Battery controller, management system, battery control method, battery control program, and storage medium

A battery controller comprising:

• a holder configured to hold, at times in a predetermined time period defined by a predetermined time interval, values of an amount of a received power, the received power having been supplied from an electrical power receiving system to equipment that is to be supplied with a power from a rechargeable battery;
• a first calculator configured to calculate a respective difference, at each of the times, between present values of the amount of the received power supplied from the electrical power system to equipment and last-held values of the amount of the received power last-held by the holder;
• an acquirer configured to acquire a command value or planned value of the amount of the received power for the predetermined time period;
• a second calculator configured to calculate limit values of the amount of the received power at the times having intervals that are shorter than the each predetermined time period, by using the command value or planned value as a limit value of the amount of the received power at an end of the predetermined time period;
• and
• a controller configured to control charge and discharge of the rechargeable battery, based on the respective differences calculated by the first calculator and on the limit values of the amount of the received power calculated by the second calculator, wherein the controller outputs a signal indicating an output value of the rechargeable battery to the rechargeable battery, based on a value that is less by a margin value than a maximum output power value of the rechargeable battery.