Acid battery pasting carrier

Patent metadata

Field	Value
Publication number	US-10622639-B2
Application number	US-201715439687-A
Country	US
Kind code	B2
Filing date	Feb 22, 2017
Priority date	Feb 22, 2017
Publication date	Apr 14, 2020
Grant date	Apr 14, 2020

Abstract

A pasting carrier for a lead-acid battery. The pasting carrier includes a nonwoven fiber mat having a thickness between 5 and 50 mils, the nonwoven fiber mat being composed of a plurality of entangled glass microfibers.

First claim

What is claimed is:

1. A pasting carrier for a lead-acid battery comprising:
a nonwoven fiber mat having a thickness between 5 and 50 mils, the nonwoven fiber mat being composed of a plurality of entangled glass microfibers in which the glass microfibers include:
between 30 and 60 weight percentage of smaller sized glass microfibers having an average fiber diameter between 150 and 550 nanometers; and
larger sized glass microfibers having an average fiber diameter between 0.6 and 6 microns; and in which the nonwoven fiber mat includes:
between 15 and 60 weight percentage of a binder that binds the smaller sized glass microfibers and the larger sized glass microfibers together, the smaller sized glass microfibers and the larger sized glass microfibers being substantially homogenously or uniformly distributed and blended throughout the nonwoven fiber mat; and
a non-fibrous polymer component introduced into the nonwoven fiber mat as a polymer emulsion, wherein the non-fibrous polymer component is homogenously dispersed across a thickness of the nonwoven fiber mat.

2. The pasting carrier of claim 1 , the pasting carrier comprises a single layer structure.

3. The pasting carrier of claim 1 , wherein the pasting carrier exhibits a puncture resistance of at least 2 pounds per square inch and a strength of between 2.8 and 8 pounds per inch.

4. The pasting carrier of claim 1 , wherein the non-fibrous polymer component comprises polypropylene.

5. The pasting carrier of claim 1 , wherein the nonwoven fiber mat is substantially free of (or does not include) fibers having a diameter smaller than 200 nm.

6. The pasting carrier of claim 1 , wherein the nonwoven fiber mat is substantially free of (or does not include) fibers having a diameter greater than 1 μm.

7. The pasting carrier of claim 1 , wherein the non-fibrous polymer component comprises polyethylene.

8. The pasting carrier of claim 1 , wherein the pasting carrier comprises up to 30% of the non-fibrous polymer component.

Assignees

• Johns Manville

Inventors

• Himstedt Heath H
• Nandi Souvik
• Scherlein John

Classifications

• H01M4/82

  Multi-step processes for manufacturing carriers for lead-acid accumulators · CPC title

• H01M10/06 Primary

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

• H01M4/664 Primary

  Ceramic materials · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M2/1633

  Electricity · mapped topic