CN100414755C - Method for reasonably arranging positive and negative lead wires of integrated fuel cell - Google Patents

Method for reasonably arranging positive and negative lead wires of integrated fuel cell Download PDF

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CN100414755C
CN100414755C CNB2005100260029A CN200510026002A CN100414755C CN 100414755 C CN100414755 C CN 100414755C CN B2005100260029 A CNB2005100260029 A CN B2005100260029A CN 200510026002 A CN200510026002 A CN 200510026002A CN 100414755 C CN100414755 C CN 100414755C
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fuel cell
negative
modules
group
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CN1866597A (en
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胡里清
夏建伟
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State Grid Shanghai Electric Power Co Ltd
Shanghai Shenli Technology Co Ltd
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Shanghai Shen Li High Tech Co Ltd
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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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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Abstract

The present invention relates to a method for reasonably arranging positive and negative leading wires of an integrated fuel cell, which comprises the following steps: all guide polar plates in two electric stack modules in the same group at the left sides and the right sides of fuel cells are processed into guide polar plates which are completely the same, the orientation of positive poles and negative poles of all single cells are completely consistent, and in this way, the two modules can be directly connected in series by respective flow collecting mother plates; guide polar plates in fuel cells of two electric stack modules of another adjacent group are processed into guide polar plates which are completely the same; but the guide polar plates are processed in a mirror image mode with the guide polar plates of the fuel cells in the adjacent group; the orientation and the arrangement of the positive poles and the negative poles of all the single cells in the group are completely consistent, but the orientation of the positive poles and the negative poles is just opposite to the orientation of the positive poles and the negative poles of the single cells of the adjacent group. In this way, the positive poles and the negative poles of the two adjacent groups of electric stack modules can be easily connected in series by the respective flow collecting mother plates, positive and negative leading wires are positioned at the same side of the whole electric stack, and the distance is minimized in spatial connection.

