Embossed separators, batteries and methods

Patent metadata

Field	Value
Publication number	US-2016372732-A1
Application number	US-201615254350-A
Country	US
Kind code	A1
Filing date	Sep 1, 2016
Priority date	Nov 21, 2011
Publication date	Dec 22, 2016
Grant date	—

Abstract

An improved, new, modified, or more robust embossed battery separator for a storage battery, a method for its production, an envelope embossed separator, batteries including the embossed separators and/or envelopes, and/or related methods for the production and/or use of the embossed separators, embossed envelopes, and/or batteries including such embossed separators and/or envelopes.

First claim

1 - 8 . (canceled)

9 . A battery separator for a storage battery comprising:
a microporous membrane having an embossed rib and a densified rigid internal skeletal frame; wherein said embossed rib runs in a longitudinal direction; and wherein said densified rigid internal skeletal frame is made up of compressed portions of former membrane transverse ribs of lesser height than said embossed rib.

10 . The battery separator of claim 9 wherein said embossed rib is sinusoidal.

11 . The battery separator of claim 9 wherein said microporous membrane comprising a mixture of a thermoplastic polymer and a filler, and having a plurality of micropores therethrough.

12 . The battery separator of claim 9 wherein said microporous membrane comprises a mixture of a thermoplastic polymer, a filler, and a pore former.

13 . The battery separator of claim 9 wherein said microporous membrane exhibits a 5% or less change over time in a parameter selected from the group consisting of thickness, resiliency, and/or compression.

14 . The battery separator of claim 9 further comprising a pasting paper adhered to at least one face of the microporous membrane.

15 . The battery separator of claim 14 wherein said pasting paper comprises a nonwoven material.

16 . The battery separator of claim 14 wherein said pasting paper comprises a rib co-embossed with said microporous membrane.

17 . The battery separator of claim 14 further comprising a gelling agent adhered to said pasting paper.

18 . The battery separator of claim 9 further comprising a nonwoven adhered to a face of the microporous membrane.

19 . The battery separator of claim 18 wherein said nonwoven comprises at least one of a gelling agent, sodium sulfate, chemically active minerals, or carbonaceous materials.

20 . The battery separator of claim 18 wherein said nonwoven comprises a rib co-embossed with said microporous membrane.

21 . The battery separator of claim 9 further comprising co-embossed material adhered to a face of said microporous membrane.

22 . The battery separator of claim 9 wherein said microporous membrane being in a form selected from the group consisting of an envelope, a leaf, or a wrapping.

23 . A battery comprising the separator of claim 9 .

24 . A battery comprising the separator of claim 14 .

25 . A battery comprising the separator of claim 16 .

26 . A battery comprising the separator of claim 18 .

27 . A battery comprising the separator of claim 20 .

28 . The battery separator of claim 9 wherein said densified rigid internal skeletal frame comprises compressed portions of former membrane longitudinal calendered ribs of lesser height than said embossed rib.

29 . A battery comprising the separator of claim 28 .

30 . A battery separator for a storage battery comprising:
a microporous membrane having an embossed rib and a densified rigid internal skeletal frame; wherein said embossed rib runs in a longitudinal direction; wherein said densified rigid internal skeletal frame is made up of compressed portions of at least one of former calendered membrane longitudinal ribs and transverse ribs; wherein said former membrane longitudinal ribs are of lesser height than said embossed rib; and wherein said former membrane transverse ribs are of lesser height than said longitudinal ribs.

31 . A battery comprising the separator of claim 30 .

32 . The battery separator of claim 30 further comprising a pasting paper adhered to a face of the microporous membrane.

33 . The battery separator of claim 30 further comprising a nonwoven adhered to a face of the microporous membrane.

34 . The battery separator of claim 33 wherein said nonwoven comprises least one of a gelling agent, sodium sulfate, chemically active minerals, or carbonaceous materials.

35 . A storage battery comprising the separator of claim 32 .

36 . A storage battery comprising the separator of claim 33 .

37 . A storage battery comprising the separator of claim 34 .

Assignees

• Daramic Llc

Inventors

• Miller Eric H
• Chambers Jeffrey K
• Timmons John R

Classifications

• H01M10/0585

  of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators · CPC title

• H01M10/06

  Lead-acid accumulators (semi-lead accumulators H01M10/20) · CPC title

• H01M4/14

  Electrodes for lead-acid accumulators · CPC title

• H01M10/12 Primary

  Construction or manufacture · CPC title

• H01M50/454

  comprising a non-fibrous layer and a fibrous layer superimposed on one another · CPC title