KR100969508B1 - Fuel cell system with a Hydrogen generation apparatus - Google Patents

Abstract

The present invention provides a fuel cell system including a hydrogen generator which supplies hydrogen and heat generated from a hydrogen generator to a fuel cell and improves energy storage density per unit weight by circulating water generated in the fuel cell to the hydrogen generator. It is about.

A fuel cell system having a hydrogen generator according to the present invention includes a fuel cell 110 generating electricity by receiving hydrogen and air or oxygen, a hydrogen generator 120 generating hydrogen and heat, and the fuel It characterized in that it comprises a water recovery pipe 170 for guiding the water generated in the battery 110 to the hydrogen generator 120. According to the present invention, the hydrogen supply capacity per unit weight is improved, so that a large amount of fuel can be loaded, and a long time or long distance operation can be performed with one fuel supplement.

Hydrogen Generator, Fuel Cell, Circulation, System

Description

Fuel cell system with a hydrogen generation device

1 is a block diagram showing a fuel cell system having a hydrogen generator according to the present invention.

Explanation of symbols on the main parts of the drawings

100. Fuel Cell System 110. Fuel Cell

120. Hydrogen Generator 130. Trap

140. Fuel Humidifier 178. Water Storage Tank

179. Water flow control valve 150. Fuel guide tube

160. Air humidifier 162. Air guide

170. Water recovery pipe 172. Fuel humidifier water supply pipe

173. 1st valve 174. Air humidifier water supply pipe

175. Second valve 176. Water supply means

180. Heat supply means 182. First heat supply pipe

183. 3rd valve 184. 2nd heat supply pipe

185. 4th valve 186. 3rd heat supply pipe

187. Fifth Valve 190. Heat Exchanger

192. Fifth heat supply pipe 194. Fifth heat supply pipe

196. Sixth Valve 198. Seventh Valve

The present invention relates to a fuel cell system, and more particularly, to supply hydrogen and heat generated from a hydrogen generator to a fuel cell, and to circulate water generated from the fuel cell to a hydrogen generator to improve energy storage density per unit weight. A fuel cell system is provided with an improved hydrogen generator.

In general, a fuel cell system requires a high pressure cylinder or a hydrogen storage device using a hydrogen storage alloy to supply hydrogen as a fuel.

Since the hydrogen storage device such as the high pressure cylinder is used at high pressure, there is a risk of explosion, and in order to supply hydrogen for a longer time with a single charge, hydrogen must be filled with high pressure. Therefore, the development of a high-pressure cylinder with durability that can withstand high pressure is required.

On the other hand, a hydrogen storage device using a hydrogen storage alloy does not have an explosion risk like a high-pressure cylinder, but due to the weight of the hydrogen storage alloy itself, there is a problem in that the storage capacity per unit weight is low and the time required for hydrogen charging is considerably long.

Therefore, in recent years, the method of solving the explosion risk of the high-pressure cylinder and solving the low hydrogen storage capacity per unit weight of the hydrogen storage alloy has been heated to the development of a hydrogen generator using a hydrogen generating material.

As a result, the following technologies have been developed.

Japanese Laid-Open Patent Publication No. 2004-231466 discloses a technique in which aluminum powder and calcium oxide powder are mixed to generate up to 540 ml of hydrogen per 1 g of aluminum at room temperature.

Korean Patent Laid-Open Publication No. 2007-00322955 discloses a hydrogen generating material and a hydrogen generating device for generating hydrogen by reacting aluminum and magnesium with a heating agent such as calcium oxide, magnesium oxide, calcium chloride, magnesium chloride or calcium sulfate, and generating hydrogen. 1 g of material and 2 g of water react to produce up to 1061 ml of hydrogen.

Korean Patent Laid-Open Publication No. 2007-0050479 discloses a hydrogen generating material including aluminum particles, alkaline earth metal oxides and flocculation inhibitor particles, and generates about 1000 ml of hydrogen per 1 g of aluminum powder.

Korean Patent Publication No. 2007-0121511 discloses a composition for generating hydrogen, including calcium oxide and aluminum or alumina powder, calcium chloride or magnesium chloride, and iron or magnesium powder.

However, the above-mentioned published patent is limited to the hydrogen generating material and the hydrogen generating device, and does not specifically describe the linkage technology between the fuel cell system and the hydrogen generating device for effective use of hydrogen energy.

