公开(公告)号：US20190237732A1

公开(公告)日：2019-08-01

申请号：US16319911

申请日：2017-08-14

Applicant: BYD COMPANY LIMITED

Inventor： Jialing HU ,  Ronghua LIU ,  Jun SHAN ,  Long HE

IPC: H01M2/16 ,  H01M2/14 ,  H01M10/0525

CPC classification number: H01M2/1633 ,  B32B2305/30 ,  H01M2/145 ,  H01M2/1653 ,  H01M2/1666 ,  H01M2/168 ,  H01M2/1686 ,  H01M10/052 ,  H01M10/0525

Abstract: The disclosure relates to the field of lithium-ion batteries, and discloses a lithium-ion battery separator, a method for preparing same, and a lithium-ion battery. The lithium-ion battery separator includes: a porous basement membrane, and a heat-resistant layer covering at least one side surface of the porous basement membrane, where the heat-resistant layer contains a high-temperature-resistant polymer and inorganic nanometer particles; and the heat-resistant layer has a fiber-network shaped structure.