CN113903953B - Purging method of fuel cell system and fuel cell system - Google Patents

Purging method of fuel cell system and fuel cell system Download PDF

Info

Publication number
CN113903953B
CN113903953B CN202111165137.9A CN202111165137A CN113903953B CN 113903953 B CN113903953 B CN 113903953B CN 202111165137 A CN202111165137 A CN 202111165137A CN 113903953 B CN113903953 B CN 113903953B
Authority
CN
China
Prior art keywords
port
humidifier
communicated
inlet
electromagnetic valve
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
Application number
CN202111165137.9A
Other languages
Chinese (zh)
Other versions
CN113903953A (en
Inventor
谭旭光
陈文淼
刘艳会
郗富强
马学龙
孙阳超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weichai Power Co Ltd
Original Assignee
Weichai Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Weichai Power Co Ltd filed Critical Weichai Power Co Ltd
Priority to CN202111165137.9A priority Critical patent/CN113903953B/en
Publication of CN113903953A publication Critical patent/CN113903953A/en
Application granted granted Critical
Publication of CN113903953B publication Critical patent/CN113903953B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
    • H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
    • H01M8/04156—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal
    • H01M8/04179—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal by purging or increasing flow or pressure of 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
    • H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
    • H01M8/04228—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells during shut-down
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
    • H01M8/04253—Means for solving freezing problems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/043—Processes for controlling fuel cells or fuel cell systems applied during specific periods
    • H01M8/04303—Processes for controlling fuel cells or fuel cell systems applied during specific periods applied during shut-down
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/0432—Temperature; Ambient temperature
    • H01M8/04373—Temperature; Ambient temperature of auxiliary devices, e.g. reformers, compressors, burners
    • 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
    • H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
    • H01M8/04537—Electric variables
    • H01M8/04634—Other electric variables, e.g. resistance or impedance
    • H01M8/04649—Other electric variables, e.g. resistance or impedance of fuel cell stacks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04298—Processes for controlling fuel cells or fuel cell systems
    • H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
    • H01M8/04828—Humidity; Water content
    • H01M8/04835—Humidity; Water content of fuel cell reactants
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

The invention discloses a fuel cell system and a purging method of the fuel cell system, wherein the purging method of the fuel cell system controls purging steps of a galvanic pile and a humidifier according to a relation between an ambient temperature and an icing temperature at which the humidifier freezes. Specifically, when T is larger than T1, air passes through a humidifier and a galvanic pile, and the galvanic pile and the humidifier are simultaneously purged until X is larger than X1; when T is less than or equal to T1, firstly, purging the galvanic pile and the humidifier until X is more than X2, and then, independently purging the humidifier until delta y is less than delta y 1 . According to the method and the device, the moisture content in the galvanic pile is quantified into the difference value between the internal resistance of the galvanic pile and the calibrated internal resistance of the galvanic pile, the moisture content in the humidifier is quantified into the difference value between the air humidity of the first inlet of the humidifier and the air humidity of the second outlet of the humidifier and the calibrated value difference value between the air humidity of the humidifier, and the moisture content in the galvanic pile and the humidifier is guaranteed to reach the moisture content which can not be frozen.

