JPH04127965U - shielded fuel cell - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a shielded fuel cell that reduces the weight of the fuel cell, suppresses leakage of reactant gas, etc., and has excellent sealing performance. [Configuration] An inlet and an outlet for hydrogen, which is a reactive gas,
an inlet and an outlet for oxygen, which is a reactive gas; a manifold that communicates with the inlet and outlet of each of the reactive gases;
The battery stack has a structure in which the battery stack is housed in an integrated frame.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a cell structure used in, for example, a phosphoric acid fuel cell. , relates to a shielded fuel cell suitable for hydrogen/oxygen fuel cells.

0002

[Conventional technology]

This type of fuel cell is, for example, a cell that causes an electrode reaction, as shown in FIG. The top and bottom of the laminate 21 are tightened by pressure plates 22, tie rods 23, and tie bars 24. It is held and fixed by a fitting structure. These parts are made of metal In this case, the total weight of the battery increases, making it difficult to handle.

0003 In addition, a manifold 25 that distributes hydrogen and air is attached to the end face of the upper and lower pressure contact plates 22. is attached. For this reason, the number of these parts increases, and the mounting parts There was a problem in that the product was heavy and required effort to install.

0004 In such a battery structure, a metal tie bar 24 is used. If used, the weight of this part increases and installation is difficult. Also, ma When trying to install the Nifold with bolt 26, it is necessary to , a large number of bolts 26 are required. This also increases the weight of the device. .

[0005] On the other hand, in the conventional battery structure, the tie bar 24 and tie rod 23 are attached to the pressure plate. Since the structure is such that the tie rods 23 and the battery stack 21 are tightened together, A space is created between the manifold 25 and the tie rod 23, and the battery space is This results in waste.

[0006] Furthermore, as mentioned above, the number of parts increases, so the battery manufacturing process The costs associated with this will be high.

[0007]

[Problem that the idea aims to solve]

The present invention was devised in view of the above problems, and aims to reduce the weight of this type of fuel cell. We proposed a shielded fuel cell that suppresses the leakage of reactant gases and has excellent airtightness. It is something that

[0008]

[Means to solve the problem]

The shielded fuel cell of the present invention has an inlet and an outlet for hydrogen, which is a reactive gas, and An inlet and an outlet for oxygen, which is a reactive gas, and an inlet and an outlet for each of the reactive gases. a manifold portion communicating with the battery stack, and a battery stack integrated into the frame. It is characterized by being stored inside the body.

[0009] Further, the integral frame body may be configured to also serve as a manifold portion.

0010

[Effect]

As in the present invention, the inlet and outlet portions of hydrogen, which is a reactive gas, and acid, which is a reactive gas, are connected to each other. a manifold communicating with the inlet and outlet of the reactant gas and the inlet and outlet of each of the reactant gases; - a fuel cell having a shield part and a battery stack, wherein the battery stack is made of resin; It is housed in an integrated frame made of a composite material of resin and metal, so it does not react easily. Tie bars and tie rods are placed around the battery stack to suppress gas leakage. , it is possible to omit pressure plates, etc., and the total weight of the fuel cell can be reduced.

[0011] The integrated frame body has not only a battery clamping structure but also a fuel reaction structure. If the manifold part that distributes gas is also used, the volume of the battery can be reduced. Also, no protrusions are formed on the outside of the battery, making it more compact. This is advantageous and can be easily arranged with other devices.

0012

【Example】

Examples of the present invention will be described in detail below. Figure 1 shows the shield type fuel according to the present invention. FIG. 2 is an overall perspective view of a rechargeable battery. Here, 1 is a battery laminate, which is assembled into an integral frame. 2 surrounds and seals it. Although not particularly shown, this includes phosphorus, which is an electrolyte. There is an electrolyte management mechanism that stores acid and replaces fluids. Also, 3A is the positive electrode Output terminal part, 3B is the output terminal part of the negative electrode, 4A is the inlet part for hydrogen which is a reaction gas, 4 B is the outlet after combustion of hydrogen, which is a reaction gas, and 5A is an outlet of air containing oxygen, which is a reaction gas. The inlet section 5B is the outlet section after combustion of the oxygen-containing reaction gas air.

