SOC SOH APARRATUS AND METHOD FOR MANAGEMENT PARALLEL BATTERYPACK's SOC AND SOH

摘要

A method of controlling an SOC value and an SOH value of a battery pack system in which two or more battery packs are connected in parallel according to an embodiment of the present invention includes the steps of calculating an SOC value and an SOH value of each of two or more battery packs connected in parallel, A maximum SOC value, a minimum SOC value, a minimum SOH value, an average SOC value, and an average SOH value among the values calculated in the individual SOC value and SOH value calculation step, / Average value detecting step, comparing the values detected in the maximum / minimum / average value detecting step with the SOC tolerance value and the SOH tolerance value of the battery pack system in which two or more preset battery packs are connected in parallel, A temporary SOC value and an SOH value setting execution cycle including the temporary SOC value and the SOH value setting step for setting the temporary SOH value and the number of the execution cycle of setting the temporary SOC value and SOH value Counting the number of times of counting in the counting step and counting the number of times of counting in the counting step is equal to or greater than a predetermined value; resetting the number of counts, and based on the temporary SOC value and the SOH value set in the temporary SOC value and SOH value setting step And a system SOC value and an SOH value changing step for changing the SOC value and the SOH value of the battery pack system in which the battery packs are connected in parallel, wherein the system SOC value and the SOH value changing step are performed in the counting step Returning to the individual SOC value and the SOH value calculating step when the counted number of times is less than the predetermined value and performing the temporary SOC value and the SOH value setting execution cycle again; The SOC value, the temporary SOH value, and the current system SOC value and SOH value of the battery pack system in which two or more battery packs are connected in parallel The difference value calculation step may further include a difference value calculation step of calculating a difference value. If the difference value calculated in the difference value calculation step is a value within a preset predetermined range, the provisional SOC value and the temporary value set in the SOH value setting step The SOC value and the temporary SOH value are set as the SOC value and the SOH value of the battery pack system in which the two or more battery packs are connected in parallel and if the calculated difference value is a value outside the preset predetermined range, The system SOC value and the SOH value of the battery pack system in which the two or more battery packs are connected in parallel are changed by a predetermined value in a decreasing direction, The current system SOC value and the SOH value of the entire system.