CN111755721B - Tail drainage collecting and atomizing device of fuel cell automobile and control method - Google Patents
Tail drainage collecting and atomizing device of fuel cell automobile and control method Download PDFInfo
- Publication number
- CN111755721B CN111755721B CN202010350433.5A CN202010350433A CN111755721B CN 111755721 B CN111755721 B CN 111755721B CN 202010350433 A CN202010350433 A CN 202010350433A CN 111755721 B CN111755721 B CN 111755721B
- Authority
- CN
- China
- Prior art keywords
- water
- drainage
- fuel cell
- storage tank
- assembly
- 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.)
- Active
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 174
- 238000000889 atomisation Methods 0.000 claims abstract description 23
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 230000003111 delayed effect Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000000151 anti-reflux effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0662—Treatment of gaseous reactants or gaseous residues, e.g. cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/70—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by fuel cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04701—Temperature
- H01M8/04716—Temperature of fuel cell exhausts
-
- 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
- H01M8/04746—Pressure; Flow
- H01M8/04753—Pressure; Flow of fuel cell reactants
-
- 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
- H01M8/04858—Electric variables
- H01M8/04895—Current
- H01M8/0491—Current of fuel cell stacks
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
Landscapes
- Engineering & Computer Science (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Fuel Cell (AREA)
Abstract
The application provides a fuel cell automobile tail drainage collecting and atomizing device and a control method, wherein the device comprises a water storage tank body, a water inlet pipe, a drainage assembly, an atomizing assembly, an exhaust assembly and a controller, wherein the water inlet pipe, the drainage assembly, the atomizing assembly, the exhaust assembly and the controller are communicated with the water storage tank body; the water inlet pipe is connected with a water outlet pipe of the fuel cell; the exhaust component is used for exhausting the water vapor mixed in the tail drainage of the fuel cell to the outside of the water storage tank; the atomization assembly is used for atomizing the tail drainage of the fuel cell in the water storage tank body and discharging the tail drainage to the outside of the water storage tank body; the exhaust assembly is arranged above the drainage assembly and the atomization assembly. The tail drainage collecting and atomizing device for the fuel cell automobile reasonably collects and discharges the tail drainage, and solves the problem that the tail drainage directly flows to the ground to cause accumulated water on the road surface of the area to freeze when the fuel cell automobile is parked at a traffic light intersection in winter.
Description
Technical Field
The application belongs to the field of fuel cells, and particularly relates to a fuel cell automobile tail drainage collecting and atomizing device and a control method.
Background
The emission product of hydrogen fuel cell automobiles is water only, and the characteristic of zero pollution is a main reason for the wide attention. The tail water of the fuel cell automobile comprises liquid water drops and water vapor, and the exhaust pipeline has a certain pressure. If a large number of fuel cell vehicles directly discharge tail water onto a road surface, freezing may occur at an ambient temperature below 0 ℃. Particularly, at the traffic light intersection, the past vehicles stop waiting or accelerate to start to discharge water to the road surface to cause accumulated water in the area to freeze, so that serious traffic safety hazards exist, and serious threats are formed on the life safety of the past pedestrians and vehicles.
Disclosure of Invention
In view of the above, the present application is directed to a fuel cell vehicle tail drain collecting and atomizing device and a control method thereof, in which tail drain is collected in a thermal insulation water storage tank without being discharged to a road surface during low speed and idle stop of a vehicle, and water collected during high speed of the vehicle is sprayed in an atomized form during running of the vehicle. The problem that the road surface water in the area is frozen due to the fact that the tail drainage directly flows to the ground when the fuel cell vehicle stops at a traffic light intersection for waiting or runs at a low speed in winter can be solved by reasonably collecting and discharging the tail drainage.
