CN112436162A - Fuel cell electric vehicle - Google Patents
Fuel cell electric vehicle Download PDFInfo
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- CN112436162A CN112436162A CN202011353914.8A CN202011353914A CN112436162A CN 112436162 A CN112436162 A CN 112436162A CN 202011353914 A CN202011353914 A CN 202011353914A CN 112436162 A CN112436162 A CN 112436162A
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- 239000000446 fuel Substances 0.000 title claims abstract description 83
- 239000000110 cooling liquid Substances 0.000 claims abstract description 43
- 238000005192 partition Methods 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 abstract description 21
- 238000010248 power generation Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 36
- 238000006243 chemical reaction Methods 0.000 description 34
- 238000001816 cooling Methods 0.000 description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K11/00—Motorcycles, engine-assisted cycles or motor scooters with one or two wheels
-
- 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
- H01M8/0265—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
-
- 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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04014—Heat exchange using gaseous fluids; Heat exchange by combustion of reactants
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- 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
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K2204/00—Adaptations for driving cycles by electric motor
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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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- Sustainable Energy (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a fuel cell electric vehicle, which comprises a fuel cell, wherein the fuel cell comprises a plurality of monocells arranged side by side, each monocell comprises a cathode plate and an anode plate which are arranged oppositely, a cooling liquid conveying port and an anode gas conveying port which are communicated along the thickness direction are correspondingly arranged on the cathode plate and the anode plate, and the number of the cooling liquid conveying ports and the number of the anode gas conveying ports are two; the middle part of one side of the cathode plate is provided with an air flow channel which is arranged in a through mode along the transverse direction or the longitudinal direction, and the other side of the cathode plate is provided with a first cooling liquid flow channel which is communicated with the two cooling liquid conveying ports; the middle part of one side of the anode plate is provided with an anode flow field area, an anode flow channel is arranged in the anode flow field area at intervals, and the anode flow channel is communicated with two anode gas conveying ports; the other side of the anode plate is provided with a second cooling liquid flow channel communicated with the two cooling liquid conveying openings. The invention has the advantages of reasonable structural design, good heat dissipation effect, capability of improving the power generation efficiency and power density, contribution to improving the cruising ability and the like.
Description
Technical Field
The invention relates to the technical field of electric vehicles, in particular to a fuel cell electric vehicle.
Background
The fuel cell electric vehicle is an important member in a new energy vehicle family, the fuel cell adopted by the fuel cell directly converts chemical energy stored in fuel and oxidant into electric energy in a mode of carrying out chemical reaction on the fuel in electrolyte, the fuel does not undergo combustion, and no complex energy conversion process of an internal combustion engine exists, so that the power generation efficiency is the highest among all the power generation modes at present. Because it has no moving parts and no combustion, it has low noise and low infrared characteristics. The core of the fuel cell power generation device is the electric pile, the quality of the performance of the electric pile directly determines the performance of the whole cell, and the operation temperature of the fuel cell directly influences the overall performance of the cell and needs to keep good heat dissipation when the fuel cell power generation device works.
The current main heat dissipation methods are as follows: an air-cooling double-fan scheme, a direct air-cooling scheme and a water-cooling closed structure scheme. The reaction fan and the heat dissipation fan of the air-cooled double-fan scheme adopt two different fans and have independent functions, and the reaction air duct is separated from the heat dissipation air duct. The reaction fan and the heat dissipation fan of the direct air cooling scheme are combined into a whole, the structure of the galvanic pile is more compact, and water generated by reaction of the galvanic pile is taken away by large-flow air, so that the galvanic pile is almost in dry film power generation, and the low power generation efficiency and the low power density are caused. The water-cooling closed structure scheme has strong heat dissipation capacity, the temperature inside the electric pile is uniformly distributed, the electric pile is less influenced by the ambient temperature, however, the scheme needs to additionally adopt an air pump to actively convey reaction air (positive pressure conveying), the power is high, a large amount of electric energy of batteries is consumed, and the power generation efficiency is influenced.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a fuel cell electric motor car that structural design is reasonable, and the radiating effect is good, can improve generating efficiency and power density, is favorable to improving duration.
