Method of forming button-type batteries

• US 5,494,495 A
• Filed: 10/11/1994
• Issued: 02/27/1996
• Est. Priority Date: 10/11/1994
• Status: Expired due to Term

• Current Assignee: Round Rock Research LLC
• Original Assignee: Micron Communications, Inc. (Micron Technology, Inc.)
• Inventors: Tuttle, Mark E.
• Primary Examiner(s): Maples, John S.
• Application Number:
  US08/321,251
• Time in Patent Office: 504 Days
• Field of Search: 29/623.2, 29/623.3, 429/173, 429/174, 429/171
• US Class Current: 29/623.2
• CPC Class Codes: H01M 50/109 of button or coin shape
• CPC Class Codes: H01M 6/181 with polymeric electrolytes
• CPC Class Codes: H01M 6/188 Processes of manufacture
• CPC Class Codes: Y10T 29/49108 Electric battery cell making
• CPC Class Codes: Y10T 29/4911 including sealing

Abstract

A method of forming a button-type battery includes: a) providing a sheet of cathode material bonded to solid electrolyte material; b) cutting the cathode material and solid electrolyte material from the sheet into a plurality of composite cathode/solid electrolyte pieces which are individually sized and shaped to constitute the electrolyte and cathode components of a single button-type battery; c) providing a pair of first and second terminal housing members in facing juxtaposition to one another, the first and second terminal housing members having respective peripheries; d) providing one of the composite cathode/electrolyte pieces intermediate the juxtaposed first and second terminal housing members; e) providing an anode intermediate the juxtaposed first and second terminal housing members, the anode being positioned to electrically connect with one of the first or second terminal housing members and the solid electrolyte, and the cathode being positioned to electrically connect with the other of the first or second terminal housing members; f) providing electrically insulative sealing gasket material intermediate the first and second terminal housing member peripheries; and g) crimping the first and second terminal housing member peripheries together into an enclosed dry battery housing with the gasket material being interposed between the first and second terminal housing members to provide a fluid-tight seal and to provide electrical insulation therebetween. A button-type battery is also disclosed.

Claims

1. A method of forming a button-type battery comprising the following steps:

providing a sheet of cathode material bonded to solid electrolyte material;

cutting the cathode material and solid electrolyte material from the sheet into a plurality of composite cathode/solid electrolyte pieces which are individually sized and shaped to constitute the electrolyte and cathode components of a single button-type battery;

providing a pair of first and second terminal housing members in facing juxtaposition to one another, the first and second terminal housing members having respective peripheries;

providing one of the composite cathode/electrolyte pieces intermediate the juxtaposed first and second terminal housing members;

providing an anode intermediate the juxtaposed first and second terminal housing members, the anode being positioned to electrically connect with one of the first or second terminal housing members and the solid electrolyte, and the cathode being positioned to electrically connect with the other of the first or second terminal housing members;

providing electrically insulative sealing gasket material intermediate the first and second terminal housing member peripheries; and

crimping the first and second terminal housing member peripheries together into an enclosed dry battery housing with the gasket material being interposed between the first and second terminal housing members to provide a fluid-tight seal and to provide electrical insulation therebetween.

2. The method of forming a button-type battery of claim 1

wherein the cutting step comprises defining cathode and solid electrolyte peripheral edges which align with one another.

3. The method of forming a button-type battery of claim 1 wherein the sheet is also provided with a conductive substrate to which the cathode material is adhered, the cutting step also comprising cutting through the conductive substrate.

4. The method of forming a button-type battery of claim 1 wherein the sheet is provided with anode material bonded to the solid electrolyte material, the cutting step also comprising cutting through the anode material to define a plurality of composite cathode/solid electrolyte/anode pieces.

5. The method of forming a button-type battery of claim 1 wherein the sheet is also provided with a conductive substrate to which the cathode material is adhered, the cutting step also comprising cutting through the conductive substrate and defining cathode, solid electrolyte and conductive substrate peripheral edges which align with one another.

6. The method of forming a button-type battery of claim 1 wherein the sheet is provided with anode material bonded to the solid electrolyte material, the cutting step also comprising cutting through the anode material to define a plurality of composite cathode/solid electrolyte/anode pieces having cathode, solid electrolyte and anode peripheral edges which align with one another.

7. The method of forming a button-type battery of claim 1 wherein the sheet is provided with a conductive substrate to which the cathode material is adhered and with anode material bonded to the solid electrolyte material, the cutting step also comprising cutting through the conductive substrate and the anode.