公开(公告)号：US20230369694A1

公开(公告)日：2023-11-16

申请号：US18118908

申请日：2023-03-08

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Junkang Jacob Liu ,  Pingfan Wu ,  Jose Maria Benito ,  Walter R. Romanko ,  Lianzhou Chen

IPC: H01M50/204 ,  H01M50/505 ,  H01M50/434 ,  H01M50/446 ,  H01M50/46 ,  C09J7/38 ,  C09J183/04

CPC classification number: H01M50/204 ,  H01M50/505 ,  H01M50/434 ,  H01M50/446 ,  H01M50/461 ,  C09J7/38 ,  C09J183/04 ,  C09J2203/33 ,  C09J2301/302

Abstract: A battery assembly comprises an assembly housing, a plurality of battery modules disposed within the assembly housing and electrically coupled to a busbar, and at least one ceramifiable pad disposed within the assembly housing. Each battery module comprises a plurality of individual cells disposed within a module housing. The at least one ceramifiable pad is disposed between at least one of: at least two of the individual cells, at least two of the battery modules, the busbar and the assembly housing, or at least one of the battery modules and the assembly housing. The ceramifiable pad comprises a ceramifiable composition. Heating the ceramifiable composition to a temperature between 600 and 1600° C., inclusive, results in a ceramified composition. Ceramifiable compositions and methods of making them are also disclosed.

公开(公告)号：US20230365837A1

公开(公告)日：2023-11-16

申请号：US18118926

申请日：2023-03-08

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Junkang Jacob Liu ,  Pingfan Wu ,  Jose Maria Benito

IPC: C09J7/25 ,  C09J11/04 ,  C09J7/38 ,  H01M50/595

CPC classification number: C09J7/25 ,  C09J11/04 ,  C09J7/38 ,  H01M50/595 ,  C09J2203/33 ,  C09J2301/302 ,  C09J2301/41 ,  C09J2483/00 ,  C09J2483/006

Abstract: A ceramifiable composition comprises a crosslinked silicone matrix retaining stabilizing components. The stabilizing components comprise subcomponents: a) at least one of an aluminosilicate clay, aluminum oxide, or a hydrate thereof; b) at least one of phosphorus pentoxide, a polyphosphate, an inorganic phosphate salt, boron oxide, boric acid or a salt thereof; and c) at least one of an alkaline earth oxide, alkaline earth carbonate, or a hydrate thereof, and wherein heating the ceramifiable composition to a temperature between 600 and 1600 degrees Celsius, inclusive, results in a ceramified composition. An article including a layer of the ceramifiable composition and a method of making the same are also disclosed.

公开(公告)号：US20240304963A1

公开(公告)日：2024-09-12

申请号：US18269093

申请日：2021-12-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Pingfan Wu ,  Jose Maria Benito ,  Stephane Raymond Jacques Blanchot ,  Jean Louis Silvestre ,  Junkang Jacob Liu ,  Siwei Leng ,  Maria Jose Sanchez ,  David Bernard Andre Descoins

IPC: H01M50/588 ,  H01M50/209 ,  H01M50/293 ,  H01M50/505

CPC classification number: H01M50/588 ,  H01M50/209 ,  H01M50/293 ,  H01M50/505

Abstract: Provided is a battery assembly that includes a housing, one or more battery cells electrically coupled to a busbar, the one or more battery cells and busbar being received in the housing. A non-woven core layer is disposed between the busbar and housing, the non-woven core layer comprising a plurality of fibers, the plurality of fibers includes a plurality of oxidized polyacrylonitrile fibers and a coating disposed thereon that binds the plurality of oxidized polyacrylonitrile fibers to each other. Advantageously, the provided assemblies can exhibit extremely high electrical resistance, thermal resistance, and very high dielectric breakdown voltage.

公开(公告)号：US20240072345A1

公开(公告)日：2024-02-29

申请号：US18269366

申请日：2021-12-23

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Jose Maria Benito ,  Maria Jose Sanchez ,  Stephane Stephan ,  Pingfan Wu ,  Jean Louis Silvestre ,  David Bernard Andre Descoins

IPC: H01M50/202 ,  H01M50/143 ,  H01M50/44 ,  H01M50/494 ,  H01M50/505

CPC classification number: H01M50/202 ,  H01M50/143 ,  H01M50/44 ,  H01M50/494 ,  H01M50/505

Abstract: Provided is a battery assembly that includes an electrically-conductive housing (510A, 510B), one or more battery modules (512) electrically coupled to a busbar (522), the one or more battery modules and busbar being received in the housing. A non-woven core layer (506) is disposed between the busbar and electrically-conductive housing, the non-woven core layer comprising a plurality of fibers, the plurality of fibers comprising 60-100 wt % of oxidized polyacrylonitrile fibers. The non-woven core layer can exhibit a breakdown voltage of at least 0.9 kV at ambient conditions after exposure to 500° C. for 5 minutes.