Biocompatible wire battery

• US 9,812,730 B2
• Filed: 08/02/2011
• Issued: 11/07/2017
• Est. Priority Date: 08/02/2011
• Status: Active Grant

• Current Assignee: Johnson & Johnson Vision Care Incorporated (Johnson & Johnson)
• Original Assignee: Johnson & Johnson Vision Care Incorporated (Johnson & Johnson)
• Inventors: Otts, Daniel B., Hardy, Katherine Rowan, Pugh, Randall Braxton, Kernick, Edward
• Primary Examiner(s): Essex, Stephan
• Application Number:
  US13/196,210
• Publication Number:
  US 20130034760A1
• Time in Patent Office: 2,289 Days
• Field of Search: 429238, 429233
• CPC Class Codes: H01M 10/04 Construction or manufacture in general H01M10/058, H01M10/12, H01M10/28, H01M10/38 take precedence
• CPC Class Codes: H01M 10/0436 Small-sized flat cells or batteries for portable equipment
• CPC Class Codes: H01M 10/05 Accumulators with non-aqueous electrolyte H01M10/39 takes precedence
• CPC Class Codes: H01M 10/058 Construction or manufacture
• CPC Class Codes: H01M 10/287 Small-sized flat cells or batteries for portable equipment H01M10/283 and H01M10/286 take precedence
• CPC Class Codes: H01M 10/425 Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing printed circuits H05K1/00
• CPC Class Codes: H01M 2220/30 Batteries in portable systems, e.g. mobile phone, laptop
• CPC Class Codes: H01M 4/50 of manganese
• CPC Class Codes: H01M 4/54 of silver
• CPC Class Codes: H01M 4/661 Metal or alloys, e.g. alloy coatings H01M4/669 take precedence
• CPC Class Codes: H01M 4/663 containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres
• CPC Class Codes: H01M 4/668 Composites of electroconductive material and synthetic resins
• CPC Class Codes: H01M 4/75 Wires, rods or strips
• 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
• CPC Class Codes: Y10T 29/49108 Electric battery cell making

Abstract

A rechargeable electrochemical battery in the form of a single or multi-stranded wire assembly may be utilized as a power source for any number of implantable or non-implantable medical devices. As the wire form battery may be scaled to micro size, it may be utilized to power medical devices that were traditionally non-active devices, but which may be enhanced with active components. The wire form battery may be cut to size for a particular application which provides the same open circuit voltage regardless of how the wire is ultimately configured and the length of the wire utilized. Although the battery is in wire form, various arrangements of the components within the battery are also possible.

Claims

1. An electrochemical battery cell comprising:

an anode current collector configured as a wire having a predetermined cross-sectional profile with a thickness of about 25 microns, the anode current collector is the core of the battery cell, wherein the anode current collector is plated with a material that prevents chemical activity;

an anode layer formed and positioned concentrically around at least a portion of the anode current collector, the anode layer having a thickness in the range of 10 to 30 microns and conforming to the anode current collector, the anode layer comprising zinc particles dispersed in a polymeric matrix including a gel forming polymer and a binding polymer, including at least one of poly (ethylene oxide) or poly (vinyl alcohol);

a separator layer formed and positioned concentrically around at least a portion of the anode layer, the separator layer having a thickness of about 20 microns and conforming to the anode layer;

a cathode layer formed and positioned concentrically around at least a portion of the separator layer, the cathode layer having a thickness of about 40 microns and conforming to the separator layer, the cathode layer comprising a cathode coating mixture formed from a powder mixture and solvent including at least one of Ag₂O and MnO₂ in combination with at least one of graphite in an ion permeable polymeric binder or in a water and ion permeable binder, the cathode coating mixture being applied directly on the separator layer;

a cathode current collector formed and positioned concentrically around at least a portion of the cathode layer, the cathode current collector having a thickness in the range of 10 to 20 microns;

an insulation layer formed and positioned concentrically around at least a portion of the cathode current collector, the insulation layer having a thickness of about 5 microns; and

an electrolyte establishing ionic conducting between the anode layer and the cathode layer, wherein the electrochemical battery cell has a length to diameter ratio of greater than 10 to 1.