JPH0160905B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a fuel cell, and particularly to a fuel cell that is highly safe against vibrations.

[Prior art]

Figure 1 shows the structure of a conventional fuel cell.

In FIG. 1, a stacked battery 1 is attached to an upper clamping fitting 2
The pair of upper and lower clamping brackets 2 and 3 are clamped by a clamping rod 4 that passes through each of them. A manifold 5 for supplying raw material gas to the stacked battery 1 is disposed on a side surface of the stacked battery 1 to form a battery body 6. This battery body 6 is housed in a storage tank 7, and this storage tank 7 and the battery body 6 are each independently fixed to a base 8.

In the conventional fuel cell constructed in this way, since the stacked battery 1 is a laminate, it is tightly tightened by the upper clamping fitting 2, the lower clamping fitting 3, and the tightening rod 4. However, when a horizontal load is applied due to horizontal acceleration such as shock from transportation or earthquake vibrations, shearing force and bending moment are generated, which may cause misalignment between the layers of the stacked battery 1 or cracks in the stacked materials. However, the drawback was that the battery performance deteriorated or the battery became unusable.

[Purpose of the invention]

The present invention has been made in view of the above points, and an object thereof is to provide a fuel cell with excellent vibration resistance.

[Summary of the invention]

The present invention includes a plurality of tightening rods that are used to tighten upper and lower clamping fittings arranged above and below the main body of a fuel cell housed in a tank so as to sandwich the main body of the fuel cell. The intended purpose is achieved by providing pressure holding members that press downward and horizontally between the top and side surfaces of the fitting and the inner surface of the tank facing them, respectively. .

[Embodiments of the invention]

An embodiment of the fuel cell according to the present invention will be described below with reference to the drawings.

FIG. 2 shows an embodiment of the present invention, and the same parts as in the conventional example are designated by the same numbers.

In FIG. 2, between the battery body 6 and the storage tank 7 that houses the battery body 6, a metal bellows 9 serving as a pressure holding member is provided in the vertically downward direction at the center of the upper lid, and the upper surface of the upper fastener 2 They fit into the cylindrical retainer 10 formed in the upper clamping bracket 2, and four fixtures are provided, one each on each of the four sides of the upper fastening bracket 2. This metal bellows 9 is adapted to be adjusted by applying a pressure higher than the gas pressure in the storage tank 7. A piping 11 for applying this pressure is fixedly installed in the storage tank, and one end of the piping 11 protrudes outside the base 8 so that pressure can be applied and adjusted from the outside. With this configuration, the storage tank 7 can support the horizontal load that is applied to the battery main body 6 during transportation or during an earthquake. As a result, it is possible to prevent misalignment between the layers of the laminated battery 1 and cracking of the laminated materials, and it is possible to improve earthquake resistance. Further, when assembling the battery, after covering the battery body 6 with the storage tank 7, the bellows 9 is pressurized from the outside through the piping 11.
can be fixed, making work easier.

Similar effects can be obtained by using a cylinder that utilizes gas pressure instead of the metal bellows.

〔Effect of the invention〕

As described above, according to the present invention, by providing a bellows or a cylinder between the battery body and the storage tank to prevent vibration of the battery body, the horizontal load acting on the battery body can be reduced. Furthermore, the battery assembly has become easier and can be completed in a shorter time, which has a great effect.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view showing a schematic configuration of a conventional fuel cell, and FIG. 2 is a vertical cross-sectional view showing a schematic configuration of an embodiment of a fuel cell according to the present invention. DESCRIPTION OF SYMBOLS 1...Stacked battery, 2...Upper clamping bracket, 3...Lower clamping bracket, 4...Tightening rod, 5...Manifold, 6
...Battery body, 7...Storage tank, 8...Base, 9...
Bellows, 10... Cylindrical catch, 11... Piping.

Claims (1)

[Claims] 1. A stacked battery formed by stacking a plurality of unit cells vertically, a manifold for supplying raw material gas to the stacked battery, and an upper and lower clamping bracket disposed at the upper and lower parts of the stacked battery, respectively. , a plurality of tightening rods passing through these upper and lower clamping fittings and applying force to clamp the stacked battery to these tightening fittings, and the fuel cell is housed in a tank. , a pressure holding member interposed between the upper surface of the upper fastening fitting and the inner surface of the upper part of the tank and pressing the upper tightening fitting downward; and a side part of the upper tightening fitting and the inner surface of the tank side part. and a plurality of pressurizing and holding members that horizontally press the upper fastening metal fitting interposed between the fuel cell and the fuel cell.