Power supply apparatus, transport device including power supply apparatus, estimating method of estimating correlation information between charge rate and open-end voltage of electric storage section, and computer readable medium for estimating correlation information

An estimating method of estimating correlation information between an SOC and an OCV of a first electric storage section, the SOC and the OCV being respectively a charge rate and an open-end voltage, and correlation information between an SOC and an OCV of an second electric storage section in a power supply apparatus, the power supply apparatus having:

• the first electric storage section;
• the second electric storage section which has an excellent energy density and a poor output density compared with the first electric storage section;
• and
• a circuit module which has a charge/discharge circuit that performs charge/discharge between the first electric storage section and the second electric storage section and a control section that controls the charge/discharge circuit, wherein
• the estimating method comprises:
• acquiring first data and second data before and after each of a plurality of times of charge transfers between the first electric storage section and the second electric storage section, the first data being a combination of a first SOC and a first OCV that are the SOC and the OCV of the first electric storage section, the second data being a combination of a second SOC and a second OCV that are the SOC and the OCV of the second electric storage section,
• performing a first operation of estimating a first correlation which is the correlation information between the SOC and the OCV of the first electric storage section from an aggregation of the first data including reference data, and
• performing a second operation of estimating a second correlation which is the correlation information between the SOC and the OCV of the second electric storage section based on a comparison between a plurality of stored data stored by the control section and an aggregation of the second data.

A non-transitory computer readable medium storing a program for estimating correlation information between an SOC and OCV of a first electric storage section, the SOC and the OCV being respectively a charge rate and an open-end voltage, and correlation information between an SOC and OCV of a second electric storage section in a power supply apparatus, the power supply apparatus having:

• the first electric storage section;
• the second electric storage section which has an excellent energy density and a poor output density compared with the first electric storage section;
• and
• a circuit module which has a charge/discharge circuit that performs charge/discharge between the first electric storage section and the second electric storage section and a control section that controls the charge/discharge circuit, wherein
• the program causes a computer to execute:
• acquiring first data and second data before and after each of a plurality of times of charge transfers between the first electric storage section and the second electric storage section, the first data being a combination of a first SOC and a first OCV that are the SOC and the OCV of the first electric storage section, the second data being a combination of a second SOC and a second OCV that are the SOC and the OCV of the second electric storage section,
• performing a first operation of estimating a first correlation which is the correlation information between the SOC and the OCV of the first electric storage section from an aggregation of the first data including reference data, and
• performing a second operation of estimating a second correlation which is the correlation information between the SOC and the OCV of the second electric storage section based on a comparison between a plurality of stored data stored by the control section and an aggregation of the second electric storage section.