Description

Purging method of fuel cell system and fuel cell system
Technical Field
The invention relates to the technical field of new energy, in particular to a purging method of a fuel cell system and the fuel cell system.
Background
The fuel cell system has the advantages of environmental protection, high energy density, high power generation efficiency, high starting speed and the like.
In a low-temperature environment, liquid water in a humidifier of the fuel cell system is inevitably frozen, so that the cold start time of the fuel cell system is prolonged, even a membrane electrode of a galvanic pile of the fuel cell system is damaged in severe cases, and the performance and the service life of the fuel cell system are reduced.
In the prior art, liquid water in the humidifier is typically reduced by purging. Specifically, when the fuel cell system is stopped, air is introduced into the fuel cell system for a period of time to purge moisture in the humidifier and a galvanic pile of the fuel cell system, so that less moisture is ensured to be remained in the galvanic pile, and liquid water in the humidifier is taken away.
But purging among the prior art, can not quantify the time of purging to guarantee that the moisture content in galvanic pile and the humidifier reaches the moisture content that can not take place to freeze, intercooler and humidifier are located the entry of galvanic pile simultaneously, and the air humidity that gets into the galvanic pile through intercooler and humidifier can increase, and the time that needs to purge is longer just can reach the purpose, has caused the wasting of resources.
Therefore, how to quantify the purging time, ensure that the moisture content in the stack and the humidifier reaches the moisture content at which no icing occurs, and shorten the purging time becomes a technical problem to be solved by those skilled in the art.
Disclosure of Invention
In view of this, the present invention provides a purging method for a fuel cell system, so as to quantify the purging time, ensure that the moisture content in the stack and the humidifier reaches the moisture content at which no icing occurs, and shorten the purging time. The invention also provides a fuel cell system.
In order to achieve the purpose, the invention provides the following technical scheme:
a purge method of a fuel cell system, comprising:
obtaining an ambient temperature T and an icing temperature T1;
calibrating the internal resistance of the galvanic pile monitored by the internal resistance monitoring device under different environmental temperature conditions, wherein the calibrated internal resistance of the internal resistance monitoring device is X1 when T is more than T1, and the calibrated internal resistance of the internal resistance monitoring device is X2 when T is less than or equal to T1;
when T is larger than T1, purging the galvanic pile and the humidifier until X is larger than X1, wherein X is the internal resistance of the galvanic pile monitored by the internal resistance monitoring device;
when T is less than or equal to T1, firstly purging the galvanic pile and the humidifier until X is more than X2; then purging the humidifier separately until Δ y < Δ y 1 Where Δ y is the difference between the air humidity at the first inlet of the humidifier and the air humidity at the second outlet of the humidifier, Δ y 1 Is a calibrated value of the difference in air humidity of the humidifier.
Preferably, in the purging method of the fuel cell system, before purging the stack, the temperature of the air for purging is reduced.
Preferably, in the purging method of the fuel cell system, the temperature of the air is reduced by a low-temperature cooling circuit.
A fuel cell system is suitable for the purging method of the fuel cell system, and comprises an air compressor, an intercooler, a humidifier and a galvanic pile, wherein an outlet of the air compressor is communicated with an inlet of the intercooler, an outlet of the intercooler is communicated with a first inlet of the humidifier, a first outlet of the humidifier is communicated with an inlet of the galvanic pile, an outlet of the galvanic pile is communicated with a second inlet of the humidifier, and a back pressure valve is arranged at a second outlet of the humidifier,
further comprising:
the temperature sensor is used for detecting the ambient temperature T and is in communication connection with the whole machine controller;
the internal resistance monitoring device is arranged on the galvanic pile, is used for monitoring the impedance of the galvanic pile, and is in communication connection with the complete machine controller;
the first branch is connected with the humidifier in parallel, and the intercooler is communicated with an inlet of the electric pile through the first branch;
the first two-position three-way electromagnetic valve is arranged between the intercooler and the humidifier and is in communication connection with the complete machine controller, the first two-position three-way electromagnetic valve comprises a first port A, a first port B and a first port C, the first port A is communicated with an outlet of the intercooler, the first port B can be communicated with an air inlet of the galvanic pile, the first port C can be communicated with a first inlet of the humidifier, when the first two-position three-way electromagnetic valve is located at a first working position, the port A is communicated with the port B, the port A is not communicated with the port C, when the first two-position three-way electromagnetic valve is located at a second working position, the port A is communicated with the port C, and the port A is not communicated with the port B,
a second two-position three-way electromagnetic valve which is arranged on the first branch, is in communication connection with the complete machine controller and is installed between the humidifier and the galvanic pile, and comprises a second port A, a second port B and a second port C, wherein the second port A is communicated with the first port B, the second port B is communicated with a second inlet of the humidifier, the second port C is communicated with an inlet of the galvanic pile, when the second port A is positioned at a first working position, the second port A is communicated with the second port C, the second port A is not communicated with the second port B, when the second port A is positioned at a second working position, the second port A is communicated with the second port B, and the second port A is not communicated with the second port C,
a third two-position three-way electromagnetic valve, which is installed between the first outlet of the humidifier and the inlet of the galvanic pile and is in communication connection with the whole machine controller, and comprises a third port A, a third port B and a third port C, wherein the third port A is communicated with the first outlet of the humidifier, the third port B is communicated with the second port C, the third port C is communicated with the inlet of the galvanic pile, when the third port A is located at a first working position, the third port B is communicated with the third port C, the third port A is not communicated with the third port C, when the third port A is located at a second working position, the third port A is communicated with the third port C, and the third port B is not communicated with the third port C,
when T is more than T1, the whole machine controller controls the back pressure valve to open, the first two-position three-way electromagnetic valve is located at a first working position, the second two-position three-way electromagnetic valve is located at a first working position, the galvanic pile and the humidifier are purged until X is more than X1, wherein X is the impedance of the monitored galvanic pile, X1 is the impedance of the galvanic pile under the condition that T is more than T1,
when T is less than or equal to T1, the whole machine controller firstly controls the back pressure valve to open, the first two-position three-way electromagnetic valve to be located at a first working position, the second two-position three-way electromagnetic valve to be located at a first working position and the third two-position three-way electromagnetic valve to be located at a first working position, the galvanic pile and the humidifier are purged until X is more than X2,
then the complete machine controller controls the first two-position three-way electromagnetic valve to be located at a first working position, the second two-position three-way electromagnetic valve to be located at a second working position and the third two-position three-way electromagnetic valve to be located at the first working position, and the humidifier is purged until delta y is smaller than delta y 1 Where Δ y is the difference between the air humidity at the first inlet of the humidifier and the air humidity at the second outlet of the humidifier, Δ y 1 Is a calibrated value of the difference in air humidity of the humidifier.
Preferably, in the above fuel cell system, the fuel cell system further includes a fourth two-position three-way electromagnetic valve, which is installed between the outlet of the stack and the second inlet of the humidifier and is in communication connection with the complete machine controller, and the fourth two-position three-way electromagnetic valve includes a fourth port a, a fourth port B, and a fourth port C, where the fourth port a is communicated with the second inlet of the humidifier, the fourth port B is communicated with the second port B through a second branch, the fourth port C is communicated with the outlet of the stack, and when the fuel cell system is located at the first working position, the fourth port a is communicated with the fourth port C, the fourth port B is not communicated with the port a, and when the fuel cell system is located at the second working position, the fourth port B is communicated with the port a, and the fourth port a is not communicated with the fourth port C.
Preferably, in the above fuel cell system, the intercooler communicates with a low-temperature cooling circuit for cooling air in the intercooler.
Preferably, in the above fuel cell system, the intercooler communicates with the low-temperature cooling circuit through a fifth two-position three-way valve,
the fifth two-position three-way valve comprises a fifth A port, a fifth B port and a fifth C port, the fifth A port can be communicated with the low-temperature cooling loop, the fifth B port can be communicated with the outside, the fifth C port is communicated with the intercooler, when the fifth C port is located at a first working position, the fifth A port is communicated with the fifth C port, the fifth A port is not communicated with the fifth B port, when the fifth C port is located at a second working position, the fifth A port is communicated with the fifth B port, and the fifth A port is not communicated with the fifth C port.
Preferably, in the above fuel cell system, the temperature sensor is provided at an air inlet of the air compressor.
Preferably, in the fuel cell system, the humidity of the air supplied to the humidifier is detected by a temperature and humidity sensor, and the temperature and humidity sensor is disposed at the first inlet of the humidifier and is in communication connection with the overall controller.
Preferably, in the above fuel cell system, the humidity of the air discharged from the humidifier is detected by a humidity sensor, and the humidity sensor is installed at the second outlet of the humidifier and is in communication connection with the overall controller.
According to the technical scheme, the purging method of the fuel cell system provided by the invention controls the purging steps of the electric pile and the humidifier according to the relation between the ambient temperature and the icing temperature of the humidifier. Specifically, when T is larger than T1, air passes through the humidifier and the galvanic pile, and the galvanic pile and the humidifier are simultaneously purged until X is larger than X1; when T is less than or equal to T1, firstly, purging the galvanic pile and the humidifier until X is more than X2, and then, independently purging the humidifier until delta y is less than delta y 1 . According to the method and the device, the moisture content in the galvanic pile is quantified into the difference value between the internal resistance of the galvanic pile and the calibrated internal resistance of the galvanic pile, the moisture content in the humidifier is quantified into the difference value between the air humidity of the first inlet of the humidifier and the air humidity of the second outlet of the humidifier and the calibrated value difference value between the air humidity of the humidifier, and the moisture content in the galvanic pile and the humidifier is guaranteed to reach the moisture content which can not be frozen.
The application also discloses a fuel cell system which is suitable for the purging method of the fuel cell system recorded in the scheme. The fuel cell system disclosed in the present application can be used to implement the purging method for a fuel cell system described above, and since the purging method for a fuel cell system has the above technical effects, the fuel cell system for implementing the purging method for a fuel cell system also has the same technical effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a flowchart of a purging method of a fuel cell system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a fuel cell system according to an embodiment of the present invention.
1. A fifth two-position three-way valve, 2, a first two-position three-way electromagnetic valve, 3, a second two-position three-way electromagnetic valve, 4, a fourth two-position three-way electromagnetic valve, 5, a third two-position three-way electromagnetic valve, 6, a back pressure valve, 7, a temperature sensor, 8, an internal resistance monitoring device, 9, a temperature and humidity sensor, 10 and a humidity sensor.
Detailed Description
The invention discloses a purging method of a fuel cell system, which aims to realize quantification of purging time, ensure that the moisture content in a galvanic pile and a humidifier reaches the moisture content without icing and shorten the purging time. The invention also discloses a fuel cell system.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Please refer to fig. 1-2.
The invention discloses a purging method of a fuel cell system, which comprises the following steps:
obtaining an ambient temperature T and an icing temperature T1;
calibrating the internal resistance of the galvanic pile monitored by the internal resistance monitoring device 8 under different environmental temperature conditions, wherein when T is greater than T1, the calibrated internal resistance of the internal resistance monitoring device 8 is X1, and when T is less than or equal to T1, the calibrated internal resistance of the internal resistance monitoring device 8 is X2;
when T is larger than T1, purging the galvanic pile and the humidifier until X is larger than X1, wherein X is the internal resistance of the galvanic pile monitored by the internal resistance monitoring device 8;
when T is less than or equal to T1, firstly purging the galvanic pile and the humidifier until X is more than X2; then the humidifier is purged separately until Δ y < Δ y 1 Where Δ y is the difference between the air humidity at the first inlet of the humidifier and the air humidity at the second outlet of the humidifier, Δ y 1 Is a calibrated value of the difference in air humidity of the humidifier.
The invention discloses a purging method of a fuel cell system, which controls the purging steps of a galvanic pile and a humidifier according to the relation between the environment temperature and the icing temperature of the galvanic pile. Specifically, when T is larger than T1, air passes through the humidifier and the galvanic pile, and the galvanic pile and the humidifier are simultaneously purged until X is larger than X1; when T is less than or equal to T1, firstly, purging the galvanic pile and the humidifier until X is more than X2, and then, independently purging the humidifier until delta y is less than delta y 1 . This application is quantized the difference of the internal resistance of galvanic pile and the internal resistance of the galvanic pile of demarcation with the content of moisture in the humidifier, and the difference of the air humidity of the first entry of humidifier and the air humidity of the second export of humidifier, the difference of the calibration value of the difference of the air humidity of humidifier with the content of moisture in humidifier guarantee that the moisture content has reached the moisture content that can not take place to freeze in galvanic pile and the humidifier.
