JPS6335070B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fuel cell, and particularly to a fuel cell that is highly safe against vibrations.

FIG. 1 shows a vertical cross section of a conventionally commonly used fuel cell, in which a battery main body 1 includes a stacked battery 5 fastened by an upper fastener 2, a lower fastener 3, and a fastening rod 4. It consists of a manifold 6 that is attached to the side surface of the stacked battery and supplies and distributes raw material gas to the stacked battery. This battery body 1 is fixed to a base 7 and is covered by a storage tank 8. Further, this storage tank 8 is also fixed to the base 7.

The fuel cell configured in this way has a stacked battery 5
is a laminate, and although it is firmly tightened by the upper fastener 2, lower fastener 3, and tightening rod 4, when a horizontal load is applied due to horizontal acceleration such as impact from transportation or earthquake vibration, the laminate will break. There were problems such as poor vibration resistance, such as shearing force and bending moment occurring in the parts, causing misalignment between the layers of the laminated battery 5, and cracks in the laminated members, resulting in decreased performance and unusability.

The present invention was conceived in view of this, and its object is to provide a fuel cell with excellent vibration resistance.

That is, the present invention provides a fuel cell having a battery main body consisting of a stacked battery and a manifold for supplying and distributing raw material gas to the stacked battery, and a tank housing the battery main body, in which a battery is placed between the battery main body and the tank. The main body is movable in the direction in which the battery bodies are stacked, and a support is provided to prevent the movement in a direction perpendicular to the direction in which the battery bodies are stacked, thereby achieving the intended purpose.

The present invention will be explained in detail below based on the illustrated embodiments.

FIG. 2 shows a longitudinal sectional view of a fuel cell according to one embodiment, and in the figure, parts that are the same as or corresponding to those in FIG. 1 are designated by the same reference numerals.

The difference between the fuel cells shown in FIG. 1 and FIG.
The point is that a support 9 consisting of the following is provided. That is, a rod-shaped protrusion 10 is provided vertically downward at the center of the tank top lid, a cylindrical retainer 11 into which the protrusion is loosely fitted is provided on the upper surface of the center of the upper fastener 2, and the protrusion 10 is loosely fitted into the retainer 11. It is fitted.

With this configuration, it is possible to insert the battery body 1 into the tank 8 as before, but it is also possible to insert the battery body 1 into the tank 8 in the horizontal direction, that is, the direction perpendicular to the stacking direction of the battery bodies, which is applied to the battery body 1 during transportation or earthquakes. For example, the results of experiments with the minimum loose fit gap (the loose fit gap allowed for machining) show that the shear force acting on the stacked battery 5 can be reduced by 1/2.
Second, we were able to reduce the bending moment to 1/4. With this structure, displacement between the layers of the laminated battery 5 and cracking of the laminated member can be prevented, and vibration resistance can be improved.

FIG. 3 shows another embodiment, in which a support 9 is provided on the side surface of the upper fastener 2. This support 9 has a small disk fixed to one end of a small rod, and the other end of the small rod is fixed to the side surface of the upper fastener 5. In this case, the outer end surface of the small disk is close to the inner surface of the tank. Incidentally, this support 9 may be provided on the manifold 6 as shown in FIG. By providing a support in this way, it is possible to improve the seismic resistance of the battery body as described above. Moreover, the present invention can also be used as a guide when attaching the storage tank to the battery main body, and has the effect of making the attaching work easier.

As explained above, the fuel cell of the present invention reduces the horizontal load acting on the cell main body by providing a support between the cell main body and the storage tank to prevent vibration of the cell main body, It is possible to obtain a fuel cell that is easy to tighten and assemble and has excellent earthquake resistance.

[Brief explanation of the drawing]

FIG. 1 is a schematic vertical cross-sectional configuration diagram of a conventional fuel cell, and FIGS. 2 to 4 are schematic vertical cross-sectional configuration diagrams of fuel cells according to embodiments of the present invention. DESCRIPTION OF SYMBOLS 1... Battery body, 5... Laminated battery, 6... Manifold, 7... Base, 8... Tank, 9... Support tool.

Claims (1)

[Claims] 1. In a fuel cell having a battery body consisting of a stacked battery and a manifold for supplying and distributing raw material gas to the stacked battery, and a tank housing the battery body, the battery body is located between the battery body and the tank. 1. A fuel cell characterized in that a support member is provided which is movable in the stacking direction of the main body and prevents the movement in a direction perpendicular to the stacking direction.