CN116706122B - Night energy thermal management system of stratospheric airship and application method - Google Patents
Night energy thermal management system of stratospheric airship and application method Download PDFInfo
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- CN116706122B CN116706122B CN202310423284.4A CN202310423284A CN116706122B CN 116706122 B CN116706122 B CN 116706122B CN 202310423284 A CN202310423284 A CN 202310423284A CN 116706122 B CN116706122 B CN 116706122B
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- fuel cell
- lithium ion
- ion battery
- oxyhydrogen fuel
- temperature
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000000446 fuel Substances 0.000 claims abstract description 138
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 80
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 80
- 238000010438 heat treatment Methods 0.000 claims abstract description 31
- 238000010926 purge Methods 0.000 claims abstract description 31
- 239000001301 oxygen Substances 0.000 claims abstract description 28
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 28
- 238000009413 insulation Methods 0.000 claims abstract description 21
- 238000004891 communication Methods 0.000 claims abstract description 12
- 230000001276 controlling effect Effects 0.000 claims abstract description 10
- 238000004806 packaging method and process Methods 0.000 claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 81
- 238000004321 preservation Methods 0.000 claims description 56
- 239000000110 cooling liquid Substances 0.000 claims description 37
- 238000009423 ventilation Methods 0.000 claims description 33
- 238000001816 cooling Methods 0.000 claims description 26
- 238000005485 electric heating Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 9
- 239000002826 coolant Substances 0.000 claims description 8
- 230000001172 regenerating effect Effects 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000033228 biological regulation Effects 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 3
- 238000010257 thawing Methods 0.000 abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 230000020169 heat generation Effects 0.000 description 8
- 239000001257 hydrogen Substances 0.000 description 8
- 229910052739 hydrogen Inorganic materials 0.000 description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- 230000003197 catalytic effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000007710 freezing Methods 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000005437 stratosphere Substances 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- LQOYQLDIKMDNER-UHFFFAOYSA-N VVSVLT Natural products CC(O)C(C(O)=O)NC(=O)C(CC(C)C)NC(=O)C(C(C)C)NC(=O)C(CO)NC(=O)C(NC(=O)C(N)C(C)C)C(C)C LQOYQLDIKMDNER-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 108010066069 cabin-3 Proteins 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04037—Electrical heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64B—LIGHTER-THAN AIR AIRCRAFT
- B64B1/00—Lighter-than-air aircraft
- B64B1/06—Rigid airships; Semi-rigid airships
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
-
- 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
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04225—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells during start-up
-
- 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
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04228—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells during shut-down
-
- 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
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04268—Heating of fuel cells during the start-up of the fuel cells
-
- 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
- H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
- H01M8/04302—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during start-up
-
- 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
- H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
- H01M8/04303—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during shut-down
-
- 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
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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
- H01M8/04828—Humidity; Water content
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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
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Automation & Control Theory (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a night energy thermal management system of a stratospheric airship and an application method thereof, wherein the night energy thermal management system comprises a regenerated oxyhydrogen fuel cell system and a lithium ion battery system for providing load power, and the night energy thermal management system further comprises: a heating unit for performing rapid temperature rise treatment on the regenerated hydrogen-oxygen fuel cell system; the temperature control unit is used for regulating and controlling the working temperatures of the lithium ion battery system and the regenerated oxyhydrogen fuel battery system in real time; the control unit is in communication connection with the heating unit, the temperature control unit and the purging unit; and a thermal insulation cabin for packaging the units. The invention provides a night energy thermal management system of a stratospheric airship and an application method thereof, which can enable an oxyhydrogen fuel cell to realize rapid cold start, improve the discharge efficiency of the oxyhydrogen fuel cell and a lithium ion battery, reduce the performance attenuation rate of the oxyhydrogen fuel cell after repeated freeze thawing cycles and prolong the service life of the oxyhydrogen fuel cell.
Description
Technical Field
The invention belongs to the field of heat management of stratospheric airship energy systems, and provides a stratospheric airship energy heat management system and an application method.
Background
With the rapid development of aerospace technology and the continuous deepening of informatization combat concepts, the strategic value of stratospheric airships attracts more and more national importance. The stratospheric airship is used as an important platform of an aerostat in the near space, and has the advantages of long residence time, low cost, quick response, flexible working mode and the like. In recent years, stratospheric airships have rapidly developed in the fields of meteorological environment monitoring, mapping, reconnaissance and early warning, communication relay and the like.
However, one key issue with stratospheric airship design is the thermal management of the stratospheric airship energy systems. The working height of the stratospheric airship is generally high above 18km, the minimum ambient temperature of the stratospheric airship can reach-56.5 ℃, and if proper measures are not taken, the energy system and other electronic equipment in the cabin cannot work. And secondly, a large amount of heat is released when the energy system discharges in high power in the flying process of the airship, when the temperature of the oxyhydrogen fuel cell and the lithium ion battery is higher than the normal working temperature range, the discharging efficiency of the battery can be influenced, and explosion can occur when serious, so that the flying of the airship is stopped. And the day-night temperature difference of the stratosphere is large, which also brings challenges to low-temperature cold start and low-temperature preservation of an energy system. Therefore, it is particularly necessary to design a stratospheric airship energy thermal management system and a control method which are compatible with cold start and low-temperature storage.
Disclosure of Invention
It is an object of the present invention to address at least the above problems and/or disadvantages and to provide at least the advantages described below.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a night energy thermal management system of a stratospheric airship including a regenerative hydrogen-oxygen fuel cell system and a lithium ion battery system for supplying load power, further comprising:
a heating unit for performing rapid temperature rise treatment on the regenerated hydrogen-oxygen fuel cell system;
the temperature control unit is used for regulating and controlling the working temperatures of the lithium ion battery system and the regenerated oxyhydrogen fuel battery system in real time;
the control unit is in communication connection with the heating unit, the temperature control unit and the purging unit;
a thermal insulation cabin for packaging the units;
wherein the heating unit is configured to comprise an electric heating module and a heat preservation water tank heating module which are matched with each other;
the regenerative oxyhydrogen fuel cell system includes: an oxyhydrogen fuel cell subsystem, an electrolyzed water subsystem, and a purge subsystem for dehydrating the operating oxyhydrogen fuel cell subsystem.
Preferably, the electric heating module is configured to include:
a main cooling liquid pipeline matched with the oxyhydrogen fuel cell subsystem is provided with an electromagnetic valve I for switching the passage state of the main cooling liquid pipeline;
a PTC heater disposed on the main coolant line;
the insulated water tank heating module is configured to include:
the branch pipeline I is arranged on the main cooling liquid pipeline and is in parallel connection with the electromagnetic valve I;
the heat preservation water tank is arranged on the branch pipeline I;
wherein, be provided with at PTC heater's output side with heat preservation water tank matched with water pump I, be provided with solenoid valve II at heat preservation water tank's input side.
Preferably, the temperature control unit is configured to include:
the temperature detection module is in communication connection with the control unit;
the air cooling module and the water cooling module are in communication connection with the control unit;
wherein the temperature detection module is configured to include:
the sensor I is arranged in the oxyhydrogen fuel cell subsystem and used for detecting the temperature inside the oxyhydrogen fuel cell end plate in real time;
the sensor II is arranged in the lithium ion battery system and used for detecting the temperature of the surface of the lithium ion battery in real time;
and the sensor III is arranged on the inner wall of the heat preservation cabin to detect the temperature inside the heat preservation cabin in real time.
Preferably, the water cooling module is configured to include:
a branch cooling liquid pipeline matched with the lithium ion battery system;
the radiator is arranged on the main cooling liquid pipeline and is positioned between the heat preservation water tank and the PTC heater;
the water tank and the water pump II are arranged on the branch cooling liquid pipeline and positioned on the output side of the lithium ion battery system;
the input end of the branch cooling liquid pipeline is connected to the output side of the radiator through a matched electric three-way valve I, the other output port of the electric three-way valve I is communicated with the output side of the PTC heater through an electric three-way valve II, and the other output port of the electric three-way valve II is communicated with the heat preservation water tank and the output side of the electromagnetic valve I through a matched branch pipeline II, so that the branch pipeline II and the radiator are in a parallel connection;
the output end of the branch cooling liquid pipeline and the input end of the water pump I are communicated through the matched electric three-way valve III.
Preferably, the air cooling module is configured to include:
a fan I arranged in the thermal insulation cabin and communicated with the outside through an air inlet pipe;
the fan II is arranged in the thermal insulation cabin and is matched with the ventilation valve I, the ventilation valve II and the ventilation valve III arranged on the side wall of the thermal insulation cabin to finish the regulation of the temperature in the thermal insulation cabin;
an air supply pipeline I matched with the output side of the fan I for conveying cooling air to the position of the lithium ion battery system;
the air supply pipeline II is further arranged on the exhaust pipeline and communicated with the inside of the heat preservation cabin, and the passage states of the air supply pipeline II and the air supply pipeline II are switched through the solenoid valve III and the solenoid valve IV which are matched.
Preferably, an internal resistance monitoring instrument for monitoring the internal resistance of the oxyhydrogen fuel cell is arranged in the purging subsystem.
A method of application of a night energy thermal management system for stratospheric airships, comprising:
the method comprises the following steps that firstly, before sunset, a control unit preheats a lithium ion battery in a lithium ion battery system by controlling working states of an electric heating module and a water cooling module so as to enable the lithium ion battery to be quickly heated to a normal working temperature;
step two, after sunset and after the lithium ion battery reaches the normal working temperature, starting the lithium ion battery through a control unit, carrying out combined temperature rise on the oxyhydrogen fuel cell subsystem through an electric heating module and a heat preservation water tank heating module, and starting the oxyhydrogen fuel cell through a constant voltage starting mode after the oxyhydrogen fuel cell in the oxyhydrogen fuel cell subsystem reaches the limit cold starting temperature;
step three, when the oxyhydrogen fuel cell reaches the normal working temperature, switching the working state of the electric heating module, and detecting the current working temperatures of the oxyhydrogen fuel cell and the lithium ion battery in real time through the temperature detection module so as to regulate and control the temperatures of the oxyhydrogen fuel cell and the lithium ion battery through the matched air cooling module and the water cooling module;
and fourthly, after the day out, the control unit controls the regenerated oxyhydrogen fuel cell system and the lithium ion battery system to be in a non-working state, and simultaneously controls the radiator, the PTC heater, each electric three-way valve, each electromagnetic valve, each water pump, each fan and each ventilation valve to be in a closed state.
Preferably, in the third step, the temperature regulation mode for the oxyhydrogen fuel cell includes:
when the oxyhydrogen fuel cell reaches the normal working temperature range, the PTC heater is closed;
when the oxyhydrogen fuel cell exceeds the highest critical value of the normal working temperature range, the control unit controls the working state of each electric three-way valve to enable the cooling liquid to flow into the regenerated oxyhydrogen fuel cell system through the electromagnetic valve I, the heat preservation water tank, the radiator, the PTC heater and the water pump I to complete water cooling circulation, and meanwhile controls the working state of the radiator to quickly cool through the radiator;
when the oxyhydrogen fuel cell is lower than the lowest critical value of the normal working temperature range, the control unit closes the electromagnetic valve I and the radiator, opens the electromagnetic valve II, and controls the working states of the electric three-way valves, so that the cooling liquid flows into the regenerated oxyhydrogen fuel cell system through the electromagnetic valve II, the electric three-way valve II, the PTC heater, the electric three-way valve III and the water pump I, and the heating operation is performed at the temperature of self-heating power through the oxyhydrogen fuel cell.
Preferably, in the third step, when the temperature of the heat preservation cabin is lower than the optimal working temperature interval of the lithium ion battery, the fourth electromagnetic valve IV is opened, and the heat preservation cabin is heated under the heating of the exhaust of the radiator;
when the temperature of the heat preservation cabin is higher than the optimal working temperature range of the lithium ion battery, closing the electromagnetic valve IV, opening the electromagnetic valve III, and simultaneously opening the fan II, the ventilation valve I, the ventilation valve II and the ventilation valve III;
the temperature of the thermal insulation cabin is maintained in the optimal working temperature range of the lithium ion battery by controlling the electromagnetic valve III, the electromagnetic valve IV, the fan II, the ventilation valve I, the ventilation valve II and the ventilation valve III;
when the lithium ion battery exceeds the optimal working temperature range, the fan I is started, and the lithium ion battery is rapidly cooled under the action of external cold air.
The invention at least comprises the following beneficial effects: firstly, the oxyhydrogen fuel cell of the invention utilizes the methods of heating by the heat preservation water tank, electric heating and constant voltage starting to jointly heat up the oxyhydrogen fuel cell, thereby realizing the rapid cold starting of the oxyhydrogen fuel cell.
And secondly, in practical application, the temperature of the heat preservation cabin is controlled through the heat energy exhausted by the radiator and the cold energy of the outside air of the stratosphere, so that the temperature of the heat preservation cabin is maintained in the optimal working temperature range of the lithium ion battery, the waste heat generated by the radiator and the cold energy of the outside air of the stratosphere are fully utilized, the temperature control cost of the lithium ion battery is reduced, and the system efficiency is improved.
And thirdly, in practical application, the regenerated oxyhydrogen fuel cell system is provided with the purging system, and residual moisture is prevented from repeatedly freezing and thawing cycles in the fuel cell to damage the internal structure by precisely purging the oxyhydrogen fuel cell when the oxyhydrogen fuel cell is closed, so that the performance attenuation rate of the oxyhydrogen fuel cell is reduced, the service life of the oxyhydrogen fuel cell is prolonged, and the gas amount used for purging is reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic diagram of a night energy thermal management system of a stratospheric airship of the invention;
FIG. 2 is a schematic diagram of the power supply of the airship energy system;
FIG. 3 is a schematic diagram showing the evolution of total heat generation power, net heat generation power, heat generation power of each heat source and the contribution ratio of each heat source to the temperature rise of the hydrogen-oxygen fuel cell over time during cold start of the hydrogen-oxygen fuel cell in different cold start modes;
FIG. 4 is a schematic diagram showing the evolution of the internal resistance of the hydrogen-oxygen fuel cell with purge time during the purge process;
FIG. 5 is a graph showing the performance of hydrogen-oxygen fuel cells after 20 cycles of freeze thawing cycles (25-20 ℃ C.) after purging the hydrogen-oxygen fuel cells to different levels;
the regenerative hydrogen-oxygen fuel cell system comprises a regenerated hydrogen-oxygen fuel cell system-1, a lithium ion battery system-2, a heat preservation cabin-3, a main cooling liquid pipeline-4, an electromagnetic valve I-5, a PTC heater-6, a branch pipeline I-7, a heat preservation water tank-8, a water pump I-9, an electromagnetic valve II-10, a branch cooling liquid pipeline-11, a radiator-12, a water tank-13, a water pump II-14, an electric three-way valve I-15, an electric three-way valve II-16, a branch pipeline II-17, an electric three-way valve III-18, a fan I-19, a ventilation valve I-20, a ventilation valve II-21, a ventilation valve III-22, a fan II-23, an air supply pipeline I-24, an exhaust pipeline-25, an air supply pipeline II-26, an electromagnetic valve III-27 and an electromagnetic valve IV-28.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "engaged/connected," "connected," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, may be a detachable connection, or may be an integral connection, may be a mechanical connection, may be an electrical connection, may be a direct connection, may be an indirect connection via an intermediary, may be a communication between two elements, and for one of ordinary skill in the art, the specific meaning of the terms in the present invention may be understood according to circumstances.
As shown in fig. 2, the power supply of the airship energy system includes a solar cell array, an MPPT, an energy management system, a temperature control system, a lithium ion battery system, a standby energy source, a regenerated oxyhydrogen fuel cell system and a load. In the daytime illumination period, the required power is provided by solar energy, and the lithium ion battery and the standby energy source are charged in a power-rich state, and the energy is provided for the electrolysis of the regenerated oxyhydrogen fuel cell system to produce hydrogen and oxygen. After sunset, the platform and payload are powered by lithium ion and hydrogen oxygen fuel cells.
As shown in fig. 1, the night energy thermal management system of the stratospheric airship of the present invention includes a regenerative oxyhydrogen fuel cell system 1 and a lithium ion battery system 2 for providing load power, and further includes:
a heating unit for performing rapid temperature rise treatment on the regenerated hydrogen-oxygen fuel cell system;
the temperature control unit is used for regulating and controlling the working temperatures of the lithium ion battery system and the regenerated oxyhydrogen fuel battery system in real time;
a control unit (not shown) in communication with the heating unit, the temperature control unit, and the purge unit, the control unit controlling the regenerated hydrogen oxygen fuel cell system, the lithium ion battery system, the electromagnetic valve, the radiator, the three-way valve, the PTC heater, and the fan according to temperature signals of the hydrogen oxygen fuel cell and the lithium ion battery;
a thermal insulation cabin 3 for packaging the units;
wherein the heating unit is configured to comprise an electric heating module and a heat preservation water tank heating module which are matched with each other;
the regenerative oxyhydrogen fuel cell system includes: the hydrogen-oxygen fuel cell system comprises a hydrogen-oxygen fuel cell subsystem, an electrolytic water subsystem and a purging subsystem for dehydrating the hydrogen-oxygen fuel cell subsystem after working, wherein an internal resistance monitoring instrument is arranged in the purging subsystem, so that the internal resistance of the hydrogen-oxygen fuel cell can be monitored. The hydrogen and oxygen are consumed by the oxyhydrogen fuel cell after sunset to provide energy for the airship, the hydrogen and oxygen are accurately purged when the oxyhydrogen fuel cell is closed through the purging subsystem, residual moisture is prevented from repeatedly freezing and thawing in the fuel cell to damage the internal structure of the oxyhydrogen fuel cell, the performance attenuation rate of the oxyhydrogen fuel cell is reduced, the service life of the oxyhydrogen fuel cell is prolonged, and the gas amount used for purging is reduced.
The electrical heating module is configured to include:
a main coolant pipeline 4 matched with the oxyhydrogen fuel cell subsystem is provided with a solenoid valve I5 for switching the passage state of the main coolant pipeline;
a PTC heater 6 disposed on the main coolant line;
the insulated water tank heating module is configured to include:
the branch pipeline I7 is arranged on the main cooling liquid pipeline and is in parallel connection with the electromagnetic valve I;
a heat preservation water tank 8 arranged on the branch pipeline;
wherein, be provided with heat preservation water tank matched with water pump I9 in PTC heater's output side, heat preservation water tank's input side is provided with solenoid valve II 10.
The temperature control unit is configured to include:
the temperature detection module is in communication connection with the control unit;
the air cooling module and the water cooling module are in communication connection with the control unit;
wherein the temperature detection module is configured to include:
a sensor I (not shown) provided in the oxyhydrogen fuel cell subsystem to detect the temperature inside the oxyhydrogen fuel cell end plate in real time;
a sensor ii (not shown) provided in the lithium ion battery system to detect the temperature of the surface of the lithium ion battery in real time.
The water cooling module is configured to include:
a branch coolant pipe 11 matched with the lithium ion battery system;
a radiator 12 disposed on the main coolant line and between the heat preservation water tank and the PTC heater;
the water tank 13 and the water pump II 14 are arranged on the branch cooling liquid pipeline and are positioned on the output side of the lithium ion battery system;
the input end of the branch cooling liquid pipeline is connected to the output side of the radiator through a matched electric three-way valve I15, the other output port of the electric three-way valve I is communicated with the output side of the PTC heater through an electric three-way valve II 16, and the other output port of the electric three-way valve II is communicated with the heat preservation water tank and the output side of the electromagnetic valve I through a matched branch pipeline II 17, so that the branch pipeline II and the radiator are in a parallel connection shape;
the output end of the branch cooling liquid pipeline and the input end of the water pump I are communicated through the matched electric three-way valve III 18.
The air cooling module is configured to include:
a blower I19 arranged inside the thermal insulation cabin and communicated with the outside through an air inlet pipe;
the fan II 23 is arranged in the thermal insulation cabin and is matched with the ventilation valve I20, the ventilation valve II 21 and the ventilation valve III 22 arranged on the side wall of the thermal insulation cabin to finish the regulation of the temperature in the thermal insulation cabin;
and an air supply pipeline I24 matched with the output side of the fan I for conveying cooling air to the position of the lithium ion battery system. In the specific application, in the night energy thermal management system of the stratospheric airship, an electromagnetic valve II, a heat preservation water tank, a radiator, an electric three-way valve I, an electric three-way valve II, a PTC heater, an electric three-way valve III and a water pump I are connected in series with a regenerated oxyhydrogen fuel cell system through a main cooling liquid pipeline;
the electromagnetic valve I is connected with the electromagnetic valve II and the heat preservation water tank in parallel through a main cooling liquid pipeline;
the inlet end of the radiator and the outlet end of the electric three-way valve I are provided with bypasses, and the bypass outlet is an electric three-way valve II.
The water tank and the water pump II are arranged on the branch cooling liquid pipeline, are arranged at the cooling liquid outlet end (or called as output end and output side) of the lithium ion battery system, are connected with the lithium ion battery system in series through the main cooling liquid pipeline, and the cooling liquid inlet end (or called as input end and input side) of the lithium ion battery system and the cooling liquid outlet end of the water pump II are respectively connected with the electric three-way valve I and the electric three-way valve III.
The heat preservation cabin is installed in the whole system outside, fan I installs in heat preservation cabin inner wall, and fan I carries outside cold air to lithium ion battery system inside through air supply pipeline I, and fan II installs in heat preservation cabin inner wall, and the output of radiator 5 is provided with the exhaust pipe 25 with the outside intercommunication of heat preservation cabin simultaneously, still be provided with on the exhaust pipe I with the inside air supply pipeline II 26 of intercommunication of heat preservation cabin, be provided with matched with solenoid valve III 27, solenoid valve IV 28 on exhaust pipe, the air supply pipeline II respectively, fan II carries out the heat exchange with outside with heat preservation cabin inside air through air supply pipeline II, solenoid valve III, carries out the heat exchange with the inside air of radiator and the space in the heat preservation cabin through exhaust pipe, solenoid valve IV, cooperates corresponding electronic three-way valve open state control simultaneously to reach the purpose of control heat preservation cabin temperature. In practical application, the lithium ion battery adopts a cooling mode of combining liquid cooling and air cooling.
The invention aims to solve the problems of low-temperature cold start, temperature control and low-temperature preservation of an energy system of a stratospheric airship (provided with a regenerated oxyhydrogen fuel cell system and a lithium ion battery system). By utilizing the system and the control method thereof, the oxyhydrogen fuel cell can realize quick cold start, the discharge efficiency of the oxyhydrogen fuel cell and the lithium ion battery is improved, the performance attenuation rate of the oxyhydrogen fuel cell after repeated freeze thawing cycle is reduced, and the service life of the oxyhydrogen fuel cell is prolonged. Specifically, by using the thermal management system, the control is performed according to the following steps:
and firstly, at the time T before sunset (the time T is the time when the lithium ion battery is heated to the normal working temperature, and the sunset time can be determined according to the flying place and time of the airship), the control unit controls the electric three-way valve I, the electric three-way valve II and the electric three-way valve III to enable cooling liquid to sequentially pass through the water tank, the water pump II, the electric three-way valve III, the PTC heater, the electric three-way valve II, the electric three-way valve I and the lithium ion battery system. Meanwhile, the water pump II and the PTC heater are started, so that the lithium ion battery is quickly heated to the normal working temperature. In the preheating stage of the lithium ion battery, the power of the PTC heater is derived from solar energy.
And step two, after sunset, the lithium ion battery reaches the normal working temperature and is started, and at the moment, the lithium ion battery supplies power to the stratospheric airship platform and the effective load. And then, the water pump II is closed, and the control unit controls the electric three-way valve I, the electric three-way valve II and the electric three-way valve III to enable the cooling liquid to sequentially pass through the electromagnetic valve II, the heat preservation water tank, the electric three-way valve II, the PTC heater, the electric three-way valve III, the water pump I and the regenerated oxyhydrogen fuel cell system. Meanwhile, the water pump I is started, the PTC heater energy supply mode is changed, and the solar energy supply is switched to the lithium ion battery energy supply mode. The oxyhydrogen fuel cell is heated up rapidly under the common heating of the high-temperature water (high-temperature circulating coolant in the last working) of the heat preservation water tank and the PTC heater. When the hydrogen-oxygen fuel cell reaches the ultimate cold start temperature, the hydrogen-oxygen fuel cell is started in a constant voltage start mode. In this scheme, compared with a constant-current and constant-power starting mode, a constant-voltage starting mode is adopted, so that more heat can be released, the oxyhydrogen fuel cell can be heated up quickly to reach a normal working temperature, specifically, fig. 3 is a evolution rule of total heat generation power, net heat generation power, heat generation power of each heat source and contribution ratio of each heat source to battery temperature rise over time in the cold starting process (-20 ℃) of the oxyhydrogen fuel cell under different cold starting modes (the cold starting power is consistent).
As can be seen from fig. 3, the total heat and net heat generation power in the constant voltage start mode is highest among the three cold start modes. The total and net heat production in the constant power start-up mode is the lowest of the three modes. The total and net heat production in the constant current mode is between the constant voltage and constant power modes. The heat generation is inversely proportional to the battery output voltage, while the battery efficiency is directly proportional to the battery output voltage, i.e., during cold start, more energy is converted to waste heat in the constant voltage mode to heat the battery itself, while the efficiency of the battery is highest and the waste heat generated is minimal in the constant power mode. Therefore, the hydrogen-oxygen fuel cell can be quickly heated to the normal working temperature in a starting mode by utilizing constant voltage.
And step three, closing the PTC heater when the oxyhydrogen fuel cell reaches the normal working temperature. When the oxyhydrogen fuel cell exceeds the normal working temperature range, the control unit controls the electric three-way valve I, the electric three-way valve II and the electric three-way valve III to enable the cooling liquid to sequentially pass through the electromagnetic valve I, the heat preservation water tank, the radiator, the electric three-way valve I, the electric three-way valve II, the PTC heater, the electric three-way valve III, the water pump I and the regenerated oxyhydrogen fuel cell system. Simultaneously, the radiator is started, and the oxyhydrogen fuel cell is rapidly cooled under the action of the radiator.
When the oxyhydrogen fuel cell is lower than the normal working temperature range, the electromagnetic valve I and the radiator are closed, the electromagnetic valve II is opened, and meanwhile, the control unit controls the electric three-way valve I, the electric three-way valve II and the electric three-way valve III to enable cooling liquid to sequentially pass through the electromagnetic valve II, the electric three-way valve II, the PTC heater, the electric three-way valve III, the water pump I and the regenerated oxyhydrogen fuel cell system. The oxyhydrogen fuel cell is heated by self-heating power to rapidly raise the temperature.
When the temperature of the heat preservation cabin is lower than the optimal working temperature range of the lithium ion battery, the fourth electromagnetic valve IV is opened, and the temperature of the heat preservation cabin is raised under the heating of the exhaust of the radiator. When the temperature of the heat preservation cabin is higher than the optimal working temperature range of the lithium ion battery, the electromagnetic valve IV is closed, the electromagnetic valve III is opened, and the fan II, the ventilation valve I, the ventilation valve II and the ventilation valve III are simultaneously opened. The temperature of the thermal insulation cabin is maintained in the optimal working temperature range of the lithium ion battery by controlling the electromagnetic valve III, the electromagnetic valve IV, the fan II, the ventilation valve I, the ventilation valve II and the ventilation valve III.
When the lithium ion battery exceeds the optimal working temperature range, the fan I is started, and the lithium ion battery is rapidly cooled under the action of external cold air.
And fourthly, after the day out, stopping power supply of the regenerated oxyhydrogen fuel cell system and the lithium ion battery system, closing the oxyhydrogen fuel cell and the lithium ion battery, and closing the radiator, the PTC heater, all the three-way valves, the electromagnetic valve, the water pump, the fan and the ventilation valve. The airship is powered by solar energy and other backup energy sources. And starting a purging system to purge the oxyhydrogen fuel cell. The purpose is to remove the moisture in the oxyhydrogen fuel cell and prevent the residual moisture from repeatedly freezing and thawing in the oxyhydrogen fuel cell to destroy the internal structure. The method comprises the following specific steps: after the oxyhydrogen fuel cell is closed, the temperature of the oxyhydrogen fuel cell is still higher, the efficiency of purging and dewatering is high, the anode and the cathode are purged by dry hydrogen and dry oxygen respectively, the purging flow is twice of the hydrogen and oxygen required by the rated power point of the oxyhydrogen fuel cell, and meanwhile, an internal resistance detection instrument is opened to detect the internal resistance of the oxyhydrogen fuel cell during purging. As the internal resistance of the oxyhydrogen fuel cell increases with the removal of moisture from the interior of the oxyhydrogen fuel cell, fig. 4 shows the change of the internal resistance with time during the purging of the oxyhydrogen fuel cell, so that the moisture removal process from the interior of the cell is generally divided into three stages as can be seen from fig. 4. The internal resistance of the battery corresponding to the end of the second stage is R, and the moisture in the catalytic layer is basically removed.
When the internal resistance reaches R (R is the internal resistance when the moisture in the catalytic layer of the oxyhydrogen fuel cell is purged), the purging is stopped after the purging is continued for 3 minutes, and the air inlets and the air outlets of the anode and the cathode of the oxyhydrogen fuel cell are closed. When the internal resistance reaches R, the voltage of the oxyhydrogen fuel cell does not have obvious attenuation after the freeze thawing cycle, and the performance of the oxyhydrogen fuel cell is compared after 20 cycles of freeze thawing cycle (25 to minus 20 ℃) after the oxyhydrogen fuel cell is purged to different degrees shown in figure 5. FIG. 5 (A) shows a comparison of the performance of a cell without a purge operation before and after 20 freeze-thaw cycles; FIG. 5 (B) shows a comparison of the performance of a cell purged to the end of the first stage before and after 20 freeze-thaw cycles; fig. 5 (C) shows a comparison of the performance of the cell purged to the end of the second stage (at which time the internal resistance is R) before and after 20 freeze-thaw cycles. As can be seen from fig. 5, the battery performance was attenuated to a different extent at smaller currents, either without purging or with purging the battery to the end of the first phase, whereas the battery performance was hardly attenuated with purging the battery to R (end of the second phase). Therefore, when the oxyhydrogen fuel cell is stored at a low temperature, at least the internal resistance of the cell should be purged to R.
Therefore, after the oxyhydrogen fuel cell is closed, the internal resistance of the oxyhydrogen fuel cell is purged to R, so that the performance attenuation rate of the oxyhydrogen fuel cell can be obviously reduced, and the service life of the oxyhydrogen fuel cell is prolonged. At the same time, in order to prevent excessive moisture in the membrane from diffusing to the catalytic layer during preservation, when the internal resistance reaches R, purging is continued for 3 minutes, and the purpose of this operation is to remove a part of the moisture in the membrane, to make the membrane in an unsaturated state, and to avoid the diffusion of the moisture to the catalytic layer as much as possible.
The above is merely illustrative of a preferred embodiment, but is not limited thereto. In practicing the present invention, appropriate substitutions and/or modifications may be made according to the needs of the user.
The number of equipment and the scale of processing described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be readily apparent to those skilled in the art.
Although embodiments of the invention have been disclosed above, they are not limited to the use listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. Therefore, the invention is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (8)
1. A night energy thermal management system for stratospheric airships comprising a regenerative hydrogen-oxygen fuel cell system and a lithium ion battery system for providing load power, further comprising:
a heating unit for performing rapid temperature rise treatment on the regenerated hydrogen-oxygen fuel cell system;
the temperature control unit is used for regulating and controlling the working temperatures of the lithium ion battery system and the regenerated oxyhydrogen fuel battery system in real time;
the control unit is in communication connection with the heating unit, the temperature control unit and the purging unit;
a thermal insulation cabin for packaging the units;
wherein the heating unit is configured to comprise an electric heating module and a heat preservation water tank heating module which are matched with each other;
the regenerative oxyhydrogen fuel cell system includes: an oxyhydrogen fuel cell subsystem, an electrolytic water subsystem and a purging subsystem for dehydrating the operating oxyhydrogen fuel cell subsystem;
the electrical heating module is configured to include:
a main cooling liquid pipeline matched with the oxyhydrogen fuel cell subsystem is provided with an electromagnetic valve I for switching the passage state of the main cooling liquid pipeline;
a PTC heater disposed on the main coolant line;
the insulated water tank heating module is configured to include:
the branch pipeline I is arranged on the main cooling liquid pipeline and is in parallel connection with the electromagnetic valve I;
the heat preservation water tank is arranged on the branch pipeline I;
wherein, be provided with at PTC heater's output side with heat preservation water tank matched with water pump I, be provided with solenoid valve II at heat preservation water tank's input side.
2. The stratospheric airship night energy thermal management system of claim 1, wherein the temperature control unit is configured to include:
the temperature detection module is in communication connection with the control unit;
the air cooling module and the water cooling module are in communication connection with the control unit;
wherein the temperature detection module is configured to include:
the sensor I is arranged in the oxyhydrogen fuel cell subsystem and used for detecting the temperature inside the oxyhydrogen fuel cell end plate in real time;
the sensor II is arranged in the lithium ion battery system and used for detecting the temperature of the surface of the lithium ion battery in real time;
and the sensor III is arranged on the inner wall of the heat preservation cabin to detect the temperature inside the heat preservation cabin in real time.
3. The night energy thermal management system of a stratospheric airship of claim 2, wherein the water-cooling module is configured to include:
a branch cooling liquid pipeline matched with the lithium ion battery system;
the radiator is arranged on the main cooling liquid pipeline and is positioned between the heat preservation water tank and the PTC heater;
the water tank and the water pump II are arranged on the branch cooling liquid pipeline and positioned on the output side of the lithium ion battery system;
the input end of the branch cooling liquid pipeline is connected to the output side of the radiator through a matched electric three-way valve I, the other output port of the electric three-way valve I is communicated with the output side of the PTC heater through an electric three-way valve II, and the other output port of the electric three-way valve II is communicated with the heat preservation water tank and the output side of the electromagnetic valve I through a matched branch pipeline II, so that the branch pipeline II and the radiator are in a parallel connection;
the output end of the branch cooling liquid pipeline and the input end of the water pump I are communicated through the matched electric three-way valve III.
4. The night energy thermal management system of a stratospheric airship of claim 2, wherein the air-cooling module is configured to include:
a fan I arranged in the thermal insulation cabin and communicated with the outside through an air inlet pipe;
the fan II is arranged in the thermal insulation cabin and is matched with the ventilation valve I, the ventilation valve II and the ventilation valve III arranged on the side wall of the thermal insulation cabin to finish the regulation of the temperature in the thermal insulation cabin;
an air supply pipeline I matched with the output side of the fan I for conveying cooling air to the position of the lithium ion battery system;
the air supply pipeline II is further arranged on the exhaust pipeline and communicated with the inside of the heat preservation cabin, and the passage states of the air supply pipeline II and the air supply pipeline II are switched through the solenoid valve III and the solenoid valve IV which are matched.
5. The night energy thermal management system of the stratospheric airship of claim 1, wherein an internal resistance monitoring instrument for monitoring the internal resistance of the oxyhydrogen fuel cell is arranged in the purging subsystem.
6. A method of using the night energy thermal management system of a stratospheric airship of any one of claims 1-5, comprising:
the method comprises the following steps that firstly, before sunset, a control unit preheats a lithium ion battery in a lithium ion battery system by controlling working states of an electric heating module and a water cooling module so as to enable the lithium ion battery to be quickly heated to a normal working temperature;
step two, after sunset and after the lithium ion battery reaches the normal working temperature, starting the lithium ion battery through a control unit, carrying out combined temperature rise on the oxyhydrogen fuel cell subsystem through an electric heating module and a heat preservation water tank heating module, and starting the oxyhydrogen fuel cell through a constant voltage starting mode after the oxyhydrogen fuel cell in the oxyhydrogen fuel cell subsystem reaches the limit cold starting temperature;
step three, when the oxyhydrogen fuel cell reaches the normal working temperature, switching the working state of the electric heating module, and detecting the current working temperatures of the oxyhydrogen fuel cell and the lithium ion battery in real time through the temperature detection module so as to regulate and control the temperatures of the oxyhydrogen fuel cell and the lithium ion battery through the matched air cooling module and the water cooling module;
and fourthly, after the day out, the control unit controls the regenerated oxyhydrogen fuel cell system and the lithium ion battery system to be in a non-working state, and simultaneously controls the radiator, the PTC heater, each electric three-way valve, each electromagnetic valve, each water pump, each fan and each ventilation valve to be in a closed state.
7. The method for applying the night energy thermal management system of the stratospheric airship of claim 6, wherein in the third step, the temperature regulation mode of the oxyhydrogen fuel cell comprises:
when the oxyhydrogen fuel cell reaches the normal working temperature range, the PTC heater is closed;
when the oxyhydrogen fuel cell exceeds the highest critical value of the normal working temperature range, the control unit controls the working state of each electric three-way valve to enable the cooling liquid to flow into the regenerated oxyhydrogen fuel cell system through the electromagnetic valve I, the heat preservation water tank, the radiator, the PTC heater and the water pump I to complete water cooling circulation, and meanwhile controls the working state of the radiator to quickly cool through the radiator;
when the oxyhydrogen fuel cell is lower than the lowest critical value of the normal working temperature range, the control unit closes the electromagnetic valve I and the radiator, opens the electromagnetic valve II, and controls the working states of the electric three-way valves, so that the cooling liquid flows into the regenerated oxyhydrogen fuel cell system through the electromagnetic valve II, the electric three-way valve II, the PTC heater, the electric three-way valve III and the water pump I, and the heating operation is performed at the temperature of self-heating power through the oxyhydrogen fuel cell.
8. The method for applying the night energy thermal management system of stratospheric airship according to claim 6, wherein in the third step, when the temperature of the thermal insulation cabin is lower than the optimal working temperature range of the lithium ion battery, the fourth electromagnetic valve IV is opened, and the thermal insulation cabin is heated up under the heating of the exhaust gas of the radiator;
when the temperature of the heat preservation cabin is higher than the optimal working temperature range of the lithium ion battery, closing the electromagnetic valve IV, opening the electromagnetic valve III, and simultaneously opening the fan II, the ventilation valve I, the ventilation valve II and the ventilation valve III;
the temperature of the thermal insulation cabin is maintained in the optimal working temperature range of the lithium ion battery by controlling the electromagnetic valve III, the electromagnetic valve IV, the fan II, the ventilation valve I, the ventilation valve II and the ventilation valve III;
when the lithium ion battery exceeds the optimal working temperature range, the fan I is started, and the lithium ion battery is rapidly cooled under the action of external cold air.
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| CN107591546A (en) * | 2017-08-25 | 2018-01-16 | 北京工业大学 | A kind of fuel cell lithium battery hybrid power heat management system and the method for operation |
| CN110968129A (en) * | 2019-11-29 | 2020-04-07 | 浙江嘉杰汽车设计有限公司 | External water circulation temperature control system of fuel cell clamp |
| CN112277569A (en) * | 2020-12-04 | 2021-01-29 | 北京成功领行汽车技术有限责任公司 | Hydrogen fuel cell automobile heat management control system and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107591546A (en) * | 2017-08-25 | 2018-01-16 | 北京工业大学 | A kind of fuel cell lithium battery hybrid power heat management system and the method for operation |
| CN110968129A (en) * | 2019-11-29 | 2020-04-07 | 浙江嘉杰汽车设计有限公司 | External water circulation temperature control system of fuel cell clamp |
| CN112277569A (en) * | 2020-12-04 | 2021-01-29 | 北京成功领行汽车技术有限责任公司 | Hydrogen fuel cell automobile heat management control system and control method thereof |
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