Description

A kind of favorably situated method of positive and negative lead wires of integrated fuel cell that makes
Technical field
The present invention relates to fuel cell, relate in particular to a kind of favorably situated method of positive and negative lead wires of integrated fuel cell that makes.
Background technology
Electrochemical fuel cell is a kind of device that hydrogen and oxidant can be changed into electric energy and product.The internal core parts of this device are membrane electrode (Membrane Electrode Assembly are called for short MEA), and membrane electrode (MEA) is made up of as carbon paper a proton exchange membrane, two porous conductive materials of film two sides folder.The catalyst that contains the initiation electrochemical reaction of even tiny dispersion on two boundary faces of film and carbon paper is as the metal platinum catalyst.The membrane electrode both sides can electrochemistry will take place with conductive body to be sent out and answers the electronics that generates in the process, draws by external circuit, constitutes current circuit.
At the anode tap of membrane electrode, fuel can pass porousness diffusion material (carbon paper) by infiltration, and electrochemical reaction takes place on catalyst surface, lose electronics, form cation, cation can pass proton exchange membrane by migration, arrives the other end cathode terminal of membrane electrode.At the cathode terminal of membrane electrode, contain the gas of oxidant (as oxygen), as air, pass porousness diffusion material (carbon paper), and the generation electrochemical reaction obtains electronics on catalyst surface, forms anion by infiltration.The cation of coming in the anion and the anode tap migration of cathode terminal formation reacts, and forms product.
Adopting hydrogen is fuel, and the air that contains oxygen is in the Proton Exchange Membrane Fuel Cells of oxidant (or pure oxygen is an oxidant), and fuel hydrogen has just produced hydrogen cation (or being proton) in the catalytic electrochemical reaction of anode region.Proton exchange membrane helps the hydrogen cation to move to the cathodic region from the anode region.In addition, proton exchange membrane is separated the air-flow and the oxygen containing air-flow of hydrogen fuel, they can not mixed mutually and produces explosion type reaction.
In the cathodic region, oxygen obtains electronics on catalyst surface, forms anion, and moves the hydrogen cation reaction of coming, reaction of formation product water with the anode region.In the Proton Exchange Membrane Fuel Cells that adopts hydrogen, air (oxygen), anode reaction and cathode reaction can be expressed in order to following equation:
Anode reaction: H 2→ 2H ++ 2e
Cathode reaction: 1/2O 2+ 2H ++ 2e → H 2O
In typical Proton Exchange Membrane Fuel Cells, membrane electrode (MEA) generally all is placed in the middle of the pole plate of two conductions, and quarter is milled by die casting, punching press or machinery in the surface that every guide plate contacts with membrane electrode, and formation is the guiding gutter of one or more at least.These guide plates can above metal material pole plate, also can be the pole plate of graphite material.Water conservancy diversion duct on these guide plates and guiding gutter import fuel and oxidant the anode region and the cathodic region on membrane electrode both sides respectively.In the structure of a Proton Exchange Membrane Fuel Cells monocell, only there is a membrane electrode, the membrane electrode both sides are respectively the baffler of anode fuel and the baffler of cathode oxidant.These bafflers are both as current collector plate, and also as the mechanical support on membrane electrode both sides, the guiding gutter on the baffler acts as a fuel again and enters the passage of anode, cathode surface with oxidant, and as the passage of taking away the water that generates in the fuel cell operation process.
In order to increase the gross power of whole Proton Exchange Membrane Fuel Cells, two or more monocells can be connected into battery pack or be unified into battery pack by the mode that tiles usually by straight folded mode.In straight folded, in-line battery pack, can there be guiding gutter on the two sides of a pole plate, and wherein one side can be used as the anode guide face of a membrane electrode, and another side can be used as the cathode diversion face of another adjacent membranes electrode, and this pole plate is called bipolar plates.A series of monocell connects together by certain way and forms a battery pack.Battery pack tightens together by front end-plate, end plate and pull bar usually and becomes one.
A typical battery stack generally includes: the water conservancy diversion import and the flow-guiding channel of (1) fuel and oxidant gas are distributed to fuel (hydrogen-rich gas that obtains as hydrogen, methyl alcohol or methyl alcohol, natural gas, gasoline) and oxidant (mainly being oxygen or air) in the guiding gutter of each anode, cathode plane equably after reforming; (2) import and export and the flow-guiding channel of cooling fluid (as water) are evenly distributed to cooling fluid in each battery pack inner cooling channel, and the heat absorption that hydrogen in the fuel cell, the exothermic reaction of oxygen electrochemistry are generated is also taken battery pack out of and dispelled the heat; (3) outlet of fuel and oxidant gas and corresponding flow-guiding channel, fuel gas and oxidant gas are when discharging, and portability goes out the liquid that generates in the fuel cell, the water of steam state.Usually, the import and export of all fuel, oxidant, cooling fluid are all opened on the end plate of fuel battery or on two end plates.
Proton Exchange Membrane Fuel Cells both can be used as the dynamical system of delivery vehicles such as car, ship, again can be as portable or fixed power station.
Fuel cell generation mainly supports operational system to form by fuel cell pack and battery pile.As the application of car, ship power or power station powerful fuel cell generation aspect, requirement can be exported tens kilowatts, even the power of output hundreds of kilowatt.To powerful like this output requirement, the fuel cell pack and support operational system of corresponding high-power output must be arranged.
The fuel cell pack engineering design and the manufacturing of high-power output, analyze from technology and manufacturing cost aspect, generally can't adopt a huge high-power single heaping method that constitutes by the many blocks of positive plates of large active surface, integrate the method that reaches high-power output requirement by a plurality of middle low power fuel battery stack modules but adopt.
