Power supply apparatus, transport apparatus having the power supply apparatus, estimation method for estimating correlation information between charging rate of storage unit and open-circuit voltage, and program for estimating correlation information

摘要

To efficiently estimate correlation information between SOC and OCV of a power storage unit. A power supply device includes: a first power storage unit; a second power storage unit having a higher energy density and a lower output density than the first power storage unit; and charging / discharging between the first power storage unit and the second power storage unit And a circuit module having a control unit for controlling the charge / discharge circuit. The control unit is a combination of the first SOC and the first OCV that is the charge rate of the first power storage unit and the open-circuit voltage. Before and after the plurality of times of charge transfer between the first power storage unit and the second power storage unit, the data and the second data that is a combination of the second SOC and the second OCV, which are the charging rate and the open circuit voltage of the second power storage unit The first operation for estimating the first correlation, which is the correlation information between the SOC and the OCV of the first power storage unit, is executed from the first data set including the reference data, and the control unit stores a plurality of Based on the comparison of the stored data and the set of second data, Performing a second operation for estimating a second correlation is a correlation information of OC and OCV. [Selection] Figure 7