Printing electrochemical cells with in-line cured electrolyte

• US 6,395,043 B1
• Filed: 11/23/1999
• Issued: 05/28/2002
• Est. Priority Date: 11/25/1998
• Status: Expired due to Fees

• Current Assignee: Wisconsin Label Corporation (Multi-Color Corporation)
• Original Assignee: Timer Technologies, LLC
• Inventors: Friesch, Andrew J., Mitchell, Chauncey T. Jr., Verschuur, Gerrit L., Shadle, Mark A., Good, David M.
• Primary Examiner(s): Maples, John S.
• Application Number:
  US09/448,371
• Time in Patent Office: 917 Days
• Field of Search: 429/124,162 29/623.3,623.4
• US Class Current: 29/623.4
• CPC Class Codes: H01M 6/188 Processes of manufacture
• CPC Class Codes: H01M 6/40 Printed batteries , e.g. thin film batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y10T 29/49112 including laminating of indefinite length material
• CPC Class Codes: Y10T 29/49114 including adhesively bonding
• CPC Class Codes: Y10T 29/49115 including coating or impregnating

Abstract

An electrolyte is formulated as a printing ink and laid down by an in-line press for manufacturing printed electrochemical cells. A curing station transforms the electrolyte to perform additional functions such as separating electrodes, preventing leakage, bonding cell layers, and resisting evaporation.

Claims

1. A method of forming a succession of electrochemical cells along an in-line press comprising the steps of:

advancing at least one web along an in-line press;

formulating an electrolyte composition containing an electrolyte and a monomer;

printing the electrolyte composition in a succession of patterns on the at least one web;

chemically transforming the electrolyte composition converting the monomer into a polymer that forms a matrix within which the electrolyte is embedded; and

arranging the succession of electrolyte patterns in relation to a succession of electrode patterns to form a succession of electrochemical cells along the at least one web.

2. The method of claim 1 in which said step of chemically transforming the electrolyte composition includes chemically transforming the electrolyte composition from an electrolyte composition within which the monomer contributes low adhesive properties to the electrolyte composition into an electrolyte composition within which the polymer contributes high adhesive properties to the electrolyte composition.

3. The method of claim 2 in which the electrolyte composition containing the monomer is formulated for transfer printing and said step of printing includes transfer printing the electrolyte composition.

4. The method of claim 3 in which the chemically transformed electrolyte composition containing the polymer is a pressure-sensitive adhesive.

5. The method of claim 2 in which the electrolyte composition containing the monomer is formulated for injection printing and said step of printing includes injection printing the electrolyte composition.

6. The method of claim 5 in which the electrolyte composition containing the monomer is flowable under force of gravity.

7. The method of claim 1 in which said step of chemically transforming includes radiation curing of the electrolyte composition.

8. The method of claim 1 in which the matrix holds the electrolyte in place without preventing movement of ions between the electrodes.

9. The method of claim 8 in which the matrix also functions as a separator between the electrodes.

10. The method of claim 8 in which the matrix also functions as an adhesive for bonding layers of the at least one web together.