US 5,434,017 AGranted

Isolated connection for an electrochemical cell

AssigneeMedtronic, Inc.

InventorsFred J. Berkowitz, William G. Howard

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Abstract

An isolated, multipoint connection for a coiled electrode electrochemical cell which includes a cathode assembly with a cathode current collector having at least two connector tabs spaced apart on an edge of the current collector and an anode assembly having at least two connector tabs spaced apart on the edge of the anode assembly. Three barriers of nonconductive material are established to isolate the various components; a first nonconductive barrier which isolates the connector tabs from the remainder of the winding; a second nonconductive barrier which isolates the feedthrough and feedthrough pin from the case and from the anode elements; and a third nonconductive barrier established to separate the connections to the cathode connector tabs from the anode elements and from the case.

Claims24

Dependent claims

An isolated, multipoint connection for a coiled electrode electrochemical cell comprising:

(a) a case;
(b) a feedthrough extending through an aperture in the case, the feedthrough having a seal and a pin extending through the seal;
(c) a cathode assembly having at least two connector tabs spaced apart on an edge of the cathode assembly;
(d) an anode assembly having at least one connector tab on the edge of the anode assembly;
the anode and cathode wound together with the cathode connector tabs aligned on a first side of the winding and the anode connector tab on a second side of the winding, the cathode connector tabs connected to the feedthrough pin and the anode connector tab connected to the case;
(e) a first nonconductive barrier which isolates the connector tabs from the winding by having each of the connector tabs project through the barrier by means of individual apertures through the barrier;
(d) a second nonconductive barrier which isolates the feedthrough and feedthrough pin from the case and from the anode connector tab;
and
(e) a third nonconductive barrier which isolates the connections between the feedthrough pin and the cathode connector tabs from the anode connector tab and from the case.

6 more elements

Dependencies are inferred from the claim text.