KR20150133390A - Fuel Cell System with Cooling Function - Google Patents

Abstract

The present invention relates to a fuel cell system with a cooling function. The fuel cell system with a cooling function comprises: a fuel cell stack module including a first fuel cell stack for generating electricity, and a first duct for supplying fuel to the first fuel cell stack; and a supply unit for supplying carrier gas to the fuel cell stack module to cool the fuel supplied to the fuel cell stack module. According to the present invention, it is possible to prevent durability from being reduced due to high temperature generated by an electrochemical reaction, thereby reducing costs for replacement and maintenance.

Description

[0001] Fuel cell system with cooling function [0002]

The present invention relates to a fuel cell system to which a cooling function for cooling a fuel cell is added.

A fuel cell (Feul Cell) is a high efficiency clean power generation technology that converts hydrogen contained in a hydrocarbon-based material such as natural gas, coal gas, and methanol and oxygen in an oxidant directly to electric energy through an electrochemical reaction. These fuel cells can be classified into two types depending on the type of electrolyte used: Alkaline Fuel Cell (AFC), Phosphoric Acid Fuel Cell (PAFC), Molten Carbonate Fuel Cell (MCFC), Solid Oxide (SOFC) Solid Oxide Fuel Cell (PEMFC), and Polymer Electrolyte Membrane Fuel Cell (PEMFC) fuel cells.

The solid oxide fuel cell is a fuel cell that operates at a high temperature of about 600 ° C to 1000 ° C. As compared with conventional fuel cells, the solid oxide fuel cell is relatively easy to control the position of the electrolyte and is free from electrolyte depletion, It is widely used because of its advantages.

On the other hand, a solid oxide fuel cell uses a fuel cell stack in which cells for fuel cells, in which an electrochemical reaction takes place, are stacked to obtain high output electricity. A plurality of such fuel cell stacks are installed in a module box.

Therefore, in the fuel cell stack module having a plurality of fuel cell stacks, a considerable temperature of heat is generated in a process of a plurality of stacked fuel cell cells performing an electrochemical reaction, so that the internal temperature is increased. Therefore, the solid oxide fuel cell has a problem that the durability of the fuel cell stack is reduced due to the high temperature generated in the electrochemical reaction, thereby increasing the cost of replacement and maintenance work.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a fuel cell system to which a cooling function capable of preventing a decrease in durability due to a high temperature generated in an electrochemical reaction is added.

In order to solve the above-described problems, the present invention can include the following configuration.

A fuel cell system to which a cooling function according to the present invention is added includes a fuel cell stack module including a first fuel cell stack for generating electricity and a first duct for supplying fuel to the first fuel cell stack; And a supply unit for supplying a carrier gas to the fuel cell stack module to cool the fuel supplied to the fuel cell stack module.

The fuel cell system with the cooling function according to the present invention may include a sensor unit for measuring the temperature of the first fuel cell stack. Wherein the supply unit includes a first supply mechanism for supplying a carrier gas to the first fuel cell stack, and a controller for controlling a flow rate of a carrier gas supplied to the first duct according to a temperature of the first fuel cell stack measured by the sensor unit The first adjustment mechanism may include a first adjustment mechanism.

The fuel cell system to which the cooling function according to the present invention is applied includes a first sensor mechanism for measuring the temperature of the first fuel cell stack and a second sensor mechanism for measuring the temperature of the second fuel cell stack connected to the first fuel cell stack through the first duct. And a second sensor mechanism for measuring the temperature of the second sensor. Wherein the supply unit includes a first supply mechanism for supplying a carrier gas to the first fuel cell stack and a second supply mechanism for supplying a carrier gas to the second fuel cell stack, The second supply mechanism is connected to the first fuel cell stack and the second fuel cell stack in accordance with the temperatures of the first fuel cell stack and the second fuel cell stack measured by the first sensor mechanism and the second sensor mechanism The carrier gas can be supplied individually.

In the fuel cell system with the cooling function according to the present invention, the fuel cell stack module may include a first fuel cell stack and a second fuel cell stack that are connected to each other through the first duct. Wherein the first duct passes through the first fuel cell stack in a first direction and passes through the second fuel cell stack in a second direction opposite to the first direction with respect to the second fuel cell stack, Lt; / RTI > Wherein the supply unit includes a first supply mechanism for supplying a carrier gas in the first direction to the first fuel cell stack through which the fuel passes in the first direction, And a second supply mechanism for supplying a carrier gas to the stack in the second direction.

According to the present invention, the following effects can be achieved.

The present invention can reduce the durability due to the high temperature generated in the electrochemical reaction, thereby reducing the cost of replacement and maintenance work.

1 is a schematic conceptual view showing a fuel cell system to which a cooling function according to the present invention is added;
FIG. 2 is a schematic conceptual view showing a fuel cell system to which a cooling function according to the first embodiment of the present invention is added
FIG. 3 is a schematic conceptual view showing a fuel cell system with a cooling function according to a second embodiment of the present invention
FIG. 4 is a schematic conceptual view showing a fuel cell system with a cooling function according to a third embodiment of the present invention

It should be noted that, in the specification of the present invention, the same reference numerals as in the drawings denote the same elements, but they are numbered as much as possible even if they are shown in different drawings.

