CN105762367A - Fuel cell bipolar plate - Google Patents
Fuel cell bipolar plate Download PDFInfo
- Publication number
- CN105762367A CN105762367A CN201410781723.XA CN201410781723A CN105762367A CN 105762367 A CN105762367 A CN 105762367A CN 201410781723 A CN201410781723 A CN 201410781723A CN 105762367 A CN105762367 A CN 105762367A
- Authority
- CN
- China
- Prior art keywords
- serpentine flow
- groove
- boss
- outlet
- snakelike
- 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.)
- Granted
Links
Classifications
-
- 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 fuel cell bipolar plate. Surfaces of two sides of a bipolar plate are provided with snakelike flow field zones. Each one of the snakelike flow field zones comprises n or more long bar-shaped bosses arranged from left to right in parallel, n is an integer greater than or equal to 2, two sides of each one of the bosses are provided with grooves and the grooves are separated through the bosses and are orderly connected end to end from left to right so that a snakelike groove with a left inlet and a right outlet is formed and is a main snakelike flow field. One or more of the bosses at odd number bits from left to right or one or more of the bosses at even number bits from left to right are provided with long bar-shaped grooves parallel to the bosses. The number of the grooves of each one of the bosses is an even integer greater than or equal to 2 and the grooves are orderly connected end to end from right to left so that a snakelike groove with a right inlet and a left outlet is formed and is a compensatory snakelike flow field. Compared with the existing bipolar plate, the fuel cell bipolar plate improves a fuel utilization rate, reduces energy consumption of an auxiliary device such as a fuel pump or a gas pump, promotes electrode axial mass transfer, improves fuel cell performances, can be processed easily and is convenient for large scale production.
Description
Technical field
The invention belongs to field of fuel cell technology.Specifically relate to fuel battery double plates and bipolar plate flow field.
Background technology
At present, the bipolar plate structure of Proton Exchange Membrane Fuel Cells, there are Serpentis type, interdigitated, leaves etc., wherein snakelike groove structure is simple, and the axial mass transfer of anode is stable, and negative electrode drainage effect is better, and this structure is most widely used general.But the cathode groove stroke of serpentine configuration is longer, and bigger linear loss causes that Pressure Drop is higher, so bigger burden can be brought to the air pump of negative electrode supply, the groove structure that therefore negative electrode must be provided with novel simple in construction, flow resistance is little, drainage is good；The architectural characteristic that the anode channels of serpentine configuration is arranged in parallel causes that the downstream area concentration of anode channels is relatively low, axial mass transfer effect is poor, especially the deficiency exposed on the long pole plate of high power fuel cell is more prominent, therefore Novel anode flow field is set, ensure the fuel concentration uniformity of whole pole plate anode, improve axial mass transfer effect further, and then improve fuel availability.
Summary of the invention
For overcoming prior art Problems existing, it is an object of the invention to provide a kind of bipolar plate for fuel cell.
The present invention realizes by the following technical solutions:
A kind of fuel battery double plates, both side surface in bipolar plates is equipped with serpentine flow region, each serpentine flow region includes the strip boss that more than n bar be arranged in parallel from left to right, n is the integer be more than or equal to 2, boss both sides are equipped with groove, and by boss separately, groove is end to end successively from left to right for groove, form left side to be import, right side be the snakelike groove of outlet, i.e. main serpentine flow；In counting from left to right in odd number boss on the boss of arbitrary more than 1 or in even number boss, the boss of arbitrary more than 1 is provided with the strip groove parallel with boss, groove number on each boss is the even number of more than 2, groove is end to end successively from right to left, forms right side to be import, left side be the compensation serpentine flow of outlet.
The import of main serpentine flow is connected by groove with compensating serpentine flow import, and the outlet of main serpentine flow is connected by groove with compensating serpentine flow outlet.
The one end of the odd number boss counted from left to right is connected, the one end of the even number boss counted from left to right is connected, between main serpentine flow with compensation serpentine flow, form the import of main serpentine flow on a continuous snakelike boss be connected by groove with compensating serpentine flow import, a continuous snakelike boss between main serpentine flow and compensation serpentine flow is provided with the second serpentine flow, the left side port of the second serpentine flow is connected with the outlet of described compensation serpentine flow, form the second compensation serpentine flow, the outlet of the second compensation serpentine flow that namely the right side port of the second serpentine flow is formed, second outlet compensating serpentine flow is connected by groove with the outlet of main serpentine flow.Namely, main serpentine flow is snakelike channel away, compensate between the snakelike groove that serpentine flow is upstream interspersed in main serpentine flow with straight line path from main serpentine flow snakelike groove stub area, the snakelike groove of main serpentine flow is carried out concentration offsets, until the snakelike return in snakelike Hou Zaiyanyuan road, groove starting end region of main serpentine flow, converge with the snakelike groove end of main serpentine flow, import outlet simultaneously.
Respectively more than 1, the serpentine flow region of described bipolar plates both side surface.When bipolar plates is rectangle, for heightening compensation effect further, the serpentine flow region of bipolar plates both side surface can be set to more than 2.
