公开(公告)号：US11967687B2

公开(公告)日：2024-04-23

申请号：US18350752

申请日：2023-07-12

申请人： SHENZHEN JIECHENG NICKEL COBALT NEW ENERGY TECHNOLOGY CO., LTD.

发明人： Meimei Chen

IPC分类号： H01M10/54 ,  B09B3/32 ,  B09B101/16

CPC分类号： H01M10/54 ,  B09B3/32 ,  B09B2101/16

摘要： A safe discharge method for waste lithium ion batteries includes steps of mixing the waste lithium ion batteries and conductive particles in a discharge chamber to make the waste lithium ion batteries to discharge, calculating an internal resistance of the discharge chamber according to pressurization pressure; calculating a discharge rate of the waste lithium ion batteries; dynamically adjusting the pressurization pressure to keep the discharge rate of the waste lithium ion batteries to be 0.1-3 C; monitoring an internal temperature of the discharge chamber in real time; when the internal temperature is greater than an early warning temperature, reducing the pressurization pressure by 20%-60%; when the internal temperature is greater than a warning temperature, relieving the pressurization pressure to 0 N, reducing the pressurization pressure by 60%-90% after the internal temperature drops below the early warning temperature, and re-compacting to discharge the waste lithium ion batteries.