[0013] Next, a sectional view of this battery taken along the line XX in FIG. 1 is shown in FIG. 2. Here the integral formwork The body 2 presses and fixes the current collecting plates 7, 7 and the battery stack 1 through the absorbers 6, 6. I can see what it looks like.

[0014] Further, a YY cross-sectional view of this battery in FIG. 1 is shown in FIG. Here, the above The battery stack 1 and the integral frame 2 constitute a hydrogen and air separation section 10, and the gas Separation is being carried out. 8A is the hydrogen inlet side manifold part, and 8B is the hydrogen inlet side manifold part. The outlet side manifold part, 9A is the air inlet side manifold part, and 9B is the air outlet side manifold part. The two-fold portions are shown respectively, and are constituted by the integral frame body 2. That is understood. The hydrogen inlet side manifold part 8A is a hydrogen inlet part. 4A, the hydrogen outlet side manifold part 8B connects the air inlet to the hydrogen outlet part 4B. The mouth side manifold part 9A is connected to the air inlet part 5A, and the air outlet side manifold part 9A is connected to the air inlet part 5A. 9B are in communication with the air outlet section 5B, respectively.

[0015] Resin materials suitable for the integral frame body 2 used here include ABS resin, Polyethylene, polyamide, polyimide, polyimide amide, polyether ether It is desirable to use a resin material mixed with terketone or glass fiber. stomach. Moreover, as a material for the integral frame body 2, a metal 1 as shown in the cross-sectional view of FIG. It is preferable to use a composite material consisting of 1 and resin 12 in areas that require high strength. Yes.

[0016] The one shown in the above example is an integrally molded type made of resin etc., but other An example of this is a bonding type as shown in FIG. In Figure 5 , the difference from the above embodiment is that the frame body is composed of split frame bodies 13 and 14 which are joined together. , except that it constitutes an integral frame body, and the other parts are the same as those of the previous embodiment.

[0017] According to this invention, the frame body has both a tightening structure and a manifold structure. This can contribute to the miniaturization of batteries. In addition, the integral frame body can be made of resin, etc. Since it can be made from lightweight materials, the total weight of the battery can be reduced and the amount of metal parts used can be reduced. The acid-resistant surface treatment such as Teflon coating can be omitted. Furthermore, since an integrated frame body is used, leakage of gas to the outside of the battery can be suppressed. Therefore, the safety and reliability of the battery can be improved.

[0018]

[Effect of the idea]

As mentioned above, according to the shielded fuel cell of the present invention, it is possible to reduce the weight of the fuel cell. As a result, it is possible to provide a fuel cell with excellent airtightness that suppresses leakage of reactant gases, etc., and its industrial value is high. The value is extremely large.

[Brief explanation of drawings]

FIG. 1 shows a perspective view of the battery of the present invention.

FIG. 2 shows a sectional view taken along line XX in FIG. 1.

FIG. 3 shows a YY cross-sectional view of FIG. 1.

FIG. 4 shows a cross-sectional view of the composite material.

FIG. 5 shows a perspective view of a battery showing another embodiment of the present invention.

FIG. 6 shows a perspective view of a battery representing a conventional battery structure.

[Explanation of symbols]

1, 21 Battery laminate 2 Integrated frame 3A positive output terminal section 3B Negative output terminal section 4A Hydrogen inlet 4B Hydrogen outlet 5A Air inlet 5B Air outlet 6 Absorber 7 Current collector plate 8A Hydrogen inlet side manifold part 8B Hydrogen outlet side manifold part 9A Air inlet side manifold part 9B Air outlet side manifold part 10 Separation part 11 Metal 12 Resin 13, 14 Separation frame body 22 Pressure plate 23 Tie rod 24 Tie bar 25 Manifold 26 volts

Claims (2)

[Scope of utility model registration request] 1. An inlet and an outlet for hydrogen as a reactive gas, an inlet and an outlet for oxygen as a reactive gas, and a manifold communicating with the inlet and outlet for each of the reactive gases; What is claimed is: 1. A shielded fuel cell comprising a battery stack, the battery stack being housed in an integrated frame. 2. The shielded fuel cell according to claim 1, wherein the integral frame also serves as a manifold portion.