×

Charging of batteries

  • US 6,154,011 A
  • Filed: 05/10/1999
  • Issued: 11/28/2000
  • Est. Priority Date: 09/15/1997
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for charging a battery comprising:

  • determining a resistance free maximum pulsed voltage as the battery is being charged above that of a known average resistance free pulsed voltage for the battery type, said determined resistance free maximum pulsed voltage being below that at which unacceptable gassing will occur,providing a repeatedly pulsed charging current to the battery sufficient to cause the determined resistance free maximum pulsed voltage to be reached over time,monitoring the resistance free maximum pulsed voltage to detect when the resistance free maximum pulsed voltage reaches the determined resistance free maximum pulsed voltage,continuing charging with the repeatedly pulsed charging current to maintain the resistance free maximum pulsed voltage at approximately the determined resistance free maximum pulsed voltage by at least one of;

    (I) reducing the amplitude of the pulsed charging current,(II) increasing the OFF-time of pulses of the pulsed charging current, and(III) decreasing the ON-time of pulses of the pulsed charging current.

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