Method and system for determining state of charge, and battery system
AssigneeSamsung SDI Co., Ltd.
InventorSangmin HA
Life of this patent
Estimating the term…
Abstract
A method for determining a state of charge of a battery system, including calculating a voltage difference between a first voltage detected at a first time point and a second voltage detected at a second time point, for each of a plurality of cells included in a battery module, selecting a representative cell having a maximum voltage difference among the plurality of cells, and estimating a state of charge of the battery module by using a representative cell voltage of the representative cell.
Claims20
A method for determining a state of charge of a battery system, comprising:
- calculating a voltage difference between a first voltage detected at a first time point and a second voltage detected at a second time point, for each of a plurality of cells included in a battery module;
- selecting a representative cell having a maximum voltage difference among the plurality of cells;
- and
- estimating a state of charge of the battery module by using a representative cell voltage of the representative cell.
An apparatus for determining a state of charge of a battery system, comprising:
- a detection device detecting a voltage of each of a plurality of cells included in a battery module;
- and
- a battery management system calculating a voltage difference between a first voltage detected at a first time point and a second voltage detected at a second time point for each in the plurality of cells, selecting a cell having a maximum voltage difference among the plurality of cells as a representative cell, and estimating a state of charge of the battery module using a cell voltage of the representative cell.
A method for determining a state of charge of a battery system, comprising:
- calculating a voltage difference between a first voltage detected at a first time point and a second voltage detected at a second time point, for each of a plurality of cells included in a battery module;
- selecting a representative cell having a maximum voltage difference among the plurality of cells;
- estimating a state of charge of the battery module by using a representative cell voltage of the representative cell;
- and
- performing a control function or a protection function based on the estimated state of charge of the battery module.
Dependencies are inferred from the claim text.