Mazda Motor Corporation

Junya Kono

Kazuo Iwata

Shinya Fujioka

Yuta Otsuka

Yuki Ida

Daisuke Watanabe

Tomoyoshi Matsushima

Kunihiro Jo

Haruki Yamane

Yoshihiko Yayoshi

Tomohiro Masui

Yoshinobu Katayama

To provide a contactor failure determination apparatus capable of appropriately determining failure of a contactor provided in a vehicle, a voltage sensor capable of detecting rising or dropping of a voltage of a second circuit including an external charger is provided. When an external charging request is made, a first control for closing each external charging contactor is executed, a second control for closing a pre-charge contactor is executed after execution of the first control, a third control for closing a second main contactor is executed after execution of the second control, and response to the voltage sensor detecting that the voltage of the second circuit has not risen after execution of the third control, it is determined that at least one of the external charging contactors has failed in an open state.

Contactor failure determination apparatus for vehicle

A battery device for a vehicle, which can be miniaturized while including ancillary instruments such as a relay device. The battery device is mounted in a lower portion of a vehicle, and including a battery case; a plurality of battery modules accommodated in the battery case and arranged such that at least some of the battery modules are stacked in a plurality of levels; and a first relay device that switches connection and disconnection between external electric devices and the battery modules. The first relay device is disposed on a side in a vehicle width direction of a portion where the battery modules are stacked in a plurality of levels.

Battery device for vehicle

Growing community of inventors

Hiroshima, Japan

Junya Kono