CN113775535A - Air compressor system with cooling function, fuel cell system and control method - Google Patents
Air compressor system with cooling function, fuel cell system and control method Download PDFInfo
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- CN113775535A CN113775535A CN202111061356.2A CN202111061356A CN113775535A CN 113775535 A CN113775535 A CN 113775535A CN 202111061356 A CN202111061356 A CN 202111061356A CN 113775535 A CN113775535 A CN 113775535A
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- 239000000446 fuel Substances 0.000 title claims abstract description 85
- 238000001816 cooling Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000006835 compression Effects 0.000 claims abstract description 93
- 238000007906 compression Methods 0.000 claims abstract description 93
- 239000000110 cooling liquid Substances 0.000 claims abstract description 56
- 230000017525 heat dissipation Effects 0.000 claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims description 3
- UQMRAFJOBWOFNS-UHFFFAOYSA-N butyl 2-(2,4-dichlorophenoxy)acetate Chemical compound CCCCOC(=O)COC1=CC=C(Cl)C=C1Cl UQMRAFJOBWOFNS-UHFFFAOYSA-N 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/5826—Cooling at least part of the working fluid in a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
- F04D17/12—Multi-stage pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
- F04D25/082—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit having provision for cooling the motor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/5806—Cooling the drive system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/5826—Cooling at least part of the working fluid in a heat exchanger
- F04D29/5833—Cooling at least part of the working fluid in a heat exchanger flow schemes and regulation thereto
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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
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04701—Temperature
- H01M8/04738—Temperature of auxiliary devices, e.g. reformer, compressor, burner
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Sustainable Development (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses an air compressor system with a cooling function, a fuel cell system and a control method, comprising a driving motor, a primary air compression system, a secondary air compression system and an intercooler, a temperature sensor is arranged at a third air outlet of the secondary air compression system, the temperature sensor detects the temperature of air discharged from the third air outlet of the secondary air compression system, and sent to a fuel cell system controller, which controls the flow of cooling liquid input to an intercooler of the cooling circulation system according to the temperature signal to dynamically adjust the heat dissipation capacity, thereby indirectly adjusting the temperature of the discharged air at the third air outlet of the secondary air compression system to form closed-loop control, the temperature of air discharged from the third air outlet of the secondary air compression system can be effectively controlled, the requirements of the fuel cell stack module are met, and the operating efficiency and the reliability of the system are improved.
Description
The technical field is as follows:
the invention relates to an air compressor system with a cooling function, a fuel cell system and a control method.
Background art:
fuel cells are an efficient and clean energy conversion device. The air compressor compresses external air, and then sends the compressed air into the fuel cell stack module to provide oxygen for one side of the cathode of the stack module. In the stack module, oxygen and hydrogen fed into the air undergo an electrochemical reaction, and the generated water is discharged together with the remaining air. The air compressor is a key component which is not lacked in the fuel cell, the power consumed by the air compressor accounts for about 15-25% of the total output power of the fuel cell, and the air compressor is a large energy consumer in the fuel cell auxiliary system, so how to effectively improve the efficiency of the air compressor and further improve the overall efficiency of the whole fuel cell system is a problem to be solved urgently in the whole industry.
At present, the centrifugal air compressor is widely used in fuel cells with the advantages of high efficiency, energy conservation, environmental protection and the like. Generally, a centrifugal air compressor compresses air to pressure required by the operating condition of a fuel cell in a two-stage pressurization mode, the temperature of the compressed air can reach more than 120 ℃, the air with high temperature is sent into a galvanic pile to damage the galvanic pile, the air can be sent into the galvanic pile for reaction only by cooling the air to 60-70 ℃ through an intercooler, the intercooler occupies a large space in the arrangement of the fuel cell, and the volume-to-power ratio of the fuel cell is reduced. In addition, the air compressor machine is the pressure boost of two-stage, and every level pressure boost all can be to the temperature of improvement air, and first-stage pressure boost is the back of air temperature improvement, and high-temperature gas molecule is more active more difficult compression more, and second-stage pressure boost must consume bigger power just can reach the purpose of secondary pressure boost.
