Battery terminal

Patent metadata

Field	Value
Publication number	US-12469939-B2
Application number	US-202318117282-A
Country	US
Kind code	B2
Filing date	Mar 3, 2023
Priority date	Mar 5, 2018
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

Disclosed is a lead acid battery including a housing having an exterior. The battery also includes a lead terminal extending through the housing to the exterior of the housing. A coating covers the lead terminal such that there is no exposed lead exterior to the housing.

First claim

The invention claimed is:

1 . A lead acid battery comprising:
a housing having an exterior; a lead terminal extending through a surface of the housing to the exterior of the housing; and a coating covering the lead terminal, the coating comprising a lead-free conductive film.

2 . The lead acid battery of claim 1 , wherein a thickness of the coating is less than 1 mm.

3 . The lead acid battery of claim 1 , wherein the coating extends below the surface of the housing.

4 . The lead acid battery of claim 1 , wherein the coating comprises a non-lead surface.

5 . The lead acid battery of claim 1 , wherein the coating includes an arc-sprayed conductive coating comprising zinc or tin.

6 . The lead acid battery of claim 1 , wherein the coating comprises a metal powder coat.

7 . The lead acid battery of claim 1 , wherein the coating comprises an electrically-conductive paint.

8 . The lead acid battery of claim 1 , wherein the coating comprises a conductive portion and a non-conductive portion.

9 . The lead acid battery of claim 8 , wherein the conductive portion of the coating is selected from the group consisting of tin, zinc, brass, copper, stainless steel, nickel, and alloys thereof.

10 . The lead acid battery of claim 8 , wherein the non-conductive portion of the coating comprises a sealant.

11 . The lead acid battery of claim 10 , wherein the sealant is selected from the group consisting of epoxy resin and polymer.

12 . The lead acid battery of claim 8 , wherein the lead terminal comprises a depression on a surface thereof, and wherein the non-conductive portion of the coating is provided on the depression.

13 . The lead acid battery of claim 8 , wherein the conductive portion of the coating is provided on a side of the lead terminal.

14 . The lead acid battery of claim 1 , wherein the lead terminal is a positive terminal, wherein the lead acid battery further comprises a negative terminal.

15 . The lead acid battery of claim 14 , wherein the positive terminal includes a first coating, and the negative terminal includes a second coating.

16 . The lead acid battery of claim 15 , wherein the first and second coatings are different materials.

17 . The lead acid battery of claim 1 , further comprising a battery element and a strap, wherein the battery element is coupled to an end of the strap.

18 . The lead acid battery of claim 17 , further comprising a post of the lead terminal, wherein the strap leads to the post.

19 . The lead acid battery of claim 18 , further comprising a bushing provided within the housing, wherein the post of the lead terminal extends through the bushing.

Assignees

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

Inventors

• Koop Michael J
• Caldwell Donald J
• Fuhr Jason D
• Troxel Jeffrey L

Classifications

• H01M50/561

  Hollow metallic terminals, e.g. terminal bushings · CPC title

• H01M10/06 Primary

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

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M50/571 Primary

  Methods or arrangements for affording protection against corrosion; Selection of materials therefor · CPC title