In some embodiments of the present application, the ambient temperature T is obtained by a temperature sensor 7, and the temperature sensor 7 is in communication connection with the overall controller.
Because the galvanic pile and the humidifier both belong to fuel cell systems, the ambient temperatures are the same, and the icing temperatures are also the same, i.e., the icing temperature in the application is not only the icing temperature of the galvanic pile but also the icing temperature of the humidifier.
When the galvanic pile is frozen or not frozen, the content of water in the galvanic pile is different, which causes different internal resistances of the galvanic pile under the temperature conditions that T is more than T1 and T is less than or equal to T1, therefore, the internal resistance of the galvanic pile under the temperature condition that T is more than T1 and the internal resistance of the galvanic pile under the temperature condition that T is less than or equal to T1 need to be respectively calibrated.
According to the method, the internal resistance of the galvanic pile fed back by the internal resistance monitoring device is used, the whole machine controller represents the moisture content in the galvanic pile according to the difference value between the internal resistance fed back by the internal resistance monitoring device and the calibrated internal resistance, namely, the moisture content in the galvanic pile is quantized, when the difference value between the internal resistance fed back by the internal resistance monitoring device and the calibrated internal resistance is larger than 0, the moisture content in the galvanic pile reaches the moisture content without icing, or when the difference value between the internal resistance of the galvanic pile and the calibrated internal resistance is equal to 0, the moisture content in the galvanic pile reaches the upper limit of the moisture content without icing, and when the difference value between the internal resistance of the galvanic pile and the calibrated internal resistance is larger than 0, the moisture content in the galvanic pile is lower and is lower than the upper limit of the moisture content without icing.
When T is more than T1, purging both the galvanic pile and the humidifier;
and when T is less than or equal to T1, purging both the galvanic pile and the humidifier, and then purging the humidifier independently.
When the environmental temperature is higher than the icing temperature, the galvanic pile and the humidifier can not be iced, and the requirements on the moisture content in the galvanic pile and the humidifier are lower at the moment;
when ambient temperature is less than the temperature of icing, galvanic pile and humidifier all have the risk of taking place to freeze, and the requirement to moisture content in galvanic pile and the humidifier is higher this moment, and the moisture content among the humidifier among the prior art is often neglected, consequently need sweep alone the humidifier to reduce the content of moisture in the humidifier, prevent that the humidifier from taking place to freeze.
T is less than or equal to T1 and delta y is less than or equal to delta y 1 When the moisture content in the humidifier reaches the moisture content at which icing does not occur, or when the difference between the air humidity at the first inlet of the humidifier and the air humidity at the second outlet of the humidifier is equal to the difference between the calibrated value of the difference between the air humidity of the humidifier and the air humidity of the humidifier, the moisture content in the humidifier reaches the upper limit of the moisture content at which icing does not occur, and when the difference between the air humidity at the first inlet of the humidifier and the air humidity at the second outlet of the humidifier and the calibrated value of the difference between the air humidity of the humidifier is greater than 0, the moisture content in the humidifier is lower than the upper limit of the moisture content at which icing does not occur.
The purging method of the fuel cell system further comprises cooling air used for purging before purging the stack.
The temperature of the air at the outlet of the air compressor is relatively high, and the air needs to enter an intercooler for cooling, so that the air fed into the electric pile is cooled.
The cooling medium used for cooling the air by the intercooler comes from the low-temperature cooling loop, and the temperature of the air supplied to the electric pile is controlled by adjusting the water flow supplied to the intercooler, so that the temperature adjustment is realized.
Because air cooling needs time, lead to the pile in this application can sweep with the higher air of temperature in the short time, and do not pass through the humidifier, directly sweep the pile with the higher air of temperature, can shorten the purge time. The application also discloses a fuel cell system, which is suitable for the purging method of the fuel cell system recorded in the scheme.
The fuel cell system disclosed in the present application can be used to implement the purging method for a fuel cell system described above, and since the purging method for a fuel cell system has the above technical effects, the fuel cell system for implementing the purging method for a fuel cell system also has the same technical effects.
The fuel cell system includes an air compressor, an intercooler, a humidifier, and an electric stack.
As shown in fig. 2, an outlet of the air compressor is communicated with an inlet of the intercooler, an outlet of the intercooler is communicated with a first inlet of the humidifier, a first outlet of the humidifier is communicated with an inlet of the galvanic pile, an outlet of the galvanic pile is communicated with a second inlet of the humidifier, and a second outlet of the humidifier is provided with a back pressure valve 6.
The air compressed by the air compressor passes through the intercooler, the humidifier and the electric pile and is finally discharged through the humidifier.
The fuel cell system disclosed in the present application further includes a temperature sensor 7, an internal resistance monitoring device 8, a first branch, a first two-position three-way electromagnetic valve 2, a second two-position three-way electromagnetic valve 3, and a third two-position three-way electromagnetic valve 5.
The temperature sensor 7 is used for detecting the ambient temperature T and transmitting the ambient temperature T to the whole machine controller;
the internal resistance monitoring device 8 is arranged on the galvanic pile, and the internal resistance monitoring device 8 is in communication connection with the complete machine controller and is used for detecting the internal resistance of the galvanic pile;
the first two-position three-way electromagnetic valve 2 is arranged between the intercooler and the humidifier, the first two-position three-way electromagnetic valve 2 comprises a first port A, a first port B and a first port C, the first port A is communicated with an outlet of the intercooler, the first port B can be communicated with an air inlet of the electric pile, the first port C can be communicated with a first inlet of the humidifier, when the first two-position three-way electromagnetic valve is positioned at a first working position, the port A is communicated with the port B, the port A is not communicated with the port C, when the first two-position three-way electromagnetic valve is positioned at a second working position, the port A is communicated with the port C, the port A is not communicated with the port B,
the second two-position three-way electromagnetic valve 3 is arranged on the first branch and is arranged between the humidifier and the electric pile, the second two-position three-way electromagnetic valve 3 comprises a second port A, a second port B and a second port C, the second port A is communicated with the first port B, the second port B is communicated with a second inlet of the humidifier, the second port C is communicated with an inlet of the electric pile, when the second port A is positioned at a first working position, the second port A is communicated with the second port C, the second port A is not communicated with the second port B, when the second port A is positioned at a second working position, the second port A is communicated with the second port B, the second port A is not communicated with the second port C,
the third two-position three-way electromagnetic valve 5 is installed between the first outlet of the humidifier and the inlet of the galvanic pile, the third two-position three-way electromagnetic valve 5 comprises a third port A, a third port B and a third port C, the third port A is communicated with the first outlet of the humidifier, the third port B is communicated with the second port C, the third port C is communicated with the inlet of the galvanic pile, when the third port C is located at the first working position, the third port B is communicated with the third port C, the third port A is not communicated with the third port C, when the third port A is located at the second working position, the third port A is communicated with the third port C, and the third port B is not communicated with the third port C.
The first two-position three-way electromagnetic valve 2, the second two-position three-way electromagnetic valve 3 and the third two-position three-way electromagnetic valve 5 are all in communication connection with the whole machine controller.
When T is more than T1, the whole machine controller controls the back pressure valve 6 to be opened, the first two-position three-way electromagnetic valve 2 to be positioned at the first working position, the second two-position three-way electromagnetic valve 3 to be positioned at the first working position, and the third two-position three-way electromagnetic valve 5 to be positioned at the first working position, so as to purge the galvanic pile and the humidifier until X is more than X1,
wherein X is the impedance of the monitored electric pile, X1 is the impedance of the electric pile under the condition that T is more than T1,
as shown in fig. 2, air passes through an air compressor, an intercooler, a first port a and a first port B of a first two-position three-way solenoid valve 2, a first branch, a second port a and a second port C of a second two-position three-way solenoid valve 3, a third port B and a third port C of a third two-position three-way solenoid valve 5, an inlet of a cell stack, an outlet of the cell stack, a second inlet of a humidifier and a second outlet of the humidifier, and the process realizes purging of the cell stack and the humidifier.
When T is less than or equal to T1, the whole machine controller firstly controls the back pressure valve 6 to be opened, the first two-position three-way electromagnetic valve 2 to be positioned at the first working position, the second two-position three-way electromagnetic valve 3 to be positioned at the first working position and the third two-position three-way electromagnetic valve 5 to be positioned at the first working position, the pile and the humidifier are purged until X is more than X2,
as shown in fig. 2, air passes through an air compressor, an intercooler, a first port a and a first port B of a first two-position three-way solenoid valve 2, a first branch, a second port a and a second port C of a second two-position three-way solenoid valve 3, a third port B and a third port C of a third two-position three-way solenoid valve 5, an inlet of a cell stack, an outlet of the cell stack, a second inlet of a humidifier and a second outlet of the humidifier, and the process realizes purging of the cell stack and the humidifier;
then the complete machine controller controls the first two-position three-way electromagnetic valve 2 to be positioned at the first working position and the second working positionThe two-position three-way electromagnetic valve 3 is positioned at a second working position and used for purging the humidifier until delta y is less than delta y 1 ，
Where Δ y is the difference between the air humidity at the first inlet of the humidifier and the air humidity at the second outlet of the humidifier, Δ y 1 Is a calibrated value of the difference in air humidity of the humidifier,
as shown in fig. 2, the air passes through the air compressor, the intercooler, the first port a and the first port B of the first two-position three-way solenoid valve 2, the first branch, the second port a and the second port B of the second two-position three-way solenoid valve 3, the second inlet of the humidifier and the second outlet of the humidifier, and the humidifier is separately purged.
When the fuel cell system normally operates, the first two-position three-way electromagnetic valve 2 is located at a second working position, the third two-position three-way electromagnetic valve 5 is the second working position, and air passes through the air compressor, the intercooler, the first port A and the first port C of the first two-position three-way electromagnetic valve 2, the first inlet of the humidifier, the first outlet of the humidifier, the third port A and the third port C of the third two-position three-way electromagnetic valve 5, the inlet of the cell stack, the outlet of the cell stack, the second inlet of the humidifier and the second outlet of the humidifier.
The internal resistance monitoring device 8 is an internal resistance monitoring device commonly used in the prior art, such as a battery internal resistance monitoring system, an internal resistance monitoring sensor, a wireless internal resistance monitoring device or an internal resistance on-line monitor.
The fuel cell system further comprises a fourth two-position three-way electromagnetic valve 4, the fourth two-position three-way electromagnetic valve 4 is installed between an outlet of the pile and a second inlet of the humidifier and is in communication connection with a whole machine controller, the fourth two-position three-way electromagnetic valve 4 comprises a fourth port A, a fourth port B and a fourth port C, the fourth port A is communicated with the second inlet of the humidifier, the fourth port B is communicated with the second port B through a second branch, the fourth port C is communicated with an outlet of the pile, when the fuel cell system is located at a first working position, the fourth port A is communicated with the fourth port C, the fourth port B is not communicated with the port A, when the fuel cell system is located at a second working position, the fourth port B is communicated with the port A, and the fourth port A is not communicated with the fourth port C.
When T is more than T1, the whole machine controller controls the back pressure valve 6 to be opened, the first two-position three-way electromagnetic valve 2 to be positioned at the first working position, the second two-position three-way electromagnetic valve 3 to be positioned at the first working position, the third two-position three-way electromagnetic valve 5 to be positioned at the first working position and the fourth two-position three-way electromagnetic valve 4 to be positioned at the first working position, so as to purge the galvanic pile and the humidifier until X is more than X1,
wherein X is the impedance of the monitored electric pile, X1 is the impedance of the electric pile under the condition that T is more than T1,
as shown in fig. 2, air passes through an air compressor, an intercooler, a first port a and a first port B of a first two-position three-way solenoid valve 2, a first branch, a second port a and a second port C of a second two-position three-way solenoid valve 3, a third port B and a third port C of a third two-position three-way solenoid valve 5, an inlet of a cell stack, an outlet of the cell stack, a fourth port C and a fourth port a of a fourth two-position three-way solenoid valve 4, a second inlet of a humidifier and a second outlet of the humidifier, and the process realizes purging of the cell stack and the humidifier.
When T is less than or equal to T1, the whole machine controller firstly controls a backpressure valve 6 to be opened, a first two-position three-way electromagnetic valve 2 to be positioned at a first working position, a second two-position three-way electromagnetic valve 3 to be positioned at the first working position, and a third two-position three-way electromagnetic valve 5 to be positioned at the first working position, so as to sweep the galvanic pile and the humidifier until X is more than X2,
as shown in fig. 2, air passes through an air compressor, an intercooler, a first port a and a first port B of a first two-position three-way solenoid valve 2, a first branch, a second port a and a second port C of a second two-position three-way solenoid valve 3, a third port B and a third port C of a third two-position three-way solenoid valve 5, an inlet of a cell stack, an outlet of the cell stack, a fourth port C and a fourth port a of a fourth two-position three-way solenoid valve 4, a second inlet of a humidifier and a second outlet of the humidifier, and the process realizes purging of the cell stack and the humidifier;
then the complete machine controller controls the first two-position three-way electromagnetic valve 2 to be located at the first working position and the second two-position three-way electromagnetic valve 3 to be located at the second working position, and the humidifier is purged until delta y is smaller than delta y 1 ，
Where Δ y is the difference in humidity of the air discharged from the humidifier, Δ y 1 As a difference between the humidity of the air supplied into the humidifier and the humidity of the air discharged from the humidifier,
as shown in fig. 2, air passes through the air compressor, the intercooler, the first port a and the first port B of the first two-position three-way solenoid valve 2, the first branch, the second port a and the second port B of the second two-position three-way solenoid valve 3, the second branch, the fourth port B and the fourth port a of the fourth two-position three-way solenoid valve 4, the second inlet of the humidifier and the second outlet of the humidifier, and the humidifier is purged separately.
As shown in fig. 2, the intercooler communicates with a low-temperature cooling circuit for cooling the air in the intercooler so that the temperature of the air coming out of the intercooler during the shutdown purge of the engine can reach the maximum tolerance temperature of the stack.
The intercooler is communicated with the low-temperature cooling loop through the fifth two-position three-way electromagnetic valve, the cooling effect of the intercooler on air is controlled by adjusting the opening proportion of the fifth two-position three-way electromagnetic valve, the dry air with the highest temperature tolerance of the electric pile can be used for purging the electric pile and the humidifier when the fuel cell system is stopped, and the purging time is shortened.
Specifically, the fifth two-position three-way valve 1 includes a fifth port a, a fifth port B and a fifth port C, the fifth port a can be communicated with the low-temperature cooling circuit, the fifth port B can be communicated with the outside, the fifth port C is communicated with the intercooler, when the fifth port a is located at the first working position, the fifth port a is communicated with the fifth port C, the fifth port a is not communicated with the fifth port B, when the fifth port a is located at the second working position, the fifth port a is communicated with the fifth port B, and the fifth port a is not communicated with the fifth port C.
And the fifth two-position three-way valve 1 is in communication connection with the complete machine controller.
In some embodiments of the present application, the temperature sensor 7 is provided at the air inlet of the air compressor.
The temperature sensor 7 is in communication connection with the first two-position three-way electromagnetic valve 2, the second two-position three-way electromagnetic valve 3, the third two-position three-way electromagnetic valve 5, the fourth two-position three-way electromagnetic valve 4 and the fifth two-position three-way electromagnetic valve, and the complete machine controller controls the working positions of the first two-position three-way electromagnetic valve 2, the second two-position three-way electromagnetic valve 3, the third two-position three-way electromagnetic valve 5, the fourth two-position three-way electromagnetic valve 4 and the fifth two-position three-way electromagnetic valve according to the temperature collected by the temperature sensor 7.
The humidity of the air supplied to the humidifier is detected by a temperature and humidity sensor 9, and the temperature and humidity sensor 9 is arranged at a first inlet of the humidifier and is in communication connection with the complete machine controller.
The temperature and humidity sensor 9 can detect not only temperature but also humidity.
The humidity of the air discharged from the humidifier is detected by a humidity sensor 10, and the humidity sensor 10 is installed at the second outlet of the humidifier and is in communication connection with the complete machine controller.
The whole machine controller makes a difference between the received humidity of the air supplied to the humidifier and the humidity of the air discharged from the humidifier, which is acquired by the temperature and humidity sensor 9, and a calibrated value of the difference between the received humidity and the humidity of the air discharged from the humidifier and acquired by the humidity sensor 10, so as to judge whether the moisture content in the humidifier reaches the moisture content which cannot be frozen.
The temperature and humidity sensor 9 can also be used to detect the temperature of the air supplied to the cell stack and/or the humidifier.
When T is more than T1, X is less than X1, which indicates that more water exists in the galvanic pile and the purging is required to be continued, and when X is more than X1, which indicates that the water in the galvanic pile is less, the purging can be stopped;
when T is less than or equal to T1, X is less than X1, which indicates that more water exists in the galvanic pile and the galvanic pile needs to be continuously purged, and when X is greater than X1, which indicates that the water in the galvanic pile is less, the purging of the galvanic pile can be stopped;
when T is less than or equal to T1 and X is more than X1, and when delta y is more than delta y1, the fact that more water exists in the humidifier is indicated, and the purging is required to be continued, and when delta y is less than delta y1, the fact that the water in the humidifier is less is indicated, and the purging can be stopped.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A purging method for a fuel cell system using air for purging, the fuel cell system including an air compressor, an intercooler, a humidifier, and a stack, an outlet of the air compressor being communicated with an inlet of the intercooler, an outlet of the intercooler being communicated with a first inlet of the humidifier, a first outlet of the humidifier being communicated with an inlet of the stack, an outlet of the stack being communicated with a second inlet of the humidifier, a second outlet of the humidifier being provided with a back pressure valve (6), the method comprising:
acquiring an ambient temperature T and an icing temperature T1 of the galvanic pile;
calibrating the internal resistance of the galvanic pile monitored by the internal resistance monitoring device (8) under different environmental temperature conditions, wherein when T is greater than T1, the internal resistance is X1, and when T is less than or equal to T1, the internal resistance is X2;
when T is larger than T1, purging the galvanic pile and the humidifier until X is larger than X1, wherein X is the internal resistance of the galvanic pile monitored by the internal resistance monitoring device (8);
when T is less than or equal to T1, firstly purging the galvanic pile and the humidifier until X is more than X2; then purging the humidifier separately until Δ y < Δ y 1 Where Δ y is the difference between the air humidity at the first inlet of the humidifier and the air humidity at the second outlet of the humidifier, Δ y 1 Is a calibrated value of the difference in air humidity of the humidifier.
2. A purge method for a fuel cell system according to claim 1, further comprising cooling the air for purging before purging the stack.
3. A purge method for a fuel cell system according to claim 2, wherein the air is cooled by a low temperature cooling circuit.
4. A fuel cell system characterized in that the purging method applied to the fuel cell system of claim 1 comprises an air compressor, an intercooler, a humidifier and a stack, wherein an outlet of the air compressor is communicated with an inlet of the intercooler, an outlet of the intercooler is communicated with a first inlet of the humidifier, a first outlet of the humidifier is communicated with an inlet of the stack, an outlet of the stack is communicated with a second inlet of the humidifier, and a second outlet of the humidifier is provided with a back pressure valve (6),
further comprising:
the temperature sensor (7) is used for detecting the ambient temperature T and is in communication connection with the complete machine controller;
the internal resistance monitoring device (8) is arranged on the galvanic pile, is used for monitoring the internal resistance of the galvanic pile, and is in communication connection with the complete machine controller;
the first branch is connected with the humidifier in parallel, and the intercooler is communicated with an inlet of the electric pile through the first branch;
a first two-position three-way electromagnetic valve (2) which is arranged between the intercooler and the humidifier and is in communication connection with the complete machine controller, wherein the first two-position three-way electromagnetic valve (2) comprises a first port A, a first port B and a first port C, the first port A is communicated with an outlet of the intercooler, the first port B is communicated with an air inlet of the galvanic pile, the first port C is communicated with a first inlet of the humidifier, when the two-position three-way electromagnetic valve is positioned at a first working position, the first port A is communicated with the first port B, the first port A is not communicated with the first port C, when the two-position three-way electromagnetic valve is positioned at a second working position, the first port A is communicated with the first port C, and the first port A is not communicated with the first port B,
a second two-position three-way electromagnetic valve (3) which is arranged on the first branch, is in communication connection with the complete machine controller, is installed between the first two-position three-way electromagnetic valve (2) and the galvanic pile, and comprises a second port A, a second port B and a second port C, wherein the second port A is communicated with the first port B, the second port B is communicated with a second inlet of the humidifier, the second port C is communicated with an inlet of the galvanic pile, when the two-position three-way electromagnetic valve is positioned at a first working position, the second port A is communicated with the second port C, the second port A is not communicated with the second port B, when the two-position three-way electromagnetic valve is positioned at a second working position, the second port A is communicated with the second port B, and the second port A is not communicated with the second port C,
a third two-position three-way electromagnetic valve (5) which is arranged between the first outlet of the humidifier and the inlet of the galvanic pile and is in communication connection with the whole machine controller, wherein the third two-position three-way electromagnetic valve (5) comprises a third port A, a third port B and a third port C, the third port A is communicated with the first outlet of the humidifier, the third port B is communicated with the second port C, the third port C is communicated with the inlet of the galvanic pile, when the three-position three-way electromagnetic valve is positioned at a first working position, the third port B is communicated with the third port C, the third port A is not communicated with the third port C, when the third port A is positioned at a second working position, the third port A is communicated with the third port C, and the third port B is not communicated with the third port C,
when T is more than T1, the whole machine controller controls the back pressure valve (6) to be opened, the first two-position three-way electromagnetic valve (2) to be located at a first working position, the second two-position three-way electromagnetic valve (3) to be located at the first working position and the third two-position three-way electromagnetic valve (5) to be located at the first working position, the galvanic pile and the humidifier are purged until X is more than X1, wherein X is the internal resistance of the galvanic pile monitored by the internal resistance monitoring device (8), X1 is the calibrated internal resistance when T is more than T1,
when T is less than or equal to T1, the whole machine controller firstly controls the back pressure valve (6) to be opened, the first two-position three-way electromagnetic valve (2) to be positioned at a first working position, the second two-position three-way electromagnetic valve (3) to be positioned at a first working position and the third two-position three-way electromagnetic valve (5) to be positioned at a first working position, the galvanic pile and the humidifier are purged until X is more than X2,
then the complete machine controller controls the first two-position three-way electromagnetic valve (2) to be located at a first working position and the second two-position three-way electromagnetic valve (3) to be located at a second working position, and the humidifier is purged until delta y is smaller than delta y 1 Where Δ y is the difference between the air humidity at the first inlet of the humidifier and the air humidity at the second outlet of the humidifier, Δ y 1 Is a calibrated value of the difference in air humidity of the humidifier.
5. The fuel cell system according to claim 4, further comprising a fourth two-position three-way solenoid valve (4) installed between the outlet of the stack and the second inlet of the humidifier and communicatively connected to the complete machine controller, wherein the fourth two-position three-way solenoid valve (4) includes a fourth port A, a fourth port B, and a fourth port C, the fourth port A is communicated with the second inlet of the humidifier, the fourth port B is communicated with the second port B through a second branch, the fourth port C is communicated with the outlet of the stack, when the fuel cell system is in the first operating position, the fourth port A is communicated with the fourth port C, the fourth port B is not communicated with the fourth port A, and when the fuel cell system is in the second operating position, the fourth port B is communicated with the fourth port A, and the fourth port A is not communicated with the fourth port C.
6. The fuel cell system of claim 4, wherein the intercooler is in communication with a low temperature cooling circuit for cooling air within the intercooler.
7. A fuel cell system according to claim 6, characterized in that the intercooler communicates with the low-temperature cooling circuit through a fifth two-position, three-way valve (1),
the fifth two-position three-way valve (1) comprises a fifth A port, a fifth B port and a fifth C port, the fifth A port is communicated with the low-temperature cooling loop, the fifth B port is communicated with the outside, the fifth C port is communicated with the intercooler, when the fifth C port is located at a first working position, the fifth A port is communicated with the fifth C port, the fifth A port is not communicated with the fifth B port, when the fifth C port is located at a second working position, the fifth A port is communicated with the fifth B port, and the fifth A port is not communicated with the fifth C port.
8. The fuel cell system according to claim 5, wherein the temperature sensor (7) is provided at an air intake of the air compressor.
9. The fuel cell system according to claim 5, wherein the humidity of the air supplied to the humidifier is detected by a temperature and humidity sensor (9), and the temperature and humidity sensor (9) is disposed at the first inlet of the humidifier and is in communication with the complete machine controller.
10. The fuel cell system according to claim 9, wherein the humidity of the air discharged from the humidifier is detected by a humidity sensor (10), and the humidity sensor (10) is installed at a second outlet of the humidifier and is in communication with the overall controller.
CN202111165137.9A 2021-09-30 2021-09-30 Purging method of fuel cell system and fuel cell system Active CN113903953B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111165137.9A CN113903953B (en) 2021-09-30 2021-09-30 Purging method of fuel cell system and fuel cell system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111165137.9A CN113903953B (en) 2021-09-30 2021-09-30 Purging method of fuel cell system and fuel cell system

Publications (2)

Publication Number Publication Date
CN113903953A CN113903953A (en) 2022-01-07
CN113903953B true CN113903953B (en) 2023-01-24

Family

ID=79190023

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111165137.9A Active CN113903953B (en) 2021-09-30 2021-09-30 Purging method of fuel cell system and fuel cell system

Country Status (1)

Country Link
CN (1) CN113903953B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116006484B (en) * 2023-01-10 2023-07-07 北京伯肯节能科技股份有限公司 Anti-icing and anti-blocking protection system of centrifugal hydrogen circulating pump

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007324071A (en) * 2006-06-05 2007-12-13 Toyota Motor Corp Fuel cell system
CN109921063A (en) * 2017-12-13 2019-06-21 郑州宇通客车股份有限公司 A kind of fuel battery air humidifying system, fuel cell system and vehicle
CN111710884A (en) * 2020-05-30 2020-09-25 同济大学 Fuel cell system and control method thereof
CN112186223A (en) * 2020-09-27 2021-01-05 重庆长安新能源汽车科技有限公司 Automobile fuel cell system and air humidity control method thereof
CN112366336A (en) * 2020-10-14 2021-02-12 广东国鸿氢能科技有限公司 Purging method and system for proton exchange membrane fuel cell
CN213242613U (en) * 2020-09-28 2021-05-18 天津新氢动力科技有限公司 Structure that fuel cell fork truck system negative pole was dry to be swept

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007324071A (en) * 2006-06-05 2007-12-13 Toyota Motor Corp Fuel cell system
CN109921063A (en) * 2017-12-13 2019-06-21 郑州宇通客车股份有限公司 A kind of fuel battery air humidifying system, fuel cell system and vehicle
CN111710884A (en) * 2020-05-30 2020-09-25 同济大学 Fuel cell system and control method thereof
CN112186223A (en) * 2020-09-27 2021-01-05 重庆长安新能源汽车科技有限公司 Automobile fuel cell system and air humidity control method thereof
CN213242613U (en) * 2020-09-28 2021-05-18 天津新氢动力科技有限公司 Structure that fuel cell fork truck system negative pole was dry to be swept
CN112366336A (en) * 2020-10-14 2021-02-12 广东国鸿氢能科技有限公司 Purging method and system for proton exchange membrane fuel cell

Also Published As

Publication number Publication date
CN113903953A (en) 2022-01-07

Similar Documents

Publication Publication Date Title
CN110380086B (en) Fuel cell auxiliary system and shutdown cathode rapid purging method
CN112186223B (en) Automobile fuel cell system and air humidity control method thereof
CN106640294B (en) Dual-pressure-sensor type gas-drive urea injection system and control method
US10347928B2 (en) Air control system and method for fuel cell stack system
CN111224132B (en) Shutdown purging method and system for fuel cell
CN112234228A (en) Vehicle-mounted fuel cell hydrogen pipeline purging system and method
CN113903953B (en) Purging method of fuel cell system and fuel cell system
CN111224131A (en) Fuel cell system and low-temperature purging method thereof
CN101640279A (en) Humidification control during shutdown of a fuel cell system
CN113266460B (en) Abnormality monitoring method, control device, turbocharger, and engine system
CN102237538B (en) Method to detect no coolant flow in a fuel cell system
CN111106367A (en) System for avoiding secondary icing cold start failure of fuel cell and control method
CN101809796A (en) Fuel cell system
CN114914488B (en) Fuel cell hydrogen deficiency detection and diagnosis method
CN112582648A (en) Low-temperature purging system and purging method for liquid-cooled fuel cell system
US9853312B2 (en) Method for determining membrane protonic resistance of a fuel cell stack
CN114142066B (en) Fuel cell cold start system, method and vehicle
CN103579649A (en) Extremum seeking algorithm in a variable time interval to detect anode pressure sensor stuck failure in a fuel cell system
CN214152954U (en) Low-temperature purging system of liquid cooling fuel cell system
CN220934129U (en) Reverse pole test system of fuel cell stack
CN115332582B (en) Low-temperature starting control system for fuel cell
CN113540500B (en) Low-temperature cold start control method for hydrogen fuel cell engine
CN213304184U (en) Proton exchange membrane fuel cell purging system
CN215418249U (en) Fuel cell air supply device and vehicle
CN216084960U (en) Hydrogen discharging device for hydrogen fuel cell and vehicle

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