Therefore, an air compressor with a cooling function needs to be designed, the air temperature at the outlet of the air compressor is reduced by adding the intercooling module between the first-stage supercharging and the second-stage supercharging, the efficiency of the air compressor is improved, an intercooler in a fuel cell is omitted, or the size of the intercooler in the fuel cell is reduced. Therefore, the efficiency of the whole fuel cell is improved, the structure is optimized, the volume is reduced, and the cost is reduced. For example, patent publication numbers are: CN209212609U, patent name: the invention patent of a two-stage air compression system with radial and axial diffusers has disclosed the following related technical solutions, but the above technical solutions have the following defects: 1) the air temperature output by the output end of the second-stage supercharging of the air compressor is lack of effective detection, and the intercooling module does not adjust the heat dissipation capacity of the intercooling module according to the air temperature output by the air compressor, so that the closed-loop control requirement cannot be formed, and the work of the fuel cell is influenced; 2) the motor of the air compressor works in a high temperature environment for a long time, so that the service life of a bearing system is influenced, and the service life of the motor is further influenced.
The invention content is as follows:
the invention aims to provide an air compressor system with a cooling function, and solves the technical problem that the air compressor system with the cooling function in the prior art cannot form closed-loop control in cooperation with an intercooler due to lack of temperature detection of output air, and the work of a fuel cell is influenced.
The invention further aims to provide an air compressor system with a cooling function, and the air compressor system with the cooling function solves the technical problems that the service life of a bearing is influenced and the faults of a motor are increased due to overhigh temperature of the working environment of a driving motor in the air compressor system with the cooling function in the prior art.
The third purpose of the invention is to provide a fuel cell system, which solves the technical problems of large volume, low modularization degree and difficult arrangement caused by separate manufacture and separated arrangement of an air compressor system and an intercooler in the prior art.
The purpose of the invention is realized by the following technical scheme.
Air compressor machine system with cooling function, including driving motor, one-level air compression system, second grade air compression system and intercooler, one-level air compression system and second grade air compression system install respectively at driving motor's both ends and by driving motor's main shaft drive, wherein:
a first air inlet of the primary air compression system performs primary compression on air and then outputs high-temperature primary compressed air;
a second air inlet of the intercooler is connected with a first air outlet of the primary air compression system, and high-temperature primary compressed air output from the primary air compression system is cooled by the intercooler to output low-temperature primary compressed air;
a third air inlet of the secondary air compression system is connected with a second air outlet of the intercooler, and a part of low-temperature primary compressed air output by the intercooler enters the third air inlet of the secondary air compression system, is subjected to secondary compression and is output from the third air outlet of the secondary air compression system;
the method is characterized in that: and a temperature sensor is arranged at a third air outlet of the secondary air compression system, and the temperature sensor detects the temperature of air discharged from the third air outlet of the secondary air compression system.
The other part of low-temperature primary compressed air output by the intercooler is sent to the interior of the driving motor to dissipate heat of a stator assembly and a bearing system in the driving motor.
The first-stage air compression system and the second-stage air compression system are centrifugal fan systems and comprise a volute and a wind wheel, and the wind wheel is connected with a main shaft of a driving motor.
The intercooler comprises a shell, a second air inlet, a second air outlet and a heat exchange device, wherein the heat exchange device is installed in the shell, the second air inlet, the second air outlet and the air branch outlet are respectively arranged at the bottom and the top of the shell, and the left side and the right side of the shell are respectively provided with a cooling liquid inlet and a cooling liquid outlet.
An air branch outlet of the intercooler is connected with an air inlet nozzle on the surface of the driving motor through a pipeline, then the stator assembly and the bearing system inside the driving motor are cooled, and finally the air is discharged from an air outlet nozzle on the surface of the driving motor.
A cooling liquid inlet cavity and a cooling liquid outlet cavity are arranged in the shell, the cooling liquid inlet cavity is communicated with a cooling liquid inlet, the cooling liquid outlet cavity is communicated with a cooling liquid outlet, and the heat exchange device is arranged between the cooling liquid inlet cavity and the cooling liquid outlet cavity.
