초록 ▼

Disclosed is a solid oxide fuel cell bundle, including a plurality of fuel cells each having a polygonal tubular support an outer surface of which has a plurality of planes, an outer connector formed on one plane among the plurality of planes of the tubular support, a plurality of unit cells respect

Disclosed is a solid oxide fuel cell bundle, including a plurality of fuel cells each having a polygonal tubular support an outer surface of which has a plurality of planes, an outer connector formed on one plane among the plurality of planes of the tubular support, a plurality of unit cells respectively formed on two or more remaining planes of the tubular support except for the one plane, and inner connectors for connecting the unit cells and the outer connector in series, wherein the fuel cells is connected in series in such a manner that the outer connector of a fuel cell is bonded to the unit cell of an additional fuel cell, and the unit cells are connected in series, thus exhibiting excellent cell performance and high power density per unit volume, and maintaining high voltage upon collection of current to thereby reduce power loss due to electrical resistance.

대표청구항 ▼

1. A solid oxide fuel cell, comprising: a polygonal tubular support an outer surface of which has a plurality of planes;an outer connector formed on one plane of the tubular support among the plurality of planes of the tubular support;a plurality of unit cells respectively formed on two or more rema

1. A solid oxide fuel cell, comprising: a polygonal tubular support an outer surface of which has a plurality of planes;an outer connector formed on one plane of the tubular support among the plurality of planes of the tubular support;a plurality of unit cells respectively formed on two or more remaining planes of the tubular support except for the one plane of the tubular support; andinner connectors for connecting the plurality of unit cells and the outer connector in series,wherein each of the plurality of unit cells comprises a first electrode, an electrolyte and a second electrode formed in sequential order on the two or more remaining planes of the tubular support except for edges of the tubular support, andthe inner connectors are formed at remaining edges of the tubular support except for an edge of the tubular support between one end of the outer connector and one end of the unit cell adjacent to the one end of the outer connector, so as to connect one end of the first electrode and one end of the second electrode adjacent to the one end of the first electrode to each other, and the one end of the first electrode and the other end of the outer connector to each other. 2. The solid oxide fuel cell as set forth in claim 1, wherein, in order to cover a lateral surface of the other end of the first electrode, an end of the electrolyte corresponding thereto extends toward the tubular support, and the one end of the second electrode extends toward the tubular support so that the extending end of the electrolyte is covered therewith. 3. The solid oxide fuel cell as set forth in claim 1, wherein each of the inner connectors is isolated from the other end of the second electrode. 4. The solid oxide fuel cell as set forth in claim 1, wherein the first electrode is an anode, and the second electrode is a cathode. 5. The solid oxide fuel cell as set forth in claim 1, wherein the first electrode is a cathode, and the second electrode is an anode. 6. The solid oxide fuel cell as set forth in claim 1, wherein the tubular support is formed of a material being porous and having insulating properties. 7. The solid oxide fuel cell as set forth in claim 1, wherein the tubular support is formed of an alumina-based ceramic material. 8. A solid oxide fuel cell bundle, comprising: a plurality of fuel cells, each of which comprises a polygonal tubular support an outer surface of which has a plurality of planes, an outer connector formed on one plane of the tubular support among the plurality of planes of the tubular support, a plurality of unit cells respectively formed on two or more remaining planes of the tubular support except for the one plane of the tubular support, and inner connectors for connecting the plurality of unit cells and the outer connector in series,wherein the plurality of fuel cells is connected in series in a manner such that the outer connector of a fuel cell is bonded to a unit cell of an additional fuel cell,wherein each of the plurality of unit cells comprises a first electrode, an electrolyte and a second electrode formed in sequential order on the two or more remaining planes the tubular support except for edges of the tubular support, andthe inner connectors are formed at remaining edges of the tubular support except for an edge of the tubular support between one end of the outer connector and one end of the unit cell adjacent to the one end of the outer connector and one end of the unit cell adjacent to the one end of the outer connector, so as to connect one end of the first electrode and one end of the second electrode adjacent to the one end of the first electrode to each other, and the one end of the first electrode and the other end of the outer connector to each other. 9. The solid oxide fuel cell bundle as set forth in claim 8, wherein, in order to cover a lateral surface of the other end of the first electrode, an end of the electrolyte corresponding thereto extends toward the tubular support, and the one end of the second electrode extends toward the tubular support so that the extending end of the electrolyte is covered therewith. 