Separators, batteries, systems, and methods for idle start stop vehicles

Patent metadata

Field	Value
Publication number	US-12215228-B2
Application number	US-202217678503-A
Country	US
Kind code	B2
Filing date	Feb 23, 2022
Priority date	Sep 22, 2010
Publication date	Feb 4, 2025
Grant date	Feb 4, 2025

Abstract

In accordance with at least selected embodiments or aspects, the present invention is directed to improved, unique, and/or high performance ISS lead acid battery separators, such as improved ISS flooded lead acid battery separators, ISS batteries including such separators, methods of production, and/or methods of use. The preferred ISS separator may include negative cross ribs and/or PIMS minerals. In accordance with more particular embodiments or examples, a PIMS mineral (preferably fish meal, a bio-mineral) is provided as at least a partial substitution for the silica filler component in a silica filled lead acid battery separator (preferably a polyethylene/silica separator formulation). In accordance with at least selected embodiments, the present invention is directed to new or improved batteries, separators, components, and/or compositions having heavy metal removal capabilities and/or methods of manufacture and/or methods of use thereof.

First claim

The invention claimed is:

1. A membrane for an acid-containing battery, the membrane in the shape of a flat sheet, and wherein the membrane comprises a polymer, oil, and a filler comprised of silica and fish meal, wherein the filler comprises 10-50% fish meal, and the silica has a surface area greater than 200 m 2 /g.

2. The membrane of claim 1 , wherein the membrane is a microporous polyolefin membrane.

3. The membrane of claim 2 , wherein the polymer is a polyolefin.

4. The membrane of claim 3 , wherein the silica to polymer ratio is from 3.0/1.0 to 5.0/1.0.

5. The membrane of claim 3 , wherein the silica to polymer ratio is from 3.0/1.0 to 4.0/1.0.

6. The membrane of claim 1 , wherein the membrane is a macroporous membrane, wherein the polymer is one or more selected from rubber, PVC, synthetic wood pulp (SWP), glass fibers, cellulosic fibers, polypropylene, and combinations thereof.

7. The membrane of claim 1 , having an overall thickness of 0.200 mm to 4.0 mm.

8. The membrane of claim 1 , further comprising a material having heavy metal removal capabilities.

9. The membrane of claim 8 , wherein the material is one or more selected from an apatite mineral, a hydroxyapatite mineral, ground fish meal, zeolites, lignins, latex, and rubber-derivatives.

10. The membrane of claim 9 , wherein the material is latex.

11. The membrane of claim 9 , wherein the material is a rubber-derivative.

12. The membrane of claim 1 , further comprising nucleation additives in or on a surface of the membrane.

13. The membrane of claim 12 , wherein the nucleation additives comprise one or more selected from carbon fiber, carbon nanotubes and barium sulfate.

14. The membrane of claim 1 , wherein the polymer is polyethylene and the membrane further comprises a wetting agent.

15. The membrane of claim 14 , wherein the wetting agent is hydrophobic.

16. The membrane of claim 15 , wherein the wetting agent is an ethoxylated fatty alcohol.

17. The membrane of claim 1 , comprising one or more of the following properties:
an average pore size of 0.1 microns;
a maximum pore size <1 microns;
an Electrical Resistance less than 0.065 (Ohm cm sq); and
a porosity of 60% to 80%.

18. The membrane of claim 17 having at least two of the properties.

19. A membrane for an acid-containing battery, the membrane in the shape of a flat sheet, and wherein the membrane comprises polymer, oil, and a filler comprised of silica and fish meal, wherein the filler comprises 50% fish meal, and the silica has a surface area greater than 200 m 2 /g.

20. The membrane of claim 19 , further comprising at least one material having heavy metal removal capabilities selected from the group consisting of an apatite mineral, a hydroxyapatite mineral, ground fish meal, zeolites, lignins, latex, and rubber-derivatives.

Assignees

• Daramic Llc

Inventors

• Whear J Kevin
• Timmons John R
• Chambers Jeffrey K
• Shah Tejas R

Classifications

• H01M50/406

  Moulding; Embossing; Cutting · CPC title

• H01M50/429

  Natural polymers · CPC title

• H01M50/417

  Polyolefins · CPC title

• H01M50/463

  Separators, membranes or diaphragms characterised by their shape · CPC title

• H01M50/44

  Fibrous material · CPC title