RU159753U1 - FUEL CELL BATTERY - Google Patents

Abstract

1. The fuel cell battery, consisting of upper and lower collectors with internal channels connected to fittings for supplying and removing reagents, and rectangular bores with clips installed in them with current collectors applied to the outer parts of the holder and providing electrical connection of the clips to the battery, electrode chambers , channels for supplying and discharging reducing or oxidizing gaseous reagents and rectangular bores with rectangular fuel cells containing a thin layer solid electrolyte with electrode coatings on opposite sides, characterized in that the rectangular fuel cells are assembled in pairs using triangular side walls into triangular assemblies so that the inner electrode coating of the upper fuel cell is connected to the outer electrode coating of the lower fuel cell, the assembly of rectangular fuel cells the forms are installed in the bores of the clips so that the outer electrode coating of the upper fuel cell is connected to the current collector of the portion of the clip adjacent to the top , and the inner electrode coating of the lower fuel cell is connected to the current collector of the part of the holder adjacent to the bottom. 2. The battery according to claim 1, characterized in that the rectangular fuel cell assemblies are located on opposite sides of the cartridge with offset and gaps between them so that in the battery the fuel cell assembly of one cartridge are located in between the assemblies of adjacent clips. 3. The battery according to claim 1, characterized in that the angle of the fuel cells in the assembly α is 15 ÷ 45 °.

Description

Technical field

The claimed utility model relates to energy and can be used in the development of efficient power plants based on high-temperature solid oxide fuel cells (SOFC).

State of the art

The technical solution for the design of SOFCs is known from the prior art (see, for example, RF patent No. 2290726 for an invention, publ.), In which the battery consists of a stack of alternating plates with rectangular fuel cells located in holders of a complex profile and gas separation plates flows with through holes for supplying and removing reagents through channels formed by a combination of plates.

The disadvantages of the technical solution are the low volume density of the power, the complex configuration of the plates, the presence of a significant number of heterogeneous parts, which complicates the design and reduces the service life.

The technical solution is known from the prior art (see Pat. RF No. 2084053 for an invention, publ. 12/27/2006), according to which a fuel cell battery consists of fuel cells containing a thin-layer solid electrolyte with electrode coatings on opposite sides inserted into a ferrule with a bore covering the fuel cell, with current collectors and electrode chambers, channels for supplying and discharging reducing or oxidizing gaseous reagents.

The disadvantages of the technical solution are the impossibility of ensuring the same current density and uniform supply of reagents over the entire surface of the fuel cells at an arbitrary size, which reduces the efficiency of the battery, and the difficulty of ensuring a uniform temperature field of the fuel cells, which can lead to warping of the fuel cells and their failure.

The prior art knows the technical solution, which is the closest - a prototype (see RF patent No. 147533 for a utility model, publ. 10.11.2014), according to which the fuel cell battery consists of upper and lower collectors with internal channels connected to the fittings supply and removal of reagents, and rectangular bores for fuel cells with clips installed in them with current collectors deposited on the outer sides of the clip and providing electrical connection of the clips to the battery, electrode chambers, channel laminates for supplying and discharging reducing or oxidizing gaseous reagents and bores with rectangular fuel cells installed in them, containing a thin-layer solid electrolyte with electrode coatings on opposite sides.

The disadvantages of the technical solution are the reduced specific characteristics that arise due to excess masses and sizes of clips and the limited surface of the fuel cells per unit volume of the battery.

Utility Model Disclosure

The technical result of the claimed utility model is to reduce the mass of the clips by reducing their number and increasing the number of fuel cells, which leads to a decrease in mass and an increase in battery power in general, which together leads to a significant increase in the specific power of the claimed battery of fuel cells.

The technical result is achieved in that the fuel cell battery consists of an upper and lower collector with internal channels connected to the fittings for supplying and removing reagents, and rectangular bores with clips installed in them with current collectors applied to the outer parts of the holder and providing electrical connection of the clips to the battery , electrode chambers, channels for supplying and discharging reducing or oxidizing gaseous reactants and rectangular bores with fuel cells directly carbon form, containing a thin layer of solid electrolyte with electrode coatings on opposite sides, while the rectangular fuel cells are assembled in pairs using triangular side walls into triangular assemblies so that the inner electrode coating of the upper fuel cell is connected to the outer electrode coating of the lower fuel cell, fuel assemblies cells of a rectangular shape are installed in the bores of the clips so that the outer electrode coating of the upper fuel cell is connected to the current collector at ayuschey top portion of the cage and the inner bottom electrode coating fuel cell current collector is connected to the adjacent bottom portion of the cage.

In a preferred embodiment, the fuel cell assemblies of a rectangular shape are located on opposite sides of the cage with offset and gaps between them so that in the battery assembly of the fuel cells of one cage are located between the assemblies of adjacent cages, and the angle of the fuel cells in the assembly α is 15 ÷ 45 °.

Brief Description of the Drawings

The features and essence of the claimed utility model are explained in the following detailed description, illustrated by drawings, where the following is shown.

In FIG. 1 shows a front view of the claimed fuel cell battery, where:

1 - clip;

1a - right extreme clip;

1b - left extreme clip;

2 - upper collector;

3 - lower collector;

4 - connection for the supply and removal of reagents;

5 - assembly of fuel cells;

5a - the upper assembly of the fuel cells;

5b - lower assembly of fuel cells.

In FIG. 2 shows a top view of the lower manifold.

In FIG. Figures 3 and 4 show sections of the lower collector along A-A and B-B, where:

6 - the internal channel of the collector;

7 - boring of the lower collector.

