초록 ▼

A battery diagnostic method for monitoring the status of a battery in an electrical system and continuously providing a relatively accurate prediction of battery condition and performance, more particularly, a self-adjusting method for providing the best possible prediction of a battery's reserve ti

A battery diagnostic method for monitoring the status of a battery in an electrical system and continuously providing a relatively accurate prediction of battery condition and performance, more particularly, a self-adjusting method for providing the best possible prediction of a battery's reserve time before, during, and after a battery discharge. The method of the present invention utilizes different prediction methods depending on what state the electrical system is in; that is, before, during or after a battery discharge. By determining what state the system is in, the most effective prediction method can be utilized to provide an accurate battery reserve time. By providing a relatively accurate continuous reserve time prediction, the method helps prevent a complete loss of power in an electrical system relying on a battery to supply the system's electrical power.

대표청구항 ▼

[ What is claimed is:] [1.] A method of monitoring the condition of a battery in an electrical system in order to provide a prediction of battery reserve time, comprising the steps of:a) making an initial prediction of battery reserve time (t);b) adjusting the prediction of battery reserve time for

[ What is claimed is:] [1.] A method of monitoring the condition of a battery in an electrical system in order to provide a prediction of battery reserve time, comprising the steps of:a) making an initial prediction of battery reserve time (t);b) adjusting the prediction of battery reserve time for changing load conditions in the electrical system until a battery discharge is sensed;c) adjusting the prediction of battery reserve time by summing capacity discharged from battery (AH.sub.out) and capacity restored to battery (AH.sub.in) until the end of Coup de Fouet portion of battery discharge is sensed;d) calculating battery reserve time using diagnostic discharge method until end of battery discharge and beginning of battery recharge is sensed;e) adjusting battery reserve time by summing capacity discharged from battery (AH.sub.out) and capacity restored to battery (AH.sub.in) until end of battery recharge is sensed; andf) repeating step b) through step f).