Method for quick charging of rechargeable batteries

A method for quick charging a rechargeable battery such as in a motor vehicle, comprising the steps of:

• feeding a charging current to the battery in the form of a constant value current impulses, wherein in reaching a maximum cutoff voltage said charging current is diminished whereby no harmful heating of the battery occurs;
• during pauses of the current impulses, measuring an individual charging condition of the battery by measuring a respective clamp voltage of the battery;
• wherein said charging current comprises a plurality of different strength charging currents which are brought into effect depending on the respective charging condition of the battery;
• assigning each of said plurality of different strength charging currents a specific zone in an electrochemical potential gradient of the battery, wherein an overreaching of an upper zone limit of one zone leads to a shut off of its respective charging current and a turning on of the charging current of an adjoining zone:
• in a transition phase, reducing said charging current fed to the battery from a first strength charging current of a first charging phase to a second strength charging current of a second charging phase when an electrochemical voltage of the battery reaches a first upper zone limit voltage of said first charging phase;
• in said transition phase, increasing said charging current fed to the battery from said second strength charging current to said first strength charging current when the electrochemical voltage falls below said first upper zone limit voltage, whereby an average charging current fed to the battery in said transition phase is between said first strength charging current and said second strength charging current;
• when said electrochemical voltage of the battery climbs above a lower zone limit voltage of said second charging phase, holding said charging current fed to the battery in said second phase on said second strength charging current;
• and
• if in said second phase a second charging phase upper zone limit voltage is reached, reducing said charging current fed to the battery to a third strength charging current in a third phase, fixing third phase lower and upper zone limit voltages, and by switching on and off said third strength charging current an average charging current to the battery in said third phase is further reduced.