公开(公告)号：US11133559B2

公开(公告)日：2021-09-28

申请号：US16474992

申请日：2017-12-01

Applicant: BYD COMPANY LIMITED

Inventor： Jialing Hu ,  Jun Shan ,  Long He

IPC: H01M50/44 ,  B01D69/14 ,  B01D71/34 ,  B01D71/40 ,  H01M10/0525 ,  H01M50/411 ,  H01M50/403

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：US11223090B2

公开(公告)日：2022-01-11

申请号：US16328993

申请日：2017-08-14

Applicant: BYD COMPANY LIMITED

Inventor： Jialing Hu ,  Jun Shan ,  Gang Hu ,  Long He

IPC: H01M50/449 ,  B32B27/12 ,  B32B9/00 ,  B32B7/12 ,  B32B7/00 ,  H01M50/44 ,  H01M50/411 ,  H01M50/431 ,  H01M50/46 ,  B32B27/00 ,  H01M10/052 ,  H01M50/403 ,  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：US11264674B2

公开(公告)日：2022-03-01

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 ,  H01M50/454 ,  H01M50/426 ,  H01M50/491 ,  H01M50/434 ,  H01M50/42

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.