CN220491929U - Solid fuel cell stack sealing structure - Google Patents

Abstract

The utility model discloses a sealing structure of a solid fuel cell stack, which is detachably arranged on a cell stack at the top, wherein a plurality of cell stacks are enclosed to form a hollow cylindrical structure, a cylindrical gas cylinder is arranged in an enclosed area, the sealing structure comprises a sealing cover which is of a stepped structure, a heat dissipation structure is arranged in the sealing cover, and a sealing ring is arranged at the connection position of the bottom of the sealing cover and the gas cylinder. The sealing structure has good sealing effect, and can timely guide out the high temperature generated by the cell stack, thereby avoiding influencing the use of the cell due to the high temperature.

Description

Solid fuel cell stack sealing structure

Technical Field

The utility model relates to the technical field of fuel cells, in particular to a sealing structure of a solid fuel cell stack.

Background

The solid oxide fuel cell consists of an anode, a cathode and an electrolyte, wherein the anode is fuel gas, a pipeline or a gas distribution plate is used for connecting and sealing gas supply, and the cathode is generally air or oxidizing gas containing air. For the cathode to take an open structure, the seal between the cathode inlet and outlet is important.

In the use process of the prior fuel cell stack after assembly, the high temperature generated by the cell stack easily causes the cell stack to expand, thereby causing incomplete sealing of the cell stack; if the generated high temperature cannot be discharged in time, the use of the battery is affected; to this end, we propose a solid fuel cell stack sealing structure.

Disclosure of Invention

The utility model mainly aims to provide a solid fuel cell stack sealing structure which is used for solving the technical problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a solid fuel cell pile seal structure, seal structure detachable installs on the battery pile at top, and a plurality of battery piles enclose and close and form hollow tubular structure, enclose and close the regional cylindricality gas cylinder that is equipped with that forms, seal structure includes the sealed cowling, the sealed cowling is ladder-type structure, be equipped with heat radiation structure in the sealed cowling, the bottom of sealed cowling is equipped with the sealing washer with the hookup location department of gas cylinder.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the heat dissipation structure comprises a first heat conduction column, and a plurality of second heat conduction columns are arranged on the first heat conduction column; the first heat conduction column is arranged in the sealing cover; the second heat conduction column penetrates through the sealing cover to extend to the cell stack, and a gap exists between the second heat conduction column and the cell stack.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the first heat conduction column and the second heat conduction column are made of copper materials.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: an insulating block is arranged on the cell stack at the top, and the sealing cover is connected with the insulating block through a screw.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: a heat insulation block is arranged between two adjacent battery stacks.

The beneficial effects of the utility model are as follows: the sealing structure has good sealing effect, and can timely guide out the high temperature generated by the cell stack, thereby avoiding influencing the use of the cell due to the high temperature; the working principle is as follows: when the cell stack expands at high temperature, the cell stack is contacted with the second heat conduction column, heat is transferred to the first heat conduction column through the second heat conduction column, the second heat conduction column is transferred to the outside air, and after heat dissipation is completed; the cell stack is restored to the original state, and the original gap is restored between the second heat conduction column and the cell stack; the sealing cover is connected with the top of the cell stack through a screw, is sealed firmly and has a stable structure.

Drawings

Fig. 1 is a schematic view of the overall structure of the present utility model.

Detailed Description

For the purposes of clarity, technical solutions and advantages of the present application, the technical solutions in the examples will be clearly and completely described below with reference to the drawings in the examples, however, the detailed description and examples described below are for the purpose of illustration only and not for the purpose of limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Referring to fig. 1 of the drawings, in the present embodiment, a solid fuel cell stack sealing structure is detachably mounted on a cell stack 2 at the top, a plurality of cell stacks 2 are enclosed to form a hollow cylindrical structure, a cylindrical gas cylinder 3 is arranged in an enclosed area, the sealing structure comprises a sealing cover 1, the sealing cover 1 is of a stepped structure, a heat dissipation structure is arranged in the sealing cover 1, and a sealing ring 10 is arranged at a connection position of the bottom of the sealing cover 1 and the gas cylinder 3.

Further, the heat dissipation structure comprises a first heat conduction column 4, and a plurality of second heat conduction columns 5 are arranged on the first heat conduction column 4; the first heat conduction column 4 is arranged in the sealed cover 1; the second heat conduction column 5 extends to the cell stack 2 through the sealing cover 1 and has a gap with the cell stack 2.

Preferably, the first and second heat conductive pillars 4 and 5 are each made of a copper material.

Further, an insulating block 7 is arranged on the cell stack 2 at the top, and the sealing cover 1 is connected with the insulating block 7 through a screw 6.

Further, a heat insulation block is arranged between two adjacent cell stacks.

The working principle of this embodiment is as follows: when the cell stack 2 expands at high temperature, the cell stack 2 is in contact with the second heat conduction column 5, heat is transferred to the first heat conduction column 4 through the second heat conduction column 5, the second heat conduction column 5 is transferred to the outside air, and after heat dissipation is completed; the cell stack 2 is restored to the original state, and the original gap is restored between the second heat conduction column 5 and the cell stack 2; the sealing cover 1 is connected with the top of the cell stack 2 through a screw 6, and is sealed firmly and structurally stable.

The above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (5)

1. A sealing structure of a solid fuel cell stack is detachably arranged on a cell stack at the top, a plurality of cell stacks are enclosed to form a hollow cylindrical structure, and a cylindrical gas cylinder is arranged in an enclosed area, and is characterized in that: the sealing structure comprises a sealing cover, the sealing cover is of a stepped structure, a heat dissipation structure is arranged in the sealing cover, and a sealing ring is arranged at the connection position of the bottom of the sealing cover and the gas cylinder.

2. A solid fuel cell stack sealing structure according to claim 1, wherein: the heat dissipation structure comprises a first heat conduction column, and a plurality of second heat conduction columns are arranged on the first heat conduction column; the first heat conduction column is arranged in the sealing cover; the second heat conduction column penetrates through the sealing cover to extend to the cell stack, and a gap exists between the second heat conduction column and the cell stack.

3. A solid fuel cell stack sealing structure according to claim 2, characterized in that: the first heat conduction column and the second heat conduction column are made of copper materials.

4. A solid fuel cell stack sealing structure according to claim 1, wherein: an insulating block is arranged on the cell stack at the top, and the sealing cover is connected with the insulating block through a screw.

5. A solid fuel cell stack sealing structure according to claim 1, wherein: a heat insulation block is arranged between two adjacent battery stacks.