Absorbent glass mat battery

Patent metadata

Field	Value
Publication number	US-2020052286-A1
Application number	US-201916553994-A
Country	US
Kind code	A1
Filing date	Aug 28, 2019
Priority date	Jun 9, 2017
Publication date	Feb 13, 2020
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. 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

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, wherein the negative active mass comprises a leady oxide, an organic expander, a very fine particle barium sulfate, and plurality of conductive carbons; and
an absorbent glass mat separator between the positive electrode and the negative electrode;
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 comprises 0.1-0.3 wt % of a synthetic organic expander 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 the very fine particle barium sulfate, wt % being an amount relative to the dry 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 one or more metal sulfates, wherein the metal sulfates are soluble metal sulfates selected from the group consisting of the elements Al, Mg, Na, K, Li, and Zn.

4 . The lead-acid storage battery of claim 1 , wherein at least one of the positive active mass 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 is a polycondensate of an aromatic sulfone.

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 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; 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 a dynamic charge acceptance greater than 0.6 A/Ah.

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

13 . The lead-acid storage battery of claim 1 , wherein the battery has a recuperation (Amp Hour/s) of between 0.020-0.025.

14 . 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, a normalized charged Ah of approximately 5, and a normalized CO2 savings of greater than 2 CO 2 /km.

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

16 . 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.

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

18 . 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; wherein the negative electrochemically active material 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 very fine particle barium sulfate, wt % being an amount relative to the dry leady oxide used in the negative active material.

19 . The negative electrode of claim 18 , wherein the synthetic organic is a polycondensate of an aromatic sulfone.

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

Assignees

• Cps Tech Holdings Llc
• Johnson Controls Autobatterie Gmbh & Co Kgaa

Inventors

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

Classifications

• H01M4/627

  Expanders for lead-acid accumulators · CPC title

• H01M10/08

  Selection of materials as electrolytes · CPC title

• H01M4/56

  of lead · CPC title

• H01M2004/027

  Negative electrodes · CPC title

• H01M4/14 Primary

  Electrodes for lead-acid accumulators · CPC title