CN1567625A - Cooling-humidifying device for fuel cell - Google Patents
Cooling-humidifying device for fuel cell Download PDFInfo
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- CN1567625A CN1567625A CNA031300286A CN03130028A CN1567625A CN 1567625 A CN1567625 A CN 1567625A CN A031300286 A CNA031300286 A CN A031300286A CN 03130028 A CN03130028 A CN 03130028A CN 1567625 A CN1567625 A CN 1567625A
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- generator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The invention relates to a fuel cell cooling/humidifying device: there is a cooling tank arranged outside the bottom of a generator and the cooling tank holds water inside. An air supply line is composed of an external air supply pipe and a humidified-air supply pipe. The external air supply pipe supplies the air inside the cooling tank to generate air bubbles; the humidified-air supply pipe supplies the air bubbles to a cathode of the generator. As the generator works, the heat generated by it is cooled by the water in the cooling tank, thus heating the water to a certain temperature, at this moment, the supplied air will generate bubbles in the heated water, and the bubbles are supplied to the cathode by the humidified-air supply pipe. By the structure, it can complete cooling the generator and humidifying the air at the same time without single humidifier.
Description
Technical Field
The present invention relates to a fuel cell that generates electricity through an electrochemical reaction of fuel and air supplied from the outside. Further, a COOLING/HUMIDIFYING DEVICE (COOLING/HUMIDIFYING DEVICE OF FUEL CELL) which can bring about the following effects: when the generator is cooled, the water heated to a certain temperature is utilized to humidify the air.
Background
Generally, a Fuel Cell (Fuel Cell) is a device that converts energy of Fuel into electric energy. The fuel cell system generally includes an Anode (Anode) and a Cathode (Cathode) on both sides of a polymer electrolyte membrane. Electrochemical oxidation of hydrogen gas generated as a fuel in the anode (or referred to as an oxidation electrode or a fuel electrode); in the cathode (or reduction electrode or air electrode), electrochemical reduction of oxygen as an oxidizing agent is generated. At this time, electric energy is generated by the movement of the generated electricity.
Fuel cells which have been widely used recently are proton semi-permeable Membrane Fuel cells (PEMFC) and Boron Fuel Cells (BFC). In Proton semi-permeable Membrane Fuel cells (PEMFC), LNG, LPG, CH3Hydrocarbon-based (CH-based) fuels such as OH and gasoline are refined into hydrogen H in a reformer by a desulfurization step → a reforming reaction → a hydrogen refining step2And supplying gaseous hydrogen to the fuel cell. Another type of Boron Fuel Cell (BFC) is the Boron Fuel Cell, which employs BH in a solid state4 -(tetrahydroboron anion) was in the form of an aqueous solution and used as it was as a fuel.
The structure diagram of the BFC in the prior art will be briefly described with reference to the accompanying drawings.
Fig. 1 is a simplified diagram showing a structure of a fuel cell in the prior art.
As shown in fig. 1, the overall structure of the fuel cell 1 is: a fuel tank 3 is provided on one side of a generator 2 for generating electricity, and BH in an aqueous solution is contained in the fuel tank 34 -(ii) a The fuel tank 3 and the anode of the generator 2 are connected by a fuel supply line 4 and a fuel recovery line 5; a fuel pump 6 is provided in the fuel supply line 4, and the fuel pump 6 pumps fuel.
Further, an air supply line 7 and an air discharge line 8 are provided at the cathode of the generator 2, and a filter 9, an air compressor 10, and a humidifier 11 are provided in this order on the air supply line 7. The filter 9 is used for filtering air; the air compressor 10 is used for compressing air; the humidifier 11 is used to humidify air. The humidifier 11 is connected to a water tank 12 through a water supply line 13, and water can be replenished by adjusting a valve 14.
A cooling fan 15 is provided on one side of the generator 2, and the cooling fan 15 prevents the generator 2 from being overheated by heat generated from the generator 2 during power generation.
In the conventional fuel cell having the above-described structure, when the operation switch of the device is turned on, the fuel pump 6 pumps BH in the state of the aqueous solution stored in the fuel tank 34 -Bringing BH in aqueous solution4 -The fuel is supplied to the anode of the generator 2 through the fuel supply line 4, and the air compressor 10 is driven to supply air to the cathode of the generator 2 through the air supply line 7. The supplied air is first filtered by the filter 9, humidified by the humidifier 11 to a suitable humidity, and then supplied to the cathode of the generator 2 in a humidified state.
BH in an aqueous solution state supplied to the generator 2 by the above-described structure4 -And air, respectively, are electrochemically oxidized with hydrogen at the anode of the generator 2, and electrochemically reduced with oxygen at the cathode. At this time, electric energy is generated by the movement of the generated electricity, and the generated electric energy is collected by the collector plate(not shown in the drawings) as an energy source.
The reaction equation at this time is E0＝1.64V。
In the above configuration, on the other hand, the generator 2 generates heat during power generation, and if the generator temperature reaches 80 □ or more, the electrolyte membrane of the generator 2 is damaged, so that the generator 2 needs to be cooled by the cooling fan 15, and the temperature is always kept at 80 □ or less.
The prior art fuel cell 1 having the above-described structure has the following problems:
that is, the above-described prior art fuel cell 1 is provided with the humidifier 11 and the generator 2, and the cooling fan 15, respectively, separately. The humidifier 11 is used for humidifying supplied air; the generator 2 is used for generating electricity; the cooling fan 15 is used to cool the generator 2. Since the prior art fuel cell 1 is provided with the above components, there isa limit to reduce the overall size of the machine and to reduce the power consumed to drive each component.
Disclosure of Invention
The present invention has been made to solve the above-mentioned problems of the prior art fuel cell, and an object of the present invention is to provide a cooling/humidifying device for a fuel cell, which can provide the following effects: when the generator is cooled, the generator can be cooled and humidified on a single component at the same time, so that the heated water is used for humidifying the air.
In order to achieve the object of the present invention described above, a fuel cell generally includes a generator, a fuel tank, a fuel supply route, a fuel recovery route, an air supply route, and an air discharge route. The generator generates electricity through an electrochemical reaction of fuel and air; the fuel tank and the generator are arranged at a certain distance; both ends of the fuel supply line are connected to the fuel tank and an anode inlet of the generator, and supply fuel to the generator; two ends of the fuel recovery route are connected with the fuel tank and an anode outlet of the generator, and are used for recovering the fuel after the reaction from the generator; the air supply line is connected with the cathode inlet of the generator and is used for supplying air; the air exhaust route is connected to the cathode outlet of the generator and is used for exhausting the air after reaction. With respect to the fuel cell having the above structure, the present invention provides a cooling/humidifying device of a fuel cell having the following structure: a cooling tank is provided around the lower portion of the outside of the generator, and water is filled in the cooling tank to cool the generator. The air supply route is constituted by an outside air supply pipe and a humidified air supply pipe. The external air supply pipe supplies external air into the cooling tank; the humidified air supply pipe supplies air supplied through the external air supply pipe to a cathode of the generator, and air bubbles generated in water heated to a certain temperature when the generator is cooled.
In summary, the cooling/humidifying device of the fuel cell of the present invention can provide the following effects: a cooling tank is arranged around the outer side of the lower part of the generator, and water is filled in the cooling tank. The air supply route is constituted by an outside air supply pipe and a humidified air supply pipe. The external air supply pipe is used for supplying air to the inner side of the cooling tank to generate bubbles; the humidified air supply pipe is used to supply the generated air bubbles to the cathode of the generator. When the generator generates electricity, the heat generated by the generator is cooled by the water in the cooling tank, and the water is heated to a certain temperature by the cooling, and then the air supplied from the external air supply pipe to the inside of the cooling tank generates bubbles in the heated water, and the generated bubbles are supplied to the cathode of the generator through the humidified air supply pipe. With the structure, the generator can be cooled and the air can be humidified at the same time without a separate humidifier. Accordingly, the manufacturing cost is reduced with the reduction of the number of parts, and the entire size of the machine can be made compact.
Drawings
Fig. 1 is a simplified diagram showing the structure of a prior art fuel cell.
Fig. 2 shows a configuration diagram of a fuel cell equipped with a cooling/humidifying device according to a first embodiment of the present invention.
Fig. 3 shows a longitudinal sectional view of a single cell in the present invention.
Fig. 4 shows a structural view of a fuel tank of a second embodiment of the invention.
Description of the reference numerals of the main components
101: the generator 102: fuel tank
103: fuel supply route 104: fuel recovery circuit
107: air supply line 108: air discharge route
111: water 112: cooling tank
113: external air supply pipe 114: humidified air supply pipe
115: the water tank 116: water replenishing route
117: opening and closing the valve 131: contraction pipe part
132: warm water intake pipe 133: air vent (orifice)
Detailed Description
The cooling/humidifying device for a fuel cell of the present invention having the above-described structure will be described in further detail with reference to the embodiments shown in the drawings.
Fig. 2 shows a configuration diagram of a fuel cell equipped with a cooling/humidifying device according to a first embodiment of the present invention.
As shown in fig. 2, a Fuel cell 100 having a cooling/humidifying device of the present invention includes a Generator (Generator)101, a Fuel Tank (Fuel Tank)102, and a Fuel pump 105. The Generator (Generator)101 was passed through BH in an aqueous solution4 -Generating electric energy through electrochemical reaction with air; the above-mentioned fuelA Tank (Fuel Tank)102 spaced apart from the Generator (Generator)101, the Fuel Tank (Fuel Tank)102 containing an aqueous solution state BH supplied to the Anode (Anode) of the Generator 1014 -(ii) a The fuel pump 105 is provided on the fuel supply line 103, and pumps the fuel in the fuel tank 102. The fuel tank 102 is connected to an Anode (Anode) inlet of the generator 101 through the fuel supply line 103, and can supply fuel to the Anode (Anode) of the generator 101; an Anode (Anode) outlet of the generator 101 is connected to a fuel tank 102 via a fuel recovery line 104, and the fuel after the reaction can be recovered.
An air supply line 107 is provided at the Cathode (Cathode) inlet of the generator 101, and the air supply line 107 is used to supply air. An air discharge line 108 is provided at the Cathode (Cathode) outlet of the generator 101, and the air discharge line 108 is used to discharge air after the reaction. A filter 109 and an air compressor 110 are provided in the air supply line 107. The filter 109 is used for filtering air; the air compressor 110 is used to compress air.
A cooling tank 112 is provided around the lower portion of the outside of the generator 101, and the cooling tank 112 contains water 111, and the water 111 cools the generator 101. The air supply line 107 is constituted by an outside air supply pipe 113 and a humidified air supply pipe 114. The outside air supply pipe 113 is used for supplying outside air to the inside of the cooling bath 112; the humidified air supply pipe 114 supplies air bubbles generated in the cooling bath 112 by the air supplied through the outside air supply pipe 113 to the cathode of the generator 101. When the generator 101 is cooled by the above-described structure, air in the form of bubbles generated in the water 111 heated to a certain temperature can be supplied to the cathode of the generator 101.
In addition, the cooling tank 112 is connected to a separately provided water tank 115 through a water replenishing line 116, so that the cooling tank 112 can be replenished with water from the water tank 115. An open/close valve 117 is provided in the water supply line 116, and the open/close valve 117 is opened and closed by adjustment.
Fig. 3 shows a longitudinal sectional view of a single cell in the present invention.
As shown in FIG. 3, the single cell of the present invention is composed of a Membrane-Electrode assembly (MEA)
Assembly)124, a Separator plate (Separator)126 and a collector plate 127. The Membrane-Electrode Assembly (MEA) 124 is formed by combining an electrolyte Membrane 121, an anode 122 for diffusing gas, and a cathode 123; the Separator 126 is attached to both sides of the membrane-electrode assembly 124 in close contact therewith, and forms a fuel gas flow path and an oxygen-containing gas flow path 125 in the anode 122 and the cathode 123; the current collector plates 127 are provided on both sides of the separator plate 126, and form current collectors of the anode 122 and the cathode 123.
The electrolyte membrane 121 of the membrane-electrode assembly 124 is an ion exchange membrane made of a polymer material, and the electrolyte membrane 121 is typically a Nafion membrane manufactured by dupont, which functions as a carrier of hydrogen ions and prevents contact between oxygen and hydrogen; the anode 122 and the cathode 123 are supports for supporting a catalyst layer of a hydrogen gas storage alloy, and are made of porous Carbon Paper (Carbon Paper) or Carbon Cloth (Carbon Cloth), and are bonded to both sides of the electrolyte membrane 121.
The separation plate 126 is made of a dense carbon plate, and a plurality of flow channel grooves 126a for fluid are formed inside the separation plate 126.
The current collecting plate 127 has conductivity and corrosion resistance, and specifically, titanium (titanium), stainless steel, copper, and the like.
In the fuel cell equipped with the cooling/humidifying device according to the first embodiment of the present invention having the above-described configuration, when the operation switch of the device is turned on, BH in the state of the aqueous solution stored in the fuel tank 102 is turned on4 -BH in an aqueous solution pumped by the fuel pump 1054 -An anode supplied to the generator 101 through the fuel supply line 103; air is supplied to the cathode of the generator 101 through the air supply line 107, and the supplied air first passes through the air supply lineThe external air supply pipe 113 is supplied to the inside of the cooling bath 112 in which the water 111 is contained to generate bubbles, and then the generated bubbles are supplied to the cathode of the generator 101 through the humidified air supply pipe 114.
With the above-described structure, BH in an aqueous solution state is supplied to the inside of the generator 1014 -Flows along a flow path 125 formed on the outer surface of the anode 122 and diffuses; the humidified air flows along a flow path 125 formed on the outer surface of the cathode 123 and diffuses; performing electrochemical reaction on the anode 122The chemical oxidation reaction proceeds with an electrochemical reduction reaction at the cathode 123, and electric energy is generated by the movement of electricity, and the generated electric energy is concentrated on the current collecting plate 127 and used as a power source.
The above-mentioned reaction equation of the generator 101 is
Anode: E0＝1.24V
cathode: E0＝0.4V
and (3) integration: E0＝1.64V。
on the other hand, since the generator 101 generates heat when generating electricity, the generated heat is cooled by the water 111 in the cooling tank 112, and the air bubbles generated in the water 111 heated to a certain temperature are supplied to the cathode 123 of the generator 101 through the humidified air supply pipe 114 by the cooling, the humidified air can be supplied to the cathode 123 of the generator 101 without a separate humidifier.
Fig. 4 shows a structural view of a fuel tank of a second embodiment of the invention. The basic structure shown in fig. 4 is the same as that of the first embodiment shown in fig. 2.
As shown in fig. 4, a vent hole (vent) 133 is formed in the air supply line 107, and the vent hole 133 is composed of a contracted pipe portion 131 and a warm water intake pipe 132. The diameter of the contraction part 131 is reduced at a designated position; the warm water suction pipe 132 is connected to a lower side of the contraction pipe 131 in a vertical manner, and sucks warm water. When the air passes through the air vent 133 through the air supply line 107, warm water is sucked through the warm water suction pipe 132 according to the principle of orifice (orifice), the air is humidified, and the humidified air is supplied to the cathode of the generator 101.
