CN216288536U - Intelligent heat dissipation system for proton exchange membrane fuel cell - Google Patents
Intelligent heat dissipation system for proton exchange membrane fuel cell Download PDFInfo
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- CN216288536U CN216288536U CN202123050664.3U CN202123050664U CN216288536U CN 216288536 U CN216288536 U CN 216288536U CN 202123050664 U CN202123050664 U CN 202123050664U CN 216288536 U CN216288536 U CN 216288536U
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- radiator
- cooling water
- fuel cell
- exchange membrane
- proton exchange
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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
- Y02E60/10—Energy storage using batteries
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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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Abstract
A intelligent cooling system for proton exchange membrane fuel cell, which comprises a controller, industry touch display, PLC monitored control system, the radiator, the heater, circulating water pump, the temperature saver, first temperature sensor, flowmeter and pressure sensor, the cooling water outlet of radiator is equipped with second temperature sensor, PLC monitored control system's signal input part respectively with first temperature sensor, second temperature sensor, the heater, flowmeter and pressure sensor are connected, the controller is connected with PLC monitored control system and industry touch display respectively, the signal output part of controller is connected with circulating water pump and the fan of radiator respectively. The utility model has scientific principle and novel design, monitors all parameters of the cooling water path of the proton exchange membrane fuel cell on line in real time, starts the circulating water pump and the fan in time and reduces the air temperature of the cooling radiator to improve the heat dissipation efficiency and ensure that the proton exchange membrane fuel cell works at proper environmental temperature when abnormality occurs.
Description
Technical Field
The utility model belongs to the technical field of fuel cells, and particularly relates to an intelligent heat dissipation system for a proton exchange membrane fuel cell.
Background
A Proton Exchange Membrane Fuel Cell (PEMFC) among fuel cells is an electrochemical device that directly converts chemical energy stored in H2 into electric energy, thermal energy, and water through a reaction with O2, can be operated at a higher power density at a lower temperature and pressure than other types of fuel cells, is not limited by the carnot cycle, can be continuously operated for a long time as long as there is sufficient hydrogen and oxygen, has advantages of high energy conversion efficiency, low noise, cleanliness and no pollution, modularity installation, low operating temperature, and the like, and has wide practical value and commercial prospects.
The working temperature of the galvanic pile is one of the important parameters of the proton exchange membrane fuel cell system, the temperature and the humidity inside the galvanic pile greatly influence the conductivity of protons inside the galvanic pile, and if the water temperature is too high, the cell is easy to lose efficacy, which influences the working life of the cell; if the water temperature is too low, the performance of the battery is not facilitated, and the service life of the battery is also shortened. Meanwhile, to limit the temperature difference between the cooling water inlet and the cooling water outlet of the fuel cell stack within a reasonable range, the performance of the fuel cell is reduced due to the uneven distribution of the temperature of the fuel cell stack, and the parasitic loss of a cooling system is increased due to the excessively small temperature difference. The traditional thermal management system of the proton exchange membrane fuel cell has a time lag characteristic, and the operation working condition and the operation condition of the fuel cell system are complex, so that the intelligent heat dissipation treatment is urgently needed to be carried out on the pile working temperature of the proton exchange membrane fuel cell, and the dynamic performance and the service life of the proton exchange membrane fuel cell can be improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provides the intelligent heat dissipation system for the proton exchange membrane fuel cell, which has scientific principle, reliable performance, real-time adjustable heat dissipation speed and good heat dissipation effect.