Existing extensive, powerful fuel cell as shown in Figure 1, wherein 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 is current collector motherboard on each battery pile module, makes both positive and negative polarity.17 is the total afflux of central authorities, water conservancy diversion panel.A is first pair of corresponding two Battery packs heap module, and B is second pair of corresponding two Battery packs heap module, and C, D are the 3rd, the 4th pair of corresponding two Battery packs heap module.Both positive and negative polarity is connected to 3 and connects with 2 between existing each pile, and 1 connects with 8, and 7 connect with 6, and 5 connect with 12, and 11 connect with 10, and 9 connect with 16, and 15 connect with 14, and last 13 and 4 current collector motherboards are as the outside output of whole integral type fuel battery both positive and negative polarity.As can be seen, some both positive and negative polarity series connection lead-in wires of this integral type fuel battery are in the both sides of pile, and it is more that it crosses over free-standing galvanic pile module quantity, and the lead-in wire spatial placement is very unreasonable.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of favorably situated method of positive and negative lead wires of integrated fuel cell that makes for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions: a kind of favorably situated method of positive and negative lead wires of integrated fuel cell that makes, it is characterized in that, this method comprises each guide plate processing in two galvanic pile modules of same group of the fuel cell left and right sides just the same, and make each monocell both positive and negative polarity orientation in full accord, like this these two modules just can be directly flow-collection mother-board by separately be connected in series; And each guide plate processing of fuel cell is just the same in two galvanic pile modules of another adjacent group, but but become mirror image processing with each guide plate of fuel cell in the adjacent set, though make each monocell both positive and negative polarity orientation in this group, arrangement in full accord, but it is just the opposite with the both positive and negative polarity orientation of adjacent set, this two adjacent groups galvanic pile module just can be easy to by flow-collection mother-board separately realize that both positive and negative polarity is connected in series like this, make positive and negative lead wires be in the homonymy of whole stack, and on the space connects, realize distance minimization.
Compared with prior art, the present invention can make the both positive and negative polarity wiring space arrangement of high-power integrated fuel cell pile reasonable, can arrange the position of its current output terminal according to actual needs.
Description of drawings
Fig. 1 is that existing integrated fuel cell pile positive and negative lead wires is arranged schematic diagram;
Fig. 2 arranges schematic diagram for integrated fuel cell pile positive and negative lead wires of the present invention;
Fig. 3 is the structural representation of integrated fuel cell pile air flow guide polar plate of the present invention;
Fig. 4 is the structural representation of integrated fuel cell pile hydrogen flow guide polar plate of the present invention;
Fig. 5 is the structural representation that is the air flow guide polar plate of mirror image processing with Fig. 3;
Fig. 6 is the structural representation that is the hydrogen flow guide polar plate of mirror image processing with Fig. 4.
Embodiment
Shown in Fig. 2～6, a kind of favorably situated method of positive and negative lead wires of integrated fuel cell that makes, it is characterized in that, this method comprises each guide plate processing in two galvanic pile modules of same group of the fuel cell left and right sides just the same, and make each monocell both positive and negative polarity orientation in full accord, like this these two modules just can be directly flow-collection mother-board by separately be connected in series; And each guide plate processing of fuel cell is just the same in two galvanic pile modules of another adjacent group, but but become mirror image processing with each guide plate of fuel cell in the adjacent set, though make each monocell both positive and negative polarity orientation in this group, arrangement in full accord, but it is just the opposite with the both positive and negative polarity orientation of adjacent set, this two adjacent groups galvanic pile module just can be easy to by flow-collection mother-board separately realize that both positive and negative polarity is connected in series like this, make positive and negative lead wires be in the homonymy of whole stack, and on the space connects, realize distance minimization.
In the present embodiment, the processing method of each guide plate in two galvanic pile modules in the same group of left and right sides, and through the stack of a plurality of monocells in heaps after, each monocell both positive and negative polarity orientation is in full accord.
Fig. 3, Fig. 4 are the positive and negatives of flow-guide double-pole plate in a kind of 10-20KW galvanic pile module, are of a size of 206 * 206 * 1.5mm, and the front is a fuel hydrogen water conservancy diversion field manuscript, and reverse side is an oxidant air conducting field manuscript; Built-in cooling fluid water conservancy diversion interlayer in the middle of the bipolar plates (figure does not show).
When this many bipolar plates and " three-in-one " electrode were in heaps by overlapped in series, each monocell both positive and negative polarity orientation was in full accord.
As Fig. 5, shown in Figure 6, two each bafflers of galvanic pile module in the adjacent same group of left and right sides become mirror image processing with baffler among Fig. 3, Fig. 4, and through the stack of a plurality of monocells in heaps after, though each monocell both positive and negative polarity orientation is in full accord, just with above-mentioned first group in positive and negative opposite orientation.
In Fig. 2, label 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 is made both positive and negative polarity for the current collector motherboard on each battery pile module of expression.17 is the total afflux motherboards of central authorities.A is first pair of corresponding two Battery packs heap module, and B is second pair of corresponding two Battery packs heap module, and C, D are the 3rd, the 4th pair of corresponding two Battery packs heap module.Both positive and negative polarity is connected to 3 and connects with 2 between each pile of the present invention, and 1 connects with 5, and 6 connect with 7, and 8 connect with 12, and 11 connect with 10, and 9 connect with 13, and 14 connect with 15, and last 16 and 4 current collector motherboards are as the outside output of whole integral type fuel battery both positive and negative polarity.As can be seen, the positive and negative lead-in wire of this integral type fuel battery is at the whole stack homonymy, and it is more reasonable that space spans is arranged than original lead-in wire.

Claims (1)

1. one kind can make the favorably situated method of positive and negative lead wires of integrated fuel cell, it is characterized in that, this method comprises that two battery pile modules with the corresponding setting in total current-collecting panel both sides of the central authorities of fuel cell pack are made as same group, each guide plate processing is just the same in these two galvanic pile modules of same group, and make each monocell both positive and negative polarity orientation in full accord, like this these two modules just can be directly flow-collection mother-board by separately be connected in series; And each guide plate processing of fuel cell is just the same in two galvanic pile modules of another adjacent group, but but become mirror image processing with each guide plate of fuel cell in the adjacent set, though make each monocell both positive and negative polarity orientation in this group, arrangement in full accord, but it is just the opposite with the both positive and negative polarity orientation of adjacent set, this two adjacent groups galvanic pile module just can be easy to by flow-collection mother-board separately realize that both positive and negative polarity is connected in series like this, make positive and negative lead wires be in the homonymy of whole stack, and on the space connects, realize distance minimization.
CNB2005100260029A 2005-05-20 2005-05-20 Method for reasonably arranging positive and negative lead wires of integrated fuel cell Active CN100414755C (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1276633A (en) * 2000-07-27 2000-12-13 钟家轮 Fuel cell with more membrane electrodes on one membrane and its preparing process
WO2001003215A1 (en) * 1999-06-30 2001-01-11 Ballard Power Systems Inc. Method and apparatus for increasing the temperature of a fuel cell with polymer electrolyte
US20040053132A1 (en) * 2002-09-12 2004-03-18 Smedley Stuart I. Improved fuel for a zinc-based fuel cell and regeneration thereof
CN1527426A (en) * 2003-03-07 2004-09-08 上海神力科技有限公司 Fuel cell capable of increasing its output current for several times and lowering its output voltage for several times

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001003215A1 (en) * 1999-06-30 2001-01-11 Ballard Power Systems Inc. Method and apparatus for increasing the temperature of a fuel cell with polymer electrolyte
CN1276633A (en) * 2000-07-27 2000-12-13 钟家轮 Fuel cell with more membrane electrodes on one membrane and its preparing process
US20040053132A1 (en) * 2002-09-12 2004-03-18 Smedley Stuart I. Improved fuel for a zinc-based fuel cell and regeneration thereof
CN1527426A (en) * 2003-03-07 2004-09-08 上海神力科技有限公司 Fuel cell capable of increasing its output current for several times and lowering its output voltage for several times

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Address before: 201401, Fengxian Shanghai Industrial Development Zone, dragon Yang Industrial Park, an international 27

Patentee before: Shanghai Shen-Li High Tech Co., Ltd.