Absorbent glass mat battery

Patent metadata

Field	Value
Publication number	US-2024222600-A1
Application number	US-202418604333-A
Country	US
Kind code	A1
Filing date	Mar 13, 2024
Priority date	Jun 9, 2017
Publication date	Jul 4, 2024
Grant date	—

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. A negative electrode for a lead-acid battery and a battery having improved performance are also disclosed.

First claim

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 comprising a leady oxide, a plurality of organic expanders, a fine particle barium sulfate, a first plurality of conductive carbons being high surface area conductive carbon, and a second plurality of conductive carbons; and
an absorbent glass mat separator between the positive electrode and 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.

2 . The lead-acid storage battery of claim 1 , wherein the negative active mass further comprises 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 plurality of organic expanders 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 C20 discharge capacity at 25 degrees Celsius ranging from approximately 75 Ah at 1 week to approximately 70 Ah at 18 weeks.

9 . 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.

10 . The lead-acid storage battery of claim 1 , wherein the first plurality of conductive carbons being a thermally prepared high surface area conductive carbon and the second plurality of conductive carbons being a conductive synthetic graphite.

11 . 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.

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

13 . 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.

14 . 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.

15 . 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; and 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 an organic expander, 0.1-0.3 wt % of a high surface area conductive carbon, 0.1-0.3 wt % of a conductive synthetic graphite, 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, with the high surface area conductive carbon and the conductive synthetic graphite each having a surface area between 240 m 2 /g and 1550 m 2 /g.

16 . The negative electrode of claim 15 , wherein the organic expander is a polycondensate of an aromatic sulfone includes at least one of a phenyl sulfone, a naphthalene sulfone, and a benzyl sulfone.

17 . The negative electrode of claim 15 , wherein the high surface area conductive carbon is a thermally prepared high surface area conductive carbon.

18 . A battery having the negative electrode of claim 15 .

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, 0.1 to 0.3 wt % of a plurality of organic expanders, a very fine particle barium sulfate, and a first conductive carbon being a high surface area conductive carbon and a second conductive carbon being a conductive synthetic graphite and each of the first conductive carbon and the second conductive carbon having a surface area between 240 m 2 /g and 1550 m 2 /g; and
an absorbent glass mat separator between the positive electrode and the negative electrode;
an electrolyte within the container; one or more terminal posts extending from the container or the cover and electrically coupled to the one or more cell elements; and wherein the lead-acid storage battery has a dynamic charge acceptance greater than 0.4 A/Ah.

20 . The lead-acid storage battery of claim 19 , wherein the high surface area conductive carbon is a thermally prepared high surface area conductive carbon.

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

• H01M4/625

  Carbon or graphite · CPC title

• H01M50/437

  Glass · CPC title

• H01M50/44

  Fibrous material · CPC title

• H01M4/627

  Expanders for lead-acid accumulators · CPC title