×

Charge equalizer or series of connected battery strings

  • US 6,008,623 A
  • Filed: 03/16/1999
  • Issued: 12/28/1999
  • Est. Priority Date: 11/30/1998
  • Status: Expired due to Fees
First Claim
Patent Images

1. A charge equalizer adapting a battery charger to an equally charged series of connected battery strings, comprising:

  • a battery voltage sensing means for detecting each of the battery voltage in the series of connected battery strings and scaling the detected battery voltages to a proper voltage level to output;

    a microcontroller for receiving the output voltage signals scaled to a proper voltage level from the battery voltage sensing means and digitizing the output voltage signals and comparing them with a pre-determined voltage value, if any one of the digitized voltage signals from the batteries of the series of connected battery is higher than the pre-determined voltage value, to output a corresponding digital signal; and

    for producing a set of pulse-width-modulated (PWM) signals to output;

    a logic and driving means for receiving the digital signals and the pulse-width-modulated signals from the microcontroller and enhancing the driving capability of these signals after a logic process, then to output; and

    a flyback converter means for receiving the signals from the logic and driving means then to draw out the currents of the batteries in the series of connected battery strings as the digitized voltage signals are higher than the pre-determined voltage value, and then to charge the whole battery strings by recharging currents which proportion to said drawn out currents.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×