Method of testing an electrochemical device

Method of testing an electrochemical device

  • CN 1,938,599 B
  • Filed: 03/24/2005
  • Issued: 08/29/2012
  • Est. Priority Date: 03/26/2004
  • Status: Active Grant
First Claim
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1. method of testing the passivity fuel cell, this method comprises:

  • in the charging stage said passivity fuel cell is charged;

    At discharge regime said passivity fuel cell is discharged;

    On the part response of said passivity fuel cell being monitored at least of said discharge regime;

    According to monitored one of RESPONSE CALCULATION said passivity fuel cell, said or more than the value of one equivalent-circuit component;

    Wherein, said one or comprise first electric capacity (C1) of first resistance (R1) and fixed value more than one equivalent-circuit component, said first resistance (R1) is first element in the equivalent-circuit model;

    It represents the resistance between each fuel cell;

    Said first electric capacity (C1) is represented the electric capacity between the terminal of fuel cell, and wherein, equivalent-circuit component constitutes at least a portion of equivalent electrical circuit;

    Wherein, The first node of first resistance (R1) is connected to the first node of passivity fuel cell, and the Section Point of first resistance (R1) is connected to;

    (i) first node of second resistance (Rp), and second resistance (Rp) is represented the resistance of the film in the fuel cell;

    The (ii) first node of first electric capacity (C1);

    The (iii) first node of the 3rd resistance (R2);

    The resistance that the 3rd resistance (R2) representative is moved the ion in the film;

    Wherein, the Section Point of the 3rd resistance (R2) is connected to the first node of second electric capacity (C2), and second electric capacity (C2) is represented the dielectric effect of film;

    The Section Point of the Section Point of the Section Point of second resistance (Rp), first electric capacity (C1) and second electric capacity (C2) links together, and is connected to the Section Point of passivity fuel cell.

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