Method of charging double electric layer electrochemical capacitors

A method of charging an electrochemical electrical energy storage device, comprising:

• connecting said electrochemical electrical energy storage device to a an electrical energy source;
• charging said electrochemical electrical energy storage device with electrical energy from said constant current electrical energy source;
• after a specified portion of charging electrical energy is passed by said electrochemical electrical energy storage device, recurrently turning off said constant current electrical energy source so as to produce intermittent charging and rest periods, each having some duration;
• measuring the voltage of said electrochemical electrical energy storage device at the end of each rest period;
• comparing the measured voltage at the end of each rest period with the measured voltage obtained at the preceding rest period;
• using said comparison of voltage measurements to determine a voltage increment;
• and
• terminating said charging process based on the value of said voltage increment;
• wherein the passing of specified portions of said charging electrical energy by said electrochemical electrical energy storage device during charging is controlled.

A method of charging an electrochemical electrical energy storage device, comprising:

• connecting said electrochemical electrical energy storage device to an electrical energy source having a randomly changing current value;
• charging said electrochemical electrical energy storage device with electrical energy from said constant current electrical energy source;
• after a specified portion of charging electrical energy has been passed by said electrochemical electrical energy storage device, recurrently turning off said constant current electrical energy source so as to produce intermittent periods of rest having some duration;
• measuring the voltage of said electrochemical electrical energy storage device at the end of each period of rest;
• comparing the measured voltage at the end of each period of rest with the measured voltage obtained at the preceding period of rest;
• using said comparison of voltage measurements to determine a voltage increment;
• and
• terminating said charging process based on the value of said voltage increment;
• wherein the passing of specified portions of said charging electrical energy by said electrochemical electrical energy storage device during charging is controlled.