MAXIMIZATION OF ACTIVE MATERIAL TO COLLECTOR INTERFACIAL AREA

• US 20090197170A1
• Filed: 01/31/2008
• Published: 08/06/2009
• Est. Priority Date: 01/31/2008
• Status: Abandoned Application

• Current Assignee: Joseph J. Viavattine
• Original Assignee: Joseph J. Viavattine
• Inventors: Viavattine, Joseph J.
• Application Number:
  US12/024,076
• Publication Number:
  US 20090197170A1
• Time in Patent Office: Days
• US Class Current: 429/209
• CPC Class Codes: A61N 1/378 Electrical supply
• CPC Class Codes: H01M 4/70 characterised by shape or form
• CPC Class Codes: H01M 4/72 Grids
• CPC Class Codes: H01M 6/16 with organic electrolyte H01M6/18 takes precedence

Abstract

A current collector for a battery in an implantable medical device is presented. The current collector comprises a conductive layer which includes a first surface and a second surface. A plurality of apertures are formed in the conductive layer such that a surface area of the conductive layer with the plurality of apertures to a surface area without the plurality of apertures is greater than 0.65.

Claims

1. A current collector for a battery in an implantable medical device comprising:

a conductive layer which includes a first surface and a second surface;

a plurality of apertures formed in the conductive layer such that a surface area of the conductive layer with the plurality of apertures to a surface area without the plurality of apertures being greater than 0.65.

2. The current collector of claim 1, wherein a volumetric size of the battery being reduced by about 10%.

3. The current collector of claim 1 wherein the surface area of the conductive layer with the plurality of apertures to a surface area without the plurality of apertures being greater than 0.75.

4. The current collector of claim 1 wherein the surface area of the conductive layer with the plurality of apertures to a surface area without the plurality of apertures being greater than 0.85.

5. The current collector of claim 1 wherein the current collector includes three times an amount of apertures compared to a conventional current collector.

6. The current collector of claim 1 wherein the current collector includes four times an amount of apertures compared to a conventional current collector.

7. A battery for an implantable medical device comprising:

an anode that includes a first set of electrodes, each electrode includes a current collector and anodic active material disposed over the current collector, each current collector comprises a conductive layer which includes a first surface and a second surface, a plurality of apertures formed in the conductive layer such that a surface area of the conductive layer with the plurality of apertures to a surface area without the plurality of apertures being greater than 0.65; and

a cathode that includes a second set of electrode plates, each electrode includes a current collector and cathodic active material disposed over the current collector, each current collector comprises a conductive layer which includes a first surface and a second surface, a plurality of apertures formed in the conductive layer such that a surface area of the conductive layer with the plurality of apertures to a surface area without the plurality of apertures being greater than 0.65.

8. The battery of claim 7, wherein the first and second set of electrode contributes to about a 10% volumetric reduction in the battery.

9. The battery of claim 7 wherein the surface area of the conductive layer with the plurality of apertures to a surface area without the plurality of apertures being greater than 0.75.

10. The battery of claim 7 wherein the surface area of the conductive layer with the plurality of apertures to a surface area without the plurality of apertures being greater than 0.85.

11. The battery of claim 7 wherein the current collector includes three times an amount of apertures compared to a conventional current collector.

12. The battery of claim 7 wherein the current collector includes four times an amount of apertures compared to a conventional current collector.

13. The battery of claim 7, wherein the first and second set of electrode contributes to about a wherein a 10% volumetric reduction in the anode and the cathode.

14. A current collector for an electrochemical cell in an implantable medical device comprising:

a conductive layer which includes a first surface and a second surface;

a plurality of apertures formed in the conductive layer such that a surface area of the conductive layer with the plurality of apertures to a surface area without the plurality of apertures being greater than 0.75,

wherein the plurality of apertures is three times greater than a conventional current collector.

15. A current collector for an electrochemical cell in an implantable medical device comprising:

a conductive layer which includes a first surface and a second surface;

a plurality of apertures formed in the conductive layer such that a surface area of the conductive layer with the plurality of apertures to a surface area without the plurality of apertures being greater than 0.85,

wherein the plurality of apertures is four times greater than a conventional current collector.