CN105742650B - A kind of fuel cell pile bipolar plates and fuel cell pile - Google Patents
A kind of fuel cell pile bipolar plates and fuel cell pile Download PDFInfo
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- CN105742650B CN105742650B CN201410778425.5A CN201410778425A CN105742650B CN 105742650 B CN105742650 B CN 105742650B CN 201410778425 A CN201410778425 A CN 201410778425A CN 105742650 B CN105742650 B CN 105742650B
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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
A kind of fuel cell pile bipolar plates, the heat-conducting metal fin including the two-sided metal plate for being etched with flow field and metal plate edge；The heat-conducting metal fin is arranged perpendicular to metal plate surrounding periphery；The material of the metal plate is one of the stainless steel plate for plating noble metal, the aluminium sheet for plating noble metal, the titanium plate for plating noble metal, the titanium alloy sheet for plating noble metal, the aluminium alloy plate for plating noble metal.The noble metal is the alloy of one or more of platinum, gold, silver, palladium, iridium.The heat-conducting metal fin by one or more of copper, aluminium, gold, silver, nickel alloy.Using the fuel cell pile of the bipolar plates, including successively alternately stacked bipolar plates and membrane electrode, and after stacking component both ends end plate, when pile is when not less than -20 DEG C of storages with starting, the water content in the membrane electrode is not higher than 12g/cm2.The present invention has the advantages that low energy consumption, easy to implement etc. compared with prior art.
Description
Technical field
The invention belongs to field of fuel cell technology, more particularly to a kind of fuel cell pile bipolar plates and are applicable in
The fuel cell pile using the bipolar plates stored and started under low temperature environment.
Background technique
Low temperature (subzero) environment, at low temperature water-ice phase transformation meeting are inevitably encountered when fuel cell uses outdoors
The water content for causing to damage to MEA, therefore controlling membrane electrode is the key that solve fuel cell low temperature to use.When low-temperature storage,
Water content wants low to avoid the damage of water-ice phase transformation bring in battery, and when cold-starting, water content wants moderate, has both ensured the electricity of film
Conductance cannot be too low, prevents cathode water freezing from excessively hindering oxygen transfer again.
In view of the above-mentioned problems, current solution is divided into: 1) being rapidly heated when 2) 3) heat preservation starts and remove water.Wherein remove water
Mode be divided into again: gas purging, vacuumize water removal, capillary draining, the temperature difference driving water removal, it can be common that with nitrogen purging remove
Water, but this method need to additionally consume energy.It vacuumizes water removal easily to realize in laboratory, but in battery system and infeasible.Utilize temperature
Difference driving water removal, without additional energy consumption and easy to implement.
The principle of temperature difference driving water removal is that the transmitting of water is carried out using difference in chemical potential caused by temperature difference, specific as follows: combustion
Expect that the thermal conductivity of each component in battery list pond is different, local environment is also different, and there are temperature differences for each component in temperature-fall period.Temperature
The chemical potential of difference, water is also different, and water chemically can be transmitted to the low region of chemical potential in the high region of gesture, by the way that this is rationally arranged
The temperature difference increases water in temperature-fall period from film to the mass transfer flux in pole plate direction, to reduce the destruction to freeze to MEA.Fuel
Battery stack is in temperature-fall period, and middle portion temperature is high, and both ends temperature is low, and water can be surveyed to low temperature and be moved.
Summary of the invention
A kind of fuel cell pile bipolar plates, including the two-sided metal plate for being etched with flow field and metal plate edge
Heat-conducting metal fin.
The metal plate be rectangular metallic plate, the heat-conducting metal fin be rectangle, with perpendicular to metal plate with lead
The direction of thermometal fin junction is heat-conducting metal finned length direction, the length of the heat-conducting metal fin and the ratio of width
For 5:1-15:1；The thickness of heat-conducting metal fin is less than or equal to plate thickness；The width of the heat-conducting metal fin with it is adjacent
Two heat-conducting metal spacings of fin from ratio be 1:4-1:2；The gross area of the heat-conducting metal fin and the ratio of metal plate area
For 1:4-1:1.5.
A line setting in the metal plate surrounding periphery that the heat-conducting metal fin is connect perpendicular to it with metal plate, and
Heat-conducting metal fin and metal plate are in the same plane.
The material of the metal plate is that the material of the metal plate is the stainless steel plate for plating noble metal, the aluminium for plating noble metal
Plate, the titanium plate for plating noble metal, the titanium alloy sheet for plating noble metal, aluminium alloy plate, nitriding stainless steel plate, the nitriding aluminium for plating noble metal
One of plate, nitriding titanium plate, nitriding titanium alloy sheet, nitriding aluminium alloy plate.The noble metal is platinum, in gold, silver, palladium, iridium
One or more kinds of alloys.
The heat-conducting metal fin by one or more of copper, aluminium, gold, silver, nickel alloy.