In order to solve the technical problems, the invention adopts the following technical scheme:
the fuel cell electric vehicle comprises a fuel cell and is characterized in that the fuel cell comprises a plurality of single cells arranged side by side, each single cell comprises a cathode plate and an anode plate which are arranged oppositely, a cooling liquid conveying port and an anode gas conveying port which are communicated along the thickness direction are correspondingly arranged on the cathode plate and the anode plate, and the number of the cooling liquid conveying port and the number of the anode gas conveying ports are two; the middle part of one side of the cathode plate is provided with an air flow channel which is arranged in a through mode along the transverse direction or the longitudinal direction, and the other side of the cathode plate is provided with a first cooling liquid flow channel which is communicated with the two cooling liquid conveying ports; an anode flow field region is arranged in the middle of one side of the anode plate, anode flow channels are arranged in the anode flow field region at intervals, and the anode flow channels are communicated with the two anode gas conveying ports; and the other side of the anode plate is provided with a second cooling liquid flow channel communicated with the two cooling liquid conveying openings.
In the structure, the air flow channel is arranged along the transverse direction or the longitudinal direction of the cathode plate in a penetrating way, namely an open structure is formed, so that air can directly pass through the air flow channel to participate in reaction; the anode gas enters the anode flow channel through one of the anode gas delivery ports to participate in reaction, and flows out from the other anode gas delivery port; the cooling liquid enters the first cooling flow channel through one of the cooling liquid conveying openings and flows out of the other cooling liquid conveying opening, reaction heat on the anode plate and the cathode plate is taken away, and therefore water cooling heat dissipation is conducted. The cooling liquid has high heat dissipation efficiency, so that the heat dissipation requirements under various working conditions can be met, air cooling heat dissipation is not required by increasing the air flow rate in the air flow channel, on one hand, the loss of reaction water can be reduced, the reaction film can keep enough humidity, dry film power generation is avoided, and the reaction efficiency is ensured; on the other hand, after the air flow rate is reduced, the oxygen in the air can have more sufficient reaction time, so that the reaction efficiency is ensured, the generating efficiency and the net power density of the fuel cell are improved, and the cruising ability of the electric vehicle is favorably improved.
The fuel cell is mounted on the frame, one side of the fuel cell, which faces the rear end of the frame, is connected with an air guide cover, the air guide cover surrounds the edge of the fuel cell and extends backwards to form an air outlet, and an air guide fan blowing backwards is arranged in the air guide cover.
In this way, since the air guide hood extends backwards around the edge of the fuel cell and the air guide fan is arranged in the air guide hood, after the air guide fan is started, the air guide fan discharges the air between the air guide fan and the fuel cell backwards, so that a negative pressure space is formed between the air guide fan and the fuel cell, and the air at the front end of the fuel cell flows through the air flow channel of the fuel cell under the action of the pressure difference. Because the negative pressure is generally uniformly distributed at each corner of the space, the pressure difference at each position is almost equal, so that the air at the front end of the fuel cell can uniformly flow through all the air flow channels, each single cell in the fuel cell can fully exert the respective optimal reaction power, and the overall efficiency of the fuel cell is improved.
Furthermore, a clapboard which is arranged in parallel with the fuel cell is arranged in the air guide hood, and a through hole for installing the air guide fan is arranged on the clapboard.
Therefore, the negative pressure space is separated from the rear end of the air guide cover through the partition plate, air can only pass through the air guide fan, and air is prevented from flowing back to the negative pressure space from the outer side of the air guide fan, so that the air flow guide efficiency of the air guide fan can be improved.
Furthermore, four through holes are uniformly formed in the partition plate, and four air guide fans are installed on the partition plate.
Therefore, the air pressure distribution in the negative pressure space can be ensured to be more uniform, and the uniform distribution of air flow in the fuel cell is ensured.
Furthermore, one side of the fuel cell, which faces the front end of the frame, is connected with an air inlet cover, the air inlet cover is buckled at the edge of the fuel cell and forms an air inlet space with the front end of the fuel cell, the two sides of the air inlet cover in the width direction of the frame extend forwards to form a main air inlet, and a main air inlet duct communicated with the air inlet space is arranged between the main air inlet and the air inlet space.
