Absorbent glass mat battery

Patent metadata

Field	Value
Publication number	US-11870096-B2
Application number	US-202217882035-A
Country	US
Kind code	B2
Filing date	Aug 5, 2022
Priority date	Jun 9, 2017
Publication date	Jan 9, 2024
Grant date	Jan 9, 2024

Abstract

A lead-acid battery is disclosed. The lead-acid storage battery has a container with a cover, the container including one or more compartments. One or more cell elements are provided in the one or more compartments. The one or more cell elements include a positive plate, the positive plate having a positive grid and a positive electrochemically active material on the positive grid; a negative plate, the negative plate having a negative grid and a negative electrochemically active material on the negative grid, wherein the negative electrochemically active material comprises barium sulfate and an organic expander; and a separator between the positive plate and the negative plate. Electrolyte is provided within the container. One or more terminal posts extend, from the cover and are electrically coupled to the one or more cell elements.

First claim

The invention claimed is:

1. A lead-acid storage battery comprising:
a container with a cover, the container including one or more compartments;
one or more cell elements in the one or more compartments, the one or more cell elements comprising:
a positive plate, the positive plate having a positive grid and a positive electrochemically active material on the positive grid;
a negative plate, the negative plate having a negative grid and a negative electrochemically active material on the negative grid, wherein the negative electrochemically active material comprises fine particle size barium sulfate, an organic expander, and conductive carbon, the conductive carbon comprising activated carbon and 0.01 to 0.1 percent by weight carbon nanotubes; and
an absorbent glass mat separator between the positive plate and the negative plate;

electrolyte within the container; and
one or more terminal posts extending from the container or the cover and electrically coupled to the one or more cell elements.

2. The lead-acid storage battery of claim 1 , wherein the negative electrochemically active material further comprises one or more carbons are selected from the group consisting of high surface area conductive carbon black, natural or synthetic graphite, and graphene.

3. The lead-acid storage battery of claim 1 , wherein the electrolyte comprises a sulfuric acid solution including one or more metal sulfates, wherein the metal sulfates are soluble metal sulfates selected from the group consisting of elements Al Mg, Na, K, Li, and Zn.

4. The lead-acid storage battery of claim 1 , wherein at least one of the positive electrochemically active material and the negative electrochemically active material has a bimodal particle size distribution of oxide.

5. The lead-acid storage battery of claim 1 , wherein the organic expander is a naphthalene sulfonate.

6. The lead-acid storage battery of claim 1 , further comprising an additional separator between the positive plate and the negative plate.

7. The lead-acid storage battery of claim 1 , further comprising a pasting paper.

8. The lead-acid storage battery of claim 1 , wherein the organic expander is a wood chemical.

9. A lead-acid storage battery comprising:
a container with a cover, the container including one or more compartments;
one or more cell elements in the one or more compartments, the one or more cell elements comprising:
a positive plate, the positive plate having a positive grid and a positive electrochemically active material on the positive grid;
a negative plate, the negative plate having a negative grid and a negative electrochemically active material on the negative grid, wherein the negative electrochemically active material comprises fine particle size barium sulfate, an organic expander, and conductive carbon, the conductive carbon comprising activated carbon and 0.01 to 0.1 percent by weight carbon nanotubes; and
a separator between the positive plate and the negative plate;

electrolyte within the container; and
one or more terminal posts extending from the container or the cover and electrically coupled to the one or more cell elements.

10. The lead-acid storage battery of claim 9 , wherein the negative electrochemically active material further comprises one or more carbons are selected from the group consisting of high surface area conductive carbon black, natural or synthetic graphite, and graphene.

11. The lead-acid storage battery of claim 9 , wherein the electrolyte comprises a sulfuric acid solution including one or more metal sulfates, wherein the metal sulfates are soluble metal sulfates selected from the group consisting of elements Al, Mg, Na, K, Li, and Zn.

12. The lead-acid storage battery of claim 9 , wherein at least one of the positive electrochemically active material and the negative electrochemically active material has a bimodal particle size distribution of oxide.

13. The lead-acid storage battery of claim 9 , wherein the organic expander is a wood chemical.

14. The lead-acid storage battery of claim 9 , wherein the organic expander is a naphthalene sulfonate.

15. The lead-acid storage battery of claim 9 , further comprising an additional separator between the positive plate and the negative plate.

16. The lead-acid storage battery of claim 9 , further comprising a pasting paper.

17. A lead-acid storage battery comprising:
a container with a cover, the container including one or more compartments;
one or more cell elements in the one or more compartments, the one or more cell elements comprising:
a positive plate, the positive plate having a positive grid and a positive electrochemically active material on the positive grid;
a negative plate, the negative plate having a negative grid and a negative electrochemically active material on the negative grid;
wherein the negative electrochemically active material comprises one or more carbons, fine particle size barium sulfate, and one or more organic expanders, wherein the one or more carbons are activated carbon and 0.01 to 0.1 percent by weight carbon nanotubes; and
an absorbent glass mat separator between the positive plate and the negative plate;

electrolyte within the container, wherein the electrolyte comprises a sulfuric acid solution including one or more metal sulfates, wherein the metal sulfates are soluble metal sulfates selected from the group consisting of elements Al, Mg, Na, K, Li, and Zn; and
one or more terminal posts extending from the container or the cover and electrically coupled to the one or more cell elements.

18. The lead-acid storage battery of claim 17 , wherein the one or more carbons are selected from the group consisting of high surface area conductive carbon black, natural or synthetic graphite, and graphene.

19. The lead-acid storage battery of claim 17 , wherein at least one of the positive electrochemically active material and the negative electrochemically active material has a bimodal particle size distribution of oxide.

20. The lead-acid storage battery of claim 17 , wherein the one or more organic expanders are a naphthalene sultanate.

Assignees

• Cps Tech Holdings Llc
• Clarios Germany Gmbh & Co Kg

Inventors

• Johns Frank-Thomas
• Bitomsky Uwe
• Dudenbostel Andreas
• Spence Matthew A
• Loganathan Kavi G
• Shi Qingfang
• Brendel Cornelia

Classifications

• H01M50/44 Primary

  Fibrous material · CPC title

• H01M4/14 Primary

  Electrodes for lead-acid accumulators · CPC title

• H01M4/5825

  Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines · CPC title

• H01M4/625

  Carbon or graphite · CPC title

• H01M4/627

  Expanders for lead-acid accumulators · CPC title