Power supply control device, power supply device, and power supply control method

A power supply control device configured to control charging and discharging of a power supply device including a plurality of power supply units which are connected in parallel to a load and a power generation unit,

• wherein the power supply control device
• has relationship information indicating a relationship among a charge current flowing from the power generation unit to the power supply device, a charge current ratio that is a ratio of input currents of the plurality of power supply units, and a power loss of the power supply device,
• acquires a measured value of the charge current flowing from the power generation unit to the power supply device,
• obtains, from the relationship information, the charge current ratio at which the power loss of the power supply device corresponding to the acquired measured value of the charge current flowing from the power generation unit to the power supply device is minimized, and
• adjusts a charge current ratio set to the power supply control device so as to match with the charge current ratio obtained from the relationship information.

A power supply control method for controlling, using a computer, charging and discharging of a power supply device including a plurality of power supply units which are connected in parallel to a load and a power generation unit, the power supply control method comprising:

• providing relationship information indicating a relationship among a discharge current flowing from the power supply device to the load, a discharge current ratio that is a ratio of output currents of the plurality of power supply units, and a power loss of the power supply device;
• acquiring a measured value of the discharge current flowing from the power supply device to the load;
• obtaining, from the relationship information, the discharge current ratio at which the power loss of the power supply device corresponding to the acquired measured value of the discharge current flowing from the power supply device to the load is minimized;
• and
• adjusting a discharge current ratio set to the power supply device so as to match with the discharge current ratio obtained from the relationship information.

A power supply control method for controlling, using a computer, charging and discharging of a power supply device including a plurality of power supply units which are connected in parallel to a load and a power generation unit, the power supply control method comprising:

• providing relationship information indicating a relationship among a charge current flowing from the power generation unit to the power supply device, a charge current ratio that is a ratio of input currents of the plurality of power supply units, and a power loss of the power supply device;
• acquiring a measured value of the charge current flowing from the power generation unit to the power supply device;
• obtaining, from the relationship information, the charge current ratio at which the power loss of the power supply device corresponding to the acquired measured value of the charge current flowing from the power generation unit to the power supply device is minimized;
• and
• adjusting a charge current ratio set to the power supply device so as to match with the charge current ratio obtained from the relationship information.