CN111211339A - Temperature control system of high-temperature alcohol fuel cell - Google Patents
Temperature control system of high-temperature alcohol fuel cell Download PDFInfo
- Publication number
- CN111211339A CN111211339A CN201811394205.7A CN201811394205A CN111211339A CN 111211339 A CN111211339 A CN 111211339A CN 201811394205 A CN201811394205 A CN 201811394205A CN 111211339 A CN111211339 A CN 111211339A
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- Prior art keywords
- fuel
- temperature
- pump
- combustion chamber
- air pump
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04694—Processes for controlling fuel cells or fuel cell systems characterised by variables to be controlled
- H01M8/04701—Temperature
- H01M8/04708—Temperature of fuel cell reactants
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- 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 temperature control system of a high-temperature alcohol fuel cell, which comprises a fuel combustion chamber, wherein a combustion catalyst is arranged in the fuel combustion chamber; the electric pile converts the chemical energy of the fuel into electric energy; a fuel processing chamber for processing the fuel entering the electric pile into the fuel which can be used by the fuel cell electric pile; an air pump for supplying air or oxygen to the fuel combustion chamber; a fuel pump for supplying fuel to the fuel processing chamber; a fuel tank for supplying fuel to the fuel pump; the system also comprises a control circuit for receiving the temperature information transmitted by the temperature sensor, and the control circuit controls the running speed of the fuel pump and the air pump in real time according to the received temperature information. The system monitors the working state of the fuel pump and the air pump in real time by acquiring the temperature information in the fuel combustion chamber in real time, thereby saving fuel as much as possible while ensuring the fuel supply of the electric pile and prolonging the service life of the fuel treatment chamber.
Description
Technical Field
The invention relates to the field of fuel cell control, in particular to a temperature control system of a high-temperature alcohol fuel cell.
Background
A fuel cell is a chemical device that directly converts chemical energy of fuel into electrical energy, and is also called an electrochemical generator. The fuel cell converts the Gibbs free energy in the chemical energy of the fuel into electric energy through electrochemical reaction, and is not limited by the Carnot cycle effect, so the efficiency is high; the fuel cell uses fuel and oxygen as reactants, and has no mechanical transmission component, so that it has no noise pollution and very little harmful gas discharge. It follows that fuel cells are the most promising power generation technology from the viewpoint of energy saving and environmental protection. In the related art, a fuel cell system has been proposed which generates electric power by receiving supply of reactant gases (a fuel gas and an oxidizing gas), and has been put to practical use, in which air is supplied as the oxidizing gas to a cathode side of a fuel cell stack, and hydrogen gas or other gases capable of participating in reaction power generation are supplied as the fuel gas to an anode side of the fuel cell stack, and electric power is generated by an electrochemical reaction of these gases. Then, in the prior art, when the fuel gas passes through the anode side of the fuel cell stack, the fuel gas is not reasonably utilized, so that the fuel utilization efficiency of the fuel cell is reduced.
Disclosure of Invention
According to the problems existing in the prior art, the invention discloses a temperature control system of a high-temperature alcohol fuel cell, which comprises
The fuel combustion chamber is internally provided with a combustion catalyst, and the fuel combustion chamber is connected with a temperature sensor for detecting temperature information in the fuel combustion chamber;
the electric pile converts the chemical energy of the fuel into electric energy;
a fuel processing chamber for processing the fuel entering the electric pile into the fuel which can be used by the fuel cell electric pile;
an air pump for supplying air or oxygen to the fuel combustion chamber;
a fuel pump for supplying fuel to the fuel processing chamber;
a fuel tank for supplying fuel to the fuel pump;
the system also comprises a control circuit for receiving the temperature information transmitted by the temperature sensor, and the control circuit controls the running speed of the fuel pump and the air pump in real time according to the received temperature information.
Further, the control circuit controls the operation speed of the fuel pump in real time in the following way: calculating the difference between the temperature of the fuel combustion chamber and the target temperature, and if the difference is smaller than a set threshold, increasing the set value of the rated flow of the fuel pump and operating the air pump at the set value of the rated power;
and if the difference is larger than or equal to the set threshold, continuously judging whether the temperature difference is smaller than a second threshold, if so, increasing a second set value of the rated flow of the fuel pump, and enabling the air pump to work at a set value of the rated power, otherwise, continuously judging whether the temperature difference is smaller than a third threshold, if so, increasing the set value of the rated flow of the fuel pump, and enabling the air pump to work at the set value of the rated power, and repeating the steps to regulate and control the fuel pump and the air pump.
Due to the adoption of the technical scheme, the temperature control system for the fuel cell provided by the invention can monitor the working states of the fuel pump and the air pump in real time by acquiring the temperature information in the fuel combustion chamber in real time, so that the fuel supply of the galvanic pile is ensured, the fuel is saved as much as possible, and the service life of the galvanic pile is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of the temperature control system of the high-temperature alcohol fuel cell of the present invention.
FIG. 2 is a flow chart of the operation of the system of the present invention.
In the figure: 101. air pump 102, control circuit 103, temperature sensor 104, fuel combustion chamber 105, fuel pump 106, galvanic pile 107, fuel processing chamber 108, fuel tank.
Detailed Description
In order to make the technical solutions and advantages of the present invention clearer, the following describes the technical solutions in the embodiments of the present invention clearly and completely with reference to the drawings in the embodiments of the present invention:
the temperature control system for the high-temperature alcohol fuel cell shown in fig. 1 specifically includes a main control end, i.e., a control circuit 102, for controlling the operation of the system; a fuel combustion chamber 104 containing a catalyst therein for catalytically reacting the fuel with air or oxygen to release heat and for providing heat to a fuel processing chamber 105; the fuel processing chamber 107 is used for processing fuel into fuel usable by the fuel cell stack; fuel tank 108 is used to store liquid or gaseous fuel; the fuel pump 105 is used to supply fuel to the fuel processing chamber 107; the electric pile 106 is used for converting chemical energy of fuel into electric energy; the air pump 101 is used for supplying air or oxygen to the fuel combustion chamber; the temperature sensor 103 is configured to measure a temperature of the combustion chamber, transmit the detected temperature to the control circuit 102, and the control circuit 102 makes a difference between the received temperature and a target temperature, and determines an operation speed of the fuel pump according to the difference.
