Honda Giken Kogyo Kabushiki Kaisha

Kazuhiko Aitaka

Harumi Takedomi

Osamu Hasegawa

Kazunori Watanabe

Makoto Anazawa

The present invention aims to cool high tension electrical equipment efficiently with a small, lightweight device. The high tension electrical equipment cooling structure is provided for cooling batteries which supply electricity to the operating motor via an inverter, and the inverter using cooling air, and comprises an equipment box for guiding cooling air introduced from a cooling air inlet port into a cooling air outlet port, and a fan for introducing cooling air from the cooling air inlet port. A shutter that consists of an elastic material is disposed inside the intake duct. The shutter closes off the cooling air flow path, and when negative pressure is generated downstream of the shutter due to the operation of the fan, the shutter undergoes elastic deformation, and as a result, the cooling air flow path is opened.

Cooling structure for high tension electrical equipment

A high tension electrical equipment cooling structure for cooling batteries which supply electricity to the operating motor via an inverter, and the inverter using cooling air, and includes an equipment box for guiding cooling air introduced from a cooling air inlet port into a cooling air outlet port, and a fan for introducing cooling air from the cooling air inlet port. A shutter that includes an elastic material is disposed inside the intake duct. The shutter closes off the cooling air flow path, and when negative pressure is generated downstream of the shutter due to the operation of the fan, the shutter undergoes elastic deformation, and as a result, the cooling air flow path is opened.

A high voltage electrical packaging box structure includes a box body, and a high voltage electrical part which is accommodated in the box body. In the high voltage electrical packaging box, an interposing member which is formed using an expandable resin, is disposed between the box body and the high voltage electric part. Air may be pass through the inside of the box body so as to cool down the high voltage electric part placed in the box body.

High voltage electrical packaging box structure

An electric vehicle includes plurality of batteries accommodated in a rear portion of a battery box, and an electric part is accommodated in an electric part accommodating chamber provided in a front portion of the battery box. Cooling air supplied from a cooling fan to the rear portion of the battery box cools the batteries having a large thermal resistance, while being passed through a first cooling air passage around outer peripheries of the batteries at a low flow rate. A second cooling air passage having a smaller sectional area than that of the first cooling air passage is provided below the electric part accommodating chamber, and cooling fins protruding downwards from the electric part are exposed within the second cooling air passage. The second cooling air passage extends continuously the first cooling air passage in a downstream direction of airflow, so that cooling air which has first cooled the batteries then cools the electric part having a smaller thermal resistance, while being passed through the second cooling air passage at a higher flow rate than that in the first cooling air passage.

Growing community of inventors

Utsunomiya, Japan

Kazuhiko Aitaka