10. The solid oxide fuel cell bundle as set forth in claim 8, wherein each of the inner connectors is isolated from the other end of the second electrode. 11. The solid oxide fuel cell bundle as set forth in claim 8, wherein the first electrode is an anode, and the second electrode is a cathode. 12. The solid oxide fuel cell bundle as set forth in claim 8, wherein the first electrode is a cathode, and the second electrode is an anode. 13. The solid oxide fuel cell bundle as set forth in claim 8, wherein the tubular support is a hexagonal tubular support an outer surface of which has six planes, the plurality of unit cells is respectively formed on five remaining planes of the tubular support, andthe plurality of fuel cells comprises a plurality of first fuel cells each of which has an outer connector formed in a counterclockwise direction of the edge of the tubular support and a plurality of second fuel cells each of which has an outer connector formed in a clockwise direction of the edge of the tubular support, and the plurality of fuel cells is stacked in two layers by continuously performing bonding between the outer connector of a first fuel cell and the unit cell formed in a counterclockwise direction of the edge of a second fuel cell and bonding between the outer connector of the second fuel cell and the unit cell formed in a clockwise direction of the edge of an additional first fuel cell. 14. The solid oxide fuel cell bundle as set forth in claim 8, wherein the tubular support is a triangular tubular support an outer surface of which has three planes, the plurality of unit cells is respectively formed on two remaining planes of the tubular support, andthe plurality of fuel cells comprises a plurality of first fuel cells each of which has an outer connector formed in a counterclockwise direction of the edge of the tubular support and a plurality of second fuel cells each of which has an outer connector formed in a clockwise direction of the edge of the tubular support, and the plurality of fuel cells is stacked in one layer by continuously performing bonding between the outer connector of a first fuel cell and the unit cell formed in a counterclockwise direction of the edge of a second fuel cell and bonding between the outer connector of the second fuel cell and the unit cell formed in a clockwise direction of the edge of an additional first fuel cell. 15. The solid oxide fuel cell bundle as set forth in claim 8, wherein the outer connector of the fuel cell is bonded to the unit cell of the additional fuel cell using metal foam, metal felt or metal paste. 16. The solid oxide fuel cell bundle as set forth in claim 8, wherein angles between the planes forming the edges of the tubular support are equal to each other. 17. A solid oxide fuel cell bundle, comprising: a plurality of fuel cells, each of which comprises a polygonal tubular support an outer surface of which has a plurality of planes, an outer connector formed on one plane of the tubular support among the plurality of planes of the tubular support, a plurality of unit cells respectively formed on two or more remaining planes of the tubular support except for the one plane of the tubular support, and inner connectors for connecting the plurality of unit cells and the outer connector in series,wherein the plurality of fuel cells is connected in series in a manner such that the outer connector of a fuel cell is bonded to a unit cell of an additional fuel cell, wherein the tubular support has an outer surface having N planes in which N is an even number of 6 or more, the outer connector is formed on one plane of the tubular support among the N planes of the tubular support,(N+2)/2 unit cells are respectively formed on (N+2)/2 remaining planes of the tubular support continuously arranged in one direction from the one plane of the tubular support,the inner connectors are used so as to connect the unit cells and the outer connector in series,N fuel cells each of which comprises the tubular support, the outer connector and the inner connectors are provided, andbonding between the outer connector of a fuel cell and the unit cell formed on a [(N+2)/2]th remaining plane in one direction from one plane of an additional fuel cell is continuously performed N−1 times so that the N fuel cells are connected in series, in order to form a tubular hollow defined by the N fuel cells,wherein each of the (N+2)/2 unit cells comprises a first electrode, an electrolyte and a second electrode formed in sequential order on the (N+2)/2 remaining planes of the tubular support except for edges of the tubular support, andthe inner connectors are used to connect one end of the first electrode and one end of the second electrode adjacent to the one end of the first electrode, which are formed at both sides of each of edges of the tubular support between the (N+2)/2 remaining planes on which the unit cells are formed, to each other, and to connect the one end of the first electrode to one end of the outer connector adjacent to the one end of the first electrode, which are formed at both sides of the edge of the tubular support between the one plane of the tubular support and the remaining plane adjacent to the one plane in one direction, to each other.