Further, as shown in fig. 2, which is a flow chart of a fuel input control system, the control circuit board 102 firstly enters a fuel input control flow, collects the temperature of the combustion chamber, calculates the temperature difference between the temperature of the combustion chamber and a target temperature, determines whether the temperature difference is less than-10 ℃, if so, increases the rated flow of the fuel pump by 5%, the air pump works at 30% of the rated power, otherwise, continuously determines whether the temperature difference is less than-5 ℃, if so, increases the rated flow of the fuel pump by 3%, the air pump works at 30% of the rated power, if not, continuously determines whether the temperature difference is less than-1 ℃, if so, increases the rated flow of the fuel pump by 1%, the air pump works at 30% of the rated power, otherwise, continuously determines whether the temperature difference is less than 1 ℃, if so, decreases the rated flow of the fuel pump by 0%, the air pump works at 30, if so, reducing 1 percent of the rated flow of the fuel pump, operating the air pump at 30 percent of the rated power, if not, continuously judging whether the temperature difference is less than 10 ℃, if so, increasing 3 percent of the rated flow of the fuel pump, operating the air pump at 30 percent of the rated power, otherwise, reducing 5 percent of the rated flow of the fuel pump, and setting the air pump at 60 percent of the rated power.
The invention discloses a temperature control system of a high-temperature alcohol fuel cell, which solves the problems of insufficient fuel supply of a fuel cell stack and low fuel utilization efficiency caused by excessive fuel supply of the fuel cell stack, thereby achieving the effects of preventing the life of the stack from being rapidly reduced and saving energy.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (2)
1. A high temperature alcohol fuel cell temperature control system, comprising: the fuel combustion chamber (104) is internally provided with a combustion catalyst, and the fuel combustion chamber (104) is connected with a temperature sensor (103) for detecting temperature information in the fuel combustion chamber (104);
a stack (106) for converting chemical energy of the fuel into electrical energy;
a fuel processing chamber (107) for processing fuel entering the stack (106) into fuel usable by the fuel cell stack;
an air pump (101) that supplies air or oxygen to the fuel combustion chamber (104);
a fuel pump (105) for supplying fuel to the fuel processing chamber (107);
a fuel tank (108) that supplies fuel to the fuel pump (105);
the system also comprises a control circuit (102) for receiving the temperature information transmitted by the temperature sensor (103), wherein the control circuit (102) controls the running speeds of the fuel pump (105) and the air pump (101) in real time according to the received temperature information.
2. A high temperature alcohol fuel cell temperature control system as in claim 1, further characterized by: the control circuit (102) controls the running speed of the fuel pump (105) in real time in the following way: calculating the difference between the temperature of the fuel combustion chamber (104) and the target temperature, and if the difference is smaller than a set threshold, increasing the set value of the rated flow of the fuel pump (105) and operating the air pump (101) at the set value of the rated power; and if the difference is larger than or equal to the set threshold, continuously judging whether the temperature difference is smaller than a second threshold, if so, increasing a second set value of the rated flow of the fuel pump (105), operating the air pump (101) at a set value of the rated power, otherwise, continuously judging whether the temperature difference is smaller than a third threshold, if so, increasing the set value of the rated flow of the fuel pump (105), operating the air pump (101) at the set value of the rated power, and repeatedly and circularly regulating the fuel pump (105) and the air pump (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811394205.7A CN111211339B (en) | 2018-11-21 | 2018-11-21 | Temperature control system of high-temperature alcohol fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811394205.7A CN111211339B (en) | 2018-11-21 | 2018-11-21 | Temperature control system of high-temperature alcohol fuel cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111211339A true CN111211339A (en) | 2020-05-29 |
| CN111211339B CN111211339B (en) | 2021-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811394205.7A Active CN111211339B (en) | 2018-11-21 | 2018-11-21 | Temperature control system of high-temperature alcohol fuel cell |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1572037A (en) * | 2001-10-02 | 2005-01-26 | 日产自动车株式会社 | Fuel cell system and method |
| CN101410674A (en) * | 2003-04-04 | 2009-04-15 | 德士古发展公司 | Temperature control in combustion process |
| CN102110827A (en) * | 2009-12-28 | 2011-06-29 | 中国科学院大连化学物理研究所 | Thermal management method for high temperature proton exchange membrane fuel cell system |
| CN104716370A (en) * | 2013-12-15 | 2015-06-17 | 中国科学院大连化学物理研究所 | High temperature liquid fuel cell system |
-
2018
- 2018-11-21 CN CN201811394205.7A patent/CN111211339B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1572037A (en) * | 2001-10-02 | 2005-01-26 | 日产自动车株式会社 | Fuel cell system and method |
| CN101410674A (en) * | 2003-04-04 | 2009-04-15 | 德士古发展公司 | Temperature control in combustion process |
| CN102110827A (en) * | 2009-12-28 | 2011-06-29 | 中国科学院大连化学物理研究所 | Thermal management method for high temperature proton exchange membrane fuel cell system |
| CN104716370A (en) * | 2013-12-15 | 2015-06-17 | 中国科学院大连化学物理研究所 | High temperature liquid fuel cell system |
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| Publication number | Publication date |
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| CN111211339B (en) | 2021-04-23 |
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