CN2544418Y - High-efficient humidifier for fuel cell - Google Patents
High-efficient humidifier for fuel cell Download PDFInfo
- Publication number
- CN2544418Y CN2544418Y CN02217654U CN02217654U CN2544418Y CN 2544418 Y CN2544418 Y CN 2544418Y CN 02217654 U CN02217654 U CN 02217654U CN 02217654 U CN02217654 U CN 02217654U CN 2544418 Y CN2544418 Y CN 2544418Y
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- China
- Prior art keywords
- shell
- inner container
- fuel cell
- air inlet
- air outlet
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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
Abstract
The utility model relates to an efficient humidification device used for fuel cell, comprising a shell, an inner container, and an electromotor; the shell and inner container are column shape, a moist air outlet and a moist air inlet are respectively arranged at the left and right sides of the shell and the inner container, and a dry air inlet and a dry air outlet are respectively arranged at the left and right sides of the top part of the shell and the inner container. Fillings are arranged inside of the inner container, and a baffle plate is arranged at the middle of the inner container, and the electromotor drives the inner container rotating through the transmission shaft. Compared with the prior art, the utility model has the advantages of low operation cost and convenient operation, etc.
Description
Technical Field
The present invention relates to fuel cell auxiliary equipment, and more particularly to a high efficiency humidifier for fuel cell.
Background
An electrochemical fuel cell is a device that is capable of converting hydrogen fuel and an oxidant into electrical energy and reaction products. The inner core component of the device is a Membrane Electrode (MEA), which is composed of a proton exchange Membrane and two porous conductive materials sandwiched between two surfaces of the Membrane, such as carbon paper. The membrane contains a uniform and finely dispersed catalyst, such as a platinum metal catalyst, for initiating an electrochemical reaction at the interface between the membrane and the carbon paper. The electrons generated in the electrochemical reaction process can be led out by conductive objects at two sides of the membrane electrode through an external circuit to form a current loop.
At the anode end of the membrane electrode, fuel can permeate through a porous diffusion material (carbon paper) and undergo electrochemical reaction on the surface of a catalyst to lose electrons to form positive ions, and the positive ions can pass through a proton exchange membrane through migration to reach the cathode end at the other end of the membrane electrode. At the cathode end of the membrane electrode, a gas containing an oxidant (e.g., oxygen), such as air, forms negative ions by permeating through a porous diffusion material (carbon paper) and electrochemically reacting on the surface of the catalyst to give electrons. The anions formed at the cathode end react with the positive ions transferred from the anode end to form reaction products.
In a pem fuel cell using hydrogen as the fuel and oxygen-containing air as the oxidant (or pure oxygen as the oxidant), the catalytic electrochemical reaction of the fuel hydrogen in the anode region produces hydrogen cations(or protons). The proton exchange membrane assists the migration of positive hydrogen ions from the anode region to the cathode region. In addition, the proton exchange membrane separates the hydrogen-containing fuel gas stream from the oxygen-containing gas stream so that they do not mix with each other to cause explosive reactions.
In the cathode region, oxygen gains electrons on the catalyst surface, forming negative ions, which react with the hydrogen positive ions transported from the anode region to produce water as a reaction product. In a proton exchange membrane fuel cell using hydrogen, air (oxygen), the anode reaction and the cathode reaction can be expressed by the following equations:
and (3) anode reaction:
and (3) cathode reaction:
in a typical pem fuel cell, a Membrane Electrode (MEA) is generally placed between two conductive plates, and the surface of each conductive plate in contact with the MEA is die-cast, stamped, or mechanically milled to form at least one or more channels. The conductive film electrode plates can be plates made of metal materials or plates made of graphite materials. The diversion pore canals and the diversion grooves on the membrane electrode guiding plates respectively guide the fuel and the oxidant into the anode area and the cathode area on two sides of the membrane electrode. In the structure of a single proton exchange membrane fuel cell, only one membrane electrode is arranged, and a flow guide polar plate of anode fuel and a flow guide polar plate of cathode oxidant are respectively arranged on two sides of the membrane electrode. The flow guide polar plates are used as current collector plates and mechanical supports at two sides of the membrane electrode, and the flow guide grooves on the flow guide polar plates are also used as channels for fuel and oxidant to enter the surfaces of the anode and the cathode and as channels for taking away water generated in the operation process of the fuel cell.
In order to increase the total power of the whole proton exchange membrane fuel cell, two or more single cells can be connected in series to form a battery pack in a straight-stacked manner or connected in a flat-laid manner to form a battery pack. In the direct-stacking and serial-type battery pack, two surfaces of one polar plate can be provided with flow guide grooves, wherein one surface can be used as an anode flow guide surface of one membrane electrode, and the other surface can be used as a cathode flow guide surface of another adjacent membrane electrode, and the polar plate is called a bipolar plate. A series of cells are connected together in a manner to form a battery pack. The battery pack is generally fastened together into one body by a front end plate, a rear end plate and a tie rod.