In order to achieve the above purpose, the technical scheme of the application is realized as follows:
the tail drainage collecting and atomizing device of the fuel cell automobile comprises a water storage tank body, a water inlet pipe, a drainage assembly, an atomizing assembly, an exhaust assembly and a controller, wherein the water inlet pipe, the drainage assembly, the atomizing assembly, the exhaust assembly and the controller are communicated with the water storage tank body;
the drainage assembly, the atomization assembly and the exhaust assembly are connected with the controller;
the water inlet pipe is connected with a water outlet pipe of the fuel cell;
the exhaust component is used for exhausting the water vapor mixed in the tail drainage of the fuel cell to the outside of the water storage tank;
the atomization assembly is used for atomizing the tail drainage of the fuel cell in the water storage tank body and discharging the tail drainage to the outside of the water storage tank body;
the exhaust assembly is arranged above the drainage assembly and the atomization assembly.
Further, the drainage assembly comprises a drainage pipe and a drainage electromagnetic valve, the drainage pipe is controlled to be opened and closed through the drainage electromagnetic valve, and the drainage electromagnetic valve is connected with the controller.
Further, the atomizing subassembly includes atomizer and atomizing nozzle, atomizer input and storage water tank body coupling, the output is connected with atomizing nozzle, the atomizer is connected with the controller.
Furthermore, a downward extending return pipe is arranged at the connection part of the output end of the atomizer and the atomizing nozzle, and the other end of the return pipe is connected with the water storage tank;
and one end of the return pipe, which is close to the water storage tank body, is also provided with an anti-backflow component.
Further, the exhaust assembly comprises an exhaust pipe, one end of the exhaust pipe is a connecting end used for being connected with the water storage tank body, and the other end of the exhaust pipe is an opening end;
an included angle alpha exists between the lower edge of the inner wall of the exhaust pipe and a horizontal line;
the height of the lower edge of the inner wall of the exhaust pipe, which is close to the opening end, is larger than that of the connecting end.
Further, the water storage tank body is provided with an exhaust port used for being connected with an exhaust assembly, and the exhaust port is provided with a metal net;
the metal net is a stainless steel metal net with 80 meshes.
Further, the water storage tank body is also provided with a low water level sensor and a high water level sensor which are connected with the signal input end of the controller;
the signal input end of the controller is also connected with a whole vehicle controller VCU, and CAN signals output by the VCU comprise vehicle speed information, outdoor temperature information and key gear information;
the signal input end of the controller is also connected with a pile temperature sensor, a current sensor, an air flow sensor and an air pressure sensor which are used for collecting the state information of the fuel cell;
the pile temperature sensorFor sensing the internal temperature T of the fuel cell fc ；
The current sensor is used for collecting the output current I of the fuel cell fc ；
The air flow sensor is used for collecting cathode inlet air flow N 2 ；
The air pressure sensor is used for collecting cathode air pressure P 2 。
Further, the control method of the fuel cell automobile tail drainage collecting and atomizing device comprises the following steps:
s1, a controller collects signals through a signal input end to judge whether the vehicle is powered down, and the power down is delayed T 1 After the time, the drainage electromagnetic valve is kept in a normally open state;
s2, acquiring an outdoor environment T by acquiring a CAN signal when the vehicle is not powered down 0 If T 0 Keeping the drainage electromagnetic valve in a normally open state at a temperature of more than or equal to 0 ℃, if T 0 Closing the drainage electromagnetic valve when the temperature is less than 0 ℃;
s3, judging whether the current vehicle speed V is greater than a preset speed threshold V or not by acquiring a CAN signal 0 If the pressure is not greater than the preset pressure, the atomizer and the drainage electromagnetic valve keep the current working state;
S4、V＞V 0 judging whether Q is larger than a preset maximum allowable value Q of the collected water max If the pressure is not greater than the preset pressure, the atomizer and the drainage electromagnetic valve keep the current working state;
S5、Q＞Q max judging whether the water production rate L of the fuel cell is greater than a preset water production rate threshold L of the fuel cell max ，L＞L max Then the atomizer is regulated to be in a high-power working mode, and L is less than or equal to L max The atomizer is adjusted to a low power mode of operation;
s6, judging whether Q is smaller than a preset minimum allowable value Q of the collected water quantity min If Q < Q min The atomizer is turned off, if Q is more than or equal to Q min The atomizer and the drainage solenoid valve are kept in the current working state.
