公开(公告)号：US20240413380A1

公开(公告)日：2024-12-12

申请号：US18737132

申请日：2024-06-07

Applicant: LG Energy Solution, Ltd.

Inventor： Min Wook Lee ,  Ju Young Yun ,  Seok Jin Oh ,  Joo Hwan Sung ,  Hee Chang Youn ,  Ji Min Park ,  Jin Young Park ,  Hye In Ko ,  Ran Eun Lee

IPC: H01M10/052 ,  H01M4/02 ,  H01M4/131 ,  H01M4/133 ,  H01M4/36 ,  H01M4/525 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0568 ,  H01M50/204

Abstract: The present disclosure relates to a lithium secondary battery with improved safety during thermal runaway. The lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolyte, and has a nominal voltage of 3.68 V or greater, and VT represented by Equation (1) below measured after manufacturing a test module by stacking four of the lithium secondary battery fully charged by being charged to 4.35 V is 4 Ah/sec or less: Equation (1): VT=Ctotal/t.

公开(公告)号：US12224394B2

公开(公告)日：2025-02-11

申请号：US18737132

申请日：2024-06-07

Applicant: LG Energy Solution, Ltd.

Inventor： Min Wook Lee ,  Ju Young Yun ,  Seok Jin Oh ,  Joo Hwan Sung ,  Hee Chang Youn ,  Ji Min Park ,  Hye In Ko ,  Ran Eun Lee ,  Jin Young Park

IPC: H01M10/052 ,  H01M4/131 ,  H01M4/133 ,  H01M4/36 ,  H01M4/525 ,  H01M4/587 ,  H01M4/62 ,  H01M10/0568 ,  H01M50/204 ,  H01M4/02

Abstract: The present disclosure relates to a lithium secondary battery with improved safety during thermal runaway. The lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolyte, and has a nominal voltage of 3.68 V or greater, and VT represented by Equation (1) below measured after manufacturing a test module by stacking four of the lithium secondary battery fully charged by being charged to 4.35 V is 4 Ah/sec or less: Equation (1): VT=Ctotal/t.

公开(公告)号：US20250054975A1

公开(公告)日：2025-02-13

申请号：US18933367

申请日：2024-10-31

Applicant: LG Energy Solution, Ltd.

Inventor： Min Wook Lee ,  Joo Hwan Sung ,  Hee Chang Youn ,  Ju Young Yun ,  Seok Jin Oh ,  Ji Min Park

IPC: H01M4/525 ,  H01M4/02 ,  H01M4/04 ,  H01M4/36 ,  H01M4/505 ,  H01M4/583 ,  H01M10/052 ,  H01M10/0568 ,  H01M50/204

Abstract: The present disclosure relates to a lithium secondary battery with improved safety during thermal runaway. The lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode including a negative electrode active material, and an electrolyte, and has a nominal voltage of 3.68 V or greater, and VP represented by Equation (1) below is 4 mbar·Ah−1·sec−1 or less: Equation (1): VP=ΔP/(tmax×C).