The heat exchange device comprises a plurality of heat dissipation corrugated plates and a plurality of laminated plates with water channels, the heat dissipation corrugated plates and the laminated plates are distributed at intervals, a plurality of air flow channels are formed between the heat dissipation corrugated plates and the laminated plates, a second air inlet and a second air outlet are communicated through the air flow channels between air branch outlets, an upper baffle and a lower baffle are respectively installed at two ends of each laminated plate, the upper baffle and a shell form a cooling liquid inlet cavity, the lower baffle and the shell form a cooling liquid outlet cavity, and the cooling liquid inlet cavity and the cooling liquid outlet cavity are communicated through the water channels.
A first air outlet of the primary air compression system is communicated with a second air inlet of the intercooler; the second air outlet of the intercooler is connected to a third air inlet of the secondary air compression system through a connecting pipeline, the end portion of the connecting pipeline is provided with a mounting flange, a mounting boss protrudes from the top of the shell, the second air outlet of the intercooler is arranged in the middle of the mounting boss, and the mounting flange at the end portion of the connecting pipeline can be quickly and conveniently connected to the mounting boss.
A fuel cell system comprises a fuel cell stack module, a fuel cell system controller, a cooling circulation system and an air supply system, wherein the air supply system comprises a filter, an air compressor system and a humidifier, air is filtered by the filter, then pressurized by the air compressor system, then the humidity of the air is adjusted by the humidifier, and finally the air is conveyed to an air inlet of the fuel cell stack module, and the fuel cell system controller is characterized in that: the air compressor system is the air compressor system with the cooling function, the temperature sensor is installed at the third air outlet of the secondary air compression system, the temperature sensor detects the temperature of air discharged from the third air outlet of the secondary air compression system and sends the air to the fuel cell system controller, and the fuel cell system controller controls the flow of cooling liquid input to the intercooler of the cooling circulation system according to the temperature signal to dynamically adjust the heat dissipation capacity, so that the temperature of the air discharged from the third air outlet of the secondary air compression system is indirectly adjusted.
A control method of a fuel cell system that employs the above fuel cell system, characterized in that: when the fuel cell system controller controls the fuel cell stack module to start working, a self-checking flow is started:
step 1: judging whether an air temperature signal T detected by a temperature sensor is greater than a first set temperature T1, if so, controlling the cooling circulation system to increase the flow of cooling liquid input to an intercooler to improve the heat dissipation capacity of the intercooler by a fuel cell system controller, cooling air, and then entering the step 2; if not, the step 2 is also carried out;
step 2: judging whether an air temperature signal T detected by the temperature sensor is less than a second set temperature T2, if so, controlling the cooling circulation system to reduce the flow of cooling liquid input to the intercooler to reduce the heat dissipation capacity of the intercooler by the fuel cell system controller, heating the air, and then entering the step 3; if not, the step 3 is also carried out;
and step 3: and judging whether the air temperature signal T detected by the temperature sensor is greater than a second set temperature T2 and less than a first set temperature T1, if so, controlling the cooling circulation system to maintain the flow of the cooling liquid which is currently input into the intercooler by the fuel cell system controller, maintaining the heat dissipation capacity of the conventional intercooler, and enabling the fuel cell to enter a normal working mode.
Compared with the prior art, the invention has the following effects:
1) the scheme of the invention is that an intercooler and an air compressor system are integrated together, the intercooler and the air compressor system comprise a driving motor, a primary air compression system, a secondary air compression system and an intercooler, the primary air compression system and the secondary air compression system are respectively arranged at two ends of the driving motor and driven by a main shaft of the driving motor, a temperature sensor is arranged at a third air outlet of the secondary air compression system, the temperature sensor detects the temperature of air discharged from the third air outlet of the secondary air compression system and sends the air to a fuel cell system controller, the fuel cell system controller controls the flow of cooling liquid input into the intercooler of a cooling circulation system according to a temperature signal to dynamically adjust the heat dissipation capacity, thereby indirectly adjusting the temperature of the air discharged from the third air outlet of the secondary air compression system, forming closed-loop control, effectively controlling the temperature of the air discharged from the third air outlet of the secondary air compression system, the requirements of the fuel cell stack module are met, and the operation efficiency and the reliability of the system are improved.
2) The intercooler of the invention also outputs another part of low-temperature primary compressed air to the interior of the driving motor to dissipate heat of the stator assembly and the bearing system in the driving motor, so that the driving motor always works at a lower temperature, the service life of the bearing is prolonged, and the working reliability of the motor is improved.
3) The invention discloses a fuel cell system, which comprises a fuel cell stack module, a fuel cell system controller, a cooling circulation system and an air supply system, wherein the air supply system comprises a filter, an air compressor system and a humidifier, air is filtered by the filter, then is pressurized by the air compressor system, then is humidity-regulated by the humidifier and finally is conveyed to an air inlet of the fuel cell stack module, and the fuel cell system is characterized in that: the air compressor system is the centrifugal air compressor system with the cooling function, the temperature sensor is installed at the third air outlet of the secondary air compression system, the temperature sensor detects the temperature of air discharged from the third air outlet of the secondary air compression system and sends the air to the fuel cell system controller, and the fuel cell system controller controls the flow of cooling liquid input to the intercooler of the cooling circulation system according to a temperature signal to dynamically adjust the heat dissipation capacity, so that the temperature of the discharged air of the third air outlet of the secondary air compression system is indirectly adjusted.
4) Other advantages of the present invention are described in detail in the examples section.
Description of the drawings:
FIG. 1 is a block schematic diagram of a first embodiment of the present invention;
FIG. 2 is an angled perspective view of an embodiment of the present invention;
FIG. 3 is a perspective view of another angle provided by an embodiment of the present invention;
fig. 4 is an exploded view of an angle provided by an embodiment of the present invention.
FIG. 5 is an exploded view of another angle provided by the first embodiment of the present invention;
fig. 6 is a perspective view of an intercooler according to an embodiment of the present invention;
fig. 7 is a structural sectional view of an intercooler according to an embodiment of the present invention;
FIG. 8 is a perspective view of a heat exchange device according to one embodiment of the present invention;
FIG. 9 is a block schematic diagram of a second embodiment of the present invention;
FIG. 10 is a schematic diagram of closed loop control according to a second embodiment of the present invention;
FIG. 11 is a flowchart of a third embodiment of the present invention.
The specific implementation mode is as follows:
the present invention will be described in further detail below with reference to specific embodiments and with reference to the accompanying drawings.
The first embodiment is as follows:
as shown in fig. 1 to 8, the air compressor system with cooling function provided in this embodiment includes a driving motor 1, a primary air compression system 2, a secondary air compression system 3 and a intercooler 4, the primary air compression system 2 and the secondary air compression system 3 are respectively installed at two ends of the driving motor 1 and are driven by a main shaft of the driving motor 1, wherein: the primary air compression system 2 has a first air inlet 21 and a first air outlet 22; the intercooler 4 has a second air inlet 44 and a second air outlet 46; the secondary air compression system 3 has a third air inlet and a third air outlet 31.
The first air inlet 21 of the primary air compression system 1 performs primary compression on air and then outputs high-temperature primary compressed air;
the second air inlet 44 of the intercooler 4 is connected to the first air outlet 22 of the primary air compression system 2, and the high-temperature primary compressed air output from the primary air compression system 2 is cooled by the intercooler 4 to output low-temperature primary compressed air;
a third air inlet of the secondary air compression system 3 is connected with a second air outlet 46 of the intercooler 4, and a part of low-temperature primary compressed air output by the intercooler 4 enters the third air inlet of the secondary air compression system 3, is subjected to secondary compression and is output from a third air outlet 31 of the secondary air compression system 3;
the method is characterized in that: a temperature sensor 32 is installed at the third air outlet 31 of the secondary air compression system 3, and the temperature sensor 32 detects the temperature of air discharged from the third air outlet of the secondary air compression system 3.
