公开(公告)号：EP3859829A1

公开(公告)日：2021-08-04

申请号：EP21152220.6

申请日：2021-01-19

申请人： LG CHEM, LTD.

发明人： CHAE, Byung Joon ,  KIM, Yongjun ,  KIM, Jonggeol ,  JEONG, Jong Seok

IPC分类号： H01M4/134 ,  H01M10/0525 ,  H01M10/42 ,  H01M50/105 ,  H01M4/131 ,  H01M4/38 ,  H01M10/04

摘要： The present invention relates to a method for analyzing a swelling behavior of a lithium secondary battery, comprising (S1) installing a detachable pressurizing holder for fixing a battery sample and a charge/discharge cable connected with an external charging/discharging device to an X-ray CT (computed tomography) imaging equipment; (S2) inserting the battery sample into the pressurizing holder, contacting an electrode lead of the battery sample with a terminal of the charge/discharge cable, and then operating the external charging/discharging device to perform charging and discharging; and (S3) during charging and discharging of the battery sample, irradiating and scanning X-ray on the battery sample at an angle ranging from -10° to 10° to obtain a 3D image while rotating the battery sample, and then measuring a change in the thickness of the electrode inside the battery sample from the 3D image.

公开(公告)号：EP3786646A1

公开(公告)日：2021-03-03

申请号：EP19874260.3

申请日：2019-10-15

申请人： LG CHEM, LTD.

发明人： CHOI, Byung Hee ,  CHAE, Byung Joon ,  HAN, Jung Hoon ,  BYEON, Ji Yeon

IPC分类号： G01Q30/20 ,  G01Q30/04 ,  G06T1/00 ,  G06T5/50 ,  G01N1/44 ,  H01M4/13

摘要： The present disclosure relates to a method for analyzing an electrode for a battery, which is capable of more easily distinguishing between the constituent materials of the electrode using scanning spreading resistance microscopy.

公开(公告)号：EP3640025A2

公开(公告)日：2020-04-22

申请号：EP18855911.6

申请日：2018-08-10

申请人： LG Chem, Ltd.

发明人： BYUN, Jin Seok ,  CHAE, Byung Joon ,  KIM, Jae Young ,  CHANG, Yeong Rae ,  SHIN, Yun U

IPC分类号： B32B27/20 ,  C08K9/04 ,  B32B27/30 ,  B32B27/38 ,  C08K3/36 ,  C08K3/22 ,  B32B3/30

摘要： A hard coating film including a base layer including: a polymer binder resin; first inorganic particles which are dispersed in the polymer binder resin and have an average particle size of 5 nm to 70 nm; and second inorganic particles which are dispersed in the polymer binder resin and have an average particle size of 70 nm to 150 nm is provided, wherein a content of the second inorganic particles having an average particle size of 70 nm to 150 nm is 4 % by weight to 12 % by weight, and with regard to at least two of the second inorganic particles, a distance between one surface of the base layer and the center of the second inorganic particle in a direction perpendicular to one surface of the base layer is 35 nm to 5.0 µm, and the at least two second inorganic particles may be adjacent to each other in a horizontal direction to one surface of the base layer while being spaced apart by a distance of 0.1 µm to 1.5 µm.