Meanwhile, the meaning of the terms described in the present specification should be understood as follows.

The word " first, "" second," and the like, used to distinguish one element from another, are to be understood to include plural representations unless the context clearly dictates otherwise. The scope of the right should not be limited by these terms.

It should be understood that the terms "comprises" or "having" does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

It should be understood that the term "at least one" includes all possible combinations from one or more related items. For example, the meaning of "at least one of the first item, the second item and the third item" means not only the first item, the second item or the third item, but also the second item and the second item among the first item, Means any combination of items that can be presented from more than one.

Hereinafter, preferred embodiments of a fuel cell system to which a cooling function according to the present invention is applied will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic conceptual view showing a fuel cell system to which a cooling function according to the present invention is added, FIG. 2 is a schematic conceptual view showing a fuel cell system with a cooling function according to the first embodiment of the present invention, FIG. 4 is a schematic conceptual view showing a fuel cell system to which a cooling function according to a third embodiment of the present invention is added, according to a second embodiment of the present invention.

Referring to FIG. 1, the fuel cell system 1 to which the cooling function according to the present invention is added is a fuel cell system in which a fuel cell stack that generates electricity from an electrochemical reaction is overheated due to heat generated in an electrochemical reaction, To produce electricity. The fuel cell stack can produce electricity through electrochemical reactions generated by electrolytes, fuels, and oxidizing agents. In the fuel cell system 1 to which the cooling function according to the present invention is added, the fuel and the oxidant can pass through the fuel cell stack.

The fuel cell system 1 to which the cooling function according to the present invention is added includes a first fuel cell stack 21 for generating electricity and a first duct for supplying fuel to the first fuel cell stack 21 And a supply section (3) for supplying a carrier gas to the fuel cell stack module (2) to cool the fuel supplied to the fuel cell stack module (2). The fuel cell stack module (2) do.

The fuel cell stack module 2 can be cooled by supplying the carrier gas to the first duct 22 by the supply part 3 being connected to the first duct 22. [

The carrier gas may be a cooling medium at a temperature lower than the temperature of the fuel supplied to the first duct 22. For example, the cooling medium may be carbon dioxide (CO2). The cooling medium can be pre-cooled by the operator through the cooling device. For example, if the carrier gas is lower than the temperature of the fuel, the carrier gas may be supplied to the first duct 22 without being cooled by the cooling device. For example, if the carrier gas is higher than the temperature of the fuel, the carrier gas may be cooled by the cooling device to be lower than the temperature of the fuel, and then supplied to the first duct 22. For example, the cooling device may be an air conditioner.

The fuel cell system 1 with the cooling function according to the present invention can lower the temperature of the fuel by supplying the carrier gas to the high temperature fuel passing through the first fuel cell stack 21. [ Accordingly, the fuel cell system 1 to which the cooling function according to the present invention is added can prevent the first fuel cell stack 21 for producing electricity from being damaged or broken by heat generated from the electrochemical reaction have.

Hereinafter, the fuel cell stack module 2 and the supply unit 3 will be described in detail with reference to the accompanying drawings.

1, the fuel cell stack module 2 includes a first fuel cell stack 21 in which an electrochemical reaction takes place, a first fuel cell stack 21 for generating electricity, And a first duct 22 through which fuel is supplied to the first duct 21.

The fuel cell stack module 2 is configured to block the first fuel cell stack 21 from the outside so as to prevent fuel and oxidant flowing through the first fuel cell stack 21 from leaking to the outside. do. The oxidant may pass through the first fuel cell stack 21 along the second duct. The second duct is coupled to the first fuel cell stack (21) in a direction different from the first duct (22). For example, the second duct may be coupled to the first fuel cell stack 21 so as to be perpendicular to the first duct 22. Accordingly, the fuel cell stack module 2 can be installed in the first fuel cell stack 21, the fuel flowing through the first fuel cell stack 21, Electricity can be produced by an electrochemical reaction generated from an oxidant flowing through the anode 21.

Referring to FIG. 1, the fuel cell stack module 2 may include a first fuel cell stack 21.

In the first fuel cell stack 21, an electrochemical reaction occurs. The first fuel cell stack 21 is formed by stacking cells for fuel cells. The fuel cell cell comprises an electrolyte, a positive electrode, and a negative electrode. The electrolyte uses a substance having a high ionic conductivity to generate sufficient electricity. For example, the electrolyte may be cerium oxide (CeO2), zirconia (ZrO2). The anode may be formed of a material having a high electrical conductivity at the time of the catalytic reaction when the fuel is burned. The cathode may be formed of a material having high electrical conductivity and not easily oxidized. For example, the cathode and the anode may be ceramics. The first fuel cell stack 21 is formed such that the cells for fuel cells are stacked, and an electrochemical reaction occurs by flowing the fuel and the oxidant. Accordingly, the first fuel cell stack 21 can generate electricity. For example, the fuel flows through the cathode of the fuel cell cell, and the oxidant may flow through the anode of the fuel cell cell. The electrolyte is positioned between the fuel and the oxidant so that electricity can be produced by an electrochemical reaction.

The first fuel cell stack 21 is formed by flowing an oxidant through the first fuel cell stack 21 in a direction from the first fuel cell stack 21 to the second fuel cell stack 21. The fuel flows through the first fuel cell stack 21 so as to cross the direction in which the oxidant flows. For example, the first fuel cell stack 21 may have a first passage hole (not shown) passing through the inside of the cell for the fuel cell, so that the oxidant may flow through the first passage. For example, the first fuel cell stack 21 may have a second through hole (not shown) formed in the fuel cell cell in a direction intersecting the direction of passage of the oxidant, thereby allowing the fuel to flow. For example, the first fuel cell stack 21 may have the oxidant and the fuel crossed by joining or laminating the anode in which the first passage hole is formed and the cathode in which the second passage hole is formed in the other direction. The first fuel cell stack (21) can generate electricity as the oxidant and the fuel pass through and an electrochemical reaction occurs. For example, the electrolyte is positioned between a cathode through which the fuel passes and a cathode through which the oxidant passes, thereby preventing the fuel from mixing with the oxidant.

Referring to FIG. 1, the fuel cell stack module 2 may include a first duct 22.

The first duct 22 may be supplied with fuel. The first duct 22 is installed in the first fuel cell stack 21 such that one side and the other side of the first fuel cell stack 21 are connected to each other with reference to the first fuel cell stack 21. For example, assuming that the first fuel cell stack 21 is a rectangular parallelepiped and has a first side, a second side, a third side, and a fourth side in a counterclockwise direction from the upper side, the first duct 22 And may be installed on the first surface of the first fuel cell stack 21 and on the third surface of the first fuel cell stack 21. In this case, the fuel supplied through the first duct 22 may flow through the first fuel cell stack 21 from the third surface of the first fuel cell stack 21 to the first surface. The fuel supplied through the first duct 22 may flow through the first fuel cell stack 21 from the first surface of the first fuel cell stack 21 to the third surface. The upper side may be a direction in which the fuel that has passed through the first fuel cell stack 21 is discharged.

The first duct 22 may guide the fuel so that fuel supplied from the outside of the fuel cell stack module 2 passes through the first fuel cell stack 21. The first duct 22 may have a rectangular cross section, but the present invention is not limited thereto. The first duct 22 may guide the fuel to the first fuel cell stack 21, It may be formed in another form. The first duct 22 is provided with an impeller, a pump, and the like to move the fuel from the outside of the fuel cell stack module 2 to the first fuel cell stack 21. The fuel is supplied along the first duct 22 at a high temperature to increase the electrochemical reaction rate to improve the electric productivity.

The fuel cell stack module 2 may include a second duct. An oxidant is supplied to the second duct. The second duct is installed in the first fuel cell stack 21 so that one side and the other side of the first fuel cell stack 21 are connected to each other based on the first fuel cell stack 21. For example, assuming that the first fuel cell stack 21 is a rectangular parallelepiped and has a first side, a second side, a third side, and a fourth side in a counterclockwise direction from the upper side, The second surface of the fuel cell stack 21, and the fourth surface of the first fuel cell stack 21. In this case, the oxidant supplied to the second duct may flow through the first fuel cell stack 21 in the direction from the second surface of the first fuel cell stack 21 toward the fourth surface. The oxidant supplied to the second duct may flow through the first fuel cell stack 21 in the direction from the fourth surface of the first fuel cell stack 21 toward the second surface. The upper side may be a direction in which the fuel that has passed through the first fuel cell stack 21 is discharged. The second duct may be coupled to the first fuel cell stack 21 in a direction different from the first duct 22. For example, when the first duct 22 is coupled to the first surface and the third surface of the first fuel cell stack 21, the second duct is connected to the second surface of the first fuel cell stack 21, And the fourth surface. Accordingly, the second duct can guide the oxidant in a direction different from that of the first duct 22 guiding the fuel.

The second duct can suck the oxidant present on the outside of the fuel cell stack module (2). The second duct may guide the oxidant so that the sucked oxidant passes through the first fuel cell stack (21). The second duct may have a rectangular cross section, but the present invention is not limited thereto. The oxidant may be guided to the first fuel cell stack 21, leaked to the outside of the first fuel cell stack 21, But may be formed in other forms. The second duct may be provided with a blower or the like so that the oxidant present on the outside of the fuel cell stack module 2 may be sucked and moved to the first fuel cell stack 21.

Referring to FIG. 1, the supply unit 3 supplies a carrier gas to the fuel cell stack module 2 to cool the fuel supplied to the fuel cell stack module 2.