When the serpentine flow region of described bipolar plates both side surface is more than 2, the import of the main serpentine flow in each serpentine flow region, compensation serpentine flow import are connected respectively through groove.
The length of described main serpentine flow is equal with the length of described compensation serpentine flow.Can being accomplished by, the path number of times that namely in main serpentine flow, snakelike groove is reciprocal is more than the groove compensating flow field, returns to the path of turning back in region, top from the snakelike groove stub area of main serpentine flow compensating the snakelike groove in flow field.
Compared with prior art, bipolar plates of the present invention can improve the utilization rate of fuel, reduces the energy consumption of auxiliary equipment such as petrolift or gas pump, promotes the axial mass transfer of electrode, improves fuel battery performance, and is prone to processing, it is simple to large-scale production.
Accompanying drawing explanation
Fig. 1. anode flow field groove schematic diagram；
In figure, 1. main serpentine flow；2. compensate serpentine flow；3. the second serpentine flow；
Fig. 2. cathode flow field groove schematic diagram；
In figure, 1. main serpentine flow；2. compensate serpentine flow；3. the second serpentine flow.
Detailed description of the invention
Embodiment
Bipolar plates is with graphite for raw material, and serpentine flow region utilizes engraving machine to carve in graphite cake tow sides, and serpentine flow area schematic is as depicted in figs. 1 and 2.
Fig. 1 is anode flow field groove schematic diagram.As shown in the figure, the anode serpentine flow region of bipolar plates includes 20 strip boss be arrangeding in parallel from left to right, boss both sides are equipped with groove, groove is by boss separately, groove is end to end successively from left to right, form left side to be import, right side be the snakelike groove of outlet, i.e. main serpentine flow；In the count from left to right the 8th, 12, 16 boss are provided with the strip groove parallel with boss, groove number on each boss is 2, groove is end to end successively from right to left, forming a right side is import, left side is the snakelike groove of compensation of outlet, in the count from left to right the 4th, 8, 12, 16 boss are provided with the second serpentine flow on main serpentine flow and a continuous snakelike boss compensating between snakelike groove, the left side port of the second serpentine flow is connected with the outlet of described compensation serpentine flow, form the second compensation serpentine flow, the outlet of the second compensation serpentine flow that namely the right side port of the second serpentine flow is formed, second outlet compensating serpentine flow is connected by groove with the outlet of main serpentine flow.
Fig. 2 is cathode flow field groove schematic diagram.As shown in the figure, bipolar plates negative electrode serpentine flow region includes 6 strip boss be arrangeding in parallel from left to right, boss both sides are equipped with groove, groove is by boss separately, groove is end to end successively from left to right, form left side to be import, right side be the snakelike groove of outlet, i.e. main serpentine flow；The import compensating serpentine flow and main serpentine flow be arranged in parallel, and enter on the 4th boss counted from left to right, 4th boss is provided with strip 2 articles parallel with boss and compensates groove, groove is end to end successively from right to left, forming a right side is import, left side is the compensation serpentine flow of outlet, right side import is connected with the snakelike compensation flow field inlet entering the 4th boss, left side outlet is snakelike after entering the 2nd boss turns back, it is connected with the left side port in main serpentine flow with the second snakelike groove on one article compensated between snakelike groove continuous snakelike boss being arranged on the 4th boss, form the second compensation serpentine flow, the outlet of the second compensation serpentine flow that namely the right side port of the second serpentine flow is formed, second outlet compensating serpentine flow is connected by groove with the outlet of main serpentine flow.
When adopting the bipolar plates of said structure as DMFC bipolar plates, battery performance all increases than the battery performance of conventional bipolar plate under the same terms and stability.
Claims (6)
1. a fuel battery double plates, it is characterized in that: the both side surface in bipolar plates is equipped with serpentine flow region, each serpentine flow region includes the strip boss that more than n bar be arranged in parallel from left to right, n is the integer be more than or equal to 2, boss both sides are equipped with groove, and by boss separately, groove is end to end successively from left to right for groove, form left side to be import, right side be the snakelike groove of outlet, i.e. main serpentine flow；In the odd number boss counted from left to right, the boss of arbitrary more than 1 is provided with the strip groove parallel with boss on the boss of arbitrary more than 1 or in even number boss, groove number on each boss is the even number of more than 2, groove is end to end successively from right to left, forms right side to be import, left side be the compensation serpentine flow of outlet.
2. bipolar plates described in claim 1, it is characterised in that: the import of main serpentine flow is connected by groove with compensating serpentine flow import, and the outlet of main serpentine flow is connected by groove with the outlet compensating serpentine flow.
3. bipolar plates described in claim 1, it is characterized in that: the one end of the odd number boss counted from left to right is connected, the one end of the even number boss counted from left to right is connected, between main serpentine flow with compensation serpentine flow, form the import of main serpentine flow on a continuous snakelike boss be connected by groove with compensating serpentine flow import, a continuous snakelike boss between main serpentine flow and compensation serpentine flow is provided with the second serpentine flow, the left side port of the second serpentine flow is connected with the outlet of described compensation serpentine flow, form the second compensation serpentine flow, the outlet of the second compensation serpentine flow that namely the right side port of the second serpentine flow is formed, second outlet compensating serpentine flow is connected by groove with the outlet of main serpentine flow.