It is an object of the present invention to supply hydrogen and heat generated from a hydrogen generator to a fuel cell, and to generate hydrogen generated by circulating water generated from the fuel cell to the hydrogen generator to improve energy storage density and hydrogen supply capacity per unit weight. The present invention provides a fuel cell system equipped with an apparatus.

A fuel cell system having a hydrogen generator according to the present invention includes a fuel cell for generating electricity by receiving hydrogen and air or oxygen, a hydrogen generator for generating hydrogen and heat, and water generated in the fuel cell. It characterized in that it comprises a water recovery pipe leading to the generator.

A trap for filtering impurities from hydrogen and impurities generated in the hydrogen generator, a fuel humidifier for humidifying hydrogen from which impurities are removed from the trap, and a fuel guide tube for guiding hydrogen humidified in the fuel humidifier to the fuel cell. And an air humidifier for humidifying air or oxygen supplied to the fuel cell, heat supply means for supplying heat generated from the hydrogen generator to the fuel humidifier, air humidifier and fuel cell, and the fuel cell and hydrogen. It is characterized in that the heat exchanger for receiving heat from the generator for heat exchange with water.

One side of the water recovery pipe, the fuel humidifier water supply means for guiding a part of the water recovered to the fuel humidifier, and the air humidifier water supply means for guiding a part of the recovered water to the air humidifier is characterized in that it is further provided.

One side of the water recovery pipe, characterized in that the water storage tank for storing the water generated in the fuel cell is provided.

The heat supply means includes a first heat supply pipe for guiding heat generated by the hydrogen generator to the fuel humidifier, a second heat supply pipe for guiding heat generated from the hydrogen generator to the air humidifier, and the hydrogen generator. And a third heat supply pipe for guiding the generated heat to the fuel cell.

At one side of the first heat supply pipe, the second heat supply pipe, and the third heat supply pipe, among the third valve, the fourth valve, and the fifth valve to selectively shield the first heat supply pipe, the second heat supply pipe, and the third heat supply pipe. It is characterized in that any one is provided.

The fifth valve may open the third heat supply pipe for a predetermined time during the initial driving of the fuel cell.

Between the fuel cell and the hydrogen generator, the fourth heat supply pipe and the fifth heat supply pipe for guiding the heat of the fuel cell and the hydrogen generator to the heat exchanger is characterized in that it is provided.

One side of the fourth heat supply pipe and the fifth heat supply pipe may include a sixth valve or a seventh valve selectively shielding the fourth heat supply pipe and the fifth heat supply pipe.

When the first heat supply pipe, the second heat supply pipe and the third heat supply pipe are opened, the fourth heat supply pipe and the fifth heat supply pipe are shielded.

According to such a structure, the hydrogen supply capability per unit weight improves and there exists an advantage to become more compact.

Hereinafter, a configuration of a fuel cell system provided with the hydrogen generator as described above will be described with reference to FIG. 1.

1 is a block diagram showing a fuel cell system having a hydrogen generator according to the present invention.

As shown in the drawing, the fuel cell system 100 employing a preferred embodiment of the present invention includes a fuel cell 110 generating electricity by receiving hydrogen and air or oxygen, and a hydrogen generating device 120 generating hydrogen and heat. ), A trap 130 for filtering impurities from hydrogen and impurities generated by the hydrogen generator 120, a fuel humidifier 140 for humidifying hydrogen from which impurities are removed from the trap 130, and the fuel. A fuel guide tube 150 for guiding hydrogen humidified by the humidifier 140 to the fuel cell 110, an air humidifier 160 for humidifying air or oxygen supplied to the fuel cell 110, and the fuel; Water recovery pipe 170 for guiding the water generated in the battery 110 to the hydrogen generator 120, and the heat generated by the hydrogen generator 120, the fuel humidifier 140, air humidifier 160 and fuel cell It comprises a heat supply means 180 for selectively supplying to 110 .

The fuel cell 110 is a power generation device that converts chemical energy directly into electrical energy by an electrochemical reaction between hydrogen and oxygen. Hydrogen is supplied from the hydrogen generator 120 and oxygen uses oxygen contained in air. Done.