In order to solve the technical problems, the utility model adopts the following technical scheme: an intelligent heat dissipation system for a proton exchange membrane fuel cell, which comprises a controller, an industrial touch display, a PLC monitoring system, a radiator, a heater, a circulating water pump, a thermostat, a first temperature sensor, a flowmeter and a pressure sensor, wherein the first temperature sensor is arranged at the inlet and the outlet of a stack of the proton exchange membrane fuel cell, a cooling water outlet of the radiator and a cooling water inlet of the heater are respectively connected with a cooling water inlet and a cooling water outlet of the proton exchange membrane fuel cell, the cooling water inlet of the radiator and the cooling water outlet of the heater are connected through a cooling water path, the flowmeter, the pressure sensor, the circulating water pump and the thermostat are sequentially arranged on the cooling water path along the water flow direction, the cooling water outlet of the radiator is provided with a second temperature sensor, and the signal input end of the PLC monitoring system is respectively connected with the first temperature sensor, the second temperature sensor, the PLC monitoring system is connected with the first temperature sensor, the second temperature sensor, the circulating water pump and the thermostat along the water path, The heater, the flowmeter and the pressure sensor are connected, a signal output end of the PLC monitoring system is connected with a signal input end of the controller, the controller is connected with the industrial touch display, and a signal output end of the controller is respectively connected with the circulating water pump and the fan of the radiator.
An installation frame which is in a regular quadrangular pyramid cylinder shape integrally is arranged between the outlet of the fan and the windward side of the radiator, a larger port of the installation frame is adjacent to the radiator, a smaller port of the installation frame is adjacent to the fan, a plurality of semiconductor refrigeration sheets are arranged on the inner side of the installation frame, the heating surfaces of the semiconductor refrigeration sheets are connected with the installation frame, the semiconductor refrigeration sheets are assembled to form an air guide cylinder in a regular quadrangular pyramid cylinder shape, and a power supply switch of the semiconductor refrigeration sheets is connected with the controller.
A plurality of criss-cross aluminum alloy heat conduction strips are arranged between the semiconductor refrigeration sheets on the two opposite sides in the air duct.
By adopting the technical scheme, the PLC monitoring system monitors whether the parameters such as the heater power, the temperature and the temperature difference (monitored by the first temperature sensor) of the inlet and the outlet of the galvanic pile, the outlet temperature (monitored by the second temperature sensor) of the cooling water of the radiator, the flow rate of the cooling water (monitored by the flow meter) and the pressure of the cooling water (monitored by the pressure sensor) are normal or not on line, once the PLC monitoring system detects the electrification of the heater, the heating power is generated, the controller immediately starts the circulating water pump, the lowest frequency of the circulating water pump is set, and the cooling water flows at the minimum flow rate. When the PLC monitoring system monitors that any parameter such as heater power, temperature and temperature difference of an inlet and an outlet of the galvanic pile, outlet temperature of cooling water of the radiator, flow rate of the cooling water, pressure of the cooling water and the like exceeds the standard, the controller starts the fan, and the fan performs air cooling heat dissipation on the radiator through the air guide cylinder, so that the heat dissipation efficiency of the radiator is improved. When the parameters seriously exceed the standard, the controller starts a power supply switch of the semiconductor refrigeration piece, simultaneously improves the rotating speed of the fan, the refrigeration surface of the semiconductor refrigeration piece refrigerates the air in the air duct, heat exchange is carried out on the heat dissipation air through the aluminum alloy heat conduction strip, and high-speed cold air is blown to the surface of the radiator, so that the heat dissipation efficiency of the radiator is further improved, the cooling water which is subjected to heat exchange by the radiator is reduced to a proper temperature and enters the interior of the proton exchange membrane fuel cell, and the proton exchange membrane fuel cell is ensured to work under a normal temperature environment.
The heater adopts a resistance type heating pipe for simulating the heat generation process of a fuel cell stack by the proton exchange membrane fuel cell, and the heating power of the resistance type heating pipe can be adjusted by the three-phase voltage regulator, so that the heat generation quantity is controlled.
The radiator adopts a finned heat exchanger, and the direct current speed regulator adopts a PWM (pulse width modulation) technology to regulate the voltage of the fan, so that the control of the rotating speed of the fan is realized.
The circulating water pump adopts a stainless steel horizontal centrifugal pump, and the frequency of a water pump motor is controlled by a three-phase frequency converter to adjust the voltage value of the circulating water pump, so that the continuous stepless adjustment of the cooling water flow is realized.
The thermostat is a device capable of controlling the flow path of circulating cooling water and realizing automatic temperature regulation. The thermostat is a wax thermostat, has three valve ports and can form a flow path with one inlet and two outlets or two inlets and one outlet, and a temperature sensing element in the thermostat expands with heat and contracts with cold along with the temperature change of cooling water to open and close the valve so as to control the flow path of the cooling water. The thermostat automatically adjusts the flow of cooling water entering the radiator according to the temperature of the cooling water entering the thermostat within the temperature adjusting range based on the temperature adjusting characteristic of the thermostat, so that the heat dissipation efficiency and the heat dissipation effect of the radiator are improved, the proton exchange membrane fuel cell works at a proper temperature, and the good output performance of the proton exchange membrane fuel cell is ensured.
The utility model sets a regular rectangular pyramid cylinder-shaped air duct between the fan and the radiator, one fan can cover the fins of the radiator completely, the air duct is formed by surrounding semiconductor refrigeration sheets, the refrigeration surface reduces the air temperature in the air duct when the semiconductor refrigeration sheets work, the heating surface outwards radiates heat, meanwhile, a plurality of criss-cross aluminum alloy heat conducting strips are arranged between the semiconductor refrigeration sheets on two opposite sides in the air duct, which improves the heat exchange efficiency with the air passing through the air in the air duct and improves the air cooling effect to the radiator, in addition, the aluminum alloy heat conducting strips also have the function of supporting the connection strength between the semiconductor refrigeration sheets and the mounting frame, and ensure the reliability of the mounting of the supporting semiconductor sheets.
In conclusion, the principle of the utility model is scientific, the design is novel, all parameters of the cooling water path of the proton exchange membrane fuel cell are monitored on line in real time, the circulating water pump and the fan are started in time, the air temperature of the cooling radiator is reduced to improve the heat dissipation efficiency, and the proton exchange membrane fuel cell is ensured to work at the proper environment temperature.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural view between the heat sink and the fan in fig. 1.
Detailed Description
As shown in fig. 1 and fig. 2, the intelligent heat dissipation system for a pem fuel cell of the present invention comprises a controller 1, an industrial touch display 2, a PLC monitoring system 3, a heat sink 4, a heater 5, a circulating water pump 6, a thermostat 7, a first temperature sensor 8, a flow meter 9 and a pressure sensor 10, wherein the first temperature sensor 8 is disposed at an inlet and an outlet of a stack of the pem fuel cell 11, a cooling water outlet of the heat sink 4 and a cooling water inlet of the heater 5 are respectively connected to the cooling water inlet and the cooling water outlet of the pem fuel cell 11, the cooling water inlet of the heat sink 4 and the cooling water outlet of the heater 5 are connected by a cooling water path 12, the flow meter 9, the pressure sensor 10, the circulating water pump 6 and the thermostat 7 are sequentially disposed on the cooling water path 12 along a water flow direction, the cooling water outlet of the heat sink 4 is provided with a second temperature sensor 13, the signal input end of the PLC monitoring system 3 is respectively connected with the first temperature sensor 8, the second temperature sensor 13, the heater 5, the flowmeter 9 and the pressure sensor 10, the signal output end of the PLC monitoring system 3 is connected with the signal input end of the controller 1, the controller 1 is connected with the industrial touch display 2, and the signal output end of the controller 1 is respectively connected with the circulating water pump 6 and the fan 15 of the radiator 4.
An installation frame 14 which is in a regular quadrangular pyramid cylinder shape integrally is arranged between an outlet of the fan 15 and a windward side of the radiator 4, a larger port of the installation frame 14 is adjacent to the radiator 4, a smaller port of the installation frame 14 is adjacent to the fan 15, a plurality of semiconductor refrigeration sheets 16 are arranged on the inner side of the installation frame 14, a heating surface of each semiconductor refrigeration sheet 16 is connected with the installation frame 14, the semiconductor refrigeration sheets 16 are assembled to form an air guide cylinder in a regular quadrangular pyramid cylinder shape, and a power supply switch of each semiconductor refrigeration sheet 16 is connected with the controller 1.
A plurality of criss-cross aluminum alloy heat conducting strips 17 are arranged between the semiconductor refrigeration sheets 16 on the two opposite sides in the air duct.
PLC monitored control system 3 on-line monitoring heater 5 power, galvanic pile exit temperature and difference in temperature (monitoring of first temperature sensor 8), radiator 4 cooling water outlet temperature (monitoring of second temperature sensor 13), whether cooling water flow (monitoring of flowmeter 9) and cooling water pressure (monitoring of pressure sensor 10) isoparametric are normal, in case PLC monitored control system 3 detects heater 5 circular telegram, heating power appears, controller 1 starts circulating water pump 6 immediately, set for circulating water pump 6 with the minimum frequency that allows, the cooling water flows with minimum flow. When the PLC monitoring system 3 monitors that any one parameter of the power of the heater 5, the inlet and outlet temperature and the temperature difference of the galvanic pile, the outlet temperature of cooling water of the radiator 4, the flow rate of the cooling water, the pressure of the cooling water and the like exceeds the standard, the controller 1 starts the fan 15, and the fan 15 carries out air cooling heat dissipation on the radiator 4 through the air duct, so that the heat dissipation efficiency of the radiator 4 is improved. When the parameters seriously exceed the standard, the controller 1 starts a power supply switch of the semiconductor refrigeration sheet 16, simultaneously increases the rotating speed of the fan 15, the refrigeration surface of the semiconductor refrigeration sheet 16 refrigerates the air in the air duct, heat exchange is carried out on the heat dissipation air through the aluminum alloy heat conduction strip 17, and high-speed cold air is blown to the surface of the radiator 4, so that the heat dissipation efficiency of the radiator 4 is further improved, the cooling water which is subjected to heat exchange by the radiator 4 is reduced to a proper temperature and enters the proton exchange membrane fuel cell 11, and the proton exchange membrane fuel cell 11 is ensured to work under a normal temperature environment.
The heater 5 selects a resistance type heating pipe for the proton exchange membrane fuel cell 11 to simulate the heat generation process of a fuel cell stack, and the heating power of the resistance type heating pipe can be adjusted through a three-phase voltage regulator, so that the heat generation quantity is controlled.
The radiator 4 adopts a finned heat exchanger, and the direct current speed regulator adopts a PWM (pulse width modulation) technology to regulate the voltage of the fan 15, so that the control of the rotating speed of the fan 15 is realized.
The circulating water pump 6 is a stainless steel horizontal centrifugal pump, and the frequency of a water pump motor is controlled through a three-phase frequency converter to adjust the voltage value of the circulating water pump 6, so that the continuous stepless adjustment of the cooling water flow is realized.
The thermostat 7 is a device that can control the flow path of the circulating cooling water to realize automatic temperature adjustment. The thermostat 7 adopts a wax thermostat 7, has three valve ports and can form a flow path with one inlet and two outlets or two inlets and one outlet, and a temperature sensing element in the thermostat generates thermal expansion and cold contraction along with the temperature change of cooling water to open and close the valve so as to control the flow path of the cooling water. The thermostat 7 automatically adjusts the flow of cooling water entering the radiator 4 according to the temperature of the cooling water entering the thermostat within the temperature adjusting range based on the temperature adjusting characteristic of the thermostat, so that the heat dissipation efficiency and the effect of the radiator 4 are improved, the proton exchange membrane fuel cell 11 works at a proper temperature, and the good output performance of the proton exchange membrane fuel cell 11 is ensured.
The utility model sets a regular rectangular pyramid cylinder-shaped air duct between the fan 15 and the radiator 4, one fan 15 can cover the fins of the radiator 4, the air duct is formed by surrounding the semiconductor refrigeration sheets 16, the refrigeration surface reduces the air temperature in the air duct when the semiconductor refrigeration sheets 16 work, the heating surface radiates heat outwards, meanwhile, a plurality of criss-cross aluminum alloy heat conduction strips 17 are arranged between the semiconductor refrigeration sheets 16 on the two opposite sides in the air duct, which improves the heat exchange efficiency with the air passing through the air duct and improves the air cooling effect of the radiator 4, in addition, the aluminum alloy heat conduction strips 17 also have the function of supporting the connection strength between the semiconductor refrigeration sheets 16 and the mounting frame 14, and ensures the mounting reliability of the supporting semiconductor refrigeration sheets 16.
In the utility model, the controller 1, the industrial touch display 2, the PLC monitoring system 3, the radiator 4, the heater 5, the circulating water pump 6, the thermostat 7, the first temperature sensor 8, the flowmeter 9, the pressure sensor 10, the fan 15 and the semiconductor refrigerating sheet 16 are all in the prior art and are commercially available, and therefore, detailed structures are not repeated. In addition, the intelligent control achieved by the present invention does not require a new computer program.
The industrial touch display 2 is used for displaying numerical values of various parameters, and can set parameters such as a motor frequency value of the circulating water pump 6, a voltage value of the fan 15 of the radiator 4 and the like on line.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (3)
1. An intelligent cooling system for proton exchange membrane fuel cell, its characterized in that: the device comprises a controller, an industrial touch display, a PLC monitoring system, a radiator, a heater, a circulating water pump, a thermostat, a first temperature sensor, a flowmeter and a pressure sensor, wherein the first temperature sensor is arranged at an inlet and an outlet of a galvanic pile of a proton exchange membrane fuel cell, a cooling water outlet of the radiator and a cooling water inlet of the heater are respectively connected with a cooling water inlet and a cooling water outlet of the proton exchange membrane fuel cell, the cooling water inlet of the radiator and the cooling water outlet of the heater are connected through a cooling water path, the flowmeter, the pressure sensor, the circulating water pump and the thermostat are sequentially arranged on the cooling water path along the water flow direction, the cooling water outlet of the radiator is provided with a second temperature sensor, a signal input end of the PLC monitoring system is respectively connected with the first temperature sensor, the second temperature sensor, the heater, the flowmeter and the pressure sensor, and a signal output end of the PLC monitoring system is connected with a signal input end of the controller, the controller is connected with the industrial touch display, and the signal output end of the controller is respectively connected with the circulating water pump and the fan of the radiator.
2. The intelligent heat dissipation system for pem fuel cells of claim 1, wherein: an installation frame which is in a regular quadrangular pyramid cylinder shape integrally is arranged between the outlet of the fan and the windward side of the radiator, a larger port of the installation frame is adjacent to the radiator, a smaller port of the installation frame is adjacent to the fan, a plurality of semiconductor refrigeration sheets are arranged on the inner side of the installation frame, the heating surfaces of the semiconductor refrigeration sheets are connected with the installation frame, the semiconductor refrigeration sheets are assembled to form an air guide cylinder in a regular quadrangular pyramid cylinder shape, and a power supply switch of the semiconductor refrigeration sheets is connected with the controller.
3. The intelligent heat dissipation system for pem fuel cells of claim 2, wherein: a plurality of criss-cross aluminum alloy heat conduction strips are arranged between the semiconductor refrigeration sheets on the two opposite sides in the air duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123050664.3U CN216288536U (en) | 2021-12-07 | 2021-12-07 | Intelligent heat dissipation system for proton exchange membrane fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123050664.3U CN216288536U (en) | 2021-12-07 | 2021-12-07 | Intelligent heat dissipation system for proton exchange membrane fuel cell |
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| Publication Number | Publication Date |
|---|---|
| CN216288536U true CN216288536U (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123050664.3U Active CN216288536U (en) | 2021-12-07 | 2021-12-07 | Intelligent heat dissipation system for proton exchange membrane fuel cell |
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| CN (1) | CN216288536U (en) |
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2021
- 2021-12-07 CN CN202123050664.3U patent/CN216288536U/en active Active
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