4. bipolar plates described in claim 1, it is characterised in that: respectively more than 1, the serpentine flow region of described bipolar plates both side surface.
5. bipolar plates described in claim 4, it is characterised in that: when the serpentine flow region of described bipolar plates both side surface is more than 2, the import of the main serpentine flow in each serpentine flow region, compensation serpentine flow import are connected respectively through groove.
6. according to the arbitrary described bipolar plates of claim 1-3, it is characterised in that: the length of described main serpentine flow is equal with the length of described compensation serpentine flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410781723.XA CN105762367B (en) | 2014-12-16 | 2014-12-16 | A kind of fuel battery double plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410781723.XA CN105762367B (en) | 2014-12-16 | 2014-12-16 | A kind of fuel battery double plates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105762367A true CN105762367A (en) | 2016-07-13 |
| CN105762367B CN105762367B (en) | 2018-04-24 |
Family
ID=56335573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410781723.XA Active CN105762367B (en) | 2014-12-16 | 2014-12-16 | A kind of fuel battery double plates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105762367B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109904480A (en) * | 2017-12-07 | 2019-06-18 | 中国科学院大连化学物理研究所 | A kind of bipolar plates with new flow field structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1164296A (en) * | 1994-10-12 | 1997-11-05 | H动力公司 | Fuel cells employing integrated fluid management platelet technology |
| CN1416184A (en) * | 2001-11-01 | 2003-05-07 | 哈尔滨工业大学 | Metal compound bipolar plate of fuel cell with proton exchange film |
| CN100340023C (en) * | 2002-04-25 | 2007-09-26 | 通用汽车公司 | Bipolar plate assembly having transverse legs |
| CN101937997A (en) * | 2010-09-21 | 2011-01-05 | 武汉理工大学 | Metallic bipolar plate of proton exchange membrane fuel cell and single cell and electric stack formed by same |
-
2014
- 2014-12-16 CN CN201410781723.XA patent/CN105762367B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1164296A (en) * | 1994-10-12 | 1997-11-05 | H动力公司 | Fuel cells employing integrated fluid management platelet technology |
| CN1416184A (en) * | 2001-11-01 | 2003-05-07 | 哈尔滨工业大学 | Metal compound bipolar plate of fuel cell with proton exchange film |
| CN100340023C (en) * | 2002-04-25 | 2007-09-26 | 通用汽车公司 | Bipolar plate assembly having transverse legs |
| CN101937997A (en) * | 2010-09-21 | 2011-01-05 | 武汉理工大学 | Metallic bipolar plate of proton exchange membrane fuel cell and single cell and electric stack formed by same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109904480A (en) * | 2017-12-07 | 2019-06-18 | 中国科学院大连化学物理研究所 | A kind of bipolar plates with new flow field structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105762367B (en) | 2018-04-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208908238U (en) | A kind of fuel battery double plates | |
| CN108258261A (en) | A kind of variable cross-section fuel cell channel | |
| CN101944618B (en) | Tree-structured flow field proton exchange membrane fuel cell bipolar plate | |
| CN102306805B (en) | PEMFC (proton exchange membrane fuel cell) metal bipolar plate conducive to improving fluid distribution | |
| CN101800317A (en) | Proton exchange membrane fuel cell bipolar plate with gas flow field | |
| CN103413956A (en) | Proton exchange membrane fuel cell channel | |
| CN105489913A (en) | Bipolar plate for fuel cell | |
| CN106876762A (en) | A kind of flow battery bipolar plates that interdigital runner is deepened containing broadening | |
| CN206992223U (en) | A kind of fuel battery double plates | |
| CN204333116U (en) | A kind of dual polar plates of proton exchange membrane fuel cell of helical structure flow field | |
| CN201655893U (en) | Bipolar plate of proton-exchange membrane fuel cell with gas flow field | |
| CN104518222B (en) | A kind of flow battery bipolar plates or unipolar plate structure and all-vanadium flow battery | |
| CN202817106U (en) | Novel flow field plate structure of proton exchange membrane fuel cell | |
| CN109950573B (en) | Flow field plate of fuel cell | |
| CN215118955U (en) | Bipolar plate for fuel cell and fuel cell | |
| CN105762367A (en) | Fuel cell bipolar plate | |
| CN102034986B (en) | Distribution head of bipolar plate for proton exchange membrane fuel cell | |
| CN106602100B (en) | Novel fuel cell flow field plate | |
| CN211404636U (en) | Graphite-metal composite bipolar plate for super-high power proton exchange membrane fuel cell | |
| CN203572278U (en) | Brazing sheet type heat exchanger | |
| CN203707257U (en) | Cathode structure of proton exchange membrane fuel cell | |
| CN203607487U (en) | Metal bipolar plate with high integration degree for proton exchange membrane fuel cell | |
| CN103346337A (en) | Fuel cell channel | |
| CN103762373A (en) | Cathode structure of proton exchange membrane fuel cell | |
| US20220238894A1 (en) | Fuel cell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |