Lead-acid battery having fiber electrode with lead-calcium strap

Patent metadata

Field	Value
Publication number	US-2022393181-A1
Application number	US-202017761939-A
Country	US
Kind code	A1
Filing date	Sep 18, 2020
Priority date	Sep 20, 2019
Publication date	Dec 8, 2022
Grant date	—

Abstract

A lead-acid battery is disclosed. The battery comprises a container with a cover having one or more compartments. One or more cell elements are provided in the one or more compartments. The cell elements comprise a positive electrode and a negative electrode. The positive electrode has a positive current collector and a positive electrochemically active material in contact therewith. The negative electrode has a negative current collector and a negative electrochemically active material in contact therewith. At least one of the positive electrode or the negative electrode comprises a cured carbon or carbonized fiber mat current collector impregnated with the respective electrochemically active material. The cured carbon or carbonized fiber mat current collector comprises a frame member composed of a lead-calcium alloy. Electrolyte is provided within the container. One or more terminal posts extend from the container or the cover and are electrically coupled to the cell elements.

First claim

1 . A lead-acid battery comprising:
a container with a cover, the container having one or more compartments; one or more cell elements are provided in the one or more compartments, the one or more cell elements comprising a positive electrode and a negative electrode, the positive electrode having a positive substrate or current collector and a positive electrochemically active material in contact with the positive substrate or current collector, the negative electrode having a negative substrate or current collector and a negative electrochemically active material in contact with the negative substrate or current collector; wherein at least one of the positive electrode or the negative electrode comprises a cured carbon or carbonized fiber mat current collector impregnated with said respective electrochemically active material, the cured carbon or carbonized fiber mat current collector comprising a frame member composed of a lead-calcium alloy; electrolyte provided 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.

2 . The lead-acid battery of claim 1 , wherein the frame member is a lead-calcium-tin alloy.

3 . The lead-acid battery of claim 1 , wherein the frame member comprises a strap bonded to the cured carbon or carbonized fiber mat.

4 . The lead-acid battery of claim 3 , wherein the frame member comprises a lug.

5 . The lead-acid battery of claim 1 , wherein at least one of the positive electrode or the negative electrode is a grid composed of a lead material.

6 . The lead-acid battery of claim 1 , wherein the one or more cell elements further comprise a separator.

7 . The lead-acid battery of claim 6 , wherein the separator is an absorbent glass mat.

8 . The lead-acid battery of claim 1 , wherein the positive electrochemically active material or the negative electrochemically active material further comprises an additive.

9 . An electrode for a lead acid battery comprising:
a cured carbon or carbonized fiber mat current collector impregnated with an electrochemically active material, and a frame member composed of a lead-calcium alloy.

10 . The electrode of claim 9 , wherein the frame member comprises a strap bonded to the cured carbon or carbonized fiber mat.

11 . The electrode of claim 10 , wherein the frame member comprises a lug.

12 . The electrode of claim 9 , wherein the electrode is a negative electrode.

13 . The electrode of claim 9 , wherein the electrode is a positive electrode.

14 . The electrode of claim 9 , wherein the frame member is a lead-calcium-tin alloy.

15 . A battery comprising the electrode of claim 9 .

16 . A current collector comprising:
a cured carbon or carbonized fiber mat, the cured carbon or carbonized fiber mat current collector comprising a frame member composed of a lead-calcium alloy.

17 . The current collector of claim 16 , wherein the frame member comprises a strap bonded to the cured carbon or carbonized fiber mat.

18 . The current collector of claim 17 , wherein the frame member comprises a lug.

19 . The current collector of claim 16 , wherein the frame member is a lead-calcium-tin alloy.

20 . A battery having the current collector of claim 16 .

Assignees

• Cps Tech Holdings Llc

Inventors

• Troxel Jeffrey L
• Korinek Paul D

Classifications

• H01M10/06

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

• H01M4/68 Primary

  for use in lead-acid accumulators · CPC title

• H01M50/431

  Inorganic material · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M4/16

  Processes of manufacture · CPC title