Battery terminal

Patent metadata

Field	Value
Publication number	US-10811667-B2
Application number	US-201916293364-A
Country	US
Kind code	B2
Filing date	Mar 5, 2019
Priority date	Mar 5, 2018
Publication date	Oct 20, 2020
Grant date	Oct 20, 2020

Abstract

Disclosed is a battery having a conductive terminal extending beyond a surface of a battery cover, the conductive terminal having an internal portion and an external surface, wherein the internal portion comprises lead and external surface comprises a non-lead conductive material. Further disclosed is a method for producing such a battery.

First claim

The invention claimed is:

1. A battery having a battery housing and a positive and negative terminal, the positive and negative terminal being accessible through the battery housing; wherein the positive and negative terminal further comprise a lead-free conductive surface on both the positive and negative terminal, wherein the lead-free conductive surface is a coating provided on the sides of a bushing, the bushing comprising lead.

2. The battery of claim 1 , wherein a top surface of the positive battery terminal and negative battery terminal comprises a conductive coating.

3. The battery of claim 1 , wherein the lead-free conductive surface is selected from a group comprising tin, zinc, brass, copper, stainless steel, nickel, and alloys thereof.

4. The battery of claim 1 , wherein the lead-free conductive surface is an arc-sprayed conductive surface comprising zinc or tin.

5. The battery of claim 1 , wherein the positive terminal or negative terminal comprises a bushing having a concave depression.

6. A battery having a conductive terminal extending beyond a surface of a battery cover, the conductive terminal having an internal portion comprising a bushing and an external surface, wherein the internal portion comprises lead and external surface comprises a lead-free conductive coating provided on the sides of the bushing.

7. The battery of claim 6 , wherein the lead-free conductive coating is selected from a group comprising zinc, tin, brass, copper, stainless steel, nickel, and alloys thereof.

8. The battery of claim 6 , wherein the surface is an arc-sprayed surface.

9. The battery of claim 8 , wherein the arc-sprayed surface comprises zinc or tin.

10. A method for producing a battery having a lead-free conductive surface comprising coating a battery terminal with a lead-free coating, wherein the lead-free conductive surface is a coating provided on the sides of a bushing, the bushing comprising lead.

11. The method of claim 10 wherein coating a battery terminal with a lead-free coating further comprises providing the bushing into a battery housing.

12. The method of claim 11 further comprising: sealing an exposed top surface of the battery terminal using a further lead-free coating.

13. The method of claim 10 wherein coating a battery terminal with a lead-free coating is performed using an arc-sprayed process after post welding.

14. The method of claim 10 wherein coating a battery terminal with a lead-free coating is performed after battery formation.

15. The battery of claim 1 , wherein the positive and negative terminal have no exposed lead.

16. The battery of claim 6 , wherein the conductive terminal comprises no exposed lead.

Assignees

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

Inventors

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

Classifications

• 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

• 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