CN115939454A - Fuel cell hydrogen utilization optimization system and hydrogen utilization optimization method - Google Patents
Fuel cell hydrogen utilization optimization system and hydrogen utilization optimization method Download PDFInfo
- Publication number
- CN115939454A CN115939454A CN202211716412.6A CN202211716412A CN115939454A CN 115939454 A CN115939454 A CN 115939454A CN 202211716412 A CN202211716412 A CN 202211716412A CN 115939454 A CN115939454 A CN 115939454A
- Authority
- CN
- China
- Prior art keywords
- hydrogen
- cavity
- air
- fuel cell
- gas
- 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.)
- Granted
Links
- 239000001257 hydrogen Substances 0.000 title claims abstract description 299
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 299
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 284
- 239000000446 fuel Substances 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000005457 optimization Methods 0.000 title claims description 26
- 239000007789 gas Substances 0.000 claims abstract description 179
- 239000003381 stabilizer Substances 0.000 claims abstract description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 63
- 150000002431 hydrogen Chemical class 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 16
- 238000003860 storage Methods 0.000 claims description 15
- 230000000087 stabilizing effect Effects 0.000 claims description 7
- 238000010926 purge Methods 0.000 abstract description 37
- 230000001276 controlling effect Effects 0.000 description 9
- 238000007599 discharging Methods 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 3
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
- Fuel Cell (AREA)
Abstract
The invention provides a fuel cell hydrogen utilization optimizing system and a hydrogen utilization optimizing method, wherein the fuel cell hydrogen utilization optimizing system comprises a fuel cell, the fuel cell comprises a hydrogen cavity and a cavity, the hydrogen cavity is communicated with a hydrogen supplier through a first gas pipeline, the cavity is communicated with an air supplier through a second gas pipeline, a gas pressure stabilizer is arranged on the first gas pipeline, an air branch is arranged on the second gas pipeline, the air branch is connected to an air inlet of the gas pressure stabilizer, and a control valve is arranged on the air branch. The fuel cell hydrogen utilization optimizing system provided by the invention can optimize the hydrogen cavity purging logic in a low-temperature state, and during low-temperature purging, air supplied by the air supplier enters the first gas pipeline through the air branch and finally passes through the hydrogen cavity to replace hydrogen used in the low-temperature purging process, so that the hydrogen loss is reduced, the hydrogen utilization rate is improved, and the endurance mileage of a fuel cell automobile is improved.
Description
Technical Field
The invention belongs to the technical field of fuel cells, relates to a fuel cell hydrogen utilization optimization system, and particularly relates to a fuel cell hydrogen utilization optimization system and a hydrogen utilization optimization method.
Background
In the actual operation process of the fuel cell system, the main method for strictly controlling the hydrogen utilization rate is the main research and discussion direction, in the mature fuel cell system, the main method for managing the hydrogen gas path is to effectively control the gas inlet amount of hydrogen through a hydrogen pressure stabilizing valve or a hydrogen injector, secondarily utilize the residual hydrogen discharged by a stack through a hydrogen circulating pump, control the pulse opening and closing time of a hydrogen tail discharge electromagnetic valve and a water discharge electromagnetic valve, control the hydrogen consumption on the premise of not influencing the performance of the stack, improve the hydrogen utilization rate as much as possible by controlling the purging time of the hydrogen in the startup and shutdown stage, effectively control the hydrogen consumption in southern areas with proper temperature, but in northern cities with severe cold climate in most time, because the hydrogen cavity and hollow cavity of the stack need to be purged for as long as possible when the system is shut down, discharge the water produced in the operation process of the stack as much as possible, prevent the proton freezing caused by the residual water in the interior after the system is shut down, generate serious damage to the hydrogen exchange membrane in the stack, the hydrogen used in the purging process, and greatly reduce the fuel cell utilization rate because the hydrogen energy is not greatly reduced by the continuous purging of the hydrogen.
CN114583216A discloses a method, a system and a storage medium for purging a fuel cell during a rapid shutdown, wherein the method comprises: after receiving the shutdown instruction, controlling one of a hydrogen system and an air system to stop supplying air to the fuel cell; controlling and conducting the electronic load and the fuel cell, and adjusting the current of the electronic load according to the residual electric quantity of the fuel cell; wherein the residual capacity is positively correlated with the load current; judging whether the residual electric quantity of the fuel cell meets a preset shutdown electric quantity range or not; if yes, controlling to disconnect the electronic load from the fuel cell; and controlling the hydrogen system and the air system to stop supplying air to the fuel cell, and controlling the inert gas purging system to purge inert gas to the anode end and the cathode end of the fuel cell simultaneously so as to carry out drying treatment. However, the rapid shutdown purging method of the fuel cell needs to additionally introduce inert gas, and the process and the used equipment structure are complicated and the practical application cost is high.
CN114447375A discloses a fuel cell system shutdown purge method. The technical scheme of the patent is as follows: a fuel cell system shutdown purge method comprising the steps of: purging in the first stage: setting a first-stage preset temperature to keep the temperature of a cooling medium at an inlet or an outlet of the fuel cell at more than or equal to the first-stage preset temperature; loading current, and purging the fuel cell until the monitored voltage is smaller than a preset voltage value; and (3) purging in the second stage: forcibly cooling the galvanic pile, and introducing gas into the galvanic pile for purging; and setting the preset temperature of the second stage, and stopping cooling and purging when the temperature of the fluid medium at the inlet or the outlet of the fuel cell is lower than the set temperature of the second stage, or reaching the set purging time, or reaching the set voltage average value or minimum value. However, the shutdown purge method of the fuel cell system still uses hydrogen during the shutdown purge, and the hydrogen is directly discharged into the atmosphere, which causes great waste of energy.
The prior art disclosed at present has certain defects, and has the problems of low hydrogen utilization rate and shortened endurance mileage of a fuel cell automobile caused by that hydrogen is directly discharged into the atmosphere in the low-temperature purging process of a hydrogen cavity. Therefore, it is important to develop and design a hydrogen utilization optimization system and a hydrogen utilization optimization method for a fuel cell.
Disclosure of Invention
The fuel cell hydrogen utilization optimizing system can optimize hydrogen cavity purging logic in a low-temperature state, and air supplied by an air supplier enters a first gas pipeline through an air branch during low-temperature purging and finally passes through a hydrogen cavity to replace hydrogen used in the low-temperature purging process, so that the hydrogen loss is reduced, the hydrogen utilization rate is improved, and the cruising range of a fuel cell automobile is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a fuel cell hydrogen utilization optimization system, which comprises a fuel cell, wherein the fuel cell comprises a hydrogen cavity and a cavity, the hydrogen cavity is communicated with a hydrogen supplier through a first gas pipeline, the cavity is communicated with an air supplier through a second gas pipeline, a gas pressure stabilizer is arranged on the first gas pipeline, an air branch is arranged on the second gas pipeline, the air branch is connected to an air inlet of the gas pressure stabilizer, and a control valve is arranged on the air branch.
The gas pressure stabilizer is provided with a hydrogen inlet and an air inlet respectively, a hydrogen supplier is communicated to the hydrogen inlet of the gas pressure stabilizer through a first gas pipeline, an air branch is communicated to the air inlet, a gas outlet is arranged on the gas pressure stabilizer, and the gas outlet is communicated to a hydrogen cavity through the first gas pipeline.
The control valve of the present invention includes a bypass valve.
The fuel cell hydrogen utilization optimizing system provided by the invention also has the function of detecting the atmospheric temperature, and when the atmospheric temperature is lower than the set temperature, the control valve is opened to enable the air supplied by the air supplier to enter the first gas pipeline from the air branch; when the atmospheric temperature is higher than the set temperature, the control valve is closed, so that the air supplied by the air supplier cannot enter the first air pipeline from the air branch pipeline.
The fuel cell hydrogen utilization optimizing system provided by the invention can optimize the hydrogen cavity purging logic in a low-temperature state, and during low-temperature purging, air supplied by the air supplier enters the first gas pipeline through the air branch and finally passes through the hydrogen cavity to replace hydrogen used in the low-temperature purging process, so that the hydrogen loss is reduced, the hydrogen utilization rate is improved, and the endurance mileage of a fuel cell automobile is improved.
As a preferred technical solution of the present invention, an intercooler is disposed on the second gas pipeline, a branch outlet is disposed on the intercooler, and the branch outlet is communicated to the air branch.
The intercooler is provided with a gas inlet, an air supplier is communicated to a hydrogen inlet of the intercooler through a second gas pipeline, the intercooler is respectively provided with an air outlet and a branch outlet, the air outlet is communicated to a cavity through the second gas pipeline, and the branch outlet is communicated to an air branch.
The intercooler is used for cooling the air supplied by the air supplier and realizing the shunting of the cooled air.
As a preferred technical solution of the present invention, a check valve is disposed on an air branch between the control valve and the intercooler.
The check valve is used for controlling the unidirectional flow of gas and preventing the gas in the first gas pipeline from reversely flowing to the second gas pipeline.
As a preferred embodiment of the present invention, a caliber of the air branch is not smaller than a caliber of the first gas line.
Preferably, the aperture of the air branch is equal to the aperture of the first gas pipeline.
As a preferable technical solution of the present invention, the maximum pressure value of the control valve is not less than twice the pressure value of the hydrogen chamber under the rated operation condition of the fuel cell.
Preferably, the maximum pressure value of the control valve is twice the maximum pressure value of the hydrogen cavity under the rated working condition of the fuel cell.
As a preferable technical solution of the present invention, a maximum pressure value of the check valve is not less than three times a pressure value of the first gas line under a rated operation condition of the fuel cell.
Preferably, the maximum pressure value of the check valve is equal to three times the pressure value of the first gas pipeline under the rated working condition of the fuel cell.
As a preferred embodiment of the present invention, the hydrogen gas supplier includes a hydrogen gas storage.
Preferably, the air supplier includes an air compressor.
In a second aspect, the present invention provides a hydrogen utilization optimizing method using the fuel cell hydrogen utilization optimizing system of the first aspect, the hydrogen utilization optimizing method comprising:
if the atmospheric temperature is lower than the set temperature, adjusting the gas pressure stabilizer to block the supply of hydrogen, opening the control valve, dividing the air supplied by the air supplier into two paths in the second gas pipeline, wherein one path sequentially flows through the air branch, the control valve, the gas pressure stabilizer and the first gas pipeline and then is introduced into the hydrogen cavity to discharge water in the hydrogen cavity; the other path is directly led into the cavity through a second gas pipeline so as to discharge water in the cavity.
According to the hydrogen utilization optimization method provided by the invention, when the atmospheric temperature is lower than the set temperature, the supply of hydrogen is blocked, the water in the cavity is discharged by using the air supplied by the air supplier, and meanwhile, the water in the hydrogen cavity is discharged by using the air supplied by the air supplier to replace the hydrogen used in the purging process, so that the hydrogen consumption in the low-temperature purging process is reduced, and the hydrogen utilization rate is improved.
As a preferred embodiment of the present invention, the hydrogen utilization optimizing method includes:
if the atmospheric temperature is lower than the set temperature, adjusting a gas pressure stabilizer to open the supply of hydrogen, closing a control valve, introducing the hydrogen into a hydrogen cavity through a first gas pipeline by a hydrogen supplier to discharge water in the hydrogen cavity, introducing air into the cavity through a second gas pipeline by an air supplier to discharge the water in the cavity, adjusting the gas pressure stabilizer to block the supply of the hydrogen until the voltage of a fuel cell stack is lower than the set voltage, opening the control valve, dividing the air supplied by the air supplier into two paths in the second gas pipeline, and introducing one path of air into the hydrogen cavity after sequentially flowing through an air branch, the control valve, the gas pressure stabilizer and the first gas pipeline to discharge the water in the hydrogen cavity; the other path is directly led into the cavity through a second gas pipeline so as to discharge water in the cavity.
The collection of the stack voltage of the fuel cell is the self-carried function of the conventional fuel cell; when the atmospheric temperature is lower than the set temperature, if the gas pressure stabilizer is directly adjusted to block the supply of the hydrogen and open the control valve, the hydrogen cavity still has the hydrogen with certain concentration, and the air supplied by the air supplier enters the hydrogen cavity, the residual hydrogen can be directly discharged into the atmosphere, so that the loss of the hydrogen is caused; therefore, when the atmospheric temperature is lower than the set temperature, the hydrogen in the hydrogen cavity is fully utilized, after the voltage of the electric pile of the fuel cell is lower than the set voltage, the concentration of the hydrogen in the hydrogen cavity is lower, the gas pressure stabilizer is adjusted to block the supply of the hydrogen and open the control valve, so that the air supplied by the air supplier enters the hydrogen cavity to discharge the water in the hydrogen cavity.
Preferably, the set temperature is-5 to 5 ℃, for example, -5 ℃, -4 ℃, -3 ℃, -2 ℃, -1 ℃, 0 ℃,1 ℃, 2 ℃, 3 ℃, 4 ℃ or 5 ℃, but not limited to the values listed, other values not listed within this range of values are equally applicable, preferably 0 ℃.
Preferably, the set voltage is 0.1 to 0.3V, and may be, for example, 0.1V, 0.12V, 0.14V, 0.16V, 0.18V, 0.2V, 0.22V, 0.24V, 0.26V, 0.28V or 0.3V, but is not limited to the values recited, and other values not recited within this range of values are equally applicable, preferably 0.2V.
As a preferred embodiment of the present invention, the hydrogen utilization optimizing method includes:
if the atmospheric temperature is lower than-5 ℃, adjusting a gas pressure stabilizer to open the supply of hydrogen, closing a control valve, stabilizing the pressure of the hydrogen supplied by a hydrogen storage device by the gas pressure stabilizer, then introducing the hydrogen into a hydrogen cavity to discharge water in the hydrogen cavity, cooling the air supplied by an air compressor by an intercooler, then introducing the air into the cavity to discharge the water in the cavity, adjusting the gas pressure stabilizer to block the supply of the hydrogen until the voltage of a cell stack of the fuel cell is lower than 0.1-0.3V, opening the control valve, cooling the air supplied by the air compressor in the intercooler arranged on a second gas pipeline, then dividing the air into two paths, and introducing the one path into the hydrogen cavity after sequentially flowing through an air branch, a one-way valve, the control valve, the gas pressure stabilizer and a first gas pipeline to discharge the water in the hydrogen cavity; the other path is directly introduced into the cavity through a second gas pipeline so as to discharge water in the cavity;
if the atmospheric temperature is not lower than-5 ℃, adjusting the gas pressure stabilizer to open the supply of the hydrogen, closing the control valve, leading the hydrogen supplied by the hydrogen storage into the hydrogen cavity after the pressure of the hydrogen is stabilized by the gas pressure stabilizer to discharge the water in the hydrogen cavity, and leading the air supplied by the air compressor into the cavity after the air is cooled by the intercooler to discharge the water in the cavity.
The system of the invention refers to a facility system, an apparatus system or a production apparatus.
Compared with the prior art, the invention has the following beneficial effects:
the fuel cell hydrogen utilization optimizing system provided by the invention can optimize the hydrogen cavity purging logic in a low-temperature state, and during low-temperature purging, air supplied by the air supplier enters the first gas pipeline through the air branch and finally passes through the hydrogen cavity to replace hydrogen used in the low-temperature purging process, so that the hydrogen loss is reduced, the hydrogen utilization rate is improved, and the cruising mileage of a fuel cell automobile is improved.
Drawings
Fig. 1 is a schematic structural diagram of a fuel cell hydrogen utilization optimization system according to an embodiment of the present invention.
Wherein, 1-hydrogen cavity; 2-a cavity; 3-a hydrogen gas supply; 4-an air supply; 5-air branch; 6-a control valve; 7-an intercooler; 8-one-way valve.
Detailed Description
It is to be understood that in the description of the present invention, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
It should be noted that, unless explicitly stated or limited otherwise, the terms "disposed," "connected" and "connected" in the description of the present invention are to be construed broadly and may include, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
It should be understood by those skilled in the art that the present invention necessarily includes necessary piping, conventional valves and general pump equipment for achieving the complete process, but the above contents do not belong to the main innovation points of the present invention, and those skilled in the art can select the layout of the additional equipment based on the process flow and the equipment structure, and the present invention is not particularly limited to this.
The technical solution of the present invention is further explained by the following embodiments. It should be understood by those skilled in the art that the examples are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.
In one embodiment, as shown in fig. 1, the present invention provides a fuel cell hydrogen utilization optimizing system, which includes a fuel cell, the fuel cell includes a hydrogen chamber 1 and a cavity 2, the hydrogen chamber 1 is communicated with a hydrogen gas supplier 3 through a first gas pipeline, the cavity 2 is communicated with an air supplier 4 through a second gas pipeline, a gas regulator is disposed on the first gas pipeline, an air branch 5 is disposed on the second gas pipeline, the air branch 5 is connected to an air inlet of the gas regulator, and a control valve 6 is disposed on the air branch 5.
The gas pressure stabilizer is provided with a hydrogen inlet and an air inlet respectively, a hydrogen supplier 3 is communicated to the hydrogen inlet of the gas pressure stabilizer through a first gas pipeline, an air branch 5 is communicated to the air inlet, the gas pressure stabilizer is provided with a gas outlet, and the gas outlet is communicated to a hydrogen cavity 1 through the first gas pipeline.
The control valve 6 according to the invention comprises a bypass valve.
The fuel cell hydrogen utilization optimizing system provided by the invention also has the function of detecting the atmospheric temperature, and when the atmospheric temperature is lower than the set temperature, the control valve 6 is opened to enable the air supplied by the air supplier 4 to enter the first gas pipeline from the air branch 5; when the atmospheric temperature is higher than the set temperature, the control valve 6 is closed to prevent the air supplied from the air supply 4 from entering the first air line through the air branch 5.
The fuel cell hydrogen utilization optimizing system provided by the invention can optimize the purging logic of the hydrogen cavity 1 in a low-temperature state, and during low-temperature purging, air supplied by the air supplier 4 enters the first gas pipeline through the air branch 5 and finally passes through the hydrogen cavity 1 to replace hydrogen used in the low-temperature purging process, so that the hydrogen loss is reduced, the hydrogen utilization rate is improved, and the cruising mileage of a fuel cell automobile is improved.
Further, an intercooler 7 is arranged on the second gas pipeline, a branch outlet is arranged on the intercooler 7, and the branch outlet is communicated to the air branch 5.
The intercooler 7 is provided with a gas inlet, the air supplier 4 is communicated to a hydrogen inlet of the intercooler 7 through a second gas pipeline, the intercooler 7 is respectively provided with an air outlet and a branch outlet, the air outlet is communicated to the cavity 2 through the second gas pipeline, and the branch outlet is communicated to the air branch 5.
The intercooler 7 is used for cooling the air supplied by the air supplier 4 and realizing the diversion of the cooled air.
Further, a check valve 8 is arranged on the air branch 5 between the control valve 6 and the intercooler 7.
The check valve 8 is used for controlling the unidirectional flow of gas and preventing the gas in the first gas pipeline from reversely flowing to the second gas pipeline.
Further, the aperture of the air branch 5 is not smaller than the aperture of the first gas pipeline.
Further, the caliber of the air branch 5 is equal to that of the first gas pipeline.
Further, the maximum pressure value of the control valve 6 is not less than twice the pressure value of the hydrogen chamber 1 under the rated operation condition of the fuel cell.
Further, the maximum pressure value of the control valve 6 is twice the maximum pressure value of the hydrogen chamber 1 under the rated working condition of the fuel cell.
Further, the maximum pressure value of the check valve 8 is not less than three times of the pressure value of the first gas pipeline under the rated working condition of the fuel cell.
Further, the maximum pressure value of the check valve 8 is equal to three times the pressure value of the first gas line under the rated operating condition of the fuel cell.
Further, the hydrogen supply 3 includes a hydrogen reservoir.
Further, the air supplier 4 includes an air compressor.
In a second aspect, the present invention provides a hydrogen utilization optimizing method using the fuel cell hydrogen utilization optimizing system of the first aspect, the hydrogen utilization optimizing method comprising:
if the atmospheric temperature is lower than the set temperature, adjusting the gas pressure stabilizer to block the supply of the hydrogen, opening the control valve 6, dividing the air supplied by the air supplier 4 into two paths in a second gas pipeline, wherein one path sequentially flows through the air branch 5, the control valve 6, the gas pressure stabilizer and the first gas pipeline and then is introduced into the hydrogen cavity 1 to discharge the water in the hydrogen cavity 1; the other path is directly led into the cavity 2 through a second gas pipeline so as to discharge the water in the cavity 2.
According to the hydrogen utilization optimization method provided by the invention, when the atmospheric temperature is lower than the set temperature, the supply of hydrogen is blocked, the air supplied by the air supplier 4 is used for discharging the water in the cavity 2, and meanwhile, the air supplied by the air supplier 4 is used for replacing the hydrogen used in the purging process to discharge the water in the hydrogen cavity 1, so that the hydrogen consumption in the low-temperature purging process is reduced, and the hydrogen utilization rate is improved.
Further, the hydrogen utilization optimization method includes:
if the atmospheric temperature is lower than the set temperature, adjusting a gas pressure stabilizer to open the supply of hydrogen, closing a control valve 6, introducing the hydrogen into a hydrogen cavity 1 through a first gas pipeline by a hydrogen supplier 3 to discharge water in the hydrogen cavity 1, introducing air into a cavity 2 through a second gas pipeline by an air supplier 4 to discharge water in the cavity 2, adjusting the gas pressure stabilizer to block the supply of the hydrogen until the voltage of a galvanic pile of the fuel cell is lower than the set voltage, opening the control valve 6, dividing the air supplied by the air supplier 4 into two paths in the second gas pipeline, and introducing the one path into the hydrogen cavity 1 after sequentially flowing through an air branch 5, the control valve 6, the gas pressure stabilizer and the first gas pipeline to discharge the water in the hydrogen cavity 1; the other path is directly led into the cavity 2 through a second gas pipeline so as to discharge the water in the cavity 2.
The acquisition of the stack voltage of the fuel cell is the self-carried function of the conventional fuel cell; when the atmospheric temperature is lower than the set temperature, if the gas pressure stabilizer is directly adjusted to block the supply of hydrogen and open the control valve 6, the hydrogen cavity 1 still has hydrogen with a certain concentration, and the air supplied by the air supplier 4 enters the hydrogen cavity 1, the residual hydrogen can be directly discharged to the atmosphere, so that the loss of the hydrogen is caused; therefore, when the atmospheric temperature is lower than the set temperature, the hydrogen in the hydrogen cavity 1 is fully utilized, after the voltage of the fuel cell stack is lower than the set voltage, the hydrogen concentration in the hydrogen cavity 1 is lower, the gas regulator is adjusted to stop the supply of the hydrogen and open the control valve 6, so that the air supplied by the air supplier 4 enters the hydrogen cavity 1, and the water in the hydrogen cavity 1 is discharged.
Further, the set temperature is-5 to 5 ℃, and is exemplarily 0 ℃.
Further, the set voltage is 0.1 to 0.3V, and is exemplarily 0.2V.
Further, the hydrogen utilization optimization method includes:
if the atmospheric temperature is lower than-5 ℃, adjusting a gas pressure stabilizer to open the supply of hydrogen, closing a control valve 6, stabilizing the pressure of the hydrogen supplied by a hydrogen storage device by the gas pressure stabilizer, then introducing the hydrogen into a hydrogen cavity 1 to discharge water in the hydrogen cavity 1, cooling the air supplied by an air compressor by an intercooler 7, then introducing the air into a cavity 2 to discharge the water in the cavity 2, adjusting the gas pressure stabilizer to block the supply of the hydrogen until the voltage of a cell stack of the fuel cell is lower than 0.1-0.3V, opening the control valve 6, cooling the air supplied by the air compressor in the intercooler 7 arranged on a second gas pipeline, then dividing the air into two paths, and introducing the one path into the hydrogen cavity 1 after sequentially passing through an air branch 5, a one-way valve 8, the control valve 6, the gas pressure stabilizer and a first gas pipeline to discharge the water in the hydrogen cavity 1; the other path is directly led into the cavity 2 through a second gas pipeline to discharge water in the cavity 2;
if the atmospheric temperature is not lower than-5 ℃, adjusting the gas pressure stabilizer to open the supply of the hydrogen, closing the control valve 6, leading the hydrogen supplied by the hydrogen storage device into the hydrogen cavity 1 after the hydrogen is subjected to pressure stabilization by the gas pressure stabilizer to discharge water in the hydrogen cavity 1, and leading the air supplied by the air compressor into the cavity 2 after the air is cooled by the intercooler 7 to discharge the water in the cavity 2.
The system of the invention refers to a facility system, an apparatus system or a production apparatus.
Examples
The embodiment provides a fuel cell hydrogen utilization optimizing system as shown in fig. 1, the fuel cell hydrogen utilization optimizing system includes a fuel cell, the fuel cell includes a hydrogen cavity 1 and a cavity 2, the hydrogen cavity 1 is communicated with a hydrogen storage through a first gas pipeline, the cavity 2 is communicated with an air compressor through a second gas pipeline, a gas pressure stabilizer is arranged on the first gas pipeline, an intercooler 7 is arranged on the second gas pipeline, a branch outlet is arranged on the intercooler 7 and communicated to an air branch 5, the air branch 5 is connected to an air inlet of the gas pressure stabilizer, a bypass valve is arranged on the air branch 5, a check valve 8 is arranged on the air branch 5 between the bypass valve and the intercooler 7, the caliber of the air branch 5 is equal to that of the first gas pipeline, the maximum pressure value of the bypass valve is twice the pressure value of the hydrogen cavity 1 under the rated working condition of the fuel cell, and the maximum pressure value of the check valve 8 is equal to three times the pressure value of the first gas pipeline under the rated working condition of the fuel cell.
Application example 1
The present application example provides a hydrogen utilization optimization method of the fuel cell hydrogen utilization optimization system in the above embodiment, the hydrogen utilization optimization method including:
if the atmospheric temperature is lower than 0 ℃, adjusting a gas pressure stabilizer to open the supply of hydrogen, closing a bypass valve, stabilizing the pressure of the hydrogen supplied by a hydrogen storage device through the gas pressure stabilizer, then introducing the hydrogen into a hydrogen cavity 1 to discharge water in the hydrogen cavity 1, cooling the air supplied by an air compressor through an intercooler 7, then introducing the air into a cavity 2 to discharge the water in the cavity 2, adjusting the gas pressure stabilizer to block the supply of the hydrogen until the voltage of a cell stack of the fuel cell is lower than 0.2V, opening the bypass valve, cooling the air supplied by the air compressor in the intercooler 7 arranged on a second gas pipeline, then dividing the air into two paths, introducing the air into the hydrogen cavity 1 after passing through an air branch 5, a one-way valve 8, the bypass valve, the gas pressure stabilizer and a first gas pipeline in sequence, and discharging the water in the hydrogen cavity 1; the other path is directly led into the cavity 2 through a second gas pipeline so as to discharge water in the cavity 2;
if the atmospheric temperature is not lower than 0 ℃, adjusting the gas pressure stabilizer to open the supply of hydrogen, closing the bypass valve, leading the hydrogen supplied by the hydrogen storage into the hydrogen cavity 1 after the hydrogen is subjected to pressure stabilization by the gas pressure stabilizer so as to discharge water in the hydrogen cavity 1, and leading the air supplied by the air compressor into the cavity 2 after the air is cooled by the intercooler 7 so as to discharge the water in the cavity 2.
Application example 2
The present application example provides a hydrogen utilization optimization method of the fuel cell hydrogen utilization optimization system in the above embodiment, the hydrogen utilization optimization method including:
if the atmospheric temperature is lower than-5 ℃, adjusting a gas pressure stabilizer to open the supply of hydrogen, closing a bypass valve, stabilizing the pressure of the hydrogen supplied by a hydrogen storage device through the gas pressure stabilizer, then introducing the hydrogen into a hydrogen cavity 1 to discharge water in the hydrogen cavity 1, cooling the air supplied by an air compressor through an intercooler 7, then introducing the air into a cavity 2 to discharge the water in the cavity 2, adjusting the gas pressure stabilizer to block the supply of the hydrogen until the voltage of a cell stack of the fuel cell is lower than 0.1V, opening the bypass valve, cooling the air supplied by the air compressor in the intercooler 7 arranged on a second gas pipeline, then dividing the air into two paths, introducing the air into the hydrogen cavity 1 after passing through an air branch 5, a one-way valve 8, the bypass valve, the gas pressure stabilizer and a first gas pipeline in sequence, and discharging the water in the hydrogen cavity 1; the other path is directly led into the cavity 2 through a second gas pipeline so as to discharge water in the cavity 2;
if the atmospheric temperature is not lower than-5 ℃, adjusting the gas pressure stabilizer to open the supply of hydrogen, closing the bypass valve, leading the hydrogen supplied by the hydrogen storage into the hydrogen cavity 1 after the hydrogen is subjected to pressure stabilization by the gas pressure stabilizer so as to discharge water in the hydrogen cavity 1, and leading the air supplied by the air compressor into the cavity 2 after the air is cooled by the intercooler 7 so as to discharge the water in the cavity 2.
Application example 3
The present application example provides a hydrogen utilization optimizing method of the fuel cell hydrogen utilization optimizing system in the above embodiment, the hydrogen utilization optimizing method including:
if the atmospheric temperature is lower than 5 ℃, adjusting a gas pressure stabilizer to open the supply of hydrogen, closing a bypass valve, stabilizing the pressure of the hydrogen supplied by a hydrogen storage device through the gas pressure stabilizer, then introducing the hydrogen into a hydrogen cavity 1 to discharge water in the hydrogen cavity 1, cooling the air supplied by an air compressor through an intercooler 7, then introducing the air into a cavity 2 to discharge the water in the cavity 2, adjusting the gas pressure stabilizer to block the supply of the hydrogen until the voltage of a cell stack of the fuel cell is lower than 0.3V, opening the bypass valve, cooling the air supplied by the air compressor in the intercooler 7 arranged on a second gas pipeline, then dividing the air into two paths, introducing the air into the hydrogen cavity 1 after passing through an air branch 5, a one-way valve 8, the bypass valve, the gas pressure stabilizer and a first gas pipeline in sequence, and discharging the water in the hydrogen cavity 1; the other path is directly led into the cavity 2 through a second gas pipeline so as to discharge water in the cavity 2;
if the atmospheric temperature is not lower than 5 ℃, adjusting the gas pressure stabilizer to open the supply of hydrogen, closing the bypass valve, leading the hydrogen supplied by the hydrogen storage into the hydrogen cavity 1 after the hydrogen is subjected to pressure stabilization by the gas pressure stabilizer so as to discharge water in the hydrogen cavity 1, and leading the air supplied by the air compressor into the cavity 2 after the air is cooled by the intercooler 7 so as to discharge the water in the cavity 2.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the protection scope and the disclosure of the present invention.
Claims (10)
1. The utility model provides a fuel cell hydrogen utilizes optimizing system, its characterized in that, fuel cell hydrogen utilizes optimizing system includes fuel cell, fuel cell includes hydrogen chamber and cavity, the hydrogen chamber is through first gas pipeline and hydrogen supplier intercommunication, the cavity passes through second gas pipeline and air supplier intercommunication, be provided with gaseous stabiliser on the first gas pipeline, be provided with the air branch road on the second gas pipeline, the air branch road is connected to the air inlet of gaseous stabiliser, be provided with the control valve on the air branch road.
2. The fuel cell hydrogen utilization optimization system of claim 1, wherein an intercooler is disposed on the second gas line, and a bypass outlet is disposed on the intercooler and is connected to the air bypass.
3. The fuel cell hydrogen utilization optimizing system of claim 2, wherein a check valve is provided on an air branch between the control valve and the intercooler.
4. The fuel cell hydrogen utilization optimizing system according to any one of claims 1 to 3, wherein the caliber of the air branch is not smaller than the caliber of the first gas pipe;
preferably, the aperture of the air branch is equal to the aperture of the first gas pipeline.
5. The fuel cell hydrogen utilization optimizing system according to any one of claims 1 to 4, wherein a maximum pressure value of the control valve is not less than twice a pressure value of the hydrogen chamber under a rated operation condition of the fuel cell;
preferably, the maximum pressure value of the control valve is twice the maximum pressure value of the hydrogen cavity under the rated working condition of the fuel cell.
6. The fuel cell hydrogen utilization optimization system of claim 3, wherein the maximum pressure value of the check valve is no less than three times the pressure value of the first gas line at the rated operating condition of the fuel cell;
preferably, the maximum pressure value of the check valve is equal to three times the pressure value of the first gas pipeline under the rated working condition of the fuel cell.
7. The fuel cell hydrogen utilization optimizing system according to any one of claims 1 to 6, wherein the hydrogen gas supplier includes a hydrogen gas reservoir;
preferably, the air supplier includes an air compressor.
8. A hydrogen utilization optimizing method using the fuel cell hydrogen utilization optimizing system according to any one of claims 1 to 7, characterized by comprising:
if the atmospheric temperature is lower than the set temperature, adjusting the gas pressure stabilizer to block the supply of hydrogen, opening the control valve, dividing the air supplied by the air supplier into two paths in the second gas pipeline, wherein one path sequentially flows through the air branch, the control valve, the gas pressure stabilizer and the first gas pipeline and then is introduced into the hydrogen cavity to discharge water in the hydrogen cavity; the other path is directly led into the cavity through a second gas pipeline so as to discharge water in the cavity.
9. The hydrogen utilization optimization method of claim 8, comprising:
if the atmospheric temperature is lower than the set temperature, adjusting a gas pressure stabilizer to open the supply of hydrogen, closing a control valve, introducing the hydrogen into a hydrogen cavity through a first gas pipeline by a hydrogen supplier to discharge water in the hydrogen cavity, introducing air into the cavity through a second gas pipeline by an air supplier to discharge the water in the cavity, adjusting the gas pressure stabilizer to block the supply of the hydrogen until the voltage of a galvanic pile of the fuel cell is lower than the set voltage, opening the control valve, dividing the air supplied by the air supplier into two paths in the second gas pipeline, and introducing the one path into the hydrogen cavity after sequentially flowing through an air branch, the control valve, the gas pressure stabilizer and the first gas pipeline to discharge the water in the hydrogen cavity; the other path is directly introduced into the cavity through a second gas pipeline so as to discharge water in the cavity;
preferably, the set temperature is-5 to 5 ℃, and is preferably 0 ℃;
preferably, the set voltage is 0.1 to 0.3V, preferably 0.2V.
10. The hydrogen utilization optimization method according to claim 8 or 9, characterized in that the hydrogen utilization optimization method includes:
if the atmospheric temperature is lower than-5 ℃, adjusting a gas pressure stabilizer to open the supply of hydrogen, closing a control valve, stabilizing the pressure of the hydrogen supplied by a hydrogen storage device by the gas pressure stabilizer, then introducing the hydrogen into a hydrogen cavity to discharge water in the hydrogen cavity, cooling the air supplied by an air compressor by an intercooler, then introducing the air into the cavity to discharge the water in the cavity, adjusting the gas pressure stabilizer to block the supply of the hydrogen until the voltage of a cell stack of the fuel cell is lower than 0.1-0.3V, opening the control valve, cooling the air supplied by the air compressor in the intercooler arranged on a second gas pipeline, then dividing the air into two paths, and introducing the one path into the hydrogen cavity after sequentially flowing through an air branch, a one-way valve, the control valve, the gas pressure stabilizer and a first gas pipeline to discharge the water in the hydrogen cavity; the other path is directly led into the cavity through a second gas pipeline to discharge water in the cavity;
if the atmospheric temperature is not lower than-5 ℃, adjusting the gas pressure stabilizer to open the supply of the hydrogen, closing the control valve, leading the hydrogen supplied by the hydrogen storage device into the hydrogen cavity after the pressure of the hydrogen is stabilized by the gas pressure stabilizer to discharge water in the hydrogen cavity, and leading the air supplied by the air compressor into the cavity after the air is cooled by the intercooler to discharge the water in the cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211716412.6A CN115939454B (en) | 2022-12-29 | 2022-12-29 | Hydrogen utilization optimization system and hydrogen utilization optimization method for fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211716412.6A CN115939454B (en) | 2022-12-29 | 2022-12-29 | Hydrogen utilization optimization system and hydrogen utilization optimization method for fuel cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115939454A true CN115939454A (en) | 2023-04-07 |
| CN115939454B CN115939454B (en) | 2024-02-20 |
Family
ID=86555912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211716412.6A Active CN115939454B (en) | 2022-12-29 | 2022-12-29 | Hydrogen utilization optimization system and hydrogen utilization optimization method for fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115939454B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111668520A (en) * | 2020-06-18 | 2020-09-15 | 上海电气集团股份有限公司 | Fuel cell system and shutdown control method thereof |
| CN113224354A (en) * | 2021-03-23 | 2021-08-06 | 武汉海亿新能源科技有限公司 | Dehydration and drying control method for low-temperature hydrogen storage path of fuel cell in winter |
| CN113381043A (en) * | 2021-05-28 | 2021-09-10 | 上海申风投资管理有限公司 | Air supply system of fuel cell |
-
2022
- 2022-12-29 CN CN202211716412.6A patent/CN115939454B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111668520A (en) * | 2020-06-18 | 2020-09-15 | 上海电气集团股份有限公司 | Fuel cell system and shutdown control method thereof |
| CN113224354A (en) * | 2021-03-23 | 2021-08-06 | 武汉海亿新能源科技有限公司 | Dehydration and drying control method for low-temperature hydrogen storage path of fuel cell in winter |
| CN113381043A (en) * | 2021-05-28 | 2021-09-10 | 上海申风投资管理有限公司 | Air supply system of fuel cell |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115939454B (en) | 2024-02-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7040109B2 (en) | Fuel cell system and method of storing hydrogen | |
| US8795917B2 (en) | Fuel cell system with control of the pressure of the reactants within the system | |
| US11322762B2 (en) | Fuel cell system | |
| KR101955893B1 (en) | Method for removing precipitation of redox flow battery and redox flow battery including the method | |
| CN207409592U (en) | Fuel cell system hydrogen supply device | |
| CN113097535B (en) | Water heat management system of self-humidifying fuel cell and control method thereof | |
| CN107634247A (en) | Fuel cell system hydrogen supply device | |
| CN103579643A (en) | Fuel cell system, parking discharge control method and use of fuel cell system | |
| CN113488678B (en) | Hydrogen supply system of fuel cell vehicle | |
| CN110649283A (en) | Fuel cell system and low-temperature starting method thereof | |
| CN115036540B (en) | Fuel cell system shutdown method | |
| CN113471477A (en) | Fuel cell cooling water loop temperature control system and control method thereof | |
| CN113839066A (en) | Multi-pile integrated long-life fuel cell system | |
| CN215496804U (en) | Hydrogen supply system for fuel cell | |
| CN106887616B (en) | Fuel cell cold start system and method based on liquid organic hydrogen storage | |
| CN115939454B (en) | Hydrogen utilization optimization system and hydrogen utilization optimization method for fuel cell | |
| CN112820908A (en) | Normal shutdown method for hydrogen fuel cell system | |
| CN110247082B (en) | Hydrogen supply system of fuel cell | |
| CN219409923U (en) | PEM electrolytic tank waste heat utilization system | |
| CN112909299B (en) | Air-cooled fuel cell hydrogen supply system and control method | |
| CN114388850B (en) | Efficient purging system for fuel cell and control method thereof | |
| CN213304184U (en) | Proton exchange membrane fuel cell purging system | |
| CN112993326B (en) | Fuel cell and proton exchange membrane protection method | |
| JP2010153067A (en) | Fuel cell system | |
| CN115050999B (en) | Fuel cell system and low temperature shutdown process thereof |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |