公开(公告)号：US20240347822A1

公开(公告)日：2024-10-17

申请号：US18750879

申请日：2024-06-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xianglong DU ,  Yikuang JIN ,  Hu XU ,  Shaojun NIU

IPC: H01M50/147 ,  H01M50/342 ,  H01M50/474

CPC classification number: H01M50/147 ,  H01M50/342 ,  H01M50/474 ,  H01M2200/10 ,  H01M2200/20

Abstract: An end cover assembly includes an end cover and a current collecting member, and the end cover is provided with a pressure relief structure. The current collecting member is located on one side of the end cover facing the interior of the battery cell and including a current collecting portion and an assembling portion. The assembling portion is located between the end cover and the current collecting portion and is configured to be connected to the end cover and the current collecting portion. The current collecting portion is provided with a pressure relief hole for allowing fluid to pass. First supporting members and a second supporting member are separately arranged on two side surfaces, facing each other, of the end cover and the current collecting portion. Projections of the first supporting members and a projection of the second supporting member are intersected in a thickness direction of the end cover.

公开(公告)号：US20240047647A1

公开(公告)日：2024-02-08

申请号：US18382876

申请日：2023-10-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xianglong DU

IPC: H01M4/134 ,  H01M10/0525 ,  H01M50/209

CPC classification number: H01M4/134 ,  H01M10/0525 ,  H01M50/209 ,  H01M2004/021

Abstract: A lithium iron phosphate positive electrode plate includes a positive electrode current collector and a positive electrode active material located on the positive electrode current collector. The positive electrode active material includes: first lithium iron phosphate particles having a volume average diameter D50 of 60 nm to 300 nm and a specific surface area greater than 15 m2/g, and second lithium iron phosphate particles having a volume average diameter D50 greater than 800 nm and a specific surface area smaller than 10 m2/g.