Patent ID: 11971768
Assignee: YAZAKI CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H  Y | IPC G

Claim 3:
4. 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,
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,
estimates a battery state of at least one of secondary batteries included in the plurality of power supply units, and
updates the relationship information according to the estimated battery state.