公开(公告)号：US20190326577A1

公开(公告)日：2019-10-24

申请号：US16474992

申请日：2017-12-01

Applicant: BYD COMPANY LIMITED

Inventor： Jialing HU ,  Jun SHAN ,  Long HE

IPC: H01M2/16 ,  H01M10/0525 ,  H01M2/14 ,  B01D69/14 ,  B01D71/34 ,  B01D71/40

Abstract: A polymer composite membrane, a method for fabricating same, and a lithium-ion battery including same are provided. The polymer composite membrane includes a porous base membrane and a heat-resistant layer covering at least one side surface of the porous base membrane, the heat-resistant layer includes a plurality of heat-resistant sub-layers sequentially stacked, and pore-blocking temperatures of the heat-resistant sub-layers are sequentially increased from inside to outside; each of the heat-resistant sub-layers includes at least one of a first heat-resistant polymer material and a second heat-resistant polymer material, and each of the heat-resistant sub-layers is separately configured as a fiber network structure; the melting point of the first heat-resistant polymer material is not less than 200° C.; and the melting point of the second heat-resistant polymer material is not less than 100° C.

公开(公告)号：US20190207190A1

公开(公告)日：2019-07-04

申请号：US16328993

申请日：2017-08-14

Applicant: BYD COMPANY LIMITED

Inventor： Jialing HU ,  Jun SHAN ,  Gang HU ,  Long HE

IPC: H01M2/16 ,  H01M2/14

CPC classification number: H01M2/1666 ,  H01M2/145 ,  H01M2/162 ,  H01M2/1646 ,  H01M2/1653 ,  H01M2/168 ,  H01M2/1686 ,  H01M10/052 ,  H01M10/0525

Abstract: The disclosure provides a polymer composite membrane, a method for preparing same, and a lithium-ion battery including same. The polymer composite membrane includes a polymer base membrane, where the polymer base membrane includes a first surface and a second surface disposed opposite to each other, and the polymer composite membrane further includes a first ceramic layer, a first heat-resistant fiber layer, and a first bonding layer disposed sequentially from inside out on the first surface of the polymer base membrane, where materials of the first heat-resistant fiber layer contain a first polymeric material and a second polymeric material.

公开(公告)号：US20210288381A1

公开(公告)日：2021-09-16

申请号：US16328601

申请日：2017-08-14

Applicant: BYD Company Limited

Inventor： Jialing HU ,  Jun SHAN ,  Jinxiang WU ,  Long HE

IPC: H01M50/417 ,  H01M50/434 ,  H01M50/491 ,  H01M50/454 ,  H01M50/42 ,  H01M50/426

Abstract: The disclosure relates to the field of lithium-ion batteries, and discloses a polymer composite membrane and a method for preparing same. The disclosure further includes a lithium-ion battery for which the foregoing polymer composite membrane is used. The polymer composite membrane includes a porous base membrane and a heat-resistant fiber layer covering at least one side surface of the porous base membrane, where materials of the heat-resistant fiber layer contain a first polymeric material and a second polymeric material.

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.