According to the invention, the temperature sensor is arranged at the third air outlet of the secondary air compression system, the temperature sensor detects the temperature of air discharged from the third air outlet of the secondary air compression system and sends the air to the fuel cell system controller, and the fuel cell system controller controls the flow of cooling liquid input into the intercooler of the cooling circulation system according to the temperature signal to dynamically adjust the heat dissipation capacity, so that the temperature of the air discharged from the third air outlet of the secondary air compression system is indirectly adjusted, closed-loop control is formed, the temperature of the air discharged from the third air outlet of the secondary air compression system can be effectively controlled, the requirement of a fuel cell stack module is met, and the operation efficiency and reliability of the system are improved.
The other part of low-temperature primary compressed air output by the intercooler 4 is sent to the inside of the driving motor 1 to dissipate heat of the stator assembly and the bearing system inside the driving motor 1, so that the driving motor 1 always works at a lower temperature, the service life of the bearing is prolonged, and the working reliability of the motor is improved.
As shown in fig. 1 to 8, the intercooler 4 is installed at a side of the driving motor 1, and air enters the primary air compression train 2 from the air compressor first air inlet 21 and is then discharged from the first air outlet 22 of the primary air compression train 2 to form high-temperature primary compressed air.
The first air outlet 22 of the primary air compression train 2 is communicated with the second air inlet 44 of the intercooler 4; the second air outlet 46 of the intercooler 4 is connected to the third air inlet of the two-stage air compression system 3 by a connecting duct 33.
The end of the connection pipeline 33 is provided with a mounting flange 331, the top of the housing 40 protrudes with a mounting boss 45, the second air outlet 46 of the intercooler 4 is arranged in the middle of the mounting boss 45, and the mounting flange 331 at the end of the connection pipeline 33 can be quickly and conveniently connected to the mounting boss 45.
The temperature sensor 32 is installed at the third air outlet 31 of the two-stage air compression system 3, the temperature sensor 32 detects the temperature of air discharged from the third air outlet 31 of the two-stage air compression system 3, the installation through hole 311 is dug in the tail pipe wall of the third air outlet 31, and the temperature sensor 32 is installed on the installation through hole 311 in an embedded mode.
The intercooler 4 comprises a shell 40, a second air inlet 44, a second air outlet 46 and a heat exchange device 6, the heat exchange device 6 is installed in the shell 40, the second air inlet 44, the second air outlet 46 and the air branch outlet 43 are respectively arranged at the bottom and the top of the shell 40, the left side and the right side of the shell 40 are respectively provided with a cooling liquid inlet 41 and a cooling liquid outlet 42, the structure is simple, and the layout is reasonable.
A cooling liquid inlet cavity 47 and a cooling liquid outlet cavity 48 are arranged in the shell 40, the cooling liquid inlet cavity 47 is communicated with the cooling liquid inlet 41, the cooling liquid outlet cavity 48 is communicated with the cooling liquid outlet 42, the heat exchange device 6 is arranged between the cooling liquid inlet cavity 47 and the cooling liquid outlet cavity 48, and the structure is simple and the layout is reasonable.
The heat exchange device 6 includes a plurality of corrugated heat dissipating plates 64 and a plurality of plates 63 having water channels 631, the corrugated heat dissipating plates 64 and the plates 63 are spaced apart from each other, a plurality of air flow channels 65 are formed between the corrugated heat dissipating plates 64 and the plates 63, the second air inlet 44 is communicated with the second air outlet 46 and the air branch outlet 43 through the air flow channels 65, and the coolant inlet chamber 47 is communicated with the coolant outlet chamber 48 through the water channels 631. An upper baffle 61 and a lower baffle 62 are respectively installed at two ends of the laminated plate 63, the upper baffle 61 and the shell 40 form a cooling liquid inlet cavity 47, and the lower baffle 62 and the shell 40 form a cooling liquid outlet cavity 48. The structure is compact, the installation is convenient, and the manufacture is easy.
The other part of the low-temperature primary compressed air output by the intercooler 4 is sent to the inside of the driving motor 1 to dissipate heat of the stator assembly and the bearing system inside the driving motor 1, the air branch outlet 43 of the intercooler 4 is connected with the air inlet nozzle 11 on the surface of the driving motor 1 through the pipeline 5, then the stator assembly and the bearing system inside the driving motor 1 are dissipated heat, and finally the air is discharged from the air outlet nozzle 12 on the surface of the driving motor 1. The cooling capacity of the intercooler 4 is fully utilized to cool the driving motor 1, the working reliability is ensured, and the service life of the motor is prolonged.
The primary air compression system 2 and the secondary air compression system 3 are both centrifugal fan systems and comprise a volute and a wind wheel, and the wind wheel is connected with a main shaft of a driving motor.
Example two:
as shown in fig. 9 and 10, the present embodiment is a fuel cell system, including a fuel cell stack module, a fuel cell system controller, a cooling circulation system, and an air supply system, where the air supply system includes a filter, an air compressor system, and a humidifier, air is filtered by the filter, then pressurized by the air compressor system, then air humidity is adjusted by the humidifier, and finally delivered to an air inlet of the fuel cell stack module, and the fuel cell system controller is characterized in that: the air compressor system is the air compressor system with the cooling function described in the first embodiment, a temperature sensor 32 is installed at a third air outlet 31 of the secondary air compression system 3, the temperature sensor 32 detects the temperature of air discharged from the third air outlet of the secondary air compression system 3 and sends the air to the fuel cell system controller, and the fuel cell system controller controls the flow of cooling liquid of the cooling circulation system, which is input to the intercooler 4, according to a temperature signal to dynamically adjust the heat dissipation capacity, so that the temperature of the air discharged from the third air outlet of the secondary air compression system 3 is indirectly adjusted. The closed-loop control is formed, the temperature of air discharged from a third air outlet of the secondary air compression system can be effectively controlled, the requirements of a fuel cell stack module are met, and the operating efficiency and the reliability of the system are improved. The integrated fuel cell is high in integration, forms modularization, can omit an independent intercooler component of a traditional fuel cell, and is small in size and easy to arrange.
Example three:
as shown in fig. 11, the present embodiment is a control method of a fuel cell system that employs the fuel cell system according to the second embodiment, characterized in that: when the fuel cell system controller controls the fuel cell stack module to start working, a self-checking flow is started:
step 1: judging whether the air temperature signal T detected by the temperature sensor 32 is greater than a first set temperature T1, if so, controlling the cooling circulation system to increase the flow of the cooling liquid input to the intercooler 4 by the fuel cell system controller to improve the heat dissipation capacity of the intercooler, cooling the air, and then entering the step 2; if not, the step 2 is also carried out;
step 2: judging whether the air temperature signal T detected by the temperature sensor 32 is less than a second set temperature T2, if so, controlling the cooling circulation system to reduce the flow of the cooling liquid input to the intercooler 4 by the fuel cell system controller to reduce the heat dissipation capacity of the intercooler, heating the air, and then entering the step 3; if not, the step 3 is also carried out;
and step 3: and judging whether the air temperature signal T detected by the temperature sensor 32 is greater than a second set temperature T2 and less than a first set temperature T1, if so, controlling the cooling circulation system to maintain the flow of the cooling liquid currently input into the intercooler 4 and the heat dissipation capacity of the conventional intercooler 4 by the fuel cell system controller, and enabling the fuel cell to enter a normal working mode.
The air temperature supplied to the fuel cell stack module in the starting or running process can be effectively ensured, so that the fuel cell stack module works more efficiently and reliably.
The above embodiments are only preferred embodiments of the present invention, but the present invention is not limited thereto, and any other changes, modifications, substitutions, combinations, simplifications, which are made without departing from the spirit and principle of the present invention, are all equivalent replacements within the protection scope of the present invention.
Claims (10)
1. Air compressor machine system with cooling function, including driving motor (1), one-level air compression system (2), second grade air compression system (3) and intercooler (4), one-level air compression system (2) and second grade air compression system (3) are installed respectively at the both ends of driving motor (1) and by the main shaft drive of driving motor (1), wherein:
a first air inlet (21) of the primary air compression system (1) performs primary compression on air and then outputs high-temperature primary compressed air;
a second air inlet (44) of the intercooler (4) is connected with a first air outlet (22) of the primary air compression system (2), and high-temperature primary compressed air output from the primary air compression system (2) is cooled by the intercooler (4) to output low-temperature primary compressed air;
a third air inlet of the secondary air compression system (3) is connected with a second air outlet (46) of the intercooler (4), and a part of low-temperature primary compressed air output by the intercooler (4) enters the third air inlet of the secondary air compression system (3) and is then subjected to secondary compression and output from a third air outlet (31) of the secondary air compression system (3);
the method is characterized in that: and a temperature sensor (32) is arranged at a third air outlet (31) of the secondary air compression system (3), and the temperature sensor (32) detects the temperature of air discharged from the third air outlet of the secondary air compression system (3).
2. The air compressor system with a cooling function according to claim 1, wherein: the other part of low-temperature primary compressed air output by the intercooler (4) is sent to the inside of the driving motor (1) to dissipate heat of a stator assembly and a bearing system inside the driving motor (1).
3. The air compressor system with a cooling function according to claim 2, wherein: the primary air compression system (2) and the secondary air compression system (3) are centrifugal fan systems and comprise a volute and a wind wheel, and the wind wheel is connected with a main shaft of the driving motor (1).
4. The air compressor system with a cooling function according to claim 1, 2 or 3, characterized in that: the intercooler (4) comprises a shell (40), a second air inlet (44), a second air outlet (46) and a heat exchange device (6), the heat exchange device (6) is installed in the shell (40), the second air inlet (44), the second air outlet (46) and an air branch outlet (43) are respectively arranged at the bottom and the top of the shell (40), and the left side and the right side of the shell (40) are respectively provided with a cooling liquid inlet (41) and a cooling liquid outlet (42).
5. The air compressor system with cooling function of claim 4, wherein: an air branch outlet (43) of the intercooler (4) is connected with an air inlet nozzle (11) on the surface of the driving motor (1) through a pipeline (5), then the stator assembly and the bearing system inside the driving motor (1) are cooled, and finally the air is discharged from an air outlet nozzle (12) on the surface of the driving motor (1).
6. The air compressor system with cooling function of claim 5, wherein: a cooling liquid inlet cavity (47) and a cooling liquid outlet cavity (48) are arranged in the shell (40), the cooling liquid inlet cavity (47) is communicated with the cooling liquid inlet (41), the cooling liquid outlet cavity (48) is communicated with the cooling liquid outlet (42), and the heat exchange device (6) is arranged between the cooling liquid inlet cavity (47) and the cooling liquid outlet cavity (48).
7. The air compressor system with cooling function of claim 6, wherein: the heat exchange device (6) comprises a plurality of heat dissipation corrugated plates (64) and a plurality of laminated plates (63) with water channels (631), the heat dissipation corrugated plates (64) and the laminated plates (63) are distributed at intervals, a plurality of air flow channels (65) are formed between the heat dissipation corrugated plates (64) and the laminated plates (63), a second air inlet (44) and a second air outlet (46) are communicated with each other through the air flow channels (65) between the air branch outlets (43), an upper baffle plate (61) and a lower baffle plate (62) are respectively installed at two ends of each laminated plate (63), the upper baffle plate (61) and the shell (40) form a cooling liquid inlet cavity (47), the lower baffle plate (62) and the shell (40) form a cooling liquid outlet cavity (48), and the cooling liquid inlet cavity (47) and the cooling liquid outlet cavity (48) are communicated through the water channels (631).
8. The air compressor system with cooling function of claim 7, wherein: a first air outlet (22) of the primary air compression system (2) is communicated with a second air inlet (44) of the intercooler (4); a second air outlet (46) of the intercooler (4) is connected to a third air inlet of the secondary air compression system (3) through a connection pipeline (33), a mounting flange (331) is arranged at the end of the connection pipeline (33), a mounting boss (45) protrudes from the top of the shell (40), the second air outlet (46) of the intercooler (4) is arranged in the middle of the mounting boss (45), and the mounting flange (331) at the end of the connection pipeline (33) can be quickly and conveniently connected to the mounting boss (45).
