Toyota Jidosha Kabushiki Kaisha

Subaru Corporation

Ippei Takesue

Ryosuke Oya

Yu Shimizu

Daisuke Kamikihara

Fumiyoshi Kuribara

Takuya Itoh

Yo Masuda

Daiki Takayama

Akira Umemoto

Kazuya Fuke

Tomohiro Narematsu

Tomoya Aoki

Yasuyuki Morishita

A battery electric vehicle includes a battery, an inverter having three arm circuits, a motor having three coils connected to a neutral point and three arm circuits, a relay, a ground wire, and a controller. The controller can selectively perform a normal charging operation and a heat generation charging operation. In normal charging operation, equal current flows in all three coils in the positive direction from the neutral point to the arm circuit. In the heat generation charging operation, a first current flows in the positive direction in at least one of the three coils, and a second current flows in the opposite direction from the arm circuit toward the neutral point in the other coils. The total value of the first currents is greater than the total value of the second currents.

Battery electric vehicle

A vehicle includes a secondary battery, a heater configured to be able to raise a temperature of the secondary battery, and a charging control unit configured to be connectable to an external power source. The charging control unit is configured to be able to output electric power supplied from the external power source to the secondary battery and the heater when connected to the external power source. The charging control unit is configured to be able to request the external power source for a requested power amount, and to be able to receive a supply of a supplied power amount in accordance with the requested power amount from the external power source. The charging control unit requests the external power source for the requested power amount including a first power amount required for charging the secondary battery and a second power amount required for heating by the heater.

Vehicle

A relay drive control device is configured to control drive of a relay for connecting a battery mounted on a vehicle and an external power supply. The relay drive control device includes a controller configured to, when driving the relay, supply an output voltage of the battery to the relay after increasing the output voltage to a voltage value at which the relay is drivable.

Relay drive control device, control method, and storage medium

Growing community of inventors

Nisshin, Japan

Ippei Takesue