Claims (4)
1. A fuel cell mainly includes a generator, a fuel tank, a fuel supply route, a fuel recovery route, an air supply route, and an air discharge route; the generator generates electricity through an electrochemical reaction of fuel and air; the fuel tank and the generator are arranged at a certain distance; both ends of the fuel supply line are connected to the fuel tank and an anode inlet of the generator, and supply fuel to the generator; two ends of the fuel recovery route are connected with the fuel tank and an anode outlet of the generator, and are used for recovering the fuel after the reaction from the generator; the air supply line is connected with the cathode inlet of the generator and is used for supplying air; the air discharge route is connected with the cathode outlet of the generator and used for discharging air after reaction; it is characterized by also comprising:
a cooling/humidifying device of a fuel cell, which is provided with a cooling tank around the lower part of the outer side of the generator, wherein the cooling tank is filled with water which is used for cooling the generator; the air supply route is composed of an external air supply pipe and a humidifying air supply pipe;
the external air supply pipe supplies external air into the cooling tank;
the humidified air supply pipe supplies air bubbles, which are generated from water heated to a certain temperature by the air supplied through the external air supply pipe when cooling the generator, to the cathode of the generator.
2. The fuel cell according to claim 1, characterized in that:
the fuel is a tetrahydroboron anion in an aqueous solution state.
3. The fuel cell according to claim 1, characterized in that:
the air supply path is provided with a vent, and the vent is composed of a shaft tube and a warm water suction tube; the diameter of the shaft tube at the appointed position is reduced; the warm water suction pipe is vertically connected to a lower side of the shaft pipe to suck warm water.
4. The fuel cell according to claim 1, characterized in that:
the cooling tank also comprises a water tank, a water supplementing route and an opening and closing valve;
the water tank is filled with water and the water is supplemented to the cooling tank;
the water replenishing route is used for supplying water in the water tank;
the open-close valve is arranged on the water supply line and used for adjusting water supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031300286A CN100399615C (en) | 2003-06-17 | 2003-06-17 | Cooling-humidifying device for fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031300286A CN100399615C (en) | 2003-06-17 | 2003-06-17 | Cooling-humidifying device for fuel cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1567625A true CN1567625A (en) | 2005-01-19 |
| CN100399615C CN100399615C (en) | 2008-07-02 |
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ID=34469412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031300286A Expired - Fee Related CN100399615C (en) | 2003-06-17 | 2003-06-17 | Cooling-humidifying device for fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100399615C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576270A (en) * | 2014-10-29 | 2016-05-11 | 现代自动车株式会社 | Manifold device of fuel cell stack |
| CN109478663A (en) * | 2016-12-27 | 2019-03-15 | 翰昂汽车零部件有限公司 | Humidification and cooling equipment for fuel cell |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06325780A (en) * | 1993-05-10 | 1994-11-25 | Mitsubishi Heavy Ind Ltd | Fuel cell system |
| JPH0729591A (en) * | 1993-07-16 | 1995-01-31 | Aisin Aw Co Ltd | Solid high polymer fuel cell power generating system |
| DE59601518D1 (en) * | 1995-09-11 | 1999-04-29 | Siemens Ag | METHOD FOR OPERATING A FUEL CELL PLANT AND FUEL CELL PLANT FOR CARRYING OUT THE METHOD |
| US6207308B1 (en) * | 1999-04-20 | 2001-03-27 | International Fuel Cells, Llc | Water treatment system for a fuel cell assembly |
| TW496010B (en) * | 2000-03-23 | 2002-07-21 | Sanyo Electric Co | Solid high molcular type fuel battery |
-
2003
- 2003-06-17 CN CNB031300286A patent/CN100399615C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576270A (en) * | 2014-10-29 | 2016-05-11 | 现代自动车株式会社 | Manifold device of fuel cell stack |
| US10476088B2 (en) | 2014-10-29 | 2019-11-12 | Hyundai Motor Company | Manifold device of fuel cell stack |
| CN105576270B (en) * | 2014-10-29 | 2019-11-12 | 现代自动车株式会社 | The manifolding of fuel cell pack |
| CN109478663A (en) * | 2016-12-27 | 2019-03-15 | 翰昂汽车零部件有限公司 | Humidification and cooling equipment for fuel cell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100399615C (en) | 2008-07-02 |
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Granted publication date: 20080702 |