To this end, the fuel cell system 100 is provided with a hydrogen generator (120). The hydrogen generating device 120 is configured to generate water by receiving water therein, and a hydrogen generating material for generating hydrogen by reacting with water is embedded in the hydrogen generating device 120. Generates hydrogen and heat during reaction with water.

The hydrogen generator 120 is configured to be mechanically separated from the fuel cell system 100. This is to facilitate the maintenance and repair of the hydrogen generator 120.

The trap 130 is provided above the hydrogen generator 120. The trap 130 is coupled to communicate with the inside of the hydrogen generator 120 serves to remove impurities that are generated incidentally when the hydrogen generator 120 generates hydrogen.

That is, when the hydrogen generator 120 generates hydrogen, impurity particles are generated in the hydrogen generator 120, and the trap 130 separates the impurity particles from the hydrogen and only the hydrogen fuel humidifier 140. You will be directed to.

To this end, the trap 130 is configured to include a plurality of vessels containing water, and by passing the hydrogen containing the impurity particles between the water contained in these vessels impurity particles settle in the water and discharge only hydrogen to purify That's the principle.

In addition, the trap 130 is selectively configured to be detachable. This is to facilitate the cleaning of the trap 130 when a large amount of impurities are loaded inside the trap 130, and can be replaced if necessary.

The fuel humidifier 140 is provided above the trap 130. The fuel humidifier 140 is configured to humidify the purified hydrogen while passing through the trap 130.

That is, the fuel cell 110 generates electricity by receiving hydrogen or hydrogen containing predetermined water and air or oxygen containing predetermined water, and operating more efficiently when heated to an appropriate temperature.

To this end, the hydrogen is discharged to the outside along with the predetermined water (humidity) while passing through the fuel humidifier 140 and supplied to the fuel cell 110.

The fuel guide tube 150 is provided above the fuel humidifier 140. The fuel guide tube 150 serves to guide hydrogen and moisture guided out of the fuel humidifier 140 to the fuel cell 110, and the right end portion communicates with the upper left side of the fuel cell 110. Are combined.

An air humidifier 160 is provided below the fuel guide tube 150. The air humidifier 160 serves to humidify the outside air after inhaling the air. As described above, the air humidifier 160 reacts with hydrogen, which is fuel, in the fuel cell 110 to generate electricity. Humidified to supply.

To this end, the inside of the air humidifier 160 is coupled to communicate with the inside of the fuel cell 110. That is, an air guide tube 162 is provided on an upper surface of the air humidifier 160, and both ends of the air guide tube 162 are coupled to communicate with the fuel cell 110 and the inside of the air humidifier 160.

Therefore, the air or oxygen sucked from the air humidifier 160 from the outside is humidified in the air humidifier 160 and then supplied into the fuel cell 110.

The fuel cell 110 and the hydrogen generator 120 are connected by a water recovery pipe 170. That is, the fuel cell 110 is also formed with water when producing electricity by the reaction of hydrogen and oxygen, the water generated in the fuel cell 110 is the hydrogen generator 120 through the water recovery pipe (170) Guided inside

Therefore, both ends of the water recovery pipe 170 is preferably configured to communicate with the interior of the fuel cell 110 and the hydrogen generator 120.

One side of the water recovery pipe 170 is provided with air humidifier water supply means for guiding a part of the water flowing along the water recovery pipe 170 to the air humidifier, and fuel humidifier water supply means for guiding the fuel humidifier.

That is, the air humidifier water supply means is branched downward from the upper central portion of the water recovery pipe 170, the air humidifier water supply pipe 174 coupled to communicate with the inside of the air humidifier 160, and the air humidifier water supply pipe It comprises a second valve 175 for selectively shielding the.

In addition, the fuel humidifier water supply pipe is branched from the left central portion of the water recovery pipe 170 to the right direction, the fuel humidifier water supply pipe 172 coupled to communicate with the inside of the fuel humidifier 140, and the fuel humidifier water supply pipe ( And a first valve 173 for selectively shielding 172.

Accordingly, the fuel humidifier water supply pipe 172 opens a first valve 173 when the water inside the fuel humidifier 140 is insufficient to selectively select a portion of water flowing along the water recovery pipe 170 to the fuel humidifier 140. Will be supplied.

