Patent ID: 6137266
Filing Date: 2000-10-24
Classification: H02J

Abstract:
A battery recharging circuit for a valve regulated lead-acid battery having a positive battery electrode, a negative battery electrode, a DC voltage source for generating a voltage applied to the positive and negative battery electrodes, and a reference electrode, the circuit comprising:a voltage source for selectively applying a voltage between the reference electrode and a selected one of the battery electrodes for regenerating the reference electrode;a reference voltage source for generating a reference voltage;means for measuring a voltage between the reference electrode and said selected one of the battery electrodes;means for comparing said voltage measured between the reference electrode and said selected one of the battery electrodes to said reference voltage to generate an error correction signal; andmeans for adjusting the voltage generated by the DC voltage source based upon said error correction signal, such that the voltage of the DC voltage source applied to the battery electrodes is adjusted to thereby adjust said voltage between the reference electrode and said selected one of the battery electrodes to be substantially equal to said reference voltage.