Method for determining the state of preservation of lead accumulators

摘要

Method for determining the state of preservation of lead accumulators from the time constant of a recovery phase of the terminal voltage, which starts after a discharge lasting 15 seconds by a high current which is kept constant, and extends as an exponential function, the parameters of the exponential function being determined from four measurement values of the terminal voltage of the battery without load, with load and recovering. The invention is used in analyzing lead accumulators. <IMAGE>