In addition, the air humidifier water supply pipe 174 is to open the second valve 175 when the water in the air humidifier 160 is insufficient to selectively select a portion of the water flowing along the water recovery pipe 170 to the air humidifier 160. Will be supplied.

In addition, the first valve 173 and the second valve 175 are connected to the fuel humidifier 140 to efficiently humidify hydrogen and air through the fuel humidifier water supply pipe 172 and the air humidifier water supply pipe 174. It is preferable that the air humidifier 160 is configured to be opened and closed automatically according to the humidity or the water level.

That is, the first valve 173 and the second valve 175 are selectively opened when the humidity or the water level inside the fuel humidifier 140 and the air humidifier 160 is lowered to flow along the water recovery pipe 170. A portion of water may be introduced into the fuel humidifier 140 or the air humidifier 160.

A water storage tank 178 is provided below the water recovery pipe 170. The water storage tank 178 is configured to temporarily store the water generated from the fuel cell 110, the inside is coupled to communicate with the water recovery pipe 170.

The water supply means 176 is provided on the left side of the water storage tank 178. The water supply means 176 is configured to maintain the amount of water stored in the water storage tank 178 by a predetermined level, the water storage tank 178 and the inside of the water supply means 176 communicate with each other. do.

Accordingly, the water supplied through the water supply means 176 may be filled in the water storage tank 178, and by adjusting the amount of water supplied by the water supply means 176, the water storage tank 178 may be filled with water. The water level can be adjusted.

A water flow control valve 179 is provided between the water storage tank 178 and the hydrogen generator 120. The water flow control valve 179 is selectively opened to supply water to the hydrogen generating device 120, and is configured to selectively restrict the flow of water stored in the water storage tank 178.

Meanwhile, the fuel cell 110 effectively generates electricity when heated and maintained at an appropriate temperature, and the hydrogen generator 120 generates heat when water and hydrogen generating materials react to generate hydrogen. The heat is supplied to the fuel humidifier 140, the air humidifier 160, or the fuel cell 110 by the heat supply means 180.

That is, the heat supply means 180 includes a first heat supply pipe 182 for guiding heat generated from the hydrogen generator 120 to the fuel humidifier 140, and a second heat supply pipe for guiding the air humidifier 160. 184, and a third heat supply pipe 186 for guiding heat generated by the hydrogen generator 120 to the fuel cell 110.

The upper portions of the first heat supply pipe 182, the second heat supply pipe 184, and the third heat supply pipe 186 communicate with the fuel humidifier 140, the air humidifier 160, or the fuel cell 110. Are combined.

Therefore, the heat generated from the hydrogen generator 120 is fuel humidifier 140, air humidifier 160 through the first heat supply pipe 182, the second heat supply pipe 184 and the third heat supply pipe 186. And the fuel cell 110.

The heat supplied to the fuel humidifier 140 through the first heat supply pipe 181 is used to humidify hydrogen by heating water in the fuel humidifier 140, and the air humidifier 160 through the second heat supply pipe 184. ) Is used to heat the air sucked into the air humidifier 160 and the water inside the air humidifier 160, and is supplied to the fuel cell 110 through the third heat supply pipe 186. The heat enables the initial driving of the fuel cell 110.

That is, the fuel cell 110 is capable of producing efficient electricity when heated above a predetermined temperature. The heat supplied to the fuel cell 110 through the third heat supply pipe 186 is initially driven by the fuel cell 110. Allow it to heat up to an appropriate temperature faster.

Therefore, when the hydrogen generator 120 operates to generate heat, the first heat supply pipe 182, the second heat supply pipe 184, and the third heat supply pipe 186 are opened.

More specifically, when the fuel cell system 100 is initially driven, heat generated from the hydrogen generator 120 is supplied to the fuel humidifier 140, the fuel cell 110, and the air humidifier 160. When the fuel humidifier 140, the fuel cell 110, and the air humidifier 160 are heated to an appropriate temperature, the heat supply pipe 182, the second heat supply pipe 184, and the third heat supply pipe 186 are shielded. (off) to maintain the proper temperature.

To this end, the first heat supply pipe 182, the second heat supply pipe 184, and the third heat supply pipe 186 include a first heat supply pipe 182, a second heat supply pipe 184, and a third heat supply pipe 186. The third valve 183, the fourth valve 185 or the fifth valve 187 is preferably provided to selectively shield each.

