Electrochemical cell with adjacent cathodes
AssigneeMedtronic, Inc.
InventorJoseph J. Viavattine
Life of this patent
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Abstract
The disclosure includes an electrochemical cell comprising a first cathode and a second cathodes are adjacent one another in a stacked arrangement to form a cathode stack in the electrochemical cell. The first cathode includes a first current collector and a first cathode form of active material covering the first current collector, and the second cathode includes a second current collector and a second cathode form of active material covering the second current collector. The second current collector is in electrical contact with the first current collector. The electrochemical cell further comprises an anode adjacent to the cathode stack, and a separator located between the cathode stack and the anode.
Claims26
An electrochemical cell comprising:
- a first cathode, wherein the first cathode includes a first current collector and a first cathode form of active material covering the first current collector;
- a second cathode, wherein the second cathode includes a second current collector and a second cathode form of active material covering the second current collector,
- wherein the second current collector is in electrical contact with the first current collector,
- wherein the first and second cathodes are adjacent one another in a stacked arrangement to form a cathode stack in the electrochemical cell;
- an anode adjacent to the cathode stack;
- and
- a separator located between the cathode stack and the anode.
A battery comprising
- a first cathode, wherein the first cathode includes a first current collector and a first cathode form of active material covering the first current collector;
- a second cathode, wherein the second cathode includes a second current collector and a second cathode form of active material covering the second current collector,
- wherein the second current collector is in electrical contact with the first current collector,
- wherein the first and second cathodes are adjacent one another in a stacked arrangement to form a cathode stack in the battery;
- an anode adjacent to the cathode stack;
- a separator located between the cathode stack and the anode;
- electrolyte;
- and
- a battery housing that holds the cathode stack, the anode, the separator, and the electrolyte.
A method of manufacture comprising:
- positioning a first cathode and a second cathode adjacent one another in a stacked arrangement to form a cathode stack,
- wherein the first cathode includes a first current collector and a first cathode form of active material covering the first current collector,
- wherein the second cathode includes a second current collector and a second cathode form of active material covering the second current collector;
- positioning an anode adjacent to the cathode stack with a separator located between the cathode stack and the anode;
- and
- electrically connecting the first current collector and the second current collector.
An implantable medical device comprising:
- a hermetically sealed housing;
- and
- a battery disposed within the housing for powering the implantable medical device, the battery comprising:
- a first cathode, wherein the first cathode includes a first current collector and a first cathode form of active material covering the first current collector;
- a second cathode, wherein the second cathode includes a second current collector and a second cathode form of active material covering the second current collector,
- wherein the second current collector is in electrical contact with the first current collector,
- wherein the first and second cathodes are adjacent one another in a stacked arrangement to form a cathode stack in the battery;
- an anode adjacent to the cathode stack;
- a separator located between the cathode stack and the anode;
- electrolyte;
- and
- a battery housing that holds the cathode stack, the anode, the separator, and the electrolyte.
Dependencies are inferred from the claim text.