×

Method and device for automatically switching and adjusting the load of a battery discharger

  • US 5,998,973 A
  • Filed: 01/07/1999
  • Issued: 12/07/1999
  • Est. Priority Date: 03/20/1998
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method for automatically switching and adjusting the load of a battery discharger, comprising:

  • a step of setting the discharge conditions in which the discharge current, discharge voltage, discharge time and end voltage are set;

    a step of setting the main load (stationary load) in which the number of constant power PTC units to be operated is determined based on the values set in the previous step;

    a step of setting the switched load in which the number of resistive heating elements to be activated is selected by detecting the current changes;

    a step of micro-adjusting the load current in which the operating current of a plurality of additional resistive heating elements is automatically micro-adjusted by way of a PWM to complement the difference between the set current and the actual current, thereby achieving a discharge with constant discharge current;

    a step of detecting in which whether the number of resistive heating elements to be switched is determined based on the pulse changes of the PWM; and

    a step of switching the load in which the number of resistive heating elements which act as the switched load is adjusted based on the results of the detecting step.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×