9. A fuel cell system comprises a fuel cell stack module, a fuel cell system controller, a cooling circulation system and an air supply system, wherein the air supply system comprises a filter, an air compressor system and a humidifier, air is filtered by the filter, then pressurized by the air compressor system, then the humidity of the air is adjusted by the humidifier, and finally the air is conveyed to an air inlet of the fuel cell stack module, and the fuel cell system controller is characterized in that: the air compressor system is the air compressor system with the cooling function as claimed in any one of claims 1 to 8, a temperature sensor (32) is installed at the third air outlet (31) of the secondary air compression system (3), the temperature sensor (32) detects the temperature of air discharged from the third air outlet of the secondary air compression system (3) and sends the air to the fuel cell system controller, and the fuel cell system controller controls the flow of cooling liquid of the cooling circulation system input to the intercooler (4) according to a temperature signal to dynamically adjust the heat dissipation capacity, so as to indirectly adjust the temperature of the air discharged from the third air outlet of the secondary air compression system (3).
10. A control method of a fuel cell system that employs the fuel cell system according to claim 9, characterized in that: when the fuel cell system controller controls the fuel cell stack module to start working, a self-checking flow is started:
step 1: judging whether an air temperature signal T detected by a temperature sensor (32) is greater than a first set temperature T1, if so, controlling the cooling circulation system to increase the flow of cooling liquid input to an intercooler (4) by a fuel cell system controller to improve the heat dissipation capacity of the intercooler, cooling air, and then entering the step 2; if not, the step 2 is also carried out;
step 2: judging whether an air temperature signal T detected by a temperature sensor (32) is lower than a second set temperature T2, if so, controlling the cooling circulation system to reduce the flow of cooling liquid input into an intercooler (4) by a fuel cell system controller to reduce the heat dissipation capacity of the intercooler, heating the air, and then entering the step 3; if not, the step 3 is also carried out;
and step 3: and judging whether the air temperature signal T detected by the temperature sensor (32) is greater than a second set temperature T2 and less than a first set temperature T1, if so, controlling the cooling circulation system to maintain the flow of the cooling liquid which is currently input into the intercooler (4) and maintain the heat dissipation capacity of the conventional intercooler (4) by the fuel cell system controller, and enabling the fuel cell to enter a normal working mode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111061356.2A CN113775535A (en) | 2021-09-10 | 2021-09-10 | Air compressor system with cooling function, fuel cell system and control method |
| PCT/CN2022/079841 WO2023035567A1 (en) | 2021-09-10 | 2022-03-09 | Air compressor system with cooling function, fuel cell system, and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111061356.2A CN113775535A (en) | 2021-09-10 | 2021-09-10 | Air compressor system with cooling function, fuel cell system and control method |
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| CN113775535A true CN113775535A (en) | 2021-12-10 |
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| CN202111061356.2A Pending CN113775535A (en) | 2021-09-10 | 2021-09-10 | Air compressor system with cooling function, fuel cell system and control method |
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| CN (1) | CN113775535A (en) |
| WO (1) | WO2023035567A1 (en) |
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| CN114857093A (en) * | 2022-06-21 | 2022-08-05 | 山东硕源动力科技有限公司 | Axial flow fan with rotating shaft part cooling function |
| WO2023035567A1 (en) * | 2021-09-10 | 2023-03-16 | 中山大洋电机股份有限公司 | Air compressor system with cooling function, fuel cell system, and control method |
| CN116378977A (en) * | 2023-04-06 | 2023-07-04 | 山东众海机械有限公司 | Magnetic suspension centrifugal air compressor secondary compression system |
| CN116838609A (en) * | 2023-07-05 | 2023-10-03 | 山东亿宁环保科技有限公司 | Claw type vacuum pump cooling system |
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| CN117021423B (en) * | 2023-07-28 | 2024-04-19 | 南通三本电子有限公司 | Intelligent heat radiation system for electronic controller die production |
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