Stack for a solid oxide fuel cell using a flat tubular structure
First Claim
1. A method for manufacturing a solid oxide fuel cell stack, the method comprising the steps of:
- manufacturing a unit cell module comprising at least one unit cell formed on the outer surfaces of a flat tubular porous support and having a first gas channel inside of the tubular support and a second gas channel outside of the tubular support, a first electrical interconnector coated on the front end of the support and at least a portion of the outer surfaces so as to be connected to a first electrode of the unit cell, and a second electrical interconnector coated on the rear end of the support and at least a portion of the outer surfaces so as to be connected to a second electrode of the unit cell; and
stacking the unit cell modules such that the electrical interconnectors come into contact with each other;
wherein first gas channels are formed in the flat tubular support, second gas channels and unit cells are formed at the central portions of the outer surfaces of the flat tubular support, and the electrical interconnectors are formed on both side edges of the outer surfaces of the flat tubular support; and
wherein the central portions of the outer surfaces of the support are grooved to a predetermined depth, and the grooved supports are stacked to form second gas channels.
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Accused Products
Abstract
The preset invention relates to a solid oxide fuel cell stack capable of producing electricity, in which unit cell modules are connected in series and in parallel, and to a manufacturing method thereof. The solid oxide fuel cell stack is manufactured by: making a unit cell module comprising at least one unit cell formed on the outer surfaces of a flat tubular support, a first electrical interconnector formed on the front end of the support and at least a portion of the outer surfaces so as to be connected to a first electrode of the unit cell, and a second electrical interconnector formed on the rear end of the support and at least a portion of the outer surfaces so as to be connected to a second electrode of the unit cell; and stacking the unit cell modules such that the electrical interconnectors come into contact with each other.
13 Citations
20 Claims
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1. A method for manufacturing a solid oxide fuel cell stack, the method comprising the steps of:
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manufacturing a unit cell module comprising at least one unit cell formed on the outer surfaces of a flat tubular porous support and having a first gas channel inside of the tubular support and a second gas channel outside of the tubular support, a first electrical interconnector coated on the front end of the support and at least a portion of the outer surfaces so as to be connected to a first electrode of the unit cell, and a second electrical interconnector coated on the rear end of the support and at least a portion of the outer surfaces so as to be connected to a second electrode of the unit cell; and stacking the unit cell modules such that the electrical interconnectors come into contact with each other; wherein first gas channels are formed in the flat tubular support, second gas channels and unit cells are formed at the central portions of the outer surfaces of the flat tubular support, and the electrical interconnectors are formed on both side edges of the outer surfaces of the flat tubular support; and wherein the central portions of the outer surfaces of the support are grooved to a predetermined depth, and the grooved supports are stacked to form second gas channels. - View Dependent Claims (2, 3, 4)
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5. A method for manufacturing a solid oxide fuel cell stack that generates electricity by an electrochemical oxidation reaction by supplying fuel gas and air thereto, the method comprising the steps of:
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grooving the central portions of the outer surfaces of a porous flat tubular structure including a plurality of internal channels for a first gas flow, excluding both side edges of the outer surfaces, to a predetermined depth, thereby manufacturing a support that provides external channels for a second gas flow when a plurality of the supports are stacked on each other; forming a plurality of unit cells including a first gas electrode layer, an electrolyte layer, and a second gas electrode layer on the surfaces of the central portions of the support, on which the second gas channels were formed, the unit cells being spaced apart from each other at a predetermined interval in a lengthwise direction, and then connecting the different poles of the unit cells to each other by an electrical interconnector, and connecting the first gas electrode layer and the second gas electrode layer, exposed at both opposite ends, to electrical interconnectors which coat both ends of the support and the side edges of the outer surfaces of the support, thereby manufacturing a unit cell module; and stacking the unit cell modules vertically or vertically and horizontally to manufacture a unit stack module, and stacking the unit stack modules, thereby manufacturing a two-dimensional or three-dimensional stack. - View Dependent Claims (6, 7, 8, 9, 10)
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11. A solid oxide fuel cell stack in which unit cell modules are stacked, the unit cell module comprising:
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a flat tubular porous support having internal channels and grooves formed to a predetermined depth at the central portions of the outer surfaces of the support, wherein the internal channels serve as first gas channels and the grooves serve as second gas channels; at least one unit cell formed on the second gas channel and consisting of a first electrode layer, an electrolyte layer and a second electrode layer; a first electrical interconnector formed on the front end of the support and on one side edge of the outer surfaces so as to be connected to the first electrode; and a second electrical interconnector formed on the rear end of the support and on the other side edge of the outer surfaces so as to be connected to the second electrode. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification