METHOD OF EXTENDING THE SHELF-LIFE OF A COIN CELL IN AN APPLICATION REQUIRING HIGH PULSE CURRENT

• US 20120256595A1
• Filed: 04/08/2011
• Published: 10/11/2012
• Est. Priority Date: 04/08/2010
• Status: Active Grant

• Current Assignee: BAE Systems Information and Electronic Systems Integration Incorporated (BAE Systems Plc)
• Original Assignee: BAE Systems Information and Electronic Systems Integration Incorporated (BAE Systems Plc)
• Inventors: O'Sullivan, Paul B.
• Granted Patent: US 9,147,911 B2
• Time in Patent Office: Days
• US Class Current: 320/135
• CPC Class Codes: H01M 10/44 Methods for charging or discharging circuits for charging H02J7/00
• CPC Class Codes: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A system is provided for extending the shelf life capacity of a coin cell, the system utilizing a coin cell; a voltage step up converter/regulator, configured to step up the voltage of output from the coin cell and the storage capacitor; and a storage capacitor receiving output from the voltage step up converter/regulator.

Claims

1. A system for extending the shelf life capacity of a coin cell, the system comprising:

a coin cell;

a voltage step up converter/regulator, configured to step up the voltage of output from said coin cell; and

a storage capacitor receiving output from said voltage step up converter/regulator. and a firing circuit disposed on the output side of said storage capacitor.

2. The system according to claim 1 further comprising a resistor disposed between said voltage step up converter/regulator and said storage capacitor.

3. The system according to claim 1 wherein said voltage step up converter/regulator is a boost regulator.

4. The system according to claim 1 wherein said voltage step up converter/regulator is a regulator with output voltage that is higher than input voltage and high efficiency at low power levels.

5. A method for extension of a shelf life of a coin cell powered firing circuit;

operating a coin cell at a low voltage;

using a converter to boost voltage from said coin cell; and

boosting and regulating said voltage above a threshold voltage of said firing circuit.

7. The method of claim 5, said method further comprising filtering said voltage with a storage capacitor resistor.

6. The method of claim 6 further comprising storing said voltage in a storage capacitor.