Battery Including Aluminum Components

• US 20090061308A1
• Filed: 11/05/2008
• Published: 03/05/2009
• Est. Priority Date: 11/24/2003
• Status: Active Grant

• Current Assignee: Duracell U.S. Operations, Inc. (Berkshire Hathaway Incorporated)
• Original Assignee: Gillette Company (The Procter & Gamble Company)
• Inventors: Berkowitz, Fred J., Issaev, Nikolai N., Pozin, Michael, Janik, Jaroslav
• Granted Patent: US 8,435,670 B2
• Time in Patent Office: Days
• US Class Current: 429/178
• CPC Class Codes: C22C 21/16 with magnesium
• CPC Class Codes: H01M 2004/028 Positive electrodes
• CPC Class Codes: H01M 4/40 Alloys based on alkali metals
• CPC Class Codes: H01M 4/405 Alloys based on lithium
• CPC Class Codes: H01M 4/661 Metal or alloys, e.g. alloy coatings H01M4/669 take precedence
• CPC Class Codes: H01M 50/107 having curved cross-section, e.g. round or elliptic H01M50/103, H01M50/109, H01M50/11 take precedence
• CPC Class Codes: H01M 50/533 characterised by the shape of the leads or tabs
• CPC Class Codes: H01M 50/534 characterised by the material of the leads or tabs
• CPC Class Codes: H01M 50/536 characterised by the method of fixing the leads to the electrodes, e.g. by welding
• CPC Class Codes: H01M 6/16 with organic electrolyte H01M6/18 takes precedence
• CPC Class Codes: Y10T 29/49108 Electric battery cell making
• CPC Class Codes: Y10T 29/53135 Storage cell or battery

Abstract

A primary lithium battery can include a current collector that includes aluminum, a positive lead that includes aluminum, or both. The aluminum battery components can have high mechanical strength and low electrical resistance.

Claims

1. A primary lithium battery comprising:

a housing;

a negative electrode comprising a lithium-containing anode active material;

a positive electrode comprising iron disulfide and a binder including Kraton;

an aluminum positive electrode current collector;

a separator disposed between the negative electrode and the positive electrode and having a thickness of between 12 microns and 37 microns;

an electrolyte including lithium iodide and lithium hexafluorophosphate dissolved in a solvent including an ether; and

a positive lead including aluminum in contact with the current collector.

2. The battery of claim 1, wherein the positive lead includes a 1000 series aluminum, 2000 series aluminum alloy, a 3000 series aluminum alloy, a 5000 series aluminum alloy, a 6000 series aluminum alloy, or a 7000 series aluminum alloy.

3. The battery of claim 1, wherein the positive lead includes a 5000 series aluminum alloy.

4. The battery of claim 1, wherein the positive lead includes an aluminum alloy including 0-0.4% by weight of chromium.

5. The battery of claim 1, wherein the positive lead includes an aluminum alloy including 0.01-6.8% by weight of copper.

6. The battery of claim 1, wherein the positive lead includes an aluminum alloy including 0.05-1.3% by weight of iron.

7. The battery of claim 1, wherein the positive lead includes an aluminum alloy including 0.1-7% by weight of magnesium.

8. The battery of claim 1, wherein the positive lead includes an aluminum alloy including 0-2% by weight of manganese.

9. The battery of claim 1, wherein the positive lead includes an aluminum alloy including 0-2% by weight of silicon.

10. The battery of claim 1, wherein the positive lead includes an aluminum alloy including less than 0.25% by weight of titanium.

11. The battery of claim 1, wherein the positive lead includes an aluminum alloy including 0-2.3% by weight of nickel.

12. The battery of claim 1, wherein the positive lead includes an aluminum alloy including 0-8.2% by weight of zinc.

13. The battery of claim 1, wherein the current collector includes a 1000 series aluminum, a 2000 series aluminum alloy, a 3000 series aluminum alloy, a 5000 series aluminum alloy, a 6000 series aluminum alloy, or a 7000 series aluminum alloy.

14. The battery of claim 13, wherein the current collector includes a 6000 series aluminum alloy.

15. The battery of claim 13, wherein the current collector includes an aluminum alloy including 0-0.4% by weight of chromium, 0.01-6.8% by weight of copper, 0.05-1.3% by weight of iron, 0.1-7% by weight of magnesium, 0-2% by weight of manganese, 0-2% by weight of silicon, less than 0.25% by weight of titanium, 0-2.3% by weight of nickel, and 0-8.2% by weight of zinc.

16. The battery of claim 1, wherein the positive lead includes an extension directed toward the positive electrode.

17. The battery of claim 1, wherein the positive lead includes four or more extensions directed toward the positive electrode.

18. The battery of claim 1, wherein the positive lead includes six or more extensions directed toward the positive electrode.

19. The battery of claim 1, wherein the housing is cylindrical.

20. The battery of claim 1, wherein the battery has an impedance that increases by less than 0.20 Ohms after the batty is dropped six times from a height of one meter onto a hard surface.

21. The battery of claim 1, wherein the positive lead is welded to the current collector.

22. The battery of claim 1, wherein the electrolyte includes a third lithium salt.