On the other hand, the fuel cell system 100 is further provided with a heat exchanger 190. The heat exchanger 190 receives heat from the fuel cell 110 and the hydrogen generator 120 and heat-exchanges the heat with water.

That is, a fifth heat supply pipe 192 having an upper end coupled to communicate with the fuel cell 110 is provided at an upper side of the heat exchanger 190, and a left end connected to the hydrogen generator 120 at the left side. Four heat supply pipe 194 is provided.

In addition, the fifth heat supply pipe 192 guides heat generated when the fuel cell 110 generates electricity to the heat exchanger 190, and the fourth heat supply pipe 194 is a hydrogen generator ( The heat generated by the 120 is guided to the heat exchanger 190.

In the heat exchanger 190, water to be heat-exchanged with heat provided from the fourth heat supply pipe 194 and the fifth heat supply pipe 192 is stored.

Therefore, the water in the heat exchanger 190 is heated by the heat provided from the fourth heat supply pipe 194 and the fifth heat supply pipe 192.

The reason why the heat exchanger 190 is provided is to supply hot water when the fuel cell system 100 is installed in a vehicle, such as a submarine, an aircraft, a submarine, and an aircraft carrier, in which water is not smoothly supplied from the outside. The heat exchanger 190 may serve as a water heater.

In addition, the heat exchanger 190 may also perform a role of cooling the fuel cell 110. That is, since the heat generated by the fuel cell 110 is supplied to the heat exchanger 190 and eventually loses heat, it is possible to simultaneously perform a role of a cooler for preventing overheating of the fuel cell 110.

In addition, the heat exchanger 190 is preferably configured to selectively open when hot water is required or to cool the fuel cell 110.

To this end, the fourth heat supply pipe 194 is provided with a sixth valve 196 for selectively shielding the fourth heat supply pipe 194, and the fifth heat supply pipe 192 has a fifth heat supply pipe 192. A seventh valve 198 for selectively shielding is provided.

Hereinafter, embodiments of the present invention will be described in detail.

In the present invention, the hydrogen storage capacity per unit weight can be improved by reacting a material containing no hydrogen with water in an economical way to increase the storage density of hydrogen energy.

That is, the aluminum metal does not contain hydrogen and water was electrochemically reacted in the hydrogen generator 120, it can be seen that according to the following equation (1) 1.5 mol of hydrogen per mol of aluminum is generated.

2Al + 6H ₂ O = 2Al (OH) ₃ + 3H ₂ (1)

According to Equation (1), the weight of hydrogen that can be generated per 26.98 g of aluminum is about 3 g, which is about 33.6 liters in terms of standard volume. Therefore, the amount of hydrogen obtained by reacting 1 g of aluminum with water is 0.11 g in weight and 1.245 liter in volume.

If the amount of water used is not taken into account, the capacity of hydrogen per 1 g of aluminum is about 11.1 wt%. However, in order to generate hydrogen using metal fuel, water must be used, so the storage capacity of hydrogen should be calculated in consideration of the weight of the water used. According to formula (1), 3 mol of water per mol of aluminum is required.

That means 54g of water per 26.98g of aluminum. Therefore, if water is not recovered by itself, a total of 80.98 g of aluminum 26.98 g and 54 g of water is required to generate 1.5 mol (3 g) of hydrogen. Will be lowered.

For example, if hydrogen is supplied to the fuel cell 110 having a maximum output of 10 kW at 0.5 V, the required amount of hydrogen is about 12.5 g / min per minute, and the amount of water required for hydrogen generation is about 224.28 g / min per minute. do.

If the fuel cell 110 is operated at an output of 10 kW, the amount of water required for one hour of operation is 13.46 kg. As with 30 kg of aluminum fuel, very high hydrogen storage densities of 7.7 wt% can be achieved.

In addition, as shown in [Table 1] and [Table 2], the hydrogen storage density per unit weight can be increased to 9 to 10 wt% if the fuel is charged or the amount of water circulating in the hydrogen generating reactor and the fuel cell 110 is reduced. It can increase.

Therefore, in the fuel cell system 100 according to the present invention, hydrogen and heat are generated from water through a hydrogen generation reaction and supplied to the fuel cell 110, the fuel humidifier 140, and the air humidifier 160. The water generated in 110 may be recovered to the hydrogen generating device 120 and reused in the hydrogen generating reaction.

