CN100428551C - Liquid cooled proton exchange membrane fuel cell - Google Patents
Liquid cooled proton exchange membrane fuel cell Download PDFInfo
- Publication number
- CN100428551C CN100428551C CNB200610134003XA CN200610134003A CN100428551C CN 100428551 C CN100428551 C CN 100428551C CN B200610134003X A CNB200610134003X A CN B200610134003XA CN 200610134003 A CN200610134003 A CN 200610134003A CN 100428551 C CN100428551 C CN 100428551C
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- Prior art keywords
- fuel cell
- group
- proton exchange
- cell
- membrane electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 239000000446 fuel Substances 0.000 title claims abstract description 56
- 239000012528 membrane Substances 0.000 title claims abstract description 42
- 239000007788 liquid Substances 0.000 title claims abstract description 19
- 238000009413 insulation Methods 0.000 claims description 5
- 230000035699 permeability Effects 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 239000011241 protective layer Substances 0.000 abstract 2
- -1 current collector Substances 0.000 abstract 1
- 239000004020 conductor Substances 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 239000007800 oxidant agent Substances 0.000 description 6
- 230000001590 oxidative effect Effects 0.000 description 6
- 239000012429 reaction media Substances 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000003913 materials processing Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000036647 reaction Effects 0.000 description 1
- 239000012495 reaction gas Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Images
Classifications
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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
Landscapes
- Fuel Cell (AREA)
Abstract
The invention discloses a liquid cooled proton exchange membrane fuel cell, comprising a group of single cells, protective layer, current collector, gas/liquid flow collecting plate, end plates, link rod and nuts, where the single cell comprises membrane electrode and polar plates on two sides of the membrane electrode, the front and rear ends of the group of single cells are arranged in turn with the current collector, gas/liquid flow collecting plate and end plates, the link rod runs through two end plates, the two end plates are fastened through the nuts, and it is characterized in that the group of single cells is coated with the protective layer, which can prevent mutual short-circuiting between the polar plates, so as to protect the group of single cells.
Description
Technical field
The present invention relates to a kind of fuel cell, a kind of specifically liquid cooled proton exchange membrane fuel cell.
Background technology
Proton Exchange Membrane Fuel Cells is a kind of device that produces electric energy by the electrochemical reaction of fuel and oxidant.The core component of this device is membrane electrode (Membrane Electrode Assembly is called for short MEA), is made up of two porous gas diffusion layers and a slice proton exchange membrane that is clipped in the middle.On the interface of proton exchange membrane and gas diffusion layers (as carbon paper), be attached with electrochemical catalyst.The two sides of membrane electrode is provided with guide plate, and the passage that arrives membrane electrode is provided for the reaction medium (fuel and oxidant) of participating in reaction.Has only a slice membrane electrode in the cell of fuel cell.In fuel cell, be assembled in the pile more than the cell of a slice mode with series connection, the output voltage of fuel cell is the summation of all monomer battery voltages in the fuel cell.
Another vitals of fuel cell is a pole plate.Pole plate is divided into bipolar plates and unipolar plate.Anode and cathode reaction are simultaneous in the both sides of pole plate respectively, are called bipolar plates; One side has only another side to link to each other with membrane electrode near the pole plate of current collector, and reaction only takes place in a side, is called unipolar plate.Containing on the pole plate can be for the passage of reaction medium circulation and the passage of cooling agent (as water) circulation.A reaction medium guiding gutter is contained on the surface of pole plate at least, guiding gutter provides the passage that arrives membrane electrode for the reaction medium (fuel or oxidant) of participating in electrode reaction, and the product that produces in reaction (as water) is discharged from fuel cell by the reaction medium guiding gutter.At least contain a coolant flow channel in the pole plate, coolant (as the water) coolant flow channel in the pole plate of flowing through is taken the heat that produces in the reaction out of fuel cell.Pole plate has certain air-tightness, and the encapsulant between pole plate, membrane electrode and pole plate and the membrane electrode separates fuel and the oxidant of participating in reaction.
Because pole plate provides passage for the circulation of electronics in the fuel cell reaction, the electric conductivity of pole plate is most important to the generating efficiency of fuel cell.The fuel cell of the pole plate that employing conducts electricity very well, the voltage drop when electric current passes through pole plate is just smaller, and the output voltage of fuel cell is just than higher under same electric current, and power output is also bigger.On the other hand, because the electric conductivity of pole plate is relatively good, the heat that produces during fuel cell power generation under same electric current is also fewer, and the power consumption of supporting with it fuel battery cooling system also can be smaller.Like this, the whole efficiency of fuel cell system is just than higher.Therefore, under situation as much as possible, the employed pole plate of fuel cell all is to be formed by materials processings such as the good graphite of electric conductivity, metals.
The fuel cell battery is made up of clamping a slice membrane electrode between two pole plates.Because membrane electrode very thin (thickness is usually less than 1mm), therefore the distance between adjacent two pole plates is very little.Fuel cell in use if there is conductor (as metallic element loosening in the system etc.) to come off on the cell group of fuel cell, might cause in the fuel cell mutual conduction between two or the polylith pole plate.
If the electric conductivity of conductor is not fine, or because the contact resistance between conductor and the pole plate is bigger, then the electric current that passes through on the conductor is not too large.In this case, the electric current that produces in the membrane electrode between contact with conductor two or the polylith pole plate equals the electric current sum passed through on fuel cell output current and the conductor, greater than the electric current that produces in other unaffected membrane electrode.Consequently, the voltage of the cell between contact with conductor two or the polylith pole plate will be lower than the voltage of other unaffected cell, causes the output voltage of fuel cell to reduce, and directly has influence on the power output of fuel cell.And the membrane electrode temperature drift between contact with conductor two or the polylith pole plate causes the moisture deficiency in the proton exchange membrane in the membrane electrode, has a strong impact on the reactivity worth of membrane electrode.
If conductor has excellent conducting performance, and contacting between conductor and the pole plate is good, can cause and conductor contacted two or polylith pole plate between short circuit mutually, cause the membrane electrode electric current between the short circuit pole plate excessive, the heat of generation sharply raises the membrane electrode temperature.Proton exchange membrane under the high temperature is easy to breakdown under the effect of reaction gas pressure difference, causes fuel cell to be ruined.
Therefore,, still from the view of security, avoid outside conducting and short circuit between the fuel battery pole board, all be very important no matter from fuel cell power generation efficient.
Summary of the invention
For solving the problem that newly has technology to exist, the purpose of this invention is to provide a kind of liquid cooled proton exchange membrane fuel cell that the fuel cell battery pack is had defencive function.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of liquid cooled proton exchange membrane fuel cell, it comprises the cell group that is composed in series by one group of cell, current collector, the gas/liquid collector plate, end plate, connecting rod, nut and overcoat, the pole plate that described cell group comprises membrane electrode and is arranged on the membrane electrode both sides, cell group rear and front end is provided with current collector respectively successively, gas/liquid collector plate and end plate, connecting rod passes the end plate of both sides outermost end, and two end plates is clamped by nut, the coated outside of cell group one deck overcoat, described overcoat and cell group keep certain spacing, and are the electric insulation layers that one deck has permeability.
Described overcoat is formed on the cell group outside by spraying method, film pyrocondensation mode or the direct mounting means of shell molds.
The present invention's beneficial effect compared with prior art is:
1) by adds the mode of one deck overcoat in the outside of liquid cooled proton exchange membrane fuel cell cell group; can avoid the fuel cell battery pack being had good protective effect because external conductor touches the cell group and causes part conducting or short circuit between the cell group pole plate.
2) the overcoat raw material are cheap, can not increase the production cost of fuel cell.
3) technology is simple, is suitable for industrialization production.
Description of drawings
Fig. 1 is the structural representation of a kind of liquid cooled proton exchange membrane fuel cell of invention.
Embodiment
The invention will be further described below by drawings and Examples:
As shown in Figure 1, a kind of liquid cooled proton exchange membrane fuel cell of the present invention, it comprises the cell group 1 that is composed in series by one group of cell, current collector 2, gas/liquid collector plate 3, end plate 4, connecting rod 5, nut 6 and overcoat 10, the pole plate 8 that described cell comprises membrane electrode 7 and is arranged on membrane electrode 7 both sides, cell group 1 rear and front end is provided with current collector 2 respectively successively, gas/liquid collector plate 3 and end plate 4, connecting rod 5 passes the end plate 4 of both sides outermost end, and pass through nut 6 with two end plates 4 clampings, be installed with packing ring 9 on the connecting rod 5, nut 6 clamps two end plates 4 by packing ring 9.Overcoat 10 is electric insulation layers that one deck has permeability.
Overcoat 10 can tightly be attached to the outside of cell group 1, also can keep certain spacing with cell group 1.
Overcoat can be formed on cell group 1 outside by spraying method, film pyrocondensation mode or the direct mounting means of shell molds.Can make the electric insulation overcoat by the mode of molding, in the fuel cell assembling, be assembled in the outside of fuel cell battery pack; Also can after the fuel cell assembling finishes, place one deck thermoplastic film, be wrapped in the outside of fuel cell battery pack after shrinking at a certain temperature in the outside of fuel cell battery pack; Also can be after fuel cell assembling finish, have the resin of electrical insulation capability at the outside of fuel cell battery pack spraying one deck, form the electric insulation overcoat that one deck and fuel cell battery pack closely contact after the resin solidification moulding.
Described overcoat has permeability.When fuel cell generation fuel or oxidant leak, can guarantee that the fuel or the oxidant that leak see through overcoat to outdiffusion, and can in overcoat, not accumulate.
Claims (2)
1, a kind of liquid cooled proton exchange membrane fuel cell, it comprises the cell group (1) that is composed in series by one group of cell, current collector (2), gas/liquid collector plate (3), end plate (4), connecting rod (5), nut (6) and overcoat (10), the pole plate (8) that described cell group comprises membrane electrode (7) and is arranged on membrane electrode (7) both sides, cell group (1) rear and front end is provided with current collector (2) respectively successively, gas/liquid collector plate (3) and end plate (4), connecting rod (5) passes the end plate (4) of both sides outermost end, and two end plates (4) is clamped by nut (6), the coated outside that it is characterized in that cell group (1) one deck overcoat (10), described overcoat (10) keeps certain spacing with cell group (1), and is the electric insulation layer that one deck has permeability.
2, a kind of liquid cooled proton exchange membrane fuel cell according to claim 1 is characterized in that described overcoat (10) is formed on cell group (1) outside by spraying method, film pyrocondensation mode or the direct mounting means of shell molds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610134003XA CN100428551C (en) | 2006-10-25 | 2006-10-25 | Liquid cooled proton exchange membrane fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610134003XA CN100428551C (en) | 2006-10-25 | 2006-10-25 | Liquid cooled proton exchange membrane fuel cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1949572A CN1949572A (en) | 2007-04-18 |
| CN100428551C true CN100428551C (en) | 2008-10-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610134003XA Expired - Fee Related CN100428551C (en) | 2006-10-25 | 2006-10-25 | Liquid cooled proton exchange membrane fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100428551C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108110175A (en) * | 2017-12-14 | 2018-06-01 | 山东星火科学技术研究院 | A kind of new energy Li-ion batteries piles using Internet surveillance security |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1233081A (en) * | 1998-04-17 | 1999-10-27 | 松下电器产业株式会社 | Solid polymer electrolyte fuel cell and method for producing the same |
| CN1405916A (en) * | 2001-09-11 | 2003-03-26 | 松下电器产业株式会社 | Fuel cell |
| US20040071865A1 (en) * | 2000-12-29 | 2004-04-15 | Renaut Mosdale | Method for making an assembly of base elements for a fuel cell substrate |
-
2006
- 2006-10-25 CN CNB200610134003XA patent/CN100428551C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1233081A (en) * | 1998-04-17 | 1999-10-27 | 松下电器产业株式会社 | Solid polymer electrolyte fuel cell and method for producing the same |
| US20040071865A1 (en) * | 2000-12-29 | 2004-04-15 | Renaut Mosdale | Method for making an assembly of base elements for a fuel cell substrate |
| CN1405916A (en) * | 2001-09-11 | 2003-03-26 | 松下电器产业株式会社 | Fuel cell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1949572A (en) | 2007-04-18 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: LI BEIMING Free format text: FORMER OWNER: DALIAN JIEHONG SCIENCE AND TECHNOLOGY CO., LTD. Effective date: 20071109 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20071109 Address after: 114001 Anshan province Liaoning City Tiedong District 51 Road No. 15 East 1105 commercial banks Applicant after: Li Beiming Address before: 116000 Dalian economic and Technological Development Zone, Liaoning Applicant before: Dalian Jiehong Science and Technology Co., Ltd. |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081022 Termination date: 20111025 |