Systems and methods to connect sintered aluminum electrodes of an energy storage device

• US 8,873,220 B2
• Filed: 12/15/2010
• Issued: 10/28/2014
• Est. Priority Date: 12/18/2009
• Status: Active Grant

• Current Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Original Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Inventors: Sherwood, Gregory J., Root, Michael J., Daley, Jay E., Stemen, Eric
• Primary Examiner(s): Gandhi, Jayprakash N
• Assistant Examiner(s): FERGUSON, DION
• Application Number:
  US12/968,571
• Publication Number:
  US 20110149474A1
• Time in Patent Office: 1,413 Days
• Field of Search: 361/503, 361/522, 361/541, 361/306.1, 361/328
• US Class Current: 361/503
• CPC Class Codes: A61N 1/37512 Pacemakers
• CPC Class Codes: A61N 1/3756 Casings with electrodes thereon, e.g. leadless stimulators
• CPC Class Codes: A61N 1/378 Electrical supply
• CPC Class Codes: A61N 1/3782 producing a voltage above the power source level
• CPC Class Codes: H01G 9/008 Terminals
• CPC Class Codes: H01G 9/012 specially adapted for solid capacitors
• CPC Class Codes: H01G 9/02 Diaphragms; Separators
• CPC Class Codes: H01G 9/052 Sintered electrodes
• CPC Class Codes: H01G 9/08 Housing; Encapsulation
• CPC Class Codes: H01G 9/14 Structural combinations or circuits for modifying, or compensating for, electric characteristics of electrolytic capacitors
• CPC Class Codes: H01G 9/15 Solid electrolytic capacitors H01G11/00 takes precedence

Abstract

This document provides an apparatus including a sintered electrode, a second electrode and a separator material arranged in a capacitive stack. A conductive interconnect couples the sintered electrode and the second electrode. Embodiments include a clip interconnect. In some embodiments, the interconnect includes a comb-shaped connector. In some embodiments, the interconnect includes a wire snaked between adjacent sintered substrates.

Claims

1. An apparatus comprising:

an electrode;

a separator stacked in alignment with the electrode;

a first electrode assembly disposed in a stack with the electrode and the separator, the separator disposed between the electrode and the first electrode assembly to physically separate the electrode and the first electrode assembly,

wherein the first electrode assembly includes;

a first layer including a first conductive material deposited on a first substrate, the first substrate having a first substrate flexibility greater than a first material flexibility of the first material; and

a second layer stacked with the first layer, the second layer including a second conductive material deposited on a second substrate, the second substrate having a second substrate flexibility greater than a second material flexibility of the second material; and

an interconnect coupled to the first substrate and the second substrate to physically and electrically couple the first layer and the second layer of the stack,

wherein the first substrate of the first layer and the second substrate of the second layer are proximate each other and between the first material and the second material,

wherein the interconnect includes a conductive element disposed between the first substrate and the second substrate,

where at least one of the first layer and the second layer includes a notch configured to expose the conductive element disposed between the first substrate and the second substrate.

2. The apparatus of claim 1, wherein the first layer includes a first tab extending from a first location along a perimeter of the first layer.

3. The apparatus of claim 2, wherein the second layer includes a second tab extending from a second location, other than the first location, along the perimeter of the first layer.

4. The apparatus of claim 2, wherein the second layer includes a second tab extending from the first location along a perimeter of the second layer, and wherein the first tab is coupled to the second tab using the interconnect.

5. The apparatus of claim 4, including a weld to couple the first tab with the second tab.

6. The apparatus of claim 4, wherein the interconnect includes a clip.

7. The apparatus of claim 4, wherein the interconnect includes a comb interconnect.

8. The apparatus of claim 7, wherein the first tab and the second tab are coupled together in a single slot of the comb interconnect.

9. The apparatus of claim 7, wherein the first tab and second tab are coupled together using separate slots of the comb interconnect.

10. The apparatus of claim 1, wherein the first material and the second material includes sintered material, and

wherein the first substrate and the second substrate include sintered material on only one major surface of each respective substrate.

11. The apparatus of claim 1, wherein the first substrate and the second substrate are substantially sinter-free along a path of the conductive element.