In addition, when the hydrogen fuel production, supply and use cycles are applied to mobile devices such as automobiles, trains, airplanes, motorcycles, mobile submarines and aircraft carriers, energy storage density per unit weight can be increased while using a small amount of water. .

[Table 1] Hydrogen storage density when circulating 13.46kg of water required for 60 minutes operation with hydrogen generation amount, 10kW fuel cell use time and maximum output according to aluminum amount.

Amount of fuel [kg] Total hydrogen generation [kg] Usage time [h] Hydrogen storage density [wt%] 10 1.11 1.48 4.7% 20 2.22 2.97 6.6% 30 3.33 4.45 7.7% 40 4.44 5.94 8.3% 50 5.55 7.42 8.7% 60 6.66 8.91 9.1%

[Table 2] Hydrogen storage density when circulating 6.73kg of water required for 30 minutes of operation with hydrogen output, 10 kW fuel cell usage time and maximum output according to aluminum volume.

Amount of fuel [kg] Total hydrogen generation [kg] Usage time [h] Hydrogen storage density [wt%] 10 1.11 1.48 6.6% 20 2.22 2.97 8.3% 30 3.33 4.45 9.1% 40 4.44 5.94 9.5% 50 5.55 7.42 9.8% 60 6.66 8.91 10.0%

Hereinafter, the operation of the fuel cell system 100 configured as described above will be described with reference to FIG. 1.

When the fuel cell system 100 is driven, the water flow rate control valve 179 is opened so that the water stored in the water storage tank 178 is supplied to the hydrogen generator 120.

In addition, the third valve 183, the fourth valve 185, and the fifth valve 187 are turned on so that the first heat supply pipe 182, the second heat supply pipe 184, and the third heat supply pipe ( 186 is opened, and the sixth valve 196 and the seventh valve 198 are turned off to shield the fourth heat supply pipe 194 and the fifth heat supply pipe 198.

In the hydrogen generator 120, water and hydrogen generating materials react to generate hydrogen, steam, and heat.

Hydrogen generated in the hydrogen generator 120 is moved to the trap 130 with water to filter impurities, and then introduced into the fuel humidifier 140 and humidified to fuel through the fuel guide tube 150. It is supplied into the battery 110.

In addition, the heat generated by the hydrogen generator 120 is fuel humidifier 140, air humidifier 160 and through the first heat supply pipe 182, the second heat supply pipe 184 and the third heat supply pipe 186. The fuel cell 110 is heated.

Therefore, the water inside the fuel humidifier 140 and the air humidifier 160 is heated and humidified, and the fuel cell 110 is heated to an appropriate temperature to enable faster driving.

At the same time, the air humidifier 160 is humidified after inhaling air or oxygen from the outside, and the humidified air or oxygen is supplied into the fuel cell 110 through the air guide tube 162.

Hydrogen and air or oxygen supplied into the fuel cell 110 through the fuel guide tube 150 and the air guide tube 162 react to generate electricity, and water is also formed.

Water generated in the fuel cell 110 is temporarily stored in the water storage tank 178 along the water recovery pipe 170, and selectively generates hydrogen according to the opening of the water flow control valve 179. It is supplied to the apparatus 120 and used to generate hydrogen by reacting with the hydrogen generating material again.

In addition, some of the water recovered along the water recovery pipe 170 may be selectively opened and closed according to the internal humidity and the water level of the air humidifier 160 and the fuel humidifier 140. 175 is supplied into the air humidifier 160 and the fuel humidifier 140 in accordance with the opening.

In addition, the third valve 183, the fourth valve 185, and the fifth valve 187 are selectively selected when the fuel humidifier 140, the air humidifier 160, and the fuel cell 110 are each heated to an appropriate temperature. Off to block overheating of the fuel cell 110.

Therefore, the heat generated by the hydrogen generator 120 is driven by the operation of the third valve 183, the fourth valve 185 and the fifth valve 187 fuel humidifier 140, air humidifier 160 And the fuel humidifier 140 can be supplied.

On the other hand, when the fuel cell 110 system 100 is installed in a submarine, the heat exchanger 190 is selectively operated by a user.

