Method for charging and method for determining an end-of-charge criterion of a nickel-based battery

摘要

The method for charging an electrochemical nickel-based battery having a predetermined nominal capacity, including at least one measurement of the voltage of the battery and one measurement of the temperature representative of the battery. The battery is connected to an intermittent source of energy. The charging of the battery is stopped when the voltage measured at the terminals of the battery reaches a voltage threshold, depending on the measured temperature and representative of a capacity charged in the battery corresponding to a charging efficiency equal to or higher than 90% of the maximum charging efficiency.

主权项

1. A method for charging an electrochemical nickel-based battery having a predetermined nominal capacity, the method comprising the following steps:
measuring a battery voltage at terminals of the battery; measuring a temperature representative of the battery, charging the battery with an intermittent and variable-current source of energy, the charging of the battery being stopped when the voltage measured at the terminals of the battery reaches a voltage threshold, the voltage threshold being dependent on the measured temperature such that an increase in the measured temperature from −10° C. to 40° C. decreases the voltage threshold in steps, the voltage threshold being constant in each step, and the voltage threshold being representative of a capacity charged in the battery corresponding to a charging efficiency equal to or higher than 90%.