The supply part 3 is connected to a storage device 100 having a carrier gas stored therein at one side and is connected to the first duct 22 at the other side. Accordingly, the supply unit 3 can supply the carrier gas to the first duct 22. [ For example, the storage mechanism 100 is formed in a rectangular parallelepiped shape, and the interior of the storage mechanism 100 is formed as a space to store the carrier gas. The storage mechanism 100 may be formed in a different shape such as a cylindrical shape as long as it can store the carrier gas. The storage device 100 may be installed to be connected to a cooling device. Accordingly, the cooling device can cool the carrier gas stored in the storage mechanism (100). The supply unit 3 may be connected to the fuel cell stack module 2 by a pipe such as a pipe or a pipe. The supply unit 3 may supply the carrier gas stored in the storage mechanism 100 to the fuel cell stack module 2 using an impeller or a pump. The carrier gas moved to the fuel cell stack module 2 may be mixed with the high-temperature fuel supplied to the first duct 22, thereby lowering the temperature of the fuel.

The fuel cell system 1 to which the cooling function according to the present invention is applied can supply the carrier gas to the fuel cell stack module 2 by installing the supply unit 3 connected to the first duct 22. [ Accordingly, in the fuel cell system 1 to which the cooling function according to the present invention is added, the supply unit 3 mixes the carrier gas with the high-temperature fuel supplied to the first duct 22, . The fuel cell system 1 to which the cooling function according to the present invention is applied can reduce the temperature of the fuel supplied to the high temperature so that the first fuel cell stack 21 and the first duct 22 are damaged or broken .

Referring to FIG. 2, the fuel cell system 1 to which the cooling function according to the first embodiment of the present invention is added may include the sensor unit 4.

The sensor unit 4 measures the temperature of the first fuel cell stack 21. For example, the sensor unit 4 may be installed in contact with the first fuel cell stack 21 to directly measure the temperature of the first fuel cell stack 21. For example, the sensor unit 4 may measure the temperature in the vicinity of the first fuel cell stack 21 by being installed close to where the first fuel cell stack 21 is located. The sensor unit 4 may be a temperature sensor. The sensor unit 4 may provide the measured temperature information to the supply unit 3 using at least one of wire communication and wireless communication.

Referring to FIG. 2, in the fuel cell system 1 with the cooling function according to the first embodiment of the present invention, the supply unit 3 includes a first supply mechanism 31 and a first adjustment mechanism 32, . ≪ / RTI >

The first supply mechanism (31) supplies carrier gas to the first fuel cell stack (21). One side of the first supply mechanism 31 is connected to the storage mechanism 100 and the other side of the first supply mechanism 31 is connected to the first duct 22. Accordingly, the first supply mechanism (31) can move the carrier gas from the storage mechanism (100) to the first duct (22). The first supply mechanism 31 may mix the carrier gas with the fuel supplied to the first duct 22. For example, the first supply mechanism 31 may mix the carrier gas with the high-temperature fuel supplied to the first fuel cell stack 21. Accordingly, the first supply mechanism 31 can lower the temperature of the fuel. The first supply mechanism (31) is installed to be connected to the first duct (22) installed before the fuel passes through the first fuel cell stack (21). Accordingly, the first supply mechanism 31 can mix the carrier gas with the fuel supplied before passing through the first fuel cell stack 21. [0050] Accordingly, the first supply mechanism 31 can prevent the first fuel cell stack 21 from being damaged or damaged by lowering the temperature of the fuel supplied at a high temperature.

The first supply mechanism 31 is installed in a pipe such as a pipe or a pipe connecting the storage mechanism 100 and the fuel cell stack module 2 including the first fuel cell stack 21. For example, the first supply mechanism 31 may be at least one of an impeller, a blower, and a pump. In this case, the first supply mechanism 31 sucks the carrier gas stored in the storage mechanism 100 and discharges the carrier gas to the fuel cell stack module 2, thereby transferring the carrier gas to the first fuel cell stack 21 Can be supplied to the supplied fuel. For example, the first supply mechanism 31 may be a valve. In this case, the first supply mechanism 31 may supply or block the carrier gas to the fuel cell stack module 2 by opening and closing a channel connecting the storage mechanism 100 and the fuel cell stack module 2 . For example, the first supply mechanism 31 may allow the carrier gas to be supplied to the first duct 22 by opening a channel provided between the storage mechanism 100 and the fuel cell stack module 2 . For example, the first supply mechanism 31 may block the supply of the carrier gas to the first duct 22 by sealing the duct provided between the storage mechanism 100 and the fuel cell stack module 2 have. In this case, the pressure inside the fuel cell stack module 2 may be lower than the pressure inside the storing mechanism 100 in which the carrier gas is stored.

Referring to FIG. 2, the supply unit 3 may include a first adjustment mechanism 32. The first adjusting mechanism 32 adjusts the flow rate of the carrier gas supplied to the first duct 22 in accordance with the temperature of the first fuel cell stack 21 measured by the sensor unit 4. The first adjustment mechanism (32) is installed to be connected to the first supply mechanism (31). For example, when the first supply mechanism (31) is a valve, the first adjustment mechanism (32) can open / close the conduit by operating the valve. In this case, the first adjusting mechanism 32 may supply or block the carrier gas to the fuel cell stack module 2 as the valve opens and closes the channel.

For example, the first adjustment mechanism 32 may supply the carrier gas to the fuel cell stack module 2 by allowing the valve to open the channel when the temperature of the first fuel cell stack 21 is high. Accordingly, the first adjusting mechanism 32 can prevent the first fuel cell stack 21 from being damaged or damaged.