That is, when the fuel cell 110 needs to be cooled or when the user needs hot water, the sixth valve 196 and the seventh valve 198 are turned on and the fourth heat supply pipe 194. And the fifth heat supply pipe 192 is opened, and the heat generated from the hydrogen generator 120 and the fuel cell 110 may be used to make hot water.

The sixth valve 196 and the seventh valve 198 are turned on only when the third valve 183, the fourth valve 185, and the fifth valve 187 are turned off. It works.

This is because when the fuel humidifier 140, the air humidifier 160, and the fuel cell 110 are heated to an appropriate temperature and no further heat supply is required, the heat generated from the hydrogen generator 120 is exchanged with the heat exchanger. 190) to be supplied.

On the other hand, when the user is lowered in the water level inside the water storage tank 178 by using hot water, the water storage tank (by supplying water to the water storage tank 178 from the outside using the water supply means 176 ( 178) It is possible to increase the internal water level to an appropriate level.

The scope of the present invention is not limited to the above-described embodiments, and many other modifications based on the present invention will be possible to those skilled in the art within the scope of the present invention.

For example, in the exemplary embodiment of the present invention, the external air is introduced into the air humidifier, but if necessary, the air may be configured to be directly supplied with oxygen by communicating with an oxygen tank provided separately from the air humidifier.

In the fuel cell system provided with the hydrogen generator according to the present invention, hydrogen and heat generated in the hydrogen generator are supplied to the fuel cell, and water generated in the fuel cell is circulated to the hydrogen generator.

Therefore, since it is possible to continuously perform the production and supply of hydrogen with a small amount of water, there is an advantage that can significantly increase the hydrogen storage capacity per unit weight.

In addition, there is an advantage to build a more compact fuel cell system.

In the present invention, a heat exchanger is further provided to receive heat from the fuel cell and the hydrogen generator, and heat exchange with water.

Therefore, when applied to submarines, aircrafts, aircraft carriers, etc., where hot water is required, hot water may be supplied, thereby improving convenience of use.

Claims (10)

delete A fuel cell generating electricity by receiving hydrogen and air or oxygen, Hydrogen generating device for generating hydrogen and heat, A water recovery pipe for guiding water generated in the fuel cell to a hydrogen generator; A trap for filtering impurities contained in hydrogen generated by the hydrogen generator; A fuel humidifier for humidifying hydrogen from which impurities are removed from the trap; A fuel guide tube for guiding hydrogen humidified by the fuel humidifier to a fuel cell; An air humidifier for humidifying air or oxygen supplied to the fuel cell; Heat supply means for selectively supplying heat generated by the hydrogen generator to the fuel humidifier, the air humidifier and the fuel cell; And a heat exchanger configured to receive heat from the fuel cell and the hydrogen generator and heat exchange with water. According to claim 2, At one side of the water recovery pipe, Fuel humidifier water supply means for guiding a part of the recovered water to the fuel humidifier; A fuel cell system equipped with a hydrogen generator, characterized in that the air humidifier water supply means for guiding a part of the recovered water to the air humidifier. According to claim 2, At one side of the water recovery pipe, And a water storage tank for storing the water generated by the fuel cell. The method of claim 2, wherein the heat supply means, A first heat supply pipe guiding heat generated by the hydrogen generator to the fuel humidifier; A second heat supply pipe for guiding heat generated by the hydrogen generator to the air humidifier; And a third heat supply pipe for guiding heat generated by the hydrogen generator to the fuel cell. The method of claim 5, wherein the first heat supply pipe, the second heat supply pipe and the third heat supply pipe on one side, And a third valve, a fourth valve, and a fifth valve for selectively shielding the first heat supply pipe, the second heat supply pipe, and the third heat supply pipe. delete The method of claim 5, wherein between the fuel cell and the hydrogen generator, And a fourth heat supply pipe and a fifth heat supply pipe for guiding heat of the fuel cell and the hydrogen generator to the heat exchanger. The method of claim 8, wherein the fourth heat supply pipe and the fifth heat supply pipe on one side, And a sixth valve or a seventh valve selectively shielding the fourth heat supply pipe and the fifth heat supply pipe. The fuel cell system as claimed in claim 8, wherein when the first heat supply pipe, the second heat supply pipe, and the third heat supply pipe are opened, the fourth heat supply pipe and the fifth heat supply pipe are shielded. .

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