A typical battery pack generally includes: (1) the fuel (such as hydrogen, methanol or hydrogen-rich gas obtained by reforming methanol, natural gas and gasoline) and the oxidant (mainly oxygen or air) are uniformly distributed in the diversion trenches of the anode surface and the cathode surface; (2) cooling fluid (such as water) is uniformly distributed into cooling channels in each battery pack through an inlet and an outlet of the cooling fluid and a flow guide channel, and heat generated by electrochemical exothermic reaction of hydrogen and oxygen in the fuel cell is absorbed and taken out of the battery pack for heat dissipation; (3) the outlets of the fuel gas and the oxidant gas and the corresponding flow guide channels can carry out liquid and vapor water generated in the fuel cell when the fuel gas and the oxidant gas are discharged. Typically, all fuel, oxidant, and cooling fluid inlets and outlets are provided in one or both end plates of the fuel cell stack.
The proton exchange membrane fuel cell can be used as a power system of all vehicles, ships and other vehicles, and can also be used as a portable, movable and fixed power generation device.
The core component of the proton exchange membrane fuel cell is a membrane electrode, and the proton exchange membrane is the core component of the membrane electrode.
At present, a proton exchange membrane used in a membrane electrode of a proton exchange membrane fuel cell needs water molecules to keep moisture in the running process of the cell, and only hydrated protons can freely pass through the proton exchange membrane and reach the cathode end of the electrode from the anode end of the electrode to participate in electrochemical reaction. Otherwise, when a large amount of dry air is supplied to the fuel cell and leaves the fuel cell, water molecules in the proton exchange membrane are easily carried away, and protons cannot pass through the proton exchange membrane, so that the internal resistance of the electrode is increased sharply, and the performance of the cell is decreased sharply. The air supplied to the fuel cell generally needs to be humidified to increase the relative humidity of the air entering the fuel cell to prevent water loss from the proton exchange membrane.
Currently, there are two main types of humidification devices applied to proton exchange membrane fuel cells:
(1) before the dry air and the purified water enter the fuel cell, the dry air and the purified water directly collide with each other through the humidifying device, so that water molecules and air molecules are uniformly mixed gas air and water molecules, and when the water molecules enter the fuel cell, the air reaches a certain relative humidity.
(2)The dry air and the purified water are not directly contacted with each other in the humidifying device before entering the fuel cell, but are separated by a membrane which can allow water molecules to freely permeate but not allow gas molecules to permeate, when the dry air flows through one side of the membrane and the purified water flows through the other side of the membrane, the water molecules can automatically permeate through the other side of the membrane from one side of the membrane, so that the air molecules and the water molecules are mixed to reach air with certain relative humidity. Such membranes may be proton exchange membranes such as nafion membranes from dupont, and the like.
The above two moisturizing methods have the following insurmountable drawbacks:
(1) the two humidifying devices need to provide purified water additionally, and the supply of the purified water is mainly controlled by devices such as a water pump, a pipeline and the like, so that the complexity of the humidifying device is greatly increased, and the energy consumption is increased.
(2) When purified water is supplied to the humidifying device, the purified water is consumed continuously and must be supplied in time, which causes high cost and inconvenient operation of the fuel cell operation process.
Disclosure of Invention
The present invention is directed to overcome the above-mentioned drawbacks of the prior art, and to provide a low-cost, easy-to-operate, high-efficiency humidifier for fuel cell.
The purpose of the utility model can be realized through the following technical scheme: an efficient humidifying device for fuel cell is characterized by comprising a shell, an inner container and a motor; the shell is a cylindricalbody, the left side and the right side of the bottom of the shell are respectively provided with a wet air outlet and a wet air inlet, the left side and the right side of the top of the shell are respectively provided with a dry air inlet and a dry air outlet, and the center of the top of the shell is also provided with a central hole; the inner container is arranged in the shell and is also a cylindrical body corresponding to the shell, the left side and the right side of the bottom of the inner container are respectively provided with an air outlet and an air inlet corresponding to a wet air outlet and a wet air inlet of the shell, the left side and the right side of the top of the inner container are respectively provided with an air inlet and an air outlet corresponding to a dry air inlet and a dry air outlet of the shell, a partition plate is arranged in the middle of the inner container and divides the inner container into a left half part and a right half part which are equal, and hydrophilic porous fillers are arranged in the left half part and the right half part of the partition plate; the motor is externally arranged at the top of the shell, and a transmission shaft of the motor penetrates through a central hole in the center of the top of the shell and is fixedly connected with the inner container; the motor drives the inner container to rotate through a transmission shaft of the motor; the wet air outlet at the bottom of the shell is externally connected with the air inlet of the fuel cell, and the wet air inlet at the bottom of the shell is externally connected with the air outlet of the fuel cell; when the residual air and generated water exhausted by the fuel cell enter from the wet air inlet of the humidifying device, the residual air and generated water move forward along the right half part of the liner, the filler arranged in the liner can allow the air to pass through to intercept the water, after the water reaches a saturated state, the motor drives the liner to rotate 180 degrees, the righthalf liner rotates to the left half part, and after the dry air enters from the dry air inlet of the humidifying device, the dry air moves forward along the left half part of the liner and just meets the intercepted water, and the wet air is changed into the wet air and flows out from the wet air outlet to enter the fuel cell.
The shell and the inner container are cylinders.
And a sealing ring is arranged between the air inlet and the air outlet corresponding to the outer shell and the inner container.
The transmission shaft of the motor penetrates through the center of the inner container and is welded with the inner container into a whole.
The center of the bottom of the shell is provided with a bearing seat, and the top end of the transmission shaft is arranged in the bearing seat.
The filler can be selected from one or more of silica gel, porous ceramic or porous glass, or other water-absorbing materials.
The utility model discloses owing to adopted above technical scheme, be about to the water that fuel cell operation process generated and arrange humidification device used repeatedly, consequently need not plus extra high energy consumption power equipment, like water pump etc. also need not supply the pure water to this humidification device to can the energy saving, greatly reduced fuel cell's running cost simultaneously still makes the process operation very convenient.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1, a high efficiency humidifying device for a fuel cell includes a housing 1, an inner container 2, a motor 3; the shell 1 is a cylinder, the left side and the right side of the bottom of the shell are respectively provided with a wet air outlet 11 and a wet air inlet 12, the left side and the right side of the top of the shell are respectively provided with a dry air inlet 13 and a dry air outlet 14, the center of the top of the shell is also provided with a central hole 15, and the center of the bottom of the shell is provided with a bearing seat (not shown); the inner container 2 is arranged in the shell 1 and is also a cylinder corresponding to the shell, the left and right sides of the bottom of the inner container 2 are respectively provided with an air outlet 21 and an air inlet 22 corresponding to the wet air outlet 11 and the wet air inlet 12 of the shell, sealing rings (not shown) are arranged between the air inlets and outlets 11 and 21 corresponding to the shell 1 and the inner container 2 and between the air inlets and outlets 12 and 22 corresponding to the dry air inlet 13 and the dry air outlet 14 of the shell, the left and right sides of the top of the inner container 2 are respectively provided with an air inlet 23 and an air outlet 24 corresponding to the dry air inlet 13 and the dry air outlet 14 of the shell, sealing rings (not shown) are also arranged between the dry air inlets and outlets 13 and 23 corresponding to the shell 1 and the inner container 2 and between the dry air inlets and outlets 14 and 24 corresponding to the inner container 2, a partition plate 25 is arranged in the middle of the inner container 2, the partition plate 25 divides the inner container into, the filler 26 is selected from one or more of silica gel, porous ceramic or porous glass; the motor 3 is arranged at the top of the shell 1, a transmission shaft 31 of the motor passes through a central hole 15 at the center of the top of the shell and the center of the inner container 2 and is welded with the inner container 2 into a whole, the top end of the transmission shaft 31 is arranged in a bearing seat at the bottom of the shell, and the motor 3 drives the inner container 2 to rotate through the transmission shaft 31; the wet air outlet 11 at the bottom of the housing is externally connected with an air inlet 41 of the fuel cell 4, and the wet air inlet 12 at the bottom of the housing is externally connected with an air outlet 42 of the fuel cell.
Air enters the fuel cell from an inlet 41 of the fuel cell 4, after electrochemical reaction, partial oxygen molecules in the air are converted into water molecules and excess unreacted air to be discharged out of the fuel cell from an outlet 42 of the fuel cell, after residual air and generated water discharged by the fuel cell enter from a wet air inlet 12 of the humidifying device, the residual air and the generated water advance along the right half part of the liner, the filler 26 arranged in the liner can allow the air to pass through to intercept the water, after the residual air and the generated water reach a saturated state, the motor 3 drives the liner 2 to rotate 180 degrees, the right half liner rotates to the left half part, after dry air enters from a dry air inlet 13 of the humidifying device, the dry air advances along the left half part of the liner, just meets with the intercepted water, and becomes wet air to enter the fuel cell from a wet air outlet 11.
