CN103137991B - Temperature control system and temperature control method for proton exchange membrane fuel cells testing platform - Google Patents
Temperature control system and temperature control method for proton exchange membrane fuel cells testing platform Download PDFInfo
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- CN103137991B CN103137991B CN201310045918.3A CN201310045918A CN103137991B CN 103137991 B CN103137991 B CN 103137991B CN 201310045918 A CN201310045918 A CN 201310045918A CN 103137991 B CN103137991 B CN 103137991B
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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
Abstract
The invention discloses a temperature control system and a temperature control method for a proton exchange membrane fuel cells testing platform. According to the temperature control system for the proton exchange membrane fuel cells testing platform, a liquid flow controller and a thermoelectric couple are arranged in an inside and outside circulation pipeline of the fuel cells testing platform, the heat exchange amount of a plate type heat exchanger which is arranged in the temperature control system, the temperature flow, detected when a fuel cell stack operates, of inner circulation water and the temperature, detected when the fuel cell stack operates, of outer circulation temperature are reported back to a temperature flow control instrument to control the flow of the liquid flow controller on the outer water circulation pipeline, and thus the dynamic state and the steady state of running temperature of the fuel cell electric stack are controlled.
Description
Technical field
The present invention relates to a kind of fuel battery test platform, particularly relate to a kind of temperature control system and control method thereof of testing proton exchanging film fuel battery test platform.
Background technology
Current global energy is nervous, price of oil going up sky-high, and searching new forms of energy are the task of top priority as the substitute of fossil fuel.Fuel cell is considered to the forth generation generation technology after waterpower, firepower and nuclear electric power generation, and the chemical energy of Oxidizing and Reducing Agents is directly changed into electric energy by electrocatalytic reaction by it, is a kind of efficient, safety, clean, new-generation technology flexibly.Proton Exchange Membrane Fuel Cells wherein because of its have that efficiency is high, energy density is large, reaction temperature is low, noiselessness, the remarkable advantage such as pollution-free and be with a wide range of applications in terrestrial power generation station, electric motor car and compact power etc.Fuel battery inside forms primarily of proton exchange membrane, electro chemical catalyst, diffusion layer and bipolar plates.When the fuel cell is operating, the following course of reaction of its inner generation: reacting gas spreads in diffusion layer, when reacting gas arrives Catalytic Layer, in Catalytic Layer, catalyzed dose adsorbs and electrocatalytic reaction occurs; The proton that anode reaction generates is by being delivered to cathode side in proton exchange membrane, and electronics arrives negative electrode through external circuit, with oxygen molecule reaction bonded Cheng Shui, releases heat simultaneously.Electrode reaction is:
Anode (negative pole): H
2→ 2H
++ 2e
Negative electrode (positive pole): 1/2O
2+ 2H
++ 2e → H
2o
Cell reaction: H
2+ 1/2O
2→ H
2o
In a typical Proton Exchange Membrane Fuel Cells, membrane electrode is placed in the middle of the guide plate of two pieces of conductions, and two pieces of bafflers are the baffler of anode fuel and the baffler of cathode oxidant respectively.A fuel cell of such formation is called monocell, in order to increase the gross power of whole Proton Exchange Membrane Fuel Cells, needing multiple monocell to be connected into battery pack by straight folded mode, being fuel cell pile again.In fuel cell pile, can there be guiding gutter on the two sides of one piece of pole plate, and wherein one side can as the anode guide face of a membrane electrode, and another side can be used as again the cathode guide stream interface of another adjacent membranes electrode, and this pole plate is called bipolar plates.Pile is tightened together by front end-plate, end plate and pull bar.
Fuel cell pack operationally, require higher to chilling temperature, in running once the cooling water temperature entering pile can not be stable control, then by the decay caused on Performance data and cannot normally running, great impact is caused on pile itself, needs for Testing Platform temperature control system.
Chinese Patent Application No. be 200820232029.2 invention relate to a kind of Novel fuel battery cooling system, comprise fuel cell pack, water tank, cooling water pump, radiator, cooling water pump delivery port connects radiator high-end water inlet; Radiator low side delivery port connecting fuel battery is piled; The high-end exhaust outlet of radiator connects ball valve and enters water tank.The utility model has the advantages that fuel battery cooling system can make system add water rapidly, can radiating effect be improved during operation, make cooling water pump service behaviour more reliable.The response speed that shortcoming is to control radiator slowly can not the temperature of controlled cooling model water accurately, temperature fluctuation comparatively greatly, unstable properties during long-play fuel cell pack.
Chinese Patent Application No. be 201020595016.9 invention provide a kind of proton exchanging film fuel battery test platform temperature control system, comprise fuel cell pack, the plate heat exchanger be connected with fuel cell pack, cyclic water tank, circulating water pump, electromagnetically operated valve and temperature controller, electromagnetically operated valve is serially connected in the pipeline be connected between outer circulation cooling water inlet pipe road and the water inlet of the outer circulation water end (W.E.) of plate heat exchanger, the automatically controlled part of electromagnetically operated valve is electrically connected with temperature controller, be provided with thermocouple in cyclic water tank, thermocouple holding wire is electrically connected with temperature controller.The utility model compared with the prior art, has following beneficial effect: adopt electromagnetically operated valve break-make mode to regulate outer circulation cooling water flow, effectively can ensure the temperature stability in fuel cell pile motion state row process, ensure that the stable of pile output performance.Shortcoming is the discharge being controlled outer circulation side by electromagnetically operated valve, just can regulate water temperature by the switch of Controlling solenoid valve when cooling water temperature raises, and such type of cooling is unstable, can not controlled cooling model coolant-temperature gage accurately.
Humidification mode all existing defects of above patent:
1., when cooling water temperature exceedes fuel cell stack operation requirement, just can cool by start up system, the response speed of system is slow;
2., when fuel cell pack stable operation, the larger performance on fuel cell pack of cooling water temperature fluctuation has impact;
Summary of the invention
The object of the invention is for overcoming the deficiencies in the prior art, propose a kind ofly in the inner-outer circulation pipeline of fuel battery test platform, liquid flow controller and thermocouple to be installed, the heat exchange amount of the plate heat exchanger of internal system setting and when detecting fuel cell stack operation the temperature flow of Inner eycle water and the temperature feedback of outer circulation water control the flow of the liquid flow controller in outer circulation water lines to temperature flow controller, control control system and the control method of the temperature of Inner eycle water, thus control the dynamic of fuel cell pile and steady-state operating temperature.
For achieving the above object, the present invention is achieved by the following technical programs:
Proton exchanging film fuel battery test platform temperature control system of the present invention, comprise fuel cell pack, Inner eycle water section and outer circulation water section, described Inner eycle water section comprises the plate heat exchanger be connected with fuel cell pack, cyclic water tank and circulating water pump, the water inlet of fuel cell pack is connected with circulating water pump delivery port pipeline, the delivery port of fuel cell pack is connected with pipeline with the water inlet of the Inner eycle water end (W.E.) of plate heat exchanger, the delivery port of the Inner eycle water end (W.E.) of plate heat exchanger is connected with cyclic water tank with pipeline, described outer circulation water section comprises outer circulation cooling water inlet pipe road and cooling water outlet pipe road, outer circulation cooling water inlet pipe road is connected with the water inlet of the outer circulation water end (W.E.) of plate heat exchanger, outer circulation cooling water outlet pipe road is connected with the delivery port of the outer circulation water end (W.E.) of plate heat exchanger, in described, outer circulation water section comprises two flow controllers, two thermocouples and a shared temperature flow controller, the flow controller of outer circulation cooling water part and thermocouple are serially connected in the pipeline be connected between outer circulation cooling water inlet pipe road and the water inlet of the outer circulation water end (W.E.) of plate heat exchanger, in the water inlet that the flow controller of Inner eycle cooling water part and thermocouple are serially connected in Inner eycle fuel cell pack and circulating water pump delivery port pipeline, in described, the flow controller of outer circulation cooling water part and the automatically controlled part of thermocouple are electrically connected with temperature flow controller, electronic load is electrically connected with temperature flow controller.
The present invention also proposes a kind of control method of proton exchanging film fuel battery test platform temperature control system, it comprises the following steps: 1) in fuel cell pile running, the temperature of setting cyclic water tank inner cooling water is fuel cell stack operating temperature, circulating water pump makes cooling water at fuel cell pile, circulates between cyclic water tank and plate heat exchanger, the flow of liquid flow controller in setting Inner eycle, 2) thermocouple and liquid flow controller detect temperature and the flow of cyclic water tank inner cooling water constantly, and the power grade of fuel cell pack that will monitor, temperature and flow signal are transferred to temperature flow controller, temperature flow controller makes judgement according to set point to the signal that transmission comes, and according to the heat exchange amount of plate heat exchanger, between circulating water pump and fuel cell pack and outer circulation cooling water detected temperatures and flow and design temperature difference passing ratio-Integrated Derivative (proportional-integral-derivative PID) mode regulates liquid flow controller, regulate the flow of outer circulation water, 3) outer circulation water and Inner eycle water carry out heat exchange by plate heat exchanger, control the temperature of Inner eycle water tank inner cooling water.
The present invention compared with the prior art, has following beneficial effect: 1, can control the flow entering fuel cell pack recirculated water; 2, according to the heat exchange amount of plate heat exchanger, between circulating water pump and fuel cell pack and outer circulation cooling water detected temperatures and flow and design temperature difference adopt PID to control liquid flow controller in outer circulation water lines to regulate cooling water flow, effectively can ensure the temperature stability in fuel cell pile running, ensure that the stable of pile output performance.
Accompanying drawing explanation
Fig. 1 is systematic schematic diagram of the present invention;
In accompanying drawing: 1, thermocouple, 2, liquid flow controller, 3, circulating water pump, 4, cyclic water tank, 5, fuel cell pile, 6, temperature flow controller, 7, plate heat exchanger, 8, thermocouple, 9, liquid flow controller, 10, cooling water inlet pipe road, 11, cooling water outlet pipe road, 12, cooling water intake, 13, cooling water outlet, 14, electronic load.
Embodiment
Below by the invention will be further described in conjunction with the accompanying drawings and embodiments:
Systematic schematic diagram of the present invention as shown in Figure 1, comprise fuel cell pack 5, Inner eycle water section and outer circulation water section, described Inner eycle water section comprises the plate heat exchanger 7 be connected with fuel cell pack 5, cyclic water tank 4 and circulating water pump 3, the water inlet of fuel cell pack 5 is connected with circulating water pump 3 delivery port pipeline, the delivery port of fuel cell pack 5 is connected with pipeline with the water inlet of the Inner eycle water end (W.E.) of plate heat exchanger 7, the delivery port of the Inner eycle water end (W.E.) of plate heat exchanger 7 is connected with cyclic water tank 4 with pipeline, outer circulation water section comprises outer circulation cooling water inlet pipe road 10 and cooling water outlet pipe road 11, outer circulation cooling water inlet pipe road 10 is connected with the water inlet of the outer circulation water end (W.E.) of plate heat exchanger 7, outer circulation cooling water outlet pipe road 11 is connected with the delivery port of the outer circulation water end (W.E.) of plate heat exchanger 7, Inner eycle water section comprises liquid flow controller 2, thermocouple 1 and a temperature flow controller 6, outer circulation water section comprises liquid flow controller 9, thermocouple 8 and a temperature flow controller 6, liquid flow controller 9 and thermocouple 8 are serially connected in the pipeline 11 be connected between outer circulation cooling water inlet pipe road 10 and the water inlet of the outer circulation water end (W.E.) of plate heat exchanger 7, liquid flow controller 2 and thermocouple 1 are serially connected in the water inlet 12 of Inner eycle fuel cell pack with circulating water pump 3 delivery port pipeline, the liquid flow controller 2 of inner-outer circulation cooling water part, 9 and thermocouple 1, the automatically controlled part of 8 is electrically connected with temperature flow controller 6, electronic load 14 is electrically connected with temperature flow controller.
Utilize the control method that control system described above realizes, comprise the following steps: 1) in fuel cell pile running, the temperature of setting cyclic water tank inner cooling water is fuel cell pile 5 operating temperature, circulating water pump 3 makes cooling water at fuel cell pile 5, circulates between cyclic water tank 4 and plate heat exchanger 7, the flow of liquid flow controller 9 in setting Inner eycle, 2) thermocouple 8 and liquid flow controller 9 detect temperature and the flow of cyclic water tank 4 inner cooling water constantly, and the power grade of fuel cell pack that will monitor, temperature and flow signal are transferred to temperature flow controller 6, temperature flow controller 6 makes judgement according to set point to the signal that transmission comes, and according to the heat exchange amount of plate heat exchanger 7, between circulating water pump 3 and fuel cell pack 5 and outer circulation cooling water detected temperatures and flow and design temperature difference passing ratio-Integrated Derivative (proportional-integral-derivative PID) mode regulates liquid flow controller 9, regulate the flow of outer circulation water, 3) outer circulation water and Inner eycle water carry out heat exchange by plate heat exchanger 7, control the temperature of Inner eycle water tank inner cooling water.
But above-mentioned embodiment is exemplary, being to better enable those skilled in the art understand this patent, can not being interpreted as it is restriction this patent being comprised to scope; As long as according to this patent disclose any equivalent change done or the modification of spirit, all fall into the scope that this patent comprises.
Claims (2)
1. proton exchanging film fuel battery test platform temperature control system, comprise fuel cell pack, Inner eycle water section and outer circulation water section, described Inner eycle water section comprises the plate heat exchanger be connected with fuel cell pack, cyclic water tank and circulating water pump, the water inlet of fuel cell pack is connected with circulating water pump delivery port pipeline, the delivery port of fuel cell pack is connected with pipeline with the water inlet of the Inner eycle water end (W.E.) of plate heat exchanger, the delivery port of the Inner eycle water end (W.E.) of plate heat exchanger is connected with cyclic water tank with pipeline, described outer circulation water section comprises outer circulation cooling water inlet pipe road and cooling water outlet pipe road, outer circulation cooling water inlet pipe road is connected with the water inlet of the outer circulation water end (W.E.) of plate heat exchanger, outer circulation cooling water outlet pipe road is connected with the delivery port of the outer circulation water end (W.E.) of plate heat exchanger, it is characterized in that, in described, outer circulation water section comprises two flow controllers, two thermocouples and a shared temperature flow controller, the flow controller of outer circulation water section and thermocouple are serially connected in the pipeline be connected between outer circulation cooling water inlet pipe road and the water inlet of the outer circulation water end (W.E.) of plate heat exchanger, in the water inlet that the flow controller of Inner eycle water section and thermocouple are serially connected in Inner eycle fuel cell pack and circulating water pump delivery port pipeline, in described, the flow controller of outer circulation cooling water part and the automatically controlled part of thermocouple are electrically connected with temperature flow controller, electronic load is electrically connected with temperature flow controller.
2. utilize the control method that the temperature control system described in claim 1 realizes, it comprises the following steps:
1) in fuel cell pile running, the temperature of setting cyclic water tank inner cooling water is fuel cell stack operating temperature, circulating water pump makes cooling water at fuel cell pile, circulates between cyclic water tank and plate heat exchanger, the flow of liquid flow controller in setting Inner eycle;
2) thermocouple and liquid flow controller detect temperature and the flow of cyclic water tank inner cooling water constantly, and the power grade of the fuel cell pack monitored, temperature and flow signal are transferred to temperature flow controller, temperature flow controller makes judgement according to set point to the signal that transmission comes, and according to the heat exchange amount of plate heat exchanger, between circulating water pump and fuel cell pack and outer circulation cooling water detected temperatures and flow and design temperature difference passing ratio-Integrated Derivative mode regulates liquid flow controller, regulate the flow of outer circulation water;
3) outer circulation water and Inner eycle water carry out heat exchange by plate heat exchanger, control the temperature of Inner eycle water tank inner cooling water.
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| CN201310045918.3A CN103137991B (en) | 2013-02-05 | 2013-02-05 | Temperature control system and temperature control method for proton exchange membrane fuel cells testing platform |
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| CN103137991B true CN103137991B (en) | 2015-03-18 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606692B (en) * | 2013-11-29 | 2015-09-30 | 武汉理工大学 | Based on fuel battery test system temperature control equipment and the control method of PLC |
| CN104681837A (en) * | 2013-12-02 | 2015-06-03 | 陕西荣基实业有限公司 | Heat exchange system for fuel cell |
| CN105572602A (en) * | 2016-03-17 | 2016-05-11 | 上海新源动力有限公司 | Test platform for fuel cell cooling system |
| CN109428094A (en) * | 2017-08-31 | 2019-03-05 | 郑州宇通客车股份有限公司 | A kind of fuel cell system and vehicle |
| CN113991144A (en) * | 2021-10-27 | 2022-01-28 | 合肥科威尔电源系统股份有限公司 | Cooling system for fuel cell stack test system |
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| CN201838663U (en) * | 2010-11-05 | 2011-05-18 | 新源动力股份有限公司 | Temperature control system for proton exchange membrane fuel cell testing platform |
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| WO2002037587A2 (en) * | 2000-10-30 | 2002-05-10 | Ztek Corporation | A hybrid electrical power system employing fluid regulating elements for controlling various operational parameters of the system |
| CN2581229Y (en) * | 2002-11-29 | 2003-10-22 | 清华大学 | Bench testing heat managing device for vehicle fuel battery engine |
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| CN102013504A (en) * | 2010-11-05 | 2011-04-13 | 新源动力股份有限公司 | Test platform temperature control system and control method for proton exchange membrane fuel cell |
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