In FIG. Figure 5 shows a cage with fuel cell assemblies.

In FIG. Figures 6 and 7 show the sections of the clip along BB and GG, where:

8 - a fuel cell;

8a - upper fuel cell;

8b - lower fuel cell;

9 - electrode chamber;

10 - channels of supply and removal of reagents;

11 - current leads;

11a - upper current lead;

11b - lower current lead;

In FIG. Figure 8 shows the assembly of fuel cells, where:

12 - electrode coatings of the fuel cell;

12a - inner electrode coating of the fuel cell;

12b - external electrode coating of the fuel cell;

13 is a side wall of the fuel cell assembly.

In FIG. 9 and 10 are views of the E and D assemblies of fuel cells.

In FIG. 11 shows a break from FIG. 6 (G), explaining the switching of the fuel cell assemblies in the clip.

Utility Model Implementation

The battery of fuel cells (see Fig. 1) consists of a set of clips 1 installed between the upper 2 and lower 3 collectors having a fitting 4 for supplying and removing reagents. In the clips 1, assemblies of 5 fuel cells are installed 8. The upper 2 and lower 3 collectors have an internal channel 6 and bores 7 (see Fig. 2-4). The clips 1 are installed in the bores 7 of the upper 2 and lower 3 collectors.

Assemblies 5 of fuel cells 8, consisting of two fuel cells 8 (upper 8a and lower 8b), are installed in a holder 1, forming a serial current connection from the upper 11a to lower 11b of the current leads 11 (see Figs. 5-7, 11). The internal space of the assembly of 5 fuel cells 8 is connected through the electrode chamber 9 to the channels for supplying and removing reagents 10 of the holder 1. Assembly of 5 fuel cells 8 with a solution angle α of the fuel cells 15 ÷ 45 ° with electrode coatings 12 (see Fig. 8-10) has two side walls 13, which together with two fuel cells 8 form the internal space of the assembly 5. The assemblies 5 of the fuel cells 8 are located on the opposite sides of the cage with offset and gaps between them (see Fig. 6) so that in the battery assembly 5 fuel cells 8 of one clip 1 are located intervals between adjacent yokes assemblies 1 (see. FIG. 1). To ensure that there is no large gap between the upper 5a and lower 5b assemblies 5 of the fuel cells 8 and the upper 2 and lower 3 collectors that violates the uniformity of the reagent flow, the surface of the collectors 2 and 3 between the bores 7 (see Fig. 3) is inclined 7.5-22.5 ° from the horizontal corresponding to the slope of the fuel cells 8. The rightmost 1a and leftmost 1b clips 1 in the battery (see Fig. 1) are made with blank external walls, which together with the collectors 2 and 3 form an outer casing batteries.

The electrical switching of the assemblies in the cage 1 is carried out as follows: the outer electrode coating 12b of the upper fuel cell 8a (see Fig. 11) is connected to the top-mounted current supply 11 of the cage 1, and the inner electrode coating 12a of the lower fuel cell 8b is connected to the underlying current supply 11 of the cage 1 .

The claimed fuel cell battery operates as follows.

Oxidizing and reducing reagents are fed one through the inlet fitting 4, the inner channel 6 of the lower collector 3, the inlet channel 10 of the holder 1 and the electrode chambers 9 into the inner space of the assembly 5 to the inner electrode coatings 12a of the fuel cells 8, and the second reagent, feeding perpendicular to the front surface of the battery washes clips 1 and assemblies 5 of fuel cells 8 from the outside, responding to external electrode coatings 12b of fuel cells 8. The resulting voltage of the series-connected fuel cells 8 is removed current leads 11a and 11b from the lower and upper sides of the holder 1 and is removed from the battery to the consumer. The reaction products are discharged through the exhaust channels 10 into the internal channel 6 of the upper collector 2.

Optimization of the design parameters of the battery showed that the maximum volumetric power density is achieved at a solution angle of fuel cells in the assembly of 15 ± 45 °.

Thus, the claimed battery of fuel cells has a reduced mass of clips due to a decrease in their number and an increase in the number of fuel cells, which leads to a decrease in mass and an increase in battery power as a whole, which together leads to a significant increase in the specific power of the claimed battery of fuel cells.

Claims (3)

1. The fuel cell battery, consisting of upper and lower collectors with internal channels connected to fittings for supplying and removing reagents, and rectangular bores with clips installed in them with current collectors applied to the outer parts of the holder and providing electrical connection of the clips to the battery, electrode chambers , channels for supplying and discharging reducing or oxidizing gaseous reagents and rectangular bores with rectangular fuel cells containing a thin layer solid electrolyte with electrode coatings on opposite sides, characterized in that the rectangular fuel cells are assembled in pairs using triangular side walls into triangular assemblies so that the inner electrode coating of the upper fuel cell is connected to the outer electrode coating of the lower fuel cell, the assembly of rectangular fuel cells the forms are installed in the bores of the clips so that the outer electrode coating of the upper fuel cell is connected to the current collector of the portion of the clip adjacent to the top and the inner electrode coating of the lower fuel cell is connected to the current collector of the portion of the holder adjacent to the bottom. 2. The battery according to claim 1, characterized in that the rectangular fuel cell assemblies are located on opposite sides of the cage with offset and gaps between them so that in the battery the fuel cell assembly of one cage is located between the assemblies of adjacent cages. 3. The battery under item 1, characterized in that the angle of the fuel cells in the assembly α is 15 ÷ 45 °.

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