A kind of fuel cell pile of the bipolar plates, including successively alternately stacked bipolar plates and membrane electrode, Yi Jiwei
The end plate at component both ends after stacking, in fuel cell temperature-fall period, between bipolar plates and membrane electrode not due to rate of temperature fall
Bipolar plates are moved to from membrane electrode with the temperature difference driving steam generated, so that the water content inside membrane electrode is reduced, the present invention
Its rate of temperature fall is improved, itself and film electricity are increased by improving heat dissipation area using the metal double polar plates for having heat-conducting metal fin
The temperature difference of pole improves the difference in chemical potential of water in the two, and water is made to flow to pole plate from membrane electrode, solves fuel cell pile under low temperature
Storage and starting problem, when pile is when not less than -20 DEG C of storages with starting, the water content in the membrane electrode is not higher than
12g/cm2。
When pile is when -20 DEG C to -10 DEG C storages are with starting, the water content in the membrane electrode is 8-10mg/cm2.When
For pile when -10 DEG C to 0 DEG C storages are with starting, the water content in the membrane electrode is 9-11mg/cm2.Compared with prior art
The present invention has the advantages that low energy consumption, easy to implement etc..
Detailed description of the invention
Fig. 1 metal double polar plates schematic diagram of the present invention with fin；
1 is the metal plate with metal fin, and 2 be flow field.
Metal double polar plates schematic diagram in Fig. 2 comparative example.
Specific embodiment
Embodiment 1
Fuel cell pile bipolar plates main body is gold-plated aluminium sheet, and gold-plated aluminium sheet is two-sided to be etched with double serpentine flows, gold-plated
Aluminium sheet edge is welded with thermally conductive copper fin.The size of gold-plated aluminium sheet is 7.5cm × 5cm.The length of thermally conductive copper fin is
1.4cm, width 0.16cm；The spacing of fin is 3mm.Thermally conductive copper fin is arranged perpendicular to gold-plated aluminium sheet surrounding periphery.
It is successively alternately stacked rear both ends assembling end plate using above-mentioned 5 bipolar plates and 5 commodity membrane electrodes (JM) and is formed and fire
Expect battery stack.
It is the above-mentioned fuel cell pile under the normal running conditions is out of service and cool down under the conditions of being transferred to -20 DEG C
It is cooling, when pile to environment temperature, test the water content in pile membrane electrode.Test result surface, it is flat in each membrane electrode
Equal water content is 9.6mg/cm2。
Embodiment 2
Fuel cell pile bipolar plates main body is gold-plated stainless steel plate, two-sided to be etched with dotted flow field, edge
It is welded with thermally conductive aluminum fin-stock.The size of gold-plated stainless steel plate is 7.5cm × 7.5cm.The length of thermally conductive aluminum fin-stock is 2cm, width
For 0.2cm；The spacing of fin is 3mm.Thermally conductive aluminum fin-stock is arranged perpendicular to gold-plated aluminium sheet surrounding periphery.
It is successively alternately stacked rear both ends assembling end plate using above-mentioned 5 bipolar plates and 5 commodity membrane electrodes (JM) and is formed and fire
Expect battery stack.
It is the above-mentioned fuel cell pile under the normal running conditions is out of service and cool down under the conditions of being transferred to -10 DEG C
It is cooling, when pile to environment temperature, test the water content in pile membrane electrode.Test result surface, it is flat in each membrane electrode
Equal water content is 10.5mg/cm2。
Comparative example 1
It is bipolar as bipolar plates assembling fuel cell pile using gold-plated aluminium sheet (its edge is without thermally conductive copper fin)
Plate flow field and size are in the same manner as in Example 1.Successively replace heap with 5 commodity membrane electrodes (JM) using above-mentioned 5 bipolar plates
Poststack both ends assemble end plate and form fuel cell pile.
It is the above-mentioned fuel cell pile under the normal running conditions is out of service and cool down under the conditions of being transferred to -20 DEG C
It is cooling, when pile to environment temperature, test the water content in pile membrane electrode.Test result surface, it is flat in each membrane electrode
Equal water content is 12mg/cm2。
Comparative example 2
Bipolar plates and fuel cell pile are identical as in comparative example 1, by the above-mentioned combustion under normal running conditions
Material battery stack is out of service and cooling down under the conditions of being transferred to -10 DEG C, when pile to environment temperature, test pile film electricity
Water content in extremely.Test result surface, the average moisture content in each membrane electrode are 12.3mg/cm2。
Claims (8)
1. a kind of fuel cell pile of fuel cell pile bipolar plates, it is characterised in that: including the two-sided flow field that is etched with
Metal plate and the heat-conducting metal fin of metal plate edge；Including successively alternately stacked bipolar plates and membrane electrode, Yi Jiwei
The end plate at component both ends after stacking, it is characterised in that: when pile not less than -20 DEG C storage with starting when, the membrane electrode
In water content be not higher than 12mg/cm2。
2. the fuel cell pile of bipolar plates as described in claim 1, it is characterised in that: the metal plate is rectangle metal
Plate, the heat-conducting metal fin is rectangle, with the direction perpendicular to metal plate and heat-conducting metal fin junction for thermally conductive gold
Belong to finned length direction, the length of the heat-conducting metal fin and the ratio of width are 5:1-15:1, the thickness of heat-conducting metal fin
Less than or equal to plate thickness；The width of the heat-conducting metal fin and two neighboring heat-conducting metal spacing of fin from ratio be 1:
4-1:2；The gross area of the heat-conducting metal fin and the ratio of metal plate area are 1:4-1:1.5.
3. the fuel cell pile of bipolar plates as described in claim 1, it is characterised in that: the heat-conducting metal fin perpendicular to
A line setting in its metal plate surrounding periphery being connect with metal plate, and heat-conducting metal fin and metal plate are in same flat
On face.
4. the fuel cell pile of bipolar plates as described in claim 1, it is characterised in that: the material of the metal plate is that plating is expensive
The stainless steel plate of metal, the aluminium sheet for plating noble metal, the titanium plate for plating noble metal, the titanium alloy sheet for plating noble metal, the aluminium for plating noble metal
One of alloy sheets, nitriding stainless steel plate, nitriding aluminium sheet, nitriding titanium plate, nitriding titanium alloy sheet, nitriding aluminium alloy plate.
5. the fuel cell pile of bipolar plates as claimed in claim 4, it is characterised in that: the noble metal be platinum, gold, silver,
The alloy of one or more of palladium, iridium.
6. the fuel cell pile of bipolar plates as described in claim 1, it is characterised in that: the heat-conducting metal fin by copper,
The alloy of one or more of aluminium, gold, silver, nickel.
7. the fuel cell pile of bipolar plates as described in claim 1, it is characterised in that: when pile is stored at -20 DEG C to -10 DEG C
When with starting, the water content in the membrane electrode is 8-10mg/cm2。
8. the fuel cell pile of bipolar plates as described in claim 1, it is characterised in that: when pile -10 DEG C to 0 DEG C storage with
When starting, the water content in the membrane electrode is 9-11mg/cm2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410778425.5A CN105742650B (en) | 2014-12-12 | 2014-12-12 | A kind of fuel cell pile bipolar plates and fuel cell pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410778425.5A CN105742650B (en) | 2014-12-12 | 2014-12-12 | A kind of fuel cell pile bipolar plates and fuel cell pile |
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| Publication Number | Publication Date |
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| CN105742650A CN105742650A (en) | 2016-07-06 |
| CN105742650B true CN105742650B (en) | 2019-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410778425.5A Active CN105742650B (en) | 2014-12-12 | 2014-12-12 | A kind of fuel cell pile bipolar plates and fuel cell pile |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111987332A (en) * | 2019-05-21 | 2020-11-24 | 中国科学院大连化学物理研究所 | Heat dissipation and preheating combined fuel cell stack |
| CN110416568A (en) * | 2019-09-04 | 2019-11-05 | 北京久安通氢能科技有限公司 | Air-cooled (list) battery pile of heat pipe metal double polar plates, the vehicles and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050221131A1 (en) * | 2004-03-31 | 2005-10-06 | Shantanu Roy | Fuel cell device with varied active area sizes |
| CN1684294A (en) * | 2004-04-14 | 2005-10-19 | 上海神力科技有限公司 | Self heat radiation and self wetting fuel cell stack with high power density |
| CN101083329A (en) * | 2007-05-14 | 2007-12-05 | 华南理工大学 | Minisize highly-effective thermal self-circulation cooling system for fuel cell |
| CN101853949A (en) * | 2010-06-12 | 2010-10-06 | 新源动力股份有限公司 | Wind-radiating vehicular fuel cell |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101372256B1 (en) * | 2012-02-29 | 2014-03-10 | 한라비스테온공조 주식회사 | Cooling-water heating type heater |
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2014
- 2014-12-12 CN CN201410778425.5A patent/CN105742650B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050221131A1 (en) * | 2004-03-31 | 2005-10-06 | Shantanu Roy | Fuel cell device with varied active area sizes |
| CN1684294A (en) * | 2004-04-14 | 2005-10-19 | 上海神力科技有限公司 | Self heat radiation and self wetting fuel cell stack with high power density |
| CN101083329A (en) * | 2007-05-14 | 2007-12-05 | 华南理工大学 | Minisize highly-effective thermal self-circulation cooling system for fuel cell |
| CN101853949A (en) * | 2010-06-12 | 2010-10-06 | 新源动力股份有限公司 | Wind-radiating vehicular fuel cell |
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| CN105742650A (en) | 2016-07-06 |
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Effective date of registration: 20211230 Address after: 528216 room 3, building D3, No. 1, Xiangda Road, Danzao logistics center, Danzao Town, Nanhai District, Foshan City, Guangdong Province (residence declaration) Patentee after: Zhongke Jiahong (Foshan) New Energy Technology Co.,Ltd. Address before: 116023 No. 457, Zhongshan Road, Liaoning, Dalian Patentee before: DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES Patentee before: Zhongke Jiayuan (Foshan) new energy partnership (limited partnership) |