CN108461783B - Packaging structure for improving ventilation of fuel cell stack module - Google Patents
Packaging structure for improving ventilation of fuel cell stack module Download PDFInfo
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- CN108461783B CN108461783B CN201711469889.8A CN201711469889A CN108461783B CN 108461783 B CN108461783 B CN 108461783B CN 201711469889 A CN201711469889 A CN 201711469889A CN 108461783 B CN108461783 B CN 108461783B
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- 238000009423 ventilation Methods 0.000 title claims abstract description 163
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 64
- 239000000446 fuel Substances 0.000 title claims abstract description 29
- 238000005192 partition Methods 0.000 claims abstract description 23
- 238000003825 pressing Methods 0.000 claims abstract description 15
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 22
- 229910052802 copper Inorganic materials 0.000 claims description 22
- 239000010949 copper Substances 0.000 claims description 22
- 238000007689 inspection Methods 0.000 claims description 16
- 238000005452 bending Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 abstract description 33
- 239000001257 hydrogen Substances 0.000 abstract description 29
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 29
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 26
- 238000005265 energy consumption Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- -1 hydrogen ions Chemical class 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 239000002699 waste material Substances 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
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
-
- 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
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/2484—Details of groupings of fuel cells characterised by external manifolds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
-
- 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
The invention relates to a packaging structure for improving ventilation of a fuel cell stack module, which comprises a packaging structure, a stack, a patrol module, a stack pressing block and a ventilation partition plate assembly. Compared with the prior art, the ventilation baffle plate assembly effectively controls the possibility that ventilation air flow forms vortex at the top of the electric pile, thereby effectively preventing the possibility that hydrogen leaked from the electric pile can gather at the partial position of the top, effectively controlling the flow path of ventilation gas, avoiding the possibility of ventilation short circuit, ensuring that a ventilation flow field does not have vortex at the top of the electric pile, designing ventilation flow according to the safety requirement of dangerous gas, reducing the arrangement space or working energy consumption of an air compressor and improving the effective output power of a fuel cell.
Description
Technical Field
The invention belongs to the field of fuel cell stacks, and relates to a packaging structure for improving ventilation of a fuel cell stack module.
Background
With the increase of environmental awareness and anxiety about exhaustion of petroleum energy, new energy automobiles have been developed in recent years, and among them, hydrogen fuel cells are considered as third generation power systems following steam engines and internal combustion engines because of their high power density, zero pollution and excellent cruising ability.
A hydrogen fuel cell is an electrochemical device capable of converting hydrogen and oxygen (air) into electric energy and reaction products (water), and the core operating component is a galvanic pile. As a vehicle-mounted power system, the electric pile of the hydrogen fuel cell is generally formed by connecting hundreds of single-chip electric piles in series so as to ensure that the power of the hydrogen fuel cell can meet the use requirement. As a basic constituent unit of the cell stack, the monolithic cell stack is mainly composed of a membrane electrode (Membrane Electrode Assembly, MEA for short), a polar plate, a seal wire, and the like. When the galvanic pile starts to work, electrochemical reaction occurs at two sides of the membrane electrode, and the specific process is that electrons are obtained on the surface of a catalyst (Pt) by oxygen in a cathode region, negative ions are formed, and the negative ions react with hydrogen ions transferred from an anode region and water is generated. The anode reaction and the cathode reaction when the electric pile is operated can be expressed by the following equation:
anode reaction: h 2 →2H + +2e
Cathode reaction: 1/2O 2 +2H + +2e→H 2 O
As a vehicle-mounted power system, the working environment of the hydrogen fuel cell is quite complex, the bare electric pile is corroded by a large amount of dust or water, once the dust or water enters the electric pile, the electric pile is subjected to electric leakage accidents, the electric pile is damaged slightly, and the personnel are injured seriously. Based on this, the hydrogen fuel cell system must perform necessary packaging of the stack to ensure operation safety of the stack.
In order to ensure safe operation of the electric pile, the hydrogen fuel cell is generally designed into a packaging structure, and the electric pile, the electricity taking module and some necessary sensors are arranged inside the packaging structure; and (3) integrating inlet and outlet pipelines of hydrogen, oxygen (air) and cooling liquid on one (or more) surfaces of the packaging structure so as to ensure the air supply and cooling of the galvanic pile. The design can well solve the problem that the galvanic pile is in contact with dust or water outside, but the current galvanic pile technology cannot realize zero hydrogen leakage due to small density of hydrogen and high diffusion speed, and in order to prevent the possibility that the hydrogen is gathered in the package and explosion danger occurs, the packaging structure must be ventilated, so that the timely discharge of the hydrogen is ensured.
Current hydrogen fuel cell designs focus mainly on electrochemical performance of the stack and applicability to on-board operating conditions (e.g., cold start), far from considering ventilation design for packaging. Currently, in the hydrogen fuel cell industry, ventilation design of a galvanic pile is mainly focused on the position, the number and the ventilation flow rate of ventilation openings, such as a ventilation packaging design of a hydrogen fuel cell disclosed in chinese patent CN 1866582. These designs clearly suffer from the following disadvantages:
(1) Stack package venting designs do not take into account the characteristics of their internal flow fields. The hydrogen, oxygen (air), cooling liquid inlet and outlet of the electric pile, various power taking modules, sensors, control modules and other connector interfaces are integrated on the packaging structure, so that the inlet and outlet for packaging ventilation of the electric pile cannot be formed very huge, and the quantity of the inlets and outlets for packaging ventilation cannot be particularly increased, and therefore, the gas flow rate of the packaging ventilation inlet can be very high. The reynolds number of the air flow is generally relatively high in the package, so that vortex flow occurs in the package, and even ventilation air enters from the inlet and is discharged from the outlet directly through the shortest path, so that ventilation air flow is short-circuited.
(2) This type of design is not suitable for large stacks. Because the design can not ensure that ventilation gas can sweep the whole top of a pile, the design must rely on the diffusion speed of hydrogen and ventilation quantity to discharge the hydrogen leaked by the pile, and as the number of pile pieces increases, the hydrogen content in the package can be linearly increased, the required ventilation quantity can also be linearly increased, if the ventilation quantity is fully increased to discharge air, a larger air compressor is required to work, the installation space of the vehicle-mounted arrangement is limited, and even if the vehicle has enough space, the large air compressor can be arranged, the energy waste can be caused, and the working efficiency of the fuel cell is lowered.
Disclosure of Invention
It is an object of the present invention to provide a packaging structure for improving ventilation of a fuel cell stack module in order to overcome the above-mentioned drawbacks of the prior art.
The aim of the invention can be achieved by the following technical scheme:
a package structure for improving ventilation of a fuel cell stack module, comprising:
the packaging structure is in a cuboid box-shaped structure, the right lower corner of the front side plate is provided with an air inlet, the left upper corner is provided with an air outlet,
the electric pile is arranged in the packaging structure, the bottom is attached to the bottom plate of the packaging structure, the top and the side are provided with intervals with the packaging structure,
the inspection module is attached to the front part of the inner wall of the right side plate of the packaging structure, a gap is reserved between the inspection module and the right side of the electric pile, the electric pile pressing block is pressed above the tail part of the electric pile, the rear part of the electric pile pressing block is attached to the rear side plate of the packaging structure,
the ventilation baffle plate assembly is arranged between the top of the electric pile and the top plate of the packaging structure and consists of a first ventilation baffle plate mechanism and a second ventilation baffle plate mechanism, the first ventilation baffle plate mechanism consists of a plurality of ventilation baffle plates arranged on the right side of the top of the electric pile, the plurality of ventilation baffle plates of the first ventilation baffle plate mechanism are positioned at the front part of the electric pile and are sequentially arranged from front to back, the last ventilation baffle plate is provided with a front bending part, and the second ventilation baffle plate mechanism consists of one ventilation baffle plate which is arranged on the left side of the top of the electric pile and is positioned at the rear of the first ventilation baffle plate mechanism.
Preferably, the air inlet corresponds to the interval between the electric pile and the right side plate of the packaging structure, and the air outlet is positioned above the interval between the electric pile and the left side plate of the packaging structure.
Preferably, the bottom of each ventilation separator is in contact with the top of the stack, which is in contact with the top plate of the package structure.
Preferably, the first ventilation baffle mechanism comprises first ventilation baffle, second ventilation baffle and third ventilation baffle that arrange in proper order from front to back, and the third ventilation baffle comprises third ventilation baffle body and antebend portion, and first ventilation baffle, second ventilation baffle and third ventilation baffle body all are parallel with packaging structure front side board, and first ventilation baffle and antebend portion cooperation for with the air current direction gas outlet.
Preferably, the second ventilation partition plate and the third ventilation partition plate body are both in contact with the right side plate of the packaging structure, and the second ventilation partition plate is shorter than the first ventilation partition plate.
Preferably, one ventilation partition plate forming the second ventilation partition plate mechanism is a fourth ventilation partition plate, which is parallel to the front side plate of the packaging structure, and the left end of the fourth ventilation partition plate is connected with the left side plate of the packaging structure.
Preferably, the left end of the fourth air-permeable separator is positioned at the left rear of the right end of the forward bending part.
Preferably, the packaging structure further comprises a power taking module arranged on the right side of the top of the electric pile, the power taking module is located at the rear portion of the electric pile, the power taking module is connected with a first copper bar and a second copper bar which are respectively led to the front portion and the rear portion of the electric pile, and the tail ends of the first copper bar and the second copper bar are respectively provided with a first copper bar protection sleeve and a second copper bar protection sleeve.
When the electric pile works, ventilation air flow enters a gap between the electric pile and the right side plate of the packaging structure from the air inlet; when the ventilation air flow meets the inspection module, the ventilation air flow is split, one part of air flows backwards from a gap between the inspection module and the right side of the electric pile, and the other part of air is split upwards. A part of the upward-split gas flows through the front part of the top of the electric pile from the gap between the front side plate of the packaging structure and the first ventilation baffle plate mechanism and the front part of the top of the electric pile in the first ventilation baffle plate mechanism respectively, and then flows out from the gas outlet, and the part of the gas can take away the leaked or possibly leaked hydrogen at the front part of the electric pile; the other part of the combined gas can cross the inspection module from the upper part of the inspection module and the gas flowing through the gap between the inspection module and the electric pile, the combined gas can form vortex at the rear part of the inspection module, then one part of the combined gas passes through the gap between the third ventilation baffle plate at the top of the electric pile and the packaging pressing plate, the other part of the combined gas can flow into the left side of the electric pile along the gap between the rear end of the electric pile and the rear side plate of the packaging structure, then the combined gas blows to the top of the electric pile along the gap between the electric pile and the left side of the packaging structure and is combined with the gas entering from the gap between the third ventilation baffle plate and the pressing plate, and the gas entering from the top of the electric pile from the third ventilation baffle plate and the pressing plate is far greater than the gas entering from the left side of the electric pile, so that a fourth ventilation baffle plate is needed to avoid forming vortex at the rear top of the electric pile. The air flow blown into the top at two sides of the electric pile flows out along the gap between the third air-through separator and the fourth air-through separator and finally flows out from the air outlet, so that the hydrogen leaked or possibly leaked at the rear part of the electric pile is discharged.
Compared with the prior art, the invention has the following beneficial effects:
(1) By adding the ventilation partition plate, the possibility that ventilation air flows form vortex at the top of the electric pile is effectively controlled, and therefore the possibility that hydrogen leaked or possibly leaked from the electric pile is accumulated at a partial position at the top is effectively prevented.
(2) After the ventilation partition plates are added, the flow path of ventilation gas can be effectively controlled, the ventilation gas can be ensured to sweep the top space of the electric pile basically uniformly, and the possibility of ventilation short circuit is avoided.
(3) After the ventilation partition plate is added, ventilation gas can directly purge hydrogen leaked from the top of the electric pile, so that the ventilation flow can meet the safety requirement under the condition of determining the leakage amount.
(4) Based on the characteristic that the ventilation flow field has no vortex at the top of the electric pile, the ventilation flow can be designed completely according to the safety requirement of dangerous gas, and the ventilation flow is not required to be set at a very high value, so that the vehicle-mounted arrangement can be ensured, the arrangement space of an air compressor is reduced, or the working energy consumption of the air compressor is reduced, and the effective output power of the hydrogen fuel cell is improved.
Drawings
FIG. 1 is a schematic diagram of a package structure of the present invention;
fig. 2 is a schematic diagram of an internal ventilation flow field of the package structure of the present invention.
In the figure, 1 is a galvanic pile, 2 is an air inlet, 3 is a packaging structure, 4 is a first ventilation baffle, 5 is a second ventilation baffle, 6 is a patrol module, 71 is a third ventilation baffle body, 72 is a front bent part, 8 is an electricity taking module, 9 is a galvanic pile pressing block, 10 is a second copper bar protective sleeve, 11 is a second copper bar, 12 is a first copper bar, 13 is a fourth ventilation baffle, 14 is a first copper bar protective sleeve, and 15 is an air outlet.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples.
Example 1
The packaging structure for improving ventilation of the fuel cell stack module comprises a packaging structure 3, a stack 1, a patrol module 6, a stack pressing block 9 and a ventilation partition plate assembly, as shown in fig. 1; the packaging structure 3 is of a cuboid box-shaped structure, the right lower corner of the front side plate is provided with an air inlet 2, and the left upper corner is provided with an air outlet 15; the electric pile 1 is arranged in the packaging structure 3, the bottom is attached to the bottom plate of the packaging structure 3, and a space is arranged between the top and the side of the electric pile and the packaging structure 3; the inspection module 6 is attached to the front part of the inner wall of the right side plate of the packaging structure 3 and is separated from the right side of the electric pile 1 by a gap; the electric pile pressing block 9 is pressed above the tail part of the electric pile 1, and the rear part of the electric pile pressing block 9 is attached to the rear side plate of the packaging structure 3; the ventilation baffle assembly is arranged between the top of the electric pile 1 and the top plate of the packaging structure 3 and consists of a first ventilation baffle mechanism and a second ventilation baffle mechanism, the first ventilation baffle mechanism consists of a plurality of ventilation baffles arranged on the right side of the top of the electric pile 1, the plurality of ventilation baffles of the first ventilation baffle mechanism are positioned at the front part of the electric pile 1 and are sequentially arranged from front to back, the last ventilation baffle is provided with a front bending part 72, and the second ventilation baffle mechanism consists of a ventilation baffle arranged on the left side of the top of the electric pile 1 and positioned at the rear of the first ventilation baffle mechanism.
In this embodiment, the air inlet 2 corresponds to the space between the stack 1 and the right side plate of the package structure 3, and the air outlet 15 is located above the space between the stack 1 and the left side plate of the package structure 3.
In this embodiment, the bottom of each ventilation separator contacts with the top of the stack 1, the top contacts with the top plate of the package structure 3, the first ventilation separator mechanism is composed of a first ventilation separator 4, a second ventilation separator 5 and a third ventilation separator which are sequentially arranged from front to back, the third ventilation separator is composed of a third ventilation separator body 71 and a front bent portion 72, the first ventilation separator 4, the second ventilation separator 5 and the third ventilation separator body 71 are all parallel to the front side plate of the package structure 3, and the first ventilation separator 4 and the front bent portion 72 are matched for guiding air flow to the air outlet 15. The second ventilation separator 5 and the third ventilation separator body 71 are both in contact with the right side plate of the package structure 3, and the second ventilation separator 5 is shorter than the first ventilation separator. One ventilation partition plate forming the second ventilation partition plate mechanism is a fourth ventilation partition plate 13 which is parallel to the front side plate of the packaging structure 3, and the left end of the fourth ventilation partition plate 13 is connected with the left side plate of the packaging structure 3. The left end of the fourth air-passing partition 13 is located left-behind the right end of the forward bent portion 72.
In this embodiment, the package structure further includes a power taking module 8 disposed on the right side of the top of the electric pile 1, and the power taking module 8 is located at the rear portion of the electric pile 1, a first copper bar 12 and a second copper bar 11 which respectively lead to the front portion and the rear portion of the electric pile are connected to the power taking module 8, and a first copper bar protection sleeve 14 and a second copper bar protection sleeve 10 are respectively disposed at the ends of the first copper bar 12 and the second copper bar 11.
As shown in fig. 2, when the electric pile works, ventilation air flow enters a gap between the electric pile and the right side plate of the packaging structure from the air inlet; when the ventilation air flow meets the inspection module, the ventilation air flow is split, one part of air flows backwards from a gap between the inspection module and the right side of the electric pile, and the other part of air is split upwards. A part of the upward-split gas flows through the front part of the top of the electric pile from the gap between the front side plate of the packaging structure and the first ventilation baffle plate mechanism and the front part of the top of the electric pile in the first ventilation baffle plate mechanism respectively, and then flows out from the gas outlet, and the part of the gas can take away the leaked or possibly leaked hydrogen at the front part of the electric pile; the other part of the combined gas can cross the inspection module from the upper part of the inspection module and the gas flowing through the gap between the inspection module and the electric pile, the combined gas can form vortex at the rear part of the inspection module, then one part of the combined gas passes through the gap between the third ventilation baffle plate at the top of the electric pile and the packaging pressing plate, the other part of the combined gas can flow into the left side of the electric pile along the gap between the rear end of the electric pile and the rear side plate of the packaging structure, then the combined gas blows to the top of the electric pile along the gap between the electric pile and the left side of the packaging structure and is combined with the gas entering from the gap between the third ventilation baffle plate and the pressing plate, and the gas entering from the top of the electric pile from the third ventilation baffle plate and the pressing plate is far greater than the gas entering from the left side of the electric pile, so that a fourth ventilation baffle plate is needed to avoid forming vortex at the rear top of the electric pile. The air flow blown into the top at two sides of the electric pile flows out along the gap between the third air-through separator and the fourth air-through separator and finally flows out from the air outlet, so that the hydrogen leaked or possibly leaked at the rear part of the electric pile is discharged.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present invention. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present invention.
Claims (8)
1. A package structure for improving ventilation of a fuel cell stack module, comprising:
the packaging structure (3) is in a cuboid box-shaped structure, the right lower corner of the front side plate is provided with an air inlet (2), the left upper corner is provided with an air outlet (15),
the electric pile (1) is arranged in the packaging structure (3), the bottom is attached to the bottom plate of the packaging structure (3), the top and the side are provided with intervals with the packaging structure (3),
the inspection module (6) is attached to the front part of the inner wall of the right side plate of the packaging structure (3) and is separated from the right side of the electric pile (1) by a gap,
a galvanic pile pressing block (9) which is pressed above the tail part of the galvanic pile (1), the rear part of the galvanic pile pressing block (9) is attached to the rear side plate of the packaging structure (3),
the ventilation baffle assembly is arranged between the top of the electric pile (1) and the top plate of the packaging structure (3), and consists of a first ventilation baffle mechanism and a second ventilation baffle mechanism, wherein the first ventilation baffle mechanism consists of a plurality of ventilation baffles arranged on the right side of the top of the electric pile (1), the plurality of ventilation baffles of the first ventilation baffle mechanism are positioned at the front part of the electric pile (1) and are sequentially arranged from front to back, the last ventilation baffle is provided with a front bending part (72), and the second ventilation baffle mechanism consists of a ventilation baffle arranged on the left side of the top of the electric pile (1) and positioned behind the first ventilation baffle mechanism.
2. The packaging structure for improving ventilation of a fuel cell stack module according to claim 1, wherein the air inlet (2) corresponds to a space between the stack (1) and a right side plate of the packaging structure (3), and the air outlet (15) is located above the space between the stack (1) and a left side plate of the packaging structure (3).
3. The package structure for improving ventilation of a fuel cell stack module according to claim 1, wherein the bottom of each ventilation partition is in contact with the top of the stack (1) and the top is in contact with the top plate of the package structure (3).
4. The package structure for improving ventilation of a fuel cell stack module according to claim 1, wherein the first ventilation separator mechanism is composed of a first ventilation separator (4), a second ventilation separator (5) and a third ventilation separator which are arranged in sequence from front to back, the third ventilation separator is composed of a third ventilation separator body (71) and a forward bent portion (72), the first ventilation separator (4), the second ventilation separator (5) and the third ventilation separator body (71) are all parallel to a front side plate of the package structure (3), and the first ventilation separator (4) and the forward bent portion (72) are matched for guiding air flow to the air outlet (15).
5. The package structure for improving ventilation of a fuel cell stack module according to claim 4, wherein the second ventilation separator (5) and the third ventilation separator body (71) are both in contact with the right side plate of the package structure (3), and the second ventilation separator (5) is shorter than the first ventilation separator.
6. The package structure for improving ventilation of a fuel cell stack module according to claim 1, wherein one ventilation partition constituting the second ventilation partition mechanism is a fourth ventilation partition (13) which is parallel to the front side plate of the package structure (3), and a left end of the fourth ventilation partition (13) is connected to the left side plate of the package structure (3).
7. The package structure for improving ventilation of a fuel cell stack module according to claim 6, wherein the left end of the fourth ventilation separator (13) is located at the left rear of the right end of the forward bent portion (72).
8. The packaging structure for improving ventilation of a fuel cell stack module according to claim 1, further comprising a power taking module (8) arranged on the right side of the top of the stack (1), wherein the power taking module (8) is located at the rear of the stack (1), the power taking module (8) is connected with a first copper bar (12) and a second copper bar (11) which are respectively led to the front and the rear of the stack, and the ends of the first copper bar (12) and the second copper bar (11) are respectively provided with a first copper bar protection sleeve (14) and a second copper bar protection sleeve (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711469889.8A CN108461783B (en) | 2017-12-29 | 2017-12-29 | Packaging structure for improving ventilation of fuel cell stack module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711469889.8A CN108461783B (en) | 2017-12-29 | 2017-12-29 | Packaging structure for improving ventilation of fuel cell stack module |
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| Publication Number | Publication Date |
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| CN108461783A CN108461783A (en) | 2018-08-28 |
| CN108461783B true CN108461783B (en) | 2023-12-22 |
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| CN114744245A (en) * | 2022-03-17 | 2022-07-12 | 北京国家新能源汽车技术创新中心有限公司 | Modularized fuel cell system and vehicle |
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