Mazda Motor Corporation

Shosuke Morimoto

Kazuya Kotani

Katsumasa Yoshida

Hiroaki Kashihara

Yuta Otsuka

Sho Kawanari

Tomoyuki Imamura

Yusuke Kame

Haruki Yamane

Takashi Yoshizaki

A smoothing capacitor is forcibly discharged, in a state where a battery is disconnected from a high-voltage circuit, first discharge control is initiated to consume electric charges of the smoothing capacitor by an in-vehicle component via a DC/DC converter. Thereafter, when a voltage of the smoothing capacitor is reduced and reaches a specified threshold, second discharge control is executed to forcibly discharge the electric charges in an active discharge circuit. In the case where continuous forced discharge occurs, delay control to delay execution timing of the second discharge control is further executed.

Forced discharge control system for smoothing capacitor provided to inverter

A battery, a regenerative generator, a capacitor capable of storing power generated by the regenerative generator, and a DC/DC convertor capable of allowing an output current to flow up to a specified permissible limit value are provided. The capacitor is connected to a first circuit portion connecting the regenerative generator and the DC/DC convertor. The battery is connected to a second circuit portion connecting the DC/DC convertor and electric loads. Thereby, power from the capacitor is supplied to electric loads by way of the DC/DC convertor until the output current of the DC/DC convertor reaches the specified permissible limit value, whereas power from the battery is supplied to the electric loads after the output current of the DC/DC convertor has reached the specified permissible limit value. A specified electric load is turned OFF when the power from the battery is supplied.

Power source control apparatus for vehicle

Growing community of inventors

Hiroshima, Japan

Shosuke Morimoto