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Battery charger control circuit

  • US 3,886,427 A
  • Filed: 01/02/1974
  • Issued: 05/27/1975
  • Est. Priority Date: 10/17/1972
  • Status: Expired due to Term
First Claim
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1. Apparatus for controlling the charging of a battery, comprising:

  • input means for carrying a signal representing the potential of a battery;

    measuring means for geNerating a plurality of energy-level digital signals indicating energy levels of the battery;

    timer means for determining when the time between certain of said energy-level digital signals exceed a predetermined maximum time;

    control means for selectively reducing and increasing the rate of charging of the battery;

    said control means including logic means for causing said control means to reduce the rate of charging of the battery when said time between said certain energy-level digital signals exceeds said predetermined maximum time during a charging run;

    said measuring means including a first counter and pulsegenerator means for applying pulses to said first counter, whereby said first counter counts said pulses;

    said first counter including a plurality of different order first output means;

    said timer means including a second counter having an input terminal for receiving pulses for the counting thereof and a plurality of different order second output means;

    one of the first output means of said first counter being connected to the input of said timer means, whereby said timer begins time periods under the control of said control means;

    said control means including means for increasing the rate of charging of the battery when at least one of said first and said second counters counts to a predetermined one of said output means while said battery charger is not going through a charging run.

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