CN113793952A - Fuel cell system and low-temperature starting control method and device thereof - Google Patents
Fuel cell system and low-temperature starting control method and device thereof Download PDFInfo
- Publication number
- CN113793952A CN113793952A CN202110925830.5A CN202110925830A CN113793952A CN 113793952 A CN113793952 A CN 113793952A CN 202110925830 A CN202110925830 A CN 202110925830A CN 113793952 A CN113793952 A CN 113793952A
- Authority
- CN
- China
- Prior art keywords
- voltage
- fuel cell
- output current
- stack
- single battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 121
- 238000000034 method Methods 0.000 title claims abstract description 45
- 230000001105 regulatory effect Effects 0.000 claims abstract description 13
- 230000002596 correlated effect Effects 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 93
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 67
- 239000001257 hydrogen Substances 0.000 claims description 67
- 229910052739 hydrogen Inorganic materials 0.000 claims description 67
- 230000008569 process Effects 0.000 claims description 20
- 230000001276 controlling effect Effects 0.000 claims description 19
- 239000000498 cooling water Substances 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000004590 computer program Methods 0.000 claims description 9
- 230000004044 response Effects 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 11
- 239000001301 oxygen Substances 0.000 description 11
- 229910052760 oxygen Inorganic materials 0.000 description 11
- 238000010248 power generation Methods 0.000 description 11
- 238000007726 management method Methods 0.000 description 8
- 238000007689 inspection Methods 0.000 description 7
- 238000009825 accumulation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012384 transportation and delivery Methods 0.000 description 1
Images
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
- H01M8/04223—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
- H01M8/04298—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
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04701—Temperature
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The invention discloses a fuel cell system, a low-temperature start control method and device thereof, electronic equipment and a storage medium. The system comprises: an electric stack comprising a plurality of unit cells; a DC/DC converter connected to the cell stack; and the controller is used for responding to a low-temperature starting instruction of the fuel cell, determining the voltage of each single battery, and regulating the output current of the DC/DC converter according to the voltage of each single battery, wherein the output current is positively correlated with the voltage of the single battery. Therefore, the output current of the DC/DC converter is regulated by the voltage of each single battery, so that the fuel cell system can be started quickly and successfully in a low-temperature environment, and the reliability of the fuel cell is improved.
Description
Technical Field
The present invention relates to the field of battery technologies, and in particular, to a fuel cell system, a low-temperature start control method and apparatus thereof, an electronic device, and a storage medium.
Background
A Proton Exchange Membrane Fuel Cell (PEMFC) is a device that directly converts chemical energy of hydrogen and oxygen into electrical energy. Fuel cells are gaining increasing attention because of their high efficiency, cleanliness, and like characteristics.
However, during operation of the fuel cell, chemical reaction of hydrogen with oxygen produces water, and in a low temperature environment, the remaining water freezes in the stack of the fuel cell. In the low-temperature starting process, the partial ice in the fuel cell stack melts to cause water logging, so that the partial reverse pole of the stack is caused, the voltage of a part of single cells in the stack is lower than a normal value, so that the cells cannot be normally started, and the reliability of the fuel cell is reduced.
Disclosure of Invention
The invention aims to overcome the defect that a fuel cell system, a low-temperature start control method and device thereof, electronic equipment and a storage medium are provided in the prior art, and the low-temperature start control method and device thereof are used for overcoming the defect that a fuel cell stack cannot be normally started due to local reverse polarity of the stack caused by water flooding caused by local ice melting in the fuel cell stack in the low-temperature start process.
The invention solves the technical problems through the following technical scheme:
in a first aspect, there is provided a fuel cell system comprising:
an electric stack comprising a plurality of unit cells;
a DC/DC converter connected to the cell stack;
and the controller is used for responding to a low-temperature starting instruction of the fuel cell, determining the voltage of each single battery, and regulating the output current of the DC/DC converter according to the voltage of each single battery, wherein the output current is positively correlated with the voltage of the single battery.
Optionally, the controller comprises:
the judging unit is used for judging whether the voltage of the single battery with the minimum voltage in each single battery is smaller than a voltage threshold value and/or whether the difference value of the voltages of the two single batteries is larger than a difference value threshold value;
the regulating unit is used for reducing the output current of the DC/DC converter under the condition that the voltage of the single battery with the minimum voltage is smaller than a voltage threshold value and/or the difference value of the voltages of two single batteries is larger than a difference value threshold value; and increasing the output current of the DC/DC converter when the voltage of the single battery with the minimum voltage is greater than a voltage threshold value and/or the difference value of the voltages of any two single batteries is less than a difference threshold value.
Optionally, the fuel cell further comprises: a heater;
the controller is also used for responding to the low-temperature starting instruction and controlling the heater to heat the electric pile.
Optionally, a water flow channel is arranged in the galvanic pile; the fuel cell system further comprises a water flow pipeline communicated with the water flow channel;
the heater is arranged on the water flow pipeline and used for heating the cooling water in the water flow pipeline so as to enable the heated cooling water to flow into the water flow channel.
Optionally, the fuel cell system further comprises a radiator and a water temperature sensor; the radiator and the water temperature sensor are arranged on the water flow pipeline; the radiator and the water temperature sensor are both connected with the controller;
the water temperature sensor is used for detecting the water temperature of the cooling water in the water flow pipeline and sending the water temperature to the controller;
the controller is used for controlling the heater to stop heating the galvanic pile under the condition that the water temperature reaches the temperature threshold value, and/or controlling the radiator to cool the cooling water in the water flow pipeline, so that the cooled cooling water flows into the water flow channel.
Optionally, a hydrogen flow channel is arranged in the electric pile; the fuel cell system also comprises a tail exhaust valve and a hydrogen pipeline communicated with the hydrogen flow channel, wherein the hydrogen pipeline is used for conveying hydrogen for the galvanic pile, and the tail exhaust valve is arranged on the hydrogen pipeline and is positioned at the output end of the hydrogen flow channel;
the controller is also used for intermittently opening the tail exhaust valve in the process that the hydrogen pipeline delivers hydrogen for the galvanic pile.
Optionally, an air flow channel is arranged in the electric pile; the fuel cell system also comprises an air compressor and an air pipeline communicated with the air flow channel;
the controller is also used for controlling the air compressor to start before the hydrogen pipeline conveys hydrogen for the electric pile, so that the air compressor conveys air to the air flow channel after pressurizing and heating the air.
In a second aspect, there is provided a low-temperature start-up control method of a fuel cell system, the fuel cell including a stack and a DC/DC converter connected to the stack; the electric stack comprises a plurality of single batteries; the control method comprises the following steps:
determining the voltage of each single battery in response to a low-temperature starting instruction of the fuel battery;
and regulating the output current of the DC/DC converter according to the voltage of each single battery, wherein the output current is positively correlated with the voltage of the single battery.
Optionally, adjusting the output current of the DC/DC converter according to the voltage of each unit cell includes:
judging whether the voltage of the single battery with the minimum voltage in each single battery is smaller than a voltage threshold value and/or whether the difference value of the voltages of the two single batteries is larger than a difference threshold value;
reducing the output current of the DC/DC converter under the condition that the voltage of the single battery with the minimum voltage is smaller than a voltage threshold and/or the difference value of the voltages of the two single batteries is larger than a difference threshold;
and increasing the output current of the DC/DC converter when the voltage of the single battery with the minimum voltage is greater than a voltage threshold value and/or the difference value of the voltages of any two single batteries is less than a difference threshold value.
Optionally, the fuel cell further comprises: a heater;
the method further comprises the following steps:
and controlling the heater to heat the electric pile in response to the low-temperature starting instruction.
In a third aspect, there is provided a low-temperature start-up control device of a fuel cell system, the fuel cell including a stack and a DC/DC converter connected to the stack; the electric stack comprises a plurality of single batteries; the control device includes:
the determining module is used for responding to a low-temperature starting instruction of the fuel cell and determining the voltage of each single battery;
and the adjusting module is used for adjusting the output current of the DC/DC converter according to the voltage of each single battery, and the output current is positively correlated with the voltage of each single battery.
In a fourth aspect, an electronic device is provided, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the method of any one of the above when executing the computer program.
In a fifth aspect, a readable storage medium is provided, on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out the steps of the method of any of the above.
The positive progress effects of the invention are as follows:
in the process of starting the fuel cell system at low temperature, the output current of the DC/DC converter is regulated by the voltage of each single cell, so that the problem of low voltage of partial single cells is avoided as much as possible, the risk of local reversal of the galvanic pile is reduced, the fuel cell system can be started quickly and successfully in the low-temperature environment, and the reliability of the fuel cell is improved.
Drawings
Fig. 1 is a schematic structural view of a fuel cell system according to an exemplary embodiment of the present invention;
fig. 2 is a flowchart of a low-temperature start control method of a fuel cell system according to an exemplary embodiment of the present invention;
fig. 3 is a block diagram schematically illustrating a low-temperature start-up control apparatus of a fuel cell system according to an exemplary embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electronic device according to an exemplary embodiment of the present invention.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
Fig. 1 is a schematic structural diagram of a fuel cell system according to an exemplary embodiment of the present invention, and referring to fig. 1, the fuel cell system includes: a stack 11, an air supply system 12, a hydrogen supply system 13, a thermal management system 14, a DC/DC converter 15, a stack inspection system (not shown), and a controller (not shown).
An air flow channel, a hydrogen flow channel and a water flow channel are arranged in the galvanic pile 11. The galvanic pile generates electricity through chemical reaction, namely, hydrogen is introduced into the hydrogen flow channel, and air is introduced into the air flow channel, so that the hydrogen and oxygen in the air generate chemical reaction in the galvanic pile, and electricity generation is realized. The electric pile 11 comprises a plurality of single batteries which are connected in series in sequence, each single battery comprises an air flow channel, a hydrogen flow channel and a water flow channel, and the air flow channel, the hydrogen flow channel and the water flow channel of each single battery are respectively communicated with each other. The electricity generated by the stack is stored in a storage battery or supplied to a load via a DC/DC converter 15 and an inverter.
In some scenarios, such as vehicle system applications, it is desirable to enable low temperature start-up of fuel cells, such as start-up and operation in a-30 ℃ environment. The controller realizes normal starting and operation of the fuel cell system under low-temperature environment by coordinately controlling the air supply system 12, the hydrogen supply system 13 and the thermal management system 14. The controller may, but is not limited to, implement corresponding functions by using a fuel cell dedicated controller (FCU).
In the operation process of the fuel cell system, the chemical reaction of hydrogen and oxygen can generate water, in a low-temperature environment, the residual water can be frozen in a local area of an air flow channel and/or a hydrogen flow channel, and self-heating in the operation process of the fuel cell system can promote the local ice to melt to cause water flooding of the flow channel (the hydrogen flow channel and/or an oxygen flow channel), when the output current of the DC/DC converter is overlarge, the local water flooding phenomenon in the flow channel cannot be timely eliminated, so that the gas distribution of the flow channel in each single cell is uneven, the local counter electrode of the cell stack occurs, the voltage of part of the single cells in the cell stack is lower than that of the normal single cell, namely the voltage of part of the single cells is low, and the fuel cell cannot be normally started; when the output current of the DC/DC converter is too small, the time required for low-temperature starting of the fuel cell system is long, and the rapid starting cannot be realized, so that the requirement for vehicles cannot be met.
The local antipole means that the flow direction of the local area positron and the negative electron does not coincide with the expected flow direction.
Based on the above situation, the controller determines the voltage of each unit cell in response to the low-temperature start instruction of the fuel cell, and adjusts the output current of the DC/DC converter according to the voltage of each unit cell so that the output current of the DC/DC converter has a positive correlation with the voltage of the unit cell. Since the single battery with the minimum voltage can best reflect the single low voltage problem of the single battery, the DC/DC converter can be associated with the single battery with the minimum voltage, so that the output current of the DC/DC converter is positively correlated with the voltage of the single battery with the minimum voltage. The low-temperature start command may be generated by the fuel cell system according to a received external start command.
By adjusting the output current of the DC/DC converter, the probability of local pole reversal of a fuel cell system due to overlarge output current of the DC/DC converter is reduced, and the time required by low-temperature start of the fuel cell system is shortened, so that the reliability of the fuel cell system is improved.
The cold start-up process of the fuel cell system will be described in detail with reference to fig. 1.
The air supply system 12 is used to supply air to the stack. The air supply system 12 includes an air line 121, an air filter 122, a three-way valve 123, an air compressor 124, and a backpressure valve 125. The air line 121 communicates with an air flow passage in the stack 11 and forms a circuit for circulating air with the air flow passage. An air filter 122, a three-way valve 123, an air compressor 124, and a back pressure valve 125 are provided on the air line 121.
Because the air compressor 124 in the air supply system is started slowly, in the process of starting the fuel cell at a low temperature, the controller responds to a low-temperature starting instruction of the fuel cell, generally, the air supply system 12 is started first, and after the air compressor 124 is started, the controller starts the hydrogen supply system 13, so that the hydrogen consumption can be optimally saved; in addition, if the hydrogen supply system 13 is started up first, the hydrogen discharge is not facilitated because the concentration of the hydrogen discharge would exceed the standard without mixing of air.
During the operation of the fuel cell system, the chemical reaction between hydrogen and oxygen generates water, and in a low-temperature environment, the water remaining in the stack freezes in a local area of the air flow channel after the fuel cell system stops moving. In one embodiment, to avoid local freezing of water remaining from the last operation of the fuel cell system, which could affect the current cold start of the fuel cell system, the controller controls the air supply system 12 to be internally cycled prior to the actual hydrogen and oxygen deliveries.
During internal circulation, the controller starts the air compressor 124 and controls the three-way valve 123 to act, air enters the galvanic pile from the input end of the air flow channel after being pressurized and heated by the air compressor 124, the temperature of the air is increased after being compressed by the air compressor, the air with the increased temperature flows through the air flow channel of the galvanic pile to heat and blow the air flow channel, liquefied moisture in the air flow channel is taken away, the air output from the output end of the air flow channel circularly enters the air compressor 124 through the three-way valve 123, and the circulation is performed for n times so as to melt ice formed by residual water in the air flow channel.
The number of n can be set according to actual requirements, and can be 2, 3 or more.
After the internal circulation is completed, the air supply system 12 enters the external circulation, the controller opens the air back pressure valve 125 and opens the three-way valve 123 to a target position (for example, an intermediate position), and after the external air passing through the air filter 122 is pressurized and heated by the air compressor, the external air enters the electric pile from the input end of the air flow channel, and the external air performs a chemical reaction with the hydrogen provided by the hydrogen supply system 13 to realize power generation on one hand, and can heat the air flow channel on the other hand. Air which does not participate in the chemical reaction is output from the output end of the air channel, a part of the air output from the output end of the air channel is discharged out of the air pipeline 121 through the backpressure valve 125, and a part of the air is circularly input into the air compressor 124 through the three-way valve 123. At this time, a part of the air input into the air compressor 124 is the fresh air passing through the air filter 122, and a part of the air is the air output from the cell stack.
In the process that the air output from the output end of the air channel is discharged out of the air pipeline 121 through the backpressure valve 125, water produced by ice melting in the air channel and water produced by chemical reaction are taken out of the pile, so that the risk of flooding is reduced.
The supply amount of oxygen input to the stack is related to the output current of the stack. In one embodiment, the controller determines an output current of the stack, which is detected by a stack inspection system. The controller determines whether the output current of the stack is greater than a target current value, and if the determination result is that the output current of the stack is greater than the target current value, which indicates that the oxygen supply amount for performing the chemical reaction in the stack is less than the required amount, and the oxygen supply amount should be increased, the controller controls the three-way valve 123 to operate to increase the opening of the port connected to the air filter 122, so that all the air input to the air compressor 125 is fresh air passing through the air filter 122, and at this time, the air supply system 12 enters complete external circulation.
Wherein, the target current value can be set according to the actual requirement, for example, set to 0.3A/CM2。
The hydrogen supply system 13 is used to supply hydrogen to the stack. The hydrogen supply system 13 includes a hydrogen pipe 131, a hydrogen tank 132 for supplying hydrogen, a reflux device 133, a water reservoir 134, a tail valve 135, and a proportional valve 136. The hydrogen pipe 131 communicates with a hydrogen flow passage in the stack 11, and forms a circuit for circulating hydrogen with the hydrogen flow passage. A return 133, a reservoir 134, a tail valve 135 and a proportional valve 136 are provided on the hydrogen line 131.
After the air supply system 12 completes the internal circulation, the controller opens the proportional valve 136 and controls the three-way valve 133 to operate, so as to input the hydrogen gas in the hydrogen tank into the stack from the input end of the hydrogen flow channel to perform a chemical reaction with the oxygen in the stack. The supply amount of hydrogen input to the stack is related to the output current of the stack, and the controller controls the supply amount of hydrogen input to the stack by controlling the opening degree of the proportional valve 136.
Chemical reaction, the galvanic pile can self-heat; to achieve a fast self-start of the fuel cell, the thermal management system 14 heats the stack; in all the situations, ice formed by the residual water in the hydrogen flow channel is melted, in order to avoid the phenomenon of water flooding caused by the ice melting in the hydrogen flow channel, the controller intermittently opens the tail drain valve 135, and during the opening period of the tail drain valve 135, accumulated water in the hydrogen flow channel is discharged by hydrogen (hydrogen which does not participate in chemical reaction) output by the galvanic pile through the water accumulator 134 and the tail drain valve 135, and meanwhile, the hydrogen excess coefficient can be improved; during the closing period of the tail discharge valve 135, hydrogen output by the stack is circularly input into the stack by the return device 133 so as to improve the utilization rate of the hydrogen; during the closing of the tail valve 135, the accumulated water carried over by the hydrogen gas from the hydrogen flow path is stored in the water reservoir 134.
The opening and closing frequency of the tail valve 135 can be set according to actual requirements.
The thermal management system 14 is used to heat the stack. The thermal management system 14 includes a water flow line 141, a water pump 142, a three-way valve 143, a radiator 144, a heater 145, and a water temperature sensor 146. The water flow line 141 communicates with a water flow passage in the stack 11 and forms a circuit for circulating cooling water with the water flow passage. The water pump 142, the three-way valve 143, the radiator 144, the heater 145, and the water temperature sensor 146 are all disposed on the water flow line 141. Wherein, the heater can be but not limited to PTC thermal sensitive ceramic electric heater.
During a low temperature start-up of the fuel cell, the controller may sequentially start the air supply system 12, the thermal management system 14; to save startup time, the controller may simultaneously activate the air supply system 12 and the thermal management system 14.
During a cold start-up, the controller controls the thermal management system 14 to heat the stack in order to rapidly heat the stack. The controller starts the water pump 142 and the heater 145 and controls the three-way valve 143 to operate, the cooling water in the water flow pipeline 141 enters the galvanic pile from the input end of the water flow channel through the three-way valve 143 and the water pump 142 after being heated by the heater 145, the heated cooling water flows through the water flow channel to heat the galvanic pile, the cooling water output by the galvanic pile is heated by the heater and then circulates to enter the galvanic pile, and the galvanic pile can be heated rapidly by the circulation.
In one embodiment, the water temperature sensor 146 detects the temperature of the water in the water flow line 141 in real time and sends the detected temperature to the controller, so that the controller controls the heater 145 to stop heating the stack when the temperature of the water reaches a temperature threshold, and/or controls the radiator 144 to cool the water in the water flow line, so that the cooled water flows into the water flow channel, thereby implementing over-temperature protection.
During the low-temperature starting process of the fuel cell system, the output current of the DC/DC converter 15 determines the power generation power of the stack, the output current of the DC/DC converter 15 is in positive correlation with the power generation power of the stack, the larger the output current of the DC/DC converter 15 is, the larger the power generation power of the stack is, and the larger the power generation power of the stack is, the larger the self-heating of the stack is, so the sudden increase of the output current of the DC/DC converter 15 may cause the sudden increase of the self-heating of the stack, further the local accumulated water in the flow channel may not be removed in time, the gas distribution of the flow channel in each unit cell is uneven, the local under-gas under the large current occurs, the local counter-pole of the stack occurs, and the voltage of the unit cell of the local counter-pole is lower than the voltage of the normal unit cell, so that the fuel cell cannot be started normally. Therefore, during the low-temperature start-up of the fuel cell system, the output current of the DC/DC converter 15 needs to be adjusted according to the voltage of each unit cell, specifically:
the controller monitors the voltage of each single battery through the galvanic pile inspection system, and the judging unit of the controller judges whether the local antipole risk of the galvanic pile exists according to the voltage of each single battery.
In one example, the judgment condition is whether the voltage of the single battery with the minimum voltage in each single battery is smaller than a voltage threshold, if the judgment result is yes, it is indicated that the problem of low voltage of part of the single batteries exists, and the risk of local reversal of the electric pile exists, the adjusting unit of the controller reduces the output current of the DC/DC converter to reduce the power generation power of the electric pile, so that the temperature of the electric pile is slowly increased, the water generated by melting ice in the electric pile can be smoothly discharged out of the flow channel, and the occurrence of local water accumulation in the electric pile is avoided.
Of course, the output current of the DC/DC converter is too small to quickly start the fuel cell. If the voltage of the single battery with the minimum voltage is larger than the voltage threshold value according to the judgment result, the problem that the voltage of part of the single batteries is low is solved, and the risk of local electrode reversal of the electric pile is avoided, the adjusting unit of the controller increases the output current of the DC/DC converter, so that the starting time of the fuel cell system is shortened, the fuel cell system is quickly started, and the quick starting requirement of the vehicle system is met. In the process of controlling the output current of the DC/DC converter to increase, the output current of the DC/DC converter can be controlled to increase according to a certain slope.
In one example, the judgment condition is that whether the difference value of the voltages of the two single batteries is larger than the difference threshold value or not, if the judgment result is yes, it is indicated that the voltage of part of the single batteries is low, and the risk of local reversal of the galvanic pile exists, the adjusting unit of the controller reduces the output current of the DC/DC converter to reduce the power generation power of the galvanic pile, so that the temperature of the galvanic pile is slowly increased, the water melted in the galvanic pile can be smoothly discharged out of the flow channel, and the occurrence of local water accumulation in the galvanic pile is avoided.
Of course, the output current of the DC/DC converter is too small to quickly start the fuel cell. If the judgment result shows that the difference value of the voltages of any two single batteries is smaller than the difference threshold value, the problem that the voltages of part of the single batteries are low is solved, and the risk of local reversal of the electric pile is avoided, the adjusting unit of the controller increases the output current of the DC/DC converter, so that the starting time of the fuel cell system is shortened, the fuel cell system is quickly started, and the quick starting requirement of the vehicle system is met. In the process of controlling the output current of the DC/DC converter to increase, the output current of the DC/DC converter can be controlled to increase according to a certain slope.
In one example, the determination condition is whether the voltage of the single cell with the minimum voltage in each single cell is smaller than a voltage threshold, and whether the difference value of the voltages of the two single cells is larger than a difference threshold, if the determination result of the two determination conditions is yes, it is indicated that the problem of voltage single of part of the single cells exists, and there is a risk of local reversal of the stack, the adjusting unit of the controller reduces the output current of the DC/DC converter to reduce the power generation of the stack, so that the temperature of the stack is slowly increased, water melted in the stack can be smoothly discharged out of the flow channel, and local water accumulation in the stack is avoided.
Of course, the output current of the DC/DC converter is too small to quickly start the fuel cell. If the judgment result is that the voltage of the single battery with the minimum voltage is greater than the voltage threshold and the difference value of the voltages of any two single batteries is smaller than the difference threshold, it is indicated that the problem of low voltage of part of the single batteries does not exist and the risk of local reversal of the electric pile does not exist, the adjusting unit of the controller increases the output current of the DC/DC converter so as to shorten the starting time of the fuel cell system, quickly start and start the fuel cell system and meet the quick starting requirement of the vehicle system. In the process of controlling the output current of the DC/DC converter to increase, the output current of the DC/DC converter can be controlled to increase according to a certain slope.
The above-mentioned reduction of the output current of the DC/DC converter and the increase of the output current of the DC/DC converter can be realized by, but not limited to, a closed-loop control algorithm such as PID.
The voltage threshold and the difference threshold can be set according to actual requirements.
The following describes the control process of the DC/DC converter in detail, taking the voltage threshold as a condition for determining whether there is a risk of local electrode reversal of the stack, and taking the voltage threshold as 0.5V as an example.
Supposing that the electric pile comprises 5 single batteries, the electric pile inspection system determines that the voltages of the 5 single batteries are respectively 0.8V, 0.9V, 0.85V and 0.4V, the voltage of the single battery with the minimum voltage in the 5 single batteries is 0.4V and 0.4V < 0.5V, the problem of voltage single low of partial single batteries is determined, the risk of local electrode reversal of the electric pile exists, and the controller rapidly reduces the output current of the DC/DC converter.
The electric pile comprises 5 single batteries, the electric pile inspection system determines that the voltages of the 5 single batteries are 0.8V, 0.9V, 0.85V and 0.6V respectively, the voltage of the single battery with the voltage of the minimum value in the 5 single batteries is 0.6V, 0.6V is more than 0.5V, the problem of voltage single low of partial single batteries is determined to be absent, the risk of local electrode reversal of the electric pile does not exist, the controller increases the output current of the DC/DC converter, so that the starting time of the fuel cell system is shortened, and the fuel cell system is started and started quickly.
Assuming that the electric pile comprises 5 single batteries, the electric pile inspection system determines that the voltages of the 5 single batteries are respectively 0.8V, 0.9V, 0.85V and 0.5V, the voltage of the single battery with the minimum voltage in the 5 single batteries is 0.5V, and 0.5V is 0.5V, so that the problem of voltage single low of partial single batteries is determined to be absent, the risk of local electrode reversal of the electric pile is absent, and the controller can not change the output current of the DC/DC converter.
Therefore, in the process of starting the fuel cell system at low temperature, the output current of the DC/DC converter is regulated by the voltage of each single cell, the problem of low voltage of partial single cells is avoided as much as possible, the risk of local reversal of the galvanic pile is reduced, the fuel cell system can be started quickly and successfully in the low-temperature environment, and the reliability of the fuel cell is improved.
For the timing of adjusting the output current of the DC/DC converter, that is, the timing of determining the voltage of each unit cell by the controller, in one embodiment, after the voltage of the stack is established to the open-circuit voltage, that is, the chemical reaction in the stack is performed for a preset time period, the controller may determine the voltage of each unit cell and adjust the output current of the DC/DC converter.
Fig. 2 is a flowchart of a low-temperature start control method for a fuel cell system according to an exemplary embodiment of the present invention, applied to the fuel cell system according to any of the embodiments described above, and referring to fig. 2, the method includes the following steps:
The low-temperature start command may be generated by the fuel cell system according to a received external start command. The voltage of each unit cell can be determined by a stack inspection system.
Since the single battery with the minimum voltage can best reflect the single low voltage problem of the single battery, the DC/DC converter can be associated with the single battery with the minimum voltage, so that the output current of the DC/DC converter is positively correlated with the voltage of the single battery with the minimum voltage.
In one embodiment, when the output current of the DC/DC converter is adjusted, whether the voltage of the single cell of which the voltage is the minimum value in each single cell is smaller than a voltage threshold is determined, if so, it is indicated that a problem of voltage level of a part of the single cells exists, and a risk of local pole reversal of the cell stack exists, the output current of the DC/DC converter is reduced to reduce the power generation power of the cell stack, so that the temperature of the cell stack is slowly increased, water generated by melting ice in the cell stack can be smoothly discharged out of a flow channel, and local water accumulation in the cell stack is avoided.
Of course, the output current of the DC/DC converter is too small to quickly start the fuel cell. If the voltage of the single battery with the minimum voltage is larger than the voltage threshold value according to the judgment result, the problem that the voltage of part of the single batteries is low is solved, and the risk of local electrode reversal of the electric pile is avoided, the output current of the DC/DC converter is increased, so that the starting time of the fuel cell system is shortened, the fuel cell system is started quickly, and the quick starting requirement of the vehicle system is met. In the process of controlling the output current of the DC/DC converter to increase, the output current of the DC/DC converter can be controlled to increase according to a certain slope.
In one embodiment, when the output current of the DC/DC converter is adjusted, whether the difference between the voltages of two single batteries is greater than the difference threshold is determined, if yes, it is indicated that the voltage of a part of single batteries is low, and there is a risk of local reversal of the stack, the output current of the DC/DC converter is reduced to reduce the power generation power of the stack, so that the temperature of the stack is slowly increased, the water melted in the stack can be smoothly discharged from the flow channel, and local water accumulation in the stack is avoided.
Of course, the output current of the DC/DC converter is too small to quickly start the fuel cell. If the judgment result shows that the difference value of the voltages of any two single batteries is smaller than the difference threshold value, the problem of low voltage of part of the single batteries does not exist, and the risk of local reversal of the electric pile does not exist, the output current of the DC/DC converter is increased, so that the starting time of the fuel cell system is shortened, the fuel cell system is started quickly, and the quick starting requirement of the vehicle system is met. In the process of controlling the output current of the DC/DC converter to increase, the output current of the DC/DC converter can be controlled to increase according to a certain slope.
In one embodiment, when the output current of the DC/DC converter is adjusted, it is determined whether the voltage of the cell with the minimum voltage in each cell is smaller than a voltage threshold, and whether a difference between the voltages of two cells is greater than a difference threshold, if the two determination conditions are both yes, it is indicated that a voltage level problem of a part of the cells exists, and a risk of local polarity reversal of the cell stack exists, the output current of the DC/DC converter is reduced to reduce the power generation power of the cell stack, so that the temperature of the cell stack is slowly increased, water melted in the cell stack can be smoothly discharged from a flow channel, and local water accumulation in the cell stack is avoided.
Of course, the output current of the DC/DC converter is too small to quickly start the fuel cell. If the judgment result is that the voltage of the single battery with the minimum voltage is greater than the voltage threshold and the difference value of the voltages of any two single batteries is smaller than the difference threshold, it is indicated that the problem of low voltage of part of the single batteries does not exist and the risk of local reversal of the galvanic pile does not exist, the output current of the DC/DC converter is increased to shorten the starting time of the fuel cell system, the fuel cell system is started quickly, and the quick starting requirement of the vehicle system is met. In the process of controlling the output current of the DC/DC converter to increase, the output current of the DC/DC converter can be controlled to increase according to a certain slope.
The above-mentioned reduction of the output current of the DC/DC converter and the increase of the output current of the DC/DC converter can be realized by, but not limited to, a closed-loop control algorithm such as PID.
The voltage threshold and the difference threshold can be set according to actual requirements.
In the process of low-temperature starting of the fuel cell system, the output current of the DC/DC converter is regulated through the voltage of each single cell, so that on one hand, the probability of local pole reversal risk of a galvanic pile of the fuel cell system due to overlarge output current of the DC/DC converter is reduced, on the other hand, the time required by the low-temperature starting of the fuel cell system is shortened, and further the reliability of the fuel cell system is improved.
In one embodiment, in order to realize the low-temperature quick start of the fuel cell system, the method further comprises the step of heating the electric pile.
Corresponding to the low-temperature starting control method of the fuel cell system, the embodiment of the invention also provides an embodiment of a low-temperature starting control device of the fuel cell system.
Fig. 3 is a block schematic diagram showing a low-temperature start control device of a fuel cell system according to an exemplary embodiment of the present invention, the low-temperature start control device being applied to the fuel cell system provided in any one of the embodiments, and referring to fig. 3, the low-temperature start control device includes:
a determination module 31 for determining the voltage of each unit cell in response to a low-temperature start instruction of the fuel cell;
a regulating module 32, configured to regulate an output current of the DC/DC converter according to the voltage of each battery cell, where the output current is positively correlated with the voltage of the battery cell.
Optionally, the adjusting module 32 comprises:
the judging unit is used for judging whether the voltage of the single battery with the minimum voltage in each single battery is smaller than a voltage threshold value and/or whether the difference value of the voltages of the two single batteries is larger than a difference value threshold value;
the regulating unit is used for reducing the output current of the DC/DC converter under the condition that the voltage of the single battery with the minimum voltage is smaller than a voltage threshold value and/or the difference value of the voltages of the two single batteries is larger than a difference value threshold value; and increasing the output current of the DC/DC converter under the condition that the voltage of the single battery with the minimum voltage is greater than a voltage threshold value and/or the difference value of the voltages of any two single batteries is smaller than a difference value threshold value.
Optionally, the fuel cell further comprises: a heater;
the device further comprises:
and the heating module is used for responding to the low-temperature starting instruction and controlling the heater to heat the galvanic pile.
Fig. 4 is a schematic diagram of an electronic device according to an exemplary embodiment of the present invention, and illustrates a block diagram of an exemplary electronic device 40 suitable for implementing embodiments of the present invention. The electronic device 40 shown in fig. 4 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiment of the present invention.
As shown in FIG. 4, electronic device 40 may take the form of a general purpose computing device, which may be a server device, for example. The components of electronic device 40 may include, but are not limited to: the at least one processor 41, the at least one memory 42, and a bus 43 connecting the various system components (including the memory 42 and the processor 41).
The bus 43 includes a data bus, an address bus, and a control bus.
The memory 42 may include volatile memory, such as Random Access Memory (RAM)421 and/or cache memory 422, and may further include Read Only Memory (ROM) 423.
The processor 41 executes various functional applications and data processing, such as the methods provided by any of the above embodiments, by running a computer program stored in the memory 42.
It should be noted that although in the above detailed description several units/modules or sub-units/modules of the electronic device are mentioned, such a division is merely exemplary and not mandatory. Indeed, the features and functionality of two or more of the units/modules described above may be embodied in one unit/module according to embodiments of the invention. Conversely, the features and functions of one unit/module described above may be further divided into embodiments by a plurality of units/modules.
The embodiment of the present invention further provides a readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the method provided by any of the above embodiments.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (13)
1. A fuel cell system, characterized by comprising:
an electric stack comprising a plurality of unit cells;
a DC/DC converter connected to the cell stack;
and the controller is used for responding to a low-temperature starting instruction of the fuel cell, determining the voltage of each single battery, and regulating the output current of the DC/DC converter according to the voltage of each single battery, wherein the output current is positively correlated with the voltage of the single battery.
2. The fuel cell system according to claim 1, wherein the controller includes:
the judging unit is used for judging whether the voltage of the single battery with the minimum voltage in each single battery is smaller than a voltage threshold value and/or whether the difference value of the voltages of the two single batteries is larger than a difference value threshold value;
the regulating unit is used for reducing the output current of the DC/DC converter under the condition that the voltage of the single battery with the minimum voltage is smaller than a voltage threshold value and/or the difference value of the voltages of two single batteries is larger than a difference value threshold value; and increasing the output current of the DC/DC converter when the voltage of the single battery with the minimum voltage is greater than a voltage threshold value and/or the difference value of the voltages of any two single batteries is less than a difference threshold value.
3. The fuel cell system according to claim 1, wherein the fuel cell further comprises: a heater;
the controller is also used for responding to the low-temperature starting instruction and controlling the heater to heat the electric pile.
4. The fuel cell system of claim 3, wherein a water flow passage is provided in the stack; the fuel cell system further comprises a water flow pipeline communicated with the water flow channel;
the heater is arranged on the water flow pipeline and used for heating the cooling water in the water flow pipeline so as to enable the heated cooling water to flow into the water flow channel.
5. The fuel cell system according to claim 4, further comprising a radiator and a water temperature sensor; the radiator and the water temperature sensor are arranged on the water flow pipeline; the radiator and the water temperature sensor are both connected with the controller;
the water temperature sensor is used for detecting the water temperature of the cooling water in the water flow pipeline and sending the water temperature to the controller;
the controller is used for controlling the heater to stop heating the galvanic pile under the condition that the water temperature reaches the temperature threshold value, and/or controlling the radiator to cool the cooling water in the water flow pipeline, so that the cooled cooling water flows into the water flow channel.
6. The fuel cell system according to claim 1, wherein a hydrogen gas flow channel is provided in the stack; the fuel cell system also comprises a tail exhaust valve and a hydrogen pipeline communicated with the hydrogen flow channel, wherein the hydrogen pipeline is used for conveying hydrogen for the galvanic pile, and the tail exhaust valve is arranged on the hydrogen pipeline and is positioned at the output end of the hydrogen flow channel;
the controller is also used for intermittently opening the tail exhaust valve in the process that the hydrogen pipeline delivers hydrogen for the galvanic pile.
7. The fuel cell system according to claim 6, wherein an air flow passage is provided in the stack; the fuel cell system also comprises an air compressor and an air pipeline communicated with the air flow channel;
the controller is also used for controlling the air compressor to start before the hydrogen pipeline conveys hydrogen for the electric pile, so that the air compressor conveys air to the air flow channel after pressurizing and heating the air.
8. A low-temperature start-up control method of a fuel cell system, characterized in that the fuel cell includes a stack and a DC/DC converter connected to the stack; the electric stack comprises a plurality of single batteries; the control method comprises the following steps:
determining the voltage of each single battery in response to a low-temperature starting instruction of the fuel battery;
and regulating the output current of the DC/DC converter according to the voltage of each single battery, wherein the output current is positively correlated with the voltage of the single battery.
9. The low-temperature start-up control method of a fuel cell system according to claim 8, wherein adjusting the output current of the DC/DC converter in accordance with the voltage of each of the unit cells includes:
judging whether the voltage of the single battery with the minimum voltage in each single battery is smaller than a voltage threshold value and/or whether the difference value of the voltages of the two single batteries is larger than a difference threshold value;
reducing the output current of the DC/DC converter under the condition that the voltage of the single battery with the minimum voltage is smaller than a voltage threshold and/or the difference value of the voltages of the two single batteries is larger than a difference threshold;
and increasing the output current of the DC/DC converter when the voltage of the single battery with the minimum voltage is greater than a voltage threshold value and/or the difference value of the voltages of any two single batteries is less than a difference threshold value.
10. The low-temperature start-up control method of the fuel cell system according to claim 8, wherein the fuel cell further comprises: a heater;
the low-temperature start control method further includes:
and controlling the heater to heat the electric pile in response to the low-temperature starting instruction.
11. A low-temperature start-up control device of a fuel cell system, characterized in that the fuel cell includes a stack and a DC/DC converter connected to the stack; the electric stack comprises a plurality of single batteries; the control device includes:
the determining module is used for responding to a low-temperature starting instruction of the fuel cell and determining the voltage of each single battery;
and the adjusting module is used for adjusting the output current of the DC/DC converter according to the voltage of each single battery, and the output current is positively correlated with the voltage of each single battery.
12. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of any of claims 8 to 10 when executing the computer program.
13. A readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 8 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110925830.5A CN113793952A (en) | 2021-08-12 | 2021-08-12 | Fuel cell system and low-temperature starting control method and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110925830.5A CN113793952A (en) | 2021-08-12 | 2021-08-12 | Fuel cell system and low-temperature starting control method and device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113793952A true CN113793952A (en) | 2021-12-14 |
Family
ID=78875953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110925830.5A Pending CN113793952A (en) | 2021-08-12 | 2021-08-12 | Fuel cell system and low-temperature starting control method and device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113793952A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114914492A (en) * | 2022-05-24 | 2022-08-16 | 佛山仙湖实验室 | Local voltage detection device of fuel cell system and detection analysis method thereof |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898796A (en) * | 2017-03-21 | 2017-06-27 | 浙江瀚广新能源科技有限公司 | A kind of hydrogen fuel cell activation system and method |
| CN208157535U (en) * | 2018-01-17 | 2018-11-27 | 安徽明天氢能科技股份有限公司 | A kind of air supply system of fuel cell system |
| CN208970646U (en) * | 2018-12-05 | 2019-06-11 | 江苏氢电新能源有限公司 | A kind of fuel cell started quickly at low temperature system |
| CN109904494A (en) * | 2019-02-01 | 2019-06-18 | 清华大学 | Low-temperature start method, computer equipment and the storage medium of fuel cell system |
| CN110429303A (en) * | 2019-07-03 | 2019-11-08 | 深圳国氢新能源科技有限公司 | Hydrogen fuel cell engine cold-start method |
| CN111048806A (en) * | 2019-12-30 | 2020-04-21 | 上海神力科技有限公司 | Rapid low-temperature starting method of fuel cell system |
| CN111082103A (en) * | 2019-12-31 | 2020-04-28 | 上海神力科技有限公司 | Low-temperature self-starting method of fuel cell system |
| CN111092249A (en) * | 2018-10-22 | 2020-05-01 | 本田技研工业株式会社 | Fuel cell system and control method thereof |
| CN111092246A (en) * | 2019-12-30 | 2020-05-01 | 上海神力科技有限公司 | Fuel cell system starting method |
| CN111682243A (en) * | 2020-05-30 | 2020-09-18 | 同济大学 | Quick cold start system and quick cold start method for fuel cell |
| CN111952631A (en) * | 2020-08-17 | 2020-11-17 | 河南豫氢动力有限公司 | Low-temperature cold start control method for vehicle fuel cell system |
| CN112349932A (en) * | 2020-10-23 | 2021-02-09 | 无锡威孚高科技集团股份有限公司 | Control method, device and system for quick start of proton exchange membrane fuel cell |
| CN112397748A (en) * | 2020-11-13 | 2021-02-23 | 上海捷氢科技有限公司 | Fuel cell system starting control method and device |
| CN112713289A (en) * | 2020-12-25 | 2021-04-27 | 中国第一汽车股份有限公司 | Fuel cell control method, device, equipment and storage medium |
| CN113130945A (en) * | 2021-03-22 | 2021-07-16 | 苏州弗尔赛能源科技股份有限公司 | Fuel cell stack performance recovery method and system |
-
2021
- 2021-08-12 CN CN202110925830.5A patent/CN113793952A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106898796A (en) * | 2017-03-21 | 2017-06-27 | 浙江瀚广新能源科技有限公司 | A kind of hydrogen fuel cell activation system and method |
| CN208157535U (en) * | 2018-01-17 | 2018-11-27 | 安徽明天氢能科技股份有限公司 | A kind of air supply system of fuel cell system |
| CN111092249A (en) * | 2018-10-22 | 2020-05-01 | 本田技研工业株式会社 | Fuel cell system and control method thereof |
| CN208970646U (en) * | 2018-12-05 | 2019-06-11 | 江苏氢电新能源有限公司 | A kind of fuel cell started quickly at low temperature system |
| CN109904494A (en) * | 2019-02-01 | 2019-06-18 | 清华大学 | Low-temperature start method, computer equipment and the storage medium of fuel cell system |
| CN110429303A (en) * | 2019-07-03 | 2019-11-08 | 深圳国氢新能源科技有限公司 | Hydrogen fuel cell engine cold-start method |
| CN111092246A (en) * | 2019-12-30 | 2020-05-01 | 上海神力科技有限公司 | Fuel cell system starting method |
| CN111048806A (en) * | 2019-12-30 | 2020-04-21 | 上海神力科技有限公司 | Rapid low-temperature starting method of fuel cell system |
| CN111082103A (en) * | 2019-12-31 | 2020-04-28 | 上海神力科技有限公司 | Low-temperature self-starting method of fuel cell system |
| CN111682243A (en) * | 2020-05-30 | 2020-09-18 | 同济大学 | Quick cold start system and quick cold start method for fuel cell |
| CN111952631A (en) * | 2020-08-17 | 2020-11-17 | 河南豫氢动力有限公司 | Low-temperature cold start control method for vehicle fuel cell system |
| CN112349932A (en) * | 2020-10-23 | 2021-02-09 | 无锡威孚高科技集团股份有限公司 | Control method, device and system for quick start of proton exchange membrane fuel cell |
| CN112397748A (en) * | 2020-11-13 | 2021-02-23 | 上海捷氢科技有限公司 | Fuel cell system starting control method and device |
| CN112713289A (en) * | 2020-12-25 | 2021-04-27 | 中国第一汽车股份有限公司 | Fuel cell control method, device, equipment and storage medium |
| CN113130945A (en) * | 2021-03-22 | 2021-07-16 | 苏州弗尔赛能源科技股份有限公司 | Fuel cell stack performance recovery method and system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114914492A (en) * | 2022-05-24 | 2022-08-16 | 佛山仙湖实验室 | Local voltage detection device of fuel cell system and detection analysis method thereof |
| CN114914492B (en) * | 2022-05-24 | 2023-10-31 | 佛山仙湖实验室 | Local voltage detection device of fuel cell system and detection analysis method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106558713B (en) | Low-temperature starting system and operation method for fuel cell | |
| CN112397748B (en) | Fuel cell system starting control method and device | |
| US10090539B2 (en) | Fuel cell system | |
| US8384342B2 (en) | Fuel cell system and control method thereof | |
| US6893758B2 (en) | Fuel cell system and method of stopping the system | |
| US7455920B2 (en) | Fuel cell system | |
| JP6137122B2 (en) | Method for controlling flow rate of cooling medium in fuel cell system, and fuel cell system | |
| CN209786084U (en) | cooling system for vehicle fuel cell system | |
| CN217955921U (en) | Purging control device for fuel cell system | |
| CN111987333A (en) | Control method and control system of fuel cell energy storage system | |
| WO2024109891A1 (en) | Heating method and apparatus for power battery of hydrogen energy hybrid automobile, medium, and device | |
| CN113140749A (en) | Low-temperature quick start control method and system for fuel cell | |
| WO2024109883A1 (en) | Power battery heating method and apparatus for hydrogen energy hybrid vehicle, medium, and device | |
| CN113809353A (en) | Fuel cell control method, control system, electronic device and storage medium | |
| JP3876784B2 (en) | Fuel cell system | |
| JP2022106870A (en) | Fuel cell operation method and controller therefor | |
| CN102769144A (en) | Air heating system for low-temperature start of fuel cells and control method thereof | |
| CN116169327A (en) | Anode purging control method and device, electronic equipment and fuel cell | |
| CN113793952A (en) | Fuel cell system and low-temperature starting control method and device thereof | |
| CN113581018A (en) | Thermal management method, controller, medium and equipment of fuel cell vehicle | |
| JP2010205654A (en) | Fuel cell system | |
| JP2010123493A (en) | Fuel cell system | |
| CN116505016A (en) | Proton exchange membrane fuel cell water heat management system and method | |
| CN114388940B (en) | Vehicle, vehicle-mounted fuel cell heat preservation method, device and equipment | |
| US11664508B2 (en) | Fuel cell system and method of controlling fuel cell system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211214 |