Subaru Corporation

Yukio Karasawa

Takashi Fukuda

Shinichi Kimura

Takahiro Sakamoto

Shunsuke Ikeda

Tsukasa Murakami

A protection system for an electromagnetic relay mounted on a vehicle is configured to protect the electromagnetic relay from causing a coupling failure due to freezing of the electromagnetic relay. The system includes a temperature detector, a cooler, and a control unit. The temperature detector sequentially measures an ambient temperature of a location in which the electromagnetic relay is disposed and outputs information on a change in the ambient temperature. The cooler cools an electric power line coupled to a fixing terminal of the electromagnetic relay. The control unit activates the cooler to cool the electric power line in a case where the control unit determines that the electromagnetic relay has a possibility of freezing on the basis of the information on the change in the ambient temperature from the temperature detector.

Protection system for electromagnetic relay

A vehicle battery pack for an electric vehicle includes a battery, a battery-cooling-air channel, a fume exhaust channel, a fume-ventilation restricting unit, a temperature sensor, a blower fan, and a controller. Cooling air that cools the battery flows through the battery-cooling-air channel. Fumes generated from the battery flow through the fume exhaust channel. The fume exhaust channel is coupled to the battery-cooling-air channel. The fume-ventilation restricting unit closes off the fume exhaust channel from the battery-cooling-air channel in a normal state, whereas causing the battery-cooling-air channel and the fume exhaust channel to communicate with each other in an abnormal state. The temperature sensor detects a temperature of the fumes. The controller controls the blower fan, and increase the air volume of the blower fan on the basis of the temperature detected by the temperature sensor.

Vehicle battery pack

A junction box controller controls a junction box including a circuit for vehicle travel that supplies power from a battery for vehicle travel to an electrical component for vehicle travel and a charging circuit including a positive electrode charging relay and an negative electrode charging relay that are for use in coupling and decoupling the battery for vehicle travel to and from an external charging power source in a state in which the positive electrode charging relay and the negative electrode charging relay are coupled to the circuit for vehicle travel. The junction box controller includes a temperature sensor that detects a temperature of the circuit for vehicle travel, and a controller that, when the temperature of the circuit for vehicle travel reaches or exceeds a preset threshold, controls and switches on either one of the positive electrode charging relay and the negative electrode charging relay.

Junction box controller

A non-contact power receiving device includes a power receiving device, a shielding member, supports, a housing, and fastening elements. The power receiving device is mounted on a vehicle body and configured to receive wirelessly transmitted electric power. The shielding member is provided between the vehicle body and the power receiving device. The supports are provided so as to project from the vehicle body. The housing is provided between the supports and in which the power receiving device is disposed. The fastening elements are respectively mounted on the supports so as to be disposed on the opposite side of the housing and that respectively fasten the shielding member to the supports.

Growing community of inventors

Tokyo, Japan

Yukio Karasawa