BATTERIES INCLUDING A FLAT PLATE DESIGN

• US 20100203380A1
• Filed: 04/21/2010
• Published: 08/12/2010
• Est. Priority Date: 12/31/2002
• Status: Active Grant

• Current Assignee: Barr A. Gordon, Benjamin J. Haasl, Lawrence D. Swanson, Michael J O'Phelan, Reilly M. Dillon, Richard J. Kavanagh, Tom G. Victor
• Original Assignee: Barr A. Gordon, Benjamin J. Haasl, Lawrence D. Swanson, Michael J O'Phelan, Reilly M. Dillon, Richard J. Kavanagh, Tom G. Victor
• Inventors: Dillon, Reilly M., O'Phelan, Michael J., Victor, Tom G., Barr, A. Gordon, Kavanagh, Richard J., Haasl, Benjamin J., Swanson, Lawrence D.
• Granted Patent: US 9,620,806 B2
• Time in Patent Office: Days
• US Class Current: 429/178
• CPC Class Codes: H01M 10/0404 Machines for assembling batteries
• CPC Class Codes: H01M 2220/00 Batteries for particular applications
• 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 6/005 Devices for making primary cells
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

A battery having flat, stacked, anode and cathode layers. The battery can be adapted to fit within an implantable medical device.

Claims

1. A battery comprising:

a housing having a wall which includes an integrally formed annular structure defining a feedthrough hole, the integrally formed annular structure including an inward facing cylindrical surface;

an electrode assembly located within the housing and including an anode and a cathode;

a feedthrough post extending through the feedthrough hole; and

an electrically insulating member having an outer surface abutting the inward facing cylindrical surface, the electrically insulating member having an inner hole, wherein the feedthrough post extends through the inner hole and has one end connected to a portion of the electrode assembly and a second end exposed externally to the housing.

2. The battery of claim 1, wherein the housing includes a base portion and a lid portion and the feedthrough hole is within the lid portion.

3. The battery of claim 1, wherein the electrode assembly includes a plurality of anode sub-assemblies and cathode sub-assemblies arranged in a layered stack.

4. The battery of claim 1, wherein the electrically insulating member includes a glass member.

5. The battery of claim 1, wherein the integrally formed annular structure defines an integral ferrule formed in a lid of the housing.

6. The battery of claim 1, wherein the electrically insulating member is a cylindrical member.

7. The battery of claim 1, wherein the electrically insulating member includes a glass member.

8. The battery of claim 1, wherein the electrically insulating member includes an epoxy member or a ceramic member.

9. The battery of claim 1, wherein electrically insulating member is adapted to provide a hermetic seal of the battery.

10. The battery of claim 1, wherein the feedthrough post has the one end connected to a cathode tab of the electrode assembly and the second end exposed externally to the housing to provide a cathode terminal for the battery.

11. The battery of claim 1, wherein the cathode includes an MnO₂ cathode and wherein the housing has a volume of approximately 9.0 cm³ or less, and wherein the battery is configured to have a power of approximately 2 to 5 amps and a capacity of approximately 2.0 amp-hours or greater.

12. The battery of claim 11, wherein the anode includes lithium.

13. The battery of claim 12, wherein the ratio of lithium to MnO₂ is approximately 1.27.

14. A battery having a power of approximately 2 to 5 amps and a capacity of approximately 2.0 amp-hours or greater, the battery comprising:

an electrode assembly including an MnO₂ cathode and an anode opposing the MnO₂ cathode;

a battery case holding the MnO₂ cathode and the anode, the battery case having a wall which includes an integrally formed annular structure defining a feedthrough hole, the integrally formed annular structure including an inward facing cylindrical surface, wherein the battery case has a volume of approximately 9.0 cm³ or less;

a feedthrough post extending through the feedthrough hole; and

an electrically insulating member having an outer surface abutting the inward facing cylindrical surface, the electrically insulating member having an inner hole, wherein the feedthrough post extends through the inner hole and has one end connected to a portion of the electrode assembly and a second end exposed externally to the housing.

15. The battery of claim 14, wherein the battery case has a volume of approximately 8.64 cm³.

16. The battery of claim 14, wherein the battery case has a volume between approximately 8.0 cm³ and 9.0 cm³.

17. The battery of claim 14, wherein the battery case has a volume between approximately 8.5 cm³ and 9.0 cm³.

18. The battery of claim 14, wherein the anode includes lithium.

19. The battery of claim 18, wherein the ratio of lithium to MnO2 is approximately 1.27.

20. The battery of claim 14, wherein the battery includes a plurality of alternating discrete anode and cathode layers formed into a stacked structure.