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

Claim 0:
1. 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 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,
acquires a measured value of the discharge current flowing from the power supply device to the load,
obtains, 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,
adjusts a discharge current ratio set to the power supply control device so as to match with the discharge current ratio obtained from the relationship information, and
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.