Techniques for enhanced battery pack recharging

摘要

A method includes detecting that a battery pack requires charging and is currently operable for recharging. The method can identify a specific cell having a highest voltage in response to the detecting. The method can then recharge each cell of the battery pack to a predetermined voltage that is a sum of (i) a maximum open circuit voltage of the specific cell and (ii) a voltage based on a resistance of and a first current supplied to the specific cell. When a temperature of the specific cell is less than a predetermined temperature or an age of the specific cell is greater than a predetermined age, the method includes recharging each cell to the predetermined voltage at less than the first current when (i) a predetermined period has elapsed or (ii) a voltage of the specific cell is less than a voltage threshold.

主权项

1. A method, comprising:
detecting, at a controller of an electric vehicle, the controller including one or more processors, that (i) a battery pack of the electric vehicle requires recharging and (ii) the battery pack is currently operable to be recharged by an external charging unit, the battery pack including a plurality of cells; identifying, at the controller, a specific cell of the plurality of cells that has a highest voltage in response to the detecting; and commanding, by the controller, the external charging unit to recharge each cell of the battery pack to a predetermined voltage that is a sum of (i) a maximum open circuit voltage of the specific cell and (ii) a voltage based on a resistance of the specific cell and a first current supplied to the specific cell.