公开(公告)号：US20230018424A1

公开(公告)日：2023-01-19

申请号：US17844445

申请日：2022-06-20

申请人： SK On Co., Ltd.

发明人： Ji Won NA ,  Sung Yeop KIM ,  Eun Soo CHO

IPC分类号： H01M10/44 ,  H01M10/0525 ,  H01M10/058 ,  H01M50/609

摘要： A method for charging and discharging a battery, includes, operations of: manufacturing a battery by coupling a battery case and battery electrodes and injecting an electrolyte into the battery case; and activating a battery by inputting a current pulse having a predetermined period to the battery electrodes, wherein the period includes a first time and a second time, equal to or less than the first time, wherein the battery is charged by the current pulse during any one of the first time and the second time, and the battery is discharged by the current pulse during the other one of the first time the second time.

公开(公告)号：US20240241188A1

公开(公告)日：2024-07-18

申请号：US18393683

申请日：2023-12-22

申请人： SK On Co., Ltd.

发明人： Ji Won NA ,  Jae Ram KIM ,  Sang Won BAE ,  Ji Hee BAE ,  Yeon Hwa SONG ,  Ki Joo EOM ,  Myung Ro LEE ,  Jae Yeong LEE ,  Hyun Joong JANG

IPC分类号： G01R31/396 ,  G01R31/3842 ,  H01M10/42 ,  H02J7/00

CPC分类号： G01R31/396 ,  G01R31/3842 ,  H01M10/4285 ,  H02J7/0048

摘要： An apparatus and method for detecting a defective battery cell is proposed. The proposed apparatus includes a charger for supplying current to cause a battery cell to maintain a constant voltage, a measurement part for measuring the voltage and current of the battery cell, and a controller for determining whether a defect exists in the battery cell on the basis of the current measured by the measurement part, whereby the defective battery cell may be detected with high accuracy, a time required for the detection may be shortened, and a space required for the detection may also be reduced.

公开(公告)号：US20220328898A1

公开(公告)日：2022-10-13

申请号：US17719694

申请日：2022-04-13

申请人： SK On Co., Ltd.

发明人： Sung Yeop KIM ,  Jin Go KIM ,  Ji Won NA ,  Eun Soo CHO

IPC分类号： H01M10/647 ,  H01M10/44 ,  H01M50/105

摘要： Proposed is a method of manufacturing a secondary battery. The method includes inserting an electrode assembly into a pouch, injecting an electrolyte into the pouch and aging, charging the electrode assembly, degassing to discharge gas from the pouch, discharging the electrode assembly, and charging to a shipment charge level. Since an anode active material is added to an anode material of a secondary battery through the method, there is an effect of further enhancing the reliability of the secondary battery in the manufacturing method of the secondary battery.

公开(公告)号：US20230282913A1

公开(公告)日：2023-09-07

申请号：US18179881

申请日：2023-03-07

申请人： SK On Co., Ltd.

发明人： Eun Soo CHO ,  Sung Yeop KIM ,  Ji Won NA ,  Gyu Rim PARK

IPC分类号： H01M50/143 ,  H01M10/052 ,  H01M50/383 ,  H01M50/119 ,  H01M50/121

CPC分类号： H01M50/143 ,  H01M10/052 ,  H01M50/383 ,  H01M50/119 ,  H01M50/121 ,  H01M2220/30

摘要： Provided is a secondary cell including a Y-type zeolite adsorbent. The secondary cell including a Y-type zeolite adsorbent of the present invention may remove gas such as carbon dioxide and hydrogen fluoride produced inside by adsorption to prevent a sealing part from being pushed, and improve stability such as maintaining secondary cell performance, increasing a cell life, and preventing ignition.

公开(公告)号：US20230238613A1

公开(公告)日：2023-07-27

申请号：US18101453

申请日：2023-01-25

申请人： SK On Co., Ltd.

发明人： Gyu Rim PARK ,  Sung Yeop KIM ,  Ji Won NA ,  Eun Soo CHO

IPC分类号： H01M50/105 ,  H01M10/04

CPC分类号： H01M50/105 ,  H01M10/0459 ,  H01M2004/028

摘要： Provided is a pouch type secondary battery including a jelly roll in which a plurality of unit cells including a structure of a separator interposed between a positive electrode and a negative electrode are laminated, wherein a unit cell positioned in an outermost layer of the jelly roll includes a carbon dioxide adsorbent.

公开(公告)号：US20240339666A1

公开(公告)日：2024-10-10

申请号：US18623031

申请日：2024-04-01

申请人： SK ON CO., LTD.

发明人： Jae Yeong LEE ,  Jae Ram KIM ,  Ji Won NA ,  Sang Won BAE ,  Ji Hee BAE ,  Yeon Hwa SONG ,  Ki Joo EOM ,  Myung Ro LEE ,  Yong Seok LEE ,  Hyun Joong JANG

IPC分类号： H01M10/0569 ,  H01M4/131 ,  H01M4/133 ,  H01M4/525 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0568

CPC分类号： H01M10/0569 ,  H01M4/131 ,  H01M4/133 ,  H01M4/525 ,  H01M4/587 ,  H01M10/052 ,  H01M10/0568 ,  H01M2300/004

摘要： A lithium secondary battery includes a cathode including a cathode active material that includes a lithium metal oxide, an anode facing the cathode and including an anode electrode active material that includes a graphite-based active material and a silicon-carbon composite, and an electrolyte solution including a lithium salt and an organic solvent, the lithium salt including lithium bis(fluorosulfonyl)imide (LiFSI) and the organic solvent including an acetate-based solvent. A content of the silicon-carbon composite is in a range from 5 wt % to 12 wt % based on a total weight of the anode active material.

公开(公告)号：US20240006606A1

公开(公告)日：2024-01-04

申请号：US18338277

申请日：2023-06-20

申请人： SK ON CO., LTD.

发明人： Yong Seok LEE ,  Jae Ram KIM ,  Ji Won NA ,  Sang Won BAE ,  Yeon Hwa SONG ,  Ki Joo EOM ,  Myung Ro LEE ,  Jae Yeong LEE ,  Hyun Joong JANG

IPC分类号： H01M4/525 ,  H01M4/505 ,  H01M4/133 ,  H01M10/0525

CPC分类号： H01M4/525 ,  H01M4/505 ,  H01M4/133 ,  H01M10/0525 ,  H01M2004/028

摘要： A cathode for a lithium secondary battery includes a cathode current collector, and a cathode active material layer formed on the cathode current collector. The cathode active material layer includes a cathode active material and a conductive material ID/IG is in a range from 0.5 to 1.25 in a Raman spectrum of the cathode active material layer. The cathode active material includes lithium metal oxide particles containing nickel and manganese and having a content of cobalt of less than 2 mol % among all elements except for lithium and oxygen.