Absorbent glass mat battery

Patent metadata

Field	Value
Publication number	US-11936032-B2
Application number	US-201916553994-A
Country	US
Kind code	B2
Filing date	Aug 28, 2019
Priority date	Jun 9, 2017
Publication date	Mar 19, 2024
Grant date	Mar 19, 2024

Abstract

A lead-acid battery is disclosed. The lead-acid battery has a container with a cover and includes one or more compartments. One or more cell elements are provided in the one or more compartments. The one or more cell elements comprise a positive electrode, the positive electrode having a positive substrate and a positive electrochemically active material on the positive substrate; a negative electrode, the negative electrode having a negative substrate and a negative active mass on the negative substrate, wherein the negative active mass comprises a leady oxide, a synthetic organic expander, a very fine particle barium sulfate, and plurality of conductive carbons; and an absorbent glass mat separator between the positive plate and the negative plate. Electrolyte is provided within the container. One or more terminal posts extend from the container or the cover and are electrically coupled to the one or more cell elements. A negative electrode for a lead-acid battery and a battery having improved performance are also disclosed.

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 electrode, the positive electrode having a positive substrate and a positive electrochemically active material on the positive substrate;
a negative electrode, the negative electrode having a negative substrate and a negative active mass on the negative substrate, with the negative active mass having a composition with a normalized CO 2 savings of greater than 2 g CO 2 /km, the composition comprises a leady oxide, a natural organic expander material and a synthetic organic expander material, a fine particle barium sulfate, and a plurality of conductive carbons, with the plurality of conductive carbons including a first plurality of conductive carbons being activated carbon and a second plurality of conductive carbons being graphite and each of the plurality of conductive carbons having a surface area between 100 m 2 /g and 200 m 2 /g;
an absorbent glass mat separator between the positive electrode and the negative electrode; and
the natural organic expander material and the synthetic organic expander material comprising surface active molecules to provide for reduced deposition of a lead as a non-porous layer proximate to the negative electrode;

an 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, wherein the battery has a dynamic charge acceptance greater than 0.6 A/Ah.

2. The lead-acid storage battery of claim 1 , wherein the negative active mass comprises 0.1-0.3 wt % of the synthetic organic expander material, 0.1-0.3 wt % of the first plurality of conductive carbons, 0.1-0.3 wt % of the second plurality of conductive carbons, and 0.5-1.5 wt % of the-fine particle barium sulfate, wt % being an amount relative to the leady oxide used in the negative active mass.

3. The lead-acid storage battery of claim 1 , wherein the electrolyte comprises a sulfuric acid solution including at least one metal sulfate, wherein the at least one metal sulfate is a soluble metal sulfate selected from a 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 active mass has a bimodal particle size distribution of oxide.

5. The lead-acid storage battery of claim 1 , wherein the synthetic organic expander material being a polycondensate of an aromatic sulfone includes at least one of a phenyl sulfone, a naphthalene sulfone, and a benzyl sulfone.

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

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 battery has a resistance increase of approximately 15 percent over 8000 battery cycles.

9. The lead-acid storage battery of claim 1 , wherein the battery has a C20 discharge capacity at 25 degrees Celsius ranging from approximately 75 Ah at 1 week to approximately 70 Ah at 18 weeks.

10. The lead-acid storage battery of claim 1 , wherein the battery has a charge acceptance which comprises:
at 90 percent state of charge, a range of approximately 200 A at 1 seconds to approximately 70-80 A at 60 seconds;
at 80 percent state of charge, a range of approximately 200 A at 1 seconds to approximately 120-130 A at 60 seconds;
at 70 percent state of charge, a range of approximately 200 A at 1 seconds to approximately 160 to 170 A at 60 seconds; and
at 60 percent state of charge, a range of approximately 200 A at 1 seconds to approximately 190 to 200 A at 60 seconds.

11. The lead-acid storage battery of claim 1 , wherein the battery has the dynamic charge acceptance greater than 0.7 A/Ah.

12. The lead-acid storage battery of claim 1 , wherein the battery has a charge acceptance of approximately 0.02 Ah/s, a normalized recuperation time of approximately 220 seconds, and a normalized charged Ah of approximately 5.

13. The lead-acid storage battery of claim 1 , wherein the battery delivers approximately 2.2 g/km CO 2 reduction.

14. The lead-acid storage battery of claim 1 , wherein the battery comprises a dynamic charge acceptance which is at least greater than two times an industry average of approximately 0.22 A/Ah.

15. The lead-acid storage battery of claim 1 , wherein the battery comprises an endurance, a high charge acceptance, a high current performance, and a high capacity.

16. A negative electrode for a lead-acid battery, the negative electrode comprising:
a negative current collector and a negative electrochemically active material on the negative current collector;
the negative electrochemically active material, having a composition with a normalized CO 2 savings of greater than 2 g CO 2 /km, the composition comprises a leady oxide, 0.1-0.3 wt % of a synthetic organic material, 0.1-0.3 wt % of a first conductive carbon, 0.1-0.3 wt % of a second conductive carbon, and 0.5-1.5 wt % of a fine particle barium sulfate, wt % being an amount relative to dry leady oxide used in the negative electrochemically active material;
the first conductive carbon being activated carbon and the second conductive carbon being graphite and each having a surface area between 100 m 2 /g and 200 m 2 /g; and
the synthetic organic material comprising surface active molecules to provide for reduced deposition of a lead as a non-porous layer proximate to the negative electrode.

17. The negative electrode of claim 16 , wherein the synthetic organic material is a polycondensate of an aromatic sulfone includes at least one of a phenyl sulfone, a naphthalene sulfone, and a benzyl sulfone.

18. A battery having the negative electrode of claim 16 .

19. 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 electrode, the positive electrode having a positive substrate and a positive electrochemically active material on the positive substrate;
a negative electrode, the negative electrode having a negative substrate and a negative active mass on the negative substrate, with the negative active mass having a composition with a normalized CO 2 savings of greater than 2 g CO 2 /km, the composition comprises a leady oxide, at least one of a natural organic expander material and a synthetic organic expander material, a very fine particle barium sulfate, wherein the very fine particle comprises a range of from less than 0.1 μm to approximately 1 μm, and a first conductive carbon being activated carbon and a second conductive carbon being graphite and each of the first conductive carbon and the second conductive carbon having a surface area between 100 m 2 /g and 200 m 2 /g;
an absorbent glass mat separator between the positive electrode and the negative electrode; and
the natural organic expander material and the synthetic organic expander material comprising surface active molecules to provide for reduced deposition of a lead as a non-porous layer proximate to the negative electrode;

an electrolyte within the container;
one or more terminal posts extending from the container or the cover

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

• H01M4/62

  Selection of inactive substances as ingredients for active masses, e.g. binders, fillers · CPC title

• H01M4/366

  as layered products · CPC title

• H01M10/052

  Li-accumulators · CPC title

• H01M4/364

  as mixtures · CPC title

• H01M10/06

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