公开(公告)号：EP4297115A1

公开(公告)日：2023-12-27

申请号：EP22849731.9

申请日：2022-06-28

Applicant: LG Energy Solution, Ltd.

Inventor： JANG, Jin-Su ,  KIM, Sue-Jin ,  RYU, Duk-Hyun ,  PARK, Geun-Ho ,  PARK, Sang-Jin ,  LEE, Kwan-Hee ,  LEE, Yun-Ju

IPC: H01M4/04 ,  F26B3/04 ,  F26B3/18 ,  F26B3/30

Abstract: A drying device according to an embodiment of the present disclosure includes a first drying unit configured to dry an electrode active material located in a coating boundary region including a boundary of a portion in which the electrode active material is coated and a portion in which the electrode active material is not coated on an electrode current collector, and a second drying unit configured to dry the electrode active material coated on the electrode current collector as a whole.

公开(公告)号：EP4376130A1

公开(公告)日：2024-05-29

申请号：EP22890492.6

申请日：2022-11-08

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： LEE, Yun-Ju ,  RYU, Duk-Hyun ,  LEE, Kwan-Hee ,  KIM, Sue-Jin ,  PARK, Geun-Ho ,  SON, Seung-Yeon ,  JANG, Jin-Su

IPC: H01M4/66 ,  H01M4/131 ,  H01M4/70 ,  H01M10/0587 ,  H01M50/533 ,  H01M50/538 ,  H01M50/107 ,  H01M50/167 ,  H01M50/213

CPC classification number: Y02E60/10 ,  Y02P70/50 ,  H01M10/0587 ,  H01M4/13 ,  H01M50/213 ,  H01M50/533 ,  H01M50/167 ,  H01M4/70 ,  H01M50/107 ,  H01M50/538 ,  H01M4/66 ,  H01M4/131

Abstract: The present disclosure discloses a current collector for a secondary battery. The current collector for a secondary battery is characterized in that an elongation is 1.5 to 3.0% and a tensile strength is 25 to 35 kgf/mm2. According to the present disclosure, since the elongation and tensile strength of the current collector are optimally set, the camber length is lowered to less than 20 mm when manufacturing the electrode plate, and there is no meandering or breaking defects during the jelly-roll winding process.