Further, the method for calculating the water production rate L of the fuel cell in step S5 is as follows:
a1, according toThe thermodynamic water vapor characteristic Map obtains the water vapor partial pressure P in the current state 1 ；
A2 according to P 1 And P 2 Calculating the partial pressure ratio of water vapor to air
A3, calculating oxygen consumptionWherein F is Faraday constant;
a4, calculating air consumptionWhere r is the oxygen to air ratio, i.e. r=21%;
a5, calculating the air flow N=N of the taken away moisture 2 -N 1 ；
A6, calculating the water yield W=N epsilon of the carried water, wherein the water yield in unit time is the water yield rate L of the fuel cell.
Compared with the prior art, the fuel cell automobile tail drainage collecting and atomizing device and the control method have the following advantages:
(1) The tail drainage collecting and atomizing device and the control method for the fuel cell automobile can realize the functions of collecting and atomizing drainage of the tail drainage of the fuel cell according to different driving working conditions and outdoor temperatures, and prevent the tail drainage from being directly drained to the road surface in winter to cause accumulated water on the road surface to freeze.
(2) The tail drainage collecting and atomizing device and the control method of the fuel cell automobile can comprehensively judge the condition of the device entering the collecting or discharging function according to the outdoor temperature and the running working condition of the automobile, and adjust the atomizing discharging rate by calculating the water production rate of the fuel cell.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 is a schematic view of a device according to an embodiment of the present application;
FIG. 2 is a schematic view of a metal mesh according to an embodiment of the present application;
FIG. 3 is a schematic view of a structure of a box outlet according to an embodiment of the present application;
FIG. 4 is a schematic view of the working state of the atomizer according to the embodiment of the present application;
FIG. 5 is a schematic diagram illustrating the working state of a drain solenoid valve according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a control system according to an embodiment of the present application;
FIG. 7 is a schematic diagram of a fuel cell drain rate calculation method according to an embodiment of the present application;
fig. 8 is a schematic view of a workflow diagram according to an embodiment of the present application.
Reference numerals illustrate:
1-a water storage tank body; 2-a water inlet pipe; 3-a drain pipe; 4-a drainage solenoid valve; 5-atomizer; 6-atomizing nozzles; 7-exhaust pipe; 8-metal mesh; 9-a return pipe; 91-an anti-reflux assembly; 10-a low water level sensor; 11-high water level sensor.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art in a specific case.
The application will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1 to 8, a tail drainage collecting and atomizing device of a fuel cell vehicle comprises a water storage tank body 1, a water inlet pipe 2 communicated with the water storage tank body 1, a drainage assembly, an atomizing assembly, an exhaust assembly and a controller, wherein the water inlet pipe 2 is connected with a drain pipe 3 of the fuel cell, the exhaust assembly is used for discharging water vapor mixed in tail drainage of the fuel cell out of the water storage tank body 1, the atomizing assembly is used for atomizing tail drainage of the fuel cell in the water storage tank body 1 and discharging the atomized tail drainage out of the water storage tank body 1, and the exhaust assembly is arranged above the drainage assembly and the atomizing assembly.
The drainage assembly comprises a drainage pipe 3 and a drainage electromagnetic valve 4, the drainage pipe 3 is controlled to be opened and closed through the drainage electromagnetic valve 4, and the drainage electromagnetic valve 4 is connected with the controller.
The atomizing subassembly includes atomizer 5 and atomizing nozzle 6, atomizer 5 input is connected with storage water tank 1, and the output is connected with atomizing nozzle 6, and atomizer 5 is connected with the controller, atomizer 5 uses prior art, including but not limited to steam atomization, ultrasonic atomization and through the mode that realizes liquid water high pressure atomizing through the shower nozzle blowout to liquid water pressurized, etc. can realize converting liquid water into water smoke.
The connecting position of atomizer 5 output and atomizing nozzle 6 still is equipped with downwardly extending's back flow 9, the back flow 9 other end is connected with storage water tank 1, in the use, atomizer 5 or pressurized water pump atomize or pressurize tail drainage and discharge through atomizing nozzle 6, at the connecting position of retrieving atomizer 5 output and atomizing nozzle 6, can remain some because the condensation of contact atomizing nozzle 6 inner wall vapor, the unable smooth discharge through atomizing nozzle 6 of condensation vapor, and the condensation vapor is got rid of and is left to the car outside and can cause conditions such as road surface icing on the road surface, the setting of back flow 9 is used for retrieving the liquid water of remaining at the connecting position of atomizer 5 output and atomizing nozzle 6, reduce the influence that liquid water's existence produced the work of atomizing nozzle 6.
