System for scheduling battery charge and discharge in a reconfigurable battery

A method for scheduling battery cells for charging and discharging in a reconfigurable battery system, comprising:

• monitoring state of charge for each of a plurality of battery cells;
• partitioning the plurality of battery cells into a group of cells eligible for discharging and another group of cells eligible for charging in accordance with the state of charge of the battery cells;
• selecting a subset of battery cells from the group of cells eligible for discharging and discharging the battery cells in the subset, where a number of battery cells in the subset of battery cells is inversely correlated to a rate at which the plurality of battery cells recover voltage in a rest state;
• selecting a scheduling method based on the number of battery cells in the subset;
• charging one or more battery cells in the group of cells eligible for charging while one or more battery cells in the group of cells eligible for discharging are being discharged;
• and
• reassigning the plurality of battery cells into either the group of cells eligible for discharging or the group of cells eligible for charging after the step of charging one or more battery cells.

A method for scheduling battery cells for charging and discharging in a reconfigurable battery system, comprising:

• monitoring state of charge for each of a plurality of battery cells;
• partitioning the plurality of battery cells into a group of cells eligible for discharging and another group of cells eligible for charging in accordance with the state of charge of the battery cells;
• determining state of charge for each of the battery cells in the group of cells eligible for discharging,
• determining a median state of charge for the battery cells in the group of cells eligible for discharging, and computing a period of time for discharging as a function of the median,
• charging one or more battery cells in the group of cells eligible for charging while one or more battery cells in the group of cells eligible for discharging are being discharged;
• discharging battery cells in the group of cells eligible for discharging for the computed period of time while bypassing a given battery cell in the group of cells eligible for discharging having the lowest state of charge in the group of cells eligible for discharging;
• and
• reassigning the plurality of battery cells into either the group of cells eligible for discharging or the group of cells eligible for charging after the step of charging one or more battery cells.

A method for scheduling battery cells for charging and discharging in a reconfigurable battery system, comprising:

• monitoring state of charge for each of a plurality of battery cells;
• partitioning the plurality of battery cells into a group of cells eligible for discharging and another group of cells eligible for charging in accordance with the state of charge of the battery cells;
• determining state of charge for each of the battery cells in the group of cells eligible for discharging,
• determining a median state of charge for the battery cells in the group of cells eligible for discharging,
• charging one or more battery cells in the group of cells eligible for charging while one or more battery cells in the group of cells eligible for discharging are being discharged;
• discharging battery cells in the group of cells eligible for discharging by an amount equal to the median while bypassing a given battery cell in the group of cells eligible for discharging having the lowest state of charge in the group of cells eligible for discharging;
• and
• reassigning the plurality of battery cells into either the group of cells eligible for discharging or the group of cells eligible for charging after the step of charging one or more battery cells.