Abstract: A battery pack includes a first battery module, a first battery case accommodating the first battery module, a second battery module, and a second battery case placed on an upper side of the first battery case so as to overlap each other and accommodating the second battery module. The second battery module is fixed to a fastening portion formed on a bottom surface of the second battery case and bulging downward. A hole portion for accommodating the fastening portion is provided on an upper surface of the first battery case at a position overlapping the fastening portion when viewed from above.

Abstract: A battery pack includes a first battery module, a first battery case accommodating the first battery module, a second battery module, and a second battery case placed on an upper side of the first battery case so as to overlap each other and accommodating the second battery module. The second battery module is fixed to a fastening portion formed on a bottom surface of the second battery case and bulging downward. A hole portion for accommodating the fastening portion is provided on an upper surface of the first battery case at a position overlapping the fastening portion when viewed from above.

Abstract: A fuel cell stack includes a stacked body, a first insulator and a second insulator. The stacked body includes power generation cells. The power generation cells are stacked in a stacking direction. The power generation cells include a first end power generation cell a second end power generation cell. Each of the power generation cells includes a membrane electrode assembly, a cathode separator and an anode separator. The first end power generation cell has an outermost cathode separator. The second end power generation cell has an outermost anode separator. The first insulator has a first recess in which a first heat-insulating body and a first terminal plate are accommodated. The second insulator has a second recess in which a second heat-insulating body and a second terminal plate are accommodated. A first number of first stacked heat-insulating layers is larger than a second number of second stacked heat-insulating layers.

Abstract: A fuel cell stack includes a stacked body, a first insulator and a second insulator. The stacked body includes power generation cells. The power generation cells are stacked in a stacking direction. The power generation cells include a first end power generation cell a second end power generation cell. Each of the power generation cells includes a membrane electrode assembly, a cathode separator and an anode separator. The first end power generation cell has an outermost cathode separator. The second end power generation cell has an outermost anode separator. The first insulator has a first recess in which a first heat-insulating body and a first terminal plate are accommodated. The second insulator has a second recess in which a second heat-insulating body and a second terminal plate are accommodated. A first number of first stacked heat-insulating layers is larger than a second number of second stacked heat-insulating layers.

Abstract: A cell unit of a fuel cell includes a first membrane electrode assembly, a first metal separator, a second membrane electrode assembly, and a second metal separator. Resin frame members are provided at outer ends the first and second membrane electrode assemblies. A dual seal provided on the resin frame member includes an outer seal member and an inner seal member. A front end of the outer seal member contacts the resin frame member, and a front end of the inner seal member contacts the outer end of the first metal separator. The outer seal member and the outer seal member have the same height.

Abstract: An apparatus for selectively plating on an elongated metal strip, at intervals of a predetermined length in the lengthwise direction, while the strip is being fed in the lengthwise direction. The apparatus includes: strip feeder which discharges the strip from a reel in a direction in which the strip is fed and a sensor for detecting the amount of slack in the strip. A pre-treating station treats the strip, before being plated, while it is continuously fed. A plating station intermittently feeds the strip and selectively plates it, while the strip is stopped during its intermittent movement. An after-treating station treats the strip by again continuously feeding the strip and a strip take-up section winds the strip onto a reel after it has been treated. Tension mechanisms are disposed between the continuous feeding station and the intermittent feeding station to impart a predetermined tensile force to the strip.