosphate has a composition represented by the following Formula 1 and carbon (C) is coated on the surface of the lithium iron phosphate by chemical bonding via a heterogeneous element other than carbon. Li1+aFe1−xMx(PO4−b)Xb (1) (wherein M, X, a, x, and b are the same as defined in the specification).

Abstract translation: 公开了一种具有橄榄石晶体结构的磷酸铁锂，其中磷酸铁锂具有由下式1表示的组成，碳（C）通过除碳以外的异质元素进行化学键合而被涂覆在磷酸铁锂的表面上 。 Li1 + aFe1-xMx（PO4-b）Xb（1）（其中M，X，a，x和b与说明书中定义相同）。