For example, when the temperature of the first fuel cell stack 21 is low, the first adjusting mechanism 32 may block the carrier gas supplied to the fuel cell stack module 2 by allowing the valve to seal the channel. have. Accordingly, the first adjusting mechanism 32 can prevent the carrier gas from being consumed.

When the first supply mechanism (31) is an impeller, the first adjustment mechanism (32) controls the flow rate of the carrier gas supplied to the fuel cell stack module (2) by controlling the output of the impeller.

For example, when the temperature of the first fuel cell stack 21 is high, the first adjusting mechanism 32 increases the rotational speed at which the impeller is rotated by raising the output of the impeller, The flow rate of the carrier gas supplied to the fuel cell stack module 2 can be increased. Accordingly, the first adjusting mechanism 32 can prevent the first fuel cell stack 21 from being damaged or broken by increasing the amount of the carrier gas mixed into the fuel.

For example, when the temperature of the first fuel cell stack 21 is low, the first adjusting mechanism 32 cuts off the power supplied to the impeller to supply the carrier gas to the fuel cell stack module 2 You can block things. Accordingly, the first adjusting mechanism 32 can prevent the carrier gas from being consumed.

The fuel cell system 1 to which the cooling function according to the first embodiment of the present invention is added is provided with the first regulating mechanism 32 (see FIG. 1) according to the temperature of the first fuel cell stack 21 measured by the sensor unit 4 Can control the first supply mechanism (31). Accordingly, the fuel cell system 1 to which the cooling function according to the first embodiment of the present invention is added can prevent the carrier gas from being wasted, thereby reducing the operating cost.

3, the fuel cell system 1 to which the cooling function according to the second embodiment of the present invention is added is provided with the first fuel cell stack 21a and the second fuel cell stack 21b in the fuel cell stack module 2, The carrier gas can be supplied individually.

Referring to FIG. 3, the fuel cell stack module 2 may include a partition member 23. The partition member 23 is disposed between the first fuel cell stack 21a and the second fuel cell stack 21b such that fuel supplied to the first duct 22 flows through both the first fuel cell stack 21a and the second fuel cell stack 21b. Is installed in the first duct (22) so as to be positioned between the first fuel cell stack (21a) and the second fuel cell stack (21b). The partition member 23 is coupled to one side of the first fuel cell stack 21a and one side of the second fuel cell stack 21b and is coupled to the first duct 22. For example, the partition member 23 has one side joined to one corner of the first fuel cell stack 21a and one side edge of the second fuel cell stack 21b, and the other side is connected to the first duct 22 Can be combined. Accordingly, the partition member 23 can seal one side of the first fuel cell stack 21a and one side of the second fuel cell stack 21b. Accordingly, the partition member 23 can guide the fuel supplied to one side of the first fuel cell stack 21a to the first fuel cell stack 21a. Therefore, the fuel can be guided by the partition member 23 and pass through the first fuel cell stack 21a. The fuel supplied to one side of the first fuel cell stack 21a may be guided by the partition member 23 to pass through the first fuel cell stack 21a and move to the other side opposite to the one side. The fuel that has passed through the first fuel cell stack 21a and travels to the other side can be guided by the first duct 22 and pass through the second fuel cell stack 21b. Accordingly, the fuel can move to one side of the second fuel cell stack 21b opposite to the other side of the second fuel cell stack 21b.

The fuel cell system 1 to which the cooling function according to the second embodiment of the present invention is added may include a first sensor mechanism 4a and a second sensor mechanism 4b.

The first sensor mechanism 4a measures the temperature of the first fuel cell stack 21a. For example, the first sensor mechanism 4a may be installed in contact with the first fuel cell stack 21a to directly measure the temperature of the first fuel cell stack 21a. For example, the first sensor mechanism 4a may measure the temperature in the vicinity of the first fuel cell stack 21a by being installed close to where the first fuel cell stack 21a is located. The first sensor mechanism 4a may be a temperature sensor. The first sensor mechanism 4a may provide the measured temperature information to the supply unit 3 using at least one of wire communication and wireless communication.

The second sensor mechanism 4b measures the temperature of the second fuel cell stack 21b connected to the first fuel cell stack 21a through the first duct 22. For example, the second sensor mechanism 4b may be installed in contact with the second fuel cell stack 21b to directly measure the temperature of the second fuel cell stack 21b. For example, the second sensor mechanism 4b may measure the temperature in the vicinity of the second fuel cell stack 21b by being installed close to where the second fuel cell stack 21b is located. The second sensor mechanism 4b may be a temperature sensor. The second sensor mechanism 4b may provide the measured temperature information to the supply unit 3 using at least one of wire communication and wireless communication. The second fuel cell stack 21b is installed in the fuel cell stack module 2 so as to be spaced apart from the first fuel cell stack 21a. The second fuel cell stack 21b is formed by stacking a plurality of cells for fuel cells. The fuel cell generates electricity through an electrochemical reaction generated as fuel and an oxidant pass through the electrolyte on both sides. For example, the fuel and the oxidant may be discharged through the cathode and anode, respectively, above and below the electrolyte. The second fuel cell stack 21b can obtain a high potential by stacking a plurality of cells for fuel cells. The second fuel cell stack 21b is connected to the first fuel cell stack 21a through the first duct 22. Accordingly, fuel passing through the first fuel cell stack 21a may pass through the second fuel cell stack 21b. The fuel passing through the second fuel cell stack 21b may pass through the second fuel cell stack 21b in a direction different from the fuel passing through the first fuel cell stack 21a.