Because the middle space of the vehicle body needs to be provided with vehicle body parts which are easy to be shielded, the main air inlet ducts are arranged at the two sides of the vehicle frame, so that air can better enter the air inlet space through the main air inlet ducts in the running process of the vehicle.
Furthermore, the two sides of the air inlet cover are also provided with auxiliary air inlets formed by extending forwards, an auxiliary air inlet duct communicated with the air inlet space is arranged between the auxiliary air inlets and the air inlet space, and the auxiliary air inlet duct is positioned below the main air inlet duct; and a valve which can be opened and closed is arranged in the auxiliary air inlet duct.
When the electric vehicle needs high-power output, the fuel cell is required to have higher generating efficiency, the generating efficiency of the fuel cell is required to be ensured, on one hand, enough air input is required to be ensured, on the other hand, the heat dissipation of the fuel cell is also required to be improved, the opening and closing of the auxiliary air inlet channel can be controlled through the valve by arranging the auxiliary air inlet channel and the valve which can be opened and closed, so that the air input is adjusted, when the valve is opened, the air input is increased, enough air can be conveyed, the heat dissipation can be improved, water cooling is supplemented through air cooling, the pump power of a water cooling system can be reduced as much as possible, the internal consumption of electric energy is reduced, and the higher net power output of the.
Furthermore, the valve is installed in the auxiliary air inlet duct through a vertically arranged rotating shaft, and one end of the rotating shaft penetrates through the auxiliary air inlet duct and is provided with a driving motor.
Furthermore, the cathode plate and the anode plate are integrally rectangular, and the two cooling liquid conveying ports and the two anode gas conveying ports are arranged at two ends of the cathode plate and the anode plate in the length direction in a distributed mode.
Therefore, the anode gas and the cooling liquid flow from one end to the other end of the cathode plate and the anode plate, and the manufacturing difficulty of the air flow channel and the cooling liquid flow channel can be reduced.
Furthermore, the air flow channels are arranged in a penetrating manner along the width direction of the anode plate and are uniformly distributed along the length direction.
Like this, set up a plurality ofly with the air runner along length direction equipartition for the entry total area of air runner is bigger, is favorable to more air to get into the air runner fast and participates in the reaction, thereby guarantees the reaction demand.
Furthermore, a converging area is further arranged between the anode flow field area and the anode gas conveying port, and shunt channels are uniformly distributed in the converging area and communicated between the anode flow channel and the anode gas conveying port.
Like this, through the subchannel that the equipartition set up will be via the anode gas who sends into of anode gas delivery port evenly guide to the anode runner in the anode flow field area in, all have equivalent anode gas in makeing every runner to can full play the biggest reaction efficiency in every runner, and then improve battery overall reaction efficiency. Meanwhile, the reacted anode gas can be smoothly discharged through the shunt passage in the other collecting area, so that the anode flow passage is smooth, and the continuous and efficient reaction is ensured.
In conclusion, the invention has the advantages of reasonable structural design, good heat dissipation effect, capability of improving the power generation efficiency and the power density, contribution to improving the cruising ability and the like.
Drawings
Fig. 1 is a schematic structural diagram of a fuel cell electric vehicle according to an embodiment of the present invention.
FIG. 2 is a schematic view of the configuration of the air guide fan and air guide shroud portion of FIG. 1.
Fig. 3 is a schematic structural view of the front surface of the cathode plate in this embodiment.
Fig. 4 is a schematic structural view of the back surface of the cathode plate in this embodiment.
Fig. 5 is a schematic structural diagram of the front surface of the anode plate in this embodiment.
Fig. 6 is a schematic structural diagram of the back surface of the anode plate in this embodiment.
Figure 7 is another schematic diagram of the front side of the anode plate.
Detailed Description
The present invention will be described in further detail with reference to examples, as shown in FIGS. 1 to 7.
