Patent ID: 11912388
Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
Field: Transport (Mechanical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 0:
1. A marine vessel power supply system for a marine vessel including an electric motor to rotate a propeller, the marine vessel power supply system comprising:
an inverter to supply electric power to the electric motor;
a battery to supply electric power to the inverter; and
an electronic control unit configured or programmed to control the inverter; wherein
the inverter includes:
an inverter circuit to convert DC electric power supplied from the battery to AC electric power;
a voltage detector to detect a voltage in a wiring between the battery and the inverter circuit; and
a microcomputer configured or programmed to communicate with the electronic control unit and to control the inverter circuit according to a command supplied from the electronic control unit; and

the electronic control unit is configured or programmed to calculate an SOC estimate indicative of an estimated state-of-charge value of the battery based on a value of the voltage detected by the voltage detector and acquired from the microcomputer.