CN109643809A - A kind of engagement type ultra-thin metal bipolar plate and its three-dimensional flow field - Google Patents
A kind of engagement type ultra-thin metal bipolar plate and its three-dimensional flow field Download PDFInfo
- Publication number
- CN109643809A CN109643809A CN201880002721.2A CN201880002721A CN109643809A CN 109643809 A CN109643809 A CN 109643809A CN 201880002721 A CN201880002721 A CN 201880002721A CN 109643809 A CN109643809 A CN 109643809A
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- flow field
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- single level
- metal
- engagement type
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- 239000002184 metal Substances 0.000 title claims abstract description 58
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 58
- 239000000446 fuel Substances 0.000 abstract description 23
- 239000002826 coolant Substances 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 4
- 239000011796 hollow space material Substances 0.000 abstract description 3
- 239000000112 cooling gas Substances 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000002737 fuel gas Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 210000004027 cell Anatomy 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000005404 monopole Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 210000000170 cell membrane Anatomy 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0206—Metals or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/026—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant characterised by grooves, e.g. their pitch or depth
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/0265—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant the reactant or coolant channels having varying cross sections
-
- 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
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
A kind of engagement type ultra-thin metal bipolar plate of fuel cell, including two pieces of metal single level plates (1), there is a plurality of recessed runner (2) in metal single level plates, runner is as flow field grooves, part between adjacent channels is flow field ridge, the section of runner in the width direction is that section trapezoidal, along its length is waveform, and the flow field ridge of a single level plates is inserted into the flow field grooves of another single level plates, and two pieces of metal single level plates engage at wavy trough.The metal double polar plates pass through the flow Field Design of " trapezoidal wave ", on the one hand the three-dimensional transmission of fuel gas may be implemented, on the other hand by realizing the engagement type combination between two single level plates at " trough " in " trapezoidal wave " flow field, third utilizes can be in the flow field of the hollow space of bipolar plates formation coolant liquid at " wave crest " in waveform flow field.By the design of this engagement type metal double polar plates, the thickness of bipolar plates can further be thinned, realize the design molding of ultra-thin metal bipolar plate, and retain the flow field of coolant liquid or cooling gas simultaneously.
Description
Technical field
The present invention relates to a kind of used in proton exchange membrane fuel cell metal double polar plates and flow Field Design technical fields, specifically relate to
And a kind of fuel cell engagement type metal double polar plates and its three-dimensional flow field.
Background technique
Currently, air pollution deteriorates increasingly, and environmental problem is by national pay attention to day by day.It is international in terms of automobile
Upper many countries have all formulated the timetable that conventional fuel oil car steps down from the stage of history, so that new-energy automobile has become the hair of country
One of exhibition strategy.The chemical energy in hydrogen directly can be converted into electricity by the Proton Exchange Membrane Fuel Cells of fuel of hydrogen
Can, water is only discharged in the process, is a kind of green power generation device of hydrogen utilization, can be used for the driving power of electric car,
And vehicle fuel battery technology industrialization in the world.
Bipolar plates are one of critical components of vehicle fuel battery, since the space of car limits, to vehicle fuel battery
Volumetric power density it is more demanding, this requires the very thin thickness of bipolar plates in the output power situation maintained like
Under, the volume of vehicle fuel battery is reduced as far as possible, that is, improves the volumetric power density of vehicle fuel battery.And in bipolar plate thickness
In the case that degree is thinned, conventional graphite bipolar plates or composite dual-electrode plates can not due to factors such as mechanical performance, gas permeation rates
Using, need using metal material prepare bipolar plates.In the design of existing metal double polar plates, flow field grooves are set based on rectangular section
Meter prepares a metal double polar plates by the metal monopole plate of two rectangular sections design with the form of " occlusion " combination, and two
The ridge part of unipolar plate forms hollow space in the intermediate of bipolar plates, to form the flow field of coolant liquid or cooling gas.And this
If the flow field of kind of rectangular section is assembled in the form of " engagement ", hollow cooling flow field will be closed, causes fuel electric
Pond can not cool down.For the volumetric power density for further increasing vehicle fuel battery, the stream by improving metal double polar plates is needed
Field design, while the thickness of reduction metal double polar plates reaches the output power for keeping vehicle fuel battery while optimizing flow field
The volume of fuel cell is reduced, to realize the purpose for improving vehicle fuel battery volumetric power density.
Summary of the invention
It is an object of the invention to solve the problems of the prior art, provide a kind of fuel cell engagement type metal bipolar
Plate is designed by the three-dimensional flow field to the metal double polar plates, can be effectively reduced the thickness of metal double polar plates, be kept output power
The volume of vehicle fuel battery is reduced simultaneously, to realize the purpose for improving the volumetric power density of vehicle fuel battery.
To achieve the above object, technical scheme is as follows:
A kind of engagement type ultra-thin metal bipolar plate, including two pieces of metal single level plates have a plurality of recessed stream in metal single level plates
Road, for runner as flow field grooves, the part between adjacent channels is flow field ridge, the section of runner in the width direction be it is trapezoidal, along length
The section for spending direction is waveform, and the flow field grooves and flow field ridge of two pieces of metal single level plates replace each other, i.e., the stream of one unipolar plate
Field ridge is inserted into the flow field grooves of another unipolar plate, and two pieces of metal single level plates engage at " trough " of " waveform ".
The trapezoidal bottom is the top of runner, and trapezoidal upper bottom is the lower part of runner, by change trapezoidal upper bottom and
The length of bottom controls the ridge ratio in flow field.
Wavy equation is SIN function or cosine function.
The upper bottom and bottom of flow field grooves trapezoid cross section are identical as the upper bottom of flow field ridge and bottom respectively.
The technical effect that the present invention has:
Fuel cell metal double polar plates and its three-dimensional flow field design scheme provided by the present invention use section to be trapezoidal and just
The flow Field Design of chord curve or cosine curve, and the ridge ratio that flow field can be effectively controlled is designed by trapezoid cross section, pass through wave
Tee section design, by two flow field grooves and ridge, alternate unipolar plate at sinusoidal or cosine curve " trough " sentences engagement each other
Form is combined into a bipolar plates, and the thickness with a thickness of two sheet metals of such metal double polar plates adds a flow field groove depth
Degree obtains ultrathin metal double polar plates so as to which the thickness of a flow field groove depth is effectively thinned；Simultaneously because using just
String or the design of cosine curve section, there are spaces at " wave crest ", and form the coolant liquid or cold of metal double polar plates hollow space
But the flow field of gas.Due to using the alternate unipolar plate design each other of two kinds of flow field grooves and ridge, thus in assembled battery heap,
The flow field grooves that need to ensure the metal double polar plates of fuel cell membrane electrode two sides are identical with the position of ridge, and cannot replace, if it is
Being alternately arranged will lead to membrane electrode and is destroyed by shearing force.By the design scheme of the engagement type ultrathin metal double polar plates,
Relative to the metal double polar plates of traditional " occlusion " formula design, the thickness of bipolar plates can be effectively reduced, reduce vehicle fuel battery
The volume of heap improves its volumetric power density.
The present invention is designed as engagement type design by improving conventional snap formula metal double polar plates, and it is double to effectively reduce metal
The thickness of one flow field groove depth of pole plate, realizes the design of thinner metal double polar plates, is keeping vehicle fuel to can ensure that
In the case that battery pile output power is constant, reach the volume for reducing the battery pile, improves the volumetric work of vehicle fuel battery heap
The purpose of rate density.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawing:
Fig. 1 is the sectional view of bipolar plates of the present invention in the width direction；
Fig. 2 is the flow field structure schematic diagram of bipolar plates of the present invention；
Fig. 3 is the trapezoid cross section schematic diagram in width of flow path direction；
Fig. 4 is the sectional view in flow channel length direction；
Fig. 5 is the length direction schematic diagram of metal double polar plates.
Specific embodiment
Below by embodiment, the present invention will be further described.
Embodiment 1
A kind of engagement type ultra-thin metal bipolar plate, including two pieces of metal single level plates 1 have in metal single level plates 1 multiple recessed
Runner 2, runner 2 are used as flow field grooves, and the part between adjacent channels 2 is flow field ridge, and the section of runner 2 in the width direction is ladder
Shape, section along its length are wave, and the flow field grooves and flow field ridge of two pieces of metal single level plates 1 replace each other, i.e. a monopole
The part of plate flow field grooves corresponds to the part of another unipolar plate flow field ridge, and two pieces of metal single level plates are at " trough " of " waveform "
Engagement.The equation of wave is SIN function or cosine function, is in the present embodiment SIN function.
Its processing method is as follows:
Step 1. is metal single level plates substrate using the sheet metal with a thickness of 0.1mm；
Step 2. metal double polar plates flow Field Design is specific as follows:
1. cross section of fluid channel distinguishes trapezoidal and waveform, flow-field plate is as shown in Fig. 1；
2. the upper bottom length 0.5mm in isosceles trapezoid section, go to the bottom length 0.8mm, i.e. flow field plate faces groove width 0.8mm, ridge is wide
0.5mm, as shown in attached drawing 1,2；
3. wavy cross-section equation is 0.12*sin (x), flow path groove depth capacity 0.4mm, minimum-depth 0.16mm, as attached drawing 1,
Shown in 3；
Step 3. designs the flow-field plate drawing opposite with flow field grooves in step 2 and flow field ridge position；
Step 4. processes corresponding stamping die based on the design in step 2 and 3 respectively；
Sheet metal in step 1 is carried out punch forming using the mold in step 4 respectively by step 5.；
Step 6. using based on step 2 and step 3 stamp out come two unipolar plates, in form knot of the wave trough position to engage
It closes, as shown in Fig. 4, obtains engagement type ultrathin metal double polar plates.
Example 2:
Wavy equation is cosine function in the present embodiment.
Step 1. is substrate using the sheet metal with a thickness of 0.1mm；
Step 2. metal double polar plates flow Field Design is specific as follows:
1. cross section of fluid channel distinguishes trapezoidal and waveform；
2. the upper bottom length 0.6mm in isosceles trapezoid section, go to the bottom length 1mm, i.e. flow field plate faces groove width 1mm, the wide 0.6mm of ridge；
3. wavy cross-section equation is 0.1*cos (x), flow path groove depth capacity 0.4mm, minimum-depth 0.2mm；
Step 3. designs the flow-field plate drawing opposite with flow field grooves in step 2 and flow field ridge position；
Step 4. processes corresponding stamping die based on the design in step 2 and 3 respectively；
Sheet metal in step 1 is carried out punch forming using the mold in step 4 respectively by step 5.；
Step 6. using based on step 2 and step 3 stamp out come two unipolar plates, in form knot of the wave trough position to engage
It closes, obtains engagement type ultrathin metal double polar plates.
It is emphasized that: the above is only presently preferred embodiments of the present invention, not make in any form to the present invention
Limitation, any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the invention,
It belongs in the range of technical solution of the present invention.
Claims (4)
- Have 1. a kind of engagement type ultra-thin metal bipolar plate, including two pieces of metal single level plates, in metal single level plates a plurality of recessed Runner, for runner as flow field grooves, the part between adjacent channels is flow field ridge, which is characterized in that runner cutting in the width direction It is waveform that face, which is section trapezoidal, along its length, and the flow field grooves and flow field ridge of two pieces of metal single level plates replace each other, i.e., one The flow field ridge of a unipolar plate is inserted into the flow field grooves of another unipolar plate, " trough " of two pieces of metal single level plates in " waveform " Place's engagement.
- 2. a kind of engagement type ultra-thin metal bipolar plate as described in claim 1, which is characterized in that the trapezoidal bottom is stream The top in road, trapezoidal upper bottom are the lower parts of runner, control the ridge in flow field by changing the length at trapezoidal upper bottom and bottom Than.
- 3. a kind of engagement type ultra-thin metal bipolar plate as described in claim 1, which is characterized in that wavy equation is sine Function or cosine function.
- 4. a kind of engagement type ultra-thin metal bipolar plate as described in claim 1, which is characterized in that flow field grooves trapezoid cross section it is upper Bottom and bottom are identical as the upper bottom of flow field ridge and bottom respectively.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2018/079264 WO2019174028A1 (en) | 2018-03-16 | 2018-03-16 | Engagement-type ultra-thin metal bipolar plate and three-dimensional flow field thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109643809A true CN109643809A (en) | 2019-04-16 |
| CN109643809B CN109643809B (en) | 2022-04-01 |
Family
ID=66060087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880002721.2A Expired - Fee Related CN109643809B (en) | 2018-03-16 | 2018-03-16 | Engaged ultrathin metal bipolar plate and three-dimensional flow field thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109643809B (en) |
| WO (1) | WO2019174028A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117543042A (en) * | 2024-01-10 | 2024-02-09 | 武汉理工大学 | Fuel cell material flow field plate with adjustable modularized three-dimensional hierarchical pore structure and cell |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022106045A1 (en) | 2022-03-16 | 2023-09-21 | Schaeffler Technologies AG & Co. KG | Bipolar plate for a fuel cell stack |
| CN114976099A (en) * | 2022-04-27 | 2022-08-30 | 同济大学 | Fuel cell bipolar plate flow channel optimization design method |
| CN115528267B (en) * | 2022-09-20 | 2023-08-15 | 中国科学院宁波材料技术与工程研究所 | Flow field plate, fuel cell unit, fuel cell, power generation system and electric equipment |
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| CN101807702A (en) * | 2004-05-21 | 2010-08-18 | 沙诺夫公司 | Electrochemical power source designs and components |
| CN203607487U (en) * | 2013-12-02 | 2014-05-21 | 新源动力股份有限公司 | Metal bipolar plate with high integration degree for proton exchange membrane fuel cell |
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| JP2018018768A (en) * | 2016-07-29 | 2018-02-01 | トヨタ車体株式会社 | Manufacturing method of gas passage formation plate for fuel cell, and gas passage formation plate for fuel cell |
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| US20050064270A1 (en) * | 2003-09-24 | 2005-03-24 | Marianowski Leonard G. | Fuel cell bipolar separator plate |
| CN104051771B (en) * | 2013-03-15 | 2018-11-02 | 福特全球技术公司 | Fuel cell pack and vehicle including it |
| BR112016030212A2 (en) * | 2014-06-27 | 2017-08-22 | Nuvera Fuel Cells Llc | ELECTROCHEMICAL CELL, FLOW FIELD AND OPEN POROUS FLOW FIELD MANUFACTURE METHOD FOR USE IN IT |
| CN107634240A (en) * | 2017-09-04 | 2018-01-26 | 苏州中氢能源科技有限公司 | A kind of small fuel cell metal double polar plates |
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2018
- 2018-03-16 WO PCT/CN2018/079264 patent/WO2019174028A1/en active Application Filing
- 2018-03-16 CN CN201880002721.2A patent/CN109643809B/en not_active Expired - Fee Related
Patent Citations (5)
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| CN101807702A (en) * | 2004-05-21 | 2010-08-18 | 沙诺夫公司 | Electrochemical power source designs and components |
| CN105074982A (en) * | 2012-12-27 | 2015-11-18 | 智慧能量有限公司 | Fluid flow plate for a fuel cell |
| CN203607487U (en) * | 2013-12-02 | 2014-05-21 | 新源动力股份有限公司 | Metal bipolar plate with high integration degree for proton exchange membrane fuel cell |
| CN104868129A (en) * | 2015-05-26 | 2015-08-26 | 昆山弗尔赛能源有限公司 | Metal bipolar plate for proton exchange membrane fuel cell |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117543042A (en) * | 2024-01-10 | 2024-02-09 | 武汉理工大学 | Fuel cell material flow field plate with adjustable modularized three-dimensional hierarchical pore structure and cell |
| CN117543042B (en) * | 2024-01-10 | 2024-04-09 | 武汉理工大学 | Fuel cell material flow field plate with adjustable modularized three-dimensional hierarchical pore structure and cell |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019174028A1 (en) | 2019-09-19 |
| CN109643809B (en) | 2022-04-01 |
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Granted publication date: 20220401 |