A fuel cell electric vehicle comprises a fuel cell, wherein the fuel cell comprises a plurality of single cells arranged side by side, each single cell comprises a cathode plate 1 and an anode plate 2 which are arranged oppositely, a cooling liquid conveying port 3 and an anode gas conveying port 4 which are communicated along the thickness direction are correspondingly arranged on the cathode plate 1 and the anode plate 2, and the number of the cooling liquid conveying ports 3 and the number of the anode gas conveying ports 4 are two; the middle part of one side of the cathode plate 1 is provided with an air flow channel 11 which is arranged in a through mode along the transverse direction or the longitudinal direction, and the other side of the cathode plate is provided with a first cooling liquid flow channel 12 which is communicated with the two cooling liquid conveying ports 3; an anode flow field area 21 is arranged in the middle of one side of the anode plate 2, anode flow channels 22 are arranged in the anode flow field area 21 at intervals, and the anode flow channels 22 are communicated with the two anode gas conveying ports 4; the other side of the anode plate 2 is provided with a second cooling liquid flow channel 23 which is communicated with the two cooling liquid conveying openings 3.
In the structure, the air flow channel is arranged along the transverse direction or the longitudinal direction of the cathode plate in a penetrating way, namely an open structure is formed, so that air can directly pass through the air flow channel to participate in reaction; the anode gas enters the anode flow channel through one of the anode gas delivery ports to participate in reaction, and flows out from the other anode gas delivery port; the cooling liquid enters the first cooling flow channel through one of the cooling liquid conveying openings and flows out of the other cooling liquid conveying opening, reaction heat on the anode plate and the cathode plate is taken away, and therefore water cooling heat dissipation is conducted. The cooling liquid has high heat dissipation efficiency, so that the heat dissipation requirements under various working conditions can be met, air cooling heat dissipation is not required by increasing the air flow rate in the air flow channel, on one hand, the loss of reaction water can be reduced, the reaction film can keep enough humidity, dry film power generation is avoided, and the reaction efficiency is ensured; on the other hand, after the air flow rate is reduced, the oxygen in the air can have more sufficient reaction time, so that the reaction efficiency is ensured, the generating efficiency and the net power density of the fuel cell are improved, and the cruising ability of the electric vehicle is favorably improved.
In this embodiment, as shown in fig. 1 and fig. 2, the fuel cell assembly further includes a frame 5, the fuel cell is mounted on the frame 5, one side of the fuel cell facing the rear end of the frame 5 is connected with an air guide hood 6, the air guide hood 6 surrounds the edge of the fuel cell and extends backwards to form an air outlet, and an air guide fan 7 blowing air backwards is disposed in the air guide hood 6.
In this way, since the air guide hood extends backwards around the edge of the fuel cell and the air guide fan is arranged in the air guide hood, after the air guide fan is started, the air guide fan discharges the air between the air guide fan and the fuel cell backwards, so that a negative pressure space is formed between the air guide fan and the fuel cell, and the air at the front end of the fuel cell flows through the air flow channel of the fuel cell under the action of the pressure difference. Because the negative pressure is generally uniformly distributed at each corner of the space, the pressure difference at each position is almost equal, so that the air at the front end of the fuel cell can uniformly flow through all the air flow channels, each single cell in the fuel cell can fully exert the respective optimal reaction power, and the overall efficiency of the fuel cell is improved.
The air guide hood 6 is internally provided with a clapboard 8 which is arranged in parallel with the fuel cell, and the clapboard 8 is provided with a through hole for installing the air guide fan 7.
Therefore, the negative pressure space is separated from the rear end of the air guide cover through the partition plate, air can only pass through the air guide fan, and air is prevented from flowing back to the negative pressure space from the outer side of the air guide fan, so that the air flow guide efficiency of the air guide fan can be improved.
In this embodiment, to further improve the effect, as shown in fig. 2, four through holes are uniformly formed in the partition plate 8, and four air guiding fans are installed.
Therefore, the air pressure distribution in the negative pressure space can be ensured to be more uniform, and the uniform distribution of air flow in the fuel cell is ensured.
During implementation, one side of the fuel cell, which faces the front end of the frame 5, is connected with an air inlet cover 9, the air inlet cover 9 covers and buckles the edge of the fuel cell, an air inlet space is formed between the air inlet cover 9 and the front end of the fuel cell, two sides of the air inlet cover 9 in the width direction of the frame 5 extend forwards to form a main air inlet 91, and a main air inlet duct communicated with the air inlet space is arranged between the main air inlet 91.
Because the middle space of the vehicle body needs to be provided with vehicle body parts which are easy to be shielded, the main air inlet ducts are arranged at the two sides of the vehicle frame, so that air can better enter the air inlet space through the main air inlet ducts in the running process of the vehicle.
In implementation, the two sides of the air intake cover 9 are further provided with auxiliary air inlets 92 formed by extending forwards, an auxiliary air intake duct communicated with the air intake space is arranged between the auxiliary air inlets 92 and the air intake space, and the auxiliary air intake duct is located below the main air intake duct; and a valve 93 capable of being opened and closed is arranged in the auxiliary air inlet duct.
When the electric vehicle needs high-power output, the fuel cell is required to have higher generating efficiency, the generating efficiency of the fuel cell is required to be ensured, on one hand, enough air input is required to be ensured, on the other hand, the heat dissipation of the fuel cell is also required to be improved, the opening and closing of the auxiliary air inlet channel can be controlled through the valve by arranging the auxiliary air inlet channel and the valve which can be opened and closed, so that the air input is adjusted, when the valve is opened, the air input is increased, enough air can be conveyed, the heat dissipation can be improved, water cooling is supplemented through air cooling, the pump power of a water cooling system can be reduced as much as possible, the internal consumption of electric energy is reduced, and the higher net power output of the.
During implementation, the valve 93 is installed in the auxiliary air inlet duct through a vertically arranged rotating shaft, and one end of the rotating shaft penetrates through the auxiliary air inlet duct and is provided with a driving motor.
When the device is implemented, the cathode plate 1 and the anode plate 2 are rectangular integrally, and the two cooling liquid conveying ports 3 and the two anode gas conveying ports 4 are arranged at two ends of the cathode plate 1 and the anode plate 2 in the length direction in a distributed manner.
Therefore, the anode gas and the cooling liquid flow from one end to the other end of the cathode plate and the anode plate, and the manufacturing difficulty of the air flow channel and the cooling liquid flow channel can be reduced.
In implementation, the air flow channels 11 are arranged in a penetrating manner along the width direction of the anode plate 1, and a plurality of air flow channels are uniformly distributed along the length direction.
Like this, set up a plurality ofly with the air runner along length direction equipartition for the entry total area of air runner is bigger, is favorable to more air to get into the air runner fast and participates in the reaction, thereby guarantees the reaction demand.
In practice, a converging area 24 is further arranged between the anode flow field area 21 and the anode gas delivery port 4, and branch channels are uniformly distributed in the converging area 24 and communicated between the anode flow channel 22 and the anode gas delivery port 4.
Like this, through the subchannel that the equipartition set up will be via the anode gas who sends into of anode gas delivery port evenly guide to the anode runner in the anode flow field area in, all have equivalent anode gas in makeing every runner to can full play the biggest reaction efficiency in every runner, and then improve battery overall reaction efficiency. Meanwhile, the reacted anode gas can be smoothly discharged through the shunt passage in the other collecting area, so that the anode flow passage is smooth, and the continuous and efficient reaction is ensured.
When the anode flow field area 21 is implemented, the anode plate 2 is integrally and concavely arranged, the anode flow field area 21 is internally provided with a flow channel rib 25 arranged along the length direction of the anode plate 2, the flow channel rib 25 is arranged in a plurality of flow channel ribs 25 side by side along the length direction of the anode plate 2, and the anode flow channel 22 is formed between the adjacent two flow channel ribs 25.
In practice, the anode flow channels 22 are parallel flow channels or serpentine flow channels.
In practice, the bus-off area 24 is integrally recessed on the anode plate 2 and is integrally connected to the anode flow field area 21; a plurality of diversion ribs 26 are arranged in the convergence area 24, one end of each diversion rib 26 is uniformly distributed at the anode gas delivery port 4, the other end of each diversion rib 26 is integrally connected with the corresponding flow channel rib 25, and the number of the anode flow channels 22 between any two adjacent diversion ribs 26 is equal.
Like this, in the entry of anode gas passes through the water conservancy diversion bead and distributes anode gas evenly to the anode flow between two water conservancy diversion beads, carry out the secondary distribution by the runner bead again to can guarantee that anode gas can be more even distribute to every anode flow in, guarantee that electrochemical reaction's high efficiency goes on.
In practice, the bus-off area 24 is integrally recessed on the anode plate 2 and is integrally connected to the anode flow field area 21; the interior of the convergence sub-area 24 is densely provided with the flow guide strips 27 which are arranged in a protruding mode, the flow guide strips 27 are sequentially connected into flow guide ribs at intervals along the length direction of the flow guide strips, and the flow guide ribs are connected between the anode gas conveying port 4 and the anode flow field area 21 and are uniformly distributed in the convergence sub-area 24.
Therefore, the input anode gas can flow to the anode flow field area along the flow guide ribs and can flow to the adjacent sub-runners through the intervals between the flow guide ribs, and the anode gas can be distributed more uniformly.
In practice, a plurality of columns 28 are arranged in a matrix between the sink area 24 and the anode flow field area 21, and the diameter of the columns 28 is smaller than or equal to the width of the flow channel rib 25.
In this way, the anode gas entering the anode flow field region can be further dispersed by the columns in a matrix arrangement.
In implementation, the first cooling liquid flow channel 12 and the second cooling liquid flow channel 23 both include two cooling flow channels, and one end of each of the two cooling flow channels is connected to one of the cooling liquid conveying ports 3, extends to the middle part along the edge, is bent outward in a continuous S shape from the middle part, and is connected to the other cooling liquid conveying port 3.
Like this, can directly carry the middle part to the battery earlier with the cryogenic cooling liquid of input, carry out priority to the high temperature region at middle part and dispel the heat, then flow the heat dissipation to low temperature region relatively for the whole temperature distribution of battery is more even, keeps best reaction temperature, thereby improves the generating efficiency.
The above description is only exemplary of the present invention and should not be taken as limiting, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The fuel cell electric vehicle comprises a fuel cell and is characterized in that the fuel cell comprises a plurality of single cells arranged side by side, each single cell comprises a cathode plate (1) and an anode plate (2) which are arranged oppositely, a cooling liquid conveying port (3) and an anode gas conveying port (4) which penetrate through the cathode plate (1) and the anode plate (2) along the thickness direction are correspondingly arranged on the cathode plate (1) and the anode plate (2), and the number of the cooling liquid conveying ports (3) and the number of the anode gas conveying ports (4) are respectively two; the middle part of one side of the cathode plate (1) is provided with an air flow channel (11) which is arranged in a through mode along the transverse direction or the longitudinal direction, and the other side of the cathode plate is provided with a first cooling liquid flow channel (12) which is communicated with the two cooling liquid conveying ports (3); an anode flow field area (21) is arranged in the middle of one side of the anode plate (2), anode flow channels (22) arranged at intervals are arranged in the anode flow field area (21), and the anode flow channels (22) are communicated with the two anode gas conveying ports (4); and the other side of the anode plate (2) is provided with a second cooling liquid flow channel (23) communicated with the two cooling liquid conveying openings (3).
2. The fuel cell electric vehicle as set forth in claim 1, further comprising a frame (5), wherein the fuel cell is mounted on the frame (5), an air guide hood (6) is connected to a side of the fuel cell facing the rear end of the frame (5), the air guide hood (6) surrounds the edge of the fuel cell and extends rearward to form an air outlet, and an air guide fan (7) blowing air rearward is provided in the air guide hood (6).
3. The fuel cell electric vehicle as set forth in claim 2, characterized in that a partition plate (8) arranged in parallel with the fuel cell is provided in the air guide hood (6), and a through hole for installing the air guide fan (7) is provided in the partition plate (8).
4. The fuel cell electric vehicle according to claim 3, wherein the partition plate (8) is uniformly provided with four through holes and is mounted with four air guide fans.
5. The fuel cell electric vehicle as set forth in claim 2, characterized in that an air inlet cover (9) is connected to one side of the fuel cell facing the front end of the frame (5), the air inlet cover (9) is fastened at the edge of the fuel cell and forms an air inlet space with the front end of the fuel cell, the air inlet cover (9) extends forwards at two sides of the frame (5) in the width direction to form main air inlets (91), and a main air inlet duct is communicated between the main air inlets (91) and the air inlet space.
6. The fuel cell electric vehicle as set forth in claim 5, characterized in that the intake hood (9) further has secondary intake vents (92) formed to extend forward on both sides thereof, and a secondary intake duct communicating between the secondary intake vents (92) and the intake space is provided below the primary intake duct; and a valve (93) capable of being opened and closed is arranged in the auxiliary air inlet duct.
7. The fuel cell electric vehicle according to claim 6, wherein the valve (93) is installed in the secondary air intake duct by a vertically arranged rotary shaft, one end of which passes through the secondary air intake duct and is installed with a driving motor.
8. The fuel cell electric vehicle according to claim 1, wherein the cathode plate (1) and the anode plate (2) are rectangular as a whole, and the two coolant supply ports (3) and the two anode gas supply ports (4) are provided at both ends of the cathode plate (1) and the anode plate (2) in the length direction in a distributed manner.
9. The fuel cell electric vehicle according to claim 8, wherein the air flow channels (11) are provided so as to penetrate in the width direction of the anode plate (1) and are provided in plurality in the longitudinal direction.
10. The fuel cell electric vehicle according to claim 1, wherein a convergence area (24) is further provided between the anode flow field area (21) and the anode gas delivery port (4), and branch channels are uniformly distributed in the convergence area (24) and communicated between the anode flow channel (22) and the anode gas delivery port (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011353914.8A CN112436162A (en) | 2020-11-27 | 2020-11-27 | Fuel cell electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011353914.8A CN112436162A (en) | 2020-11-27 | 2020-11-27 | Fuel cell electric vehicle |
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| Publication Number | Publication Date |
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| CN112436162A true CN112436162A (en) | 2021-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011353914.8A Pending CN112436162A (en) | 2020-11-27 | 2020-11-27 | Fuel cell electric vehicle |
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| CN (1) | CN112436162A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1571204A (en) * | 2003-07-14 | 2005-01-26 | 亚太燃料电池科技股份有限公司 | Cooling device for air-cooled fuel cell stack |
| CN102122719A (en) * | 2010-01-12 | 2011-07-13 | 中兴电工机械股份有限公司 | Air-cooled fuel cell structure with flow guide element |
| JP2016030518A (en) * | 2014-07-29 | 2016-03-07 | スズキ株式会社 | Fuel cell two-wheel vehicle |
| CN111180754A (en) * | 2020-01-20 | 2020-05-19 | 同济大学 | High-power metal plate fuel cell stack |
| CN111640959A (en) * | 2020-06-02 | 2020-09-08 | 浙江锋源氢能科技有限公司 | Single cell assembly and fuel cell stack |
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2020
- 2020-11-27 CN CN202011353914.8A patent/CN112436162A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1571204A (en) * | 2003-07-14 | 2005-01-26 | 亚太燃料电池科技股份有限公司 | Cooling device for air-cooled fuel cell stack |
| CN102122719A (en) * | 2010-01-12 | 2011-07-13 | 中兴电工机械股份有限公司 | Air-cooled fuel cell structure with flow guide element |
| JP2016030518A (en) * | 2014-07-29 | 2016-03-07 | スズキ株式会社 | Fuel cell two-wheel vehicle |
| CN111180754A (en) * | 2020-01-20 | 2020-05-19 | 同济大学 | High-power metal plate fuel cell stack |
| CN111640959A (en) * | 2020-06-02 | 2020-09-08 | 浙江锋源氢能科技有限公司 | Single cell assembly and fuel cell stack |
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Application publication date: 20210302 |
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