The backflow pipe 9 is further provided with an anti-backflow component 91 near one end of the water storage tank 1, and the anti-backflow component uses the existing components with the function of preventing water backflow, including but not limited to a stop valve, a water stop valve, a check valve, a one-way valve, a check valve for preventing water backflow, and the like.
The exhaust assembly comprises an exhaust pipe 7, one end of the exhaust pipe 7 is a connecting end used for being connected with the water storage tank 1, the other end of the exhaust pipe is an opening end, an included angle alpha exists between the lower edge of the inner wall of the exhaust pipe 7 and a horizontal line, and the height of the lower edge of the inner wall of the exhaust pipe 7, which is close to the opening end, is larger than that of the connecting end.
The water storage tank body 1 is provided with an exhaust port for connecting an exhaust assembly, and the exhaust port is provided with a metal net 8.
The metal net 8 is a stainless steel metal net with 80 meshes;
the water storage tank body 1 is also provided with a low water level sensor 10 and a high water level sensor 11 which are connected with the signal input end of the controller;
the signal input end of the controller is also connected with a whole vehicle controller VCU, and CAN signals output by the VCU comprise vehicle speed information, outdoor temperature information and key gear information;
the signal input end of the controller is also connected with a pile temperature sensor, a current sensor, an air flow sensor and an air pressure sensor which are used for acquiring the state information of the fuel cell;
the pile temperature sensor is used for collecting the internal temperature T of the fuel cell fc ；
The current sensor is used for collecting the output current I of the fuel cell fc ；
The air flow sensor is used for collecting cathode inlet air flow N 2 ；
The air pressure sensor is used for collecting cathode air pressure P 2 。
The control method of the fuel cell automobile tail drainage collecting and atomizing device comprises the following steps:
s1, a controller collects signals through a signal input end to judge whether the vehicle is powered down, and the power down is delayed T 1 After the time, the drainage electromagnetic valve 4 is kept in a normally open state;
s2, acquiring an outdoor environment T by acquiring a CAN signal when the vehicle is not powered down 0 If T 0 Keeping the drainage solenoid valve 4 in a normally open state at 0 ℃ or more, if T 0 Closing the drainage solenoid valve 4 when the temperature is lower than 0 ℃;
s3, judging whether the current vehicle speed V is greater than a preset speed threshold V or not by acquiring a CAN signal 0 If the pressure is not larger than the preset pressure, the atomizer 5 and the drainage electromagnetic valve 4 keep the current working state;
S4、V＞V 0 judging whether Q is larger than a preset maximum allowable value Q of the collected water max If the pressure is not larger than the preset pressure, the atomizer 5 and the drainage electromagnetic valve 4 keep the current working state;
S5、Q＞Q max judging whether the water production rate L of the fuel cell is greater than a preset water production rate threshold L of the fuel cell max ，L＞L max The atomizer 5 is regulated to a high-power working mode, and L is less than or equal to L max Then adjusting the atomizer 5 to a low power mode of operation;
s6, judging whether Q is smaller than a preset minimum allowable value Q of the collected water quantity min If Q < Q min The atomizer 5 is turned off, if Q is more than or equal to Q min The atomizer 5 and the drain solenoid valve 4 are kept in the current operating state.
The method for calculating the water production rate L of the fuel cell in the step S5 is as follows:
a1, obtaining the water vapor partial pressure P in the current state according to the thermodynamic water vapor characteristic Map 1 ；
A2 according to P 1 And P 2 Calculating the partial pressure ratio of water vapor to air
A3, calculating oxygen consumptionWherein F is Faraday constant;
a4, calculating air consumptionWhere r is the oxygen to air ratio, i.e. r=21%;
a5, calculating the air flow N=N of the taken away moisture 2 -N 1 ；
A6, calculating the water yield W=N epsilon of the carried water, wherein the water yield in unit time is the water yield rate L of the fuel cell.
In the first embodiment of the present application, as shown in fig. 1, the tail drain from the fuel cell stack is directly discharged into the water storage tank 1, the drain solenoid valve 4 below the water storage tank 1 is in a normally open state, and when the control system receives that the temperature acquired by the environmental temperature sensor of the vehicle is lower than the temperature T 0 When the temperature is recommended to be 0 ℃, the device closes the drainage electromagnetic valve 4, liquid small water drops with certain pressure and water vapor which enter a tail drainage collection mode and come out of the galvanic pile are discharged into the water storage tank body 1, and larger water drops in the liquid small water drops are dripped into the water storage tank body through gravity to be collected as shown by solid arrows in fig. 1. The water mist and the water vapor are directly discharged to the outside from the discharge outlet of the box body through the metal net 8 as shown by the dotted arrow in the figure, an included angle alpha exists between the lower edge of the discharge outlet of the box body and the horizontal line, the application recommends 5 degrees, the water drops condensed on the metal net and the inner wall are enabled to flow back into the box body, the structure of the discharge outlet of the box body is shown in the figure 3, the structure of the metal net is shown in the figure 2, and the application recommends 80-mesh stainless steel metal net. The water mist and water vapor are shown in figure 1The dotted arrow shows that the water is directly discharged from the air outlet of the water storage tank body 1 through the metal net 8, an included angle alpha is formed between the lower edge of the air outlet of the water storage tank body 1 and the horizontal line, and the preferable alpha=5 degrees, and the metal net 8 and the included angle alpha are arranged to enable the water drops condensed on the metal net 8 and the inner wall to flow back into the tank body.
In a second embodiment of the present application, as shown in FIG. 4, the current vehicle speed is greater than a certain speed threshold V 0 The threshold value can be obtained through real vehicle calibration, the application recommends 30km/h, and when the water storage liquid level in the water storage tank reaches the high water level sensor 11, the device calculates the water production rate by collecting the internal temperature of the fuel cell, the output current of the fuel cell, the air flow of the cathode inlet and the air pressure of the cathode, and when the water production rate is greater than a certain rate threshold value L of a set value max When the application recommends L max =1.6ml/s, and the current vehicle speed is greater than V 0 When the liquid level falls below the low water level sensor 10, the control device stops the atomizer 5.
In the third embodiment of the application, as shown in fig. 5, when the ambient temperature is higher than 0 ℃, the drainage electromagnetic valve 4 of the device is in a normally open state, tail drainage flows to the ground through the discharge port, the device is not started, and the vehicle is not influenced to be higher than T in the outdoor environment 0 And the tail water is discharged normally.
In a fourth embodiment of the present application, the vehicle device is powered down at time T after the vehicle is parked 1 The drainage electromagnetic valve 4 is opened to empty the water storage tank 1, the application recommends the time T 1 The residual water content of the device is prevented from freezing in a cold environment for 10 seconds.
The control system aspect of the present application is shown in fig. 6, which is a block diagram of a control system of a drainage collection and atomization drainage device, and shows the signal interaction relationship among an internal controller, an actuator and a sensor, wherein the controller needs to collect the internal temperature of the current fuel cell, the output current of the fuel cell, the air flow of the cathode inlet and the air pressure of the cathode at the same time, calculate the drainage amount of the fuel cell, perform logic judgment according to the current water production rate, the vehicle speed and the water level sensor signal, and send relevant control signals to the actuator to decide to enter the water collection or drainage function and adjust the drainage rate.
A fuel cell drain rate calculation method is shown in fig. 7. The device control part is based on the internal temperature T of the fuel cell fc And water vapor saturation characteristic Map, calculating water vapor partial pressure P in the current state 1 The current cathode air partial pressure P can be obtained according to the air pressure sensor 2 According to P 1 And P 2 The partial pressure ratio epsilon of water vapor and air can be obtained. The device control part outputs current I to the outside according to the fuel cell fc Calculating an air flow N for power generation 1 The air flow sensor measures the air flow N at the cathode inlet 2 ，N 2 -N 1 In order to take away the air flow N, N and epsilon of the water, the water quantity taken away in unit time is obtained through calculation, namely the water yield L of the fuel cell input drainage collection and atomization device.
As shown in fig. 8, the device operation mode determination flow control unit reads the CAN signal and each sensor signal, and determines whether the water generated by the fuel cell is atomized and discharged or stored as liquid water. When the following conditions are satisfied at the same time:
the collected water quantity is smaller than the maximum allowable value Q max Wherein Q is max The reference value is 1L, which is related to the detection of a liquid level signal by a high water level sensor of the device and the water storage volume in the current water storage tank;
minimum allowable value Q remaining in water tank min Wherein Q is min The reference value is 200mL, which is related to the detection of a liquid level signal by a low water level sensor of the device and the water storage volume in the current water storage tank;
the drainage rate is less than the maximum allowable value L max Wherein L is max The specific monitoring principle is as shown above, and the reference value is 1.6ml/s, which is related to the current state of the fuel cell;
the vehicle speed is smaller than the maximum allowable value V 0 Wherein V is 0 In relation to the driving situation of the vehicle, when the vehicle speed is lower than V 0 Consider that the vehicle is at a high probabilityAt a traffic intersection;
when the vehicle is electrified; the outdoor environment temperature is greater than T 0 The method comprises the steps of carrying out a first treatment on the surface of the The electromagnetic valve is used for closing the device to enter a collection mode, and the vehicle speed is less than or equal to V 0 And when the vehicle is considered to be in the crossroad with high probability, the atomization emission is not carried out.
When the vehicle is electrified; the outdoor environment temperature is greater than T 0 The method comprises the steps of carrying out a first treatment on the surface of the The speed of the vehicle is greater than V 0 The method comprises the steps of carrying out a first treatment on the surface of the The water storage capacity Q in the box is more than Q max The method comprises the steps of carrying out a first treatment on the surface of the When the water yield rate is L > L while meeting the above conditions max The device starts the water pump high-speed gear to perform high-speed atomization discharge. Otherwise, the low-speed gear is opened to carry out low-speed atomization discharge, and when the water storage quantity Q in the tank is smaller than Q min The method comprises the steps of carrying out a first treatment on the surface of the The device will shut off the water pump.
When the vehicle is powered down, the device delays for 10S, and then the electromagnetic valve is opened to normally enter an emptying mode.
When the vehicle is not in the power-down state, and the ambient temperature T 0 When the temperature is more than or equal to 0 ℃; the electromagnetic valve of the device is normally open. The device does not collect emissions.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the application.
Claims (6)
1. The utility model provides a fuel cell car tail drainage is collected and atomizing device which characterized in that: comprises a water storage tank body (1), a water inlet pipe (2) communicated with the water storage tank body (1), a water drainage component, an atomization component, an exhaust component and a controller;
the drainage assembly, the atomization assembly and the exhaust assembly are connected with the controller;
the water inlet pipe (2) is connected with a water outlet pipe (3) of the fuel cell;
the exhaust assembly is used for exhausting water vapor mixed in tail drainage of the fuel cell to the outside of the water storage tank body (1);
the atomization assembly is used for atomizing the tail drainage of the fuel cell in the water storage tank body (1) and discharging the tail drainage to the outside of the water storage tank body (1);
the exhaust assembly is arranged above the drainage assembly and the atomization assembly;
the drainage assembly comprises a drainage pipe (3) and a drainage electromagnetic valve (4), the drainage pipe (3) is controlled to be opened and closed through the drainage electromagnetic valve (4), and the drainage electromagnetic valve (4) is connected with the controller;
the atomization assembly comprises an atomizer (5) and an atomization nozzle (6), wherein the input end of the atomizer (5) is connected with the water storage tank body (1), and the output end of the atomizer is connected with the atomization nozzle (6);
the atomizer (5) is connected with the controller;
the water storage tank body (1) is also provided with a low water level sensor (10) and a high water level sensor (11) which are connected with the signal input end of the controller;
the signal input end of the controller is also connected with a whole vehicle controller VCU, and CAN signals output by the VCU comprise vehicle speed information, outdoor temperature information and key gear information;
the signal input end of the controller is also connected with a pile temperature sensor, a current sensor, an air flow sensor and an air pressure sensor which are used for acquiring the state information of the fuel cell;
the pile temperature sensor is used for collecting the internal temperature T of the fuel cell fc ；
The current sensor is used for collecting the output current I of the fuel cell fc ；
The air flow sensor is used for collecting cathode inlet air flow N 2 ；
The air pressure sensor is used for collecting cathode air pressure P 2 。
2. The fuel cell vehicle tail drain collection and atomization device of claim 1, wherein: the connection part of the output end of the atomizer (5) and the atomizing nozzle (6) is also provided with a return pipe (9) extending downwards, and the other end of the return pipe (9) is connected with the water storage tank body (1);
one end of the return pipe (9) close to the water storage tank body (1) is also provided with an anti-backflow component (91).
3. The fuel cell vehicle tail drain collection and atomization device of claim 1, wherein: the exhaust assembly comprises an exhaust pipe (7), one end of the exhaust pipe (7) is a connecting end used for being connected with the water storage tank body (1), and the other end of the exhaust pipe is an opening end;
an included angle alpha exists between the lower edge of the inner wall of the exhaust pipe (7) and a horizontal line;
the height of the lower edge of the inner wall of the exhaust pipe (7) close to the opening end is larger than that of the connecting end.
4. The fuel cell vehicle tail drain collection and atomization device of claim 1, wherein: the water storage tank body (1) is provided with an exhaust port used for connecting an exhaust assembly, and the exhaust port is provided with a metal net (8);
the metal net (8) is a stainless steel metal net (8) with 80 meshes.
5. The control method of the fuel cell automobile tail drainage collecting and atomizing device based on the method of claim 1 comprises the following steps:
s1, a controller collects signals through a signal input end to judge whether the vehicle is powered down, and the power down is delayed T 1 After the time, the drainage electromagnetic valve is kept in a normally open state;
s2, acquiring an outdoor environment T by acquiring a CAN signal when the vehicle is not powered down 0 If T 0 Keeping the drainage electromagnetic valve in a normally open state at a temperature of more than or equal to 0 ℃, if T 0 Closing the drainage electromagnetic valve when the temperature is less than 0 ℃;
s3, judging whether the current vehicle speed V is greater than a preset speed threshold V or not by acquiring a CAN signal 0 If the pressure is not greater than the preset pressure, the atomizer and the drainage electromagnetic valve keep the current working state;
S4、V＞V 0 judging whether Q is larger than a preset maximum allowable value Q of the collected water max If the pressure is not greater than the preset pressure, the atomizer and the drainage electromagnetic valve keep the current working state;
S5、Q＞Q max judging whether the water production rate L of the fuel cell is greater than a preset water production rate threshold L of the fuel cell max ，L＞L max Then the atomizer is regulated to be in a high-power working mode, and L is less than or equal to L max Then the atomizer is adjusted to operate at low powerA mode;
s6, judging whether Q is smaller than a preset minimum allowable value Q of the collected water quantity min If Q < Q min The atomizer is turned off, if Q is more than or equal to Q min The atomizer and the drainage solenoid valve are kept in the current working state.
6. The method for controlling a fuel cell vehicle tail drain collection and atomization device according to claim 5, wherein the method for calculating the water production rate L of the fuel cell in step S5 is as follows:
a1, obtaining the water vapor partial pressure P in the current state according to the thermodynamic water vapor characteristic Map 1 ；
A2 according to P 1 And P 2 Calculating the partial pressure ratio of water vapor to air
A3, calculating oxygen consumptionWherein F is Faraday constant;
a4, calculating air consumptionWhere r is the oxygen to air ratio, i.e. r=21%;
a5, calculating the air flow N=N of the taken away moisture 2 -N 1 ；
A6, calculating the water yield W=N epsilon of the carried water, wherein the water yield in unit time is the water yield rate L of the fuel cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010350433.5A CN111755721B (en) | 2020-04-28 | 2020-04-28 | Tail drainage collecting and atomizing device of fuel cell automobile and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010350433.5A CN111755721B (en) | 2020-04-28 | 2020-04-28 | Tail drainage collecting and atomizing device of fuel cell automobile and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111755721A CN111755721A (en) | 2020-10-09 |
| CN111755721B true CN111755721B (en) | 2023-11-10 |
Family
ID=72673341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010350433.5A Active CN111755721B (en) | 2020-04-28 | 2020-04-28 | Tail drainage collecting and atomizing device of fuel cell automobile and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111755721B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112164811A (en) * | 2020-10-30 | 2021-01-01 | 武汉格罗夫氢能汽车有限公司 | Fuel cell automobile tail gas water-vapor separation and discharge system and control method thereof |
| CN112843796B (en) * | 2020-12-25 | 2023-02-21 | 中国第一汽车股份有限公司 | Discharging device |
| CN114709450A (en) * | 2021-04-27 | 2022-07-05 | 长城汽车股份有限公司 | Air system of fuel cell and vehicle |
| CN114243058B (en) * | 2021-11-08 | 2023-07-18 | 东风汽车集团股份有限公司 | Fuel cell system, gas-liquid separation device, control method and control device thereof |
| CN114347865B (en) * | 2022-03-18 | 2022-05-31 | 北汽福田汽车股份有限公司 | Method and device for controlling fuel cell system, medium, electronic device, and vehicle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111063916A (en) * | 2019-12-27 | 2020-04-24 | 电子科技大学 | Fuel cell anode water management system and control method |
| CN212277252U (en) * | 2020-04-28 | 2021-01-01 | 中国汽车技术研究中心有限公司 | Fuel cell automobile tail drainage collecting and atomizing device |
-
2020
- 2020-04-28 CN CN202010350433.5A patent/CN111755721B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111063916A (en) * | 2019-12-27 | 2020-04-24 | 电子科技大学 | Fuel cell anode water management system and control method |
| CN212277252U (en) * | 2020-04-28 | 2021-01-01 | 中国汽车技术研究中心有限公司 | Fuel cell automobile tail drainage collecting and atomizing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111755721A (en) | 2020-10-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111755721B (en) | Tail drainage collecting and atomizing device of fuel cell automobile and control method | |
| CN212277252U (en) | Fuel cell automobile tail drainage collecting and atomizing device | |
| CN202008210U (en) | Self-cleaning efficient automobile air conditioner system | |
| CN108448135A (en) | Fuel cell system | |
| CN104555156A (en) | Humidification system for land transportation refrigerated container and implementation method for humidification system | |
| CN210652705U (en) | Fuel cell drainage device and fuel cell automobile | |
| CN115133086A (en) | Tail water discharge treatment device for fuel cell engine | |
| CN108791030A (en) | Road surface dust suppression system and hydrogen cell automobile for hydrogen cell automobile | |
| CN101204960A (en) | Railroad coach tank system water pump hydropenia protected controlled device and method | |
| CN107559079A (en) | Diesel engine post-processing system | |
| CN205001052U (en) | Heat abstractor is assisted to car waste water reclamation | |
| CN201062855Y (en) | Processor for air conditioner condenser water | |
| CN213273165U (en) | Air conditioner condensate water recovery clearing device for vehicle and rail vehicle | |
| CN109910552A (en) | Bus air conditioner system for reusing condensed water and condensation water recycling method | |
| CN205137767U (en) | Multi -functional cold storage air conditioner | |
| CN109747377A (en) | A kind of vehicle air conditioning waste water utilization system and vehicle | |
| CN208544188U (en) | Road surface dust suppression system and hydrogen cell automobile for hydrogen cell automobile | |
| CN212985401U (en) | EGR valve assembly, EGR system and engine | |
| CN216213596U (en) | Tail gas treatment device and fuel cell vehicle | |
| CN212073600U (en) | Automobile air conditioner condensate water conversion and utilization device | |
| CN208296360U (en) | The pressure control adjusting device of automotive air-conditioning condenser | |
| CN2839879Y (en) | Air conditioning water system booster exhauster | |
| CN206427014U (en) | A kind of heavy-duty commercial vehicle brake micro liquid cooling device | |
| CN217306549U (en) | Fuel cell intelligent water storage tank system for forklift | |
| TWI334830B (en) |
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 |