3, the fuel cell system 1 is provided with a cooling function according to the second embodiment of the present invention. The fuel cell system 1 includes a first supply mechanism 31a and a second supply mechanism 31b. . ≪ / RTI >

The first supply mechanism 31a supplies the carrier gas to the first fuel cell stack 21a according to the temperature of the first fuel cell stack 21a measured by the first sensor mechanism 4a. One side of the first supply mechanism 31a is connected to the storage mechanism 100 and the other side of the first supply mechanism 31a is connected to the first duct 22. Accordingly, the first supply mechanism 31a can move the carrier gas from the storage mechanism 100 to the first duct 22. [ The first supply mechanism 31a may mix the carrier gas with the fuel supplied to the first duct 22. [ For example, the first supply mechanism 31a may mix the carrier gas with the high-temperature fuel supplied to the first fuel cell stack 21a. Accordingly, the first supply mechanism 31a can lower the temperature of the fuel. The first supply mechanism 31a is installed to be connected to the first duct 22 installed before the fuel passes through the first fuel cell stack 21a. Accordingly, the first supply mechanism 31a can mix the carrier gas with fuel supplied before passing through the first fuel cell stack 21a. Accordingly, the first supply mechanism 31a can prevent the first fuel cell stack 21a from being damaged or damaged by lowering the temperature of the fuel supplied at a high temperature.

The first supply mechanism 31a is installed in a pipe such as a pipe or a pipe connecting the storage mechanism 100 and the fuel cell stack module 2 including the first fuel cell stack 21a. For example, the first supply mechanism 31a may be an impeller. In this case, when the temperature of the first fuel cell stack 21a measured by the first sensor mechanism 4a is high, the first supply mechanism 31a rotates so that the carrier gas stored in the storage mechanism 100 And discharges the carrier gas to the fuel cell stack module 2, so that the carrier gas can be supplied to the fuel supplied to the first fuel cell stack 21a. When the temperature of the first fuel cell stack 21a measured by the first sensor mechanism 4a is low, the first supply mechanism 31a stops rotating the carrier gas to the first fuel cell stack 21a 21a.

For example, the first supply mechanism 31a may be a valve. In this case, the first supply mechanism 31a opens and closes a channel connecting the storage mechanism 100 and the fuel cell stack module 2, thereby supplying or blocking the carrier gas to the fuel cell stack module 2 . For example, when the temperature of the first fuel cell stack 21a measured by the first sensor mechanism 4a is high, the first supply mechanism 31a opens the duct, (22). For example, when the temperature of the first fuel cell stack (21a) measured by the first sensor mechanism (4a) is low, the first supply mechanism (31a) closes the conduit so that the carrier gas flows into the first duct (22). In this case, the pressure inside the fuel cell stack module 2 may be lower than the pressure inside the storing mechanism 100 in which the carrier gas is stored. Therefore, the first supply mechanism 31a supplies the carrier gas to the first fuel cell stack 21a according to the temperature of the first fuel cell stack 21a measured by the first sensor mechanism 4a Can be blocked.

3, the second supply mechanism 31b is connected to the second fuel cell stack 21b in accordance with the temperature of the second fuel cell stack 21b measured by the second sensor mechanism 4b, Gas is supplied. One end of the second supply mechanism 31b is connected to the storage mechanism 100 and the other end of the second supply mechanism 31b is connected to the first duct 22. Accordingly, the second supply mechanism 31b can move the carrier gas from the storage mechanism 100 to the first duct 22. [ The second supply mechanism (31b) can mix the carrier gas with the fuel supplied to the first duct (22). For example, the second supply mechanism 31b may mix the carrier gas with the high-temperature fuel supplied to the second fuel cell stack 21b. Accordingly, the second supply mechanism 31b can lower the temperature of the fuel. The second supply mechanism 31b is installed to be connected to the first duct 22 installed before the fuel passes through the second fuel cell stack 21b. Accordingly, the second supply mechanism 31b can mix the carrier gas with the fuel supplied before passing through the second fuel cell stack 21b. Therefore, the second supply mechanism 31b can prevent the second fuel cell stack 21b from being damaged or broken by lowering the temperature of the fuel supplied at a high temperature.

The second supply mechanism 31b is installed in a pipe such as a pipe or a pipe connecting the storage mechanism 100 and the fuel cell stack module 2 including the second fuel cell stack 21b. For example, the second supply mechanism 31b may be an impeller. In this case, when the temperature of the second fuel cell stack 21b measured by the second sensor mechanism 4b is high, the second supply mechanism 31b rotates so that the carrier gas stored in the storage mechanism 100 And discharges the carrier gas to the fuel cell stack module 2, thereby supplying the carrier gas to the fuel supplied to the second fuel cell stack 21b. When the temperature of the second fuel cell stack (21b) measured by the second sensor mechanism (4b) is low, the second supply mechanism (31b) stops rotating the carrier gas to the second fuel cell stack 21b.

For example, the second supply mechanism 31b may be a valve. In this case, the second supply mechanism 31b may open or close a channel connecting the storage mechanism 100 and the fuel cell stack module 2 to supply or block the carrier gas to the fuel cell stack module 2 . For example, when the temperature of the second fuel cell stack 21b measured by the second sensor mechanism 4b is high, the second supply mechanism 31b may open the duct so that the carrier gas flows into the first duct (22). For example, when the temperature of the second fuel cell stack 21b measured by the second sensor mechanism 4b is low, the second supply mechanism 31b closes the duct so that the carrier gas flows into the first duct (22). In this case, the pressure inside the fuel cell stack module 2 may be lower than the pressure inside the storing mechanism 100 in which the carrier gas is stored. Therefore, the second supply mechanism 31b supplies the carrier gas to the second fuel cell stack 21b according to the temperature of the second fuel cell stack 21b measured by the second sensor mechanism 4b Can be blocked.

In the fuel cell system 1 with the cooling function according to the second embodiment of the present invention, the first supply mechanism 31a and the second supply mechanism 31b are connected to the first sensor mechanism 4a and the second sensor mechanism 4b, The carrier gas can be separately supplied according to the temperatures of the first fuel cell stack 21a and the second fuel cell stack 21b measured by the second sensor mechanism 4b.

For example, when the temperature of the first fuel cell stack 21a and the temperature of the second fuel cell stack 21b are both high, the fuel cell system 1 with the cooling function according to the second embodiment of the invention, The first supply mechanism 31a and the second supply mechanism 31b may be operated to supply the carrier gas to both the first fuel cell stack 21a and the second fuel cell stack 21b.

For example, the fuel cell system 1 with the cooling function according to the second embodiment of the present invention operates only the first supply mechanism 31a when the temperature of the first fuel cell stack 21a is high, The carrier gas can be supplied only to the first fuel cell stack 21a.

Accordingly, the fuel cell system 1 to which the cooling function according to the second embodiment of the present invention is added can effectively prevent the carrier gas from being wasted. The fuel cell system 1 with the cooling function according to the second embodiment of the present invention can reduce the operating time of the cooling device that operates to cool the carrier gas by reducing the amount of the carrier gas used. Therefore, the fuel cell system 1 with the cooling function according to the second embodiment of the present invention can also reduce the power consumed by the cooling device.

The fuel cell system 1 to which the cooling function according to the second embodiment of the present invention is added includes a third fuel cell stack 21c and a fourth fuel cell stack 21d in addition to the fuel cell stack module 2 Can be installed. In this case, the first duct 22 is connected to the first fuel cell stack 21a, the second fuel cell stack 21b, the third fuel cell stack 21c, and the fourth fuel cell stack 21d ) Can be connected. The partition member 23 is further provided between the second fuel cell stack 21b and the third fuel cell stack 21c and between the third fuel cell stack 21c and the fourth fuel cell stack 21d Can be installed. Therefore, the fuel supplied to the first duct 22 can pass through all of the fuel cell stacks. The fuel cell system 1 to which the cooling function according to the second embodiment of the present invention is added has a third supply mechanism 31c and a third sensor mechanism 4c corresponding to the third fuel cell stack 21c, As shown in FIG. The fuel cell system 1 to which the cooling function according to the second embodiment of the present invention is added has the fourth supply mechanism 31d and the fourth sensor mechanism 4d corresponding to the fourth fuel cell stack 21d . The third fuel cell stack 21c and the fourth fuel cell stack 21d may have the same functions and effects as those of the first fuel cell stack 21a and the second fuel cell stack 21b described above. The third supply mechanism 31c and the fourth supply mechanism 31d may have the same function and effect as those of the first supply mechanism 31a and the second supply mechanism 31b described above. The third sensor mechanism 4c and the fourth sensor mechanism 4d may have the same functions and effects as those of the first sensor mechanism 4a and the second sensor mechanism 4b described above.

The fuel cell system 1 to which the cooling function according to the second embodiment of the present invention is added is provided with the first fuel cell stack 21a and the second fuel cell stack 21b only in the fuel cell stack module 2 The third fuel cell stack 21c and the fourth fuel cell stack 21d may be further provided to increase the electricity generation amount.

The fuel cell system 1 with the cooling function according to the second embodiment of the present invention may further increase the electricity generation amount by further installing the fuel cell stack.

Referring to FIG. 4, in the fuel cell system 1 with the cooling function according to the third embodiment of the present invention, the first supply mechanism 31a and the second supply mechanism 31b are connected to the first fuel The carrier gas can be supplied so as to correspond to the direction of the fuel passing through the cell stack 21a and the second fuel cell stack 21b.

For example, in the fuel cell system 1 with the cooling function according to the third embodiment of the present invention, when the fuel supplied to generate electricity generates the first fuel cell stack 21a in the first direction R1, , The first supply mechanism 31a may be provided so as to correspond to the first direction. Accordingly, in the fuel cell system 1 with the cooling function according to the third embodiment of the present invention, the first supply mechanism 31a supplies the carrier gas in the first direction to the first fuel cell stack 21a So that the fuel can be cooled without interfering with the flow of the fuel.

For example, in the fuel cell system 1 with the cooling function according to the third embodiment of the present invention, fuel supplied to generate electricity is supplied to the second fuel cell stack 21b in the second direction R2 The second supply mechanism 31b may be provided so as to correspond to the second direction. Accordingly, in the fuel cell system 1 with the cooling function according to the third embodiment of the present invention, the second supply mechanism 31b can supply the carrier gas in the second direction to the second fuel cell stack 21b So that the fuel can be cooled without interfering with the flow of the fuel.

Therefore, in the fuel cell system 1 with the cooling function according to the third embodiment of the present invention, the first supply mechanism 31a and the second supply mechanism 31b are connected to the first fuel cell stack 21a, And the second fuel cell stack 21b, the fuel can be cooled while preventing the electricity generation efficiency from being lowered as the flow of the fuel is retarded by supplying the carrier gas to match the direction of the fuel passing through the second fuel cell stack 21b.

The fuel cell system 1 to which the cooling function according to the third embodiment of the present invention is added has the third fuel cell stack 21c and the fourth fuel cell stack 21d in addition to the fuel cell stack module 2 Can be installed. In this case, the first duct 22 is connected to the first fuel cell stack 21a, the second fuel cell stack 21b, the third fuel cell stack 21c, and the fourth fuel cell stack 21d ) Can be connected. The partition member 23 is further provided between the second fuel cell stack 21b and the third fuel cell stack 21c and between the third fuel cell stack 21c and the fourth fuel cell stack 21d Can be installed. Therefore, the fuel supplied to the first duct 22 can pass through all of the fuel cell stacks. In addition, the fuel cell system 1 to which the cooling function according to the third embodiment of the present invention is added may further include a third supply mechanism 31c corresponding to the third fuel cell stack 21c. The fuel cell system 1 to which the cooling function according to the third embodiment of the present invention is added may further include a fourth supply mechanism 31d corresponding to the fourth fuel cell stack 21d. The third fuel cell stack 21c and the fourth fuel cell stack 21d may have the same functions and effects as those of the first fuel cell stack 21a and the second fuel cell stack 21b described above. The third supply mechanism 31c and the fourth supply mechanism 31d may have the same function and effect as those of the first supply mechanism 31a and the second supply mechanism 31b described above.

The fuel cell system 1 to which the cooling function according to the third embodiment of the present invention is added has the first fuel cell stack 21a and the second fuel cell stack 21b only in the fuel cell stack module 2 The third fuel cell stack 21c and the fourth fuel cell stack 21d may be further provided to increase the electricity generation amount.

The fuel cell system 1 with the cooling function according to the third embodiment of the present invention may further increase the electricity generation amount by further installing the fuel cell stack.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents. Will be clear to those who have knowledge of.

1: Fuel cell system with cooling function 2: Fuel cell stack module
3: Supply part 4: Sensor part
21: first fuel cell stack 22: first duct
31: first supply mechanism 32: first adjustment mechanism
100: storage device

Claims (4)

A fuel cell stack module including a first fuel cell stack for generating electricity, and a first duct for supplying fuel to the first fuel cell stack; And
And a supply unit for supplying a carrier gas to the fuel cell stack module to cool the fuel supplied to the fuel cell stack module. The method according to claim 1,
And a sensor unit for measuring a temperature of the first fuel cell stack,
Wherein the supply unit includes a first supply mechanism for supplying a carrier gas to the first fuel cell stack, and a controller for controlling a flow rate of a carrier gas supplied to the first duct according to a temperature of the first fuel cell stack measured by the sensor unit And a second regulating mechanism for regulating the temperature of the fuel cell. The method according to claim 1,
A first sensor mechanism for measuring the temperature of the first fuel cell stack and a second sensor mechanism for measuring the temperature of the second fuel cell stack connected to the first fuel cell stack through the first duct, ,
Wherein the supply unit includes a first supply mechanism for supplying a carrier gas to the first fuel cell stack and a second supply mechanism for supplying a carrier gas to the second fuel cell stack, The second supply mechanism is connected to the first fuel cell stack and the second fuel cell stack in accordance with the temperatures of the first fuel cell stack and the second fuel cell stack measured by the first sensor mechanism and the second sensor mechanism And the carrier gas is supplied to the fuel cell system. The method according to claim 1,
Wherein the fuel cell stack module includes a first fuel cell stack and a second fuel cell stack that are connected to each other through the first duct,
Wherein the first duct passes through the first fuel cell stack in a first direction and passes through the second fuel cell stack in a second direction opposite to the first direction with respect to the second fuel cell stack, Lt; / RTI >
Wherein the supply unit includes a first supply mechanism for supplying a carrier gas in the first direction to the first fuel cell stack through which the fuel passes in the first direction, And a second supply mechanism for supplying a carrier gas to the stack in the second direction.

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