Yamaha Hatsudoki Kabushiki Kaisha

Toshiaki Yamada

Junji Terada

Yutaka Mizuno

Masahisa Kuranishi

Mikio Saitou

Mikio Saito

A hybrid-driven device includes an electric power storage device and a fuel cell. The hybrid-driven device can be a vehicle such as a motorcycle, scooter, watercraft, an automobile, and the like. The electric power storage device, such as a battery, and a fuel cell, can be formed into independent unitary modules, each having a controller. Each of the modules can be removably mounted as a unit to the vehicle. Additionally, each independent module can include sensors for detecting a state of the respective module. Each module can also include memory for storing data gathered by the sensors. The vehicle can also include a controller which controls the electrical power storage device and the fuel cell to provide smooth operation of the device.

Hybrid drive system

An electric vehicle comprises a first power source and a second power source. The first power source can be used to supply a substantially constant base power level and the second power source can be used to supply a variable power level such that a variable load demand can be filled by combining the base power level and the variable power level. The first source can be used to supply power to the second source when the second source is operating at a decreased charge or power level. The base power level can be varied based upon the remaining charge or power level contained within the second source. A number of control methods for operating the power supply of the electric vehicle are disclosed.

Power source control method for an electric vehicle

In a motorized vehicle power system provided with a rechargeable battery a battery control unit for executing control of battery conditions including the remaining capacity of the rechargeable battery and a charging unit for charging the rechargeable battery the charging unit is provided with a discharging device for executing refreshing discharge of the rechargeable battery and a discharge control device for controlling the refreshing discharge by the charging device on the basis of a refreshing discharge requirement signal sent from the battery control unit

Growing community of inventors

Iwata, Japan

Toshiaki Yamada