Acid battery pasting carrier

Patent metadata

Field	Value
Publication number	US-11417889-B2
Application number	US-202016803493-A
Country	US
Kind code	B2
Filing date	Feb 27, 2020
Priority date	Feb 22, 2017
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

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 battery, comprising:
a first electrode, comprising:
a first highly conductive grid;
a first pasting carrier comprising a nonwoven fiber mat having a thickness between 5 and 50 mils, the nonwoven fiber mat comprising a plurality of entangled glass microfibers; and
a first conductive material coupled to the first pasting carrier and to the first highly conductive grid;
wherein a wettability of the first pasting carrier enables the first pasting carrier to support the first conductive material by absorbing a portion of the first conductive material while preventing the first conductive material from passing through the first pasting carrier; and
a non-fibrous polymer component introduced into the nonwoven fiber mat, the non-fibrous polymer component being homogenously dispersed across a thickness of the nonwoven fiber mat.

2. The battery of claim 1 , wherein the first electrode is a positive electrode and the first conductive material comprises lead oxide paste.

3. The battery of claim 1 , wherein the first electrode is a negative electrode and the first conductive material comprises lead oxide paste.

4. The battery of claim 1 , comprising a second electrode, the second electrode comprising a second highly conductive grid, and a second pasting carrier having a thickness between 15 and 30 mils and an air permeability between 0.31 and 7.5 centimeters per second, the nonwoven fiber mat comprising a plurality of entangled glass microfibers, a second conductive material coupled to the second pasting carrier and to the second highly conductive grid, wherein the wettability of the second pasting carrier enables the second pasting carrier to absorb a portion of the second conductive material while preventing the second conductive material from passing through the second pasting carrier.

5. The battery of claim 1 , wherein the plurality of entangled glass microfibers comprise between 30 and 60 weight percentage of smaller sized glass microfibers having average fiber diameter of between 250 and 450 nanometers.

6. The battery of claim 2 , wherein the plurality of entangled glass microfibers comprise between 0 and 40 weight percentage of larger sized glass microfibers having an average fiber diameter of between 0.65 and 1 microns.

7. The battery of claim 6 , wherein the plurality of entangled glass microfibers comprise between 25 and 45 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.

8. The battery of claim 1 , wherein the polymer component comprises polypropylene.

Assignees

• Johns Manville

Inventors

• Himstedt Heath H
• Nandi Souvik
• Scherlein John

Classifications

• H01M50/417

  Polyolefins · CPC title

• H01M50/437

  Glass · CPC title

• H01M4/82

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

• H01M4/664 Primary

  Ceramic materials · CPC title

• H01M2220/20

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