The motor 3 rotates 180 degrees constantly at regular intervals, when dry air enters from the air inlet 13, the dry air can meet the water generated by the trapped fuel cell to achieve the aim of humidification, and the humidified air is discharged from the air outlet 11 of the humidification device and then enters the fuel cell to carry out electrochemical reaction; while water exhausted from the fuel cell can always be trapped in the humidifier and the remaining air exits the humidifier through the air outlet 14.
Claims (6)
1. A high-efficiency humidifying device for a fuel cell, which is characterized by comprising a shell (1), an inner container (2) and a motor (3); the shell (1) is a cylindrical body, the left side and the right side of the bottom of the shell are respectively provided with a wet air outlet (11) and a wet air inlet (12), the left side and the right side of the top of the shell are respectively provided with a dry air inlet (13) and a dry air outlet (14), and the center of the top of the shell is also provided with a central hole (15); the inner container (2) is arranged in the shell (1) and is also a cylindrical body corresponding to the shell, the left side and the right side of the bottom of the inner container are respectively provided with an air outlet (21) and an air inlet (22) corresponding to the wet air outlet (11) and the wet air inlet (12) of the shell, the left side and the right side of the top of the inner container are respectively provided with an air inlet (23) and an air outlet (24) corresponding to the dry air inlet (13) and the dry air outlet (14) of the shell, the middle of the inner container (2) is provided with a partition plate (25), the inner container is divided into a left half part and a right half part which are equal by the partition plate (25), and hydrophilic porous fillers (26) are arranged in the left half part and the right half part; the motor (3) is arranged on the top of the shell (1) in an external mode, and a transmission shaft (31) of the motor penetrates through a center hole (15) in the center of the top of the shell and is fixedly connected with the inner container (2); the motor (3) drives the inner container (2) to rotate through a transmission shaft (31) of the motor; the wet air outlet (11) at the bottom of the shell is externally connected with the air inlet of the fuel cell, and the wet air inlet (12) at the bottom of the shell is externally connected with the air outlet of the fuel cell.
2. The high efficiency humidifying device for fuel cell as claimed in claim 1, wherein the housing (1) and the inner container (2) are cylindrical.
3. The high efficiency humidifier for fuel cell as claimed in claim 1, wherein a sealing ring is provided between the air inlet and outlet corresponding to the outer casing (1) and the inner container (2).
4. The high-efficiency humidifying device for the fuel cell as claimed in claim 1, wherein the transmission shaft (31) of the motor is arranged in the center of the inner container in a penetrating way and is welded with the inner container into a whole.
5. The high efficiency humidifier for fuel cell as claimed in claim 4, wherein a bearing seat is provided at the center of the bottom of said housing (1), and the top end of said driving shaft (31) is provided in said bearing seat.
6. A high efficiency humidifier for fuel cell as claimed in claim 1, wherein said filler is selected from one or more of silica gel, porous ceramic or porous glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02217654U CN2544418Y (en) | 2002-05-24 | 2002-05-24 | High-efficient humidifier for fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02217654U CN2544418Y (en) | 2002-05-24 | 2002-05-24 | High-efficient humidifier for fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2544418Y true CN2544418Y (en) | 2003-04-09 |
Family
ID=33696424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02217654U Expired - Fee Related CN2544418Y (en) | 2002-05-24 | 2002-05-24 | High-efficient humidifier for fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2544418Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320678C (en) * | 2002-05-24 | 2007-06-06 | 上海神力科技有限公司 | High effect humidifying device used for fuel battery |
| CN100461521C (en) * | 2005-11-23 | 2009-02-11 | 通用汽车环球科技运作公司 | Water management of pem fuel cell stacks using surface active agents |
| CN106413862A (en) * | 2014-06-02 | 2017-02-15 | 大众汽车有限公司 | Humidifier, plate, device, and motor vehicle |
-
2002
- 2002-05-24 CN CN02217654U patent/CN2544418Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1320678C (en) * | 2002-05-24 | 2007-06-06 | 上海神力科技有限公司 | High effect humidifying device used for fuel battery |
| CN100461521C (en) * | 2005-11-23 | 2009-02-11 | 通用汽车环球科技运作公司 | Water management of pem fuel cell stacks using surface active agents |
| CN106413862A (en) * | 2014-06-02 | 2017-02-15 | 大众汽车有限公司 | Humidifier, plate, device, and motor vehicle |
| CN106413862B (en) * | 2014-06-02 | 2020-04-24 | 奥迪股份公司 | Humidifier, plate, device and motor vehicle |
| US10971740B2 (en) | 2014-06-02 | 2021-04-06 | Audi Ag | Humidifier, plate, device, and motor vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |